diff options
Diffstat (limited to 'fs')
604 files changed, 16647 insertions, 9802 deletions
diff --git a/fs/9p/vfs_inode.c b/fs/9p/vfs_inode.c index 950cf61f118b..0d28ecf668d0 100644 --- a/fs/9p/vfs_inode.c +++ b/fs/9p/vfs_inode.c @@ -260,7 +260,7 @@ int v9fs_init_inode(struct v9fs_session_info *v9ses, inode_init_owner(&nop_mnt_idmap, inode, NULL, mode); inode->i_blocks = 0; inode->i_rdev = rdev; - inode->i_atime = inode->i_mtime = inode->i_ctime = current_time(inode); + inode->i_atime = inode->i_mtime = inode_set_ctime_current(inode); inode->i_mapping->a_ops = &v9fs_addr_operations; inode->i_private = NULL; @@ -1011,7 +1011,7 @@ v9fs_vfs_getattr(struct mnt_idmap *idmap, const struct path *path, p9_debug(P9_DEBUG_VFS, "dentry: %p\n", dentry); v9ses = v9fs_dentry2v9ses(dentry); if (v9ses->cache & (CACHE_META|CACHE_LOOSE)) { - generic_fillattr(&nop_mnt_idmap, inode, stat); + generic_fillattr(&nop_mnt_idmap, request_mask, inode, stat); return 0; } else if (v9ses->cache & CACHE_WRITEBACK) { if (S_ISREG(inode->i_mode)) { @@ -1032,7 +1032,7 @@ v9fs_vfs_getattr(struct mnt_idmap *idmap, const struct path *path, return PTR_ERR(st); v9fs_stat2inode(st, d_inode(dentry), dentry->d_sb, 0); - generic_fillattr(&nop_mnt_idmap, d_inode(dentry), stat); + generic_fillattr(&nop_mnt_idmap, request_mask, d_inode(dentry), stat); p9stat_free(st); kfree(st); @@ -1152,7 +1152,7 @@ v9fs_stat2inode(struct p9_wstat *stat, struct inode *inode, inode->i_atime.tv_sec = stat->atime; inode->i_mtime.tv_sec = stat->mtime; - inode->i_ctime.tv_sec = stat->mtime; + inode_set_ctime(inode, stat->mtime, 0); inode->i_uid = v9ses->dfltuid; inode->i_gid = v9ses->dfltgid; diff --git a/fs/9p/vfs_inode_dotl.c b/fs/9p/vfs_inode_dotl.c index 14510872ecc3..1312f68965ac 100644 --- a/fs/9p/vfs_inode_dotl.c +++ b/fs/9p/vfs_inode_dotl.c @@ -450,7 +450,7 @@ v9fs_vfs_getattr_dotl(struct mnt_idmap *idmap, p9_debug(P9_DEBUG_VFS, "dentry: %p\n", dentry); v9ses = v9fs_dentry2v9ses(dentry); if (v9ses->cache & (CACHE_META|CACHE_LOOSE)) { - generic_fillattr(&nop_mnt_idmap, inode, stat); + generic_fillattr(&nop_mnt_idmap, request_mask, inode, stat); return 0; } else if (v9ses->cache) { if (S_ISREG(inode->i_mode)) { @@ -475,7 +475,7 @@ v9fs_vfs_getattr_dotl(struct mnt_idmap *idmap, return PTR_ERR(st); v9fs_stat2inode_dotl(st, d_inode(dentry), 0); - generic_fillattr(&nop_mnt_idmap, d_inode(dentry), stat); + generic_fillattr(&nop_mnt_idmap, request_mask, d_inode(dentry), stat); /* Change block size to what the server returned */ stat->blksize = st->st_blksize; @@ -645,8 +645,8 @@ v9fs_stat2inode_dotl(struct p9_stat_dotl *stat, struct inode *inode, inode->i_atime.tv_nsec = stat->st_atime_nsec; inode->i_mtime.tv_sec = stat->st_mtime_sec; inode->i_mtime.tv_nsec = stat->st_mtime_nsec; - inode->i_ctime.tv_sec = stat->st_ctime_sec; - inode->i_ctime.tv_nsec = stat->st_ctime_nsec; + inode_set_ctime(inode, stat->st_ctime_sec, + stat->st_ctime_nsec); inode->i_uid = stat->st_uid; inode->i_gid = stat->st_gid; set_nlink(inode, stat->st_nlink); @@ -668,8 +668,8 @@ v9fs_stat2inode_dotl(struct p9_stat_dotl *stat, struct inode *inode, inode->i_mtime.tv_nsec = stat->st_mtime_nsec; } if (stat->st_result_mask & P9_STATS_CTIME) { - inode->i_ctime.tv_sec = stat->st_ctime_sec; - inode->i_ctime.tv_nsec = stat->st_ctime_nsec; + inode_set_ctime(inode, stat->st_ctime_sec, + stat->st_ctime_nsec); } if (stat->st_result_mask & P9_STATS_UID) inode->i_uid = stat->st_uid; diff --git a/fs/Kconfig b/fs/Kconfig index f3be721bab6d..aa7e03cc1941 100644 --- a/fs/Kconfig +++ b/fs/Kconfig @@ -18,8 +18,12 @@ config VALIDATE_FS_PARSER config FS_IOMAP bool +config BUFFER_HEAD + bool + # old blockdev_direct_IO implementation. Use iomap for new code instead config LEGACY_DIRECT_IO + depends on BUFFER_HEAD bool if BLOCK @@ -206,8 +210,8 @@ config TMPFS_XATTR Extended attributes are name:value pairs associated with inodes by the kernel or by users (see the attr(5) manual page for details). - Currently this enables support for the trusted.* and - security.* namespaces. + This enables support for the trusted.*, security.* and user.* + namespaces. You need this for POSIX ACL support on tmpfs. @@ -234,6 +238,18 @@ config TMPFS_INODE64 If unsure, say N. +config TMPFS_QUOTA + bool "Tmpfs quota support" + depends on TMPFS + select QUOTA + help + Quota support allows to set per user and group limits for tmpfs + usage. Say Y to enable quota support. Once enabled you can control + user and group quota enforcement with quota, usrquota and grpquota + mount options. + + If unsure, say N. + config ARCH_SUPPORTS_HUGETLBFS def_bool n diff --git a/fs/Kconfig.binfmt b/fs/Kconfig.binfmt index 93539aac0e5b..f5693164ca9a 100644 --- a/fs/Kconfig.binfmt +++ b/fs/Kconfig.binfmt @@ -58,7 +58,7 @@ config ARCH_USE_GNU_PROPERTY config BINFMT_ELF_FDPIC bool "Kernel support for FDPIC ELF binaries" default y if !BINFMT_ELF - depends on ARM || ((M68K || SUPERH || XTENSA) && !MMU) + depends on ARM || ((M68K || RISCV || SUPERH || XTENSA) && !MMU) select ELFCORE help ELF FDPIC binaries are based on ELF, but allow the individual load diff --git a/fs/Makefile b/fs/Makefile index e513aaee0603..f9541f40be4e 100644 --- a/fs/Makefile +++ b/fs/Makefile @@ -17,7 +17,7 @@ obj-y := open.o read_write.o file_table.o super.o \ fs_types.o fs_context.o fs_parser.o fsopen.o init.o \ kernel_read_file.o mnt_idmapping.o remap_range.o -obj-$(CONFIG_BLOCK) += buffer.o mpage.o +obj-$(CONFIG_BUFFER_HEAD) += buffer.o mpage.o obj-$(CONFIG_PROC_FS) += proc_namespace.o obj-$(CONFIG_LEGACY_DIRECT_IO) += direct-io.o obj-y += notify/ diff --git a/fs/adfs/Kconfig b/fs/adfs/Kconfig index 44738fed6625..1b97058f0c4a 100644 --- a/fs/adfs/Kconfig +++ b/fs/adfs/Kconfig @@ -2,6 +2,7 @@ config ADFS_FS tristate "ADFS file system support" depends on BLOCK + select BUFFER_HEAD help The Acorn Disc Filing System is the standard file system of the RiscOS operating system which runs on Acorn's ARM-based Risc PC diff --git a/fs/adfs/dir_f.h b/fs/adfs/dir_f.h index a5393e6cf9f4..4e6c53d59ebd 100644 --- a/fs/adfs/dir_f.h +++ b/fs/adfs/dir_f.h @@ -58,9 +58,4 @@ struct adfs_newdirtail { __u8 dircheckbyte; } __attribute__((packed)); -union adfs_dirtail { - struct adfs_olddirtail old; - struct adfs_newdirtail new; -}; - #endif diff --git a/fs/adfs/inode.c b/fs/adfs/inode.c index c3ac613d0975..20963002578a 100644 --- a/fs/adfs/inode.c +++ b/fs/adfs/inode.c @@ -270,7 +270,7 @@ adfs_iget(struct super_block *sb, struct object_info *obj) inode->i_mode = adfs_atts2mode(sb, inode); adfs_adfs2unix_time(&inode->i_mtime, inode); inode->i_atime = inode->i_mtime; - inode->i_ctime = inode->i_mtime; + inode_set_ctime_to_ts(inode, inode->i_mtime); if (S_ISDIR(inode->i_mode)) { inode->i_op = &adfs_dir_inode_operations; @@ -331,7 +331,7 @@ adfs_notify_change(struct mnt_idmap *idmap, struct dentry *dentry, if (ia_valid & ATTR_ATIME) inode->i_atime = attr->ia_atime; if (ia_valid & ATTR_CTIME) - inode->i_ctime = attr->ia_ctime; + inode_set_ctime_to_ts(inode, attr->ia_ctime); if (ia_valid & ATTR_MODE) { ADFS_I(inode)->attr = adfs_mode2atts(sb, inode, attr->ia_mode); inode->i_mode = adfs_atts2mode(sb, inode); diff --git a/fs/affs/Kconfig b/fs/affs/Kconfig index 962b86374e1c..1ae432d266c3 100644 --- a/fs/affs/Kconfig +++ b/fs/affs/Kconfig @@ -2,6 +2,7 @@ config AFFS_FS tristate "Amiga FFS file system support" depends on BLOCK + select BUFFER_HEAD select LEGACY_DIRECT_IO help The Fast File System (FFS) is the common file system used on hard diff --git a/fs/affs/amigaffs.c b/fs/affs/amigaffs.c index 29f11e10a7c7..7ba93efc1143 100644 --- a/fs/affs/amigaffs.c +++ b/fs/affs/amigaffs.c @@ -60,7 +60,7 @@ affs_insert_hash(struct inode *dir, struct buffer_head *bh) mark_buffer_dirty_inode(dir_bh, dir); affs_brelse(dir_bh); - dir->i_mtime = dir->i_ctime = current_time(dir); + dir->i_mtime = inode_set_ctime_current(dir); inode_inc_iversion(dir); mark_inode_dirty(dir); @@ -114,7 +114,7 @@ affs_remove_hash(struct inode *dir, struct buffer_head *rem_bh) affs_brelse(bh); - dir->i_mtime = dir->i_ctime = current_time(dir); + dir->i_mtime = inode_set_ctime_current(dir); inode_inc_iversion(dir); mark_inode_dirty(dir); @@ -315,7 +315,7 @@ affs_remove_header(struct dentry *dentry) else clear_nlink(inode); affs_unlock_link(inode); - inode->i_ctime = current_time(inode); + inode_set_ctime_current(inode); mark_inode_dirty(inode); done: diff --git a/fs/affs/file.c b/fs/affs/file.c index 705e227ff63d..04c018e19602 100644 --- a/fs/affs/file.c +++ b/fs/affs/file.c @@ -15,6 +15,7 @@ #include <linux/uio.h> #include <linux/blkdev.h> +#include <linux/mpage.h> #include "affs.h" static struct buffer_head *affs_get_extblock_slow(struct inode *inode, u32 ext); @@ -370,9 +371,10 @@ err_alloc: return -ENOSPC; } -static int affs_writepage(struct page *page, struct writeback_control *wbc) +static int affs_writepages(struct address_space *mapping, + struct writeback_control *wbc) { - return block_write_full_page(page, affs_get_block, wbc); + return mpage_writepages(mapping, wbc, affs_get_block); } static int affs_read_folio(struct file *file, struct folio *folio) @@ -456,10 +458,11 @@ const struct address_space_operations affs_aops = { .dirty_folio = block_dirty_folio, .invalidate_folio = block_invalidate_folio, .read_folio = affs_read_folio, - .writepage = affs_writepage, + .writepages = affs_writepages, .write_begin = affs_write_begin, .write_end = affs_write_end, .direct_IO = affs_direct_IO, + .migrate_folio = buffer_migrate_folio, .bmap = _affs_bmap }; @@ -834,9 +837,10 @@ const struct address_space_operations affs_aops_ofs = { .dirty_folio = block_dirty_folio, .invalidate_folio = block_invalidate_folio, .read_folio = affs_read_folio_ofs, - //.writepage = affs_writepage_ofs, + //.writepages = affs_writepages_ofs, .write_begin = affs_write_begin_ofs, - .write_end = affs_write_end_ofs + .write_end = affs_write_end_ofs, + .migrate_folio = filemap_migrate_folio, }; /* Free any preallocated blocks. */ diff --git a/fs/affs/inode.c b/fs/affs/inode.c index 27f77a52c5c8..060746c63151 100644 --- a/fs/affs/inode.c +++ b/fs/affs/inode.c @@ -149,13 +149,13 @@ struct inode *affs_iget(struct super_block *sb, unsigned long ino) break; } - inode->i_mtime.tv_sec = inode->i_atime.tv_sec = inode->i_ctime.tv_sec - = (be32_to_cpu(tail->change.days) * 86400LL + - be32_to_cpu(tail->change.mins) * 60 + - be32_to_cpu(tail->change.ticks) / 50 + - AFFS_EPOCH_DELTA) + - sys_tz.tz_minuteswest * 60; - inode->i_mtime.tv_nsec = inode->i_ctime.tv_nsec = inode->i_atime.tv_nsec = 0; + inode->i_mtime.tv_sec = inode->i_atime.tv_sec = + inode_set_ctime(inode, + (be32_to_cpu(tail->change.days) * 86400LL + + be32_to_cpu(tail->change.mins) * 60 + + be32_to_cpu(tail->change.ticks) / 50 + AFFS_EPOCH_DELTA) + + sys_tz.tz_minuteswest * 60, 0).tv_sec; + inode->i_mtime.tv_nsec = inode->i_atime.tv_nsec = 0; affs_brelse(bh); unlock_new_inode(inode); return inode; @@ -314,7 +314,7 @@ affs_new_inode(struct inode *dir) inode->i_gid = current_fsgid(); inode->i_ino = block; set_nlink(inode, 1); - inode->i_mtime = inode->i_atime = inode->i_ctime = current_time(inode); + inode->i_mtime = inode->i_atime = inode_set_ctime_current(inode); atomic_set(&AFFS_I(inode)->i_opencnt, 0); AFFS_I(inode)->i_blkcnt = 0; AFFS_I(inode)->i_lc = NULL; diff --git a/fs/affs/namei.c b/fs/affs/namei.c index d12ccfd2a83d..2fe4a5832fcf 100644 --- a/fs/affs/namei.c +++ b/fs/affs/namei.c @@ -43,7 +43,7 @@ affs_get_toupper(struct super_block *sb) * Note: the dentry argument is the parent dentry. */ static inline int -__affs_hash_dentry(const struct dentry *dentry, struct qstr *qstr, toupper_t toupper, bool notruncate) +__affs_hash_dentry(const struct dentry *dentry, struct qstr *qstr, toupper_t fn, bool notruncate) { const u8 *name = qstr->name; unsigned long hash; @@ -57,7 +57,7 @@ __affs_hash_dentry(const struct dentry *dentry, struct qstr *qstr, toupper_t tou hash = init_name_hash(dentry); len = min(qstr->len, AFFSNAMEMAX); for (; len > 0; name++, len--) - hash = partial_name_hash(toupper(*name), hash); + hash = partial_name_hash(fn(*name), hash); qstr->hash = end_name_hash(hash); return 0; @@ -80,7 +80,7 @@ affs_intl_hash_dentry(const struct dentry *dentry, struct qstr *qstr) } static inline int __affs_compare_dentry(unsigned int len, - const char *str, const struct qstr *name, toupper_t toupper, + const char *str, const struct qstr *name, toupper_t fn, bool notruncate) { const u8 *aname = str; @@ -106,7 +106,7 @@ static inline int __affs_compare_dentry(unsigned int len, return 1; for (; len > 0; len--) - if (toupper(*aname++) != toupper(*bname++)) + if (fn(*aname++) != fn(*bname++)) return 1; return 0; @@ -135,7 +135,7 @@ affs_intl_compare_dentry(const struct dentry *dentry, */ static inline int -affs_match(struct dentry *dentry, const u8 *name2, toupper_t toupper) +affs_match(struct dentry *dentry, const u8 *name2, toupper_t fn) { const u8 *name = dentry->d_name.name; int len = dentry->d_name.len; @@ -148,7 +148,7 @@ affs_match(struct dentry *dentry, const u8 *name2, toupper_t toupper) return 0; for (name2++; len > 0; len--) - if (toupper(*name++) != toupper(*name2++)) + if (fn(*name++) != fn(*name2++)) return 0; return 1; } @@ -156,12 +156,12 @@ affs_match(struct dentry *dentry, const u8 *name2, toupper_t toupper) int affs_hash_name(struct super_block *sb, const u8 *name, unsigned int len) { - toupper_t toupper = affs_get_toupper(sb); + toupper_t fn = affs_get_toupper(sb); u32 hash; hash = len = min(len, AFFSNAMEMAX); for (; len > 0; len--) - hash = (hash * 13 + toupper(*name++)) & 0x7ff; + hash = (hash * 13 + fn(*name++)) & 0x7ff; return hash % AFFS_SB(sb)->s_hashsize; } @@ -171,7 +171,7 @@ affs_find_entry(struct inode *dir, struct dentry *dentry) { struct super_block *sb = dir->i_sb; struct buffer_head *bh; - toupper_t toupper = affs_get_toupper(sb); + toupper_t fn = affs_get_toupper(sb); u32 key; pr_debug("%s(\"%pd\")\n", __func__, dentry); @@ -189,7 +189,7 @@ affs_find_entry(struct inode *dir, struct dentry *dentry) bh = affs_bread(sb, key); if (!bh) return ERR_PTR(-EIO); - if (affs_match(dentry, AFFS_TAIL(sb, bh)->name, toupper)) + if (affs_match(dentry, AFFS_TAIL(sb, bh)->name, fn)) return bh; key = be32_to_cpu(AFFS_TAIL(sb, bh)->hash_chain); } diff --git a/fs/afs/dynroot.c b/fs/afs/dynroot.c index d7d9402ff718..95bcbd7654d1 100644 --- a/fs/afs/dynroot.c +++ b/fs/afs/dynroot.c @@ -88,7 +88,7 @@ struct inode *afs_iget_pseudo_dir(struct super_block *sb, bool root) set_nlink(inode, 2); inode->i_uid = GLOBAL_ROOT_UID; inode->i_gid = GLOBAL_ROOT_GID; - inode->i_ctime = inode->i_atime = inode->i_mtime = current_time(inode); + inode->i_atime = inode->i_mtime = inode_set_ctime_current(inode); inode->i_blocks = 0; inode->i_generation = 0; diff --git a/fs/afs/inode.c b/fs/afs/inode.c index 866bab860a88..1c794a1896aa 100644 --- a/fs/afs/inode.c +++ b/fs/afs/inode.c @@ -90,7 +90,7 @@ static int afs_inode_init_from_status(struct afs_operation *op, vnode->status = *status; t = status->mtime_client; - inode->i_ctime = t; + inode_set_ctime_to_ts(inode, t); inode->i_mtime = t; inode->i_atime = t; inode->i_flags |= S_NOATIME; @@ -206,7 +206,7 @@ static void afs_apply_status(struct afs_operation *op, t = status->mtime_client; inode->i_mtime = t; if (vp->update_ctime) - inode->i_ctime = op->ctime; + inode_set_ctime_to_ts(inode, op->ctime); if (vnode->status.data_version != status->data_version) data_changed = true; @@ -252,7 +252,7 @@ static void afs_apply_status(struct afs_operation *op, vnode->netfs.remote_i_size = status->size; if (change_size) { afs_set_i_size(vnode, status->size); - inode->i_ctime = t; + inode_set_ctime_to_ts(inode, t); inode->i_atime = t; } } @@ -773,7 +773,7 @@ int afs_getattr(struct mnt_idmap *idmap, const struct path *path, do { read_seqbegin_or_lock(&vnode->cb_lock, &seq); - generic_fillattr(&nop_mnt_idmap, inode, stat); + generic_fillattr(&nop_mnt_idmap, request_mask, inode, stat); if (test_bit(AFS_VNODE_SILLY_DELETED, &vnode->flags) && stat->nlink > 0) stat->nlink -= 1; @@ -558,7 +558,7 @@ static int aio_setup_ring(struct kioctx *ctx, unsigned int nr_events) ctx->mmap_base = do_mmap(ctx->aio_ring_file, 0, ctx->mmap_size, PROT_READ | PROT_WRITE, - MAP_SHARED, 0, &unused, NULL); + MAP_SHARED, 0, 0, &unused, NULL); mmap_write_unlock(mm); if (IS_ERR((void *)ctx->mmap_base)) { ctx->mmap_size = 0; @@ -1447,13 +1447,8 @@ static void aio_complete_rw(struct kiocb *kiocb, long res) if (kiocb->ki_flags & IOCB_WRITE) { struct inode *inode = file_inode(kiocb->ki_filp); - /* - * Tell lockdep we inherited freeze protection from submission - * thread. - */ if (S_ISREG(inode->i_mode)) - __sb_writers_acquired(inode->i_sb, SB_FREEZE_WRITE); - file_end_write(kiocb->ki_filp); + kiocb_end_write(kiocb); } iocb->ki_res.res = res; @@ -1581,17 +1576,8 @@ static int aio_write(struct kiocb *req, const struct iocb *iocb, return ret; ret = rw_verify_area(WRITE, file, &req->ki_pos, iov_iter_count(&iter)); if (!ret) { - /* - * Open-code file_start_write here to grab freeze protection, - * which will be released by another thread in - * aio_complete_rw(). Fool lockdep by telling it the lock got - * released so that it doesn't complain about the held lock when - * we return to userspace. - */ - if (S_ISREG(file_inode(file)->i_mode)) { - sb_start_write(file_inode(file)->i_sb); - __sb_writers_release(file_inode(file)->i_sb, SB_FREEZE_WRITE); - } + if (S_ISREG(file_inode(file)->i_mode)) + kiocb_start_write(req); req->ki_flags |= IOCB_WRITE; aio_rw_done(req, call_write_iter(file, req, &iter)); } diff --git a/fs/attr.c b/fs/attr.c index d60dc1edb526..a8ae5f6d9b16 100644 --- a/fs/attr.c +++ b/fs/attr.c @@ -312,7 +312,7 @@ void setattr_copy(struct mnt_idmap *idmap, struct inode *inode, if (ia_valid & ATTR_MTIME) inode->i_mtime = attr->ia_mtime; if (ia_valid & ATTR_CTIME) - inode->i_ctime = attr->ia_ctime; + inode_set_ctime_to_ts(inode, attr->ia_ctime); if (ia_valid & ATTR_MODE) { umode_t mode = attr->ia_mode; if (!in_group_or_capable(idmap, inode, @@ -394,9 +394,25 @@ int notify_change(struct mnt_idmap *idmap, struct dentry *dentry, return error; if ((ia_valid & ATTR_MODE)) { - umode_t amode = attr->ia_mode; + /* + * Don't allow changing the mode of symlinks: + * + * (1) The vfs doesn't take the mode of symlinks into account + * during permission checking. + * (2) This has never worked correctly. Most major filesystems + * did return EOPNOTSUPP due to interactions with POSIX ACLs + * but did still updated the mode of the symlink. + * This inconsistency led system call wrapper providers such + * as libc to block changing the mode of symlinks with + * EOPNOTSUPP already. + * (3) To even do this in the first place one would have to use + * specific file descriptors and quite some effort. + */ + if (S_ISLNK(inode->i_mode)) + return -EOPNOTSUPP; + /* Flag setting protected by i_mutex */ - if (is_sxid(amode)) + if (is_sxid(attr->ia_mode)) inode->i_flags &= ~S_NOSEC; } diff --git a/fs/autofs/inode.c b/fs/autofs/inode.c index affa70360b1f..2b49662ed237 100644 --- a/fs/autofs/inode.c +++ b/fs/autofs/inode.c @@ -370,7 +370,7 @@ struct inode *autofs_get_inode(struct super_block *sb, umode_t mode) inode->i_uid = d_inode(sb->s_root)->i_uid; inode->i_gid = d_inode(sb->s_root)->i_gid; } - inode->i_atime = inode->i_mtime = inode->i_ctime = current_time(inode); + inode->i_atime = inode->i_mtime = inode_set_ctime_current(inode); inode->i_ino = get_next_ino(); if (S_ISDIR(mode)) { diff --git a/fs/autofs/root.c b/fs/autofs/root.c index 93046c9dc461..512b9a26c63d 100644 --- a/fs/autofs/root.c +++ b/fs/autofs/root.c @@ -600,7 +600,7 @@ static int autofs_dir_symlink(struct mnt_idmap *idmap, p_ino = autofs_dentry_ino(dentry->d_parent); p_ino->count++; - dir->i_mtime = dir->i_ctime = current_time(dir); + dir->i_mtime = inode_set_ctime_current(dir); return 0; } @@ -633,7 +633,7 @@ static int autofs_dir_unlink(struct inode *dir, struct dentry *dentry) d_inode(dentry)->i_size = 0; clear_nlink(d_inode(dentry)); - dir->i_mtime = dir->i_ctime = current_time(dir); + dir->i_mtime = inode_set_ctime_current(dir); spin_lock(&sbi->lookup_lock); __autofs_add_expiring(dentry); @@ -749,7 +749,7 @@ static int autofs_dir_mkdir(struct mnt_idmap *idmap, p_ino = autofs_dentry_ino(dentry->d_parent); p_ino->count++; inc_nlink(dir); - dir->i_mtime = dir->i_ctime = current_time(dir); + dir->i_mtime = inode_set_ctime_current(dir); return 0; } diff --git a/fs/autofs/waitq.c b/fs/autofs/waitq.c index 54c1f8b8b075..33dd4660d82f 100644 --- a/fs/autofs/waitq.c +++ b/fs/autofs/waitq.c @@ -32,8 +32,9 @@ void autofs_catatonic_mode(struct autofs_sb_info *sbi) wq->status = -ENOENT; /* Magic is gone - report failure */ kfree(wq->name.name - wq->offset); wq->name.name = NULL; - wq->wait_ctr--; - wake_up_interruptible(&wq->queue); + wake_up(&wq->queue); + if (!--wq->wait_ctr) + kfree(wq); wq = nwq; } fput(sbi->pipe); /* Close the pipe */ diff --git a/fs/bad_inode.c b/fs/bad_inode.c index db649487d58c..83f9566c973b 100644 --- a/fs/bad_inode.c +++ b/fs/bad_inode.c @@ -133,8 +133,7 @@ static int bad_inode_fiemap(struct inode *inode, return -EIO; } -static int bad_inode_update_time(struct inode *inode, struct timespec64 *time, - int flags) +static int bad_inode_update_time(struct inode *inode, int flags) { return -EIO; } @@ -209,8 +208,7 @@ void make_bad_inode(struct inode *inode) remove_inode_hash(inode); inode->i_mode = S_IFREG; - inode->i_atime = inode->i_mtime = inode->i_ctime = - current_time(inode); + inode->i_atime = inode->i_mtime = inode_set_ctime_current(inode); inode->i_op = &bad_inode_ops; inode->i_opflags &= ~IOP_XATTR; inode->i_fop = &bad_file_ops; diff --git a/fs/befs/Kconfig b/fs/befs/Kconfig index 9550b6462b81..5fcfc4024ffe 100644 --- a/fs/befs/Kconfig +++ b/fs/befs/Kconfig @@ -2,6 +2,7 @@ config BEFS_FS tristate "BeOS file system (BeFS) support (read only)" depends on BLOCK + select BUFFER_HEAD select NLS help The BeOS File System (BeFS) is the native file system of Be, Inc's diff --git a/fs/befs/linuxvfs.c b/fs/befs/linuxvfs.c index eee9237386e2..9a16a51fbb88 100644 --- a/fs/befs/linuxvfs.c +++ b/fs/befs/linuxvfs.c @@ -363,7 +363,7 @@ static struct inode *befs_iget(struct super_block *sb, unsigned long ino) inode->i_mtime.tv_sec = fs64_to_cpu(sb, raw_inode->last_modified_time) >> 16; inode->i_mtime.tv_nsec = 0; /* lower 16 bits are not a time */ - inode->i_ctime = inode->i_mtime; + inode_set_ctime_to_ts(inode, inode->i_mtime); inode->i_atime = inode->i_mtime; befs_ino->i_inode_num = fsrun_to_cpu(sb, raw_inode->inode_num); diff --git a/fs/bfs/Kconfig b/fs/bfs/Kconfig index 3a757805b585..8e7ef866b62a 100644 --- a/fs/bfs/Kconfig +++ b/fs/bfs/Kconfig @@ -2,6 +2,7 @@ config BFS_FS tristate "BFS file system support" depends on BLOCK + select BUFFER_HEAD help Boot File System (BFS) is a file system used under SCO UnixWare to allow the bootloader access to the kernel image and other important diff --git a/fs/bfs/dir.c b/fs/bfs/dir.c index 040d5140e426..12b8af04dcb3 100644 --- a/fs/bfs/dir.c +++ b/fs/bfs/dir.c @@ -97,7 +97,7 @@ static int bfs_create(struct mnt_idmap *idmap, struct inode *dir, set_bit(ino, info->si_imap); info->si_freei--; inode_init_owner(&nop_mnt_idmap, inode, dir, mode); - inode->i_mtime = inode->i_atime = inode->i_ctime = current_time(inode); + inode->i_mtime = inode->i_atime = inode_set_ctime_current(inode); inode->i_blocks = 0; inode->i_op = &bfs_file_inops; inode->i_fop = &bfs_file_operations; @@ -158,7 +158,7 @@ static int bfs_link(struct dentry *old, struct inode *dir, return err; } inc_nlink(inode); - inode->i_ctime = current_time(inode); + inode_set_ctime_current(inode); mark_inode_dirty(inode); ihold(inode); d_instantiate(new, inode); @@ -187,9 +187,9 @@ static int bfs_unlink(struct inode *dir, struct dentry *dentry) } de->ino = 0; mark_buffer_dirty_inode(bh, dir); - dir->i_ctime = dir->i_mtime = current_time(dir); + dir->i_mtime = inode_set_ctime_current(dir); mark_inode_dirty(dir); - inode->i_ctime = dir->i_ctime; + inode_set_ctime_to_ts(inode, inode_get_ctime(dir)); inode_dec_link_count(inode); error = 0; @@ -240,10 +240,10 @@ static int bfs_rename(struct mnt_idmap *idmap, struct inode *old_dir, goto end_rename; } old_de->ino = 0; - old_dir->i_ctime = old_dir->i_mtime = current_time(old_dir); + old_dir->i_mtime = inode_set_ctime_current(old_dir); mark_inode_dirty(old_dir); if (new_inode) { - new_inode->i_ctime = current_time(new_inode); + inode_set_ctime_current(new_inode); inode_dec_link_count(new_inode); } mark_buffer_dirty_inode(old_bh, old_dir); @@ -292,9 +292,9 @@ static int bfs_add_entry(struct inode *dir, const struct qstr *child, int ino) pos = (block - sblock) * BFS_BSIZE + off; if (pos >= dir->i_size) { dir->i_size += BFS_DIRENT_SIZE; - dir->i_ctime = current_time(dir); + inode_set_ctime_current(dir); } - dir->i_mtime = current_time(dir); + dir->i_mtime = inode_set_ctime_current(dir); mark_inode_dirty(dir); de->ino = cpu_to_le16((u16)ino); for (i = 0; i < BFS_NAMELEN; i++) diff --git a/fs/bfs/inode.c b/fs/bfs/inode.c index 1926bec2c850..e6a76ae9eb44 100644 --- a/fs/bfs/inode.c +++ b/fs/bfs/inode.c @@ -82,10 +82,9 @@ struct inode *bfs_iget(struct super_block *sb, unsigned long ino) inode->i_blocks = BFS_FILEBLOCKS(di); inode->i_atime.tv_sec = le32_to_cpu(di->i_atime); inode->i_mtime.tv_sec = le32_to_cpu(di->i_mtime); - inode->i_ctime.tv_sec = le32_to_cpu(di->i_ctime); + inode_set_ctime(inode, le32_to_cpu(di->i_ctime), 0); inode->i_atime.tv_nsec = 0; inode->i_mtime.tv_nsec = 0; - inode->i_ctime.tv_nsec = 0; brelse(bh); unlock_new_inode(inode); @@ -143,7 +142,7 @@ static int bfs_write_inode(struct inode *inode, struct writeback_control *wbc) di->i_nlink = cpu_to_le32(inode->i_nlink); di->i_atime = cpu_to_le32(inode->i_atime.tv_sec); di->i_mtime = cpu_to_le32(inode->i_mtime.tv_sec); - di->i_ctime = cpu_to_le32(inode->i_ctime.tv_sec); + di->i_ctime = cpu_to_le32(inode_get_ctime(inode).tv_sec); i_sblock = BFS_I(inode)->i_sblock; di->i_sblock = cpu_to_le32(i_sblock); di->i_eblock = cpu_to_le32(BFS_I(inode)->i_eblock); diff --git a/fs/binfmt_elf_fdpic.c b/fs/binfmt_elf_fdpic.c index 1c6c5832af86..43b2a2851ba3 100644 --- a/fs/binfmt_elf_fdpic.c +++ b/fs/binfmt_elf_fdpic.c @@ -138,7 +138,7 @@ static int is_constdisp(struct elfhdr *hdr) static int elf_fdpic_fetch_phdrs(struct elf_fdpic_params *params, struct file *file) { - struct elf32_phdr *phdr; + struct elf_phdr *phdr; unsigned long size; int retval, loop; loff_t pos = params->hdr.e_phoff; @@ -560,8 +560,8 @@ static int create_elf_fdpic_tables(struct linux_binprm *bprm, sp &= ~7UL; /* stack the load map(s) */ - len = sizeof(struct elf32_fdpic_loadmap); - len += sizeof(struct elf32_fdpic_loadseg) * exec_params->loadmap->nsegs; + len = sizeof(struct elf_fdpic_loadmap); + len += sizeof(struct elf_fdpic_loadseg) * exec_params->loadmap->nsegs; sp = (sp - len) & ~7UL; exec_params->map_addr = sp; @@ -571,8 +571,8 @@ static int create_elf_fdpic_tables(struct linux_binprm *bprm, current->mm->context.exec_fdpic_loadmap = (unsigned long) sp; if (interp_params->loadmap) { - len = sizeof(struct elf32_fdpic_loadmap); - len += sizeof(struct elf32_fdpic_loadseg) * + len = sizeof(struct elf_fdpic_loadmap); + len += sizeof(struct elf_fdpic_loadseg) * interp_params->loadmap->nsegs; sp = (sp - len) & ~7UL; interp_params->map_addr = sp; @@ -740,13 +740,13 @@ static int elf_fdpic_map_file(struct elf_fdpic_params *params, struct mm_struct *mm, const char *what) { - struct elf32_fdpic_loadmap *loadmap; + struct elf_fdpic_loadmap *loadmap; #ifdef CONFIG_MMU - struct elf32_fdpic_loadseg *mseg; + struct elf_fdpic_loadseg *mseg; unsigned long load_addr; #endif - struct elf32_fdpic_loadseg *seg; - struct elf32_phdr *phdr; + struct elf_fdpic_loadseg *seg; + struct elf_phdr *phdr; unsigned nloads, tmp; unsigned long stop; int loop, ret; @@ -766,7 +766,7 @@ static int elf_fdpic_map_file(struct elf_fdpic_params *params, params->loadmap = loadmap; - loadmap->version = ELF32_FDPIC_LOADMAP_VERSION; + loadmap->version = ELF_FDPIC_LOADMAP_VERSION; loadmap->nsegs = nloads; /* map the requested LOADs into the memory space */ @@ -839,8 +839,8 @@ static int elf_fdpic_map_file(struct elf_fdpic_params *params, if (phdr->p_vaddr >= seg->p_vaddr && phdr->p_vaddr + phdr->p_memsz <= seg->p_vaddr + seg->p_memsz) { - Elf32_Dyn __user *dyn; - Elf32_Sword d_tag; + Elf_Dyn __user *dyn; + Elf_Sword d_tag; params->dynamic_addr = (phdr->p_vaddr - seg->p_vaddr) + @@ -850,11 +850,11 @@ static int elf_fdpic_map_file(struct elf_fdpic_params *params, * one item, and that the last item is a NULL * entry */ if (phdr->p_memsz == 0 || - phdr->p_memsz % sizeof(Elf32_Dyn) != 0) + phdr->p_memsz % sizeof(Elf_Dyn) != 0) goto dynamic_error; - tmp = phdr->p_memsz / sizeof(Elf32_Dyn); - dyn = (Elf32_Dyn __user *)params->dynamic_addr; + tmp = phdr->p_memsz / sizeof(Elf_Dyn); + dyn = (Elf_Dyn __user *)params->dynamic_addr; if (get_user(d_tag, &dyn[tmp - 1].d_tag) || d_tag != 0) goto dynamic_error; @@ -923,8 +923,8 @@ static int elf_fdpic_map_file_constdisp_on_uclinux( struct file *file, struct mm_struct *mm) { - struct elf32_fdpic_loadseg *seg; - struct elf32_phdr *phdr; + struct elf_fdpic_loadseg *seg; + struct elf_phdr *phdr; unsigned long load_addr, base = ULONG_MAX, top = 0, maddr = 0; int loop, ret; @@ -1007,8 +1007,8 @@ static int elf_fdpic_map_file_by_direct_mmap(struct elf_fdpic_params *params, struct file *file, struct mm_struct *mm) { - struct elf32_fdpic_loadseg *seg; - struct elf32_phdr *phdr; + struct elf_fdpic_loadseg *seg; + struct elf_phdr *phdr; unsigned long load_addr, delta_vaddr; int loop, dvset; diff --git a/fs/binfmt_misc.c b/fs/binfmt_misc.c index bb202ad369d5..e0108d17b085 100644 --- a/fs/binfmt_misc.c +++ b/fs/binfmt_misc.c @@ -547,8 +547,7 @@ static struct inode *bm_get_inode(struct super_block *sb, int mode) if (inode) { inode->i_ino = get_next_ino(); inode->i_mode = mode; - inode->i_atime = inode->i_mtime = inode->i_ctime = - current_time(inode); + inode->i_atime = inode->i_mtime = inode_set_ctime_current(inode); } return inode; } diff --git a/fs/btrfs/Kconfig b/fs/btrfs/Kconfig index 66fa9ab2c046..3282adc84d52 100644 --- a/fs/btrfs/Kconfig +++ b/fs/btrfs/Kconfig @@ -49,9 +49,11 @@ config BTRFS_FS_POSIX_ACL If you don't know what Access Control Lists are, say N config BTRFS_FS_CHECK_INTEGRITY - bool "Btrfs with integrity check tool compiled in (DANGEROUS)" + bool "Btrfs with integrity check tool compiled in (DEPRECATED)" depends on BTRFS_FS help + This feature has been deprecated and will be removed in 6.7. + Adds code that examines all block write requests (including writes of the super block). The goal is to verify that the state of the filesystem on disk is always consistent, i.e., diff --git a/fs/btrfs/accessors.h b/fs/btrfs/accessors.h index ceadfc5d6c66..8cfc8214109c 100644 --- a/fs/btrfs/accessors.h +++ b/fs/btrfs/accessors.h @@ -3,6 +3,8 @@ #ifndef BTRFS_ACCESSORS_H #define BTRFS_ACCESSORS_H +#include <linux/stddef.h> + struct btrfs_map_token { struct extent_buffer *eb; char *kaddr; @@ -34,13 +36,13 @@ static inline void put_unaligned_le8(u8 val, void *p) read_extent_buffer(eb, (char *)(result), \ ((unsigned long)(ptr)) + \ offsetof(type, member), \ - sizeof(((type *)0)->member))) + sizeof_field(type, member))) #define write_eb_member(eb, ptr, type, member, result) (\ write_extent_buffer(eb, (char *)(result), \ ((unsigned long)(ptr)) + \ offsetof(type, member), \ - sizeof(((type *)0)->member))) + sizeof_field(type, member))) #define DECLARE_BTRFS_SETGET_BITS(bits) \ u##bits btrfs_get_token_##bits(struct btrfs_map_token *token, \ @@ -62,25 +64,25 @@ DECLARE_BTRFS_SETGET_BITS(64) static inline u##bits btrfs_##name(const struct extent_buffer *eb, \ const type *s) \ { \ - static_assert(sizeof(u##bits) == sizeof(((type *)0))->member); \ + static_assert(sizeof(u##bits) == sizeof_field(type, member)); \ return btrfs_get_##bits(eb, s, offsetof(type, member)); \ } \ static inline void btrfs_set_##name(const struct extent_buffer *eb, type *s, \ u##bits val) \ { \ - static_assert(sizeof(u##bits) == sizeof(((type *)0))->member); \ + static_assert(sizeof(u##bits) == sizeof_field(type, member)); \ btrfs_set_##bits(eb, s, offsetof(type, member), val); \ } \ static inline u##bits btrfs_token_##name(struct btrfs_map_token *token, \ const type *s) \ { \ - static_assert(sizeof(u##bits) == sizeof(((type *)0))->member); \ + static_assert(sizeof(u##bits) == sizeof_field(type, member)); \ return btrfs_get_token_##bits(token, s, offsetof(type, member));\ } \ static inline void btrfs_set_token_##name(struct btrfs_map_token *token,\ type *s, u##bits val) \ { \ - static_assert(sizeof(u##bits) == sizeof(((type *)0))->member); \ + static_assert(sizeof(u##bits) == sizeof_field(type, member)); \ btrfs_set_token_##bits(token, s, offsetof(type, member), val); \ } @@ -111,17 +113,14 @@ static inline void btrfs_set_##name(type *s, u##bits val) \ static inline u64 btrfs_device_total_bytes(const struct extent_buffer *eb, struct btrfs_dev_item *s) { - static_assert(sizeof(u64) == - sizeof(((struct btrfs_dev_item *)0))->total_bytes); - return btrfs_get_64(eb, s, offsetof(struct btrfs_dev_item, - total_bytes)); + static_assert(sizeof(u64) == sizeof_field(struct btrfs_dev_item, total_bytes)); + return btrfs_get_64(eb, s, offsetof(struct btrfs_dev_item, total_bytes)); } static inline void btrfs_set_device_total_bytes(const struct extent_buffer *eb, struct btrfs_dev_item *s, u64 val) { - static_assert(sizeof(u64) == - sizeof(((struct btrfs_dev_item *)0))->total_bytes); + static_assert(sizeof(u64) == sizeof_field(struct btrfs_dev_item, total_bytes)); WARN_ON(!IS_ALIGNED(val, eb->fs_info->sectorsize)); btrfs_set_64(eb, s, offsetof(struct btrfs_dev_item, total_bytes), val); } diff --git a/fs/btrfs/backref.c b/fs/btrfs/backref.c index 79336fa853db..b7d54efb4728 100644 --- a/fs/btrfs/backref.c +++ b/fs/btrfs/backref.c @@ -3373,7 +3373,6 @@ int btrfs_backref_add_tree_node(struct btrfs_backref_cache *cache, struct btrfs_key *node_key, struct btrfs_backref_node *cur) { - struct btrfs_fs_info *fs_info = cache->fs_info; struct btrfs_backref_edge *edge; struct btrfs_backref_node *exist; int ret; @@ -3462,25 +3461,21 @@ int btrfs_backref_add_tree_node(struct btrfs_backref_cache *cache, ret = handle_direct_tree_backref(cache, &key, cur); if (ret < 0) goto out; - continue; - } else if (unlikely(key.type == BTRFS_EXTENT_REF_V0_KEY)) { - ret = -EINVAL; - btrfs_print_v0_err(fs_info); - btrfs_handle_fs_error(fs_info, ret, NULL); - goto out; - } else if (key.type != BTRFS_TREE_BLOCK_REF_KEY) { - continue; + } else if (key.type == BTRFS_TREE_BLOCK_REF_KEY) { + /* + * key.type == BTRFS_TREE_BLOCK_REF_KEY, inline ref + * offset means the root objectid. We need to search + * the tree to get its parent bytenr. + */ + ret = handle_indirect_tree_backref(cache, path, &key, node_key, + cur); + if (ret < 0) + goto out; } - /* - * key.type == BTRFS_TREE_BLOCK_REF_KEY, inline ref offset - * means the root objectid. We need to search the tree to get - * its parent bytenr. + * Unrecognized tree backref items (if it can pass tree-checker) + * would be ignored. */ - ret = handle_indirect_tree_backref(cache, path, &key, node_key, - cur); - if (ret < 0) - goto out; } ret = 0; cur->checked = 1; diff --git a/fs/btrfs/block-group.c b/fs/btrfs/block-group.c index 030ab44fce18..0cb1dee965a0 100644 --- a/fs/btrfs/block-group.c +++ b/fs/btrfs/block-group.c @@ -441,13 +441,23 @@ void btrfs_wait_block_group_cache_progress(struct btrfs_block_group *cache, u64 num_bytes) { struct btrfs_caching_control *caching_ctl; + int progress; caching_ctl = btrfs_get_caching_control(cache); if (!caching_ctl) return; + /* + * We've already failed to allocate from this block group, so even if + * there's enough space in the block group it isn't contiguous enough to + * allow for an allocation, so wait for at least the next wakeup tick, + * or for the thing to be done. + */ + progress = atomic_read(&caching_ctl->progress); + wait_event(caching_ctl->wait, btrfs_block_group_done(cache) || - (cache->free_space_ctl->free_space >= num_bytes)); + (progress != atomic_read(&caching_ctl->progress) && + (cache->free_space_ctl->free_space >= num_bytes))); btrfs_put_caching_control(caching_ctl); } @@ -494,13 +504,20 @@ static void fragment_free_space(struct btrfs_block_group *block_group) #endif /* - * This is only called by btrfs_cache_block_group, since we could have freed - * extents we need to check the pinned_extents for any extents that can't be - * used yet since their free space will be released as soon as the transaction - * commits. + * Add a free space range to the in memory free space cache of a block group. + * This checks if the range contains super block locations and any such + * locations are not added to the free space cache. + * + * @block_group: The target block group. + * @start: Start offset of the range. + * @end: End offset of the range (exclusive). + * @total_added_ret: Optional pointer to return the total amount of space + * added to the block group's free space cache. + * + * Returns 0 on success or < 0 on error. */ -int add_new_free_space(struct btrfs_block_group *block_group, u64 start, u64 end, - u64 *total_added_ret) +int btrfs_add_new_free_space(struct btrfs_block_group *block_group, u64 start, + u64 end, u64 *total_added_ret) { struct btrfs_fs_info *info = block_group->fs_info; u64 extent_start, extent_end, size; @@ -510,11 +527,10 @@ int add_new_free_space(struct btrfs_block_group *block_group, u64 start, u64 end *total_added_ret = 0; while (start < end) { - ret = find_first_extent_bit(&info->excluded_extents, start, - &extent_start, &extent_end, - EXTENT_DIRTY | EXTENT_UPTODATE, - NULL); - if (ret) + if (!find_first_extent_bit(&info->excluded_extents, start, + &extent_start, &extent_end, + EXTENT_DIRTY | EXTENT_UPTODATE, + NULL)) break; if (extent_start <= start) { @@ -789,8 +805,8 @@ next: key.type == BTRFS_METADATA_ITEM_KEY) { u64 space_added; - ret = add_new_free_space(block_group, last, key.objectid, - &space_added); + ret = btrfs_add_new_free_space(block_group, last, + key.objectid, &space_added); if (ret) goto out; total_found += space_added; @@ -802,21 +818,29 @@ next: if (total_found > CACHING_CTL_WAKE_UP) { total_found = 0; - if (wakeup) + if (wakeup) { + atomic_inc(&caching_ctl->progress); wake_up(&caching_ctl->wait); + } } } path->slots[0]++; } - ret = add_new_free_space(block_group, last, - block_group->start + block_group->length, - NULL); + ret = btrfs_add_new_free_space(block_group, last, + block_group->start + block_group->length, + NULL); out: btrfs_free_path(path); return ret; } +static inline void btrfs_free_excluded_extents(const struct btrfs_block_group *bg) +{ + clear_extent_bits(&bg->fs_info->excluded_extents, bg->start, + bg->start + bg->length - 1, EXTENT_UPTODATE); +} + static noinline void caching_thread(struct btrfs_work *work) { struct btrfs_block_group *block_group; @@ -910,6 +934,7 @@ int btrfs_cache_block_group(struct btrfs_block_group *cache, bool wait) init_waitqueue_head(&caching_ctl->wait); caching_ctl->block_group = cache; refcount_set(&caching_ctl->count, 2); + atomic_set(&caching_ctl->progress, 0); btrfs_init_work(&caching_ctl->work, caching_thread, NULL, NULL); spin_lock(&cache->lock); @@ -2085,8 +2110,9 @@ static int exclude_super_stripes(struct btrfs_block_group *cache) if (cache->start < BTRFS_SUPER_INFO_OFFSET) { stripe_len = BTRFS_SUPER_INFO_OFFSET - cache->start; cache->bytes_super += stripe_len; - ret = btrfs_add_excluded_extent(fs_info, cache->start, - stripe_len); + ret = set_extent_bit(&fs_info->excluded_extents, cache->start, + cache->start + stripe_len - 1, + EXTENT_UPTODATE, NULL); if (ret) return ret; } @@ -2112,8 +2138,9 @@ static int exclude_super_stripes(struct btrfs_block_group *cache) cache->start + cache->length - logical[nr]); cache->bytes_super += len; - ret = btrfs_add_excluded_extent(fs_info, logical[nr], - len); + ret = set_extent_bit(&fs_info->excluded_extents, logical[nr], + logical[nr] + len - 1, + EXTENT_UPTODATE, NULL); if (ret) { kfree(logical); return ret; @@ -2306,8 +2333,8 @@ static int read_one_block_group(struct btrfs_fs_info *info, btrfs_free_excluded_extents(cache); } else if (cache->used == 0) { cache->cached = BTRFS_CACHE_FINISHED; - ret = add_new_free_space(cache, cache->start, - cache->start + cache->length, NULL); + ret = btrfs_add_new_free_space(cache, cache->start, + cache->start + cache->length, NULL); btrfs_free_excluded_extents(cache); if (ret) goto error; @@ -2754,7 +2781,7 @@ struct btrfs_block_group *btrfs_make_block_group(struct btrfs_trans_handle *tran return ERR_PTR(ret); } - ret = add_new_free_space(cache, chunk_offset, chunk_offset + size, NULL); + ret = btrfs_add_new_free_space(cache, chunk_offset, chunk_offset + size, NULL); btrfs_free_excluded_extents(cache); if (ret) { btrfs_put_block_group(cache); @@ -4062,7 +4089,7 @@ int btrfs_chunk_alloc(struct btrfs_trans_handle *trans, u64 flags, if (IS_ERR(ret_bg)) { ret = PTR_ERR(ret_bg); - } else if (from_extent_allocation) { + } else if (from_extent_allocation && (flags & BTRFS_BLOCK_GROUP_DATA)) { /* * New block group is likely to be used soon. Try to activate * it now. Failure is OK for now. @@ -4260,6 +4287,17 @@ int btrfs_free_block_groups(struct btrfs_fs_info *info) struct btrfs_caching_control *caching_ctl; struct rb_node *n; + if (btrfs_is_zoned(info)) { + if (info->active_meta_bg) { + btrfs_put_block_group(info->active_meta_bg); + info->active_meta_bg = NULL; + } + if (info->active_system_bg) { + btrfs_put_block_group(info->active_system_bg); + info->active_system_bg = NULL; + } + } + write_lock(&info->block_group_cache_lock); while (!list_empty(&info->caching_block_groups)) { caching_ctl = list_entry(info->caching_block_groups.next, diff --git a/fs/btrfs/block-group.h b/fs/btrfs/block-group.h index aba5dff66c19..2bdbcb834f95 100644 --- a/fs/btrfs/block-group.h +++ b/fs/btrfs/block-group.h @@ -90,6 +90,8 @@ struct btrfs_caching_control { wait_queue_head_t wait; struct btrfs_work work; struct btrfs_block_group *block_group; + /* Track progress of caching during allocation. */ + atomic_t progress; refcount_t count; }; @@ -289,8 +291,8 @@ int btrfs_cache_block_group(struct btrfs_block_group *cache, bool wait); void btrfs_put_caching_control(struct btrfs_caching_control *ctl); struct btrfs_caching_control *btrfs_get_caching_control( struct btrfs_block_group *cache); -int add_new_free_space(struct btrfs_block_group *block_group, - u64 start, u64 end, u64 *total_added_ret); +int btrfs_add_new_free_space(struct btrfs_block_group *block_group, + u64 start, u64 end, u64 *total_added_ret); struct btrfs_trans_handle *btrfs_start_trans_remove_block_group( struct btrfs_fs_info *fs_info, const u64 chunk_offset); diff --git a/fs/btrfs/btrfs_inode.h b/fs/btrfs/btrfs_inode.h index d47a927b3504..bda1fdbba666 100644 --- a/fs/btrfs/btrfs_inode.h +++ b/fs/btrfs/btrfs_inode.h @@ -498,12 +498,8 @@ int btrfs_prealloc_file_range_trans(struct inode *inode, u64 start, u64 num_bytes, u64 min_size, loff_t actual_len, u64 *alloc_hint); int btrfs_run_delalloc_range(struct btrfs_inode *inode, struct page *locked_page, - u64 start, u64 end, int *page_started, - unsigned long *nr_written, struct writeback_control *wbc); + u64 start, u64 end, struct writeback_control *wbc); int btrfs_writepage_cow_fixup(struct page *page); -void btrfs_writepage_endio_finish_ordered(struct btrfs_inode *inode, - struct page *page, u64 start, - u64 end, bool uptodate); int btrfs_encoded_io_compression_from_extent(struct btrfs_fs_info *fs_info, int compress_type); int btrfs_encoded_read_regular_fill_pages(struct btrfs_inode *inode, diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h index f2d2b313bde5..9419f4e37a58 100644 --- a/fs/btrfs/ctree.h +++ b/fs/btrfs/ctree.h @@ -443,6 +443,7 @@ struct btrfs_drop_extents_args { struct btrfs_file_private { void *filldir_buf; + u64 last_index; struct extent_state *llseek_cached_state; }; diff --git a/fs/btrfs/delayed-inode.c b/fs/btrfs/delayed-inode.c index 6b457b010cbc..53c1211dd60b 100644 --- a/fs/btrfs/delayed-inode.c +++ b/fs/btrfs/delayed-inode.c @@ -1632,6 +1632,7 @@ int btrfs_inode_delayed_dir_index_count(struct btrfs_inode *inode) } bool btrfs_readdir_get_delayed_items(struct inode *inode, + u64 last_index, struct list_head *ins_list, struct list_head *del_list) { @@ -1651,14 +1652,14 @@ bool btrfs_readdir_get_delayed_items(struct inode *inode, mutex_lock(&delayed_node->mutex); item = __btrfs_first_delayed_insertion_item(delayed_node); - while (item) { + while (item && item->index <= last_index) { refcount_inc(&item->refs); list_add_tail(&item->readdir_list, ins_list); item = __btrfs_next_delayed_item(item); } item = __btrfs_first_delayed_deletion_item(delayed_node); - while (item) { + while (item && item->index <= last_index) { refcount_inc(&item->refs); list_add_tail(&item->readdir_list, del_list); item = __btrfs_next_delayed_item(item); @@ -1735,9 +1736,6 @@ int btrfs_readdir_delayed_dir_index(struct dir_context *ctx, int over = 0; unsigned char d_type; - if (list_empty(ins_list)) - return 0; - /* * Changing the data of the delayed item is impossible. So * we needn't lock them. And we have held i_mutex of the @@ -1808,9 +1806,9 @@ static void fill_stack_inode_item(struct btrfs_trans_handle *trans, inode->i_mtime.tv_nsec); btrfs_set_stack_timespec_sec(&inode_item->ctime, - inode->i_ctime.tv_sec); + inode_get_ctime(inode).tv_sec); btrfs_set_stack_timespec_nsec(&inode_item->ctime, - inode->i_ctime.tv_nsec); + inode_get_ctime(inode).tv_nsec); btrfs_set_stack_timespec_sec(&inode_item->otime, BTRFS_I(inode)->i_otime.tv_sec); @@ -1861,8 +1859,8 @@ int btrfs_fill_inode(struct inode *inode, u32 *rdev) inode->i_mtime.tv_sec = btrfs_stack_timespec_sec(&inode_item->mtime); inode->i_mtime.tv_nsec = btrfs_stack_timespec_nsec(&inode_item->mtime); - inode->i_ctime.tv_sec = btrfs_stack_timespec_sec(&inode_item->ctime); - inode->i_ctime.tv_nsec = btrfs_stack_timespec_nsec(&inode_item->ctime); + inode_set_ctime(inode, btrfs_stack_timespec_sec(&inode_item->ctime), + btrfs_stack_timespec_nsec(&inode_item->ctime)); BTRFS_I(inode)->i_otime.tv_sec = btrfs_stack_timespec_sec(&inode_item->otime); diff --git a/fs/btrfs/delayed-inode.h b/fs/btrfs/delayed-inode.h index 4f21daa3dbc7..dc1085b2a397 100644 --- a/fs/btrfs/delayed-inode.h +++ b/fs/btrfs/delayed-inode.h @@ -148,6 +148,7 @@ void btrfs_destroy_delayed_inodes(struct btrfs_fs_info *fs_info); /* Used for readdir() */ bool btrfs_readdir_get_delayed_items(struct inode *inode, + u64 last_index, struct list_head *ins_list, struct list_head *del_list); void btrfs_readdir_put_delayed_items(struct inode *inode, diff --git a/fs/btrfs/dev-replace.c b/fs/btrfs/dev-replace.c index 5f10965fd72b..fff22ed55c42 100644 --- a/fs/btrfs/dev-replace.c +++ b/fs/btrfs/dev-replace.c @@ -792,9 +792,9 @@ static int btrfs_set_target_alloc_state(struct btrfs_device *srcdev, lockdep_assert_held(&srcdev->fs_info->chunk_mutex); - while (!find_first_extent_bit(&srcdev->alloc_state, start, - &found_start, &found_end, - CHUNK_ALLOCATED, &cached_state)) { + while (find_first_extent_bit(&srcdev->alloc_state, start, + &found_start, &found_end, + CHUNK_ALLOCATED, &cached_state)) { ret = set_extent_bit(&tgtdev->alloc_state, found_start, found_end, CHUNK_ALLOCATED, NULL); if (ret) diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c index 9b9914e5f03d..0a96ea8c1d3a 100644 --- a/fs/btrfs/disk-io.c +++ b/fs/btrfs/disk-io.c @@ -313,21 +313,16 @@ static bool check_tree_block_fsid(struct extent_buffer *eb) struct btrfs_fs_info *fs_info = eb->fs_info; struct btrfs_fs_devices *fs_devices = fs_info->fs_devices, *seed_devs; u8 fsid[BTRFS_FSID_SIZE]; - u8 *metadata_uuid; read_extent_buffer(eb, fsid, offsetof(struct btrfs_header, fsid), BTRFS_FSID_SIZE); + /* - * Checking the incompat flag is only valid for the current fs. For - * seed devices it's forbidden to have their uuid changed so reading - * ->fsid in this case is fine + * alloc_fs_devices() copies the fsid into metadata_uuid if the + * metadata_uuid is unset in the superblock, including for a seed device. + * So, we can use fs_devices->metadata_uuid. */ - if (btrfs_fs_incompat(fs_info, METADATA_UUID)) - metadata_uuid = fs_devices->metadata_uuid; - else - metadata_uuid = fs_devices->fsid; - - if (!memcmp(fsid, metadata_uuid, BTRFS_FSID_SIZE)) + if (memcmp(fsid, fs_info->fs_devices->metadata_uuid, BTRFS_FSID_SIZE) == 0) return false; list_for_each_entry(seed_devs, &fs_devices->seed_list, seed_list) @@ -1103,7 +1098,8 @@ static int btrfs_init_fs_root(struct btrfs_root *root, dev_t anon_dev) btrfs_drew_lock_init(&root->snapshot_lock); if (root->root_key.objectid != BTRFS_TREE_LOG_OBJECTID && - !btrfs_is_data_reloc_root(root)) { + !btrfs_is_data_reloc_root(root) && + is_fstree(root->root_key.objectid)) { set_bit(BTRFS_ROOT_SHAREABLE, &root->state); btrfs_check_and_init_root_item(&root->root_item); } @@ -1300,6 +1296,16 @@ static struct btrfs_root *btrfs_get_root_ref(struct btrfs_fs_info *fs_info, root = btrfs_get_global_root(fs_info, objectid); if (root) return root; + + /* + * If we're called for non-subvolume trees, and above function didn't + * find one, do not try to read it from disk. + * + * This is namely for free-space-tree and quota tree, which can change + * at runtime and should only be grabbed from fs_info. + */ + if (!is_fstree(objectid) && objectid != BTRFS_DATA_RELOC_TREE_OBJECTID) + return ERR_PTR(-ENOENT); again: root = btrfs_lookup_fs_root(fs_info, objectid); if (root) { @@ -2373,21 +2379,18 @@ int btrfs_validate_super(struct btrfs_fs_info *fs_info, ret = -EINVAL; } - if (memcmp(fs_info->fs_devices->fsid, fs_info->super_copy->fsid, - BTRFS_FSID_SIZE)) { + if (memcmp(fs_info->fs_devices->fsid, sb->fsid, BTRFS_FSID_SIZE) != 0) { btrfs_err(fs_info, "superblock fsid doesn't match fsid of fs_devices: %pU != %pU", - fs_info->super_copy->fsid, fs_info->fs_devices->fsid); + sb->fsid, fs_info->fs_devices->fsid); ret = -EINVAL; } - if (btrfs_fs_incompat(fs_info, METADATA_UUID) && - memcmp(fs_info->fs_devices->metadata_uuid, - fs_info->super_copy->metadata_uuid, BTRFS_FSID_SIZE)) { + if (memcmp(fs_info->fs_devices->metadata_uuid, btrfs_sb_fsid_ptr(sb), + BTRFS_FSID_SIZE) != 0) { btrfs_err(fs_info, "superblock metadata_uuid doesn't match metadata uuid of fs_devices: %pU != %pU", - fs_info->super_copy->metadata_uuid, - fs_info->fs_devices->metadata_uuid); + btrfs_sb_fsid_ptr(sb), fs_info->fs_devices->metadata_uuid); ret = -EINVAL; } @@ -2858,6 +2861,56 @@ static int btrfs_check_uuid_tree(struct btrfs_fs_info *fs_info) return 0; } +static int btrfs_cleanup_fs_roots(struct btrfs_fs_info *fs_info) +{ + u64 root_objectid = 0; + struct btrfs_root *gang[8]; + int i = 0; + int err = 0; + unsigned int ret = 0; + + while (1) { + spin_lock(&fs_info->fs_roots_radix_lock); + ret = radix_tree_gang_lookup(&fs_info->fs_roots_radix, + (void **)gang, root_objectid, + ARRAY_SIZE(gang)); + if (!ret) { + spin_unlock(&fs_info->fs_roots_radix_lock); + break; + } + root_objectid = gang[ret - 1]->root_key.objectid + 1; + + for (i = 0; i < ret; i++) { + /* Avoid to grab roots in dead_roots. */ + if (btrfs_root_refs(&gang[i]->root_item) == 0) { + gang[i] = NULL; + continue; + } + /* Grab all the search result for later use. */ + gang[i] = btrfs_grab_root(gang[i]); + } + spin_unlock(&fs_info->fs_roots_radix_lock); + + for (i = 0; i < ret; i++) { + if (!gang[i]) + continue; + root_objectid = gang[i]->root_key.objectid; + err = btrfs_orphan_cleanup(gang[i]); + if (err) + goto out; + btrfs_put_root(gang[i]); + } + root_objectid++; + } +out: + /* Release the uncleaned roots due to error. */ + for (; i < ret; i++) { + if (gang[i]) + btrfs_put_root(gang[i]); + } + return err; +} + /* * Some options only have meaning at mount time and shouldn't persist across * remounts, or be displayed. Clear these at the end of mount and remount @@ -3211,7 +3264,7 @@ int __cold open_ctree(struct super_block *sb, struct btrfs_fs_devices *fs_device /* check FS state, whether FS is broken. */ if (btrfs_super_flags(disk_super) & BTRFS_SUPER_FLAG_ERROR) - set_bit(BTRFS_FS_STATE_ERROR, &fs_info->fs_state); + WRITE_ONCE(fs_info->fs_error, -EUCLEAN); /* * In the long term, we'll store the compression type in the super @@ -3406,6 +3459,8 @@ int __cold open_ctree(struct super_block *sb, struct btrfs_fs_devices *fs_device btrfs_free_zone_cache(fs_info); + btrfs_check_active_zone_reservation(fs_info); + if (!sb_rdonly(sb) && fs_info->fs_devices->missing_devices && !btrfs_check_rw_degradable(fs_info, NULL)) { btrfs_warn(fs_info, @@ -4125,56 +4180,6 @@ void btrfs_drop_and_free_fs_root(struct btrfs_fs_info *fs_info, btrfs_put_root(root); } -int btrfs_cleanup_fs_roots(struct btrfs_fs_info *fs_info) -{ - u64 root_objectid = 0; - struct btrfs_root *gang[8]; - int i = 0; - int err = 0; - unsigned int ret = 0; - - while (1) { - spin_lock(&fs_info->fs_roots_radix_lock); - ret = radix_tree_gang_lookup(&fs_info->fs_roots_radix, - (void **)gang, root_objectid, - ARRAY_SIZE(gang)); - if (!ret) { - spin_unlock(&fs_info->fs_roots_radix_lock); - break; - } - root_objectid = gang[ret - 1]->root_key.objectid + 1; - - for (i = 0; i < ret; i++) { - /* Avoid to grab roots in dead_roots */ - if (btrfs_root_refs(&gang[i]->root_item) == 0) { - gang[i] = NULL; - continue; - } - /* grab all the search result for later use */ - gang[i] = btrfs_grab_root(gang[i]); - } - spin_unlock(&fs_info->fs_roots_radix_lock); - - for (i = 0; i < ret; i++) { - if (!gang[i]) - continue; - root_objectid = gang[i]->root_key.objectid; - err = btrfs_orphan_cleanup(gang[i]); - if (err) - goto out; - btrfs_put_root(gang[i]); - } - root_objectid++; - } -out: - /* release the uncleaned roots due to error */ - for (; i < ret; i++) { - if (gang[i]) - btrfs_put_root(gang[i]); - } - return err; -} - int btrfs_commit_super(struct btrfs_fs_info *fs_info) { struct btrfs_root *root = fs_info->tree_root; @@ -4217,7 +4222,7 @@ static void warn_about_uncommitted_trans(struct btrfs_fs_info *fs_info) u64 found_end; found = true; - while (!find_first_extent_bit(&trans->dirty_pages, cur, + while (find_first_extent_bit(&trans->dirty_pages, cur, &found_start, &found_end, EXTENT_DIRTY, &cached)) { dirty_bytes += found_end + 1 - found_start; cur = found_end + 1; @@ -4541,9 +4546,7 @@ static void btrfs_destroy_ordered_extents(struct btrfs_root *root) static void btrfs_destroy_all_ordered_extents(struct btrfs_fs_info *fs_info) { struct btrfs_root *root; - struct list_head splice; - - INIT_LIST_HEAD(&splice); + LIST_HEAD(splice); spin_lock(&fs_info->ordered_root_lock); list_splice_init(&fs_info->ordered_roots, &splice); @@ -4649,9 +4652,7 @@ static void btrfs_destroy_delayed_refs(struct btrfs_transaction *trans, static void btrfs_destroy_delalloc_inodes(struct btrfs_root *root) { struct btrfs_inode *btrfs_inode; - struct list_head splice; - - INIT_LIST_HEAD(&splice); + LIST_HEAD(splice); spin_lock(&root->delalloc_lock); list_splice_init(&root->delalloc_inodes, &splice); @@ -4684,9 +4685,7 @@ static void btrfs_destroy_delalloc_inodes(struct btrfs_root *root) static void btrfs_destroy_all_delalloc_inodes(struct btrfs_fs_info *fs_info) { struct btrfs_root *root; - struct list_head splice; - - INIT_LIST_HEAD(&splice); + LIST_HEAD(splice); spin_lock(&fs_info->delalloc_root_lock); list_splice_init(&fs_info->delalloc_roots, &splice); @@ -4705,21 +4704,16 @@ static void btrfs_destroy_all_delalloc_inodes(struct btrfs_fs_info *fs_info) spin_unlock(&fs_info->delalloc_root_lock); } -static int btrfs_destroy_marked_extents(struct btrfs_fs_info *fs_info, - struct extent_io_tree *dirty_pages, - int mark) +static void btrfs_destroy_marked_extents(struct btrfs_fs_info *fs_info, + struct extent_io_tree *dirty_pages, + int mark) { - int ret; struct extent_buffer *eb; u64 start = 0; u64 end; - while (1) { - ret = find_first_extent_bit(dirty_pages, start, &start, &end, - mark, NULL); - if (ret) - break; - + while (find_first_extent_bit(dirty_pages, start, &start, &end, + mark, NULL)) { clear_extent_bits(dirty_pages, start, end, mark); while (start <= end) { eb = find_extent_buffer(fs_info, start); @@ -4735,16 +4729,13 @@ static int btrfs_destroy_marked_extents(struct btrfs_fs_info *fs_info, free_extent_buffer_stale(eb); } } - - return ret; } -static int btrfs_destroy_pinned_extent(struct btrfs_fs_info *fs_info, - struct extent_io_tree *unpin) +static void btrfs_destroy_pinned_extent(struct btrfs_fs_info *fs_info, + struct extent_io_tree *unpin) { u64 start; u64 end; - int ret; while (1) { struct extent_state *cached_state = NULL; @@ -4756,9 +4747,8 @@ static int btrfs_destroy_pinned_extent(struct btrfs_fs_info *fs_info, * the same extent range. */ mutex_lock(&fs_info->unused_bg_unpin_mutex); - ret = find_first_extent_bit(unpin, 0, &start, &end, - EXTENT_DIRTY, &cached_state); - if (ret) { + if (!find_first_extent_bit(unpin, 0, &start, &end, + EXTENT_DIRTY, &cached_state)) { mutex_unlock(&fs_info->unused_bg_unpin_mutex); break; } @@ -4769,8 +4759,6 @@ static int btrfs_destroy_pinned_extent(struct btrfs_fs_info *fs_info, mutex_unlock(&fs_info->unused_bg_unpin_mutex); cond_resched(); } - - return 0; } static void btrfs_cleanup_bg_io(struct btrfs_block_group *cache) diff --git a/fs/btrfs/disk-io.h b/fs/btrfs/disk-io.h index b03767f4d7ed..02b645744a82 100644 --- a/fs/btrfs/disk-io.h +++ b/fs/btrfs/disk-io.h @@ -77,7 +77,6 @@ struct btrfs_root *btrfs_extent_root(struct btrfs_fs_info *fs_info, u64 bytenr); struct btrfs_root *btrfs_block_group_root(struct btrfs_fs_info *fs_info); void btrfs_free_fs_info(struct btrfs_fs_info *fs_info); -int btrfs_cleanup_fs_roots(struct btrfs_fs_info *fs_info); void btrfs_btree_balance_dirty(struct btrfs_fs_info *fs_info); void btrfs_btree_balance_dirty_nodelay(struct btrfs_fs_info *fs_info); void btrfs_drop_and_free_fs_root(struct btrfs_fs_info *fs_info, diff --git a/fs/btrfs/extent-io-tree.c b/fs/btrfs/extent-io-tree.c index a2315a4b8b75..ff8e117a1ace 100644 --- a/fs/btrfs/extent-io-tree.c +++ b/fs/btrfs/extent-io-tree.c @@ -831,15 +831,15 @@ static struct extent_state *find_first_extent_bit_state(struct extent_io_tree *t * * Note: If there are multiple bits set in @bits, any of them will match. * - * Return 0 if we find something, and update @start_ret and @end_ret. - * Return 1 if we found nothing. + * Return true if we find something, and update @start_ret and @end_ret. + * Return false if we found nothing. */ -int find_first_extent_bit(struct extent_io_tree *tree, u64 start, - u64 *start_ret, u64 *end_ret, u32 bits, - struct extent_state **cached_state) +bool find_first_extent_bit(struct extent_io_tree *tree, u64 start, + u64 *start_ret, u64 *end_ret, u32 bits, + struct extent_state **cached_state) { struct extent_state *state; - int ret = 1; + bool ret = false; spin_lock(&tree->lock); if (cached_state && *cached_state) { @@ -863,7 +863,7 @@ got_it: cache_state_if_flags(state, cached_state, 0); *start_ret = state->start; *end_ret = state->end; - ret = 0; + ret = true; } out: spin_unlock(&tree->lock); diff --git a/fs/btrfs/extent-io-tree.h b/fs/btrfs/extent-io-tree.h index fbd3b275ab1c..28c23a23d121 100644 --- a/fs/btrfs/extent-io-tree.h +++ b/fs/btrfs/extent-io-tree.h @@ -182,9 +182,9 @@ int convert_extent_bit(struct extent_io_tree *tree, u64 start, u64 end, u32 bits, u32 clear_bits, struct extent_state **cached_state); -int find_first_extent_bit(struct extent_io_tree *tree, u64 start, - u64 *start_ret, u64 *end_ret, u32 bits, - struct extent_state **cached_state); +bool find_first_extent_bit(struct extent_io_tree *tree, u64 start, + u64 *start_ret, u64 *end_ret, u32 bits, + struct extent_state **cached_state); void find_first_clear_extent_bit(struct extent_io_tree *tree, u64 start, u64 *start_ret, u64 *end_ret, u32 bits); int find_contiguous_extent_bit(struct extent_io_tree *tree, u64 start, diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c index 911908ea5f6f..f356f08b55cb 100644 --- a/fs/btrfs/extent-tree.c +++ b/fs/btrfs/extent-tree.c @@ -69,27 +69,6 @@ static int block_group_bits(struct btrfs_block_group *cache, u64 bits) return (cache->flags & bits) == bits; } -int btrfs_add_excluded_extent(struct btrfs_fs_info *fs_info, - u64 start, u64 num_bytes) -{ - u64 end = start + num_bytes - 1; - set_extent_bit(&fs_info->excluded_extents, start, end, - EXTENT_UPTODATE, NULL); - return 0; -} - -void btrfs_free_excluded_extents(struct btrfs_block_group *cache) -{ - struct btrfs_fs_info *fs_info = cache->fs_info; - u64 start, end; - - start = cache->start; - end = start + cache->length - 1; - - clear_extent_bits(&fs_info->excluded_extents, start, end, - EXTENT_UPTODATE); -} - /* simple helper to search for an existing data extent at a given offset */ int btrfs_lookup_data_extent(struct btrfs_fs_info *fs_info, u64 start, u64 len) { @@ -187,8 +166,10 @@ search_again: num_refs = btrfs_extent_refs(leaf, ei); extent_flags = btrfs_extent_flags(leaf, ei); } else { - ret = -EINVAL; - btrfs_print_v0_err(fs_info); + ret = -EUCLEAN; + btrfs_err(fs_info, + "unexpected extent item size, has %u expect >= %zu", + item_size, sizeof(*ei)); if (trans) btrfs_abort_transaction(trans, ret); else @@ -402,11 +383,11 @@ int btrfs_get_extent_inline_ref_type(const struct extent_buffer *eb, } } + WARN_ON(1); btrfs_print_leaf(eb); btrfs_err(eb->fs_info, "eb %llu iref 0x%lx invalid extent inline ref type %d", eb->start, (unsigned long)iref, type); - WARN_ON(1); return BTRFS_REF_TYPE_INVALID; } @@ -624,12 +605,12 @@ static noinline int remove_extent_data_ref(struct btrfs_trans_handle *trans, ref2 = btrfs_item_ptr(leaf, path->slots[0], struct btrfs_shared_data_ref); num_refs = btrfs_shared_data_ref_count(leaf, ref2); - } else if (unlikely(key.type == BTRFS_EXTENT_REF_V0_KEY)) { - btrfs_print_v0_err(trans->fs_info); - btrfs_abort_transaction(trans, -EINVAL); - return -EINVAL; } else { - BUG(); + btrfs_err(trans->fs_info, + "unrecognized backref key (%llu %u %llu)", + key.objectid, key.type, key.offset); + btrfs_abort_transaction(trans, -EUCLEAN); + return -EUCLEAN; } BUG_ON(num_refs < refs_to_drop); @@ -660,7 +641,6 @@ static noinline u32 extent_data_ref_count(struct btrfs_path *path, leaf = path->nodes[0]; btrfs_item_key_to_cpu(leaf, &key, path->slots[0]); - BUG_ON(key.type == BTRFS_EXTENT_REF_V0_KEY); if (iref) { /* * If type is invalid, we should have bailed out earlier than @@ -869,6 +849,11 @@ again: err = -ENOENT; goto out; } else if (WARN_ON(ret)) { + btrfs_print_leaf(path->nodes[0]); + btrfs_err(fs_info, +"extent item not found for insert, bytenr %llu num_bytes %llu parent %llu root_objectid %llu owner %llu offset %llu", + bytenr, num_bytes, parent, root_objectid, owner, + offset); err = -EIO; goto out; } @@ -876,8 +861,10 @@ again: leaf = path->nodes[0]; item_size = btrfs_item_size(leaf, path->slots[0]); if (unlikely(item_size < sizeof(*ei))) { - err = -EINVAL; - btrfs_print_v0_err(fs_info); + err = -EUCLEAN; + btrfs_err(fs_info, + "unexpected extent item size, has %llu expect >= %zu", + item_size, sizeof(*ei)); btrfs_abort_transaction(trans, err); goto out; } @@ -1079,13 +1066,13 @@ static int lookup_extent_backref(struct btrfs_trans_handle *trans, /* * helper to update/remove inline back ref */ -static noinline_for_stack -void update_inline_extent_backref(struct btrfs_path *path, +static noinline_for_stack int update_inline_extent_backref(struct btrfs_path *path, struct btrfs_extent_inline_ref *iref, int refs_to_mod, struct btrfs_delayed_extent_op *extent_op) { struct extent_buffer *leaf = path->nodes[0]; + struct btrfs_fs_info *fs_info = leaf->fs_info; struct btrfs_extent_item *ei; struct btrfs_extent_data_ref *dref = NULL; struct btrfs_shared_data_ref *sref = NULL; @@ -1098,18 +1085,33 @@ void update_inline_extent_backref(struct btrfs_path *path, ei = btrfs_item_ptr(leaf, path->slots[0], struct btrfs_extent_item); refs = btrfs_extent_refs(leaf, ei); - WARN_ON(refs_to_mod < 0 && refs + refs_to_mod <= 0); + if (unlikely(refs_to_mod < 0 && refs + refs_to_mod <= 0)) { + struct btrfs_key key; + u32 extent_size; + + btrfs_item_key_to_cpu(leaf, &key, path->slots[0]); + if (key.type == BTRFS_METADATA_ITEM_KEY) + extent_size = fs_info->nodesize; + else + extent_size = key.offset; + btrfs_print_leaf(leaf); + btrfs_err(fs_info, + "invalid refs_to_mod for extent %llu num_bytes %u, has %d expect >= -%llu", + key.objectid, extent_size, refs_to_mod, refs); + return -EUCLEAN; + } refs += refs_to_mod; btrfs_set_extent_refs(leaf, ei, refs); if (extent_op) __run_delayed_extent_op(extent_op, leaf, ei); + type = btrfs_get_extent_inline_ref_type(leaf, iref, BTRFS_REF_TYPE_ANY); /* - * If type is invalid, we should have bailed out after - * lookup_inline_extent_backref(). + * Function btrfs_get_extent_inline_ref_type() has already printed + * error messages. */ - type = btrfs_get_extent_inline_ref_type(leaf, iref, BTRFS_REF_TYPE_ANY); - ASSERT(type != BTRFS_REF_TYPE_INVALID); + if (unlikely(type == BTRFS_REF_TYPE_INVALID)) + return -EUCLEAN; if (type == BTRFS_EXTENT_DATA_REF_KEY) { dref = (struct btrfs_extent_data_ref *)(&iref->offset); @@ -1119,10 +1121,43 @@ void update_inline_extent_backref(struct btrfs_path *path, refs = btrfs_shared_data_ref_count(leaf, sref); } else { refs = 1; - BUG_ON(refs_to_mod != -1); + /* + * For tree blocks we can only drop one ref for it, and tree + * blocks should not have refs > 1. + * + * Furthermore if we're inserting a new inline backref, we + * won't reach this path either. That would be + * setup_inline_extent_backref(). + */ + if (unlikely(refs_to_mod != -1)) { + struct btrfs_key key; + + btrfs_item_key_to_cpu(leaf, &key, path->slots[0]); + + btrfs_print_leaf(leaf); + btrfs_err(fs_info, + "invalid refs_to_mod for tree block %llu, has %d expect -1", + key.objectid, refs_to_mod); + return -EUCLEAN; + } } - BUG_ON(refs_to_mod < 0 && refs < -refs_to_mod); + if (unlikely(refs_to_mod < 0 && refs < -refs_to_mod)) { + struct btrfs_key key; + u32 extent_size; + + btrfs_item_key_to_cpu(leaf, &key, path->slots[0]); + if (key.type == BTRFS_METADATA_ITEM_KEY) + extent_size = fs_info->nodesize; + else + extent_size = key.offset; + btrfs_print_leaf(leaf); + btrfs_err(fs_info, +"invalid refs_to_mod for backref entry, iref %lu extent %llu num_bytes %u, has %d expect >= -%llu", + (unsigned long)iref, key.objectid, extent_size, + refs_to_mod, refs); + return -EUCLEAN; + } refs += refs_to_mod; if (refs > 0) { @@ -1142,6 +1177,7 @@ void update_inline_extent_backref(struct btrfs_path *path, btrfs_truncate_item(path, item_size, 1); } btrfs_mark_buffer_dirty(leaf); + return 0; } static noinline_for_stack @@ -1170,7 +1206,7 @@ int insert_inline_extent_backref(struct btrfs_trans_handle *trans, bytenr, num_bytes, root_objectid, path->slots[0]); return -EUCLEAN; } - update_inline_extent_backref(path, iref, refs_to_add, extent_op); + ret = update_inline_extent_backref(path, iref, refs_to_add, extent_op); } else if (ret == -ENOENT) { setup_inline_extent_backref(trans->fs_info, path, iref, parent, root_objectid, owner, offset, @@ -1190,7 +1226,7 @@ static int remove_extent_backref(struct btrfs_trans_handle *trans, BUG_ON(!is_data && refs_to_drop != 1); if (iref) - update_inline_extent_backref(path, iref, -refs_to_drop, NULL); + ret = update_inline_extent_backref(path, iref, -refs_to_drop, NULL); else if (is_data) ret = remove_extent_data_ref(trans, root, path, refs_to_drop); else @@ -1629,8 +1665,10 @@ again: item_size = btrfs_item_size(leaf, path->slots[0]); if (unlikely(item_size < sizeof(*ei))) { - err = -EINVAL; - btrfs_print_v0_err(fs_info); + err = -EUCLEAN; + btrfs_err(fs_info, + "unexpected extent item size, has %u expect >= %zu", + item_size, sizeof(*ei)); btrfs_abort_transaction(trans, err); goto out; } @@ -2751,9 +2789,8 @@ int btrfs_finish_extent_commit(struct btrfs_trans_handle *trans) struct extent_state *cached_state = NULL; mutex_lock(&fs_info->unused_bg_unpin_mutex); - ret = find_first_extent_bit(unpin, 0, &start, &end, - EXTENT_DIRTY, &cached_state); - if (ret) { + if (!find_first_extent_bit(unpin, 0, &start, &end, + EXTENT_DIRTY, &cached_state)) { mutex_unlock(&fs_info->unused_bg_unpin_mutex); break; } @@ -3059,8 +3096,10 @@ static int __btrfs_free_extent(struct btrfs_trans_handle *trans, leaf = path->nodes[0]; item_size = btrfs_item_size(leaf, extent_slot); if (unlikely(item_size < sizeof(*ei))) { - ret = -EINVAL; - btrfs_print_v0_err(info); + ret = -EUCLEAN; + btrfs_err(trans->fs_info, + "unexpected extent item size, has %u expect >= %zu", + item_size, sizeof(*ei)); btrfs_abort_transaction(trans, ret); goto out; } @@ -3351,11 +3390,38 @@ int btrfs_free_extent(struct btrfs_trans_handle *trans, struct btrfs_ref *ref) } enum btrfs_loop_type { + /* + * Start caching block groups but do not wait for progress or for them + * to be done. + */ LOOP_CACHING_NOWAIT, + + /* + * Wait for the block group free_space >= the space we're waiting for if + * the block group isn't cached. + */ LOOP_CACHING_WAIT, + + /* + * Allow allocations to happen from block groups that do not yet have a + * size classification. + */ LOOP_UNSET_SIZE_CLASS, + + /* + * Allocate a chunk and then retry the allocation. + */ LOOP_ALLOC_CHUNK, + + /* + * Ignore the size class restrictions for this allocation. + */ LOOP_WRONG_SIZE_CLASS, + + /* + * Ignore the empty size, only try to allocate the number of bytes + * needed for this allocation. + */ LOOP_NO_EMPTY_SIZE, }; @@ -3427,7 +3493,6 @@ btrfs_release_block_group(struct btrfs_block_group *cache, * Helper function for find_free_extent(). * * Return -ENOENT to inform caller that we need fallback to unclustered mode. - * Return -EAGAIN to inform caller that we need to re-search this block group * Return >0 to inform caller that we find nothing * Return 0 means we have found a location and set ffe_ctl->found_offset. */ @@ -3508,14 +3573,6 @@ refill_cluster: trace_btrfs_reserve_extent_cluster(bg, ffe_ctl); return 0; } - } else if (!ffe_ctl->cached && ffe_ctl->loop > LOOP_CACHING_NOWAIT && - !ffe_ctl->retry_clustered) { - spin_unlock(&last_ptr->refill_lock); - - ffe_ctl->retry_clustered = true; - btrfs_wait_block_group_cache_progress(bg, ffe_ctl->num_bytes + - ffe_ctl->empty_cluster + ffe_ctl->empty_size); - return -EAGAIN; } /* * At this point we either didn't find a cluster or we weren't able to @@ -3530,7 +3587,6 @@ refill_cluster: /* * Return >0 to inform caller that we find nothing * Return 0 when we found an free extent and set ffe_ctrl->found_offset - * Return -EAGAIN to inform caller that we need to re-search this block group */ static int find_free_extent_unclustered(struct btrfs_block_group *bg, struct find_free_extent_ctl *ffe_ctl) @@ -3568,25 +3624,8 @@ static int find_free_extent_unclustered(struct btrfs_block_group *bg, offset = btrfs_find_space_for_alloc(bg, ffe_ctl->search_start, ffe_ctl->num_bytes, ffe_ctl->empty_size, &ffe_ctl->max_extent_size); - - /* - * If we didn't find a chunk, and we haven't failed on this block group - * before, and this block group is in the middle of caching and we are - * ok with waiting, then go ahead and wait for progress to be made, and - * set @retry_unclustered to true. - * - * If @retry_unclustered is true then we've already waited on this - * block group once and should move on to the next block group. - */ - if (!offset && !ffe_ctl->retry_unclustered && !ffe_ctl->cached && - ffe_ctl->loop > LOOP_CACHING_NOWAIT) { - btrfs_wait_block_group_cache_progress(bg, ffe_ctl->num_bytes + - ffe_ctl->empty_size); - ffe_ctl->retry_unclustered = true; - return -EAGAIN; - } else if (!offset) { + if (!offset) return 1; - } ffe_ctl->found_offset = offset; return 0; } @@ -3600,7 +3639,7 @@ static int do_allocation_clustered(struct btrfs_block_group *block_group, /* We want to try and use the cluster allocator, so lets look there */ if (ffe_ctl->last_ptr && ffe_ctl->use_cluster) { ret = find_free_extent_clustered(block_group, ffe_ctl, bg_ret); - if (ret >= 0 || ret == -EAGAIN) + if (ret >= 0) return ret; /* ret == -ENOENT case falls through */ } @@ -3685,7 +3724,9 @@ static int do_allocation_zoned(struct btrfs_block_group *block_group, } spin_unlock(&block_group->lock); - if (!ret && !btrfs_zone_activate(block_group)) { + /* Metadata block group is activated at write time. */ + if (!ret && (block_group->flags & BTRFS_BLOCK_GROUP_DATA) && + !btrfs_zone_activate(block_group)) { ret = 1; /* * May need to clear fs_info->{treelog,data_reloc}_bg. @@ -3709,7 +3750,8 @@ static int do_allocation_zoned(struct btrfs_block_group *block_group, fs_info->data_reloc_bg == 0); if (block_group->ro || - test_bit(BLOCK_GROUP_FLAG_ZONED_DATA_RELOC, &block_group->runtime_flags)) { + (!ffe_ctl->for_data_reloc && + test_bit(BLOCK_GROUP_FLAG_ZONED_DATA_RELOC, &block_group->runtime_flags))) { ret = 1; goto out; } @@ -3752,8 +3794,26 @@ static int do_allocation_zoned(struct btrfs_block_group *block_group, if (ffe_ctl->for_treelog && !fs_info->treelog_bg) fs_info->treelog_bg = block_group->start; - if (ffe_ctl->for_data_reloc && !fs_info->data_reloc_bg) - fs_info->data_reloc_bg = block_group->start; + if (ffe_ctl->for_data_reloc) { + if (!fs_info->data_reloc_bg) + fs_info->data_reloc_bg = block_group->start; + /* + * Do not allow allocations from this block group, unless it is + * for data relocation. Compared to increasing the ->ro, setting + * the ->zoned_data_reloc_ongoing flag still allows nocow + * writers to come in. See btrfs_inc_nocow_writers(). + * + * We need to disable an allocation to avoid an allocation of + * regular (non-relocation data) extent. With mix of relocation + * extents and regular extents, we can dispatch WRITE commands + * (for relocation extents) and ZONE APPEND commands (for + * regular extents) at the same time to the same zone, which + * easily break the write pointer. + * + * Also, this flag avoids this block group to be zone finished. + */ + set_bit(BLOCK_GROUP_FLAG_ZONED_DATA_RELOC, &block_group->runtime_flags); + } ffe_ctl->found_offset = start + block_group->alloc_offset; block_group->alloc_offset += num_bytes; @@ -3771,24 +3831,8 @@ static int do_allocation_zoned(struct btrfs_block_group *block_group, out: if (ret && ffe_ctl->for_treelog) fs_info->treelog_bg = 0; - if (ret && ffe_ctl->for_data_reloc && - fs_info->data_reloc_bg == block_group->start) { - /* - * Do not allow further allocations from this block group. - * Compared to increasing the ->ro, setting the - * ->zoned_data_reloc_ongoing flag still allows nocow - * writers to come in. See btrfs_inc_nocow_writers(). - * - * We need to disable an allocation to avoid an allocation of - * regular (non-relocation data) extent. With mix of relocation - * extents and regular extents, we can dispatch WRITE commands - * (for relocation extents) and ZONE APPEND commands (for - * regular extents) at the same time to the same zone, which - * easily break the write pointer. - */ - set_bit(BLOCK_GROUP_FLAG_ZONED_DATA_RELOC, &block_group->runtime_flags); + if (ret && ffe_ctl->for_data_reloc) fs_info->data_reloc_bg = 0; - } spin_unlock(&fs_info->relocation_bg_lock); spin_unlock(&fs_info->treelog_bg_lock); spin_unlock(&block_group->lock); @@ -3816,8 +3860,7 @@ static void release_block_group(struct btrfs_block_group *block_group, { switch (ffe_ctl->policy) { case BTRFS_EXTENT_ALLOC_CLUSTERED: - ffe_ctl->retry_clustered = false; - ffe_ctl->retry_unclustered = false; + ffe_ctl->retry_uncached = false; break; case BTRFS_EXTENT_ALLOC_ZONED: /* Nothing to do */ @@ -3861,6 +3904,10 @@ static void found_extent(struct find_free_extent_ctl *ffe_ctl, static int can_allocate_chunk_zoned(struct btrfs_fs_info *fs_info, struct find_free_extent_ctl *ffe_ctl) { + /* Block group's activeness is not a requirement for METADATA block groups. */ + if (!(ffe_ctl->flags & BTRFS_BLOCK_GROUP_DATA)) + return 0; + /* If we can activate new zone, just allocate a chunk and use it */ if (btrfs_can_activate_zone(fs_info->fs_devices, ffe_ctl->flags)) return 0; @@ -3949,15 +3996,7 @@ static int find_free_extent_update_loop(struct btrfs_fs_info *fs_info, if (ffe_ctl->index < BTRFS_NR_RAID_TYPES) return 1; - /* - * LOOP_CACHING_NOWAIT, search partially cached block groups, kicking - * caching kthreads as we move along - * LOOP_CACHING_WAIT, search everything, and wait if our bg is caching - * LOOP_UNSET_SIZE_CLASS, allow unset size class - * LOOP_ALLOC_CHUNK, force a chunk allocation and try again - * LOOP_NO_EMPTY_SIZE, set empty_size and empty_cluster to 0 and try - * again - */ + /* See the comments for btrfs_loop_type for an explanation of the phases. */ if (ffe_ctl->loop < LOOP_NO_EMPTY_SIZE) { ffe_ctl->index = 0; /* @@ -4168,9 +4207,7 @@ static noinline int find_free_extent(struct btrfs_root *root, ffe_ctl->orig_have_caching_bg = false; ffe_ctl->index = btrfs_bg_flags_to_raid_index(ffe_ctl->flags); ffe_ctl->loop = 0; - /* For clustered allocation */ - ffe_ctl->retry_clustered = false; - ffe_ctl->retry_unclustered = false; + ffe_ctl->retry_uncached = false; ffe_ctl->cached = 0; ffe_ctl->max_extent_size = 0; ffe_ctl->total_free_space = 0; @@ -4310,24 +4347,23 @@ have_block_group: ret = 0; } - if (unlikely(block_group->cached == BTRFS_CACHE_ERROR)) + if (unlikely(block_group->cached == BTRFS_CACHE_ERROR)) { + if (!cache_block_group_error) + cache_block_group_error = -EIO; goto loop; + } if (!find_free_extent_check_size_class(ffe_ctl, block_group)) goto loop; bg_ret = NULL; ret = do_allocation(block_group, ffe_ctl, &bg_ret); - if (ret == 0) { - if (bg_ret && bg_ret != block_group) { - btrfs_release_block_group(block_group, - ffe_ctl->delalloc); - block_group = bg_ret; - } - } else if (ret == -EAGAIN) { - goto have_block_group; - } else if (ret > 0) { + if (ret > 0) goto loop; + + if (bg_ret && bg_ret != block_group) { + btrfs_release_block_group(block_group, ffe_ctl->delalloc); + block_group = bg_ret; } /* Checks */ @@ -4368,6 +4404,15 @@ have_block_group: btrfs_release_block_group(block_group, ffe_ctl->delalloc); break; loop: + if (!ffe_ctl->cached && ffe_ctl->loop > LOOP_CACHING_NOWAIT && + !ffe_ctl->retry_uncached) { + ffe_ctl->retry_uncached = true; + btrfs_wait_block_group_cache_progress(block_group, + ffe_ctl->num_bytes + + ffe_ctl->empty_cluster + + ffe_ctl->empty_size); + goto have_block_group; + } release_block_group(block_group, ffe_ctl, ffe_ctl->delalloc); cond_resched(); } diff --git a/fs/btrfs/extent-tree.h b/fs/btrfs/extent-tree.h index 429d5c570061..88c249c37516 100644 --- a/fs/btrfs/extent-tree.h +++ b/fs/btrfs/extent-tree.h @@ -48,16 +48,11 @@ struct find_free_extent_ctl { int loop; /* - * Whether we're refilling a cluster, if true we need to re-search - * current block group but don't try to refill the cluster again. + * Set to true if we're retrying the allocation on this block group + * after waiting for caching progress, this is so that we retry only + * once before moving on to another block group. */ - bool retry_clustered; - - /* - * Whether we're updating free space cache, if true we need to re-search - * current block group but don't try updating free space cache again. - */ - bool retry_unclustered; + bool retry_uncached; /* If current block group is cached */ int cached; @@ -96,9 +91,6 @@ int btrfs_get_extent_inline_ref_type(const struct extent_buffer *eb, enum btrfs_inline_ref_type is_data); u64 hash_extent_data_ref(u64 root_objectid, u64 owner, u64 offset); -int btrfs_add_excluded_extent(struct btrfs_fs_info *fs_info, - u64 start, u64 num_bytes); -void btrfs_free_excluded_extents(struct btrfs_block_group *cache); int btrfs_run_delayed_refs(struct btrfs_trans_handle *trans, unsigned long count); void btrfs_cleanup_ref_head_accounting(struct btrfs_fs_info *fs_info, struct btrfs_delayed_ref_root *delayed_refs, diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c index a91d5ad27984..ac3fca5a5e41 100644 --- a/fs/btrfs/extent_io.c +++ b/fs/btrfs/extent_io.c @@ -181,34 +181,9 @@ void extent_range_clear_dirty_for_io(struct inode *inode, u64 start, u64 end) } } -void extent_range_redirty_for_io(struct inode *inode, u64 start, u64 end) -{ - struct address_space *mapping = inode->i_mapping; - unsigned long index = start >> PAGE_SHIFT; - unsigned long end_index = end >> PAGE_SHIFT; - struct folio *folio; - - while (index <= end_index) { - folio = filemap_get_folio(mapping, index); - filemap_dirty_folio(mapping, folio); - folio_account_redirty(folio); - index += folio_nr_pages(folio); - folio_put(folio); - } -} - -/* - * Process one page for __process_pages_contig(). - * - * Return >0 if we hit @page == @locked_page. - * Return 0 if we updated the page status. - * Return -EGAIN if the we need to try again. - * (For PAGE_LOCK case but got dirty page or page not belong to mapping) - */ -static int process_one_page(struct btrfs_fs_info *fs_info, - struct address_space *mapping, - struct page *page, struct page *locked_page, - unsigned long page_ops, u64 start, u64 end) +static void process_one_page(struct btrfs_fs_info *fs_info, + struct page *page, struct page *locked_page, + unsigned long page_ops, u64 start, u64 end) { u32 len; @@ -224,94 +199,36 @@ static int process_one_page(struct btrfs_fs_info *fs_info, if (page_ops & PAGE_END_WRITEBACK) btrfs_page_clamp_clear_writeback(fs_info, page, start, len); - if (page == locked_page) - return 1; - - if (page_ops & PAGE_LOCK) { - int ret; - - ret = btrfs_page_start_writer_lock(fs_info, page, start, len); - if (ret) - return ret; - if (!PageDirty(page) || page->mapping != mapping) { - btrfs_page_end_writer_lock(fs_info, page, start, len); - return -EAGAIN; - } - } - if (page_ops & PAGE_UNLOCK) + if (page != locked_page && (page_ops & PAGE_UNLOCK)) btrfs_page_end_writer_lock(fs_info, page, start, len); - return 0; } -static int __process_pages_contig(struct address_space *mapping, - struct page *locked_page, - u64 start, u64 end, unsigned long page_ops, - u64 *processed_end) +static void __process_pages_contig(struct address_space *mapping, + struct page *locked_page, u64 start, u64 end, + unsigned long page_ops) { struct btrfs_fs_info *fs_info = btrfs_sb(mapping->host->i_sb); pgoff_t start_index = start >> PAGE_SHIFT; pgoff_t end_index = end >> PAGE_SHIFT; pgoff_t index = start_index; - unsigned long pages_processed = 0; struct folio_batch fbatch; - int err = 0; int i; - if (page_ops & PAGE_LOCK) { - ASSERT(page_ops == PAGE_LOCK); - ASSERT(processed_end && *processed_end == start); - } - folio_batch_init(&fbatch); while (index <= end_index) { int found_folios; found_folios = filemap_get_folios_contig(mapping, &index, end_index, &fbatch); - - if (found_folios == 0) { - /* - * Only if we're going to lock these pages, we can find - * nothing at @index. - */ - ASSERT(page_ops & PAGE_LOCK); - err = -EAGAIN; - goto out; - } - for (i = 0; i < found_folios; i++) { - int process_ret; struct folio *folio = fbatch.folios[i]; - process_ret = process_one_page(fs_info, mapping, - &folio->page, locked_page, page_ops, - start, end); - if (process_ret < 0) { - err = -EAGAIN; - folio_batch_release(&fbatch); - goto out; - } - pages_processed += folio_nr_pages(folio); + + process_one_page(fs_info, &folio->page, locked_page, + page_ops, start, end); } folio_batch_release(&fbatch); cond_resched(); } -out: - if (err && processed_end) { - /* - * Update @processed_end. I know this is awful since it has - * two different return value patterns (inclusive vs exclusive). - * - * But the exclusive pattern is necessary if @start is 0, or we - * underflow and check against processed_end won't work as - * expected. - */ - if (pages_processed) - *processed_end = min(end, - ((u64)(start_index + pages_processed) << PAGE_SHIFT) - 1); - else - *processed_end = start; - } - return err; } static noinline void __unlock_for_delalloc(struct inode *inode, @@ -326,29 +243,63 @@ static noinline void __unlock_for_delalloc(struct inode *inode, return; __process_pages_contig(inode->i_mapping, locked_page, start, end, - PAGE_UNLOCK, NULL); + PAGE_UNLOCK); } static noinline int lock_delalloc_pages(struct inode *inode, struct page *locked_page, - u64 delalloc_start, - u64 delalloc_end) + u64 start, + u64 end) { - unsigned long index = delalloc_start >> PAGE_SHIFT; - unsigned long end_index = delalloc_end >> PAGE_SHIFT; - u64 processed_end = delalloc_start; - int ret; + struct btrfs_fs_info *fs_info = btrfs_sb(inode->i_sb); + struct address_space *mapping = inode->i_mapping; + pgoff_t start_index = start >> PAGE_SHIFT; + pgoff_t end_index = end >> PAGE_SHIFT; + pgoff_t index = start_index; + u64 processed_end = start; + struct folio_batch fbatch; - ASSERT(locked_page); if (index == locked_page->index && index == end_index) return 0; - ret = __process_pages_contig(inode->i_mapping, locked_page, delalloc_start, - delalloc_end, PAGE_LOCK, &processed_end); - if (ret == -EAGAIN && processed_end > delalloc_start) - __unlock_for_delalloc(inode, locked_page, delalloc_start, - processed_end); - return ret; + folio_batch_init(&fbatch); + while (index <= end_index) { + unsigned int found_folios, i; + + found_folios = filemap_get_folios_contig(mapping, &index, + end_index, &fbatch); + if (found_folios == 0) + goto out; + + for (i = 0; i < found_folios; i++) { + struct page *page = &fbatch.folios[i]->page; + u32 len = end + 1 - start; + + if (page == locked_page) + continue; + + if (btrfs_page_start_writer_lock(fs_info, page, start, + len)) + goto out; + + if (!PageDirty(page) || page->mapping != mapping) { + btrfs_page_end_writer_lock(fs_info, page, start, + len); + goto out; + } + + processed_end = page_offset(page) + PAGE_SIZE - 1; + } + folio_batch_release(&fbatch); + cond_resched(); + } + + return 0; +out: + folio_batch_release(&fbatch); + if (processed_end > start) + __unlock_for_delalloc(inode, locked_page, start, processed_end); + return -EAGAIN; } /* @@ -467,7 +418,7 @@ void extent_clear_unlock_delalloc(struct btrfs_inode *inode, u64 start, u64 end, clear_extent_bit(&inode->io_tree, start, end, clear_bits, NULL); __process_pages_contig(inode->vfs_inode.i_mapping, locked_page, - start, end, page_ops, NULL); + start, end, page_ops); } static bool btrfs_verify_page(struct page *page, u64 start) @@ -497,31 +448,6 @@ static void end_page_read(struct page *page, bool uptodate, u64 start, u32 len) btrfs_subpage_end_reader(fs_info, page, start, len); } -/* lots and lots of room for performance fixes in the end_bio funcs */ - -void end_extent_writepage(struct page *page, int err, u64 start, u64 end) -{ - struct btrfs_inode *inode; - const bool uptodate = (err == 0); - int ret = 0; - - ASSERT(page && page->mapping); - inode = BTRFS_I(page->mapping->host); - btrfs_writepage_endio_finish_ordered(inode, page, start, end, uptodate); - - if (!uptodate) { - const struct btrfs_fs_info *fs_info = inode->root->fs_info; - u32 len; - - ASSERT(end + 1 - start <= U32_MAX); - len = end + 1 - start; - - btrfs_page_clear_uptodate(fs_info, page, start, len); - ret = err < 0 ? err : -EIO; - mapping_set_error(page->mapping, ret); - } -} - /* * after a writepage IO is done, we need to: * clear the uptodate bits on error @@ -902,7 +828,30 @@ static void submit_extent_page(struct btrfs_bio_ctrl *bio_ctrl, size -= len; pg_offset += len; disk_bytenr += len; - bio_ctrl->len_to_oe_boundary -= len; + + /* + * len_to_oe_boundary defaults to U32_MAX, which isn't page or + * sector aligned. alloc_new_bio() then sets it to the end of + * our ordered extent for writes into zoned devices. + * + * When len_to_oe_boundary is tracking an ordered extent, we + * trust the ordered extent code to align things properly, and + * the check above to cap our write to the ordered extent + * boundary is correct. + * + * When len_to_oe_boundary is U32_MAX, the cap above would + * result in a 4095 byte IO for the last page right before + * we hit the bio limit of UINT_MAX. bio_add_page() has all + * the checks required to make sure we don't overflow the bio, + * and we should just ignore len_to_oe_boundary completely + * unless we're using it to track an ordered extent. + * + * It's pretty hard to make a bio sized U32_MAX, but it can + * happen when the page cache is able to feed us contiguous + * pages for large extents. + */ + if (bio_ctrl->len_to_oe_boundary != U32_MAX) + bio_ctrl->len_to_oe_boundary -= len; /* Ordered extent boundary: move on to a new bio. */ if (bio_ctrl->len_to_oe_boundary == 0) @@ -1220,38 +1169,45 @@ static inline void contiguous_readpages(struct page *pages[], int nr_pages, static noinline_for_stack int writepage_delalloc(struct btrfs_inode *inode, struct page *page, struct writeback_control *wbc) { - const u64 page_end = page_offset(page) + PAGE_SIZE - 1; - u64 delalloc_start = page_offset(page); + const u64 page_start = page_offset(page); + const u64 page_end = page_start + PAGE_SIZE - 1; + u64 delalloc_start = page_start; + u64 delalloc_end = page_end; u64 delalloc_to_write = 0; - /* How many pages are started by btrfs_run_delalloc_range() */ - unsigned long nr_written = 0; - int ret; - int page_started = 0; + int ret = 0; while (delalloc_start < page_end) { - u64 delalloc_end = page_end; - bool found; - - found = find_lock_delalloc_range(&inode->vfs_inode, page, - &delalloc_start, - &delalloc_end); - if (!found) { + delalloc_end = page_end; + if (!find_lock_delalloc_range(&inode->vfs_inode, page, + &delalloc_start, &delalloc_end)) { delalloc_start = delalloc_end + 1; continue; } + ret = btrfs_run_delalloc_range(inode, page, delalloc_start, - delalloc_end, &page_started, &nr_written, wbc); - if (ret) + delalloc_end, wbc); + if (ret < 0) return ret; - /* - * delalloc_end is already one less than the total length, so - * we don't subtract one from PAGE_SIZE - */ - delalloc_to_write += (delalloc_end - delalloc_start + - PAGE_SIZE) >> PAGE_SHIFT; delalloc_start = delalloc_end + 1; } + + /* + * delalloc_end is already one less than the total length, so + * we don't subtract one from PAGE_SIZE + */ + delalloc_to_write += + DIV_ROUND_UP(delalloc_end + 1 - page_start, PAGE_SIZE); + + /* + * If btrfs_run_dealloc_range() already started I/O and unlocked + * the pages, we just need to account for them here. + */ + if (ret == 1) { + wbc->nr_to_write -= delalloc_to_write; + return 1; + } + if (wbc->nr_to_write < delalloc_to_write) { int thresh = 8192; @@ -1261,16 +1217,6 @@ static noinline_for_stack int writepage_delalloc(struct btrfs_inode *inode, thresh); } - /* Did btrfs_run_dealloc_range() already unlock and start the IO? */ - if (page_started) { - /* - * We've unlocked the page, so we can't update the mapping's - * writeback index, just update nr_to_write. - */ - wbc->nr_to_write -= nr_written; - return 1; - } - return 0; } @@ -1359,6 +1305,7 @@ static noinline_for_stack int __extent_writepage_io(struct btrfs_inode *inode, bio_ctrl->end_io_func = end_bio_extent_writepage; while (cur <= end) { + u32 len = end - cur + 1; u64 disk_bytenr; u64 em_end; u64 dirty_range_start = cur; @@ -1366,8 +1313,8 @@ static noinline_for_stack int __extent_writepage_io(struct btrfs_inode *inode, u32 iosize; if (cur >= i_size) { - btrfs_writepage_endio_finish_ordered(inode, page, cur, - end, true); + btrfs_mark_ordered_io_finished(inode, page, cur, len, + true); /* * This range is beyond i_size, thus we don't need to * bother writing back. @@ -1376,7 +1323,7 @@ static noinline_for_stack int __extent_writepage_io(struct btrfs_inode *inode, * writeback the sectors with subpage dirty bits, * causing writeback without ordered extent. */ - btrfs_page_clear_dirty(fs_info, page, cur, end + 1 - cur); + btrfs_page_clear_dirty(fs_info, page, cur, len); break; } @@ -1387,7 +1334,7 @@ static noinline_for_stack int __extent_writepage_io(struct btrfs_inode *inode, continue; } - em = btrfs_get_extent(inode, NULL, 0, cur, end - cur + 1); + em = btrfs_get_extent(inode, NULL, 0, cur, len); if (IS_ERR(em)) { ret = PTR_ERR_OR_ZERO(em); goto out_error; @@ -1463,7 +1410,6 @@ static int __extent_writepage(struct page *page, struct btrfs_bio_ctrl *bio_ctrl struct folio *folio = page_folio(page); struct inode *inode = page->mapping->host; const u64 page_start = page_offset(page); - const u64 page_end = page_start + PAGE_SIZE - 1; int ret; int nr = 0; size_t pg_offset; @@ -1507,8 +1453,13 @@ done: set_page_writeback(page); end_page_writeback(page); } - if (ret) - end_extent_writepage(page, ret, page_start, page_end); + if (ret) { + btrfs_mark_ordered_io_finished(BTRFS_I(inode), page, page_start, + PAGE_SIZE, !ret); + btrfs_page_clear_uptodate(btrfs_sb(inode->i_sb), page, + page_start, PAGE_SIZE); + mapping_set_error(page->mapping, ret); + } unlock_page(page); ASSERT(ret <= 0); return ret; @@ -1854,11 +1805,10 @@ static int submit_eb_subpage(struct page *page, struct writeback_control *wbc) * previous call. * Return <0 for fatal error. */ -static int submit_eb_page(struct page *page, struct writeback_control *wbc, - struct extent_buffer **eb_context) +static int submit_eb_page(struct page *page, struct btrfs_eb_write_context *ctx) { + struct writeback_control *wbc = ctx->wbc; struct address_space *mapping = page->mapping; - struct btrfs_block_group *cache = NULL; struct extent_buffer *eb; int ret; @@ -1885,7 +1835,7 @@ static int submit_eb_page(struct page *page, struct writeback_control *wbc, return 0; } - if (eb == *eb_context) { + if (eb == ctx->eb) { spin_unlock(&mapping->private_lock); return 0; } @@ -1894,34 +1844,25 @@ static int submit_eb_page(struct page *page, struct writeback_control *wbc, if (!ret) return 0; - if (!btrfs_check_meta_write_pointer(eb->fs_info, eb, &cache)) { - /* - * If for_sync, this hole will be filled with - * trasnsaction commit. - */ - if (wbc->sync_mode == WB_SYNC_ALL && !wbc->for_sync) - ret = -EAGAIN; - else + ctx->eb = eb; + + ret = btrfs_check_meta_write_pointer(eb->fs_info, ctx); + if (ret) { + if (ret == -EBUSY) ret = 0; free_extent_buffer(eb); return ret; } - *eb_context = eb; - if (!lock_extent_buffer_for_io(eb, wbc)) { - btrfs_revert_meta_write_pointer(cache, eb); - if (cache) - btrfs_put_block_group(cache); free_extent_buffer(eb); return 0; } - if (cache) { - /* - * Implies write in zoned mode. Mark the last eb in a block group. - */ - btrfs_schedule_zone_finish_bg(cache, eb); - btrfs_put_block_group(cache); + /* Implies write in zoned mode. */ + if (ctx->zoned_bg) { + /* Mark the last eb in the block group. */ + btrfs_schedule_zone_finish_bg(ctx->zoned_bg, eb); + ctx->zoned_bg->meta_write_pointer += eb->len; } write_one_eb(eb, wbc); free_extent_buffer(eb); @@ -1931,7 +1872,7 @@ static int submit_eb_page(struct page *page, struct writeback_control *wbc, int btree_write_cache_pages(struct address_space *mapping, struct writeback_control *wbc) { - struct extent_buffer *eb_context = NULL; + struct btrfs_eb_write_context ctx = { .wbc = wbc }; struct btrfs_fs_info *fs_info = BTRFS_I(mapping->host)->root->fs_info; int ret = 0; int done = 0; @@ -1973,7 +1914,7 @@ retry: for (i = 0; i < nr_folios; i++) { struct folio *folio = fbatch.folios[i]; - ret = submit_eb_page(&folio->page, wbc, &eb_context); + ret = submit_eb_page(&folio->page, &ctx); if (ret == 0) continue; if (ret < 0) { @@ -2034,6 +1975,9 @@ retry: ret = 0; if (!ret && BTRFS_FS_ERROR(fs_info)) ret = -EROFS; + + if (ctx.zoned_bg) + btrfs_put_block_group(ctx.zoned_bg); btrfs_zoned_meta_io_unlock(fs_info); return ret; } @@ -2127,7 +2071,7 @@ retry: for (i = 0; i < nr_folios; i++) { struct folio *folio = fbatch.folios[i]; - done_index = folio->index + folio_nr_pages(folio); + done_index = folio_next_index(folio); /* * At this point we hold neither the i_pages lock nor * the page lock: the page may be truncated or @@ -2145,6 +2089,12 @@ retry: continue; } + if (!folio_test_dirty(folio)) { + /* Someone wrote it for us. */ + folio_unlock(folio); + continue; + } + if (wbc->sync_mode != WB_SYNC_NONE) { if (folio_test_writeback(folio)) submit_write_bio(bio_ctrl, 0); @@ -2164,11 +2114,12 @@ retry: } /* - * the filesystem may choose to bump up nr_to_write. + * The filesystem may choose to bump up nr_to_write. * We have to make sure to honor the new nr_to_write - * at any time + * at any time. */ - nr_to_write_done = wbc->nr_to_write <= 0; + nr_to_write_done = (wbc->sync_mode == WB_SYNC_NONE && + wbc->nr_to_write <= 0); } folio_batch_release(&fbatch); cond_resched(); @@ -2203,11 +2154,11 @@ retry: * already been ran (aka, ordered extent inserted) and all pages are still * locked. */ -int extent_write_locked_range(struct inode *inode, u64 start, u64 end, - struct writeback_control *wbc) +void extent_write_locked_range(struct inode *inode, struct page *locked_page, + u64 start, u64 end, struct writeback_control *wbc, + bool pages_dirty) { bool found_error = false; - int first_error = 0; int ret = 0; struct address_space *mapping = inode->i_mapping; struct btrfs_fs_info *fs_info = btrfs_sb(inode->i_sb); @@ -2226,18 +2177,16 @@ int extent_write_locked_range(struct inode *inode, u64 start, u64 end, while (cur <= end) { u64 cur_end = min(round_down(cur, PAGE_SIZE) + PAGE_SIZE - 1, end); + u32 cur_len = cur_end + 1 - cur; struct page *page; int nr = 0; page = find_get_page(mapping, cur >> PAGE_SHIFT); - /* - * All pages in the range are locked since - * btrfs_run_delalloc_range(), thus there is no way to clear - * the page dirty flag. - */ ASSERT(PageLocked(page)); - ASSERT(PageDirty(page)); - clear_page_dirty_for_io(page); + if (pages_dirty && page != locked_page) { + ASSERT(PageDirty(page)); + clear_page_dirty_for_io(page); + } ret = __extent_writepage_io(BTRFS_I(inode), page, &bio_ctrl, i_size, &nr); @@ -2249,23 +2198,21 @@ int extent_write_locked_range(struct inode *inode, u64 start, u64 end, set_page_writeback(page); end_page_writeback(page); } - if (ret) - end_extent_writepage(page, ret, cur, cur_end); - btrfs_page_unlock_writer(fs_info, page, cur, cur_end + 1 - cur); - if (ret < 0) { - found_error = true; - first_error = ret; + if (ret) { + btrfs_mark_ordered_io_finished(BTRFS_I(inode), page, + cur, cur_len, !ret); + btrfs_page_clear_uptodate(fs_info, page, cur, cur_len); + mapping_set_error(page->mapping, ret); } + btrfs_page_unlock_writer(fs_info, page, cur, cur_len); + if (ret < 0) + found_error = true; next_page: put_page(page); cur = cur_end + 1; } submit_write_bio(&bio_ctrl, found_error ? ret : 0); - - if (found_error) - return first_error; - return ret; } int extent_writepages(struct address_space *mapping, @@ -3285,8 +3232,8 @@ struct extent_buffer *btrfs_clone_extent_buffer(const struct extent_buffer *src) return NULL; } WARN_ON(PageDirty(p)); - copy_page(page_address(p), page_address(src->pages[i])); } + copy_extent_buffer_full(new, src); set_extent_buffer_uptodate(new); return new; @@ -3529,6 +3476,7 @@ struct extent_buffer *alloc_extent_buffer(struct btrfs_fs_info *fs_info, struct extent_buffer *exists = NULL; struct page *p; struct address_space *mapping = fs_info->btree_inode->i_mapping; + struct btrfs_subpage *prealloc = NULL; u64 lockdep_owner = owner_root; int uptodate = 1; int ret; @@ -3565,36 +3513,30 @@ struct extent_buffer *alloc_extent_buffer(struct btrfs_fs_info *fs_info, btrfs_set_buffer_lockdep_class(lockdep_owner, eb, level); num_pages = num_extent_pages(eb); - for (i = 0; i < num_pages; i++, index++) { - struct btrfs_subpage *prealloc = NULL; + /* + * Preallocate page->private for subpage case, so that we won't + * allocate memory with private_lock nor page lock hold. + * + * The memory will be freed by attach_extent_buffer_page() or freed + * manually if we exit earlier. + */ + if (fs_info->nodesize < PAGE_SIZE) { + prealloc = btrfs_alloc_subpage(fs_info, BTRFS_SUBPAGE_METADATA); + if (IS_ERR(prealloc)) { + exists = ERR_CAST(prealloc); + goto free_eb; + } + } + + for (i = 0; i < num_pages; i++, index++) { p = find_or_create_page(mapping, index, GFP_NOFS|__GFP_NOFAIL); if (!p) { exists = ERR_PTR(-ENOMEM); + btrfs_free_subpage(prealloc); goto free_eb; } - /* - * Preallocate page->private for subpage case, so that we won't - * allocate memory with private_lock hold. The memory will be - * freed by attach_extent_buffer_page() or freed manually if - * we exit earlier. - * - * Although we have ensured one subpage eb can only have one - * page, but it may change in the future for 16K page size - * support, so we still preallocate the memory in the loop. - */ - if (fs_info->nodesize < PAGE_SIZE) { - prealloc = btrfs_alloc_subpage(fs_info, BTRFS_SUBPAGE_METADATA); - if (IS_ERR(prealloc)) { - ret = PTR_ERR(prealloc); - unlock_page(p); - put_page(p); - exists = ERR_PTR(ret); - goto free_eb; - } - } - spin_lock(&mapping->private_lock); exists = grab_extent_buffer(fs_info, p); if (exists) { @@ -4180,30 +4122,9 @@ static void assert_eb_page_uptodate(const struct extent_buffer *eb, } } -void write_extent_buffer_chunk_tree_uuid(const struct extent_buffer *eb, - const void *srcv) -{ - char *kaddr; - - assert_eb_page_uptodate(eb, eb->pages[0]); - kaddr = page_address(eb->pages[0]) + - get_eb_offset_in_page(eb, offsetof(struct btrfs_header, - chunk_tree_uuid)); - memcpy(kaddr, srcv, BTRFS_FSID_SIZE); -} - -void write_extent_buffer_fsid(const struct extent_buffer *eb, const void *srcv) -{ - char *kaddr; - - assert_eb_page_uptodate(eb, eb->pages[0]); - kaddr = page_address(eb->pages[0]) + - get_eb_offset_in_page(eb, offsetof(struct btrfs_header, fsid)); - memcpy(kaddr, srcv, BTRFS_FSID_SIZE); -} - -void write_extent_buffer(const struct extent_buffer *eb, const void *srcv, - unsigned long start, unsigned long len) +static void __write_extent_buffer(const struct extent_buffer *eb, + const void *srcv, unsigned long start, + unsigned long len, bool use_memmove) { size_t cur; size_t offset; @@ -4211,6 +4132,8 @@ void write_extent_buffer(const struct extent_buffer *eb, const void *srcv, char *kaddr; char *src = (char *)srcv; unsigned long i = get_eb_page_index(start); + /* For unmapped (dummy) ebs, no need to check their uptodate status. */ + const bool check_uptodate = !test_bit(EXTENT_BUFFER_UNMAPPED, &eb->bflags); WARN_ON(test_bit(EXTENT_BUFFER_NO_CHECK, &eb->bflags)); @@ -4221,11 +4144,15 @@ void write_extent_buffer(const struct extent_buffer *eb, const void *srcv, while (len > 0) { page = eb->pages[i]; - assert_eb_page_uptodate(eb, page); + if (check_uptodate) + assert_eb_page_uptodate(eb, page); cur = min(len, PAGE_SIZE - offset); kaddr = page_address(page); - memcpy(kaddr + offset, src, cur); + if (use_memmove) + memmove(kaddr + offset, src, cur); + else + memcpy(kaddr + offset, src, cur); src += cur; len -= cur; @@ -4234,55 +4161,54 @@ void write_extent_buffer(const struct extent_buffer *eb, const void *srcv, } } -void memzero_extent_buffer(const struct extent_buffer *eb, unsigned long start, - unsigned long len) +void write_extent_buffer(const struct extent_buffer *eb, const void *srcv, + unsigned long start, unsigned long len) { - size_t cur; - size_t offset; - struct page *page; - char *kaddr; - unsigned long i = get_eb_page_index(start); + return __write_extent_buffer(eb, srcv, start, len, false); +} - if (check_eb_range(eb, start, len)) - return; +static void memset_extent_buffer(const struct extent_buffer *eb, int c, + unsigned long start, unsigned long len) +{ + unsigned long cur = start; - offset = get_eb_offset_in_page(eb, start); + while (cur < start + len) { + unsigned long index = get_eb_page_index(cur); + unsigned int offset = get_eb_offset_in_page(eb, cur); + unsigned int cur_len = min(start + len - cur, PAGE_SIZE - offset); + struct page *page = eb->pages[index]; - while (len > 0) { - page = eb->pages[i]; assert_eb_page_uptodate(eb, page); + memset(page_address(page) + offset, c, cur_len); - cur = min(len, PAGE_SIZE - offset); - kaddr = page_address(page); - memset(kaddr + offset, 0, cur); - - len -= cur; - offset = 0; - i++; + cur += cur_len; } } +void memzero_extent_buffer(const struct extent_buffer *eb, unsigned long start, + unsigned long len) +{ + if (check_eb_range(eb, start, len)) + return; + return memset_extent_buffer(eb, 0, start, len); +} + void copy_extent_buffer_full(const struct extent_buffer *dst, const struct extent_buffer *src) { - int i; - int num_pages; + unsigned long cur = 0; ASSERT(dst->len == src->len); - if (dst->fs_info->nodesize >= PAGE_SIZE) { - num_pages = num_extent_pages(dst); - for (i = 0; i < num_pages; i++) - copy_page(page_address(dst->pages[i]), - page_address(src->pages[i])); - } else { - size_t src_offset = get_eb_offset_in_page(src, 0); - size_t dst_offset = get_eb_offset_in_page(dst, 0); + while (cur < src->len) { + unsigned long index = get_eb_page_index(cur); + unsigned long offset = get_eb_offset_in_page(src, cur); + unsigned long cur_len = min(src->len, PAGE_SIZE - offset); + void *addr = page_address(src->pages[index]) + offset; + + write_extent_buffer(dst, addr, cur, cur_len); - ASSERT(src->fs_info->nodesize < PAGE_SIZE); - memcpy(page_address(dst->pages[0]) + dst_offset, - page_address(src->pages[0]) + src_offset, - src->len); + cur += cur_len; } } @@ -4376,6 +4302,15 @@ int extent_buffer_test_bit(const struct extent_buffer *eb, unsigned long start, return 1U & (kaddr[offset] >> (nr & (BITS_PER_BYTE - 1))); } +static u8 *extent_buffer_get_byte(const struct extent_buffer *eb, unsigned long bytenr) +{ + unsigned long index = get_eb_page_index(bytenr); + + if (check_eb_range(eb, bytenr, 1)) + return NULL; + return page_address(eb->pages[index]) + get_eb_offset_in_page(eb, bytenr); +} + /* * Set an area of a bitmap to 1. * @@ -4387,35 +4322,28 @@ int extent_buffer_test_bit(const struct extent_buffer *eb, unsigned long start, void extent_buffer_bitmap_set(const struct extent_buffer *eb, unsigned long start, unsigned long pos, unsigned long len) { + unsigned int first_byte = start + BIT_BYTE(pos); + unsigned int last_byte = start + BIT_BYTE(pos + len - 1); + const bool same_byte = (first_byte == last_byte); + u8 mask = BITMAP_FIRST_BYTE_MASK(pos); u8 *kaddr; - struct page *page; - unsigned long i; - size_t offset; - const unsigned int size = pos + len; - int bits_to_set = BITS_PER_BYTE - (pos % BITS_PER_BYTE); - u8 mask_to_set = BITMAP_FIRST_BYTE_MASK(pos); - eb_bitmap_offset(eb, start, pos, &i, &offset); - page = eb->pages[i]; - assert_eb_page_uptodate(eb, page); - kaddr = page_address(page); + if (same_byte) + mask &= BITMAP_LAST_BYTE_MASK(pos + len); - while (len >= bits_to_set) { - kaddr[offset] |= mask_to_set; - len -= bits_to_set; - bits_to_set = BITS_PER_BYTE; - mask_to_set = ~0; - if (++offset >= PAGE_SIZE && len > 0) { - offset = 0; - page = eb->pages[++i]; - assert_eb_page_uptodate(eb, page); - kaddr = page_address(page); - } - } - if (len) { - mask_to_set &= BITMAP_LAST_BYTE_MASK(size); - kaddr[offset] |= mask_to_set; - } + /* Handle the first byte. */ + kaddr = extent_buffer_get_byte(eb, first_byte); + *kaddr |= mask; + if (same_byte) + return; + + /* Handle the byte aligned part. */ + ASSERT(first_byte + 1 <= last_byte); + memset_extent_buffer(eb, 0xff, first_byte + 1, last_byte - first_byte - 1); + + /* Handle the last byte. */ + kaddr = extent_buffer_get_byte(eb, last_byte); + *kaddr |= BITMAP_LAST_BYTE_MASK(pos + len); } @@ -4431,35 +4359,28 @@ void extent_buffer_bitmap_clear(const struct extent_buffer *eb, unsigned long start, unsigned long pos, unsigned long len) { + unsigned int first_byte = start + BIT_BYTE(pos); + unsigned int last_byte = start + BIT_BYTE(pos + len - 1); + const bool same_byte = (first_byte == last_byte); + u8 mask = BITMAP_FIRST_BYTE_MASK(pos); u8 *kaddr; - struct page *page; - unsigned long i; - size_t offset; - const unsigned int size = pos + len; - int bits_to_clear = BITS_PER_BYTE - (pos % BITS_PER_BYTE); - u8 mask_to_clear = BITMAP_FIRST_BYTE_MASK(pos); - eb_bitmap_offset(eb, start, pos, &i, &offset); - page = eb->pages[i]; - assert_eb_page_uptodate(eb, page); - kaddr = page_address(page); + if (same_byte) + mask &= BITMAP_LAST_BYTE_MASK(pos + len); - while (len >= bits_to_clear) { - kaddr[offset] &= ~mask_to_clear; - len -= bits_to_clear; - bits_to_clear = BITS_PER_BYTE; - mask_to_clear = ~0; - if (++offset >= PAGE_SIZE && len > 0) { - offset = 0; - page = eb->pages[++i]; - assert_eb_page_uptodate(eb, page); - kaddr = page_address(page); - } - } - if (len) { - mask_to_clear &= BITMAP_LAST_BYTE_MASK(size); - kaddr[offset] &= ~mask_to_clear; - } + /* Handle the first byte. */ + kaddr = extent_buffer_get_byte(eb, first_byte); + *kaddr &= ~mask; + if (same_byte) + return; + + /* Handle the byte aligned part. */ + ASSERT(first_byte + 1 <= last_byte); + memset_extent_buffer(eb, 0, first_byte + 1, last_byte - first_byte - 1); + + /* Handle the last byte. */ + kaddr = extent_buffer_get_byte(eb, last_byte); + *kaddr &= ~BITMAP_LAST_BYTE_MASK(pos + len); } static inline bool areas_overlap(unsigned long src, unsigned long dst, unsigned long len) @@ -4468,60 +4389,29 @@ static inline bool areas_overlap(unsigned long src, unsigned long dst, unsigned return distance < len; } -static void copy_pages(struct page *dst_page, struct page *src_page, - unsigned long dst_off, unsigned long src_off, - unsigned long len) -{ - char *dst_kaddr = page_address(dst_page); - char *src_kaddr; - int must_memmove = 0; - - if (dst_page != src_page) { - src_kaddr = page_address(src_page); - } else { - src_kaddr = dst_kaddr; - if (areas_overlap(src_off, dst_off, len)) - must_memmove = 1; - } - - if (must_memmove) - memmove(dst_kaddr + dst_off, src_kaddr + src_off, len); - else - memcpy(dst_kaddr + dst_off, src_kaddr + src_off, len); -} - void memcpy_extent_buffer(const struct extent_buffer *dst, unsigned long dst_offset, unsigned long src_offset, unsigned long len) { - size_t cur; - size_t dst_off_in_page; - size_t src_off_in_page; - unsigned long dst_i; - unsigned long src_i; + unsigned long cur_off = 0; if (check_eb_range(dst, dst_offset, len) || check_eb_range(dst, src_offset, len)) return; - while (len > 0) { - dst_off_in_page = get_eb_offset_in_page(dst, dst_offset); - src_off_in_page = get_eb_offset_in_page(dst, src_offset); - - dst_i = get_eb_page_index(dst_offset); - src_i = get_eb_page_index(src_offset); - - cur = min(len, (unsigned long)(PAGE_SIZE - - src_off_in_page)); - cur = min_t(unsigned long, cur, - (unsigned long)(PAGE_SIZE - dst_off_in_page)); - - copy_pages(dst->pages[dst_i], dst->pages[src_i], - dst_off_in_page, src_off_in_page, cur); - - src_offset += cur; - dst_offset += cur; - len -= cur; + while (cur_off < len) { + unsigned long cur_src = cur_off + src_offset; + unsigned long pg_index = get_eb_page_index(cur_src); + unsigned long pg_off = get_eb_offset_in_page(dst, cur_src); + unsigned long cur_len = min(src_offset + len - cur_src, + PAGE_SIZE - pg_off); + void *src_addr = page_address(dst->pages[pg_index]) + pg_off; + const bool use_memmove = areas_overlap(src_offset + cur_off, + dst_offset + cur_off, cur_len); + + __write_extent_buffer(dst, src_addr, dst_offset + cur_off, cur_len, + use_memmove); + cur_off += cur_len; } } @@ -4529,23 +4419,26 @@ void memmove_extent_buffer(const struct extent_buffer *dst, unsigned long dst_offset, unsigned long src_offset, unsigned long len) { - size_t cur; - size_t dst_off_in_page; - size_t src_off_in_page; unsigned long dst_end = dst_offset + len - 1; unsigned long src_end = src_offset + len - 1; - unsigned long dst_i; - unsigned long src_i; if (check_eb_range(dst, dst_offset, len) || check_eb_range(dst, src_offset, len)) return; + if (dst_offset < src_offset) { memcpy_extent_buffer(dst, dst_offset, src_offset, len); return; } + while (len > 0) { - dst_i = get_eb_page_index(dst_end); + unsigned long src_i; + size_t cur; + size_t dst_off_in_page; + size_t src_off_in_page; + void *src_addr; + bool use_memmove; + src_i = get_eb_page_index(src_end); dst_off_in_page = get_eb_offset_in_page(dst, dst_end); @@ -4553,9 +4446,14 @@ void memmove_extent_buffer(const struct extent_buffer *dst, cur = min_t(unsigned long, len, src_off_in_page + 1); cur = min(cur, dst_off_in_page + 1); - copy_pages(dst->pages[dst_i], dst->pages[src_i], - dst_off_in_page - cur + 1, - src_off_in_page - cur + 1, cur); + + src_addr = page_address(dst->pages[src_i]) + src_off_in_page - + cur + 1; + use_memmove = areas_overlap(src_end - cur + 1, dst_end - cur + 1, + cur); + + __write_extent_buffer(dst, src_addr, dst_end - cur + 1, cur, + use_memmove); dst_end -= cur; src_end -= cur; diff --git a/fs/btrfs/extent_io.h b/fs/btrfs/extent_io.h index c5fae3a7d911..68368ba99321 100644 --- a/fs/btrfs/extent_io.h +++ b/fs/btrfs/extent_io.h @@ -40,7 +40,6 @@ enum { ENUM_BIT(PAGE_START_WRITEBACK), ENUM_BIT(PAGE_END_WRITEBACK), ENUM_BIT(PAGE_SET_ORDERED), - ENUM_BIT(PAGE_LOCK), }; /* @@ -94,6 +93,13 @@ struct extent_buffer { #endif }; +struct btrfs_eb_write_context { + struct writeback_control *wbc; + struct extent_buffer *eb; + /* Block group @eb resides in. Only used for zoned mode. */ + struct btrfs_block_group *zoned_bg; +}; + /* * Get the correct offset inside the page of extent buffer. * @@ -178,8 +184,9 @@ int try_release_extent_mapping(struct page *page, gfp_t mask); int try_release_extent_buffer(struct page *page); int btrfs_read_folio(struct file *file, struct folio *folio); -int extent_write_locked_range(struct inode *inode, u64 start, u64 end, - struct writeback_control *wbc); +void extent_write_locked_range(struct inode *inode, struct page *locked_page, + u64 start, u64 end, struct writeback_control *wbc, + bool pages_dirty); int extent_writepages(struct address_space *mapping, struct writeback_control *wbc); int btree_write_cache_pages(struct address_space *mapping, @@ -236,11 +243,24 @@ void read_extent_buffer(const struct extent_buffer *eb, void *dst, int read_extent_buffer_to_user_nofault(const struct extent_buffer *eb, void __user *dst, unsigned long start, unsigned long len); -void write_extent_buffer_fsid(const struct extent_buffer *eb, const void *src); -void write_extent_buffer_chunk_tree_uuid(const struct extent_buffer *eb, - const void *src); void write_extent_buffer(const struct extent_buffer *eb, const void *src, unsigned long start, unsigned long len); + +static inline void write_extent_buffer_chunk_tree_uuid( + const struct extent_buffer *eb, const void *chunk_tree_uuid) +{ + write_extent_buffer(eb, chunk_tree_uuid, + offsetof(struct btrfs_header, chunk_tree_uuid), + BTRFS_FSID_SIZE); +} + +static inline void write_extent_buffer_fsid(const struct extent_buffer *eb, + const void *fsid) +{ + write_extent_buffer(eb, fsid, offsetof(struct btrfs_header, fsid), + BTRFS_FSID_SIZE); +} + void copy_extent_buffer_full(const struct extent_buffer *dst, const struct extent_buffer *src); void copy_extent_buffer(const struct extent_buffer *dst, @@ -266,7 +286,6 @@ void set_extent_buffer_dirty(struct extent_buffer *eb); void set_extent_buffer_uptodate(struct extent_buffer *eb); void clear_extent_buffer_uptodate(struct extent_buffer *eb); void extent_range_clear_dirty_for_io(struct inode *inode, u64 start, u64 end); -void extent_range_redirty_for_io(struct inode *inode, u64 start, u64 end); void extent_clear_unlock_delalloc(struct btrfs_inode *inode, u64 start, u64 end, struct page *locked_page, u32 bits_to_clear, unsigned long page_ops); @@ -277,8 +296,6 @@ void btrfs_clear_buffer_dirty(struct btrfs_trans_handle *trans, int btrfs_alloc_page_array(unsigned int nr_pages, struct page **page_array); -void end_extent_writepage(struct page *page, int err, u64 start, u64 end); - #ifdef CONFIG_BTRFS_FS_RUN_SANITY_TESTS bool find_lock_delalloc_range(struct inode *inode, struct page *locked_page, u64 *start, diff --git a/fs/btrfs/extent_map.c b/fs/btrfs/extent_map.c index 0cdb3e86f29b..a6d8368ed0ed 100644 --- a/fs/btrfs/extent_map.c +++ b/fs/btrfs/extent_map.c @@ -760,8 +760,6 @@ void btrfs_drop_extent_map_range(struct btrfs_inode *inode, u64 start, u64 end, if (skip_pinned && test_bit(EXTENT_FLAG_PINNED, &em->flags)) { start = em_end; - if (end != (u64)-1) - len = start + len - em_end; goto next; } @@ -829,8 +827,8 @@ void btrfs_drop_extent_map_range(struct btrfs_inode *inode, u64 start, u64 end, if (!split) goto remove_em; } - split->start = start + len; - split->len = em_end - (start + len); + split->start = end; + split->len = em_end - end; split->block_start = em->block_start; split->flags = flags; split->compress_type = em->compress_type; diff --git a/fs/btrfs/file-item.c b/fs/btrfs/file-item.c index 696bf695d8eb..1ce5dd154499 100644 --- a/fs/btrfs/file-item.c +++ b/fs/btrfs/file-item.c @@ -597,29 +597,37 @@ fail: * Each bit represents a sector. Thus caller should ensure @csum_buf passed * in is large enough to contain all csums. */ -int btrfs_lookup_csums_bitmap(struct btrfs_root *root, u64 start, u64 end, - u8 *csum_buf, unsigned long *csum_bitmap, - bool search_commit) +int btrfs_lookup_csums_bitmap(struct btrfs_root *root, struct btrfs_path *path, + u64 start, u64 end, u8 *csum_buf, + unsigned long *csum_bitmap) { struct btrfs_fs_info *fs_info = root->fs_info; struct btrfs_key key; - struct btrfs_path *path; struct extent_buffer *leaf; struct btrfs_csum_item *item; const u64 orig_start = start; + bool free_path = false; int ret; ASSERT(IS_ALIGNED(start, fs_info->sectorsize) && IS_ALIGNED(end + 1, fs_info->sectorsize)); - path = btrfs_alloc_path(); - if (!path) - return -ENOMEM; + if (!path) { + path = btrfs_alloc_path(); + if (!path) + return -ENOMEM; + free_path = true; + } - if (search_commit) { - path->skip_locking = 1; - path->reada = READA_FORWARD; - path->search_commit_root = 1; + /* Check if we can reuse the previous path. */ + if (path->nodes[0]) { + btrfs_item_key_to_cpu(path->nodes[0], &key, path->slots[0]); + + if (key.objectid == BTRFS_EXTENT_CSUM_OBJECTID && + key.type == BTRFS_EXTENT_CSUM_KEY && + key.offset <= start) + goto search_forward; + btrfs_release_path(path); } key.objectid = BTRFS_EXTENT_CSUM_OBJECTID; @@ -656,6 +664,7 @@ int btrfs_lookup_csums_bitmap(struct btrfs_root *root, u64 start, u64 end, } } +search_forward: while (start <= end) { u64 csum_end; @@ -712,7 +721,8 @@ int btrfs_lookup_csums_bitmap(struct btrfs_root *root, u64 start, u64 end, } ret = 0; fail: - btrfs_free_path(path); + if (free_path) + btrfs_free_path(path); return ret; } diff --git a/fs/btrfs/file-item.h b/fs/btrfs/file-item.h index 4ec669b69008..04bd2d34efb1 100644 --- a/fs/btrfs/file-item.h +++ b/fs/btrfs/file-item.h @@ -57,9 +57,9 @@ int btrfs_lookup_csums_range(struct btrfs_root *root, u64 start, u64 end, int btrfs_lookup_csums_list(struct btrfs_root *root, u64 start, u64 end, struct list_head *list, int search_commit, bool nowait); -int btrfs_lookup_csums_bitmap(struct btrfs_root *root, u64 start, u64 end, - u8 *csum_buf, unsigned long *csum_bitmap, - bool search_commit); +int btrfs_lookup_csums_bitmap(struct btrfs_root *root, struct btrfs_path *path, + u64 start, u64 end, u8 *csum_buf, + unsigned long *csum_bitmap); void btrfs_extent_item_to_extent_map(struct btrfs_inode *inode, const struct btrfs_path *path, struct btrfs_file_extent_item *fi, diff --git a/fs/btrfs/file.c b/fs/btrfs/file.c index fd03e689a6be..ca46a529d56b 100644 --- a/fs/btrfs/file.c +++ b/fs/btrfs/file.c @@ -876,9 +876,9 @@ static int prepare_uptodate_page(struct inode *inode, return 0; } -static unsigned int get_prepare_fgp_flags(bool nowait) +static fgf_t get_prepare_fgp_flags(bool nowait) { - unsigned int fgp_flags = FGP_LOCK | FGP_ACCESSED | FGP_CREAT; + fgf_t fgp_flags = FGP_LOCK | FGP_ACCESSED | FGP_CREAT; if (nowait) fgp_flags |= FGP_NOWAIT; @@ -910,7 +910,7 @@ static noinline int prepare_pages(struct inode *inode, struct page **pages, int i; unsigned long index = pos >> PAGE_SHIFT; gfp_t mask = get_prepare_gfp_flags(inode, nowait); - unsigned int fgp_flags = get_prepare_fgp_flags(nowait); + fgf_t fgp_flags = get_prepare_fgp_flags(nowait); int err = 0; int faili; @@ -1106,24 +1106,6 @@ void btrfs_check_nocow_unlock(struct btrfs_inode *inode) btrfs_drew_write_unlock(&inode->root->snapshot_lock); } -static void update_time_for_write(struct inode *inode) -{ - struct timespec64 now; - - if (IS_NOCMTIME(inode)) - return; - - now = current_time(inode); - if (!timespec64_equal(&inode->i_mtime, &now)) - inode->i_mtime = now; - - if (!timespec64_equal(&inode->i_ctime, &now)) - inode->i_ctime = now; - - if (IS_I_VERSION(inode)) - inode_inc_iversion(inode); -} - static int btrfs_write_check(struct kiocb *iocb, struct iov_iter *from, size_t count) { @@ -1155,7 +1137,10 @@ static int btrfs_write_check(struct kiocb *iocb, struct iov_iter *from, * need to start yet another transaction to update the inode as we will * update the inode when we finish writing whatever data we write. */ - update_time_for_write(inode); + if (!IS_NOCMTIME(inode)) { + inode->i_mtime = inode_set_ctime_current(inode); + inode_inc_iversion(inode); + } start_pos = round_down(pos, fs_info->sectorsize); oldsize = i_size_read(inode); @@ -2459,10 +2444,8 @@ int btrfs_replace_file_extents(struct btrfs_inode *inode, */ inode_inc_iversion(&inode->vfs_inode); - if (!extent_info || extent_info->update_times) { - inode->vfs_inode.i_mtime = current_time(&inode->vfs_inode); - inode->vfs_inode.i_ctime = inode->vfs_inode.i_mtime; - } + if (!extent_info || extent_info->update_times) + inode->vfs_inode.i_mtime = inode_set_ctime_current(&inode->vfs_inode); ret = btrfs_update_inode(trans, root, inode); if (ret) @@ -2703,8 +2686,7 @@ static int btrfs_punch_hole(struct file *file, loff_t offset, loff_t len) ASSERT(trans != NULL); inode_inc_iversion(inode); - inode->i_mtime = current_time(inode); - inode->i_ctime = inode->i_mtime; + inode->i_mtime = inode_set_ctime_current(inode); ret = btrfs_update_inode(trans, root, BTRFS_I(inode)); updated_inode = true; btrfs_end_transaction(trans); @@ -2721,11 +2703,10 @@ out_only_mutex: * for detecting, at fsync time, if the inode isn't yet in the * log tree or it's there but not up to date. */ - struct timespec64 now = current_time(inode); + struct timespec64 now = inode_set_ctime_current(inode); inode_inc_iversion(inode); inode->i_mtime = now; - inode->i_ctime = now; trans = btrfs_start_transaction(root, 1); if (IS_ERR(trans)) { ret = PTR_ERR(trans); @@ -2796,7 +2777,7 @@ static int btrfs_fallocate_update_isize(struct inode *inode, if (IS_ERR(trans)) return PTR_ERR(trans); - inode->i_ctime = current_time(inode); + inode_set_ctime_current(inode); i_size_write(inode, end); btrfs_inode_safe_disk_i_size_write(BTRFS_I(inode), 0); ret = btrfs_update_inode(trans, root, BTRFS_I(inode)); @@ -3018,7 +2999,7 @@ static long btrfs_fallocate(struct file *file, int mode, struct extent_changeset *data_reserved = NULL; struct falloc_range *range; struct falloc_range *tmp; - struct list_head reserve_list; + LIST_HEAD(reserve_list); u64 cur_offset; u64 last_byte; u64 alloc_start; @@ -3110,7 +3091,6 @@ static long btrfs_fallocate(struct file *file, int mode, btrfs_assert_inode_range_clean(BTRFS_I(inode), alloc_start, locked_end); /* First, check if we exceed the qgroup limit */ - INIT_LIST_HEAD(&reserve_list); while (cur_offset < alloc_end) { em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, cur_offset, alloc_end - cur_offset); diff --git a/fs/btrfs/free-space-cache.c b/fs/btrfs/free-space-cache.c index 880800418075..27fad70451aa 100644 --- a/fs/btrfs/free-space-cache.c +++ b/fs/btrfs/free-space-cache.c @@ -1219,10 +1219,9 @@ static noinline_for_stack int write_pinned_extent_entries( start = block_group->start; while (start < block_group->start + block_group->length) { - ret = find_first_extent_bit(unpin, start, - &extent_start, &extent_end, - EXTENT_DIRTY, NULL); - if (ret) + if (!find_first_extent_bit(unpin, start, + &extent_start, &extent_end, + EXTENT_DIRTY, NULL)) return 0; /* This pinned extent is out of our range */ @@ -2705,13 +2704,8 @@ static int __btrfs_add_free_space_zoned(struct btrfs_block_group *block_group, bg_reclaim_threshold = READ_ONCE(sinfo->bg_reclaim_threshold); spin_lock(&ctl->tree_lock); - /* Count initial region as zone_unusable until it gets activated. */ if (!used) to_free = size; - else if (initial && - test_bit(BTRFS_FS_ACTIVE_ZONE_TRACKING, &block_group->fs_info->flags) && - (block_group->flags & (BTRFS_BLOCK_GROUP_METADATA | BTRFS_BLOCK_GROUP_SYSTEM))) - to_free = 0; else if (initial) to_free = block_group->zone_capacity; else if (offset >= block_group->alloc_offset) @@ -2739,8 +2733,7 @@ static int __btrfs_add_free_space_zoned(struct btrfs_block_group *block_group, reclaimable_unusable = block_group->zone_unusable - (block_group->length - block_group->zone_capacity); /* All the region is now unusable. Mark it as unused and reclaim */ - if (block_group->zone_unusable == block_group->length && - block_group->alloc_offset) { + if (block_group->zone_unusable == block_group->length) { btrfs_mark_bg_unused(block_group); } else if (bg_reclaim_threshold && reclaimable_unusable >= @@ -2944,7 +2937,8 @@ void btrfs_dump_free_space(struct btrfs_block_group *block_group, btrfs_info(fs_info, "block group has cluster?: %s", list_empty(&block_group->cluster_list) ? "no" : "yes"); btrfs_info(fs_info, - "%d blocks of free space at or bigger than bytes is", count); + "%d free space entries at or bigger than %llu bytes", + count, bytes); } void btrfs_init_free_space_ctl(struct btrfs_block_group *block_group, diff --git a/fs/btrfs/free-space-tree.c b/fs/btrfs/free-space-tree.c index f169378e2ca6..c0e734082dcc 100644 --- a/fs/btrfs/free-space-tree.c +++ b/fs/btrfs/free-space-tree.c @@ -1517,8 +1517,10 @@ static int load_free_space_bitmaps(struct btrfs_caching_control *caching_ctl, } else if (prev_bit == 1 && bit == 0) { u64 space_added; - ret = add_new_free_space(block_group, extent_start, - offset, &space_added); + ret = btrfs_add_new_free_space(block_group, + extent_start, + offset, + &space_added); if (ret) goto out; total_found += space_added; @@ -1533,7 +1535,7 @@ static int load_free_space_bitmaps(struct btrfs_caching_control *caching_ctl, } } if (prev_bit == 1) { - ret = add_new_free_space(block_group, extent_start, end, NULL); + ret = btrfs_add_new_free_space(block_group, extent_start, end, NULL); if (ret) goto out; extent_count++; @@ -1590,8 +1592,9 @@ static int load_free_space_extents(struct btrfs_caching_control *caching_ctl, ASSERT(key.type == BTRFS_FREE_SPACE_EXTENT_KEY); ASSERT(key.objectid < end && key.objectid + key.offset <= end); - ret = add_new_free_space(block_group, key.objectid, - key.objectid + key.offset, &space_added); + ret = btrfs_add_new_free_space(block_group, key.objectid, + key.objectid + key.offset, + &space_added); if (ret) goto out; total_found += space_added; diff --git a/fs/btrfs/fs.h b/fs/btrfs/fs.h index 203d2a267828..a523d64d5491 100644 --- a/fs/btrfs/fs.h +++ b/fs/btrfs/fs.h @@ -46,8 +46,6 @@ static_assert(sizeof(struct btrfs_super_block) == BTRFS_SUPER_INFO_SIZE); * Runtime (in-memory) states of filesystem */ enum { - /* Global indicator of serious filesystem errors */ - BTRFS_FS_STATE_ERROR, /* * Filesystem is being remounted, allow to skip some operations, like * defrag @@ -686,6 +684,12 @@ struct btrfs_fs_info { bool qgroup_rescan_running; u8 qgroup_drop_subtree_thres; + /* + * If this is not 0, then it indicates a serious filesystem error has + * happened and it contains that error (negative errno value). + */ + int fs_error; + /* Filesystem state */ unsigned long fs_state; @@ -766,6 +770,9 @@ struct btrfs_fs_info { u64 data_reloc_bg; struct mutex zoned_data_reloc_io_lock; + struct btrfs_block_group *active_meta_bg; + struct btrfs_block_group *active_system_bg; + u64 nr_global_roots; spinlock_t zone_active_bgs_lock; @@ -962,8 +969,8 @@ static inline void btrfs_wake_unfinished_drop(struct btrfs_fs_info *fs_info) clear_and_wake_up_bit(BTRFS_FS_UNFINISHED_DROPS, &fs_info->flags); } -#define BTRFS_FS_ERROR(fs_info) (unlikely(test_bit(BTRFS_FS_STATE_ERROR, \ - &(fs_info)->fs_state))) +#define BTRFS_FS_ERROR(fs_info) (READ_ONCE((fs_info)->fs_error)) + #define BTRFS_FS_LOG_CLEANUP_ERROR(fs_info) \ (unlikely(test_bit(BTRFS_FS_STATE_LOG_CLEANUP_ERROR, \ &(fs_info)->fs_state))) diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c index 49cef61f6a39..f09fbdc43f0f 100644 --- a/fs/btrfs/inode.c +++ b/fs/btrfs/inode.c @@ -124,11 +124,11 @@ static struct kmem_cache *btrfs_inode_cachep; static int btrfs_setsize(struct inode *inode, struct iattr *attr); static int btrfs_truncate(struct btrfs_inode *inode, bool skip_writeback); -static noinline int cow_file_range(struct btrfs_inode *inode, - struct page *locked_page, - u64 start, u64 end, int *page_started, - unsigned long *nr_written, int unlock, - u64 *done_offset); + +static noinline int run_delalloc_cow(struct btrfs_inode *inode, + struct page *locked_page, u64 start, + u64 end, struct writeback_control *wbc, + bool pages_dirty); static struct extent_map *create_io_em(struct btrfs_inode *inode, u64 start, u64 len, u64 orig_start, u64 block_start, u64 block_len, u64 orig_block_len, @@ -423,11 +423,10 @@ static inline void btrfs_cleanup_ordered_extents(struct btrfs_inode *inode, while (index <= end_index) { /* - * For locked page, we will call end_extent_writepage() on it - * in run_delalloc_range() for the error handling. That - * end_extent_writepage() function will call - * btrfs_mark_ordered_io_finished() to clear page Ordered and - * run the ordered extent accounting. + * For locked page, we will call btrfs_mark_ordered_io_finished + * through btrfs_mark_ordered_io_finished() on it + * in run_delalloc_range() for the error handling, which will + * clear page Ordered and run the ordered extent accounting. * * Here we can't just clear the Ordered bit, or * btrfs_mark_ordered_io_finished() would skip the accounting @@ -815,24 +814,22 @@ static inline void inode_should_defrag(struct btrfs_inode *inode, } /* - * we create compressed extents in two phases. The first - * phase compresses a range of pages that have already been - * locked (both pages and state bits are locked). + * Work queue call back to started compression on a file and pages. * - * This is done inside an ordered work queue, and the compression - * is spread across many cpus. The actual IO submission is step - * two, and the ordered work queue takes care of making sure that - * happens in the same order things were put onto the queue by - * writepages and friends. + * This is done inside an ordered work queue, and the compression is spread + * across many cpus. The actual IO submission is step two, and the ordered work + * queue takes care of making sure that happens in the same order things were + * put onto the queue by writepages and friends. * - * If this code finds it can't get good compression, it puts an - * entry onto the work queue to write the uncompressed bytes. This - * makes sure that both compressed inodes and uncompressed inodes - * are written in the same order that the flusher thread sent them - * down. + * If this code finds it can't get good compression, it puts an entry onto the + * work queue to write the uncompressed bytes. This makes sure that both + * compressed inodes and uncompressed inodes are written in the same order that + * the flusher thread sent them down. */ -static noinline int compress_file_range(struct async_chunk *async_chunk) +static void compress_file_range(struct btrfs_work *work) { + struct async_chunk *async_chunk = + container_of(work, struct async_chunk, work); struct btrfs_inode *inode = async_chunk->inode; struct btrfs_fs_info *fs_info = inode->root->fs_info; struct address_space *mapping = inode->vfs_inode.i_mapping; @@ -842,19 +839,24 @@ static noinline int compress_file_range(struct async_chunk *async_chunk) u64 actual_end; u64 i_size; int ret = 0; - struct page **pages = NULL; + struct page **pages; unsigned long nr_pages; unsigned long total_compressed = 0; unsigned long total_in = 0; + unsigned int poff; int i; - int will_compress; int compress_type = fs_info->compress_type; - int compressed_extents = 0; - int redirty = 0; inode_should_defrag(inode, start, end, end - start + 1, SZ_16K); /* + * We need to call clear_page_dirty_for_io on each page in the range. + * Otherwise applications with the file mmap'd can wander in and change + * the page contents while we are compressing them. + */ + extent_range_clear_dirty_for_io(&inode->vfs_inode, start, end); + + /* * We need to save i_size before now because it could change in between * us evaluating the size and assigning it. This is because we lock and * unlock the page in truncate and fallocate, and then modify the i_size @@ -868,7 +870,7 @@ static noinline int compress_file_range(struct async_chunk *async_chunk) barrier(); actual_end = min_t(u64, i_size, end + 1); again: - will_compress = 0; + pages = NULL; nr_pages = (end >> PAGE_SHIFT) - (start >> PAGE_SHIFT) + 1; nr_pages = min_t(unsigned long, nr_pages, BTRFS_MAX_COMPRESSED_PAGES); @@ -912,78 +914,57 @@ again: ret = 0; /* - * we do compression for mount -o compress and when the - * inode has not been flagged as nocompress. This flag can - * change at any time if we discover bad compression ratios. + * We do compression for mount -o compress and when the inode has not + * been flagged as NOCOMPRESS. This flag can change at any time if we + * discover bad compression ratios. */ - if (inode_need_compress(inode, start, end)) { - WARN_ON(pages); - pages = kcalloc(nr_pages, sizeof(struct page *), GFP_NOFS); - if (!pages) { - /* just bail out to the uncompressed code */ - nr_pages = 0; - goto cont; - } - - if (inode->defrag_compress) - compress_type = inode->defrag_compress; - else if (inode->prop_compress) - compress_type = inode->prop_compress; + if (!inode_need_compress(inode, start, end)) + goto cleanup_and_bail_uncompressed; + pages = kcalloc(nr_pages, sizeof(struct page *), GFP_NOFS); + if (!pages) { /* - * we need to call clear_page_dirty_for_io on each - * page in the range. Otherwise applications with the file - * mmap'd can wander in and change the page contents while - * we are compressing them. - * - * If the compression fails for any reason, we set the pages - * dirty again later on. - * - * Note that the remaining part is redirtied, the start pointer - * has moved, the end is the original one. + * Memory allocation failure is not a fatal error, we can fall + * back to uncompressed code. */ - if (!redirty) { - extent_range_clear_dirty_for_io(&inode->vfs_inode, start, end); - redirty = 1; - } + goto cleanup_and_bail_uncompressed; + } - /* Compression level is applied here and only here */ - ret = btrfs_compress_pages( - compress_type | (fs_info->compress_level << 4), - mapping, start, - pages, - &nr_pages, - &total_in, - &total_compressed); + if (inode->defrag_compress) + compress_type = inode->defrag_compress; + else if (inode->prop_compress) + compress_type = inode->prop_compress; + + /* Compression level is applied here. */ + ret = btrfs_compress_pages(compress_type | (fs_info->compress_level << 4), + mapping, start, pages, &nr_pages, &total_in, + &total_compressed); + if (ret) + goto mark_incompressible; - if (!ret) { - unsigned long offset = offset_in_page(total_compressed); - struct page *page = pages[nr_pages - 1]; + /* + * Zero the tail end of the last page, as we might be sending it down + * to disk. + */ + poff = offset_in_page(total_compressed); + if (poff) + memzero_page(pages[nr_pages - 1], poff, PAGE_SIZE - poff); - /* zero the tail end of the last page, we might be - * sending it down to disk - */ - if (offset) - memzero_page(page, offset, PAGE_SIZE - offset); - will_compress = 1; - } - } -cont: /* + * Try to create an inline extent. + * + * If we didn't compress the entire range, try to create an uncompressed + * inline extent, else a compressed one. + * * Check cow_file_range() for why we don't even try to create inline - * extent for subpage case. + * extent for the subpage case. */ if (start == 0 && fs_info->sectorsize == PAGE_SIZE) { - /* lets try to make an inline extent */ - if (ret || total_in < actual_end) { - /* we didn't compress the entire range, try - * to make an uncompressed inline extent. - */ - ret = cow_file_range_inline(inode, actual_end, - 0, BTRFS_COMPRESS_NONE, - NULL, false); + if (total_in < actual_end) { + ret = cow_file_range_inline(inode, actual_end, 0, + BTRFS_COMPRESS_NONE, NULL, + false); } else { - /* try making a compressed inline extent */ ret = cow_file_range_inline(inode, actual_end, total_compressed, compress_type, pages, @@ -1013,99 +994,52 @@ cont: PAGE_UNLOCK | PAGE_START_WRITEBACK | PAGE_END_WRITEBACK); - - /* - * Ensure we only free the compressed pages if we have - * them allocated, as we can still reach here with - * inode_need_compress() == false. - */ - if (pages) { - for (i = 0; i < nr_pages; i++) { - WARN_ON(pages[i]->mapping); - put_page(pages[i]); - } - kfree(pages); - } - return 0; + goto free_pages; } } - if (will_compress) { - /* - * we aren't doing an inline extent round the compressed size - * up to a block size boundary so the allocator does sane - * things - */ - total_compressed = ALIGN(total_compressed, blocksize); + /* + * We aren't doing an inline extent. Round the compressed size up to a + * block size boundary so the allocator does sane things. + */ + total_compressed = ALIGN(total_compressed, blocksize); - /* - * one last check to make sure the compression is really a - * win, compare the page count read with the blocks on disk, - * compression must free at least one sector size - */ - total_in = round_up(total_in, fs_info->sectorsize); - if (total_compressed + blocksize <= total_in) { - compressed_extents++; + /* + * One last check to make sure the compression is really a win, compare + * the page count read with the blocks on disk, compression must free at + * least one sector. + */ + total_in = round_up(total_in, fs_info->sectorsize); + if (total_compressed + blocksize > total_in) + goto mark_incompressible; - /* - * The async work queues will take care of doing actual - * allocation on disk for these compressed pages, and - * will submit them to the elevator. - */ - add_async_extent(async_chunk, start, total_in, - total_compressed, pages, nr_pages, - compress_type); - - if (start + total_in < end) { - start += total_in; - pages = NULL; - cond_resched(); - goto again; - } - return compressed_extents; - } + /* + * The async work queues will take care of doing actual allocation on + * disk for these compressed pages, and will submit the bios. + */ + add_async_extent(async_chunk, start, total_in, total_compressed, pages, + nr_pages, compress_type); + if (start + total_in < end) { + start += total_in; + cond_resched(); + goto again; } + return; + +mark_incompressible: + if (!btrfs_test_opt(fs_info, FORCE_COMPRESS) && !inode->prop_compress) + inode->flags |= BTRFS_INODE_NOCOMPRESS; +cleanup_and_bail_uncompressed: + add_async_extent(async_chunk, start, end - start + 1, 0, NULL, 0, + BTRFS_COMPRESS_NONE); +free_pages: if (pages) { - /* - * the compression code ran but failed to make things smaller, - * free any pages it allocated and our page pointer array - */ for (i = 0; i < nr_pages; i++) { WARN_ON(pages[i]->mapping); put_page(pages[i]); } kfree(pages); - pages = NULL; - total_compressed = 0; - nr_pages = 0; - - /* flag the file so we don't compress in the future */ - if (!btrfs_test_opt(fs_info, FORCE_COMPRESS) && - !(inode->prop_compress)) { - inode->flags |= BTRFS_INODE_NOCOMPRESS; - } } -cleanup_and_bail_uncompressed: - /* - * No compression, but we still need to write the pages in the file - * we've been given so far. redirty the locked page if it corresponds - * to our extent and set things up for the async work queue to run - * cow_file_range to do the normal delalloc dance. - */ - if (async_chunk->locked_page && - (page_offset(async_chunk->locked_page) >= start && - page_offset(async_chunk->locked_page)) <= end) { - __set_page_dirty_nobuffers(async_chunk->locked_page); - /* unlocked later on in the async handlers */ - } - - if (redirty) - extent_range_redirty_for_io(&inode->vfs_inode, start, end); - add_async_extent(async_chunk, start, end - start + 1, 0, NULL, 0, - BTRFS_COMPRESS_NONE); - compressed_extents++; - - return compressed_extents; } static void free_async_extent_pages(struct async_extent *async_extent) @@ -1124,14 +1058,12 @@ static void free_async_extent_pages(struct async_extent *async_extent) async_extent->pages = NULL; } -static int submit_uncompressed_range(struct btrfs_inode *inode, - struct async_extent *async_extent, - struct page *locked_page) +static void submit_uncompressed_range(struct btrfs_inode *inode, + struct async_extent *async_extent, + struct page *locked_page) { u64 start = async_extent->start; u64 end = async_extent->start + async_extent->ram_size - 1; - unsigned long nr_written = 0; - int page_started = 0; int ret; struct writeback_control wbc = { .sync_mode = WB_SYNC_ALL, @@ -1140,45 +1072,33 @@ static int submit_uncompressed_range(struct btrfs_inode *inode, .no_cgroup_owner = 1, }; - /* - * Call cow_file_range() to run the delalloc range directly, since we - * won't go to NOCOW or async path again. - * - * Also we call cow_file_range() with @unlock_page == 0, so that we - * can directly submit them without interruption. - */ - ret = cow_file_range(inode, locked_page, start, end, &page_started, - &nr_written, 0, NULL); - /* Inline extent inserted, page gets unlocked and everything is done */ - if (page_started) - return 0; - + wbc_attach_fdatawrite_inode(&wbc, &inode->vfs_inode); + ret = run_delalloc_cow(inode, locked_page, start, end, &wbc, false); + wbc_detach_inode(&wbc); if (ret < 0) { btrfs_cleanup_ordered_extents(inode, locked_page, start, end - start + 1); if (locked_page) { const u64 page_start = page_offset(locked_page); - const u64 page_end = page_start + PAGE_SIZE - 1; set_page_writeback(locked_page); end_page_writeback(locked_page); - end_extent_writepage(locked_page, ret, page_start, page_end); + btrfs_mark_ordered_io_finished(inode, locked_page, + page_start, PAGE_SIZE, + !ret); + btrfs_page_clear_uptodate(inode->root->fs_info, + locked_page, page_start, + PAGE_SIZE); + mapping_set_error(locked_page->mapping, ret); unlock_page(locked_page); } - return ret; } - - /* All pages will be unlocked, including @locked_page */ - wbc_attach_fdatawrite_inode(&wbc, &inode->vfs_inode); - ret = extent_write_locked_range(&inode->vfs_inode, start, end, &wbc); - wbc_detach_inode(&wbc); - return ret; } -static int submit_one_async_extent(struct btrfs_inode *inode, - struct async_chunk *async_chunk, - struct async_extent *async_extent, - u64 *alloc_hint) +static void submit_one_async_extent(struct async_chunk *async_chunk, + struct async_extent *async_extent, + u64 *alloc_hint) { + struct btrfs_inode *inode = async_chunk->inode; struct extent_io_tree *io_tree = &inode->io_tree; struct btrfs_root *root = inode->root; struct btrfs_fs_info *fs_info = root->fs_info; @@ -1206,9 +1126,8 @@ static int submit_one_async_extent(struct btrfs_inode *inode, } lock_extent(io_tree, start, end, NULL); - /* We have fall back to uncompressed write */ - if (!async_extent->pages) { - ret = submit_uncompressed_range(inode, async_extent, locked_page); + if (async_extent->compress_type == BTRFS_COMPRESS_NONE) { + submit_uncompressed_range(inode, async_extent, locked_page); goto done; } @@ -1217,7 +1136,6 @@ static int submit_one_async_extent(struct btrfs_inode *inode, async_extent->compressed_size, 0, *alloc_hint, &ins, 1, 1); if (ret) { - free_async_extent_pages(async_extent); /* * Here we used to try again by going back to non-compressed * path for ENOSPC. But we can't reserve space even for @@ -1272,7 +1190,7 @@ done: if (async_chunk->blkcg_css) kthread_associate_blkcg(NULL); kfree(async_extent); - return ret; + return; out_free_reserve: btrfs_dec_block_group_reservations(fs_info, ins.objectid); @@ -1286,39 +1204,13 @@ out_free: PAGE_UNLOCK | PAGE_START_WRITEBACK | PAGE_END_WRITEBACK); free_async_extent_pages(async_extent); - goto done; -} - -/* - * Phase two of compressed writeback. This is the ordered portion of the code, - * which only gets called in the order the work was queued. We walk all the - * async extents created by compress_file_range and send them down to the disk. - */ -static noinline void submit_compressed_extents(struct async_chunk *async_chunk) -{ - struct btrfs_inode *inode = async_chunk->inode; - struct btrfs_fs_info *fs_info = inode->root->fs_info; - struct async_extent *async_extent; - u64 alloc_hint = 0; - int ret = 0; - - while (!list_empty(&async_chunk->extents)) { - u64 extent_start; - u64 ram_size; - - async_extent = list_entry(async_chunk->extents.next, - struct async_extent, list); - list_del(&async_extent->list); - extent_start = async_extent->start; - ram_size = async_extent->ram_size; - - ret = submit_one_async_extent(inode, async_chunk, async_extent, - &alloc_hint); - btrfs_debug(fs_info, + if (async_chunk->blkcg_css) + kthread_associate_blkcg(NULL); + btrfs_debug(fs_info, "async extent submission failed root=%lld inode=%llu start=%llu len=%llu ret=%d", - inode->root->root_key.objectid, - btrfs_ino(inode), extent_start, ram_size, ret); - } + root->root_key.objectid, btrfs_ino(inode), start, + async_extent->ram_size, ret); + kfree(async_extent); } static u64 get_extent_allocation_hint(struct btrfs_inode *inode, u64 start, @@ -1362,25 +1254,18 @@ static u64 get_extent_allocation_hint(struct btrfs_inode *inode, u64 start, * locked_page is the page that writepage had locked already. We use * it to make sure we don't do extra locks or unlocks. * - * *page_started is set to one if we unlock locked_page and do everything - * required to start IO on it. It may be clean and already done with - * IO when we return. - * - * When unlock == 1, we unlock the pages in successfully allocated regions. - * When unlock == 0, we leave them locked for writing them out. + * When this function fails, it unlocks all pages except @locked_page. * - * However, we unlock all the pages except @locked_page in case of failure. + * When this function successfully creates an inline extent, it returns 1 and + * unlocks all pages including locked_page and starts I/O on them. + * (In reality inline extents are limited to a single page, so locked_page is + * the only page handled anyway). * - * In summary, page locking state will be as follow: + * When this function succeed and creates a normal extent, the page locking + * status depends on the passed in flags: * - * - page_started == 1 (return value) - * - All the pages are unlocked. IO is started. - * - Note that this can happen only on success - * - unlock == 1 - * - All the pages except @locked_page are unlocked in any case - * - unlock == 0 - * - On success, all the pages are locked for writing out them - * - On failure, all the pages except @locked_page are unlocked + * - If @keep_locked is set, all pages are kept locked. + * - Else all pages except for @locked_page are unlocked. * * When a failure happens in the second or later iteration of the * while-loop, the ordered extents created in previous iterations are kept @@ -1389,10 +1274,9 @@ static u64 get_extent_allocation_hint(struct btrfs_inode *inode, u64 start, * example. */ static noinline int cow_file_range(struct btrfs_inode *inode, - struct page *locked_page, - u64 start, u64 end, int *page_started, - unsigned long *nr_written, int unlock, - u64 *done_offset) + struct page *locked_page, u64 start, u64 end, + u64 *done_offset, + bool keep_locked, bool no_inline) { struct btrfs_root *root = inode->root; struct btrfs_fs_info *fs_info = root->fs_info; @@ -1431,7 +1315,7 @@ static noinline int cow_file_range(struct btrfs_inode *inode, * This means we can trigger inline extent even if we didn't want to. * So here we skip inline extent creation completely. */ - if (start == 0 && fs_info->sectorsize == PAGE_SIZE) { + if (start == 0 && fs_info->sectorsize == PAGE_SIZE && !no_inline) { u64 actual_end = min_t(u64, i_size_read(&inode->vfs_inode), end + 1); @@ -1451,9 +1335,6 @@ static noinline int cow_file_range(struct btrfs_inode *inode, EXTENT_DELALLOC_NEW | EXTENT_DEFRAG | EXTENT_DO_ACCOUNTING, PAGE_UNLOCK | PAGE_START_WRITEBACK | PAGE_END_WRITEBACK); - *nr_written = *nr_written + - (end - start + PAGE_SIZE) / PAGE_SIZE; - *page_started = 1; /* * locked_page is locked by the caller of * writepage_delalloc(), not locked by @@ -1463,11 +1344,12 @@ static noinline int cow_file_range(struct btrfs_inode *inode, * as it doesn't have any subpage::writers recorded. * * Here we manually unlock the page, since the caller - * can't use page_started to determine if it's an - * inline extent or a compressed extent. + * can't determine if it's an inline extent or a + * compressed extent. */ unlock_page(locked_page); - goto out; + ret = 1; + goto done; } else if (ret < 0) { goto out_unlock; } @@ -1498,6 +1380,31 @@ static noinline int cow_file_range(struct btrfs_inode *inode, ret = btrfs_reserve_extent(root, cur_alloc_size, cur_alloc_size, min_alloc_size, 0, alloc_hint, &ins, 1, 1); + if (ret == -EAGAIN) { + /* + * btrfs_reserve_extent only returns -EAGAIN for zoned + * file systems, which is an indication that there are + * no active zones to allocate from at the moment. + * + * If this is the first loop iteration, wait for at + * least one zone to finish before retrying the + * allocation. Otherwise ask the caller to write out + * the already allocated blocks before coming back to + * us, or return -ENOSPC if it can't handle retries. + */ + ASSERT(btrfs_is_zoned(fs_info)); + if (start == orig_start) { + wait_on_bit_io(&inode->root->fs_info->flags, + BTRFS_FS_NEED_ZONE_FINISH, + TASK_UNINTERRUPTIBLE); + continue; + } + if (done_offset) { + *done_offset = start - 1; + return 0; + } + ret = -ENOSPC; + } if (ret < 0) goto out_unlock; cur_alloc_size = ins.offset; @@ -1558,7 +1465,7 @@ static noinline int cow_file_range(struct btrfs_inode *inode, * Do set the Ordered (Private2) bit so we know this page was * properly setup for writepage. */ - page_ops = unlock ? PAGE_UNLOCK : 0; + page_ops = (keep_locked ? 0 : PAGE_UNLOCK); page_ops |= PAGE_SET_ORDERED; extent_clear_unlock_delalloc(inode, start, start + ram_size - 1, @@ -1581,7 +1488,9 @@ static noinline int cow_file_range(struct btrfs_inode *inode, if (ret) goto out_unlock; } -out: +done: + if (done_offset) + *done_offset = end; return ret; out_drop_extent_cache: @@ -1591,21 +1500,6 @@ out_reserve: btrfs_free_reserved_extent(fs_info, ins.objectid, ins.offset, 1); out_unlock: /* - * If done_offset is non-NULL and ret == -EAGAIN, we expect the - * caller to write out the successfully allocated region and retry. - */ - if (done_offset && ret == -EAGAIN) { - if (orig_start < start) - *done_offset = start - 1; - else - *done_offset = start; - return ret; - } else if (ret == -EAGAIN) { - /* Convert to -ENOSPC since the caller cannot retry. */ - ret = -ENOSPC; - } - - /* * Now, we have three regions to clean up: * * |-------(1)----|---(2)---|-------------(3)----------| @@ -1627,10 +1521,10 @@ out_unlock: * EXTENT_DEFRAG | EXTENT_CLEAR_META_RESV are handled by the cleanup * function. * - * However, in case of unlock == 0, we still need to unlock the pages + * However, in case of @keep_locked, we still need to unlock the pages * (except @locked_page) to ensure all the pages are unlocked. */ - if (!unlock && orig_start < start) { + if (keep_locked && orig_start < start) { if (!locked_page) mapping_set_error(inode->vfs_inode.i_mapping, ret); extent_clear_unlock_delalloc(inode, orig_start, start - 1, @@ -1654,8 +1548,6 @@ out_unlock: clear_bits, page_ops); start += cur_alloc_size; - if (start >= end) - return ret; } /* @@ -1664,50 +1556,37 @@ out_unlock: * space_info's bytes_may_use counter, reserved in * btrfs_check_data_free_space(). */ - extent_clear_unlock_delalloc(inode, start, end, locked_page, - clear_bits | EXTENT_CLEAR_DATA_RESV, - page_ops); - return ret; -} - -/* - * work queue call back to started compression on a file and pages - */ -static noinline void async_cow_start(struct btrfs_work *work) -{ - struct async_chunk *async_chunk; - int compressed_extents; - - async_chunk = container_of(work, struct async_chunk, work); - - compressed_extents = compress_file_range(async_chunk); - if (compressed_extents == 0) { - btrfs_add_delayed_iput(async_chunk->inode); - async_chunk->inode = NULL; + if (start < end) { + clear_bits |= EXTENT_CLEAR_DATA_RESV; + extent_clear_unlock_delalloc(inode, start, end, locked_page, + clear_bits, page_ops); } + return ret; } /* - * work queue call back to submit previously compressed pages + * Phase two of compressed writeback. This is the ordered portion of the code, + * which only gets called in the order the work was queued. We walk all the + * async extents created by compress_file_range and send them down to the disk. */ -static noinline void async_cow_submit(struct btrfs_work *work) +static noinline void submit_compressed_extents(struct btrfs_work *work) { struct async_chunk *async_chunk = container_of(work, struct async_chunk, work); struct btrfs_fs_info *fs_info = btrfs_work_owner(work); + struct async_extent *async_extent; unsigned long nr_pages; + u64 alloc_hint = 0; nr_pages = (async_chunk->end - async_chunk->start + PAGE_SIZE) >> PAGE_SHIFT; - /* - * ->inode could be NULL if async_chunk_start has failed to compress, - * in which case we don't have anything to submit, yet we need to - * always adjust ->async_delalloc_pages as its paired with the init - * happening in run_delalloc_compressed - */ - if (async_chunk->inode) - submit_compressed_extents(async_chunk); + while (!list_empty(&async_chunk->extents)) { + async_extent = list_entry(async_chunk->extents.next, + struct async_extent, list); + list_del(&async_extent->list); + submit_one_async_extent(async_chunk, async_extent, &alloc_hint); + } /* atomic_sub_return implies a barrier */ if (atomic_sub_return(nr_pages, &fs_info->async_delalloc_pages) < @@ -1721,8 +1600,7 @@ static noinline void async_cow_free(struct btrfs_work *work) struct async_cow *async_cow; async_chunk = container_of(work, struct async_chunk, work); - if (async_chunk->inode) - btrfs_add_delayed_iput(async_chunk->inode); + btrfs_add_delayed_iput(async_chunk->inode); if (async_chunk->blkcg_css) css_put(async_chunk->blkcg_css); @@ -1732,10 +1610,8 @@ static noinline void async_cow_free(struct btrfs_work *work) } static bool run_delalloc_compressed(struct btrfs_inode *inode, - struct writeback_control *wbc, - struct page *locked_page, - u64 start, u64 end, int *page_started, - unsigned long *nr_written) + struct page *locked_page, u64 start, + u64 end, struct writeback_control *wbc) { struct btrfs_fs_info *fs_info = inode->root->fs_info; struct cgroup_subsys_state *blkcg_css = wbc_blkcg_css(wbc); @@ -1809,65 +1685,42 @@ static bool run_delalloc_compressed(struct btrfs_inode *inode, async_chunk[i].blkcg_css = NULL; } - btrfs_init_work(&async_chunk[i].work, async_cow_start, - async_cow_submit, async_cow_free); + btrfs_init_work(&async_chunk[i].work, compress_file_range, + submit_compressed_extents, async_cow_free); nr_pages = DIV_ROUND_UP(cur_end - start, PAGE_SIZE); atomic_add(nr_pages, &fs_info->async_delalloc_pages); btrfs_queue_work(fs_info->delalloc_workers, &async_chunk[i].work); - *nr_written += nr_pages; start = cur_end + 1; } - *page_started = 1; return true; } -static noinline int run_delalloc_zoned(struct btrfs_inode *inode, - struct page *locked_page, u64 start, - u64 end, int *page_started, - unsigned long *nr_written, - struct writeback_control *wbc) +/* + * Run the delalloc range from start to end, and write back any dirty pages + * covered by the range. + */ +static noinline int run_delalloc_cow(struct btrfs_inode *inode, + struct page *locked_page, u64 start, + u64 end, struct writeback_control *wbc, + bool pages_dirty) { u64 done_offset = end; int ret; - bool locked_page_done = false; while (start <= end) { - ret = cow_file_range(inode, locked_page, start, end, page_started, - nr_written, 0, &done_offset); - if (ret && ret != -EAGAIN) + ret = cow_file_range(inode, locked_page, start, end, &done_offset, + true, false); + if (ret) return ret; - - if (*page_started) { - ASSERT(ret == 0); - return 0; - } - - if (ret == 0) - done_offset = end; - - if (done_offset == start) { - wait_on_bit_io(&inode->root->fs_info->flags, - BTRFS_FS_NEED_ZONE_FINISH, - TASK_UNINTERRUPTIBLE); - continue; - } - - if (!locked_page_done) { - __set_page_dirty_nobuffers(locked_page); - account_page_redirty(locked_page); - } - locked_page_done = true; - extent_write_locked_range(&inode->vfs_inode, start, done_offset, - wbc); + extent_write_locked_range(&inode->vfs_inode, locked_page, start, + done_offset, wbc, pages_dirty); start = done_offset + 1; } - *page_started = 1; - - return 0; + return 1; } static noinline int csum_exist_in_range(struct btrfs_fs_info *fs_info, @@ -1894,8 +1747,7 @@ static noinline int csum_exist_in_range(struct btrfs_fs_info *fs_info, } static int fallback_to_cow(struct btrfs_inode *inode, struct page *locked_page, - const u64 start, const u64 end, - int *page_started, unsigned long *nr_written) + const u64 start, const u64 end) { const bool is_space_ino = btrfs_is_free_space_inode(inode); const bool is_reloc_ino = btrfs_is_data_reloc_root(inode->root); @@ -1903,6 +1755,7 @@ static int fallback_to_cow(struct btrfs_inode *inode, struct page *locked_page, struct extent_io_tree *io_tree = &inode->io_tree; u64 range_start = start; u64 count; + int ret; /* * If EXTENT_NORESERVE is set it means that when the buffered write was @@ -1955,8 +1808,14 @@ static int fallback_to_cow(struct btrfs_inode *inode, struct page *locked_page, NULL); } - return cow_file_range(inode, locked_page, start, end, page_started, - nr_written, 1, NULL); + /* + * Don't try to create inline extents, as a mix of inline extent that + * is written out and unlocked directly and a normal NOCOW extent + * doesn't work. + */ + ret = cow_file_range(inode, locked_page, start, end, NULL, false, true); + ASSERT(ret != 1); + return ret; } struct can_nocow_file_extent_args { @@ -2105,9 +1964,7 @@ static int can_nocow_file_extent(struct btrfs_path *path, */ static noinline int run_delalloc_nocow(struct btrfs_inode *inode, struct page *locked_page, - const u64 start, const u64 end, - int *page_started, - unsigned long *nr_written) + const u64 start, const u64 end) { struct btrfs_fs_info *fs_info = inode->root->fs_info; struct btrfs_root *root = inode->root; @@ -2117,25 +1974,26 @@ static noinline int run_delalloc_nocow(struct btrfs_inode *inode, int ret; bool check_prev = true; u64 ino = btrfs_ino(inode); - struct btrfs_block_group *bg; - bool nocow = false; struct can_nocow_file_extent_args nocow_args = { 0 }; + /* + * Normally on a zoned device we're only doing COW writes, but in case + * of relocation on a zoned filesystem serializes I/O so that we're only + * writing sequentially and can end up here as well. + */ + ASSERT(!btrfs_is_zoned(fs_info) || btrfs_is_data_reloc_root(root)); + path = btrfs_alloc_path(); if (!path) { - extent_clear_unlock_delalloc(inode, start, end, locked_page, - EXTENT_LOCKED | EXTENT_DELALLOC | - EXTENT_DO_ACCOUNTING | - EXTENT_DEFRAG, PAGE_UNLOCK | - PAGE_START_WRITEBACK | - PAGE_END_WRITEBACK); - return -ENOMEM; + ret = -ENOMEM; + goto error; } nocow_args.end = end; nocow_args.writeback_path = true; while (1) { + struct btrfs_block_group *nocow_bg = NULL; struct btrfs_ordered_extent *ordered; struct btrfs_key found_key; struct btrfs_file_extent_item *fi; @@ -2146,8 +2004,6 @@ static noinline int run_delalloc_nocow(struct btrfs_inode *inode, int extent_type; bool is_prealloc; - nocow = false; - ret = btrfs_lookup_file_extent(NULL, root, path, ino, cur_offset, 0); if (ret < 0) @@ -2172,11 +2028,8 @@ next_slot: leaf = path->nodes[0]; if (path->slots[0] >= btrfs_header_nritems(leaf)) { ret = btrfs_next_leaf(root, path); - if (ret < 0) { - if (cow_start != (u64)-1) - cur_offset = cow_start; + if (ret < 0) goto error; - } if (ret > 0) break; leaf = path->nodes[0]; @@ -2209,7 +2062,7 @@ next_slot: if (found_key.offset > cur_offset) { extent_end = found_key.offset; extent_type = 0; - goto out_check; + goto must_cow; } /* @@ -2239,24 +2092,22 @@ next_slot: nocow_args.start = cur_offset; ret = can_nocow_file_extent(path, &found_key, inode, &nocow_args); - if (ret < 0) { - if (cow_start != (u64)-1) - cur_offset = cow_start; + if (ret < 0) goto error; - } else if (ret == 0) { - goto out_check; - } + if (ret == 0) + goto must_cow; ret = 0; - bg = btrfs_inc_nocow_writers(fs_info, nocow_args.disk_bytenr); - if (bg) - nocow = true; -out_check: - /* - * If nocow is false then record the beginning of the range - * that needs to be COWed - */ - if (!nocow) { + nocow_bg = btrfs_inc_nocow_writers(fs_info, nocow_args.disk_bytenr); + if (!nocow_bg) { +must_cow: + /* + * If we can't perform NOCOW writeback for the range, + * then record the beginning of the range that needs to + * be COWed. It will be written out before the next + * NOCOW range if we find one, or when exiting this + * loop. + */ if (cow_start == (u64)-1) cow_start = cur_offset; cur_offset = extent_end; @@ -2275,11 +2126,12 @@ out_check: */ if (cow_start != (u64)-1) { ret = fallback_to_cow(inode, locked_page, - cow_start, found_key.offset - 1, - page_started, nr_written); - if (ret) - goto error; + cow_start, found_key.offset - 1); cow_start = (u64)-1; + if (ret) { + btrfs_dec_nocow_writers(nocow_bg); + goto error; + } } nocow_end = cur_offset + nocow_args.num_bytes - 1; @@ -2296,6 +2148,7 @@ out_check: ram_bytes, BTRFS_COMPRESS_NONE, BTRFS_ORDERED_PREALLOC); if (IS_ERR(em)) { + btrfs_dec_nocow_writers(nocow_bg); ret = PTR_ERR(em); goto error; } @@ -2309,6 +2162,7 @@ out_check: ? (1 << BTRFS_ORDERED_PREALLOC) : (1 << BTRFS_ORDERED_NOCOW), BTRFS_COMPRESS_NONE); + btrfs_dec_nocow_writers(nocow_bg); if (IS_ERR(ordered)) { if (is_prealloc) { btrfs_drop_extent_map_range(inode, cur_offset, @@ -2318,11 +2172,6 @@ out_check: goto error; } - if (nocow) { - btrfs_dec_nocow_writers(bg); - nocow = false; - } - if (btrfs_is_data_reloc_root(root)) /* * Error handled later, as we must prevent @@ -2357,17 +2206,24 @@ out_check: if (cow_start != (u64)-1) { cur_offset = end; - ret = fallback_to_cow(inode, locked_page, cow_start, end, - page_started, nr_written); + ret = fallback_to_cow(inode, locked_page, cow_start, end); + cow_start = (u64)-1; if (ret) goto error; } -error: - if (nocow) - btrfs_dec_nocow_writers(bg); + btrfs_free_path(path); + return 0; - if (ret && cur_offset < end) +error: + /* + * If an error happened while a COW region is outstanding, cur_offset + * needs to be reset to cow_start to ensure the COW region is unlocked + * as well. + */ + if (cow_start != (u64)-1) + cur_offset = cow_start; + if (cur_offset < end) extent_clear_unlock_delalloc(inode, cur_offset, end, locked_page, EXTENT_LOCKED | EXTENT_DELALLOC | EXTENT_DEFRAG | @@ -2395,49 +2251,37 @@ static bool should_nocow(struct btrfs_inode *inode, u64 start, u64 end) * being touched for the first time. */ int btrfs_run_delalloc_range(struct btrfs_inode *inode, struct page *locked_page, - u64 start, u64 end, int *page_started, unsigned long *nr_written, - struct writeback_control *wbc) + u64 start, u64 end, struct writeback_control *wbc) { - int ret = 0; const bool zoned = btrfs_is_zoned(inode->root->fs_info); + int ret; /* - * The range must cover part of the @locked_page, or the returned - * @page_started can confuse the caller. + * The range must cover part of the @locked_page, or a return of 1 + * can confuse the caller. */ ASSERT(!(end <= page_offset(locked_page) || start >= page_offset(locked_page) + PAGE_SIZE)); if (should_nocow(inode, start, end)) { - /* - * Normally on a zoned device we're only doing COW writes, but - * in case of relocation on a zoned filesystem we have taken - * precaution, that we're only writing sequentially. It's safe - * to use run_delalloc_nocow() here, like for regular - * preallocated inodes. - */ - ASSERT(!zoned || btrfs_is_data_reloc_root(inode->root)); - ret = run_delalloc_nocow(inode, locked_page, start, end, - page_started, nr_written); + ret = run_delalloc_nocow(inode, locked_page, start, end); goto out; } if (btrfs_inode_can_compress(inode) && inode_need_compress(inode, start, end) && - run_delalloc_compressed(inode, wbc, locked_page, start, - end, page_started, nr_written)) - goto out; + run_delalloc_compressed(inode, locked_page, start, end, wbc)) + return 1; if (zoned) - ret = run_delalloc_zoned(inode, locked_page, start, end, - page_started, nr_written, wbc); + ret = run_delalloc_cow(inode, locked_page, start, end, wbc, + true); else - ret = cow_file_range(inode, locked_page, start, end, - page_started, nr_written, 1, NULL); + ret = cow_file_range(inode, locked_page, start, end, NULL, + false, false); out: - ASSERT(ret <= 0); - if (ret) + if (ret < 0) btrfs_cleanup_ordered_extents(inode, locked_page, start, end - start + 1); return ret; @@ -2840,23 +2684,19 @@ struct btrfs_writepage_fixup { static void btrfs_writepage_fixup_worker(struct btrfs_work *work) { - struct btrfs_writepage_fixup *fixup; + struct btrfs_writepage_fixup *fixup = + container_of(work, struct btrfs_writepage_fixup, work); struct btrfs_ordered_extent *ordered; struct extent_state *cached_state = NULL; struct extent_changeset *data_reserved = NULL; - struct page *page; - struct btrfs_inode *inode; - u64 page_start; - u64 page_end; + struct page *page = fixup->page; + struct btrfs_inode *inode = fixup->inode; + struct btrfs_fs_info *fs_info = inode->root->fs_info; + u64 page_start = page_offset(page); + u64 page_end = page_offset(page) + PAGE_SIZE - 1; int ret = 0; bool free_delalloc_space = true; - fixup = container_of(work, struct btrfs_writepage_fixup, work); - page = fixup->page; - inode = fixup->inode; - page_start = page_offset(page); - page_end = page_offset(page) + PAGE_SIZE - 1; - /* * This is similar to page_mkwrite, we need to reserve the space before * we take the page lock. @@ -2949,10 +2789,12 @@ out_page: * to reflect the errors and clean the page. */ mapping_set_error(page->mapping, ret); - end_extent_writepage(page, ret, page_start, page_end); + btrfs_mark_ordered_io_finished(inode, page, page_start, + PAGE_SIZE, !ret); + btrfs_page_clear_uptodate(fs_info, page, page_start, PAGE_SIZE); clear_page_dirty_for_io(page); } - btrfs_page_clear_checked(inode->root->fs_info, page, page_start, PAGE_SIZE); + btrfs_page_clear_checked(fs_info, page, page_start, PAGE_SIZE); unlock_page(page); put_page(page); kfree(fixup); @@ -3359,6 +3201,13 @@ out: btrfs_free_reserved_extent(fs_info, ordered_extent->disk_bytenr, ordered_extent->disk_num_bytes, 1); + /* + * Actually free the qgroup rsv which was released when + * the ordered extent was created. + */ + btrfs_qgroup_free_refroot(fs_info, inode->root->root_key.objectid, + ordered_extent->qgroup_rsv, + BTRFS_QGROUP_RSV_DATA); } } @@ -3384,15 +3233,6 @@ int btrfs_finish_ordered_io(struct btrfs_ordered_extent *ordered) return btrfs_finish_one_ordered(ordered); } -void btrfs_writepage_endio_finish_ordered(struct btrfs_inode *inode, - struct page *page, u64 start, - u64 end, bool uptodate) -{ - trace_btrfs_writepage_end_io_hook(inode, start, end, uptodate); - - btrfs_mark_ordered_io_finished(inode, page, start, end + 1 - start, uptodate); -} - /* * Verify the checksum for a single sector without any extra action that depend * on the type of I/O. @@ -3662,9 +3502,16 @@ int btrfs_orphan_cleanup(struct btrfs_root *root) */ if (found_key.offset == last_objectid) { + /* + * We found the same inode as before. This means we were + * not able to remove its items via eviction triggered + * by an iput(). A transaction abort may have happened, + * due to -ENOSPC for example, so try to grab the error + * that lead to a transaction abort, if any. + */ btrfs_err(fs_info, "Error removing orphan entry, stopping orphan cleanup"); - ret = -EINVAL; + ret = BTRFS_FS_ERROR(fs_info) ?: -EINVAL; goto out; } @@ -3917,8 +3764,8 @@ static int btrfs_read_locked_inode(struct inode *inode, inode->i_mtime.tv_sec = btrfs_timespec_sec(leaf, &inode_item->mtime); inode->i_mtime.tv_nsec = btrfs_timespec_nsec(leaf, &inode_item->mtime); - inode->i_ctime.tv_sec = btrfs_timespec_sec(leaf, &inode_item->ctime); - inode->i_ctime.tv_nsec = btrfs_timespec_nsec(leaf, &inode_item->ctime); + inode_set_ctime(inode, btrfs_timespec_sec(leaf, &inode_item->ctime), + btrfs_timespec_nsec(leaf, &inode_item->ctime)); BTRFS_I(inode)->i_otime.tv_sec = btrfs_timespec_sec(leaf, &inode_item->otime); @@ -4089,9 +3936,9 @@ static void fill_inode_item(struct btrfs_trans_handle *trans, inode->i_mtime.tv_nsec); btrfs_set_token_timespec_sec(&token, &item->ctime, - inode->i_ctime.tv_sec); + inode_get_ctime(inode).tv_sec); btrfs_set_token_timespec_nsec(&token, &item->ctime, - inode->i_ctime.tv_nsec); + inode_get_ctime(inode).tv_nsec); btrfs_set_token_timespec_sec(&token, &item->otime, BTRFS_I(inode)->i_otime.tv_sec); @@ -4289,9 +4136,8 @@ err: btrfs_i_size_write(dir, dir->vfs_inode.i_size - name->len * 2); inode_inc_iversion(&inode->vfs_inode); inode_inc_iversion(&dir->vfs_inode); - inode->vfs_inode.i_ctime = current_time(&inode->vfs_inode); - dir->vfs_inode.i_mtime = inode->vfs_inode.i_ctime; - dir->vfs_inode.i_ctime = inode->vfs_inode.i_ctime; + inode_set_ctime_current(&inode->vfs_inode); + dir->vfs_inode.i_mtime = inode_set_ctime_current(&dir->vfs_inode); ret = btrfs_update_inode(trans, root, dir); out: return ret; @@ -4464,8 +4310,7 @@ static int btrfs_unlink_subvol(struct btrfs_trans_handle *trans, btrfs_i_size_write(dir, dir->vfs_inode.i_size - fname.disk_name.len * 2); inode_inc_iversion(&dir->vfs_inode); - dir->vfs_inode.i_mtime = current_time(&dir->vfs_inode); - dir->vfs_inode.i_ctime = dir->vfs_inode.i_mtime; + dir->vfs_inode.i_mtime = inode_set_ctime_current(&dir->vfs_inode); ret = btrfs_update_inode_fallback(trans, root, dir); if (ret) btrfs_abort_transaction(trans, ret); @@ -5115,8 +4960,7 @@ static int btrfs_setsize(struct inode *inode, struct iattr *attr) if (newsize != oldsize) { inode_inc_iversion(inode); if (!(mask & (ATTR_CTIME | ATTR_MTIME))) { - inode->i_mtime = current_time(inode); - inode->i_ctime = inode->i_mtime; + inode->i_mtime = inode_set_ctime_current(inode); } } @@ -5738,11 +5582,11 @@ struct inode *btrfs_iget(struct super_block *s, u64 ino, struct btrfs_root *root return btrfs_iget_path(s, ino, root, NULL); } -static struct inode *new_simple_dir(struct super_block *s, +static struct inode *new_simple_dir(struct inode *dir, struct btrfs_key *key, struct btrfs_root *root) { - struct inode *inode = new_inode(s); + struct inode *inode = new_inode(dir->i_sb); if (!inode) return ERR_PTR(-ENOMEM); @@ -5760,10 +5604,11 @@ static struct inode *new_simple_dir(struct super_block *s, inode->i_opflags &= ~IOP_XATTR; inode->i_fop = &simple_dir_operations; inode->i_mode = S_IFDIR | S_IRUGO | S_IWUSR | S_IXUGO; - inode->i_mtime = current_time(inode); - inode->i_atime = inode->i_mtime; - inode->i_ctime = inode->i_mtime; + inode->i_mtime = inode_set_ctime_current(inode); + inode->i_atime = dir->i_atime; BTRFS_I(inode)->i_otime = inode->i_mtime; + inode->i_uid = dir->i_uid; + inode->i_gid = dir->i_gid; return inode; } @@ -5822,7 +5667,7 @@ struct inode *btrfs_lookup_dentry(struct inode *dir, struct dentry *dentry) if (ret != -ENOENT) inode = ERR_PTR(ret); else - inode = new_simple_dir(dir->i_sb, &location, root); + inode = new_simple_dir(dir, &location, root); } else { inode = btrfs_iget(dir->i_sb, location.objectid, sub_root); btrfs_put_root(sub_root); @@ -5873,6 +5718,74 @@ static struct dentry *btrfs_lookup(struct inode *dir, struct dentry *dentry, } /* + * Find the highest existing sequence number in a directory and then set the + * in-memory index_cnt variable to the first free sequence number. + */ +static int btrfs_set_inode_index_count(struct btrfs_inode *inode) +{ + struct btrfs_root *root = inode->root; + struct btrfs_key key, found_key; + struct btrfs_path *path; + struct extent_buffer *leaf; + int ret; + + key.objectid = btrfs_ino(inode); + key.type = BTRFS_DIR_INDEX_KEY; + key.offset = (u64)-1; + + path = btrfs_alloc_path(); + if (!path) + return -ENOMEM; + + ret = btrfs_search_slot(NULL, root, &key, path, 0, 0); + if (ret < 0) + goto out; + /* FIXME: we should be able to handle this */ + if (ret == 0) + goto out; + ret = 0; + + if (path->slots[0] == 0) { + inode->index_cnt = BTRFS_DIR_START_INDEX; + goto out; + } + + path->slots[0]--; + + leaf = path->nodes[0]; + btrfs_item_key_to_cpu(leaf, &found_key, path->slots[0]); + + if (found_key.objectid != btrfs_ino(inode) || + found_key.type != BTRFS_DIR_INDEX_KEY) { + inode->index_cnt = BTRFS_DIR_START_INDEX; + goto out; + } + + inode->index_cnt = found_key.offset + 1; +out: + btrfs_free_path(path); + return ret; +} + +static int btrfs_get_dir_last_index(struct btrfs_inode *dir, u64 *index) +{ + if (dir->index_cnt == (u64)-1) { + int ret; + + ret = btrfs_inode_delayed_dir_index_count(dir); + if (ret) { + ret = btrfs_set_inode_index_count(dir); + if (ret) + return ret; + } + } + + *index = dir->index_cnt; + + return 0; +} + +/* * All this infrastructure exists because dir_emit can fault, and we are holding * the tree lock when doing readdir. For now just allocate a buffer and copy * our information into that, and then dir_emit from the buffer. This is @@ -5884,10 +5797,17 @@ static struct dentry *btrfs_lookup(struct inode *dir, struct dentry *dentry, static int btrfs_opendir(struct inode *inode, struct file *file) { struct btrfs_file_private *private; + u64 last_index; + int ret; + + ret = btrfs_get_dir_last_index(BTRFS_I(inode), &last_index); + if (ret) + return ret; private = kzalloc(sizeof(struct btrfs_file_private), GFP_KERNEL); if (!private) return -ENOMEM; + private->last_index = last_index; private->filldir_buf = kzalloc(PAGE_SIZE, GFP_KERNEL); if (!private->filldir_buf) { kfree(private); @@ -5932,8 +5852,8 @@ static int btrfs_real_readdir(struct file *file, struct dir_context *ctx) struct btrfs_key found_key; struct btrfs_path *path; void *addr; - struct list_head ins_list; - struct list_head del_list; + LIST_HEAD(ins_list); + LIST_HEAD(del_list); int ret; char *name_ptr; int name_len; @@ -5952,9 +5872,8 @@ static int btrfs_real_readdir(struct file *file, struct dir_context *ctx) addr = private->filldir_buf; path->reada = READA_FORWARD; - INIT_LIST_HEAD(&ins_list); - INIT_LIST_HEAD(&del_list); - put = btrfs_readdir_get_delayed_items(inode, &ins_list, &del_list); + put = btrfs_readdir_get_delayed_items(inode, private->last_index, + &ins_list, &del_list); again: key.type = BTRFS_DIR_INDEX_KEY; @@ -5972,6 +5891,8 @@ again: break; if (found_key.offset < ctx->pos) continue; + if (found_key.offset > private->last_index) + break; if (btrfs_should_delete_dir_index(&del_list, found_key.offset)) continue; di = btrfs_item_ptr(leaf, path->slots[0], struct btrfs_dir_item); @@ -6087,8 +6008,7 @@ static int btrfs_dirty_inode(struct btrfs_inode *inode) * This is a copy of file_update_time. We need this so we can return error on * ENOSPC for updating the inode in the case of file write and mmap writes. */ -static int btrfs_update_time(struct inode *inode, struct timespec64 *now, - int flags) +static int btrfs_update_time(struct inode *inode, int flags) { struct btrfs_root *root = BTRFS_I(inode)->root; bool dirty = flags & ~S_VERSION; @@ -6096,69 +6016,11 @@ static int btrfs_update_time(struct inode *inode, struct timespec64 *now, if (btrfs_root_readonly(root)) return -EROFS; - if (flags & S_VERSION) - dirty |= inode_maybe_inc_iversion(inode, dirty); - if (flags & S_CTIME) - inode->i_ctime = *now; - if (flags & S_MTIME) - inode->i_mtime = *now; - if (flags & S_ATIME) - inode->i_atime = *now; + dirty = inode_update_timestamps(inode, flags); return dirty ? btrfs_dirty_inode(BTRFS_I(inode)) : 0; } /* - * find the highest existing sequence number in a directory - * and then set the in-memory index_cnt variable to reflect - * free sequence numbers - */ -static int btrfs_set_inode_index_count(struct btrfs_inode *inode) -{ - struct btrfs_root *root = inode->root; - struct btrfs_key key, found_key; - struct btrfs_path *path; - struct extent_buffer *leaf; - int ret; - - key.objectid = btrfs_ino(inode); - key.type = BTRFS_DIR_INDEX_KEY; - key.offset = (u64)-1; - - path = btrfs_alloc_path(); - if (!path) - return -ENOMEM; - - ret = btrfs_search_slot(NULL, root, &key, path, 0, 0); - if (ret < 0) - goto out; - /* FIXME: we should be able to handle this */ - if (ret == 0) - goto out; - ret = 0; - - if (path->slots[0] == 0) { - inode->index_cnt = BTRFS_DIR_START_INDEX; - goto out; - } - - path->slots[0]--; - - leaf = path->nodes[0]; - btrfs_item_key_to_cpu(leaf, &found_key, path->slots[0]); - - if (found_key.objectid != btrfs_ino(inode) || - found_key.type != BTRFS_DIR_INDEX_KEY) { - inode->index_cnt = BTRFS_DIR_START_INDEX; - goto out; - } - - inode->index_cnt = found_key.offset + 1; -out: - btrfs_free_path(path); - return ret; -} - -/* * helper to find a free sequence number in a given directory. This current * code is very simple, later versions will do smarter things in the btree */ @@ -6402,9 +6264,8 @@ int btrfs_create_new_inode(struct btrfs_trans_handle *trans, goto discard; } - inode->i_mtime = current_time(inode); + inode->i_mtime = inode_set_ctime_current(inode); inode->i_atime = inode->i_mtime; - inode->i_ctime = inode->i_mtime; BTRFS_I(inode)->i_otime = inode->i_mtime; /* @@ -6569,12 +6430,10 @@ int btrfs_add_link(struct btrfs_trans_handle *trans, * log replay procedure is responsible for setting them to their correct * values (the ones it had when the fsync was done). */ - if (!test_bit(BTRFS_FS_LOG_RECOVERING, &root->fs_info->flags)) { - struct timespec64 now = current_time(&parent_inode->vfs_inode); + if (!test_bit(BTRFS_FS_LOG_RECOVERING, &root->fs_info->flags)) + parent_inode->vfs_inode.i_mtime = + inode_set_ctime_current(&parent_inode->vfs_inode); - parent_inode->vfs_inode.i_mtime = now; - parent_inode->vfs_inode.i_ctime = now; - } ret = btrfs_update_inode(trans, root, parent_inode); if (ret) btrfs_abort_transaction(trans, ret); @@ -6714,7 +6573,7 @@ static int btrfs_link(struct dentry *old_dentry, struct inode *dir, BTRFS_I(inode)->dir_index = 0ULL; inc_nlink(inode); inode_inc_iversion(inode); - inode->i_ctime = current_time(inode); + inode_set_ctime_current(inode); ihold(inode); set_bit(BTRFS_INODE_COPY_EVERYTHING, &BTRFS_I(inode)->runtime_flags); @@ -8780,7 +8639,7 @@ static int btrfs_getattr(struct mnt_idmap *idmap, STATX_ATTR_IMMUTABLE | STATX_ATTR_NODUMP); - generic_fillattr(idmap, inode, stat); + generic_fillattr(idmap, request_mask, inode, stat); stat->dev = BTRFS_I(inode)->root->anon_dev; spin_lock(&BTRFS_I(inode)->lock); @@ -8804,7 +8663,6 @@ static int btrfs_rename_exchange(struct inode *old_dir, struct btrfs_root *dest = BTRFS_I(new_dir)->root; struct inode *new_inode = new_dentry->d_inode; struct inode *old_inode = old_dentry->d_inode; - struct timespec64 ctime = current_time(old_inode); struct btrfs_rename_ctx old_rename_ctx; struct btrfs_rename_ctx new_rename_ctx; u64 old_ino = btrfs_ino(BTRFS_I(old_inode)); @@ -8935,12 +8793,7 @@ static int btrfs_rename_exchange(struct inode *old_dir, inode_inc_iversion(new_dir); inode_inc_iversion(old_inode); inode_inc_iversion(new_inode); - old_dir->i_mtime = ctime; - old_dir->i_ctime = ctime; - new_dir->i_mtime = ctime; - new_dir->i_ctime = ctime; - old_inode->i_ctime = ctime; - new_inode->i_ctime = ctime; + simple_rename_timestamp(old_dir, old_dentry, new_dir, new_dentry); if (old_dentry->d_parent != new_dentry->d_parent) { btrfs_record_unlink_dir(trans, BTRFS_I(old_dir), @@ -9204,11 +9057,7 @@ static int btrfs_rename(struct mnt_idmap *idmap, inode_inc_iversion(old_dir); inode_inc_iversion(new_dir); inode_inc_iversion(old_inode); - old_dir->i_mtime = current_time(old_dir); - old_dir->i_ctime = old_dir->i_mtime; - new_dir->i_mtime = old_dir->i_mtime; - new_dir->i_ctime = old_dir->i_mtime; - old_inode->i_ctime = old_dir->i_mtime; + simple_rename_timestamp(old_dir, old_dentry, new_dir, new_dentry); if (old_dentry->d_parent != new_dentry->d_parent) btrfs_record_unlink_dir(trans, BTRFS_I(old_dir), @@ -9230,7 +9079,6 @@ static int btrfs_rename(struct mnt_idmap *idmap, if (new_inode) { inode_inc_iversion(new_inode); - new_inode->i_ctime = current_time(new_inode); if (unlikely(btrfs_ino(BTRFS_I(new_inode)) == BTRFS_EMPTY_SUBVOL_DIR_OBJECTID)) { ret = btrfs_unlink_subvol(trans, BTRFS_I(new_dir), new_dentry); @@ -9363,14 +9211,11 @@ static int start_delalloc_inodes(struct btrfs_root *root, struct btrfs_inode *binode; struct inode *inode; struct btrfs_delalloc_work *work, *next; - struct list_head works; - struct list_head splice; + LIST_HEAD(works); + LIST_HEAD(splice); int ret = 0; bool full_flush = wbc->nr_to_write == LONG_MAX; - INIT_LIST_HEAD(&works); - INIT_LIST_HEAD(&splice); - mutex_lock(&root->delalloc_mutex); spin_lock(&root->delalloc_lock); list_splice_init(&root->delalloc_inodes, &splice); @@ -9458,14 +9303,12 @@ int btrfs_start_delalloc_roots(struct btrfs_fs_info *fs_info, long nr, .range_end = LLONG_MAX, }; struct btrfs_root *root; - struct list_head splice; + LIST_HEAD(splice); int ret; if (BTRFS_FS_ERROR(fs_info)) return -EROFS; - INIT_LIST_HEAD(&splice); - mutex_lock(&fs_info->delalloc_root_mutex); spin_lock(&fs_info->delalloc_root_lock); list_splice_init(&fs_info->delalloc_roots, &splice); @@ -9770,7 +9613,7 @@ next: *alloc_hint = ins.objectid + ins.offset; inode_inc_iversion(inode); - inode->i_ctime = current_time(inode); + inode_set_ctime_current(inode); BTRFS_I(inode)->flags |= BTRFS_INODE_PREALLOC; if (!(mode & FALLOC_FL_KEEP_SIZE) && (actual_len > inode->i_size) && diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c index a895d105464b..a18ee7b5a166 100644 --- a/fs/btrfs/ioctl.c +++ b/fs/btrfs/ioctl.c @@ -384,7 +384,7 @@ update_flags: binode->flags = binode_flags; btrfs_sync_inode_flags_to_i_flags(inode); inode_inc_iversion(inode); - inode->i_ctime = current_time(inode); + inode_set_ctime_current(inode); ret = btrfs_update_inode(trans, root, BTRFS_I(inode)); out_end_trans: diff --git a/fs/btrfs/messages.c b/fs/btrfs/messages.c index 23fc11af498a..7695decc7243 100644 --- a/fs/btrfs/messages.c +++ b/fs/btrfs/messages.c @@ -10,14 +10,13 @@ #ifdef CONFIG_PRINTK #define STATE_STRING_PREFACE ": state " -#define STATE_STRING_BUF_LEN (sizeof(STATE_STRING_PREFACE) + BTRFS_FS_STATE_COUNT) +#define STATE_STRING_BUF_LEN (sizeof(STATE_STRING_PREFACE) + BTRFS_FS_STATE_COUNT + 1) /* * Characters to print to indicate error conditions or uncommon filesystem state. * RO is not an error. */ static const char fs_state_chars[] = { - [BTRFS_FS_STATE_ERROR] = 'E', [BTRFS_FS_STATE_REMOUNTING] = 'M', [BTRFS_FS_STATE_RO] = 0, [BTRFS_FS_STATE_TRANS_ABORTED] = 'A', @@ -37,6 +36,11 @@ static void btrfs_state_to_string(const struct btrfs_fs_info *info, char *buf) memcpy(curr, STATE_STRING_PREFACE, sizeof(STATE_STRING_PREFACE)); curr += sizeof(STATE_STRING_PREFACE) - 1; + if (BTRFS_FS_ERROR(info)) { + *curr++ = 'E'; + states_printed = true; + } + for_each_set_bit(bit, &fs_state, sizeof(fs_state)) { WARN_ON_ONCE(bit >= BTRFS_FS_STATE_COUNT); if ((bit < BTRFS_FS_STATE_COUNT) && fs_state_chars[bit]) { @@ -155,7 +159,7 @@ void __btrfs_handle_fs_error(struct btrfs_fs_info *fs_info, const char *function * Today we only save the error info to memory. Long term we'll also * send it down to the disk. */ - set_bit(BTRFS_FS_STATE_ERROR, &fs_info->fs_state); + WRITE_ONCE(fs_info->fs_error, errno); /* Don't go through full error handling during mount. */ if (!(sb->s_flags & SB_BORN)) @@ -252,12 +256,6 @@ void __cold _btrfs_printk(const struct btrfs_fs_info *fs_info, const char *fmt, } #endif -void __cold btrfs_print_v0_err(struct btrfs_fs_info *fs_info) -{ - btrfs_err(fs_info, -"Unsupported V0 extent filesystem detected. Aborting. Please re-create your filesystem with a newer kernel"); -} - #if BITS_PER_LONG == 32 void __cold btrfs_warn_32bit_limit(struct btrfs_fs_info *fs_info) { diff --git a/fs/btrfs/messages.h b/fs/btrfs/messages.h index deedc1a168e2..1ae6f8e23e07 100644 --- a/fs/btrfs/messages.h +++ b/fs/btrfs/messages.h @@ -181,8 +181,6 @@ do { \ #define ASSERT(expr) (void)(expr) #endif -void __cold btrfs_print_v0_err(struct btrfs_fs_info *fs_info); - __printf(5, 6) __cold void __btrfs_handle_fs_error(struct btrfs_fs_info *fs_info, const char *function, diff --git a/fs/btrfs/ordered-data.c b/fs/btrfs/ordered-data.c index a629532283bc..b46ab348e8e5 100644 --- a/fs/btrfs/ordered-data.c +++ b/fs/btrfs/ordered-data.c @@ -410,6 +410,10 @@ void btrfs_mark_ordered_io_finished(struct btrfs_inode *inode, unsigned long flags; u64 cur = file_offset; + trace_btrfs_writepage_end_io_hook(inode, file_offset, + file_offset + num_bytes - 1, + uptodate); + spin_lock_irqsave(&tree->lock, flags); while (cur < file_offset + num_bytes) { u64 entry_end; @@ -736,11 +740,9 @@ void btrfs_wait_ordered_roots(struct btrfs_fs_info *fs_info, u64 nr, const u64 range_start, const u64 range_len) { struct btrfs_root *root; - struct list_head splice; + LIST_HEAD(splice); u64 done; - INIT_LIST_HEAD(&splice); - mutex_lock(&fs_info->ordered_operations_mutex); spin_lock(&fs_info->ordered_root_lock); list_splice_init(&fs_info->ordered_roots, &splice); diff --git a/fs/btrfs/print-tree.c b/fs/btrfs/print-tree.c index aa06d9ca911d..0c93439e929f 100644 --- a/fs/btrfs/print-tree.c +++ b/fs/btrfs/print-tree.c @@ -95,8 +95,10 @@ static void print_extent_item(const struct extent_buffer *eb, int slot, int type int ref_index = 0; if (unlikely(item_size < sizeof(*ei))) { - btrfs_print_v0_err(eb->fs_info); - btrfs_handle_fs_error(eb->fs_info, -EINVAL, NULL); + btrfs_err(eb->fs_info, + "unexpected extent item size, has %u expect >= %zu", + item_size, sizeof(*ei)); + btrfs_handle_fs_error(eb->fs_info, -EUCLEAN, NULL); } ei = btrfs_item_ptr(eb, slot, struct btrfs_extent_item); @@ -291,10 +293,6 @@ void btrfs_print_leaf(const struct extent_buffer *l) btrfs_file_extent_num_bytes(l, fi), btrfs_file_extent_ram_bytes(l, fi)); break; - case BTRFS_EXTENT_REF_V0_KEY: - btrfs_print_v0_err(fs_info); - btrfs_handle_fs_error(fs_info, -EINVAL, NULL); - break; case BTRFS_BLOCK_GROUP_ITEM_KEY: bi = btrfs_item_ptr(l, i, struct btrfs_block_group_item); diff --git a/fs/btrfs/qgroup.c b/fs/btrfs/qgroup.c index 2637d6b157ff..b99230db3c82 100644 --- a/fs/btrfs/qgroup.c +++ b/fs/btrfs/qgroup.c @@ -3590,15 +3590,16 @@ btrfs_qgroup_rescan(struct btrfs_fs_info *fs_info) * going to clear all tracking information for a clean start. */ - trans = btrfs_join_transaction(fs_info->fs_root); - if (IS_ERR(trans)) { + trans = btrfs_attach_transaction_barrier(fs_info->fs_root); + if (IS_ERR(trans) && trans != ERR_PTR(-ENOENT)) { fs_info->qgroup_flags &= ~BTRFS_QGROUP_STATUS_FLAG_RESCAN; return PTR_ERR(trans); - } - ret = btrfs_commit_transaction(trans); - if (ret) { - fs_info->qgroup_flags &= ~BTRFS_QGROUP_STATUS_FLAG_RESCAN; - return ret; + } else if (trans != ERR_PTR(-ENOENT)) { + ret = btrfs_commit_transaction(trans); + if (ret) { + fs_info->qgroup_flags &= ~BTRFS_QGROUP_STATUS_FLAG_RESCAN; + return ret; + } } qgroup_rescan_zero_tracking(fs_info); @@ -3757,9 +3758,11 @@ static int try_flush_qgroup(struct btrfs_root *root) goto out; btrfs_wait_ordered_extents(root, U64_MAX, 0, (u64)-1); - trans = btrfs_join_transaction(root); + trans = btrfs_attach_transaction_barrier(root); if (IS_ERR(trans)) { ret = PTR_ERR(trans); + if (ret == -ENOENT) + ret = 0; goto out; } diff --git a/fs/btrfs/raid56.c b/fs/btrfs/raid56.c index 0249ea52bb80..3e014b9370a3 100644 --- a/fs/btrfs/raid56.c +++ b/fs/btrfs/raid56.c @@ -584,8 +584,7 @@ static int rbio_can_merge(struct btrfs_raid_bio *last, if (last->operation == BTRFS_RBIO_PARITY_SCRUB) return 0; - if (last->operation == BTRFS_RBIO_REBUILD_MISSING || - last->operation == BTRFS_RBIO_READ_REBUILD) + if (last->operation == BTRFS_RBIO_READ_REBUILD) return 0; return 1; @@ -784,10 +783,7 @@ static noinline void unlock_stripe(struct btrfs_raid_bio *rbio) spin_unlock(&rbio->bio_list_lock); spin_unlock(&h->lock); - if (next->operation == BTRFS_RBIO_READ_REBUILD) - start_async_work(next, recover_rbio_work_locked); - else if (next->operation == BTRFS_RBIO_REBUILD_MISSING) { - steal_rbio(rbio, next); + if (next->operation == BTRFS_RBIO_READ_REBUILD) { start_async_work(next, recover_rbio_work_locked); } else if (next->operation == BTRFS_RBIO_WRITE) { steal_rbio(rbio, next); @@ -1517,11 +1513,11 @@ static void submit_read_wait_bio_list(struct btrfs_raid_bio *rbio, while ((bio = bio_list_pop(bio_list))) { bio->bi_end_io = raid_wait_read_end_io; - if (trace_raid56_scrub_read_recover_enabled()) { + if (trace_raid56_read_enabled()) { struct raid56_bio_trace_info trace_info = { 0 }; bio_get_trace_info(rbio, bio, &trace_info); - trace_raid56_scrub_read_recover(rbio, bio, &trace_info); + trace_raid56_read(rbio, bio, &trace_info); } submit_bio(bio); } @@ -1698,8 +1694,7 @@ static int verify_one_sector(struct btrfs_raid_bio *rbio, * If we're rebuilding a read, we have to use pages from the * bio list if possible. */ - if ((rbio->operation == BTRFS_RBIO_READ_REBUILD || - rbio->operation == BTRFS_RBIO_REBUILD_MISSING)) { + if (rbio->operation == BTRFS_RBIO_READ_REBUILD) { sector = sector_in_rbio(rbio, stripe_nr, sector_nr, 0); } else { sector = rbio_stripe_sector(rbio, stripe_nr, sector_nr); @@ -1763,8 +1758,7 @@ static int recover_vertical(struct btrfs_raid_bio *rbio, int sector_nr, * If we're rebuilding a read, we have to use pages from the * bio list if possible. */ - if ((rbio->operation == BTRFS_RBIO_READ_REBUILD || - rbio->operation == BTRFS_RBIO_REBUILD_MISSING)) { + if (rbio->operation == BTRFS_RBIO_READ_REBUILD) { sector = sector_in_rbio(rbio, stripe_nr, sector_nr, 0); } else { sector = rbio_stripe_sector(rbio, stripe_nr, sector_nr); @@ -1897,8 +1891,7 @@ static int recover_sectors(struct btrfs_raid_bio *rbio) goto out; } - if (rbio->operation == BTRFS_RBIO_READ_REBUILD || - rbio->operation == BTRFS_RBIO_REBUILD_MISSING) { + if (rbio->operation == BTRFS_RBIO_READ_REBUILD) { spin_lock(&rbio->bio_list_lock); set_bit(RBIO_RMW_LOCKED_BIT, &rbio->flags); spin_unlock(&rbio->bio_list_lock); @@ -2112,8 +2105,8 @@ static void fill_data_csums(struct btrfs_raid_bio *rbio) goto error; } - ret = btrfs_lookup_csums_bitmap(csum_root, start, start + len - 1, - rbio->csum_buf, rbio->csum_bitmap, false); + ret = btrfs_lookup_csums_bitmap(csum_root, NULL, start, start + len - 1, + rbio->csum_buf, rbio->csum_bitmap); if (ret < 0) goto error; if (bitmap_empty(rbio->csum_bitmap, len >> fs_info->sectorsize_bits)) @@ -2198,11 +2191,11 @@ static void submit_write_bios(struct btrfs_raid_bio *rbio, while ((bio = bio_list_pop(bio_list))) { bio->bi_end_io = raid_wait_write_end_io; - if (trace_raid56_write_stripe_enabled()) { + if (trace_raid56_write_enabled()) { struct raid56_bio_trace_info trace_info = { 0 }; bio_get_trace_info(rbio, bio, &trace_info); - trace_raid56_write_stripe(rbio, bio, &trace_info); + trace_raid56_write(rbio, bio, &trace_info); } submit_bio(bio); } diff --git a/fs/btrfs/raid56.h b/fs/btrfs/raid56.h index 0e84c9c9293f..45e6ff78316f 100644 --- a/fs/btrfs/raid56.h +++ b/fs/btrfs/raid56.h @@ -14,7 +14,6 @@ enum btrfs_rbio_ops { BTRFS_RBIO_WRITE, BTRFS_RBIO_READ_REBUILD, BTRFS_RBIO_PARITY_SCRUB, - BTRFS_RBIO_REBUILD_MISSING, }; struct btrfs_raid_bio { diff --git a/fs/btrfs/reflink.c b/fs/btrfs/reflink.c index 0474bbe39da7..65d2bd6910f2 100644 --- a/fs/btrfs/reflink.c +++ b/fs/btrfs/reflink.c @@ -30,8 +30,7 @@ static int clone_finish_inode_update(struct btrfs_trans_handle *trans, inode_inc_iversion(inode); if (!no_time_update) { - inode->i_mtime = current_time(inode); - inode->i_ctime = inode->i_mtime; + inode->i_mtime = inode_set_ctime_current(inode); } /* * We round up to the block size at eof when determining which diff --git a/fs/btrfs/relocation.c b/fs/btrfs/relocation.c index 25a3361caedc..9951a0caf5bb 100644 --- a/fs/btrfs/relocation.c +++ b/fs/btrfs/relocation.c @@ -1916,7 +1916,39 @@ again: err = PTR_ERR(root); break; } - ASSERT(root->reloc_root == reloc_root); + + if (unlikely(root->reloc_root != reloc_root)) { + if (root->reloc_root) { + btrfs_err(fs_info, +"reloc tree mismatch, root %lld has reloc root key (%lld %u %llu) gen %llu, expect reloc root key (%lld %u %llu) gen %llu", + root->root_key.objectid, + root->reloc_root->root_key.objectid, + root->reloc_root->root_key.type, + root->reloc_root->root_key.offset, + btrfs_root_generation( + &root->reloc_root->root_item), + reloc_root->root_key.objectid, + reloc_root->root_key.type, + reloc_root->root_key.offset, + btrfs_root_generation( + &reloc_root->root_item)); + } else { + btrfs_err(fs_info, +"reloc tree mismatch, root %lld has no reloc root, expect reloc root key (%lld %u %llu) gen %llu", + root->root_key.objectid, + reloc_root->root_key.objectid, + reloc_root->root_key.type, + reloc_root->root_key.offset, + btrfs_root_generation( + &reloc_root->root_item)); + } + list_add(&reloc_root->root_list, &reloc_roots); + btrfs_put_root(root); + btrfs_abort_transaction(trans, -EUCLEAN); + if (!err) + err = -EUCLEAN; + break; + } /* * set reference count to 1, so btrfs_recover_relocation @@ -1989,7 +2021,7 @@ again: root = btrfs_get_fs_root(fs_info, reloc_root->root_key.offset, false); if (btrfs_root_refs(&reloc_root->root_item) > 0) { - if (IS_ERR(root)) { + if (WARN_ON(IS_ERR(root))) { /* * For recovery we read the fs roots on mount, * and if we didn't find the root then we marked @@ -1998,17 +2030,14 @@ again: * memory. However there's no reason we can't * handle the error properly here just in case. */ - ASSERT(0); ret = PTR_ERR(root); goto out; } - if (root->reloc_root != reloc_root) { + if (WARN_ON(root->reloc_root != reloc_root)) { /* - * This is actually impossible without something - * going really wrong (like weird race condition - * or cosmic rays). + * This can happen if on-disk metadata has some + * corruption, e.g. bad reloc tree key offset. */ - ASSERT(0); ret = -EINVAL; goto out; } @@ -2977,9 +3006,6 @@ static int relocate_one_page(struct inode *inode, struct file_ra_state *ra, if (!page) return -ENOMEM; } - ret = set_page_extent_mapped(page); - if (ret < 0) - goto release_page; if (PageReadahead(page)) page_cache_async_readahead(inode->i_mapping, ra, NULL, @@ -2995,6 +3021,15 @@ static int relocate_one_page(struct inode *inode, struct file_ra_state *ra, } } + /* + * We could have lost page private when we dropped the lock to read the + * page above, make sure we set_page_extent_mapped here so we have any + * of the subpage blocksize stuff we need in place. + */ + ret = set_page_extent_mapped(page); + if (ret < 0) + goto release_page; + page_start = page_offset(page); page_end = page_start + PAGE_SIZE - 1; @@ -3221,12 +3256,13 @@ static int add_tree_block(struct reloc_control *rc, if (type == BTRFS_TREE_BLOCK_REF_KEY) owner = btrfs_extent_inline_ref_offset(eb, iref); } - } else if (unlikely(item_size == sizeof(struct btrfs_extent_item_v0))) { - btrfs_print_v0_err(eb->fs_info); - btrfs_handle_fs_error(eb->fs_info, -EINVAL, NULL); - return -EINVAL; } else { - BUG(); + btrfs_print_leaf(eb); + btrfs_err(rc->block_group->fs_info, + "unrecognized tree backref at tree block %llu slot %u", + eb->start, path->slots[0]); + btrfs_release_path(path); + return -EUCLEAN; } btrfs_release_path(path); @@ -3469,6 +3505,8 @@ int find_next_extent(struct reloc_control *rc, struct btrfs_path *path, last = rc->block_group->start + rc->block_group->length; while (1) { + bool block_found; + cond_resched(); if (rc->search_start >= last) { ret = 1; @@ -3519,11 +3557,11 @@ next: goto next; } - ret = find_first_extent_bit(&rc->processed_blocks, - key.objectid, &start, &end, - EXTENT_DIRTY, NULL); + block_found = find_first_extent_bit(&rc->processed_blocks, + key.objectid, &start, &end, + EXTENT_DIRTY, NULL); - if (ret == 0 && start <= key.objectid) { + if (block_found && start <= key.objectid) { btrfs_release_path(path); rc->search_start = end + 1; } else { diff --git a/fs/btrfs/scrub.c b/fs/btrfs/scrub.c index 4cae41bd6de0..b877203f1dc5 100644 --- a/fs/btrfs/scrub.c +++ b/fs/btrfs/scrub.c @@ -43,9 +43,20 @@ struct scrub_ctx; /* * The following value only influences the performance. * - * This determines the batch size for stripe submitted in one go. + * This detemines how many stripes would be submitted in one go, + * which is 512KiB (BTRFS_STRIPE_LEN * SCRUB_STRIPES_PER_GROUP). */ -#define SCRUB_STRIPES_PER_SCTX 8 /* That would be 8 64K stripe per-device. */ +#define SCRUB_STRIPES_PER_GROUP 8 + +/* + * How many groups we have for each sctx. + * + * This would be 8M per device, the same value as the old scrub in-flight bios + * size limit. + */ +#define SCRUB_GROUPS_PER_SCTX 16 + +#define SCRUB_TOTAL_STRIPES (SCRUB_GROUPS_PER_SCTX * SCRUB_STRIPES_PER_GROUP) /* * The following value times PAGE_SIZE needs to be large enough to match the @@ -172,9 +183,11 @@ struct scrub_stripe { }; struct scrub_ctx { - struct scrub_stripe stripes[SCRUB_STRIPES_PER_SCTX]; + struct scrub_stripe stripes[SCRUB_TOTAL_STRIPES]; struct scrub_stripe *raid56_data_stripes; struct btrfs_fs_info *fs_info; + struct btrfs_path extent_path; + struct btrfs_path csum_path; int first_free; int cur_stripe; atomic_t cancel_req; @@ -315,10 +328,10 @@ static noinline_for_stack void scrub_free_ctx(struct scrub_ctx *sctx) if (!sctx) return; - for (i = 0; i < SCRUB_STRIPES_PER_SCTX; i++) + for (i = 0; i < SCRUB_TOTAL_STRIPES; i++) release_scrub_stripe(&sctx->stripes[i]); - kfree(sctx); + kvfree(sctx); } static void scrub_put_ctx(struct scrub_ctx *sctx) @@ -333,13 +346,20 @@ static noinline_for_stack struct scrub_ctx *scrub_setup_ctx( struct scrub_ctx *sctx; int i; - sctx = kzalloc(sizeof(*sctx), GFP_KERNEL); + /* Since sctx has inline 128 stripes, it can go beyond 64K easily. Use + * kvzalloc(). + */ + sctx = kvzalloc(sizeof(*sctx), GFP_KERNEL); if (!sctx) goto nomem; refcount_set(&sctx->refs, 1); sctx->is_dev_replace = is_dev_replace; sctx->fs_info = fs_info; - for (i = 0; i < SCRUB_STRIPES_PER_SCTX; i++) { + sctx->extent_path.search_commit_root = 1; + sctx->extent_path.skip_locking = 1; + sctx->csum_path.search_commit_root = 1; + sctx->csum_path.skip_locking = 1; + for (i = 0; i < SCRUB_TOTAL_STRIPES; i++) { int ret; ret = init_scrub_stripe(fs_info, &sctx->stripes[i]); @@ -605,7 +625,8 @@ static void scrub_verify_one_metadata(struct scrub_stripe *stripe, int sector_nr btrfs_stack_header_bytenr(header), logical); return; } - if (memcmp(header->fsid, fs_info->fs_devices->fsid, BTRFS_FSID_SIZE) != 0) { + if (memcmp(header->fsid, fs_info->fs_devices->metadata_uuid, + BTRFS_FSID_SIZE) != 0) { bitmap_set(&stripe->meta_error_bitmap, sector_nr, sectors_per_tree); bitmap_set(&stripe->error_bitmap, sector_nr, sectors_per_tree); btrfs_warn_rl(fs_info, @@ -969,6 +990,9 @@ skip: spin_unlock(&sctx->stat_lock); } +static void scrub_write_sectors(struct scrub_ctx *sctx, struct scrub_stripe *stripe, + unsigned long write_bitmap, bool dev_replace); + /* * The main entrance for all read related scrub work, including: * @@ -977,13 +1001,16 @@ skip: * - Go through the remaining mirrors and try to read as large blocksize as * possible * - Go through all mirrors (including the failed mirror) sector-by-sector + * - Submit writeback for repaired sectors * - * Writeback does not happen here, it needs extra synchronization. + * Writeback for dev-replace does not happen here, it needs extra + * synchronization for zoned devices. */ static void scrub_stripe_read_repair_worker(struct work_struct *work) { struct scrub_stripe *stripe = container_of(work, struct scrub_stripe, work); - struct btrfs_fs_info *fs_info = stripe->bg->fs_info; + struct scrub_ctx *sctx = stripe->sctx; + struct btrfs_fs_info *fs_info = sctx->fs_info; int num_copies = btrfs_num_copies(fs_info, stripe->bg->start, stripe->bg->length); int mirror; @@ -1048,7 +1075,23 @@ static void scrub_stripe_read_repair_worker(struct work_struct *work) goto out; } out: - scrub_stripe_report_errors(stripe->sctx, stripe); + /* + * Submit the repaired sectors. For zoned case, we cannot do repair + * in-place, but queue the bg to be relocated. + */ + if (btrfs_is_zoned(fs_info)) { + if (!bitmap_empty(&stripe->error_bitmap, stripe->nr_sectors)) + btrfs_repair_one_zone(fs_info, sctx->stripes[0].bg->start); + } else if (!sctx->readonly) { + unsigned long repaired; + + bitmap_andnot(&repaired, &stripe->init_error_bitmap, + &stripe->error_bitmap, stripe->nr_sectors); + scrub_write_sectors(sctx, stripe, repaired, false); + wait_scrub_stripe_io(stripe); + } + + scrub_stripe_report_errors(sctx, stripe); set_bit(SCRUB_STRIPE_FLAG_REPAIR_DONE, &stripe->state); wake_up(&stripe->repair_wait); } @@ -1261,7 +1304,6 @@ static int get_raid56_logic_offset(u64 physical, int num, /* Work out the disk rotation on this stripe-set */ rot = stripe_nr % map->num_stripes; - stripe_nr /= map->num_stripes; /* calculate which stripe this data locates */ rot += i; stripe_index = rot % map->num_stripes; @@ -1467,6 +1509,8 @@ static void scrub_stripe_reset_bitmaps(struct scrub_stripe *stripe) * Return <0 for error. */ static int scrub_find_fill_first_stripe(struct btrfs_block_group *bg, + struct btrfs_path *extent_path, + struct btrfs_path *csum_path, struct btrfs_device *dev, u64 physical, int mirror_num, u64 logical_start, u32 logical_len, @@ -1476,7 +1520,6 @@ static int scrub_find_fill_first_stripe(struct btrfs_block_group *bg, struct btrfs_root *extent_root = btrfs_extent_root(fs_info, bg->start); struct btrfs_root *csum_root = btrfs_csum_root(fs_info, bg->start); const u64 logical_end = logical_start + logical_len; - struct btrfs_path path = { 0 }; u64 cur_logical = logical_start; u64 stripe_end; u64 extent_start; @@ -1492,14 +1535,13 @@ static int scrub_find_fill_first_stripe(struct btrfs_block_group *bg, /* The range must be inside the bg. */ ASSERT(logical_start >= bg->start && logical_end <= bg->start + bg->length); - path.search_commit_root = 1; - path.skip_locking = 1; - - ret = find_first_extent_item(extent_root, &path, logical_start, logical_len); + ret = find_first_extent_item(extent_root, extent_path, logical_start, + logical_len); /* Either error or not found. */ if (ret) goto out; - get_extent_info(&path, &extent_start, &extent_len, &extent_flags, &extent_gen); + get_extent_info(extent_path, &extent_start, &extent_len, &extent_flags, + &extent_gen); if (extent_flags & BTRFS_EXTENT_FLAG_TREE_BLOCK) stripe->nr_meta_extents++; if (extent_flags & BTRFS_EXTENT_FLAG_DATA) @@ -1527,7 +1569,7 @@ static int scrub_find_fill_first_stripe(struct btrfs_block_group *bg, /* Fill the extent info for the remaining sectors. */ while (cur_logical <= stripe_end) { - ret = find_first_extent_item(extent_root, &path, cur_logical, + ret = find_first_extent_item(extent_root, extent_path, cur_logical, stripe_end - cur_logical + 1); if (ret < 0) goto out; @@ -1535,7 +1577,7 @@ static int scrub_find_fill_first_stripe(struct btrfs_block_group *bg, ret = 0; break; } - get_extent_info(&path, &extent_start, &extent_len, + get_extent_info(extent_path, &extent_start, &extent_len, &extent_flags, &extent_gen); if (extent_flags & BTRFS_EXTENT_FLAG_TREE_BLOCK) stripe->nr_meta_extents++; @@ -1560,9 +1602,9 @@ static int scrub_find_fill_first_stripe(struct btrfs_block_group *bg, */ ASSERT(BITS_PER_LONG >= BTRFS_STRIPE_LEN >> fs_info->sectorsize_bits); - ret = btrfs_lookup_csums_bitmap(csum_root, stripe->logical, - stripe_end, stripe->csums, - &csum_bitmap, true); + ret = btrfs_lookup_csums_bitmap(csum_root, csum_path, + stripe->logical, stripe_end, + stripe->csums, &csum_bitmap); if (ret < 0) goto out; if (ret > 0) @@ -1575,7 +1617,6 @@ static int scrub_find_fill_first_stripe(struct btrfs_block_group *bg, } set_bit(SCRUB_STRIPE_FLAG_INITIALIZED, &stripe->state); out: - btrfs_release_path(&path); return ret; } @@ -1653,6 +1694,28 @@ static bool stripe_has_metadata_error(struct scrub_stripe *stripe) return false; } +static void submit_initial_group_read(struct scrub_ctx *sctx, + unsigned int first_slot, + unsigned int nr_stripes) +{ + struct blk_plug plug; + + ASSERT(first_slot < SCRUB_TOTAL_STRIPES); + ASSERT(first_slot + nr_stripes <= SCRUB_TOTAL_STRIPES); + + scrub_throttle_dev_io(sctx, sctx->stripes[0].dev, + btrfs_stripe_nr_to_offset(nr_stripes)); + blk_start_plug(&plug); + for (int i = 0; i < nr_stripes; i++) { + struct scrub_stripe *stripe = &sctx->stripes[first_slot + i]; + + /* Those stripes should be initialized. */ + ASSERT(test_bit(SCRUB_STRIPE_FLAG_INITIALIZED, &stripe->state)); + scrub_submit_initial_read(sctx, stripe); + } + blk_finish_plug(&plug); +} + static int flush_scrub_stripes(struct scrub_ctx *sctx) { struct btrfs_fs_info *fs_info = sctx->fs_info; @@ -1665,11 +1728,11 @@ static int flush_scrub_stripes(struct scrub_ctx *sctx) ASSERT(test_bit(SCRUB_STRIPE_FLAG_INITIALIZED, &sctx->stripes[0].state)); - scrub_throttle_dev_io(sctx, sctx->stripes[0].dev, - btrfs_stripe_nr_to_offset(nr_stripes)); - for (int i = 0; i < nr_stripes; i++) { - stripe = &sctx->stripes[i]; - scrub_submit_initial_read(sctx, stripe); + /* Submit the stripes which are populated but not submitted. */ + if (nr_stripes % SCRUB_STRIPES_PER_GROUP) { + const int first_slot = round_down(nr_stripes, SCRUB_STRIPES_PER_GROUP); + + submit_initial_group_read(sctx, first_slot, nr_stripes - first_slot); } for (int i = 0; i < nr_stripes; i++) { @@ -1679,32 +1742,6 @@ static int flush_scrub_stripes(struct scrub_ctx *sctx) test_bit(SCRUB_STRIPE_FLAG_REPAIR_DONE, &stripe->state)); } - /* - * Submit the repaired sectors. For zoned case, we cannot do repair - * in-place, but queue the bg to be relocated. - */ - if (btrfs_is_zoned(fs_info)) { - for (int i = 0; i < nr_stripes; i++) { - stripe = &sctx->stripes[i]; - - if (!bitmap_empty(&stripe->error_bitmap, stripe->nr_sectors)) { - btrfs_repair_one_zone(fs_info, - sctx->stripes[0].bg->start); - break; - } - } - } else if (!sctx->readonly) { - for (int i = 0; i < nr_stripes; i++) { - unsigned long repaired; - - stripe = &sctx->stripes[i]; - - bitmap_andnot(&repaired, &stripe->init_error_bitmap, - &stripe->error_bitmap, stripe->nr_sectors); - scrub_write_sectors(sctx, stripe, repaired, false); - } - } - /* Submit for dev-replace. */ if (sctx->is_dev_replace) { /* @@ -1749,28 +1786,40 @@ static void raid56_scrub_wait_endio(struct bio *bio) static int queue_scrub_stripe(struct scrub_ctx *sctx, struct btrfs_block_group *bg, struct btrfs_device *dev, int mirror_num, - u64 logical, u32 length, u64 physical) + u64 logical, u32 length, u64 physical, + u64 *found_logical_ret) { struct scrub_stripe *stripe; int ret; - /* No available slot, submit all stripes and wait for them. */ - if (sctx->cur_stripe >= SCRUB_STRIPES_PER_SCTX) { - ret = flush_scrub_stripes(sctx); - if (ret < 0) - return ret; - } + /* + * There should always be one slot left, as caller filling the last + * slot should flush them all. + */ + ASSERT(sctx->cur_stripe < SCRUB_TOTAL_STRIPES); stripe = &sctx->stripes[sctx->cur_stripe]; - - /* We can queue one stripe using the remaining slot. */ scrub_reset_stripe(stripe); - ret = scrub_find_fill_first_stripe(bg, dev, physical, mirror_num, - logical, length, stripe); + ret = scrub_find_fill_first_stripe(bg, &sctx->extent_path, + &sctx->csum_path, dev, physical, + mirror_num, logical, length, stripe); /* Either >0 as no more extents or <0 for error. */ if (ret) return ret; + if (found_logical_ret) + *found_logical_ret = stripe->logical; sctx->cur_stripe++; + + /* We filled one group, submit it. */ + if (sctx->cur_stripe % SCRUB_STRIPES_PER_GROUP == 0) { + const int first_slot = sctx->cur_stripe - SCRUB_STRIPES_PER_GROUP; + + submit_initial_group_read(sctx, first_slot, SCRUB_STRIPES_PER_GROUP); + } + + /* Last slot used, flush them all. */ + if (sctx->cur_stripe == SCRUB_TOTAL_STRIPES) + return flush_scrub_stripes(sctx); return 0; } @@ -1784,6 +1833,8 @@ static int scrub_raid56_parity_stripe(struct scrub_ctx *sctx, struct btrfs_fs_info *fs_info = sctx->fs_info; struct btrfs_raid_bio *rbio; struct btrfs_io_context *bioc = NULL; + struct btrfs_path extent_path = { 0 }; + struct btrfs_path csum_path = { 0 }; struct bio *bio; struct scrub_stripe *stripe; bool all_empty = true; @@ -1794,6 +1845,16 @@ static int scrub_raid56_parity_stripe(struct scrub_ctx *sctx, ASSERT(sctx->raid56_data_stripes); + /* + * For data stripe search, we cannot re-use the same extent/csum paths, + * as the data stripe bytenr may be smaller than previous extent. Thus + * we have to use our own extent/csum paths. + */ + extent_path.search_commit_root = 1; + extent_path.skip_locking = 1; + csum_path.search_commit_root = 1; + csum_path.skip_locking = 1; + for (int i = 0; i < data_stripes; i++) { int stripe_index; int rot; @@ -1808,7 +1869,7 @@ static int scrub_raid56_parity_stripe(struct scrub_ctx *sctx, scrub_reset_stripe(stripe); set_bit(SCRUB_STRIPE_FLAG_NO_REPORT, &stripe->state); - ret = scrub_find_fill_first_stripe(bg, + ret = scrub_find_fill_first_stripe(bg, &extent_path, &csum_path, map->stripes[stripe_index].dev, physical, 1, full_stripe_start + btrfs_stripe_nr_to_offset(i), BTRFS_STRIPE_LEN, stripe); @@ -1853,24 +1914,6 @@ static int scrub_raid56_parity_stripe(struct scrub_ctx *sctx, /* For now, no zoned support for RAID56. */ ASSERT(!btrfs_is_zoned(sctx->fs_info)); - /* Writeback for the repaired sectors. */ - for (int i = 0; i < data_stripes; i++) { - unsigned long repaired; - - stripe = &sctx->raid56_data_stripes[i]; - - bitmap_andnot(&repaired, &stripe->init_error_bitmap, - &stripe->error_bitmap, stripe->nr_sectors); - scrub_write_sectors(sctx, stripe, repaired, false); - } - - /* Wait for the above writebacks to finish. */ - for (int i = 0; i < data_stripes; i++) { - stripe = &sctx->raid56_data_stripes[i]; - - wait_scrub_stripe_io(stripe); - } - /* * Now all data stripes are properly verified. Check if we have any * unrepaired, if so abort immediately or we could further corrupt the @@ -1936,6 +1979,8 @@ static int scrub_raid56_parity_stripe(struct scrub_ctx *sctx, bio_put(bio); btrfs_bio_counter_dec(fs_info); + btrfs_release_path(&extent_path); + btrfs_release_path(&csum_path); out: return ret; } @@ -1957,18 +2002,15 @@ static int scrub_simple_mirror(struct scrub_ctx *sctx, { struct btrfs_fs_info *fs_info = sctx->fs_info; const u64 logical_end = logical_start + logical_length; - /* An artificial limit, inherit from old scrub behavior */ - struct btrfs_path path = { 0 }; u64 cur_logical = logical_start; int ret; /* The range must be inside the bg */ ASSERT(logical_start >= bg->start && logical_end <= bg->start + bg->length); - path.search_commit_root = 1; - path.skip_locking = 1; /* Go through each extent items inside the logical range */ while (cur_logical < logical_end) { + u64 found_logical; u64 cur_physical = physical + cur_logical - logical_start; /* Canceled? */ @@ -1993,7 +2035,7 @@ static int scrub_simple_mirror(struct scrub_ctx *sctx, ret = queue_scrub_stripe(sctx, bg, device, mirror_num, cur_logical, logical_end - cur_logical, - cur_physical); + cur_physical, &found_logical); if (ret > 0) { /* No more extent, just update the accounting */ sctx->stat.last_physical = physical + logical_length; @@ -2003,14 +2045,11 @@ static int scrub_simple_mirror(struct scrub_ctx *sctx, if (ret < 0) break; - ASSERT(sctx->cur_stripe > 0); - cur_logical = sctx->stripes[sctx->cur_stripe - 1].logical - + BTRFS_STRIPE_LEN; + cur_logical = found_logical + BTRFS_STRIPE_LEN; /* Don't hold CPU for too long time */ cond_resched(); } - btrfs_release_path(&path); return ret; } @@ -2108,6 +2147,9 @@ static noinline_for_stack int scrub_stripe(struct scrub_ctx *sctx, u64 stripe_logical; int stop_loop = 0; + /* Extent_path should be released by now. */ + ASSERT(sctx->extent_path.nodes[0] == NULL); + scrub_blocked_if_needed(fs_info); if (sctx->is_dev_replace && @@ -2226,6 +2268,9 @@ out: ret2 = flush_scrub_stripes(sctx); if (!ret) ret = ret2; + btrfs_release_path(&sctx->extent_path); + btrfs_release_path(&sctx->csum_path); + if (sctx->raid56_data_stripes) { for (int i = 0; i < nr_data_stripes(map); i++) release_scrub_stripe(&sctx->raid56_data_stripes[i]); @@ -2710,8 +2755,7 @@ static void scrub_workers_put(struct btrfs_fs_info *fs_info) /* * get a reference count on fs_info->scrub_workers. start worker if necessary */ -static noinline_for_stack int scrub_workers_get(struct btrfs_fs_info *fs_info, - int is_dev_replace) +static noinline_for_stack int scrub_workers_get(struct btrfs_fs_info *fs_info) { struct workqueue_struct *scrub_workers = NULL; unsigned int flags = WQ_FREEZABLE | WQ_UNBOUND; @@ -2721,10 +2765,7 @@ static noinline_for_stack int scrub_workers_get(struct btrfs_fs_info *fs_info, if (refcount_inc_not_zero(&fs_info->scrub_workers_refcnt)) return 0; - if (is_dev_replace) - scrub_workers = alloc_ordered_workqueue("btrfs-scrub", flags); - else - scrub_workers = alloc_workqueue("btrfs-scrub", flags, max_active); + scrub_workers = alloc_workqueue("btrfs-scrub", flags, max_active); if (!scrub_workers) return -ENOMEM; @@ -2776,7 +2817,7 @@ int btrfs_scrub_dev(struct btrfs_fs_info *fs_info, u64 devid, u64 start, if (IS_ERR(sctx)) return PTR_ERR(sctx); - ret = scrub_workers_get(fs_info, is_dev_replace); + ret = scrub_workers_get(fs_info); if (ret) goto out_free_ctx; diff --git a/fs/btrfs/send.c b/fs/btrfs/send.c index 8bfd44750efe..3a566150c531 100644 --- a/fs/btrfs/send.c +++ b/fs/btrfs/send.c @@ -3685,7 +3685,7 @@ static void tail_append_pending_moves(struct send_ctx *sctx, static int apply_children_dir_moves(struct send_ctx *sctx) { struct pending_dir_move *pm; - struct list_head stack; + LIST_HEAD(stack); u64 parent_ino = sctx->cur_ino; int ret = 0; @@ -3693,7 +3693,6 @@ static int apply_children_dir_moves(struct send_ctx *sctx) if (!pm) return 0; - INIT_LIST_HEAD(&stack); tail_append_pending_moves(sctx, pm, &stack); while (!list_empty(&stack)) { @@ -4165,7 +4164,7 @@ static int process_recorded_refs(struct send_ctx *sctx, int *pending_move) int ret = 0; struct recorded_ref *cur; struct recorded_ref *cur2; - struct list_head check_dirs; + LIST_HEAD(check_dirs); struct fs_path *valid_path = NULL; u64 ow_inode = 0; u64 ow_gen; @@ -4184,7 +4183,6 @@ static int process_recorded_refs(struct send_ctx *sctx, int *pending_move) * which is always '..' */ BUG_ON(sctx->cur_ino <= BTRFS_FIRST_FREE_OBJECTID); - INIT_LIST_HEAD(&check_dirs); valid_path = fs_path_alloc(); if (!valid_path) { diff --git a/fs/btrfs/space-info.c b/fs/btrfs/space-info.c index 75e7fa337e66..d7e8cd4f140c 100644 --- a/fs/btrfs/space-info.c +++ b/fs/btrfs/space-info.c @@ -389,11 +389,7 @@ int btrfs_can_overcommit(struct btrfs_fs_info *fs_info, return 0; used = btrfs_space_info_used(space_info, true); - if (test_bit(BTRFS_FS_ACTIVE_ZONE_TRACKING, &fs_info->flags) && - (space_info->flags & BTRFS_BLOCK_GROUP_METADATA)) - avail = 0; - else - avail = calc_available_free_space(fs_info, space_info, flush); + avail = calc_available_free_space(fs_info, space_info, flush); if (used + bytes < space_info->total_bytes + avail) return 1; @@ -510,6 +506,7 @@ void btrfs_dump_space_info(struct btrfs_fs_info *fs_info, int dump_block_groups) { struct btrfs_block_group *cache; + u64 total_avail = 0; int index = 0; spin_lock(&info->lock); @@ -523,18 +520,27 @@ void btrfs_dump_space_info(struct btrfs_fs_info *fs_info, down_read(&info->groups_sem); again: list_for_each_entry(cache, &info->block_groups[index], list) { + u64 avail; + spin_lock(&cache->lock); + avail = cache->length - cache->used - cache->pinned - + cache->reserved - cache->delalloc_bytes - + cache->bytes_super - cache->zone_unusable; btrfs_info(fs_info, - "block group %llu has %llu bytes, %llu used %llu pinned %llu reserved %llu zone_unusable %s", - cache->start, cache->length, cache->used, cache->pinned, - cache->reserved, cache->zone_unusable, - cache->ro ? "[readonly]" : ""); +"block group %llu has %llu bytes, %llu used %llu pinned %llu reserved %llu delalloc %llu super %llu zone_unusable (%llu bytes available) %s", + cache->start, cache->length, cache->used, cache->pinned, + cache->reserved, cache->delalloc_bytes, + cache->bytes_super, cache->zone_unusable, + avail, cache->ro ? "[readonly]" : ""); spin_unlock(&cache->lock); btrfs_dump_free_space(cache, bytes); + total_avail += avail; } if (++index < BTRFS_NR_RAID_TYPES) goto again; up_read(&info->groups_sem); + + btrfs_info(fs_info, "%llu bytes available across all block groups", total_avail); } static inline u64 calc_reclaim_items_nr(const struct btrfs_fs_info *fs_info, @@ -715,9 +721,11 @@ static void flush_space(struct btrfs_fs_info *fs_info, else nr = -1; - trans = btrfs_join_transaction(root); + trans = btrfs_join_transaction_nostart(root); if (IS_ERR(trans)) { ret = PTR_ERR(trans); + if (ret == -ENOENT) + ret = 0; break; } ret = btrfs_run_delayed_items_nr(trans, nr); @@ -733,9 +741,11 @@ static void flush_space(struct btrfs_fs_info *fs_info, break; case FLUSH_DELAYED_REFS_NR: case FLUSH_DELAYED_REFS: - trans = btrfs_join_transaction(root); + trans = btrfs_join_transaction_nostart(root); if (IS_ERR(trans)) { ret = PTR_ERR(trans); + if (ret == -ENOENT) + ret = 0; break; } if (state == FLUSH_DELAYED_REFS_NR) @@ -747,18 +757,6 @@ static void flush_space(struct btrfs_fs_info *fs_info, break; case ALLOC_CHUNK: case ALLOC_CHUNK_FORCE: - /* - * For metadata space on zoned filesystem, reaching here means we - * don't have enough space left in active_total_bytes. Try to - * activate a block group first, because we may have inactive - * block group already allocated. - */ - ret = btrfs_zoned_activate_one_bg(fs_info, space_info, false); - if (ret < 0) - break; - else if (ret == 1) - break; - trans = btrfs_join_transaction(root); if (IS_ERR(trans)) { ret = PTR_ERR(trans); @@ -770,22 +768,6 @@ static void flush_space(struct btrfs_fs_info *fs_info, CHUNK_ALLOC_FORCE); btrfs_end_transaction(trans); - /* - * For metadata space on zoned filesystem, allocating a new chunk - * is not enough. We still need to activate the block * group. - * Active the newly allocated block group by (maybe) finishing - * a block group. - */ - if (ret == 1) { - ret = btrfs_zoned_activate_one_bg(fs_info, space_info, true); - /* - * Revert to the original ret regardless we could finish - * one block group or not. - */ - if (ret >= 0) - ret = 1; - } - if (ret > 0 || ret == -ENOSPC) ret = 0; break; @@ -800,9 +782,18 @@ static void flush_space(struct btrfs_fs_info *fs_info, break; case COMMIT_TRANS: ASSERT(current->journal_info == NULL); - trans = btrfs_join_transaction(root); + /* + * We don't want to start a new transaction, just attach to the + * current one or wait it fully commits in case its commit is + * happening at the moment. Note: we don't use a nostart join + * because that does not wait for a transaction to fully commit + * (only for it to be unblocked, state TRANS_STATE_UNBLOCKED). + */ + trans = btrfs_attach_transaction_barrier(root); if (IS_ERR(trans)) { ret = PTR_ERR(trans); + if (ret == -ENOENT) + ret = 0; break; } ret = btrfs_commit_transaction(trans); @@ -1408,8 +1399,18 @@ static void priority_reclaim_metadata_space(struct btrfs_fs_info *fs_info, } } - /* Attempt to steal from the global rsv if we can. */ - if (!steal_from_global_rsv(fs_info, space_info, ticket)) { + /* + * Attempt to steal from the global rsv if we can, except if the fs was + * turned into error mode due to a transaction abort when flushing space + * above, in that case fail with the abort error instead of returning + * success to the caller if we can steal from the global rsv - this is + * just to have caller fail immeditelly instead of later when trying to + * modify the fs, making it easier to debug -ENOSPC problems. + */ + if (BTRFS_FS_ERROR(fs_info)) { + ticket->error = BTRFS_FS_ERROR(fs_info); + remove_ticket(space_info, ticket); + } else if (!steal_from_global_rsv(fs_info, space_info, ticket)) { ticket->error = -ENOSPC; remove_ticket(space_info, ticket); } diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c index f1dd172d8d5b..09bfe68d2ea3 100644 --- a/fs/btrfs/super.c +++ b/fs/btrfs/super.c @@ -709,12 +709,16 @@ int btrfs_parse_options(struct btrfs_fs_info *info, char *options, break; #ifdef CONFIG_BTRFS_FS_CHECK_INTEGRITY case Opt_check_integrity_including_extent_data: + btrfs_warn(info, + "integrity checker is deprecated and will be removed in 6.7"); btrfs_info(info, "enabling check integrity including extent data"); btrfs_set_opt(info->mount_opt, CHECK_INTEGRITY_DATA); btrfs_set_opt(info->mount_opt, CHECK_INTEGRITY); break; case Opt_check_integrity: + btrfs_warn(info, + "integrity checker is deprecated and will be removed in 6.7"); btrfs_info(info, "enabling check integrity"); btrfs_set_opt(info->mount_opt, CHECK_INTEGRITY); break; @@ -727,6 +731,8 @@ int btrfs_parse_options(struct btrfs_fs_info *info, char *options, goto out; } info->check_integrity_print_mask = intarg; + btrfs_warn(info, + "integrity checker is deprecated and will be removed in 6.7"); btrfs_info(info, "check_integrity_print_mask 0x%x", info->check_integrity_print_mask); break; @@ -2144,7 +2150,7 @@ static struct file_system_type btrfs_fs_type = { .name = "btrfs", .mount = btrfs_mount, .kill_sb = btrfs_kill_super, - .fs_flags = FS_REQUIRES_DEV | FS_BINARY_MOUNTDATA, + .fs_flags = FS_REQUIRES_DEV | FS_BINARY_MOUNTDATA | FS_MGTIME, }; static struct file_system_type btrfs_root_fs_type = { @@ -2152,7 +2158,8 @@ static struct file_system_type btrfs_root_fs_type = { .name = "btrfs", .mount = btrfs_mount_root, .kill_sb = btrfs_kill_super, - .fs_flags = FS_REQUIRES_DEV | FS_BINARY_MOUNTDATA | FS_ALLOW_IDMAP, + .fs_flags = FS_REQUIRES_DEV | FS_BINARY_MOUNTDATA | + FS_ALLOW_IDMAP | FS_MGTIME, }; MODULE_ALIAS_FS("btrfs"); diff --git a/fs/btrfs/sysfs.c b/fs/btrfs/sysfs.c index 25294e624851..b1d1ac25237b 100644 --- a/fs/btrfs/sysfs.c +++ b/fs/btrfs/sysfs.c @@ -414,6 +414,12 @@ static ssize_t supported_sectorsizes_show(struct kobject *kobj, BTRFS_ATTR(static_feature, supported_sectorsizes, supported_sectorsizes_show); +static ssize_t acl_show(struct kobject *kobj, struct kobj_attribute *a, char *buf) +{ + return sysfs_emit(buf, "%d\n", !!IS_ENABLED(CONFIG_BTRFS_FS_POSIX_ACL)); +} +BTRFS_ATTR(static_feature, acl, acl_show); + /* * Features which only depend on kernel version. * @@ -421,6 +427,7 @@ BTRFS_ATTR(static_feature, supported_sectorsizes, * btrfs_supported_feature_attrs. */ static struct attribute *btrfs_supported_static_feature_attrs[] = { + BTRFS_ATTR_PTR(static_feature, acl), BTRFS_ATTR_PTR(static_feature, rmdir_subvol), BTRFS_ATTR_PTR(static_feature, supported_checksums), BTRFS_ATTR_PTR(static_feature, send_stream_version), diff --git a/fs/btrfs/tests/extent-io-tests.c b/fs/btrfs/tests/extent-io-tests.c index f6bc6d738555..1cc86af97dc6 100644 --- a/fs/btrfs/tests/extent-io-tests.c +++ b/fs/btrfs/tests/extent-io-tests.c @@ -319,86 +319,139 @@ out: return ret; } -static int check_eb_bitmap(unsigned long *bitmap, struct extent_buffer *eb, - unsigned long len) +static int check_eb_bitmap(unsigned long *bitmap, struct extent_buffer *eb) { unsigned long i; - for (i = 0; i < len * BITS_PER_BYTE; i++) { + for (i = 0; i < eb->len * BITS_PER_BYTE; i++) { int bit, bit1; bit = !!test_bit(i, bitmap); bit1 = !!extent_buffer_test_bit(eb, 0, i); if (bit1 != bit) { - test_err("bits do not match"); + u8 has; + u8 expect; + + read_extent_buffer(eb, &has, i / BITS_PER_BYTE, 1); + expect = bitmap_get_value8(bitmap, ALIGN(i, BITS_PER_BYTE)); + + test_err( + "bits do not match, start byte 0 bit %lu, byte %lu has 0x%02x expect 0x%02x", + i, i / BITS_PER_BYTE, has, expect); return -EINVAL; } bit1 = !!extent_buffer_test_bit(eb, i / BITS_PER_BYTE, i % BITS_PER_BYTE); if (bit1 != bit) { - test_err("offset bits do not match"); + u8 has; + u8 expect; + + read_extent_buffer(eb, &has, i / BITS_PER_BYTE, 1); + expect = bitmap_get_value8(bitmap, ALIGN(i, BITS_PER_BYTE)); + + test_err( + "bits do not match, start byte %lu bit %lu, byte %lu has 0x%02x expect 0x%02x", + i / BITS_PER_BYTE, i % BITS_PER_BYTE, + i / BITS_PER_BYTE, has, expect); return -EINVAL; } } return 0; } -static int __test_eb_bitmaps(unsigned long *bitmap, struct extent_buffer *eb, - unsigned long len) +static int test_bitmap_set(const char *name, unsigned long *bitmap, + struct extent_buffer *eb, + unsigned long byte_start, unsigned long bit_start, + unsigned long bit_len) +{ + int ret; + + bitmap_set(bitmap, byte_start * BITS_PER_BYTE + bit_start, bit_len); + extent_buffer_bitmap_set(eb, byte_start, bit_start, bit_len); + ret = check_eb_bitmap(bitmap, eb); + if (ret < 0) + test_err("%s test failed", name); + return ret; +} + +static int test_bitmap_clear(const char *name, unsigned long *bitmap, + struct extent_buffer *eb, + unsigned long byte_start, unsigned long bit_start, + unsigned long bit_len) +{ + int ret; + + bitmap_clear(bitmap, byte_start * BITS_PER_BYTE + bit_start, bit_len); + extent_buffer_bitmap_clear(eb, byte_start, bit_start, bit_len); + ret = check_eb_bitmap(bitmap, eb); + if (ret < 0) + test_err("%s test failed", name); + return ret; +} +static int __test_eb_bitmaps(unsigned long *bitmap, struct extent_buffer *eb) { unsigned long i, j; + unsigned long byte_len = eb->len; u32 x; int ret; - memset(bitmap, 0, len); - memzero_extent_buffer(eb, 0, len); - if (memcmp_extent_buffer(eb, bitmap, 0, len) != 0) { - test_err("bitmap was not zeroed"); - return -EINVAL; - } + ret = test_bitmap_clear("clear all run 1", bitmap, eb, 0, 0, + byte_len * BITS_PER_BYTE); + if (ret < 0) + return ret; - bitmap_set(bitmap, 0, len * BITS_PER_BYTE); - extent_buffer_bitmap_set(eb, 0, 0, len * BITS_PER_BYTE); - ret = check_eb_bitmap(bitmap, eb, len); - if (ret) { - test_err("setting all bits failed"); + ret = test_bitmap_set("set all", bitmap, eb, 0, 0, byte_len * BITS_PER_BYTE); + if (ret < 0) return ret; - } - bitmap_clear(bitmap, 0, len * BITS_PER_BYTE); - extent_buffer_bitmap_clear(eb, 0, 0, len * BITS_PER_BYTE); - ret = check_eb_bitmap(bitmap, eb, len); - if (ret) { - test_err("clearing all bits failed"); + ret = test_bitmap_clear("clear all run 2", bitmap, eb, 0, 0, + byte_len * BITS_PER_BYTE); + if (ret < 0) + return ret; + + ret = test_bitmap_set("same byte set", bitmap, eb, 0, 2, 4); + if (ret < 0) + return ret; + + ret = test_bitmap_clear("same byte partial clear", bitmap, eb, 0, 4, 1); + if (ret < 0) + return ret; + + ret = test_bitmap_set("cross byte set", bitmap, eb, 2, 4, 8); + if (ret < 0) + return ret; + + ret = test_bitmap_set("cross multi byte set", bitmap, eb, 4, 4, 24); + if (ret < 0) + return ret; + + ret = test_bitmap_clear("cross byte clear", bitmap, eb, 2, 6, 4); + if (ret < 0) + return ret; + + ret = test_bitmap_clear("cross multi byte clear", bitmap, eb, 4, 6, 20); + if (ret < 0) return ret; - } /* Straddling pages test */ - if (len > PAGE_SIZE) { - bitmap_set(bitmap, - (PAGE_SIZE - sizeof(long) / 2) * BITS_PER_BYTE, - sizeof(long) * BITS_PER_BYTE); - extent_buffer_bitmap_set(eb, PAGE_SIZE - sizeof(long) / 2, 0, - sizeof(long) * BITS_PER_BYTE); - ret = check_eb_bitmap(bitmap, eb, len); - if (ret) { - test_err("setting straddling pages failed"); + if (byte_len > PAGE_SIZE) { + ret = test_bitmap_set("cross page set", bitmap, eb, + PAGE_SIZE - sizeof(long) / 2, 0, + sizeof(long) * BITS_PER_BYTE); + if (ret < 0) + return ret; + + ret = test_bitmap_set("cross page set all", bitmap, eb, 0, 0, + byte_len * BITS_PER_BYTE); + if (ret < 0) return ret; - } - bitmap_set(bitmap, 0, len * BITS_PER_BYTE); - bitmap_clear(bitmap, - (PAGE_SIZE - sizeof(long) / 2) * BITS_PER_BYTE, - sizeof(long) * BITS_PER_BYTE); - extent_buffer_bitmap_set(eb, 0, 0, len * BITS_PER_BYTE); - extent_buffer_bitmap_clear(eb, PAGE_SIZE - sizeof(long) / 2, 0, + ret = test_bitmap_clear("cross page clear", bitmap, eb, + PAGE_SIZE - sizeof(long) / 2, 0, sizeof(long) * BITS_PER_BYTE); - ret = check_eb_bitmap(bitmap, eb, len); - if (ret) { - test_err("clearing straddling pages failed"); + if (ret < 0) return ret; - } } /* @@ -406,9 +459,12 @@ static int __test_eb_bitmaps(unsigned long *bitmap, struct extent_buffer *eb, * something repetitive that could miss some hypothetical off-by-n bug. */ x = 0; - bitmap_clear(bitmap, 0, len * BITS_PER_BYTE); - extent_buffer_bitmap_clear(eb, 0, 0, len * BITS_PER_BYTE); - for (i = 0; i < len * BITS_PER_BYTE / 32; i++) { + ret = test_bitmap_clear("clear all run 3", bitmap, eb, 0, 0, + byte_len * BITS_PER_BYTE); + if (ret < 0) + return ret; + + for (i = 0; i < byte_len * BITS_PER_BYTE / 32; i++) { x = (0x19660dULL * (u64)x + 0x3c6ef35fULL) & 0xffffffffU; for (j = 0; j < 32; j++) { if (x & (1U << j)) { @@ -418,7 +474,7 @@ static int __test_eb_bitmaps(unsigned long *bitmap, struct extent_buffer *eb, } } - ret = check_eb_bitmap(bitmap, eb, len); + ret = check_eb_bitmap(bitmap, eb); if (ret) { test_err("random bit pattern failed"); return ret; @@ -456,7 +512,7 @@ static int test_eb_bitmaps(u32 sectorsize, u32 nodesize) goto out; } - ret = __test_eb_bitmaps(bitmap, eb, nodesize); + ret = __test_eb_bitmaps(bitmap, eb); if (ret) goto out; @@ -473,7 +529,7 @@ static int test_eb_bitmaps(u32 sectorsize, u32 nodesize) goto out; } - ret = __test_eb_bitmaps(bitmap, eb, nodesize); + ret = __test_eb_bitmaps(bitmap, eb); out: free_extent_buffer(eb); kfree(bitmap); @@ -592,6 +648,146 @@ out: return ret; } +static void dump_eb_and_memory_contents(struct extent_buffer *eb, void *memory, + const char *test_name) +{ + for (int i = 0; i < eb->len; i++) { + struct page *page = eb->pages[i >> PAGE_SHIFT]; + void *addr = page_address(page) + offset_in_page(i); + + if (memcmp(addr, memory + i, 1) != 0) { + test_err("%s failed", test_name); + test_err("eb and memory diffs at byte %u, eb has 0x%02x memory has 0x%02x", + i, *(u8 *)addr, *(u8 *)(memory + i)); + return; + } + } +} + +static int verify_eb_and_memory(struct extent_buffer *eb, void *memory, + const char *test_name) +{ + for (int i = 0; i < (eb->len >> PAGE_SHIFT); i++) { + void *eb_addr = page_address(eb->pages[i]); + + if (memcmp(memory + (i << PAGE_SHIFT), eb_addr, PAGE_SIZE) != 0) { + dump_eb_and_memory_contents(eb, memory, test_name); + return -EUCLEAN; + } + } + return 0; +} + +/* + * Init both memory and extent buffer contents to the same randomly generated + * contents. + */ +static void init_eb_and_memory(struct extent_buffer *eb, void *memory) +{ + get_random_bytes(memory, eb->len); + write_extent_buffer(eb, memory, 0, eb->len); +} + +static int test_eb_mem_ops(u32 sectorsize, u32 nodesize) +{ + struct btrfs_fs_info *fs_info; + struct extent_buffer *eb = NULL; + void *memory = NULL; + int ret; + + test_msg("running extent buffer memory operation tests"); + + fs_info = btrfs_alloc_dummy_fs_info(nodesize, sectorsize); + if (!fs_info) { + test_std_err(TEST_ALLOC_FS_INFO); + return -ENOMEM; + } + + memory = kvzalloc(nodesize, GFP_KERNEL); + if (!memory) { + test_err("failed to allocate memory"); + ret = -ENOMEM; + goto out; + } + + eb = __alloc_dummy_extent_buffer(fs_info, SZ_1M, nodesize); + if (!eb) { + test_std_err(TEST_ALLOC_EXTENT_BUFFER); + ret = -ENOMEM; + goto out; + } + + init_eb_and_memory(eb, memory); + ret = verify_eb_and_memory(eb, memory, "full eb write"); + if (ret < 0) + goto out; + + memcpy(memory, memory + 16, 16); + memcpy_extent_buffer(eb, 0, 16, 16); + ret = verify_eb_and_memory(eb, memory, "same page non-overlapping memcpy 1"); + if (ret < 0) + goto out; + + memcpy(memory, memory + 2048, 16); + memcpy_extent_buffer(eb, 0, 2048, 16); + ret = verify_eb_and_memory(eb, memory, "same page non-overlapping memcpy 2"); + if (ret < 0) + goto out; + memcpy(memory, memory + 2048, 2048); + memcpy_extent_buffer(eb, 0, 2048, 2048); + ret = verify_eb_and_memory(eb, memory, "same page non-overlapping memcpy 3"); + if (ret < 0) + goto out; + + memmove(memory + 512, memory + 256, 512); + memmove_extent_buffer(eb, 512, 256, 512); + ret = verify_eb_and_memory(eb, memory, "same page overlapping memcpy 1"); + if (ret < 0) + goto out; + + memmove(memory + 2048, memory + 512, 2048); + memmove_extent_buffer(eb, 2048, 512, 2048); + ret = verify_eb_and_memory(eb, memory, "same page overlapping memcpy 2"); + if (ret < 0) + goto out; + memmove(memory + 512, memory + 2048, 2048); + memmove_extent_buffer(eb, 512, 2048, 2048); + ret = verify_eb_and_memory(eb, memory, "same page overlapping memcpy 3"); + if (ret < 0) + goto out; + + if (nodesize > PAGE_SIZE) { + memcpy(memory, memory + 4096 - 128, 256); + memcpy_extent_buffer(eb, 0, 4096 - 128, 256); + ret = verify_eb_and_memory(eb, memory, "cross page non-overlapping memcpy 1"); + if (ret < 0) + goto out; + + memcpy(memory + 4096 - 128, memory + 4096 + 128, 256); + memcpy_extent_buffer(eb, 4096 - 128, 4096 + 128, 256); + ret = verify_eb_and_memory(eb, memory, "cross page non-overlapping memcpy 2"); + if (ret < 0) + goto out; + + memmove(memory + 4096 - 128, memory + 4096 - 64, 256); + memmove_extent_buffer(eb, 4096 - 128, 4096 - 64, 256); + ret = verify_eb_and_memory(eb, memory, "cross page overlapping memcpy 1"); + if (ret < 0) + goto out; + + memmove(memory + 4096 - 64, memory + 4096 - 128, 256); + memmove_extent_buffer(eb, 4096 - 64, 4096 - 128, 256); + ret = verify_eb_and_memory(eb, memory, "cross page overlapping memcpy 2"); + if (ret < 0) + goto out; + } +out: + free_extent_buffer(eb); + kvfree(memory); + btrfs_free_dummy_fs_info(fs_info); + return ret; +} + int btrfs_test_extent_io(u32 sectorsize, u32 nodesize) { int ret; @@ -607,6 +803,10 @@ int btrfs_test_extent_io(u32 sectorsize, u32 nodesize) goto out; ret = test_eb_bitmaps(sectorsize, nodesize); + if (ret) + goto out; + + ret = test_eb_mem_ops(sectorsize, nodesize); out: return ret; } diff --git a/fs/btrfs/tests/extent-map-tests.c b/fs/btrfs/tests/extent-map-tests.c index ed0f36ae5346..29bdd08b241f 100644 --- a/fs/btrfs/tests/extent-map-tests.c +++ b/fs/btrfs/tests/extent-map-tests.c @@ -6,6 +6,7 @@ #include <linux/types.h> #include "btrfs-tests.h" #include "../ctree.h" +#include "../btrfs_inode.h" #include "../volumes.h" #include "../disk-io.h" #include "../block-group.h" @@ -442,6 +443,406 @@ static int test_case_4(struct btrfs_fs_info *fs_info, return ret; } +static int add_compressed_extent(struct extent_map_tree *em_tree, + u64 start, u64 len, u64 block_start) +{ + struct extent_map *em; + int ret; + + em = alloc_extent_map(); + if (!em) { + test_std_err(TEST_ALLOC_EXTENT_MAP); + return -ENOMEM; + } + + em->start = start; + em->len = len; + em->block_start = block_start; + em->block_len = SZ_4K; + set_bit(EXTENT_FLAG_COMPRESSED, &em->flags); + write_lock(&em_tree->lock); + ret = add_extent_mapping(em_tree, em, 0); + write_unlock(&em_tree->lock); + free_extent_map(em); + if (ret < 0) { + test_err("cannot add extent map [%llu, %llu)", start, start + len); + return ret; + } + + return 0; +} + +struct extent_range { + u64 start; + u64 len; +}; + +/* The valid states of the tree after every drop, as described below. */ +struct extent_range valid_ranges[][7] = { + { + { .start = 0, .len = SZ_8K }, /* [0, 8K) */ + { .start = SZ_4K * 3, .len = SZ_4K * 3}, /* [12k, 24k) */ + { .start = SZ_4K * 6, .len = SZ_4K * 3}, /* [24k, 36k) */ + { .start = SZ_32K + SZ_4K, .len = SZ_4K}, /* [36k, 40k) */ + { .start = SZ_4K * 10, .len = SZ_4K * 6}, /* [40k, 64k) */ + }, + { + { .start = 0, .len = SZ_8K }, /* [0, 8K) */ + { .start = SZ_4K * 5, .len = SZ_4K}, /* [20k, 24k) */ + { .start = SZ_4K * 6, .len = SZ_4K * 3}, /* [24k, 36k) */ + { .start = SZ_32K + SZ_4K, .len = SZ_4K}, /* [36k, 40k) */ + { .start = SZ_4K * 10, .len = SZ_4K * 6}, /* [40k, 64k) */ + }, + { + { .start = 0, .len = SZ_8K }, /* [0, 8K) */ + { .start = SZ_4K * 5, .len = SZ_4K}, /* [20k, 24k) */ + { .start = SZ_4K * 6, .len = SZ_4K}, /* [24k, 28k) */ + { .start = SZ_32K, .len = SZ_4K}, /* [32k, 36k) */ + { .start = SZ_32K + SZ_4K, .len = SZ_4K}, /* [36k, 40k) */ + { .start = SZ_4K * 10, .len = SZ_4K * 6}, /* [40k, 64k) */ + }, + { + { .start = 0, .len = SZ_8K}, /* [0, 8K) */ + { .start = SZ_4K * 5, .len = SZ_4K}, /* [20k, 24k) */ + { .start = SZ_4K * 6, .len = SZ_4K}, /* [24k, 28k) */ + } +}; + +static int validate_range(struct extent_map_tree *em_tree, int index) +{ + struct rb_node *n; + int i; + + for (i = 0, n = rb_first_cached(&em_tree->map); + valid_ranges[index][i].len && n; + i++, n = rb_next(n)) { + struct extent_map *entry = rb_entry(n, struct extent_map, rb_node); + + if (entry->start != valid_ranges[index][i].start) { + test_err("mapping has start %llu expected %llu", + entry->start, valid_ranges[index][i].start); + return -EINVAL; + } + + if (entry->len != valid_ranges[index][i].len) { + test_err("mapping has len %llu expected %llu", + entry->len, valid_ranges[index][i].len); + return -EINVAL; + } + } + + /* + * We exited because we don't have any more entries in the extent_map + * but we still expect more valid entries. + */ + if (valid_ranges[index][i].len) { + test_err("missing an entry"); + return -EINVAL; + } + + /* We exited the loop but still have entries in the extent map. */ + if (n) { + test_err("we have a left over entry in the extent map we didn't expect"); + return -EINVAL; + } + + return 0; +} + +/* + * Test scenario: + * + * Test the various edge cases of btrfs_drop_extent_map_range, create the + * following ranges + * + * [0, 12k)[12k, 24k)[24k, 36k)[36k, 40k)[40k,64k) + * + * And then we'll drop: + * + * [8k, 12k) - test the single front split + * [12k, 20k) - test the single back split + * [28k, 32k) - test the double split + * [32k, 64k) - test whole em dropping + * + * They'll have the EXTENT_FLAG_COMPRESSED flag set to keep the em tree from + * merging the em's. + */ +static int test_case_5(void) +{ + struct extent_map_tree *em_tree; + struct inode *inode; + u64 start, end; + int ret; + + test_msg("Running btrfs_drop_extent_map_range tests"); + + inode = btrfs_new_test_inode(); + if (!inode) { + test_std_err(TEST_ALLOC_INODE); + return -ENOMEM; + } + + em_tree = &BTRFS_I(inode)->extent_tree; + + /* [0, 12k) */ + ret = add_compressed_extent(em_tree, 0, SZ_4K * 3, 0); + if (ret) { + test_err("cannot add extent range [0, 12K)"); + goto out; + } + + /* [12k, 24k) */ + ret = add_compressed_extent(em_tree, SZ_4K * 3, SZ_4K * 3, SZ_4K); + if (ret) { + test_err("cannot add extent range [12k, 24k)"); + goto out; + } + + /* [24k, 36k) */ + ret = add_compressed_extent(em_tree, SZ_4K * 6, SZ_4K * 3, SZ_8K); + if (ret) { + test_err("cannot add extent range [12k, 24k)"); + goto out; + } + + /* [36k, 40k) */ + ret = add_compressed_extent(em_tree, SZ_32K + SZ_4K, SZ_4K, SZ_4K * 3); + if (ret) { + test_err("cannot add extent range [12k, 24k)"); + goto out; + } + + /* [40k, 64k) */ + ret = add_compressed_extent(em_tree, SZ_4K * 10, SZ_4K * 6, SZ_16K); + if (ret) { + test_err("cannot add extent range [12k, 24k)"); + goto out; + } + + /* Drop [8k, 12k) */ + start = SZ_8K; + end = (3 * SZ_4K) - 1; + btrfs_drop_extent_map_range(BTRFS_I(inode), start, end, false); + ret = validate_range(&BTRFS_I(inode)->extent_tree, 0); + if (ret) + goto out; + + /* Drop [12k, 20k) */ + start = SZ_4K * 3; + end = SZ_16K + SZ_4K - 1; + btrfs_drop_extent_map_range(BTRFS_I(inode), start, end, false); + ret = validate_range(&BTRFS_I(inode)->extent_tree, 1); + if (ret) + goto out; + + /* Drop [28k, 32k) */ + start = SZ_32K - SZ_4K; + end = SZ_32K - 1; + btrfs_drop_extent_map_range(BTRFS_I(inode), start, end, false); + ret = validate_range(&BTRFS_I(inode)->extent_tree, 2); + if (ret) + goto out; + + /* Drop [32k, 64k) */ + start = SZ_32K; + end = SZ_64K - 1; + btrfs_drop_extent_map_range(BTRFS_I(inode), start, end, false); + ret = validate_range(&BTRFS_I(inode)->extent_tree, 3); + if (ret) + goto out; +out: + iput(inode); + return ret; +} + +/* + * Test the btrfs_add_extent_mapping helper which will attempt to create an em + * for areas between two existing ems. Validate it doesn't do this when there + * are two unmerged em's side by side. + */ +static int test_case_6(struct btrfs_fs_info *fs_info, struct extent_map_tree *em_tree) +{ + struct extent_map *em = NULL; + int ret; + + ret = add_compressed_extent(em_tree, 0, SZ_4K, 0); + if (ret) + goto out; + + ret = add_compressed_extent(em_tree, SZ_4K, SZ_4K, 0); + if (ret) + goto out; + + em = alloc_extent_map(); + if (!em) { + test_std_err(TEST_ALLOC_EXTENT_MAP); + return -ENOMEM; + } + + em->start = SZ_4K; + em->len = SZ_4K; + em->block_start = SZ_16K; + em->block_len = SZ_16K; + write_lock(&em_tree->lock); + ret = btrfs_add_extent_mapping(fs_info, em_tree, &em, 0, SZ_8K); + write_unlock(&em_tree->lock); + + if (ret != 0) { + test_err("got an error when adding our em: %d", ret); + goto out; + } + + ret = -EINVAL; + if (em->start != 0) { + test_err("unexpected em->start at %llu, wanted 0", em->start); + goto out; + } + if (em->len != SZ_4K) { + test_err("unexpected em->len %llu, expected 4K", em->len); + goto out; + } + ret = 0; +out: + free_extent_map(em); + free_extent_map_tree(em_tree); + return ret; +} + +/* + * Regression test for btrfs_drop_extent_map_range. Calling with skip_pinned == + * true would mess up the start/end calculations and subsequent splits would be + * incorrect. + */ +static int test_case_7(void) +{ + struct extent_map_tree *em_tree; + struct extent_map *em; + struct inode *inode; + int ret; + + test_msg("Running btrfs_drop_extent_cache with pinned"); + + inode = btrfs_new_test_inode(); + if (!inode) { + test_std_err(TEST_ALLOC_INODE); + return -ENOMEM; + } + + em_tree = &BTRFS_I(inode)->extent_tree; + + em = alloc_extent_map(); + if (!em) { + test_std_err(TEST_ALLOC_EXTENT_MAP); + ret = -ENOMEM; + goto out; + } + + /* [0, 16K), pinned */ + em->start = 0; + em->len = SZ_16K; + em->block_start = 0; + em->block_len = SZ_4K; + set_bit(EXTENT_FLAG_PINNED, &em->flags); + write_lock(&em_tree->lock); + ret = add_extent_mapping(em_tree, em, 0); + write_unlock(&em_tree->lock); + if (ret < 0) { + test_err("couldn't add extent map"); + goto out; + } + free_extent_map(em); + + em = alloc_extent_map(); + if (!em) { + test_std_err(TEST_ALLOC_EXTENT_MAP); + ret = -ENOMEM; + goto out; + } + + /* [32K, 48K), not pinned */ + em->start = SZ_32K; + em->len = SZ_16K; + em->block_start = SZ_32K; + em->block_len = SZ_16K; + write_lock(&em_tree->lock); + ret = add_extent_mapping(em_tree, em, 0); + write_unlock(&em_tree->lock); + if (ret < 0) { + test_err("couldn't add extent map"); + goto out; + } + free_extent_map(em); + + /* + * Drop [0, 36K) This should skip the [0, 4K) extent and then split the + * [32K, 48K) extent. + */ + btrfs_drop_extent_map_range(BTRFS_I(inode), 0, (36 * SZ_1K) - 1, true); + + /* Make sure our extent maps look sane. */ + ret = -EINVAL; + + em = lookup_extent_mapping(em_tree, 0, SZ_16K); + if (!em) { + test_err("didn't find an em at 0 as expected"); + goto out; + } + + if (em->start != 0) { + test_err("em->start is %llu, expected 0", em->start); + goto out; + } + + if (em->len != SZ_16K) { + test_err("em->len is %llu, expected 16K", em->len); + goto out; + } + + free_extent_map(em); + + read_lock(&em_tree->lock); + em = lookup_extent_mapping(em_tree, SZ_16K, SZ_16K); + read_unlock(&em_tree->lock); + if (em) { + test_err("found an em when we weren't expecting one"); + goto out; + } + + read_lock(&em_tree->lock); + em = lookup_extent_mapping(em_tree, SZ_32K, SZ_16K); + read_unlock(&em_tree->lock); + if (!em) { + test_err("didn't find an em at 32K as expected"); + goto out; + } + + if (em->start != (36 * SZ_1K)) { + test_err("em->start is %llu, expected 36K", em->start); + goto out; + } + + if (em->len != (12 * SZ_1K)) { + test_err("em->len is %llu, expected 12K", em->len); + goto out; + } + + free_extent_map(em); + + read_lock(&em_tree->lock); + em = lookup_extent_mapping(em_tree, 48 * SZ_1K, (u64)-1); + read_unlock(&em_tree->lock); + if (em) { + test_err("found an unexpected em above 48K"); + goto out; + } + + ret = 0; +out: + free_extent_map(em); + iput(inode); + return ret; +} + struct rmap_test_vector { u64 raid_type; u64 physical_start; @@ -619,6 +1020,17 @@ int btrfs_test_extent_map(void) if (ret) goto out; ret = test_case_4(fs_info, em_tree); + if (ret) + goto out; + ret = test_case_5(); + if (ret) + goto out; + ret = test_case_6(fs_info, em_tree); + if (ret) + goto out; + ret = test_case_7(); + if (ret) + goto out; test_msg("running rmap tests"); for (i = 0; i < ARRAY_SIZE(rmap_tests); i++) { diff --git a/fs/btrfs/transaction.c b/fs/btrfs/transaction.c index 91b6c2fdc420..874e4394df86 100644 --- a/fs/btrfs/transaction.c +++ b/fs/btrfs/transaction.c @@ -292,10 +292,11 @@ loop: spin_unlock(&fs_info->trans_lock); /* - * If we are ATTACH, we just want to catch the current transaction, - * and commit it. If there is no transaction, just return ENOENT. + * If we are ATTACH or TRANS_JOIN_NOSTART, we just want to catch the + * current transaction, and commit it. If there is no transaction, just + * return ENOENT. */ - if (type == TRANS_ATTACH) + if (type == TRANS_ATTACH || type == TRANS_JOIN_NOSTART) return -ENOENT; /* @@ -591,8 +592,13 @@ start_transaction(struct btrfs_root *root, unsigned int num_items, u64 delayed_refs_bytes = 0; qgroup_reserved = num_items * fs_info->nodesize; - ret = btrfs_qgroup_reserve_meta_pertrans(root, qgroup_reserved, - enforce_qgroups); + /* + * Use prealloc for now, as there might be a currently running + * transaction that could free this reserved space prematurely + * by committing. + */ + ret = btrfs_qgroup_reserve_meta_prealloc(root, qgroup_reserved, + enforce_qgroups, false); if (ret) return ERR_PTR(ret); @@ -705,6 +711,14 @@ again: h->reloc_reserved = reloc_reserved; } + /* + * Now that we have found a transaction to be a part of, convert the + * qgroup reservation from prealloc to pertrans. A different transaction + * can't race in and free our pertrans out from under us. + */ + if (qgroup_reserved) + btrfs_qgroup_convert_reserved_meta(root, qgroup_reserved); + got_it: if (!current->journal_info) current->journal_info = h; @@ -752,7 +766,7 @@ alloc_fail: btrfs_block_rsv_release(fs_info, &fs_info->trans_block_rsv, num_bytes, NULL); reserve_fail: - btrfs_qgroup_free_meta_pertrans(root, qgroup_reserved); + btrfs_qgroup_free_meta_prealloc(root, qgroup_reserved); return ERR_PTR(ret); } @@ -785,7 +799,10 @@ struct btrfs_trans_handle *btrfs_join_transaction_spacecache(struct btrfs_root * /* * Similar to regular join but it never starts a transaction when none is - * running or after waiting for the current one to finish. + * running or when there's a running one at a state >= TRANS_STATE_UNBLOCKED. + * This is similar to btrfs_attach_transaction() but it allows the join to + * happen if the transaction commit already started but it's not yet in the + * "doing" phase (the state is < TRANS_STATE_COMMIT_DOING). */ struct btrfs_trans_handle *btrfs_join_transaction_nostart(struct btrfs_root *root) { @@ -1060,8 +1077,8 @@ int btrfs_write_marked_extents(struct btrfs_fs_info *fs_info, u64 start = 0; u64 end; - while (!find_first_extent_bit(dirty_pages, start, &start, &end, - mark, &cached_state)) { + while (find_first_extent_bit(dirty_pages, start, &start, &end, + mark, &cached_state)) { bool wait_writeback = false; err = convert_extent_bit(dirty_pages, start, end, @@ -1114,8 +1131,8 @@ static int __btrfs_wait_marked_extents(struct btrfs_fs_info *fs_info, u64 start = 0; u64 end; - while (!find_first_extent_bit(dirty_pages, start, &start, &end, - EXTENT_NEED_WAIT, &cached_state)) { + while (find_first_extent_bit(dirty_pages, start, &start, &end, + EXTENT_NEED_WAIT, &cached_state)) { /* * Ignore -ENOMEM errors returned by clear_extent_bit(). * When committing the transaction, we'll remove any entries @@ -1837,8 +1854,7 @@ static noinline int create_pending_snapshot(struct btrfs_trans_handle *trans, btrfs_i_size_write(BTRFS_I(parent_inode), parent_inode->i_size + fname.disk_name.len * 2); - parent_inode->i_mtime = current_time(parent_inode); - parent_inode->i_ctime = parent_inode->i_mtime; + parent_inode->i_mtime = inode_set_ctime_current(parent_inode); ret = btrfs_update_inode_fallback(trans, parent_root, BTRFS_I(parent_inode)); if (ret) { btrfs_abort_transaction(trans, ret); diff --git a/fs/btrfs/tree-checker.c b/fs/btrfs/tree-checker.c index 038dfa8f1788..ab08a0b01311 100644 --- a/fs/btrfs/tree-checker.c +++ b/fs/btrfs/tree-checker.c @@ -446,6 +446,20 @@ static int check_root_key(struct extent_buffer *leaf, struct btrfs_key *key, btrfs_item_key_to_cpu(leaf, &item_key, slot); is_root_item = (item_key.type == BTRFS_ROOT_ITEM_KEY); + /* + * Bad rootid for reloc trees. + * + * Reloc trees are only for subvolume trees, other trees only need + * to be COWed to be relocated. + */ + if (unlikely(is_root_item && key->objectid == BTRFS_TREE_RELOC_OBJECTID && + !is_fstree(key->offset))) { + generic_err(leaf, slot, + "invalid reloc tree for root %lld, root id is not a subvolume tree", + key->offset); + return -EUCLEAN; + } + /* No such tree id */ if (unlikely(key->objectid == 0)) { if (is_root_item) diff --git a/fs/btrfs/tree-log.c b/fs/btrfs/tree-log.c index 365a1cc0a3c3..d1e46b839519 100644 --- a/fs/btrfs/tree-log.c +++ b/fs/btrfs/tree-log.c @@ -4148,9 +4148,9 @@ static void fill_inode_item(struct btrfs_trans_handle *trans, inode->i_mtime.tv_nsec); btrfs_set_token_timespec_sec(&token, &item->ctime, - inode->i_ctime.tv_sec); + inode_get_ctime(inode).tv_sec); btrfs_set_token_timespec_nsec(&token, &item->ctime, - inode->i_ctime.tv_nsec); + inode_get_ctime(inode).tv_nsec); /* * We do not need to set the nbytes field, in fact during a fast fsync @@ -4841,13 +4841,11 @@ static int btrfs_log_changed_extents(struct btrfs_trans_handle *trans, struct btrfs_ordered_extent *ordered; struct btrfs_ordered_extent *tmp; struct extent_map *em, *n; - struct list_head extents; + LIST_HEAD(extents); struct extent_map_tree *tree = &inode->extent_tree; int ret = 0; int num = 0; - INIT_LIST_HEAD(&extents); - write_lock(&tree->lock); list_for_each_entry_safe(em, n, &tree->modified_extents, list) { @@ -6794,8 +6792,8 @@ static int log_new_ancestors(struct btrfs_trans_handle *trans, while (true) { struct btrfs_fs_info *fs_info = root->fs_info; - struct extent_buffer *leaf = path->nodes[0]; - int slot = path->slots[0]; + struct extent_buffer *leaf; + int slot; struct btrfs_key search_key; struct inode *inode; u64 ino; diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c index 2ecb76cf3d91..9621455edebc 100644 --- a/fs/btrfs/volumes.c +++ b/fs/btrfs/volumes.c @@ -681,6 +681,14 @@ error_free_page: return -EINVAL; } +u8 *btrfs_sb_fsid_ptr(struct btrfs_super_block *sb) +{ + bool has_metadata_uuid = (btrfs_super_incompat_flags(sb) & + BTRFS_FEATURE_INCOMPAT_METADATA_UUID); + + return has_metadata_uuid ? sb->metadata_uuid : sb->fsid; +} + /* * Handle scanned device having its CHANGING_FSID_V2 flag set and the fs_devices * being created with a disk that has already completed its fsid change. Such @@ -833,15 +841,8 @@ static noinline struct btrfs_device *device_list_add(const char *path, found_transid > fs_devices->latest_generation) { memcpy(fs_devices->fsid, disk_super->fsid, BTRFS_FSID_SIZE); - - if (has_metadata_uuid) - memcpy(fs_devices->metadata_uuid, - disk_super->metadata_uuid, - BTRFS_FSID_SIZE); - else - memcpy(fs_devices->metadata_uuid, - disk_super->fsid, BTRFS_FSID_SIZE); - + memcpy(fs_devices->metadata_uuid, + btrfs_sb_fsid_ptr(disk_super), BTRFS_FSID_SIZE); fs_devices->fsid_change = false; } } @@ -851,8 +852,9 @@ static noinline struct btrfs_device *device_list_add(const char *path, if (fs_devices->opened) { btrfs_err(NULL, - "device %s belongs to fsid %pU, and the fs is already mounted", - path, fs_devices->fsid); +"device %s belongs to fsid %pU, and the fs is already mounted, scanned by %s (%d)", + path, fs_devices->fsid, current->comm, + task_pid_nr(current)); mutex_unlock(&fs_devices->device_list_mutex); return ERR_PTR(-EBUSY); } @@ -1424,9 +1426,9 @@ static bool contains_pending_extent(struct btrfs_device *device, u64 *start, lockdep_assert_held(&device->fs_info->chunk_mutex); - if (!find_first_extent_bit(&device->alloc_state, *start, - &physical_start, &physical_end, - CHUNK_ALLOCATED, NULL)) { + if (find_first_extent_bit(&device->alloc_state, *start, + &physical_start, &physical_end, + CHUNK_ALLOCATED, NULL)) { if (in_range(physical_start, *start, len) || in_range(*start, physical_start, @@ -1438,18 +1440,18 @@ static bool contains_pending_extent(struct btrfs_device *device, u64 *start, return false; } -static u64 dev_extent_search_start(struct btrfs_device *device, u64 start) +static u64 dev_extent_search_start(struct btrfs_device *device) { switch (device->fs_devices->chunk_alloc_policy) { case BTRFS_CHUNK_ALLOC_REGULAR: - return max_t(u64, start, BTRFS_DEVICE_RANGE_RESERVED); + return BTRFS_DEVICE_RANGE_RESERVED; case BTRFS_CHUNK_ALLOC_ZONED: /* * We don't care about the starting region like regular * allocator, because we anyway use/reserve the first two zones * for superblock logging. */ - return ALIGN(start, device->zone_info->zone_size); + return 0; default: BUG(); } @@ -1581,15 +1583,15 @@ static bool dev_extent_hole_check(struct btrfs_device *device, u64 *hole_start, * correct usable device space, as device extent freed in current transaction * is not reported as available. */ -static int find_free_dev_extent_start(struct btrfs_device *device, - u64 num_bytes, u64 search_start, u64 *start, - u64 *len) +static int find_free_dev_extent(struct btrfs_device *device, u64 num_bytes, + u64 *start, u64 *len) { struct btrfs_fs_info *fs_info = device->fs_info; struct btrfs_root *root = fs_info->dev_root; struct btrfs_key key; struct btrfs_dev_extent *dev_extent; struct btrfs_path *path; + u64 search_start; u64 hole_size; u64 max_hole_start; u64 max_hole_size; @@ -1599,7 +1601,7 @@ static int find_free_dev_extent_start(struct btrfs_device *device, int slot; struct extent_buffer *l; - search_start = dev_extent_search_start(device, search_start); + search_start = dev_extent_search_start(device); WARN_ON(device->zone_info && !IS_ALIGNED(num_bytes, device->zone_info->zone_size)); @@ -1725,13 +1727,6 @@ out: return ret; } -int find_free_dev_extent(struct btrfs_device *device, u64 num_bytes, - u64 *start, u64 *len) -{ - /* FIXME use last free of some kind */ - return find_free_dev_extent_start(device, num_bytes, 0, start, len); -} - static int btrfs_free_dev_extent(struct btrfs_trans_handle *trans, struct btrfs_device *device, u64 start, u64 *dev_extent_len) @@ -1917,15 +1912,13 @@ out: static void update_dev_time(const char *device_path) { struct path path; - struct timespec64 now; int ret; ret = kern_path(device_path, LOOKUP_FOLLOW, &path); if (ret) return; - now = current_time(d_inode(path.dentry)); - inode_update_time(d_inode(path.dentry), &now, S_MTIME | S_CTIME | S_VERSION); + inode_update_time(d_inode(path.dentry), S_MTIME | S_CTIME | S_VERSION); path_put(&path); } @@ -4638,8 +4631,7 @@ int btrfs_cancel_balance(struct btrfs_fs_info *fs_info) } } - BUG_ON(fs_info->balance_ctl || - test_bit(BTRFS_FS_BALANCE_RUNNING, &fs_info->flags)); + ASSERT(!test_bit(BTRFS_FS_BALANCE_RUNNING, &fs_info->flags)); atomic_dec(&fs_info->balance_cancel_req); mutex_unlock(&fs_info->balance_mutex); return 0; @@ -6220,6 +6212,45 @@ static void set_io_stripe(struct btrfs_io_stripe *dst, const struct map_lookup * stripe_offset + btrfs_stripe_nr_to_offset(stripe_nr); } +/* + * Map one logical range to one or more physical ranges. + * + * @length: (Mandatory) mapped length of this run. + * One logical range can be split into different segments + * due to factors like zones and RAID0/5/6/10 stripe + * boundaries. + * + * @bioc_ret: (Mandatory) returned btrfs_io_context structure. + * which has one or more physical ranges (btrfs_io_stripe) + * recorded inside. + * Caller should call btrfs_put_bioc() to free it after use. + * + * @smap: (Optional) single physical range optimization. + * If the map request can be fulfilled by one single + * physical range, and this is parameter is not NULL, + * then @bioc_ret would be NULL, and @smap would be + * updated. + * + * @mirror_num_ret: (Mandatory) returned mirror number if the original + * value is 0. + * + * Mirror number 0 means to choose any live mirrors. + * + * For non-RAID56 profiles, non-zero mirror_num means + * the Nth mirror. (e.g. mirror_num 1 means the first + * copy). + * + * For RAID56 profile, mirror 1 means rebuild from P and + * the remaining data stripes. + * + * For RAID6 profile, mirror > 2 means mark another + * data/P stripe error and rebuild from the remaining + * stripes.. + * + * @need_raid_map: (Used only for integrity checker) whether the map wants + * a full stripe map (including all data and P/Q stripes) + * for RAID56. Should always be 1 except integrity checker. + */ int btrfs_map_block(struct btrfs_fs_info *fs_info, enum btrfs_map_op op, u64 logical, u64 *length, struct btrfs_io_context **bioc_ret, @@ -6394,9 +6425,7 @@ int btrfs_map_block(struct btrfs_fs_info *fs_info, enum btrfs_map_op op, * I/O context structure. */ if (smap && num_alloc_stripes == 1 && - !((map->type & BTRFS_BLOCK_GROUP_RAID56_MASK) && mirror_num > 1) && - (op == BTRFS_MAP_READ || !dev_replace_is_ongoing || - !dev_replace->tgtdev)) { + !((map->type & BTRFS_BLOCK_GROUP_RAID56_MASK) && mirror_num > 1)) { set_io_stripe(smap, map, stripe_index, stripe_offset, stripe_nr); if (mirror_num_ret) *mirror_num_ret = mirror_num; diff --git a/fs/btrfs/volumes.h b/fs/btrfs/volumes.h index b8c51f16ba86..2128a032c3b7 100644 --- a/fs/btrfs/volumes.h +++ b/fs/btrfs/volumes.h @@ -650,8 +650,6 @@ int btrfs_cancel_balance(struct btrfs_fs_info *fs_info); int btrfs_create_uuid_tree(struct btrfs_fs_info *fs_info); int btrfs_uuid_scan_kthread(void *data); bool btrfs_chunk_writeable(struct btrfs_fs_info *fs_info, u64 chunk_offset); -int find_free_dev_extent(struct btrfs_device *device, u64 num_bytes, - u64 *start, u64 *max_avail); void btrfs_dev_stat_inc_and_print(struct btrfs_device *dev, int index); int btrfs_get_dev_stats(struct btrfs_fs_info *fs_info, struct btrfs_ioctl_get_dev_stats *stats); @@ -749,5 +747,6 @@ int btrfs_verify_dev_extents(struct btrfs_fs_info *fs_info); bool btrfs_repair_one_zone(struct btrfs_fs_info *fs_info, u64 logical); bool btrfs_pinned_by_swapfile(struct btrfs_fs_info *fs_info, void *ptr); +u8 *btrfs_sb_fsid_ptr(struct btrfs_super_block *sb); #endif diff --git a/fs/btrfs/xattr.c b/fs/btrfs/xattr.c index fc4b20c2688a..96828a13dd43 100644 --- a/fs/btrfs/xattr.c +++ b/fs/btrfs/xattr.c @@ -264,7 +264,7 @@ int btrfs_setxattr_trans(struct inode *inode, const char *name, goto out; inode_inc_iversion(inode); - inode->i_ctime = current_time(inode); + inode_set_ctime_current(inode); ret = btrfs_update_inode(trans, root, BTRFS_I(inode)); if (ret) btrfs_abort_transaction(trans, ret); @@ -407,7 +407,7 @@ static int btrfs_xattr_handler_set_prop(const struct xattr_handler *handler, ret = btrfs_set_prop(trans, inode, name, value, size, flags); if (!ret) { inode_inc_iversion(inode); - inode->i_ctime = current_time(inode); + inode_set_ctime_current(inode); ret = btrfs_update_inode(trans, root, BTRFS_I(inode)); if (ret) btrfs_abort_transaction(trans, ret); diff --git a/fs/btrfs/zoned.c b/fs/btrfs/zoned.c index 72b90bc19a19..09bc325d075d 100644 --- a/fs/btrfs/zoned.c +++ b/fs/btrfs/zoned.c @@ -65,6 +65,9 @@ #define SUPER_INFO_SECTORS ((u64)BTRFS_SUPER_INFO_SIZE >> SECTOR_SHIFT) +static void wait_eb_writebacks(struct btrfs_block_group *block_group); +static int do_zone_finish(struct btrfs_block_group *block_group, bool fully_written); + static inline bool sb_zone_is_full(const struct blk_zone *zone) { return (zone->cond == BLK_ZONE_COND_FULL) || @@ -465,8 +468,8 @@ int btrfs_get_dev_zone_info(struct btrfs_device *device, bool populate_cache) * use the cache. */ if (populate_cache && bdev_is_zoned(device->bdev)) { - zone_info->zone_cache = vzalloc(sizeof(struct blk_zone) * - zone_info->nr_zones); + zone_info->zone_cache = vcalloc(zone_info->nr_zones, + sizeof(struct blk_zone)); if (!zone_info->zone_cache) { btrfs_err_in_rcu(device->fs_info, "zoned: failed to allocate zone cache for %s", @@ -1583,19 +1586,9 @@ void btrfs_calc_zone_unusable(struct btrfs_block_group *cache) return; WARN_ON(cache->bytes_super != 0); - - /* Check for block groups never get activated */ - if (test_bit(BTRFS_FS_ACTIVE_ZONE_TRACKING, &cache->fs_info->flags) && - cache->flags & (BTRFS_BLOCK_GROUP_METADATA | BTRFS_BLOCK_GROUP_SYSTEM) && - !test_bit(BLOCK_GROUP_FLAG_ZONE_IS_ACTIVE, &cache->runtime_flags) && - cache->alloc_offset == 0) { - unusable = cache->length; - free = 0; - } else { - unusable = (cache->alloc_offset - cache->used) + - (cache->length - cache->zone_capacity); - free = cache->zone_capacity - cache->alloc_offset; - } + unusable = (cache->alloc_offset - cache->used) + + (cache->length - cache->zone_capacity); + free = cache->zone_capacity - cache->alloc_offset; /* We only need ->free_space in ALLOC_SEQ block groups */ cache->cached = BTRFS_CACHE_FINISHED; @@ -1707,10 +1700,21 @@ void btrfs_finish_ordered_zoned(struct btrfs_ordered_extent *ordered) { struct btrfs_inode *inode = BTRFS_I(ordered->inode); struct btrfs_fs_info *fs_info = inode->root->fs_info; - struct btrfs_ordered_sum *sum = - list_first_entry(&ordered->list, typeof(*sum), list); - u64 logical = sum->logical; - u64 len = sum->len; + struct btrfs_ordered_sum *sum; + u64 logical, len; + + /* + * Write to pre-allocated region is for the data relocation, and so + * it should use WRITE operation. No split/rewrite are necessary. + */ + if (test_bit(BTRFS_ORDERED_PREALLOC, &ordered->flags)) + return; + + ASSERT(!list_empty(&ordered->list)); + /* The ordered->list can be empty in the above pre-alloc case. */ + sum = list_first_entry(&ordered->list, struct btrfs_ordered_sum, list); + logical = sum->logical; + len = sum->len; while (len < ordered->disk_num_bytes) { sum = list_next_entry(sum, list); @@ -1747,41 +1751,121 @@ out: } } -bool btrfs_check_meta_write_pointer(struct btrfs_fs_info *fs_info, - struct extent_buffer *eb, - struct btrfs_block_group **cache_ret) +static bool check_bg_is_active(struct btrfs_eb_write_context *ctx, + struct btrfs_block_group **active_bg) { - struct btrfs_block_group *cache; - bool ret = true; + const struct writeback_control *wbc = ctx->wbc; + struct btrfs_block_group *block_group = ctx->zoned_bg; + struct btrfs_fs_info *fs_info = block_group->fs_info; - if (!btrfs_is_zoned(fs_info)) + if (test_bit(BLOCK_GROUP_FLAG_ZONE_IS_ACTIVE, &block_group->runtime_flags)) return true; - cache = btrfs_lookup_block_group(fs_info, eb->start); - if (!cache) - return true; + if (fs_info->treelog_bg == block_group->start) { + if (!btrfs_zone_activate(block_group)) { + int ret_fin = btrfs_zone_finish_one_bg(fs_info); - if (cache->meta_write_pointer != eb->start) { - btrfs_put_block_group(cache); - cache = NULL; - ret = false; - } else { - cache->meta_write_pointer = eb->start + eb->len; - } + if (ret_fin != 1 || !btrfs_zone_activate(block_group)) + return false; + } + } else if (*active_bg != block_group) { + struct btrfs_block_group *tgt = *active_bg; - *cache_ret = cache; + /* zoned_meta_io_lock protects fs_info->active_{meta,system}_bg. */ + lockdep_assert_held(&fs_info->zoned_meta_io_lock); - return ret; + if (tgt) { + /* + * If there is an unsent IO left in the allocated area, + * we cannot wait for them as it may cause a deadlock. + */ + if (tgt->meta_write_pointer < tgt->start + tgt->alloc_offset) { + if (wbc->sync_mode == WB_SYNC_NONE || + (wbc->sync_mode == WB_SYNC_ALL && !wbc->for_sync)) + return false; + } + + /* Pivot active metadata/system block group. */ + btrfs_zoned_meta_io_unlock(fs_info); + wait_eb_writebacks(tgt); + do_zone_finish(tgt, true); + btrfs_zoned_meta_io_lock(fs_info); + if (*active_bg == tgt) { + btrfs_put_block_group(tgt); + *active_bg = NULL; + } + } + if (!btrfs_zone_activate(block_group)) + return false; + if (*active_bg != block_group) { + ASSERT(*active_bg == NULL); + *active_bg = block_group; + btrfs_get_block_group(block_group); + } + } + + return true; } -void btrfs_revert_meta_write_pointer(struct btrfs_block_group *cache, - struct extent_buffer *eb) +/* + * Check if @ctx->eb is aligned to the write pointer. + * + * Return: + * 0: @ctx->eb is at the write pointer. You can write it. + * -EAGAIN: There is a hole. The caller should handle the case. + * -EBUSY: There is a hole, but the caller can just bail out. + */ +int btrfs_check_meta_write_pointer(struct btrfs_fs_info *fs_info, + struct btrfs_eb_write_context *ctx) { - if (!btrfs_is_zoned(eb->fs_info) || !cache) - return; + const struct writeback_control *wbc = ctx->wbc; + const struct extent_buffer *eb = ctx->eb; + struct btrfs_block_group *block_group = ctx->zoned_bg; + + if (!btrfs_is_zoned(fs_info)) + return 0; + + if (block_group) { + if (block_group->start > eb->start || + block_group->start + block_group->length <= eb->start) { + btrfs_put_block_group(block_group); + block_group = NULL; + ctx->zoned_bg = NULL; + } + } + + if (!block_group) { + block_group = btrfs_lookup_block_group(fs_info, eb->start); + if (!block_group) + return 0; + ctx->zoned_bg = block_group; + } + + if (block_group->meta_write_pointer == eb->start) { + struct btrfs_block_group **tgt; + + if (!test_bit(BTRFS_FS_ACTIVE_ZONE_TRACKING, &fs_info->flags)) + return 0; - ASSERT(cache->meta_write_pointer == eb->start + eb->len); - cache->meta_write_pointer = eb->start; + if (block_group->flags & BTRFS_BLOCK_GROUP_SYSTEM) + tgt = &fs_info->active_system_bg; + else + tgt = &fs_info->active_meta_bg; + if (check_bg_is_active(ctx, tgt)) + return 0; + } + + /* + * Since we may release fs_info->zoned_meta_io_lock, someone can already + * start writing this eb. In that case, we can just bail out. + */ + if (block_group->meta_write_pointer > eb->start) + return -EBUSY; + + /* If for_sync, this hole will be filled with trasnsaction commit. */ + if (wbc->sync_mode == WB_SYNC_ALL && !wbc->for_sync) + return -EAGAIN; + return -EBUSY; } int btrfs_zoned_issue_zeroout(struct btrfs_device *device, u64 physical, u64 length) @@ -1879,10 +1963,10 @@ int btrfs_sync_zone_write_pointer(struct btrfs_device *tgt_dev, u64 logical, bool btrfs_zone_activate(struct btrfs_block_group *block_group) { struct btrfs_fs_info *fs_info = block_group->fs_info; - struct btrfs_space_info *space_info = block_group->space_info; struct map_lookup *map; struct btrfs_device *device; u64 physical; + const bool is_data = (block_group->flags & BTRFS_BLOCK_GROUP_DATA); bool ret; int i; @@ -1891,7 +1975,6 @@ bool btrfs_zone_activate(struct btrfs_block_group *block_group) map = block_group->physical_map; - spin_lock(&space_info->lock); spin_lock(&block_group->lock); if (test_bit(BLOCK_GROUP_FLAG_ZONE_IS_ACTIVE, &block_group->runtime_flags)) { ret = true; @@ -1904,30 +1987,44 @@ bool btrfs_zone_activate(struct btrfs_block_group *block_group) goto out_unlock; } + spin_lock(&fs_info->zone_active_bgs_lock); for (i = 0; i < map->num_stripes; i++) { + struct btrfs_zoned_device_info *zinfo; + int reserved = 0; + device = map->stripes[i].dev; physical = map->stripes[i].physical; + zinfo = device->zone_info; - if (device->zone_info->max_active_zones == 0) + if (zinfo->max_active_zones == 0) continue; + if (is_data) + reserved = zinfo->reserved_active_zones; + /* + * For the data block group, leave active zones for one + * metadata block group and one system block group. + */ + if (atomic_read(&zinfo->active_zones_left) <= reserved) { + ret = false; + spin_unlock(&fs_info->zone_active_bgs_lock); + goto out_unlock; + } + if (!btrfs_dev_set_active_zone(device, physical)) { /* Cannot activate the zone */ ret = false; + spin_unlock(&fs_info->zone_active_bgs_lock); goto out_unlock; } + if (!is_data) + zinfo->reserved_active_zones--; } + spin_unlock(&fs_info->zone_active_bgs_lock); /* Successfully activated all the zones */ set_bit(BLOCK_GROUP_FLAG_ZONE_IS_ACTIVE, &block_group->runtime_flags); - WARN_ON(block_group->alloc_offset != 0); - if (block_group->zone_unusable == block_group->length) { - block_group->zone_unusable = block_group->length - block_group->zone_capacity; - space_info->bytes_zone_unusable -= block_group->zone_capacity; - } spin_unlock(&block_group->lock); - btrfs_try_granting_tickets(fs_info, space_info); - spin_unlock(&space_info->lock); /* For the active block group list */ btrfs_get_block_group(block_group); @@ -1940,7 +2037,6 @@ bool btrfs_zone_activate(struct btrfs_block_group *block_group) out_unlock: spin_unlock(&block_group->lock); - spin_unlock(&space_info->lock); return ret; } @@ -2006,6 +2102,10 @@ static int do_zone_finish(struct btrfs_block_group *block_group, bool fully_writ * and block_group->meta_write_pointer for metadata. */ if (!fully_written) { + if (test_bit(BLOCK_GROUP_FLAG_ZONED_DATA_RELOC, &block_group->runtime_flags)) { + spin_unlock(&block_group->lock); + return -EAGAIN; + } spin_unlock(&block_group->lock); ret = btrfs_inc_block_group_ro(block_group, false); @@ -2034,7 +2134,9 @@ static int do_zone_finish(struct btrfs_block_group *block_group, bool fully_writ return 0; } - if (block_group->reserved) { + if (block_group->reserved || + test_bit(BLOCK_GROUP_FLAG_ZONED_DATA_RELOC, + &block_group->runtime_flags)) { spin_unlock(&block_group->lock); btrfs_dec_block_group_ro(block_group); return -EAGAIN; @@ -2043,6 +2145,9 @@ static int do_zone_finish(struct btrfs_block_group *block_group, bool fully_writ clear_bit(BLOCK_GROUP_FLAG_ZONE_IS_ACTIVE, &block_group->runtime_flags); block_group->alloc_offset = block_group->zone_capacity; + if (block_group->flags & (BTRFS_BLOCK_GROUP_METADATA | BTRFS_BLOCK_GROUP_SYSTEM)) + block_group->meta_write_pointer = block_group->start + + block_group->zone_capacity; block_group->free_space_ctl->free_space = 0; btrfs_clear_treelog_bg(block_group); btrfs_clear_data_reloc_bg(block_group); @@ -2052,18 +2157,21 @@ static int do_zone_finish(struct btrfs_block_group *block_group, bool fully_writ for (i = 0; i < map->num_stripes; i++) { struct btrfs_device *device = map->stripes[i].dev; const u64 physical = map->stripes[i].physical; + struct btrfs_zoned_device_info *zinfo = device->zone_info; - if (device->zone_info->max_active_zones == 0) + if (zinfo->max_active_zones == 0) continue; ret = blkdev_zone_mgmt(device->bdev, REQ_OP_ZONE_FINISH, physical >> SECTOR_SHIFT, - device->zone_info->zone_size >> SECTOR_SHIFT, + zinfo->zone_size >> SECTOR_SHIFT, GFP_NOFS); if (ret) return ret; + if (!(block_group->flags & BTRFS_BLOCK_GROUP_DATA)) + zinfo->reserved_active_zones++; btrfs_dev_clear_active_zone(device, physical); } @@ -2102,8 +2210,10 @@ bool btrfs_can_activate_zone(struct btrfs_fs_devices *fs_devices, u64 flags) /* Check if there is a device with active zones left */ mutex_lock(&fs_info->chunk_mutex); + spin_lock(&fs_info->zone_active_bgs_lock); list_for_each_entry(device, &fs_devices->alloc_list, dev_alloc_list) { struct btrfs_zoned_device_info *zinfo = device->zone_info; + int reserved = 0; if (!device->bdev) continue; @@ -2113,17 +2223,21 @@ bool btrfs_can_activate_zone(struct btrfs_fs_devices *fs_devices, u64 flags) break; } + if (flags & BTRFS_BLOCK_GROUP_DATA) + reserved = zinfo->reserved_active_zones; + switch (flags & BTRFS_BLOCK_GROUP_PROFILE_MASK) { case 0: /* single */ - ret = (atomic_read(&zinfo->active_zones_left) >= 1); + ret = (atomic_read(&zinfo->active_zones_left) >= (1 + reserved)); break; case BTRFS_BLOCK_GROUP_DUP: - ret = (atomic_read(&zinfo->active_zones_left) >= 2); + ret = (atomic_read(&zinfo->active_zones_left) >= (2 + reserved)); break; } if (ret) break; } + spin_unlock(&fs_info->zone_active_bgs_lock); mutex_unlock(&fs_info->chunk_mutex); if (!ret) @@ -2265,7 +2379,10 @@ void btrfs_zoned_release_data_reloc_bg(struct btrfs_fs_info *fs_info, u64 logica /* All relocation extents are written. */ if (block_group->start + block_group->alloc_offset == logical + length) { - /* Now, release this block group for further allocations. */ + /* + * Now, release this block group for further allocations and + * zone finish. + */ clear_bit(BLOCK_GROUP_FLAG_ZONED_DATA_RELOC, &block_group->runtime_flags); } @@ -2289,7 +2406,8 @@ int btrfs_zone_finish_one_bg(struct btrfs_fs_info *fs_info) spin_lock(&block_group->lock); if (block_group->reserved || block_group->alloc_offset == 0 || - (block_group->flags & BTRFS_BLOCK_GROUP_SYSTEM)) { + (block_group->flags & BTRFS_BLOCK_GROUP_SYSTEM) || + test_bit(BLOCK_GROUP_FLAG_ZONED_DATA_RELOC, &block_group->runtime_flags)) { spin_unlock(&block_group->lock); continue; } @@ -2365,3 +2483,55 @@ int btrfs_zoned_activate_one_bg(struct btrfs_fs_info *fs_info, return 0; } + +/* + * Reserve zones for one metadata block group, one tree-log block group, and one + * system block group. + */ +void btrfs_check_active_zone_reservation(struct btrfs_fs_info *fs_info) +{ + struct btrfs_fs_devices *fs_devices = fs_info->fs_devices; + struct btrfs_block_group *block_group; + struct btrfs_device *device; + /* Reserve zones for normal SINGLE metadata and tree-log block group. */ + unsigned int metadata_reserve = 2; + /* Reserve a zone for SINGLE system block group. */ + unsigned int system_reserve = 1; + + if (!test_bit(BTRFS_FS_ACTIVE_ZONE_TRACKING, &fs_info->flags)) + return; + + /* + * This function is called from the mount context. So, there is no + * parallel process touching the bits. No need for read_seqretry(). + */ + if (fs_info->avail_metadata_alloc_bits & BTRFS_BLOCK_GROUP_DUP) + metadata_reserve = 4; + if (fs_info->avail_system_alloc_bits & BTRFS_BLOCK_GROUP_DUP) + system_reserve = 2; + + /* Apply the reservation on all the devices. */ + mutex_lock(&fs_devices->device_list_mutex); + list_for_each_entry(device, &fs_devices->devices, dev_list) { + if (!device->bdev) + continue; + + device->zone_info->reserved_active_zones = + metadata_reserve + system_reserve; + } + mutex_unlock(&fs_devices->device_list_mutex); + + /* Release reservation for currently active block groups. */ + spin_lock(&fs_info->zone_active_bgs_lock); + list_for_each_entry(block_group, &fs_info->zone_active_bgs, active_bg_list) { + struct map_lookup *map = block_group->physical_map; + + if (!(block_group->flags & + (BTRFS_BLOCK_GROUP_METADATA | BTRFS_BLOCK_GROUP_SYSTEM))) + continue; + + for (int i = 0; i < map->num_stripes; i++) + map->stripes[i].dev->zone_info->reserved_active_zones--; + } + spin_unlock(&fs_info->zone_active_bgs_lock); +} diff --git a/fs/btrfs/zoned.h b/fs/btrfs/zoned.h index 27322b926038..b9cec523b778 100644 --- a/fs/btrfs/zoned.h +++ b/fs/btrfs/zoned.h @@ -22,6 +22,11 @@ struct btrfs_zoned_device_info { u8 zone_size_shift; u32 nr_zones; unsigned int max_active_zones; + /* + * Reserved active zones for one metadata and one system block group. + * It can vary per-device depending on the allocation status. + */ + int reserved_active_zones; atomic_t active_zones_left; unsigned long *seq_zones; unsigned long *empty_zones; @@ -58,11 +63,8 @@ void btrfs_redirty_list_add(struct btrfs_transaction *trans, struct extent_buffer *eb); bool btrfs_use_zone_append(struct btrfs_bio *bbio); void btrfs_record_physical_zoned(struct btrfs_bio *bbio); -bool btrfs_check_meta_write_pointer(struct btrfs_fs_info *fs_info, - struct extent_buffer *eb, - struct btrfs_block_group **cache_ret); -void btrfs_revert_meta_write_pointer(struct btrfs_block_group *cache, - struct extent_buffer *eb); +int btrfs_check_meta_write_pointer(struct btrfs_fs_info *fs_info, + struct btrfs_eb_write_context *ctx); int btrfs_zoned_issue_zeroout(struct btrfs_device *device, u64 physical, u64 length); int btrfs_sync_zone_write_pointer(struct btrfs_device *tgt_dev, u64 logical, u64 physical_start, u64 physical_pos); @@ -81,6 +83,7 @@ void btrfs_zoned_release_data_reloc_bg(struct btrfs_fs_info *fs_info, u64 logica int btrfs_zone_finish_one_bg(struct btrfs_fs_info *fs_info); int btrfs_zoned_activate_one_bg(struct btrfs_fs_info *fs_info, struct btrfs_space_info *space_info, bool do_finish); +void btrfs_check_active_zone_reservation(struct btrfs_fs_info *fs_info); #else /* CONFIG_BLK_DEV_ZONED */ static inline int btrfs_get_dev_zone(struct btrfs_device *device, u64 pos, struct blk_zone *zone) @@ -189,17 +192,10 @@ static inline void btrfs_record_physical_zoned(struct btrfs_bio *bbio) { } -static inline bool btrfs_check_meta_write_pointer(struct btrfs_fs_info *fs_info, - struct extent_buffer *eb, - struct btrfs_block_group **cache_ret) -{ - return true; -} - -static inline void btrfs_revert_meta_write_pointer( - struct btrfs_block_group *cache, - struct extent_buffer *eb) +static inline int btrfs_check_meta_write_pointer(struct btrfs_fs_info *fs_info, + struct btrfs_eb_write_context *ctx) { + return 0; } static inline int btrfs_zoned_issue_zeroout(struct btrfs_device *device, @@ -262,6 +258,8 @@ static inline int btrfs_zoned_activate_one_bg(struct btrfs_fs_info *fs_info, return 0; } +static inline void btrfs_check_active_zone_reservation(struct btrfs_fs_info *fs_info) { } + #endif static inline bool btrfs_dev_is_sequential(struct btrfs_device *device, u64 pos) diff --git a/fs/buffer.c b/fs/buffer.c index f0563ebae75f..2379564e5aea 100644 --- a/fs/buffer.c +++ b/fs/buffer.c @@ -49,6 +49,7 @@ #include <trace/events/block.h> #include <linux/fscrypt.h> #include <linux/fsverity.h> +#include <linux/sched/isolation.h> #include "internal.h" @@ -562,12 +563,6 @@ repeat: return err; } -void emergency_thaw_bdev(struct super_block *sb) -{ - while (sb->s_bdev && !thaw_bdev(sb->s_bdev)) - printk(KERN_WARNING "Emergency Thaw on %pg\n", sb->s_bdev); -} - /** * sync_mapping_buffers - write out & wait upon a mapping's "associated" buffers * @mapping: the mapping which wants those buffers written @@ -1225,19 +1220,14 @@ EXPORT_SYMBOL(mark_buffer_dirty); void mark_buffer_write_io_error(struct buffer_head *bh) { - struct super_block *sb; - set_buffer_write_io_error(bh); /* FIXME: do we need to set this in both places? */ if (bh->b_folio && bh->b_folio->mapping) mapping_set_error(bh->b_folio->mapping, -EIO); - if (bh->b_assoc_map) + if (bh->b_assoc_map) { mapping_set_error(bh->b_assoc_map, -EIO); - rcu_read_lock(); - sb = READ_ONCE(bh->b_bdev->bd_super); - if (sb) - errseq_set(&sb->s_wb_err, -EIO); - rcu_read_unlock(); + errseq_set(&bh->b_assoc_map->host->i_sb->s_wb_err, -EIO); + } } EXPORT_SYMBOL(mark_buffer_write_io_error); @@ -1352,7 +1342,7 @@ static void bh_lru_install(struct buffer_head *bh) * failing page migration. * Skip putting upcoming bh into bh_lru until migration is done. */ - if (lru_cache_disabled()) { + if (lru_cache_disabled() || cpu_is_isolated(smp_processor_id())) { bh_lru_unlock(); return; } @@ -1382,6 +1372,10 @@ lookup_bh_lru(struct block_device *bdev, sector_t block, unsigned size) check_irqs_on(); bh_lru_lock(); + if (cpu_is_isolated(smp_processor_id())) { + bh_lru_unlock(); + return NULL; + } for (i = 0; i < BH_LRU_SIZE; i++) { struct buffer_head *bh = __this_cpu_read(bh_lrus.bhs[i]); diff --git a/fs/cachefiles/io.c b/fs/cachefiles/io.c index 175a25fcade8..009d23cd435b 100644 --- a/fs/cachefiles/io.c +++ b/fs/cachefiles/io.c @@ -259,9 +259,7 @@ static void cachefiles_write_complete(struct kiocb *iocb, long ret) _enter("%ld", ret); - /* Tell lockdep we inherited freeze protection from submission thread */ - __sb_writers_acquired(inode->i_sb, SB_FREEZE_WRITE); - __sb_end_write(inode->i_sb, SB_FREEZE_WRITE); + kiocb_end_write(iocb); if (ret < 0) trace_cachefiles_io_error(object, inode, ret, @@ -286,7 +284,6 @@ int __cachefiles_write(struct cachefiles_object *object, { struct cachefiles_cache *cache; struct cachefiles_kiocb *ki; - struct inode *inode; unsigned int old_nofs; ssize_t ret; size_t len = iov_iter_count(iter); @@ -322,19 +319,12 @@ int __cachefiles_write(struct cachefiles_object *object, ki->iocb.ki_complete = cachefiles_write_complete; atomic_long_add(ki->b_writing, &cache->b_writing); - /* Open-code file_start_write here to grab freeze protection, which - * will be released by another thread in aio_complete_rw(). Fool - * lockdep by telling it the lock got released so that it doesn't - * complain about the held lock when we return to userspace. - */ - inode = file_inode(file); - __sb_start_write(inode->i_sb, SB_FREEZE_WRITE); - __sb_writers_release(inode->i_sb, SB_FREEZE_WRITE); + kiocb_start_write(&ki->iocb); get_file(ki->iocb.ki_filp); cachefiles_grab_object(object, cachefiles_obj_get_ioreq); - trace_cachefiles_write(object, inode, ki->iocb.ki_pos, len); + trace_cachefiles_write(object, file_inode(file), ki->iocb.ki_pos, len); old_nofs = memalloc_nofs_save(); ret = cachefiles_inject_write_error(); if (ret == 0) diff --git a/fs/ceph/acl.c b/fs/ceph/acl.c index 6945a938d396..c91b293267d7 100644 --- a/fs/ceph/acl.c +++ b/fs/ceph/acl.c @@ -93,7 +93,7 @@ int ceph_set_acl(struct mnt_idmap *idmap, struct dentry *dentry, char *value = NULL; struct iattr newattrs; struct inode *inode = d_inode(dentry); - struct timespec64 old_ctime = inode->i_ctime; + struct timespec64 old_ctime = inode_get_ctime(inode); umode_t new_mode = inode->i_mode, old_mode = inode->i_mode; if (ceph_snap(inode) != CEPH_NOSNAP) { diff --git a/fs/ceph/caps.c b/fs/ceph/caps.c index e2bb0d0072da..09cd6d334604 100644 --- a/fs/ceph/caps.c +++ b/fs/ceph/caps.c @@ -1400,7 +1400,7 @@ static void __prep_cap(struct cap_msg_args *arg, struct ceph_cap *cap, arg->mtime = inode->i_mtime; arg->atime = inode->i_atime; - arg->ctime = inode->i_ctime; + arg->ctime = inode_get_ctime(inode); arg->btime = ci->i_btime; arg->change_attr = inode_peek_iversion_raw(inode); diff --git a/fs/ceph/dir.c b/fs/ceph/dir.c index 4a2b39d9a61a..bdcffb04513f 100644 --- a/fs/ceph/dir.c +++ b/fs/ceph/dir.c @@ -2019,9 +2019,10 @@ unsigned ceph_dentry_hash(struct inode *dir, struct dentry *dn) } } +WRAP_DIR_ITER(ceph_readdir) // FIXME! const struct file_operations ceph_dir_fops = { .read = ceph_read_dir, - .iterate = ceph_readdir, + .iterate_shared = shared_ceph_readdir, .llseek = ceph_dir_llseek, .open = ceph_open, .release = ceph_release, @@ -2033,7 +2034,7 @@ const struct file_operations ceph_dir_fops = { }; const struct file_operations ceph_snapdir_fops = { - .iterate = ceph_readdir, + .iterate_shared = shared_ceph_readdir, .llseek = ceph_dir_llseek, .open = ceph_open, .release = ceph_release, diff --git a/fs/ceph/inode.c b/fs/ceph/inode.c index 8e5f41d45283..fd05d68e2990 100644 --- a/fs/ceph/inode.c +++ b/fs/ceph/inode.c @@ -100,7 +100,7 @@ struct inode *ceph_get_snapdir(struct inode *parent) inode->i_uid = parent->i_uid; inode->i_gid = parent->i_gid; inode->i_mtime = parent->i_mtime; - inode->i_ctime = parent->i_ctime; + inode_set_ctime_to_ts(inode, inode_get_ctime(parent)); inode->i_atime = parent->i_atime; ci->i_rbytes = 0; ci->i_btime = ceph_inode(parent)->i_btime; @@ -688,6 +688,7 @@ void ceph_fill_file_time(struct inode *inode, int issued, struct timespec64 *mtime, struct timespec64 *atime) { struct ceph_inode_info *ci = ceph_inode(inode); + struct timespec64 ictime = inode_get_ctime(inode); int warn = 0; if (issued & (CEPH_CAP_FILE_EXCL| @@ -696,11 +697,11 @@ void ceph_fill_file_time(struct inode *inode, int issued, CEPH_CAP_AUTH_EXCL| CEPH_CAP_XATTR_EXCL)) { if (ci->i_version == 0 || - timespec64_compare(ctime, &inode->i_ctime) > 0) { + timespec64_compare(ctime, &ictime) > 0) { dout("ctime %lld.%09ld -> %lld.%09ld inc w/ cap\n", - inode->i_ctime.tv_sec, inode->i_ctime.tv_nsec, + ictime.tv_sec, ictime.tv_nsec, ctime->tv_sec, ctime->tv_nsec); - inode->i_ctime = *ctime; + inode_set_ctime_to_ts(inode, *ctime); } if (ci->i_version == 0 || ceph_seq_cmp(time_warp_seq, ci->i_time_warp_seq) > 0) { @@ -738,7 +739,7 @@ void ceph_fill_file_time(struct inode *inode, int issued, } else { /* we have no write|excl caps; whatever the MDS says is true */ if (ceph_seq_cmp(time_warp_seq, ci->i_time_warp_seq) >= 0) { - inode->i_ctime = *ctime; + inode_set_ctime_to_ts(inode, *ctime); inode->i_mtime = *mtime; inode->i_atime = *atime; ci->i_time_warp_seq = time_warp_seq; @@ -2166,7 +2167,8 @@ int __ceph_setattr(struct inode *inode, struct iattr *attr) bool only = (ia_valid & (ATTR_SIZE|ATTR_MTIME|ATTR_ATIME| ATTR_MODE|ATTR_UID|ATTR_GID)) == 0; dout("setattr %p ctime %lld.%ld -> %lld.%ld (%s)\n", inode, - inode->i_ctime.tv_sec, inode->i_ctime.tv_nsec, + inode_get_ctime(inode).tv_sec, + inode_get_ctime(inode).tv_nsec, attr->ia_ctime.tv_sec, attr->ia_ctime.tv_nsec, only ? "ctime only" : "ignored"); if (only) { @@ -2191,7 +2193,7 @@ int __ceph_setattr(struct inode *inode, struct iattr *attr) if (dirtied) { inode_dirty_flags = __ceph_mark_dirty_caps(ci, dirtied, &prealloc_cf); - inode->i_ctime = attr->ia_ctime; + inode_set_ctime_to_ts(inode, attr->ia_ctime); inode_inc_iversion_raw(inode); } @@ -2465,7 +2467,7 @@ int ceph_getattr(struct mnt_idmap *idmap, const struct path *path, return err; } - generic_fillattr(&nop_mnt_idmap, inode, stat); + generic_fillattr(&nop_mnt_idmap, request_mask, inode, stat); stat->ino = ceph_present_inode(inode); /* diff --git a/fs/ceph/mds_client.c b/fs/ceph/mds_client.c index 66048a86c480..5fb367b1d4b0 100644 --- a/fs/ceph/mds_client.c +++ b/fs/ceph/mds_client.c @@ -4764,7 +4764,7 @@ static void delayed_work(struct work_struct *work) dout("mdsc delayed_work\n"); - if (mdsc->stopping) + if (mdsc->stopping >= CEPH_MDSC_STOPPING_FLUSHED) return; mutex_lock(&mdsc->mutex); @@ -4943,7 +4943,7 @@ void send_flush_mdlog(struct ceph_mds_session *s) void ceph_mdsc_pre_umount(struct ceph_mds_client *mdsc) { dout("pre_umount\n"); - mdsc->stopping = 1; + mdsc->stopping = CEPH_MDSC_STOPPING_BEGIN; ceph_mdsc_iterate_sessions(mdsc, send_flush_mdlog, true); ceph_mdsc_iterate_sessions(mdsc, lock_unlock_session, false); diff --git a/fs/ceph/mds_client.h b/fs/ceph/mds_client.h index 724307ff89cd..86d2965e68a1 100644 --- a/fs/ceph/mds_client.h +++ b/fs/ceph/mds_client.h @@ -380,6 +380,11 @@ struct cap_wait { int want; }; +enum { + CEPH_MDSC_STOPPING_BEGIN = 1, + CEPH_MDSC_STOPPING_FLUSHED = 2, +}; + /* * mds client state */ diff --git a/fs/ceph/snap.c b/fs/ceph/snap.c index 343d738448dc..c9920ade15f5 100644 --- a/fs/ceph/snap.c +++ b/fs/ceph/snap.c @@ -660,7 +660,7 @@ int __ceph_finish_cap_snap(struct ceph_inode_info *ci, capsnap->size = i_size_read(inode); capsnap->mtime = inode->i_mtime; capsnap->atime = inode->i_atime; - capsnap->ctime = inode->i_ctime; + capsnap->ctime = inode_get_ctime(inode); capsnap->btime = ci->i_btime; capsnap->change_attr = inode_peek_iversion_raw(inode); capsnap->time_warp_seq = ci->i_time_warp_seq; diff --git a/fs/ceph/super.c b/fs/ceph/super.c index 3fc48b43cab0..a5f52013314d 100644 --- a/fs/ceph/super.c +++ b/fs/ceph/super.c @@ -1374,6 +1374,16 @@ static void ceph_kill_sb(struct super_block *s) ceph_mdsc_pre_umount(fsc->mdsc); flush_fs_workqueues(fsc); + /* + * Though the kill_anon_super() will finally trigger the + * sync_filesystem() anyway, we still need to do it here + * and then bump the stage of shutdown to stop the work + * queue as earlier as possible. + */ + sync_filesystem(s); + + fsc->mdsc->stopping = CEPH_MDSC_STOPPING_FLUSHED; + kill_anon_super(s); fsc->client->extra_mon_dispatch = NULL; diff --git a/fs/ceph/xattr.c b/fs/ceph/xattr.c index 806183959c47..1cbd84cc82a8 100644 --- a/fs/ceph/xattr.c +++ b/fs/ceph/xattr.c @@ -1238,7 +1238,7 @@ retry: dirty = __ceph_mark_dirty_caps(ci, CEPH_CAP_XATTR_EXCL, &prealloc_cf); ci->i_xattrs.dirty = true; - inode->i_ctime = current_time(inode); + inode_set_ctime_current(inode); } spin_unlock(&ci->i_ceph_lock); diff --git a/fs/coda/coda_linux.c b/fs/coda/coda_linux.c index 903ca8fa4b9b..ae023853a98f 100644 --- a/fs/coda/coda_linux.c +++ b/fs/coda/coda_linux.c @@ -127,7 +127,8 @@ void coda_vattr_to_iattr(struct inode *inode, struct coda_vattr *attr) if (attr->va_mtime.tv_sec != -1) inode->i_mtime = coda_to_timespec64(attr->va_mtime); if (attr->va_ctime.tv_sec != -1) - inode->i_ctime = coda_to_timespec64(attr->va_ctime); + inode_set_ctime_to_ts(inode, + coda_to_timespec64(attr->va_ctime)); } diff --git a/fs/coda/dir.c b/fs/coda/dir.c index 8450b1bd354b..cb512b10473b 100644 --- a/fs/coda/dir.c +++ b/fs/coda/dir.c @@ -111,7 +111,7 @@ static inline void coda_dir_update_mtime(struct inode *dir) /* optimistically we can also act as if our nose bleeds. The * granularity of the mtime is coarse anyways so we might actually be * right most of the time. Note: we only do this for directories. */ - dir->i_mtime = dir->i_ctime = current_time(dir); + dir->i_mtime = inode_set_ctime_current(dir); #endif } @@ -429,21 +429,14 @@ static int coda_readdir(struct file *coda_file, struct dir_context *ctx) cfi = coda_ftoc(coda_file); host_file = cfi->cfi_container; - if (host_file->f_op->iterate || host_file->f_op->iterate_shared) { + if (host_file->f_op->iterate_shared) { struct inode *host_inode = file_inode(host_file); ret = -ENOENT; if (!IS_DEADDIR(host_inode)) { - if (host_file->f_op->iterate_shared) { - inode_lock_shared(host_inode); - ret = host_file->f_op->iterate_shared(host_file, ctx); - file_accessed(host_file); - inode_unlock_shared(host_inode); - } else { - inode_lock(host_inode); - ret = host_file->f_op->iterate(host_file, ctx); - file_accessed(host_file); - inode_unlock(host_inode); - } + inode_lock_shared(host_inode); + ret = host_file->f_op->iterate_shared(host_file, ctx); + file_accessed(host_file); + inode_unlock_shared(host_inode); } return ret; } @@ -585,10 +578,11 @@ const struct inode_operations coda_dir_inode_operations = { .setattr = coda_setattr, }; +WRAP_DIR_ITER(coda_readdir) // FIXME! const struct file_operations coda_dir_operations = { .llseek = generic_file_llseek, .read = generic_read_dir, - .iterate = coda_readdir, + .iterate_shared = shared_coda_readdir, .open = coda_open, .release = coda_release, .fsync = coda_fsync, diff --git a/fs/coda/file.c b/fs/coda/file.c index 12b26bd13564..42346618b4ed 100644 --- a/fs/coda/file.c +++ b/fs/coda/file.c @@ -84,7 +84,7 @@ coda_file_write_iter(struct kiocb *iocb, struct iov_iter *to) ret = vfs_iter_write(cfi->cfi_container, to, &iocb->ki_pos, 0); coda_inode->i_size = file_inode(host_file)->i_size; coda_inode->i_blocks = (coda_inode->i_size + 511) >> 9; - coda_inode->i_mtime = coda_inode->i_ctime = current_time(coda_inode); + coda_inode->i_mtime = inode_set_ctime_current(coda_inode); inode_unlock(coda_inode); file_end_write(host_file); diff --git a/fs/coda/inode.c b/fs/coda/inode.c index d661e6cf17ac..0c7c2528791e 100644 --- a/fs/coda/inode.c +++ b/fs/coda/inode.c @@ -256,7 +256,8 @@ int coda_getattr(struct mnt_idmap *idmap, const struct path *path, { int err = coda_revalidate_inode(d_inode(path->dentry)); if (!err) - generic_fillattr(&nop_mnt_idmap, d_inode(path->dentry), stat); + generic_fillattr(&nop_mnt_idmap, request_mask, + d_inode(path->dentry), stat); return err; } @@ -269,7 +270,7 @@ int coda_setattr(struct mnt_idmap *idmap, struct dentry *de, memset(&vattr, 0, sizeof(vattr)); - inode->i_ctime = current_time(inode); + inode_set_ctime_current(inode); coda_iattr_to_vattr(iattr, &vattr); vattr.va_type = C_VNON; /* cannot set type */ diff --git a/fs/configfs/inode.c b/fs/configfs/inode.c index 1c15edbe70ff..fbdcb3582926 100644 --- a/fs/configfs/inode.c +++ b/fs/configfs/inode.c @@ -88,8 +88,7 @@ int configfs_setattr(struct mnt_idmap *idmap, struct dentry *dentry, static inline void set_default_inode_attr(struct inode * inode, umode_t mode) { inode->i_mode = mode; - inode->i_atime = inode->i_mtime = - inode->i_ctime = current_time(inode); + inode->i_atime = inode->i_mtime = inode_set_ctime_current(inode); } static inline void set_inode_attr(struct inode * inode, struct iattr * iattr) @@ -99,7 +98,7 @@ static inline void set_inode_attr(struct inode * inode, struct iattr * iattr) inode->i_gid = iattr->ia_gid; inode->i_atime = iattr->ia_atime; inode->i_mtime = iattr->ia_mtime; - inode->i_ctime = iattr->ia_ctime; + inode_set_ctime_to_ts(inode, iattr->ia_ctime); } struct inode *configfs_new_inode(umode_t mode, struct configfs_dirent *sd, @@ -172,7 +171,7 @@ struct inode *configfs_create(struct dentry *dentry, umode_t mode) return ERR_PTR(-ENOMEM); p_inode = d_inode(dentry->d_parent); - p_inode->i_mtime = p_inode->i_ctime = current_time(p_inode); + p_inode->i_mtime = inode_set_ctime_current(p_inode); configfs_set_inode_lock_class(sd, inode); return inode; } diff --git a/fs/cramfs/inode.c b/fs/cramfs/inode.c index 27c6597aa1be..5ee7d7bbb361 100644 --- a/fs/cramfs/inode.c +++ b/fs/cramfs/inode.c @@ -133,7 +133,8 @@ static struct inode *get_cramfs_inode(struct super_block *sb, } /* Struct copy intentional */ - inode->i_mtime = inode->i_atime = inode->i_ctime = zerotime; + inode->i_mtime = inode->i_atime = inode_set_ctime_to_ts(inode, + zerotime); /* inode->i_nlink is left 1 - arguably wrong for directories, but it's the best we can do without reading the directory contents. 1 yields the right result in GNU find, even @@ -485,12 +486,16 @@ static void cramfs_kill_sb(struct super_block *sb) { struct cramfs_sb_info *sbi = CRAMFS_SB(sb); + generic_shutdown_super(sb); + if (IS_ENABLED(CONFIG_CRAMFS_MTD) && sb->s_mtd) { if (sbi && sbi->mtd_point_size) mtd_unpoint(sb->s_mtd, 0, sbi->mtd_point_size); - kill_mtd_super(sb); + put_mtd_device(sb->s_mtd); + sb->s_mtd = NULL; } else if (IS_ENABLED(CONFIG_CRAMFS_BLOCKDEV) && sb->s_bdev) { - kill_block_super(sb); + sync_blockdev(sb->s_bdev); + blkdev_put(sb->s_bdev, sb); } kfree(sbi); } diff --git a/fs/dcache.c b/fs/dcache.c index 52e6d5fdab6b..25ac74d30bff 100644 --- a/fs/dcache.c +++ b/fs/dcache.c @@ -1664,7 +1664,7 @@ static enum d_walk_ret umount_check(void *_data, struct dentry *dentry) if (dentry == _data && dentry->d_lockref.count == 1) return D_WALK_CONTINUE; - printk(KERN_ERR "BUG: Dentry %p{i=%lx,n=%pd} " + WARN(1, "BUG: Dentry %p{i=%lx,n=%pd} " " still in use (%d) [unmount of %s %s]\n", dentry, dentry->d_inode ? @@ -1673,7 +1673,6 @@ static enum d_walk_ret umount_check(void *_data, struct dentry *dentry) dentry->d_lockref.count, dentry->d_sb->s_type->name, dentry->d_sb->s_id); - WARN_ON(1); return D_WALK_CONTINUE; } @@ -3247,8 +3246,6 @@ void d_genocide(struct dentry *parent) d_walk(parent, parent, d_genocide_kill); } -EXPORT_SYMBOL(d_genocide); - void d_tmpfile(struct file *file, struct inode *inode) { struct dentry *dentry = file->f_path.dentry; diff --git a/fs/debugfs/file.c b/fs/debugfs/file.c index b7711888dd17..87b3753aa4b1 100644 --- a/fs/debugfs/file.c +++ b/fs/debugfs/file.c @@ -904,8 +904,52 @@ EXPORT_SYMBOL_GPL(debugfs_create_str); static ssize_t debugfs_write_file_str(struct file *file, const char __user *user_buf, size_t count, loff_t *ppos) { - /* This is really only for read-only strings */ - return -EINVAL; + struct dentry *dentry = F_DENTRY(file); + char *old, *new = NULL; + int pos = *ppos; + int r; + + r = debugfs_file_get(dentry); + if (unlikely(r)) + return r; + + old = *(char **)file->private_data; + + /* only allow strict concatenation */ + r = -EINVAL; + if (pos && pos != strlen(old)) + goto error; + + r = -E2BIG; + if (pos + count + 1 > PAGE_SIZE) + goto error; + + r = -ENOMEM; + new = kmalloc(pos + count + 1, GFP_KERNEL); + if (!new) + goto error; + + if (pos) + memcpy(new, old, pos); + + r = -EFAULT; + if (copy_from_user(new + pos, user_buf, count)) + goto error; + + new[pos + count] = '\0'; + strim(new); + + rcu_assign_pointer(*(char **)file->private_data, new); + synchronize_rcu(); + kfree(old); + + debugfs_file_put(dentry); + return count; + +error: + kfree(new); + debugfs_file_put(dentry); + return r; } static const struct file_operations fops_str = { diff --git a/fs/debugfs/inode.c b/fs/debugfs/inode.c index 3f81f73c241a..83e57e9f9fa0 100644 --- a/fs/debugfs/inode.c +++ b/fs/debugfs/inode.c @@ -72,8 +72,7 @@ static struct inode *debugfs_get_inode(struct super_block *sb) struct inode *inode = new_inode(sb); if (inode) { inode->i_ino = get_next_ino(); - inode->i_atime = inode->i_mtime = - inode->i_ctime = current_time(inode); + inode->i_atime = inode->i_mtime = inode_set_ctime_current(inode); } return inode; } diff --git a/fs/devpts/inode.c b/fs/devpts/inode.c index fe3db0eda8e4..299c295a27a0 100644 --- a/fs/devpts/inode.c +++ b/fs/devpts/inode.c @@ -338,7 +338,7 @@ static int mknod_ptmx(struct super_block *sb) } inode->i_ino = 2; - inode->i_mtime = inode->i_atime = inode->i_ctime = current_time(inode); + inode->i_mtime = inode->i_atime = inode_set_ctime_current(inode); mode = S_IFCHR|opts->ptmxmode; init_special_inode(inode, mode, MKDEV(TTYAUX_MAJOR, 2)); @@ -451,7 +451,7 @@ devpts_fill_super(struct super_block *s, void *data, int silent) if (!inode) goto fail; inode->i_ino = 1; - inode->i_mtime = inode->i_atime = inode->i_ctime = current_time(inode); + inode->i_mtime = inode->i_atime = inode_set_ctime_current(inode); inode->i_mode = S_IFDIR | S_IRUGO | S_IXUGO | S_IWUSR; inode->i_op = &simple_dir_inode_operations; inode->i_fop = &simple_dir_operations; @@ -534,12 +534,12 @@ void devpts_kill_index(struct pts_fs_info *fsi, int idx) /** * devpts_pty_new -- create a new inode in /dev/pts/ - * @ptmx_inode: inode of the master - * @device: major+minor of the node to be created + * @fsi: Filesystem info for this instance. * @index: used as a name of the node * @priv: what's given back by devpts_get_priv * - * The created inode is returned. Remove it from /dev/pts/ by devpts_pty_kill. + * The dentry for the created inode is returned. + * Remove it from /dev/pts/ with devpts_pty_kill(). */ struct dentry *devpts_pty_new(struct pts_fs_info *fsi, int index, void *priv) { @@ -560,7 +560,7 @@ struct dentry *devpts_pty_new(struct pts_fs_info *fsi, int index, void *priv) inode->i_ino = index + 3; inode->i_uid = opts->setuid ? opts->uid : current_fsuid(); inode->i_gid = opts->setgid ? opts->gid : current_fsgid(); - inode->i_mtime = inode->i_atime = inode->i_ctime = current_time(inode); + inode->i_mtime = inode->i_atime = inode_set_ctime_current(inode); init_special_inode(inode, S_IFCHR|opts->mode, MKDEV(UNIX98_PTY_SLAVE_MAJOR, index)); sprintf(s, "%d", index); @@ -580,7 +580,7 @@ struct dentry *devpts_pty_new(struct pts_fs_info *fsi, int index, void *priv) /** * devpts_get_priv -- get private data for a slave - * @pts_inode: inode of the slave + * @dentry: dentry of the slave * * Returns whatever was passed as priv in devpts_pty_new for a given inode. */ @@ -593,7 +593,7 @@ void *devpts_get_priv(struct dentry *dentry) /** * devpts_pty_kill -- remove inode form /dev/pts/ - * @inode: inode of the slave to be removed + * @dentry: dentry of the slave to be removed * * This is an inverse operation of devpts_pty_new. */ diff --git a/fs/dlm/config.c b/fs/dlm/config.c index 2beceff024e3..e55e0a2cd2e8 100644 --- a/fs/dlm/config.c +++ b/fs/dlm/config.c @@ -664,7 +664,7 @@ static ssize_t comm_addr_store(struct config_item *item, const char *buf, memcpy(addr, buf, len); - rv = dlm_lowcomms_addr(cm->nodeid, addr, len); + rv = dlm_midcomms_addr(cm->nodeid, addr, len); if (rv) { kfree(addr); return rv; diff --git a/fs/dlm/debug_fs.c b/fs/dlm/debug_fs.c index a1aca41c49d0..5aabcb6f0f15 100644 --- a/fs/dlm/debug_fs.c +++ b/fs/dlm/debug_fs.c @@ -18,6 +18,7 @@ #include "dlm_internal.h" #include "midcomms.h" #include "lock.h" +#include "ast.h" #define DLM_DEBUG_BUF_LEN 4096 static char debug_buf[DLM_DEBUG_BUF_LEN]; @@ -365,6 +366,52 @@ static void print_format4(struct dlm_rsb *r, struct seq_file *s) unlock_rsb(r); } +static void print_format5_lock(struct seq_file *s, struct dlm_lkb *lkb) +{ + struct dlm_callback *cb; + + /* lkb_id lkb_flags mode flags sb_status sb_flags */ + + spin_lock(&lkb->lkb_cb_lock); + list_for_each_entry(cb, &lkb->lkb_callbacks, list) { + seq_printf(s, "%x %x %d %x %d %x\n", + lkb->lkb_id, + dlm_iflags_val(lkb), + cb->mode, + cb->flags, + cb->sb_status, + cb->sb_flags); + } + spin_unlock(&lkb->lkb_cb_lock); +} + +static void print_format5(struct dlm_rsb *r, struct seq_file *s) +{ + struct dlm_lkb *lkb; + + lock_rsb(r); + + list_for_each_entry(lkb, &r->res_grantqueue, lkb_statequeue) { + print_format5_lock(s, lkb); + if (seq_has_overflowed(s)) + goto out; + } + + list_for_each_entry(lkb, &r->res_convertqueue, lkb_statequeue) { + print_format5_lock(s, lkb); + if (seq_has_overflowed(s)) + goto out; + } + + list_for_each_entry(lkb, &r->res_waitqueue, lkb_statequeue) { + print_format5_lock(s, lkb); + if (seq_has_overflowed(s)) + goto out; + } + out: + unlock_rsb(r); +} + struct rsbtbl_iter { struct dlm_rsb *rsb; unsigned bucket; @@ -408,6 +455,13 @@ static int table_seq_show(struct seq_file *seq, void *iter_ptr) } print_format4(ri->rsb, seq); break; + case 5: + if (ri->header) { + seq_puts(seq, "lkb_id lkb_flags mode flags sb_status sb_flags\n"); + ri->header = 0; + } + print_format5(ri->rsb, seq); + break; } return 0; @@ -417,6 +471,7 @@ static const struct seq_operations format1_seq_ops; static const struct seq_operations format2_seq_ops; static const struct seq_operations format3_seq_ops; static const struct seq_operations format4_seq_ops; +static const struct seq_operations format5_seq_ops; static void *table_seq_start(struct seq_file *seq, loff_t *pos) { @@ -448,6 +503,8 @@ static void *table_seq_start(struct seq_file *seq, loff_t *pos) ri->format = 3; if (seq->op == &format4_seq_ops) ri->format = 4; + if (seq->op == &format5_seq_ops) + ri->format = 5; tree = toss ? &ls->ls_rsbtbl[bucket].toss : &ls->ls_rsbtbl[bucket].keep; @@ -602,10 +659,18 @@ static const struct seq_operations format4_seq_ops = { .show = table_seq_show, }; +static const struct seq_operations format5_seq_ops = { + .start = table_seq_start, + .next = table_seq_next, + .stop = table_seq_stop, + .show = table_seq_show, +}; + static const struct file_operations format1_fops; static const struct file_operations format2_fops; static const struct file_operations format3_fops; static const struct file_operations format4_fops; +static const struct file_operations format5_fops; static int table_open1(struct inode *inode, struct file *file) { @@ -683,7 +748,21 @@ static int table_open4(struct inode *inode, struct file *file) struct seq_file *seq; int ret; - ret = seq_open(file, &format4_seq_ops); + ret = seq_open(file, &format5_seq_ops); + if (ret) + return ret; + + seq = file->private_data; + seq->private = inode->i_private; /* the dlm_ls */ + return 0; +} + +static int table_open5(struct inode *inode, struct file *file) +{ + struct seq_file *seq; + int ret; + + ret = seq_open(file, &format5_seq_ops); if (ret) return ret; @@ -725,6 +804,14 @@ static const struct file_operations format4_fops = { .release = seq_release }; +static const struct file_operations format5_fops = { + .owner = THIS_MODULE, + .open = table_open5, + .read = seq_read, + .llseek = seq_lseek, + .release = seq_release +}; + /* * dump lkb's on the ls_waiters list */ @@ -793,6 +880,7 @@ void dlm_delete_debug_file(struct dlm_ls *ls) debugfs_remove(ls->ls_debug_locks_dentry); debugfs_remove(ls->ls_debug_all_dentry); debugfs_remove(ls->ls_debug_toss_dentry); + debugfs_remove(ls->ls_debug_queued_asts_dentry); } static int dlm_state_show(struct seq_file *file, void *offset) @@ -936,6 +1024,17 @@ void dlm_create_debug_file(struct dlm_ls *ls) dlm_root, ls, &waiters_fops); + + /* format 5 */ + + memset(name, 0, sizeof(name)); + snprintf(name, DLM_LOCKSPACE_LEN + 8, "%s_queued_asts", ls->ls_name); + + ls->ls_debug_queued_asts_dentry = debugfs_create_file(name, + 0644, + dlm_root, + ls, + &format5_fops); } void __init dlm_register_debugfs(void) diff --git a/fs/dlm/dir.c b/fs/dlm/dir.c index fb1981654bb2..f6acba4310a7 100644 --- a/fs/dlm/dir.c +++ b/fs/dlm/dir.c @@ -58,7 +58,7 @@ void dlm_recover_dir_nodeid(struct dlm_ls *ls) up_read(&ls->ls_root_sem); } -int dlm_recover_directory(struct dlm_ls *ls) +int dlm_recover_directory(struct dlm_ls *ls, uint64_t seq) { struct dlm_member *memb; char *b, *last_name = NULL; @@ -90,7 +90,7 @@ int dlm_recover_directory(struct dlm_ls *ls) } error = dlm_rcom_names(ls, memb->nodeid, - last_name, last_len); + last_name, last_len, seq); if (error) goto out_free; @@ -196,7 +196,8 @@ int dlm_recover_directory(struct dlm_ls *ls) return error; } -static struct dlm_rsb *find_rsb_root(struct dlm_ls *ls, char *name, int len) +static struct dlm_rsb *find_rsb_root(struct dlm_ls *ls, const char *name, + int len) { struct dlm_rsb *r; uint32_t hash, bucket; @@ -232,7 +233,7 @@ static struct dlm_rsb *find_rsb_root(struct dlm_ls *ls, char *name, int len) for rsb's we're master of and whose directory node matches the requesting node. inbuf is the rsb name last sent, inlen is the name's length */ -void dlm_copy_master_names(struct dlm_ls *ls, char *inbuf, int inlen, +void dlm_copy_master_names(struct dlm_ls *ls, const char *inbuf, int inlen, char *outbuf, int outlen, int nodeid) { struct list_head *list; @@ -245,9 +246,8 @@ void dlm_copy_master_names(struct dlm_ls *ls, char *inbuf, int inlen, if (inlen > 1) { r = find_rsb_root(ls, inbuf, inlen); if (!r) { - inbuf[inlen - 1] = '\0'; - log_error(ls, "copy_master_names from %d start %d %s", - nodeid, inlen, inbuf); + log_error(ls, "copy_master_names from %d start %d %.*s", + nodeid, inlen, inlen, inbuf); goto out; } list = r->res_root_list.next; diff --git a/fs/dlm/dir.h b/fs/dlm/dir.h index 03844d086be2..39ecb69d7ef3 100644 --- a/fs/dlm/dir.h +++ b/fs/dlm/dir.h @@ -15,9 +15,9 @@ int dlm_dir_nodeid(struct dlm_rsb *rsb); int dlm_hash2nodeid(struct dlm_ls *ls, uint32_t hash); void dlm_recover_dir_nodeid(struct dlm_ls *ls); -int dlm_recover_directory(struct dlm_ls *ls); -void dlm_copy_master_names(struct dlm_ls *ls, char *inbuf, int inlen, - char *outbuf, int outlen, int nodeid); +int dlm_recover_directory(struct dlm_ls *ls, uint64_t seq); +void dlm_copy_master_names(struct dlm_ls *ls, const char *inbuf, int inlen, + char *outbuf, int outlen, int nodeid); #endif /* __DIR_DOT_H__ */ diff --git a/fs/dlm/dlm_internal.h b/fs/dlm/dlm_internal.h index c8156770205e..dfc444dad329 100644 --- a/fs/dlm/dlm_internal.h +++ b/fs/dlm/dlm_internal.h @@ -598,6 +598,7 @@ struct dlm_ls { struct dentry *ls_debug_locks_dentry; /* debugfs */ struct dentry *ls_debug_all_dentry; /* debugfs */ struct dentry *ls_debug_toss_dentry; /* debugfs */ + struct dentry *ls_debug_queued_asts_dentry; /* debugfs */ wait_queue_head_t ls_uevent_wait; /* user part of join/leave */ int ls_uevent_result; diff --git a/fs/dlm/lock.c b/fs/dlm/lock.c index f511a9d7d416..652c51fbbf76 100644 --- a/fs/dlm/lock.c +++ b/fs/dlm/lock.c @@ -86,8 +86,8 @@ static int send_remove(struct dlm_rsb *r); static int _request_lock(struct dlm_rsb *r, struct dlm_lkb *lkb); static int _cancel_lock(struct dlm_rsb *r, struct dlm_lkb *lkb); static void __receive_convert_reply(struct dlm_rsb *r, struct dlm_lkb *lkb, - struct dlm_message *ms, bool local); -static int receive_extralen(struct dlm_message *ms); + const struct dlm_message *ms, bool local); +static int receive_extralen(const struct dlm_message *ms); static void do_purge(struct dlm_ls *ls, int nodeid, int pid); static void toss_rsb(struct kref *kref); @@ -984,8 +984,8 @@ static void __dlm_master_lookup(struct dlm_ls *ls, struct dlm_rsb *r, int our_no * . dlm_master_lookup RECOVER_MASTER (fix_master 1, from_master 0) */ -int dlm_master_lookup(struct dlm_ls *ls, int from_nodeid, char *name, int len, - unsigned int flags, int *r_nodeid, int *result) +int dlm_master_lookup(struct dlm_ls *ls, int from_nodeid, const char *name, + int len, unsigned int flags, int *r_nodeid, int *result) { struct dlm_rsb *r = NULL; uint32_t hash, b; @@ -1106,7 +1106,7 @@ static void dlm_dump_rsb_hash(struct dlm_ls *ls, uint32_t hash) } } -void dlm_dump_rsb_name(struct dlm_ls *ls, char *name, int len) +void dlm_dump_rsb_name(struct dlm_ls *ls, const char *name, int len) { struct dlm_rsb *r = NULL; uint32_t hash, b; @@ -1459,7 +1459,7 @@ static int add_to_waiters(struct dlm_lkb *lkb, int mstype, int to_nodeid) set RESEND and dlm_recover_waiters_post() */ static int _remove_from_waiters(struct dlm_lkb *lkb, int mstype, - struct dlm_message *ms) + const struct dlm_message *ms) { struct dlm_ls *ls = lkb->lkb_resource->res_ls; int overlap_done = 0; @@ -1557,8 +1557,8 @@ static int remove_from_waiters(struct dlm_lkb *lkb, int mstype) /* Handles situations where we might be processing a "fake" or "local" reply in which we can't try to take waiters_mutex again. */ -static int remove_from_waiters_ms(struct dlm_lkb *lkb, struct dlm_message *ms, - bool local) +static int remove_from_waiters_ms(struct dlm_lkb *lkb, + const struct dlm_message *ms, bool local) { struct dlm_ls *ls = lkb->lkb_resource->res_ls; int error; @@ -1800,7 +1800,7 @@ static void set_lvb_unlock(struct dlm_rsb *r, struct dlm_lkb *lkb) /* lkb is process copy (pc) */ static void set_lvb_lock_pc(struct dlm_rsb *r, struct dlm_lkb *lkb, - struct dlm_message *ms) + const struct dlm_message *ms) { int b; @@ -1907,7 +1907,7 @@ static void grant_lock(struct dlm_rsb *r, struct dlm_lkb *lkb) } static void grant_lock_pc(struct dlm_rsb *r, struct dlm_lkb *lkb, - struct dlm_message *ms) + const struct dlm_message *ms) { set_lvb_lock_pc(r, lkb, ms); _grant_lock(r, lkb); @@ -1945,7 +1945,7 @@ static void munge_demoted(struct dlm_lkb *lkb) lkb->lkb_grmode = DLM_LOCK_NL; } -static void munge_altmode(struct dlm_lkb *lkb, struct dlm_message *ms) +static void munge_altmode(struct dlm_lkb *lkb, const struct dlm_message *ms) { if (ms->m_type != cpu_to_le32(DLM_MSG_REQUEST_REPLY) && ms->m_type != cpu_to_le32(DLM_MSG_GRANT)) { @@ -3641,8 +3641,9 @@ static int send_cancel_reply(struct dlm_rsb *r, struct dlm_lkb *lkb, int rv) return send_common_reply(r, lkb, DLM_MSG_CANCEL_REPLY, rv); } -static int send_lookup_reply(struct dlm_ls *ls, struct dlm_message *ms_in, - int ret_nodeid, int rv) +static int send_lookup_reply(struct dlm_ls *ls, + const struct dlm_message *ms_in, int ret_nodeid, + int rv) { struct dlm_rsb *r = &ls->ls_local_rsb; struct dlm_message *ms; @@ -3667,14 +3668,15 @@ static int send_lookup_reply(struct dlm_ls *ls, struct dlm_message *ms_in, of message, unlike the send side where we can safely send everything about the lkb for any type of message */ -static void receive_flags(struct dlm_lkb *lkb, struct dlm_message *ms) +static void receive_flags(struct dlm_lkb *lkb, const struct dlm_message *ms) { lkb->lkb_exflags = le32_to_cpu(ms->m_exflags); dlm_set_sbflags_val(lkb, le32_to_cpu(ms->m_sbflags)); dlm_set_dflags_val(lkb, le32_to_cpu(ms->m_flags)); } -static void receive_flags_reply(struct dlm_lkb *lkb, struct dlm_message *ms, +static void receive_flags_reply(struct dlm_lkb *lkb, + const struct dlm_message *ms, bool local) { if (local) @@ -3684,14 +3686,14 @@ static void receive_flags_reply(struct dlm_lkb *lkb, struct dlm_message *ms, dlm_set_dflags_val(lkb, le32_to_cpu(ms->m_flags)); } -static int receive_extralen(struct dlm_message *ms) +static int receive_extralen(const struct dlm_message *ms) { return (le16_to_cpu(ms->m_header.h_length) - sizeof(struct dlm_message)); } static int receive_lvb(struct dlm_ls *ls, struct dlm_lkb *lkb, - struct dlm_message *ms) + const struct dlm_message *ms) { int len; @@ -3719,7 +3721,7 @@ static void fake_astfn(void *astparam) } static int receive_request_args(struct dlm_ls *ls, struct dlm_lkb *lkb, - struct dlm_message *ms) + const struct dlm_message *ms) { lkb->lkb_nodeid = le32_to_cpu(ms->m_header.h_nodeid); lkb->lkb_ownpid = le32_to_cpu(ms->m_pid); @@ -3741,7 +3743,7 @@ static int receive_request_args(struct dlm_ls *ls, struct dlm_lkb *lkb, } static int receive_convert_args(struct dlm_ls *ls, struct dlm_lkb *lkb, - struct dlm_message *ms) + const struct dlm_message *ms) { if (lkb->lkb_status != DLM_LKSTS_GRANTED) return -EBUSY; @@ -3756,7 +3758,7 @@ static int receive_convert_args(struct dlm_ls *ls, struct dlm_lkb *lkb, } static int receive_unlock_args(struct dlm_ls *ls, struct dlm_lkb *lkb, - struct dlm_message *ms) + const struct dlm_message *ms) { if (receive_lvb(ls, lkb, ms)) return -ENOMEM; @@ -3766,7 +3768,7 @@ static int receive_unlock_args(struct dlm_ls *ls, struct dlm_lkb *lkb, /* We fill in the local-lkb fields with the info that send_xxxx_reply() uses to send a reply and that the remote end uses to process the reply. */ -static void setup_local_lkb(struct dlm_ls *ls, struct dlm_message *ms) +static void setup_local_lkb(struct dlm_ls *ls, const struct dlm_message *ms) { struct dlm_lkb *lkb = &ls->ls_local_lkb; lkb->lkb_nodeid = le32_to_cpu(ms->m_header.h_nodeid); @@ -3776,7 +3778,7 @@ static void setup_local_lkb(struct dlm_ls *ls, struct dlm_message *ms) /* This is called after the rsb is locked so that we can safely inspect fields in the lkb. */ -static int validate_message(struct dlm_lkb *lkb, struct dlm_message *ms) +static int validate_message(struct dlm_lkb *lkb, const struct dlm_message *ms) { int from = le32_to_cpu(ms->m_header.h_nodeid); int error = 0; @@ -3828,7 +3830,7 @@ out: return error; } -static int receive_request(struct dlm_ls *ls, struct dlm_message *ms) +static int receive_request(struct dlm_ls *ls, const struct dlm_message *ms) { struct dlm_lkb *lkb; struct dlm_rsb *r; @@ -3907,7 +3909,7 @@ static int receive_request(struct dlm_ls *ls, struct dlm_message *ms) return error; } -static int receive_convert(struct dlm_ls *ls, struct dlm_message *ms) +static int receive_convert(struct dlm_ls *ls, const struct dlm_message *ms) { struct dlm_lkb *lkb; struct dlm_rsb *r; @@ -3963,7 +3965,7 @@ static int receive_convert(struct dlm_ls *ls, struct dlm_message *ms) return error; } -static int receive_unlock(struct dlm_ls *ls, struct dlm_message *ms) +static int receive_unlock(struct dlm_ls *ls, const struct dlm_message *ms) { struct dlm_lkb *lkb; struct dlm_rsb *r; @@ -4015,7 +4017,7 @@ static int receive_unlock(struct dlm_ls *ls, struct dlm_message *ms) return error; } -static int receive_cancel(struct dlm_ls *ls, struct dlm_message *ms) +static int receive_cancel(struct dlm_ls *ls, const struct dlm_message *ms) { struct dlm_lkb *lkb; struct dlm_rsb *r; @@ -4051,7 +4053,7 @@ static int receive_cancel(struct dlm_ls *ls, struct dlm_message *ms) return error; } -static int receive_grant(struct dlm_ls *ls, struct dlm_message *ms) +static int receive_grant(struct dlm_ls *ls, const struct dlm_message *ms) { struct dlm_lkb *lkb; struct dlm_rsb *r; @@ -4082,7 +4084,7 @@ static int receive_grant(struct dlm_ls *ls, struct dlm_message *ms) return 0; } -static int receive_bast(struct dlm_ls *ls, struct dlm_message *ms) +static int receive_bast(struct dlm_ls *ls, const struct dlm_message *ms) { struct dlm_lkb *lkb; struct dlm_rsb *r; @@ -4110,7 +4112,7 @@ static int receive_bast(struct dlm_ls *ls, struct dlm_message *ms) return 0; } -static void receive_lookup(struct dlm_ls *ls, struct dlm_message *ms) +static void receive_lookup(struct dlm_ls *ls, const struct dlm_message *ms) { int len, error, ret_nodeid, from_nodeid, our_nodeid; @@ -4130,7 +4132,7 @@ static void receive_lookup(struct dlm_ls *ls, struct dlm_message *ms) send_lookup_reply(ls, ms, ret_nodeid, error); } -static void receive_remove(struct dlm_ls *ls, struct dlm_message *ms) +static void receive_remove(struct dlm_ls *ls, const struct dlm_message *ms) { char name[DLM_RESNAME_MAXLEN+1]; struct dlm_rsb *r; @@ -4218,12 +4220,13 @@ static void receive_remove(struct dlm_ls *ls, struct dlm_message *ms) } } -static void receive_purge(struct dlm_ls *ls, struct dlm_message *ms) +static void receive_purge(struct dlm_ls *ls, const struct dlm_message *ms) { do_purge(ls, le32_to_cpu(ms->m_nodeid), le32_to_cpu(ms->m_pid)); } -static int receive_request_reply(struct dlm_ls *ls, struct dlm_message *ms) +static int receive_request_reply(struct dlm_ls *ls, + const struct dlm_message *ms) { struct dlm_lkb *lkb; struct dlm_rsb *r; @@ -4345,7 +4348,7 @@ static int receive_request_reply(struct dlm_ls *ls, struct dlm_message *ms) } static void __receive_convert_reply(struct dlm_rsb *r, struct dlm_lkb *lkb, - struct dlm_message *ms, bool local) + const struct dlm_message *ms, bool local) { /* this is the value returned from do_convert() on the master */ switch (from_dlm_errno(le32_to_cpu(ms->m_result))) { @@ -4388,8 +4391,8 @@ static void __receive_convert_reply(struct dlm_rsb *r, struct dlm_lkb *lkb, } } -static void _receive_convert_reply(struct dlm_lkb *lkb, struct dlm_message *ms, - bool local) +static void _receive_convert_reply(struct dlm_lkb *lkb, + const struct dlm_message *ms, bool local) { struct dlm_rsb *r = lkb->lkb_resource; int error; @@ -4412,7 +4415,8 @@ static void _receive_convert_reply(struct dlm_lkb *lkb, struct dlm_message *ms, put_rsb(r); } -static int receive_convert_reply(struct dlm_ls *ls, struct dlm_message *ms) +static int receive_convert_reply(struct dlm_ls *ls, + const struct dlm_message *ms) { struct dlm_lkb *lkb; int error; @@ -4426,8 +4430,8 @@ static int receive_convert_reply(struct dlm_ls *ls, struct dlm_message *ms) return 0; } -static void _receive_unlock_reply(struct dlm_lkb *lkb, struct dlm_message *ms, - bool local) +static void _receive_unlock_reply(struct dlm_lkb *lkb, + const struct dlm_message *ms, bool local) { struct dlm_rsb *r = lkb->lkb_resource; int error; @@ -4463,7 +4467,8 @@ static void _receive_unlock_reply(struct dlm_lkb *lkb, struct dlm_message *ms, put_rsb(r); } -static int receive_unlock_reply(struct dlm_ls *ls, struct dlm_message *ms) +static int receive_unlock_reply(struct dlm_ls *ls, + const struct dlm_message *ms) { struct dlm_lkb *lkb; int error; @@ -4477,8 +4482,8 @@ static int receive_unlock_reply(struct dlm_ls *ls, struct dlm_message *ms) return 0; } -static void _receive_cancel_reply(struct dlm_lkb *lkb, struct dlm_message *ms, - bool local) +static void _receive_cancel_reply(struct dlm_lkb *lkb, + const struct dlm_message *ms, bool local) { struct dlm_rsb *r = lkb->lkb_resource; int error; @@ -4515,7 +4520,8 @@ static void _receive_cancel_reply(struct dlm_lkb *lkb, struct dlm_message *ms, put_rsb(r); } -static int receive_cancel_reply(struct dlm_ls *ls, struct dlm_message *ms) +static int receive_cancel_reply(struct dlm_ls *ls, + const struct dlm_message *ms) { struct dlm_lkb *lkb; int error; @@ -4529,7 +4535,8 @@ static int receive_cancel_reply(struct dlm_ls *ls, struct dlm_message *ms) return 0; } -static void receive_lookup_reply(struct dlm_ls *ls, struct dlm_message *ms) +static void receive_lookup_reply(struct dlm_ls *ls, + const struct dlm_message *ms) { struct dlm_lkb *lkb; struct dlm_rsb *r; @@ -4608,7 +4615,7 @@ static void receive_lookup_reply(struct dlm_ls *ls, struct dlm_message *ms) dlm_put_lkb(lkb); } -static void _receive_message(struct dlm_ls *ls, struct dlm_message *ms, +static void _receive_message(struct dlm_ls *ls, const struct dlm_message *ms, uint32_t saved_seq) { int error = 0, noent = 0; @@ -4744,7 +4751,7 @@ static void _receive_message(struct dlm_ls *ls, struct dlm_message *ms, requestqueue, to processing all the saved messages, to processing new messages as they arrive. */ -static void dlm_receive_message(struct dlm_ls *ls, struct dlm_message *ms, +static void dlm_receive_message(struct dlm_ls *ls, const struct dlm_message *ms, int nodeid) { if (dlm_locking_stopped(ls)) { @@ -4767,7 +4774,7 @@ static void dlm_receive_message(struct dlm_ls *ls, struct dlm_message *ms, /* This is called by dlm_recoverd to process messages that were saved on the requestqueue. */ -void dlm_receive_message_saved(struct dlm_ls *ls, struct dlm_message *ms, +void dlm_receive_message_saved(struct dlm_ls *ls, const struct dlm_message *ms, uint32_t saved_seq) { _receive_message(ls, ms, saved_seq); @@ -4778,9 +4785,9 @@ void dlm_receive_message_saved(struct dlm_ls *ls, struct dlm_message *ms, standard locking activity) or an RCOM (recovery message sent as part of lockspace recovery). */ -void dlm_receive_buffer(union dlm_packet *p, int nodeid) +void dlm_receive_buffer(const union dlm_packet *p, int nodeid) { - struct dlm_header *hd = &p->header; + const struct dlm_header *hd = &p->header; struct dlm_ls *ls; int type = 0; @@ -5334,7 +5341,7 @@ static struct dlm_lkb *search_remid(struct dlm_rsb *r, int nodeid, /* needs at least dlm_rcom + rcom_lock */ static int receive_rcom_lock_args(struct dlm_ls *ls, struct dlm_lkb *lkb, - struct dlm_rsb *r, struct dlm_rcom *rc) + struct dlm_rsb *r, const struct dlm_rcom *rc) { struct rcom_lock *rl = (struct rcom_lock *) rc->rc_buf; @@ -5384,7 +5391,8 @@ static int receive_rcom_lock_args(struct dlm_ls *ls, struct dlm_lkb *lkb, back the rcom_lock struct we got but with the remid field filled in. */ /* needs at least dlm_rcom + rcom_lock */ -int dlm_recover_master_copy(struct dlm_ls *ls, struct dlm_rcom *rc) +int dlm_recover_master_copy(struct dlm_ls *ls, const struct dlm_rcom *rc, + __le32 *rl_remid, __le32 *rl_result) { struct rcom_lock *rl = (struct rcom_lock *) rc->rc_buf; struct dlm_rsb *r; @@ -5393,6 +5401,9 @@ int dlm_recover_master_copy(struct dlm_ls *ls, struct dlm_rcom *rc) int from_nodeid = le32_to_cpu(rc->rc_header.h_nodeid); int error; + /* init rl_remid with rcom lock rl_remid */ + *rl_remid = rl->rl_remid; + if (rl->rl_parent_lkid) { error = -EOPNOTSUPP; goto out; @@ -5448,7 +5459,7 @@ int dlm_recover_master_copy(struct dlm_ls *ls, struct dlm_rcom *rc) out_remid: /* this is the new value returned to the lock holder for saving in its process-copy lkb */ - rl->rl_remid = cpu_to_le32(lkb->lkb_id); + *rl_remid = cpu_to_le32(lkb->lkb_id); lkb->lkb_recover_seq = ls->ls_recover_seq; @@ -5459,12 +5470,13 @@ int dlm_recover_master_copy(struct dlm_ls *ls, struct dlm_rcom *rc) if (error && error != -EEXIST) log_rinfo(ls, "dlm_recover_master_copy remote %d %x error %d", from_nodeid, remid, error); - rl->rl_result = cpu_to_le32(error); + *rl_result = cpu_to_le32(error); return error; } /* needs at least dlm_rcom + rcom_lock */ -int dlm_recover_process_copy(struct dlm_ls *ls, struct dlm_rcom *rc) +int dlm_recover_process_copy(struct dlm_ls *ls, const struct dlm_rcom *rc, + uint64_t seq) { struct rcom_lock *rl = (struct rcom_lock *) rc->rc_buf; struct dlm_rsb *r; @@ -5509,7 +5521,7 @@ int dlm_recover_process_copy(struct dlm_ls *ls, struct dlm_rcom *rc) lkid, le32_to_cpu(rc->rc_header.h_nodeid), remid, result); - dlm_send_rcom_lock(r, lkb); + dlm_send_rcom_lock(r, lkb, seq); goto out; case -EEXIST: case 0: diff --git a/fs/dlm/lock.h b/fs/dlm/lock.h index aa5ad44d902b..b54e2cbbe6e2 100644 --- a/fs/dlm/lock.h +++ b/fs/dlm/lock.h @@ -12,11 +12,11 @@ #define __LOCK_DOT_H__ void dlm_dump_rsb(struct dlm_rsb *r); -void dlm_dump_rsb_name(struct dlm_ls *ls, char *name, int len); +void dlm_dump_rsb_name(struct dlm_ls *ls, const char *name, int len); void dlm_print_lkb(struct dlm_lkb *lkb); -void dlm_receive_message_saved(struct dlm_ls *ls, struct dlm_message *ms, +void dlm_receive_message_saved(struct dlm_ls *ls, const struct dlm_message *ms, uint32_t saved_seq); -void dlm_receive_buffer(union dlm_packet *p, int nodeid); +void dlm_receive_buffer(const union dlm_packet *p, int nodeid); int dlm_modes_compat(int mode1, int mode2); void dlm_put_rsb(struct dlm_rsb *r); void dlm_hold_rsb(struct dlm_rsb *r); @@ -25,8 +25,8 @@ void dlm_scan_rsbs(struct dlm_ls *ls); int dlm_lock_recovery_try(struct dlm_ls *ls); void dlm_unlock_recovery(struct dlm_ls *ls); -int dlm_master_lookup(struct dlm_ls *ls, int nodeid, char *name, int len, - unsigned int flags, int *r_nodeid, int *result); +int dlm_master_lookup(struct dlm_ls *ls, int from_nodeid, const char *name, + int len, unsigned int flags, int *r_nodeid, int *result); int dlm_search_rsb_tree(struct rb_root *tree, const void *name, int len, struct dlm_rsb **r_ret); @@ -36,8 +36,10 @@ void dlm_purge_mstcpy_locks(struct dlm_rsb *r); void dlm_recover_grant(struct dlm_ls *ls); int dlm_recover_waiters_post(struct dlm_ls *ls); void dlm_recover_waiters_pre(struct dlm_ls *ls); -int dlm_recover_master_copy(struct dlm_ls *ls, struct dlm_rcom *rc); -int dlm_recover_process_copy(struct dlm_ls *ls, struct dlm_rcom *rc); +int dlm_recover_master_copy(struct dlm_ls *ls, const struct dlm_rcom *rc, + __le32 *rl_remid, __le32 *rl_result); +int dlm_recover_process_copy(struct dlm_ls *ls, const struct dlm_rcom *rc, + uint64_t seq); int dlm_user_request(struct dlm_ls *ls, struct dlm_user_args *ua, int mode, uint32_t flags, void *name, unsigned int namelen); diff --git a/fs/dlm/lowcomms.c b/fs/dlm/lowcomms.c index 9f14ea9f6322..f7bc22e74db2 100644 --- a/fs/dlm/lowcomms.c +++ b/fs/dlm/lowcomms.c @@ -863,7 +863,6 @@ struct dlm_processed_nodes { static void process_dlm_messages(struct work_struct *work) { struct processqueue_entry *pentry; - LIST_HEAD(processed_nodes); spin_lock(&processqueue_lock); pentry = list_first_entry_or_null(&processqueue, diff --git a/fs/dlm/member.c b/fs/dlm/member.c index 77d202e4a02a..be7909ead71b 100644 --- a/fs/dlm/member.c +++ b/fs/dlm/member.c @@ -18,7 +18,7 @@ #include "midcomms.h" #include "lowcomms.h" -int dlm_slots_version(struct dlm_header *h) +int dlm_slots_version(const struct dlm_header *h) { if ((le32_to_cpu(h->h_version) & 0x0000FFFF) < DLM_HEADER_SLOTS) return 0; @@ -393,14 +393,9 @@ static void remove_remote_member(int nodeid) dlm_midcomms_remove_member(nodeid); } -static void clear_members_cb(int nodeid) -{ - remove_remote_member(nodeid); -} - void dlm_clear_members(struct dlm_ls *ls) { - clear_memb_list(&ls->ls_nodes, clear_members_cb); + clear_memb_list(&ls->ls_nodes, remove_remote_member); ls->ls_num_nodes = 0; } @@ -454,7 +449,7 @@ static void make_member_array(struct dlm_ls *ls) /* send a status request to all members just to establish comms connections */ -static int ping_members(struct dlm_ls *ls) +static int ping_members(struct dlm_ls *ls, uint64_t seq) { struct dlm_member *memb; int error = 0; @@ -464,7 +459,7 @@ static int ping_members(struct dlm_ls *ls) error = -EINTR; break; } - error = dlm_rcom_status(ls, memb->nodeid, 0); + error = dlm_rcom_status(ls, memb->nodeid, 0, seq); if (error) break; } @@ -612,7 +607,7 @@ int dlm_recover_members(struct dlm_ls *ls, struct dlm_recover *rv, int *neg_out) make_member_array(ls); *neg_out = neg; - error = ping_members(ls); + error = ping_members(ls, rv->seq); log_rinfo(ls, "dlm_recover_members %d nodes", ls->ls_num_nodes); return error; } diff --git a/fs/dlm/member.h b/fs/dlm/member.h index 433b2fac9f4a..f61cfde46314 100644 --- a/fs/dlm/member.h +++ b/fs/dlm/member.h @@ -18,7 +18,7 @@ void dlm_clear_members_gone(struct dlm_ls *ls); int dlm_recover_members(struct dlm_ls *ls, struct dlm_recover *rv,int *neg_out); int dlm_is_removed(struct dlm_ls *ls, int nodeid); int dlm_is_member(struct dlm_ls *ls, int nodeid); -int dlm_slots_version(struct dlm_header *h); +int dlm_slots_version(const struct dlm_header *h); void dlm_slot_save(struct dlm_ls *ls, struct dlm_rcom *rc, struct dlm_member *memb); void dlm_slots_copy_out(struct dlm_ls *ls, struct dlm_rcom *rc); diff --git a/fs/dlm/midcomms.c b/fs/dlm/midcomms.c index e1a0df67b566..f641b36a36db 100644 --- a/fs/dlm/midcomms.c +++ b/fs/dlm/midcomms.c @@ -330,18 +330,23 @@ static void midcomms_node_reset(struct midcomms_node *node) wake_up(&node->shutdown_wait); } -static struct midcomms_node *nodeid2node(int nodeid, gfp_t alloc) +static struct midcomms_node *nodeid2node(int nodeid) { - struct midcomms_node *node, *tmp; - int r = nodeid_hash(nodeid); + return __find_node(nodeid, nodeid_hash(nodeid)); +} + +int dlm_midcomms_addr(int nodeid, struct sockaddr_storage *addr, int len) +{ + int ret, r = nodeid_hash(nodeid); + struct midcomms_node *node; - node = __find_node(nodeid, r); - if (node || !alloc) - return node; + ret = dlm_lowcomms_addr(nodeid, addr, len); + if (ret) + return ret; - node = kmalloc(sizeof(*node), alloc); + node = kmalloc(sizeof(*node), GFP_NOFS); if (!node) - return NULL; + return -ENOMEM; node->nodeid = nodeid; spin_lock_init(&node->state_lock); @@ -353,21 +358,11 @@ static struct midcomms_node *nodeid2node(int nodeid, gfp_t alloc) midcomms_node_reset(node); spin_lock(&nodes_lock); - /* check again if there was somebody else - * earlier here to add the node - */ - tmp = __find_node(nodeid, r); - if (tmp) { - spin_unlock(&nodes_lock); - kfree(node); - return tmp; - } - hlist_add_head_rcu(&node->hlist, &node_hash[r]); spin_unlock(&nodes_lock); node->debugfs = dlm_create_debug_comms_file(nodeid, node); - return node; + return 0; } static int dlm_send_ack(int nodeid, uint32_t seq) @@ -499,7 +494,8 @@ static void dlm_pas_fin_ack_rcv(struct midcomms_node *node) spin_unlock(&node->state_lock); } -static void dlm_receive_buffer_3_2_trace(uint32_t seq, union dlm_packet *p) +static void dlm_receive_buffer_3_2_trace(uint32_t seq, + const union dlm_packet *p) { switch (p->header.h_cmd) { case DLM_MSG: @@ -513,7 +509,7 @@ static void dlm_receive_buffer_3_2_trace(uint32_t seq, union dlm_packet *p) } } -static void dlm_midcomms_receive_buffer(union dlm_packet *p, +static void dlm_midcomms_receive_buffer(const union dlm_packet *p, struct midcomms_node *node, uint32_t seq) { @@ -602,113 +598,8 @@ static void dlm_midcomms_receive_buffer(union dlm_packet *p, } } -static struct midcomms_node * -dlm_midcomms_recv_node_lookup(int nodeid, const union dlm_packet *p, - uint16_t msglen, int (*cb)(struct midcomms_node *node)) -{ - struct midcomms_node *node = NULL; - gfp_t allocation = 0; - int ret; - - switch (p->header.h_cmd) { - case DLM_RCOM: - if (msglen < sizeof(struct dlm_rcom)) { - log_print("rcom msg too small: %u, will skip this message from node %d", - msglen, nodeid); - return NULL; - } - - switch (p->rcom.rc_type) { - case cpu_to_le32(DLM_RCOM_NAMES): - fallthrough; - case cpu_to_le32(DLM_RCOM_NAMES_REPLY): - fallthrough; - case cpu_to_le32(DLM_RCOM_STATUS): - fallthrough; - case cpu_to_le32(DLM_RCOM_STATUS_REPLY): - node = nodeid2node(nodeid, 0); - if (node) { - spin_lock(&node->state_lock); - if (node->state != DLM_ESTABLISHED) - pr_debug("receive begin RCOM msg from node %d with state %s\n", - node->nodeid, dlm_state_str(node->state)); - - switch (node->state) { - case DLM_CLOSED: - node->state = DLM_ESTABLISHED; - pr_debug("switch node %d to state %s\n", - node->nodeid, dlm_state_str(node->state)); - break; - case DLM_ESTABLISHED: - break; - default: - spin_unlock(&node->state_lock); - return NULL; - } - spin_unlock(&node->state_lock); - } - - allocation = GFP_NOFS; - break; - default: - break; - } - - break; - default: - break; - } - - node = nodeid2node(nodeid, allocation); - if (!node) { - switch (p->header.h_cmd) { - case DLM_OPTS: - if (msglen < sizeof(struct dlm_opts)) { - log_print("opts msg too small: %u, will skip this message from node %d", - msglen, nodeid); - return NULL; - } - - log_print_ratelimited("received dlm opts message nextcmd %d from node %d in an invalid sequence", - p->opts.o_nextcmd, nodeid); - break; - default: - log_print_ratelimited("received dlm message cmd %d from node %d in an invalid sequence", - p->header.h_cmd, nodeid); - break; - } - - return NULL; - } - - ret = cb(node); - if (ret < 0) - return NULL; - - return node; -} - -static int dlm_midcomms_version_check_3_2(struct midcomms_node *node) -{ - switch (node->version) { - case DLM_VERSION_NOT_SET: - node->version = DLM_VERSION_3_2; - wake_up(&node->shutdown_wait); - log_print("version 0x%08x for node %d detected", DLM_VERSION_3_2, - node->nodeid); - break; - case DLM_VERSION_3_2: - break; - default: - log_print_ratelimited("version mismatch detected, assumed 0x%08x but node %d has 0x%08x", - DLM_VERSION_3_2, node->nodeid, node->version); - return -1; - } - - return 0; -} - -static int dlm_opts_check_msglen(union dlm_packet *p, uint16_t msglen, int nodeid) +static int dlm_opts_check_msglen(const union dlm_packet *p, uint16_t msglen, + int nodeid) { int len = msglen; @@ -757,7 +648,7 @@ static int dlm_opts_check_msglen(union dlm_packet *p, uint16_t msglen, int nodei return 0; } -static void dlm_midcomms_receive_buffer_3_2(union dlm_packet *p, int nodeid) +static void dlm_midcomms_receive_buffer_3_2(const union dlm_packet *p, int nodeid) { uint16_t msglen = le16_to_cpu(p->header.h_length); struct midcomms_node *node; @@ -765,10 +656,37 @@ static void dlm_midcomms_receive_buffer_3_2(union dlm_packet *p, int nodeid) int ret, idx; idx = srcu_read_lock(&nodes_srcu); - node = dlm_midcomms_recv_node_lookup(nodeid, p, msglen, - dlm_midcomms_version_check_3_2); - if (!node) + node = nodeid2node(nodeid); + if (WARN_ON_ONCE(!node)) + goto out; + + switch (node->version) { + case DLM_VERSION_NOT_SET: + node->version = DLM_VERSION_3_2; + wake_up(&node->shutdown_wait); + log_print("version 0x%08x for node %d detected", DLM_VERSION_3_2, + node->nodeid); + + spin_lock(&node->state_lock); + switch (node->state) { + case DLM_CLOSED: + node->state = DLM_ESTABLISHED; + pr_debug("switch node %d to state %s\n", + node->nodeid, dlm_state_str(node->state)); + break; + default: + break; + } + spin_unlock(&node->state_lock); + + break; + case DLM_VERSION_3_2: + break; + default: + log_print_ratelimited("version mismatch detected, assumed 0x%08x but node %d has 0x%08x", + DLM_VERSION_3_2, node->nodeid, node->version); goto out; + } switch (p->header.h_cmd) { case DLM_RCOM: @@ -858,8 +776,19 @@ out: srcu_read_unlock(&nodes_srcu, idx); } -static int dlm_midcomms_version_check_3_1(struct midcomms_node *node) +static void dlm_midcomms_receive_buffer_3_1(const union dlm_packet *p, int nodeid) { + uint16_t msglen = le16_to_cpu(p->header.h_length); + struct midcomms_node *node; + int idx; + + idx = srcu_read_lock(&nodes_srcu); + node = nodeid2node(nodeid); + if (WARN_ON_ONCE(!node)) { + srcu_read_unlock(&nodes_srcu, idx); + return; + } + switch (node->version) { case DLM_VERSION_NOT_SET: node->version = DLM_VERSION_3_1; @@ -872,22 +801,6 @@ static int dlm_midcomms_version_check_3_1(struct midcomms_node *node) default: log_print_ratelimited("version mismatch detected, assumed 0x%08x but node %d has 0x%08x", DLM_VERSION_3_1, node->nodeid, node->version); - return -1; - } - - return 0; -} - -static void dlm_midcomms_receive_buffer_3_1(union dlm_packet *p, int nodeid) -{ - uint16_t msglen = le16_to_cpu(p->header.h_length); - struct midcomms_node *node; - int idx; - - idx = srcu_read_lock(&nodes_srcu); - node = dlm_midcomms_recv_node_lookup(nodeid, p, msglen, - dlm_midcomms_version_check_3_1); - if (!node) { srcu_read_unlock(&nodes_srcu, idx); return; } @@ -977,10 +890,10 @@ int dlm_process_incoming_buffer(int nodeid, unsigned char *buf, int len) switch (hd->h_version) { case cpu_to_le32(DLM_VERSION_3_1): - dlm_midcomms_receive_buffer_3_1((union dlm_packet *)ptr, nodeid); + dlm_midcomms_receive_buffer_3_1((const union dlm_packet *)ptr, nodeid); break; case cpu_to_le32(DLM_VERSION_3_2): - dlm_midcomms_receive_buffer_3_2((union dlm_packet *)ptr, nodeid); + dlm_midcomms_receive_buffer_3_2((const union dlm_packet *)ptr, nodeid); break; default: log_print("received invalid version header: %u from node %d, will skip this message", @@ -1003,8 +916,8 @@ void dlm_midcomms_unack_msg_resend(int nodeid) int idx, ret; idx = srcu_read_lock(&nodes_srcu); - node = nodeid2node(nodeid, 0); - if (!node) { + node = nodeid2node(nodeid); + if (WARN_ON_ONCE(!node)) { srcu_read_unlock(&nodes_srcu, idx); return; } @@ -1090,11 +1003,9 @@ struct dlm_mhandle *dlm_midcomms_get_mhandle(int nodeid, int len, int idx; idx = srcu_read_lock(&nodes_srcu); - node = nodeid2node(nodeid, 0); - if (!node) { - WARN_ON_ONCE(1); + node = nodeid2node(nodeid); + if (WARN_ON_ONCE(!node)) goto err; - } /* this is a bug, however we going on and hope it will be resolved */ WARN_ON_ONCE(test_bit(DLM_NODE_FLAG_STOP_TX, &node->flags)); @@ -1235,8 +1146,34 @@ void dlm_midcomms_init(void) dlm_lowcomms_init(); } +static void midcomms_node_release(struct rcu_head *rcu) +{ + struct midcomms_node *node = container_of(rcu, struct midcomms_node, rcu); + + WARN_ON_ONCE(atomic_read(&node->send_queue_cnt)); + dlm_send_queue_flush(node); + kfree(node); +} + void dlm_midcomms_exit(void) { + struct midcomms_node *node; + int i, idx; + + idx = srcu_read_lock(&nodes_srcu); + for (i = 0; i < CONN_HASH_SIZE; i++) { + hlist_for_each_entry_rcu(node, &node_hash[i], hlist) { + dlm_delete_debug_comms_file(node->debugfs); + + spin_lock(&nodes_lock); + hlist_del_rcu(&node->hlist); + spin_unlock(&nodes_lock); + + call_srcu(&nodes_srcu, &node->rcu, midcomms_node_release); + } + } + srcu_read_unlock(&nodes_srcu, idx); + dlm_lowcomms_exit(); } @@ -1277,8 +1214,8 @@ void dlm_midcomms_add_member(int nodeid) int idx; idx = srcu_read_lock(&nodes_srcu); - node = nodeid2node(nodeid, GFP_NOFS); - if (!node) { + node = nodeid2node(nodeid); + if (WARN_ON_ONCE(!node)) { srcu_read_unlock(&nodes_srcu, idx); return; } @@ -1322,8 +1259,8 @@ void dlm_midcomms_remove_member(int nodeid) int idx; idx = srcu_read_lock(&nodes_srcu); - node = nodeid2node(nodeid, 0); - if (!node) { + node = nodeid2node(nodeid); + if (WARN_ON_ONCE(!node)) { srcu_read_unlock(&nodes_srcu, idx); return; } @@ -1367,15 +1304,6 @@ void dlm_midcomms_remove_member(int nodeid) srcu_read_unlock(&nodes_srcu, idx); } -static void midcomms_node_release(struct rcu_head *rcu) -{ - struct midcomms_node *node = container_of(rcu, struct midcomms_node, rcu); - - WARN_ON_ONCE(atomic_read(&node->send_queue_cnt)); - dlm_send_queue_flush(node); - kfree(node); -} - void dlm_midcomms_version_wait(void) { struct midcomms_node *node; @@ -1438,7 +1366,7 @@ static void midcomms_shutdown(struct midcomms_node *node) node->state == DLM_CLOSED || test_bit(DLM_NODE_FLAG_CLOSE, &node->flags), DLM_SHUTDOWN_TIMEOUT); - if (!ret || test_bit(DLM_NODE_FLAG_CLOSE, &node->flags)) + if (!ret) pr_debug("active shutdown timed out for node %d with state %s\n", node->nodeid, dlm_state_str(node->state)); else @@ -1456,14 +1384,6 @@ void dlm_midcomms_shutdown(void) for (i = 0; i < CONN_HASH_SIZE; i++) { hlist_for_each_entry_rcu(node, &node_hash[i], hlist) { midcomms_shutdown(node); - - dlm_delete_debug_comms_file(node->debugfs); - - spin_lock(&nodes_lock); - hlist_del_rcu(&node->hlist); - spin_unlock(&nodes_lock); - - call_srcu(&nodes_srcu, &node->rcu, midcomms_node_release); } } srcu_read_unlock(&nodes_srcu, idx); @@ -1479,7 +1399,7 @@ int dlm_midcomms_close(int nodeid) idx = srcu_read_lock(&nodes_srcu); /* Abort pending close/remove operation */ - node = nodeid2node(nodeid, 0); + node = nodeid2node(nodeid); if (node) { /* let shutdown waiters leave */ set_bit(DLM_NODE_FLAG_CLOSE, &node->flags); @@ -1489,20 +1409,32 @@ int dlm_midcomms_close(int nodeid) synchronize_srcu(&nodes_srcu); - idx = srcu_read_lock(&nodes_srcu); mutex_lock(&close_lock); - node = nodeid2node(nodeid, 0); + idx = srcu_read_lock(&nodes_srcu); + node = nodeid2node(nodeid); if (!node) { - mutex_unlock(&close_lock); srcu_read_unlock(&nodes_srcu, idx); + mutex_unlock(&close_lock); return dlm_lowcomms_close(nodeid); } ret = dlm_lowcomms_close(nodeid); - spin_lock(&node->state_lock); - midcomms_node_reset(node); - spin_unlock(&node->state_lock); + dlm_delete_debug_comms_file(node->debugfs); + + spin_lock(&nodes_lock); + hlist_del_rcu(&node->hlist); + spin_unlock(&nodes_lock); srcu_read_unlock(&nodes_srcu, idx); + + /* wait that all readers left until flush send queue */ + synchronize_srcu(&nodes_srcu); + + /* drop all pending dlm messages, this is fine as + * this function get called when the node is fenced + */ + dlm_send_queue_flush(node); + + call_srcu(&nodes_srcu, &node->rcu, midcomms_node_release); mutex_unlock(&close_lock); return ret; diff --git a/fs/dlm/midcomms.h b/fs/dlm/midcomms.h index 9f8c9605013d..e7246fb3ef57 100644 --- a/fs/dlm/midcomms.h +++ b/fs/dlm/midcomms.h @@ -20,6 +20,7 @@ struct dlm_mhandle *dlm_midcomms_get_mhandle(int nodeid, int len, gfp_t allocation, char **ppc); void dlm_midcomms_commit_mhandle(struct dlm_mhandle *mh, const void *name, int namelen); +int dlm_midcomms_addr(int nodeid, struct sockaddr_storage *addr, int len); void dlm_midcomms_version_wait(void); int dlm_midcomms_close(int nodeid); int dlm_midcomms_start(void); diff --git a/fs/dlm/plock.c b/fs/dlm/plock.c index 70a4752ed913..e6b4c1a21446 100644 --- a/fs/dlm/plock.c +++ b/fs/dlm/plock.c @@ -11,6 +11,8 @@ #include <linux/dlm_plock.h> #include <linux/slab.h> +#include <trace/events/dlm.h> + #include "dlm_internal.h" #include "lockspace.h" @@ -42,6 +44,27 @@ static inline void set_version(struct dlm_plock_info *info) info->version[2] = DLM_PLOCK_VERSION_PATCH; } +static struct plock_op *plock_lookup_waiter(const struct dlm_plock_info *info) +{ + struct plock_op *op = NULL, *iter; + + list_for_each_entry(iter, &recv_list, list) { + if (iter->info.fsid == info->fsid && + iter->info.number == info->number && + iter->info.owner == info->owner && + iter->info.pid == info->pid && + iter->info.start == info->start && + iter->info.end == info->end && + iter->info.ex == info->ex && + iter->info.wait) { + op = iter; + break; + } + } + + return op; +} + static int check_version(struct dlm_plock_info *info) { if ((DLM_PLOCK_VERSION_MAJOR != info->version[0]) || @@ -74,30 +97,26 @@ static void send_op(struct plock_op *op) wake_up(&send_wq); } -/* If a process was killed while waiting for the only plock on a file, - locks_remove_posix will not see any lock on the file so it won't - send an unlock-close to us to pass on to userspace to clean up the - abandoned waiter. So, we have to insert the unlock-close when the - lock call is interrupted. */ - -static void do_unlock_close(const struct dlm_plock_info *info) +static int do_lock_cancel(const struct dlm_plock_info *orig_info) { struct plock_op *op; + int rv; op = kzalloc(sizeof(*op), GFP_NOFS); if (!op) - return; + return -ENOMEM; + + op->info = *orig_info; + op->info.optype = DLM_PLOCK_OP_CANCEL; + op->info.wait = 0; - op->info.optype = DLM_PLOCK_OP_UNLOCK; - op->info.pid = info->pid; - op->info.fsid = info->fsid; - op->info.number = info->number; - op->info.start = 0; - op->info.end = OFFSET_MAX; - op->info.owner = info->owner; - - op->info.flags |= DLM_PLOCK_FL_CLOSE; send_op(op); + wait_event(recv_wq, (op->done != 0)); + + rv = op->info.rv; + + dlm_release_plock_op(op); + return rv; } int dlm_posix_lock(dlm_lockspace_t *lockspace, u64 number, struct file *file, @@ -156,7 +175,7 @@ int dlm_posix_lock(dlm_lockspace_t *lockspace, u64 number, struct file *file, send_op(op); if (op->info.wait) { - rv = wait_event_killable(recv_wq, (op->done != 0)); + rv = wait_event_interruptible(recv_wq, (op->done != 0)); if (rv == -ERESTARTSYS) { spin_lock(&ops_lock); /* recheck under ops_lock if we got a done != 0, @@ -166,17 +185,37 @@ int dlm_posix_lock(dlm_lockspace_t *lockspace, u64 number, struct file *file, spin_unlock(&ops_lock); goto do_lock_wait; } - list_del(&op->list); spin_unlock(&ops_lock); + rv = do_lock_cancel(&op->info); + switch (rv) { + case 0: + /* waiter was deleted in user space, answer will never come + * remove original request. The original request must be + * on recv_list because the answer of do_lock_cancel() + * synchronized it. + */ + spin_lock(&ops_lock); + list_del(&op->list); + spin_unlock(&ops_lock); + rv = -EINTR; + break; + case -ENOENT: + /* cancellation wasn't successful but op should be done */ + fallthrough; + default: + /* internal error doing cancel we need to wait */ + goto wait; + } + log_debug(ls, "%s: wait interrupted %x %llx pid %d", __func__, ls->ls_global_id, (unsigned long long)number, op->info.pid); - do_unlock_close(&op->info); dlm_release_plock_op(op); goto out; } } else { +wait: wait_event(recv_wq, (op->done != 0)); } @@ -240,8 +279,8 @@ static int dlm_plock_callback(struct plock_op *op) rv = notify(fl, 0); if (rv) { /* XXX: We need to cancel the fs lock here: */ - log_print("dlm_plock_callback: lock granted after lock request " - "failed; dangling lock!\n"); + log_print("%s: lock granted after lock request failed; dangling lock!", + __func__); goto out; } @@ -318,6 +357,75 @@ out: } EXPORT_SYMBOL_GPL(dlm_posix_unlock); +/* + * NOTE: This implementation can only handle async lock requests as nfs + * do it. It cannot handle cancellation of a pending lock request sitting + * in wait_event(), but for now only nfs is the only user local kernel + * user. + */ +int dlm_posix_cancel(dlm_lockspace_t *lockspace, u64 number, struct file *file, + struct file_lock *fl) +{ + struct dlm_plock_info info; + struct plock_op *op; + struct dlm_ls *ls; + int rv; + + /* this only works for async request for now and nfs is the only + * kernel user right now. + */ + if (WARN_ON_ONCE(!fl->fl_lmops || !fl->fl_lmops->lm_grant)) + return -EOPNOTSUPP; + + ls = dlm_find_lockspace_local(lockspace); + if (!ls) + return -EINVAL; + + memset(&info, 0, sizeof(info)); + info.pid = fl->fl_pid; + info.ex = (fl->fl_type == F_WRLCK); + info.fsid = ls->ls_global_id; + dlm_put_lockspace(ls); + info.number = number; + info.start = fl->fl_start; + info.end = fl->fl_end; + info.owner = (__u64)fl->fl_pid; + + rv = do_lock_cancel(&info); + switch (rv) { + case 0: + spin_lock(&ops_lock); + /* lock request to cancel must be on recv_list because + * do_lock_cancel() synchronizes it. + */ + op = plock_lookup_waiter(&info); + if (WARN_ON_ONCE(!op)) { + spin_unlock(&ops_lock); + rv = -ENOLCK; + break; + } + + list_del(&op->list); + spin_unlock(&ops_lock); + WARN_ON(op->info.optype != DLM_PLOCK_OP_LOCK); + op->data->callback(op->data->fl, -EINTR); + dlm_release_plock_op(op); + rv = -EINTR; + break; + case -ENOENT: + /* if cancel wasn't successful we probably were to late + * or it was a non-blocking lock request, so just unlock it. + */ + rv = dlm_posix_unlock(lockspace, number, file, fl); + break; + default: + break; + } + + return rv; +} +EXPORT_SYMBOL_GPL(dlm_posix_cancel); + int dlm_posix_get(dlm_lockspace_t *lockspace, u64 number, struct file *file, struct file_lock *fl) { @@ -403,6 +511,8 @@ static ssize_t dev_read(struct file *file, char __user *u, size_t count, if (!op) return -EAGAIN; + trace_dlm_plock_read(&info); + /* there is no need to get a reply from userspace for unlocks that were generated by the vfs cleaning up for a close (the process did not make an unlock call). */ @@ -430,6 +540,8 @@ static ssize_t dev_write(struct file *file, const char __user *u, size_t count, if (copy_from_user(&info, u, sizeof(info))) return -EFAULT; + trace_dlm_plock_write(&info); + if (check_version(&info)) return -EINVAL; @@ -441,22 +553,11 @@ static ssize_t dev_write(struct file *file, const char __user *u, size_t count, */ spin_lock(&ops_lock); if (info.wait) { - list_for_each_entry(iter, &recv_list, list) { - if (iter->info.fsid == info.fsid && - iter->info.number == info.number && - iter->info.owner == info.owner && - iter->info.pid == info.pid && - iter->info.start == info.start && - iter->info.end == info.end && - iter->info.ex == info.ex && - iter->info.wait) { - op = iter; - break; - } - } + op = plock_lookup_waiter(&info); } else { list_for_each_entry(iter, &recv_list, list) { - if (!iter->info.wait) { + if (!iter->info.wait && + iter->info.fsid == info.fsid) { op = iter; break; } @@ -468,8 +569,7 @@ static ssize_t dev_write(struct file *file, const char __user *u, size_t count, if (info.wait) WARN_ON(op->info.optype != DLM_PLOCK_OP_LOCK); else - WARN_ON(op->info.fsid != info.fsid || - op->info.number != info.number || + WARN_ON(op->info.number != info.number || op->info.owner != info.owner || op->info.optype != info.optype); @@ -534,5 +634,7 @@ int dlm_plock_init(void) void dlm_plock_exit(void) { misc_deregister(&plock_dev_misc); + WARN_ON(!list_empty(&send_list)); + WARN_ON(!list_empty(&recv_list)); } diff --git a/fs/dlm/rcom.c b/fs/dlm/rcom.c index f4afdf892f78..3b734aed26b5 100644 --- a/fs/dlm/rcom.c +++ b/fs/dlm/rcom.c @@ -28,7 +28,8 @@ static int rcom_response(struct dlm_ls *ls) } static void _create_rcom(struct dlm_ls *ls, int to_nodeid, int type, int len, - struct dlm_rcom **rc_ret, char *mb, int mb_len) + struct dlm_rcom **rc_ret, char *mb, int mb_len, + uint64_t seq) { struct dlm_rcom *rc; @@ -41,16 +42,14 @@ static void _create_rcom(struct dlm_ls *ls, int to_nodeid, int type, int len, rc->rc_header.h_cmd = DLM_RCOM; rc->rc_type = cpu_to_le32(type); - - spin_lock(&ls->ls_recover_lock); - rc->rc_seq = cpu_to_le64(ls->ls_recover_seq); - spin_unlock(&ls->ls_recover_lock); + rc->rc_seq = cpu_to_le64(seq); *rc_ret = rc; } static int create_rcom(struct dlm_ls *ls, int to_nodeid, int type, int len, - struct dlm_rcom **rc_ret, struct dlm_mhandle **mh_ret) + struct dlm_rcom **rc_ret, struct dlm_mhandle **mh_ret, + uint64_t seq) { int mb_len = sizeof(struct dlm_rcom) + len; struct dlm_mhandle *mh; @@ -63,14 +62,14 @@ static int create_rcom(struct dlm_ls *ls, int to_nodeid, int type, int len, return -ENOBUFS; } - _create_rcom(ls, to_nodeid, type, len, rc_ret, mb, mb_len); + _create_rcom(ls, to_nodeid, type, len, rc_ret, mb, mb_len, seq); *mh_ret = mh; return 0; } static int create_rcom_stateless(struct dlm_ls *ls, int to_nodeid, int type, int len, struct dlm_rcom **rc_ret, - struct dlm_msg **msg_ret) + struct dlm_msg **msg_ret, uint64_t seq) { int mb_len = sizeof(struct dlm_rcom) + len; struct dlm_msg *msg; @@ -84,7 +83,7 @@ static int create_rcom_stateless(struct dlm_ls *ls, int to_nodeid, int type, return -ENOBUFS; } - _create_rcom(ls, to_nodeid, type, len, rc_ret, mb, mb_len); + _create_rcom(ls, to_nodeid, type, len, rc_ret, mb, mb_len, seq); *msg_ret = msg; return 0; } @@ -170,7 +169,8 @@ static void disallow_sync_reply(struct dlm_ls *ls) * node's rcom_config. */ -int dlm_rcom_status(struct dlm_ls *ls, int nodeid, uint32_t status_flags) +int dlm_rcom_status(struct dlm_ls *ls, int nodeid, uint32_t status_flags, + uint64_t seq) { struct dlm_rcom *rc; struct dlm_msg *msg; @@ -186,7 +186,8 @@ int dlm_rcom_status(struct dlm_ls *ls, int nodeid, uint32_t status_flags) retry: error = create_rcom_stateless(ls, nodeid, DLM_RCOM_STATUS, - sizeof(struct rcom_status), &rc, &msg); + sizeof(struct rcom_status), &rc, &msg, + seq); if (error) goto out; @@ -220,7 +221,9 @@ retry: return error; } -static void receive_rcom_status(struct dlm_ls *ls, struct dlm_rcom *rc_in) +static void receive_rcom_status(struct dlm_ls *ls, + const struct dlm_rcom *rc_in, + uint64_t seq) { struct dlm_rcom *rc; struct rcom_status *rs; @@ -251,7 +254,7 @@ static void receive_rcom_status(struct dlm_ls *ls, struct dlm_rcom *rc_in) do_create: error = create_rcom_stateless(ls, nodeid, DLM_RCOM_STATUS_REPLY, - len, &rc, &msg); + len, &rc, &msg, seq); if (error) return; @@ -281,7 +284,7 @@ static void receive_rcom_status(struct dlm_ls *ls, struct dlm_rcom *rc_in) send_rcom_stateless(msg, rc); } -static void receive_sync_reply(struct dlm_ls *ls, struct dlm_rcom *rc_in) +static void receive_sync_reply(struct dlm_ls *ls, const struct dlm_rcom *rc_in) { spin_lock(&ls->ls_rcom_spin); if (!test_bit(LSFL_RCOM_WAIT, &ls->ls_flags) || @@ -302,17 +305,18 @@ static void receive_sync_reply(struct dlm_ls *ls, struct dlm_rcom *rc_in) spin_unlock(&ls->ls_rcom_spin); } -int dlm_rcom_names(struct dlm_ls *ls, int nodeid, char *last_name, int last_len) +int dlm_rcom_names(struct dlm_ls *ls, int nodeid, char *last_name, + int last_len, uint64_t seq) { + struct dlm_mhandle *mh; struct dlm_rcom *rc; - struct dlm_msg *msg; int error = 0; ls->ls_recover_nodeid = nodeid; retry: - error = create_rcom_stateless(ls, nodeid, DLM_RCOM_NAMES, last_len, - &rc, &msg); + error = create_rcom(ls, nodeid, DLM_RCOM_NAMES, last_len, + &rc, &mh, seq); if (error) goto out; memcpy(rc->rc_buf, last_name, last_len); @@ -320,7 +324,7 @@ retry: allow_sync_reply(ls, &rc->rc_id); memset(ls->ls_recover_buf, 0, DLM_MAX_SOCKET_BUFSIZE); - send_rcom_stateless(msg, rc); + send_rcom(mh, rc); error = dlm_wait_function(ls, &rcom_response); disallow_sync_reply(ls); @@ -330,19 +334,20 @@ retry: return error; } -static void receive_rcom_names(struct dlm_ls *ls, struct dlm_rcom *rc_in) +static void receive_rcom_names(struct dlm_ls *ls, const struct dlm_rcom *rc_in, + uint64_t seq) { + struct dlm_mhandle *mh; struct dlm_rcom *rc; int error, inlen, outlen, nodeid; - struct dlm_msg *msg; nodeid = le32_to_cpu(rc_in->rc_header.h_nodeid); inlen = le16_to_cpu(rc_in->rc_header.h_length) - sizeof(struct dlm_rcom); outlen = DLM_MAX_APP_BUFSIZE - sizeof(struct dlm_rcom); - error = create_rcom_stateless(ls, nodeid, DLM_RCOM_NAMES_REPLY, outlen, - &rc, &msg); + error = create_rcom(ls, nodeid, DLM_RCOM_NAMES_REPLY, outlen, + &rc, &mh, seq); if (error) return; rc->rc_id = rc_in->rc_id; @@ -350,10 +355,10 @@ static void receive_rcom_names(struct dlm_ls *ls, struct dlm_rcom *rc_in) dlm_copy_master_names(ls, rc_in->rc_buf, inlen, rc->rc_buf, outlen, nodeid); - send_rcom_stateless(msg, rc); + send_rcom(mh, rc); } -int dlm_send_rcom_lookup(struct dlm_rsb *r, int dir_nodeid) +int dlm_send_rcom_lookup(struct dlm_rsb *r, int dir_nodeid, uint64_t seq) { struct dlm_rcom *rc; struct dlm_mhandle *mh; @@ -361,7 +366,7 @@ int dlm_send_rcom_lookup(struct dlm_rsb *r, int dir_nodeid) int error; error = create_rcom(ls, dir_nodeid, DLM_RCOM_LOOKUP, r->res_length, - &rc, &mh); + &rc, &mh, seq); if (error) goto out; memcpy(rc->rc_buf, r->res_name, r->res_length); @@ -372,7 +377,8 @@ int dlm_send_rcom_lookup(struct dlm_rsb *r, int dir_nodeid) return error; } -static void receive_rcom_lookup(struct dlm_ls *ls, struct dlm_rcom *rc_in) +static void receive_rcom_lookup(struct dlm_ls *ls, + const struct dlm_rcom *rc_in, uint64_t seq) { struct dlm_rcom *rc; struct dlm_mhandle *mh; @@ -387,7 +393,8 @@ static void receive_rcom_lookup(struct dlm_ls *ls, struct dlm_rcom *rc_in) return; } - error = create_rcom(ls, nodeid, DLM_RCOM_LOOKUP_REPLY, 0, &rc, &mh); + error = create_rcom(ls, nodeid, DLM_RCOM_LOOKUP_REPLY, 0, &rc, &mh, + seq); if (error) return; @@ -402,7 +409,8 @@ static void receive_rcom_lookup(struct dlm_ls *ls, struct dlm_rcom *rc_in) send_rcom(mh, rc); } -static void receive_rcom_lookup_reply(struct dlm_ls *ls, struct dlm_rcom *rc_in) +static void receive_rcom_lookup_reply(struct dlm_ls *ls, + const struct dlm_rcom *rc_in) { dlm_recover_master_reply(ls, rc_in); } @@ -437,7 +445,7 @@ static void pack_rcom_lock(struct dlm_rsb *r, struct dlm_lkb *lkb, memcpy(rl->rl_lvb, lkb->lkb_lvbptr, r->res_ls->ls_lvblen); } -int dlm_send_rcom_lock(struct dlm_rsb *r, struct dlm_lkb *lkb) +int dlm_send_rcom_lock(struct dlm_rsb *r, struct dlm_lkb *lkb, uint64_t seq) { struct dlm_ls *ls = r->res_ls; struct dlm_rcom *rc; @@ -448,7 +456,8 @@ int dlm_send_rcom_lock(struct dlm_rsb *r, struct dlm_lkb *lkb) if (lkb->lkb_lvbptr) len += ls->ls_lvblen; - error = create_rcom(ls, r->res_nodeid, DLM_RCOM_LOCK, len, &rc, &mh); + error = create_rcom(ls, r->res_nodeid, DLM_RCOM_LOCK, len, &rc, &mh, + seq); if (error) goto out; @@ -462,23 +471,28 @@ int dlm_send_rcom_lock(struct dlm_rsb *r, struct dlm_lkb *lkb) } /* needs at least dlm_rcom + rcom_lock */ -static void receive_rcom_lock(struct dlm_ls *ls, struct dlm_rcom *rc_in) +static void receive_rcom_lock(struct dlm_ls *ls, const struct dlm_rcom *rc_in, + uint64_t seq) { + __le32 rl_remid, rl_result; + struct rcom_lock *rl; struct dlm_rcom *rc; struct dlm_mhandle *mh; int error, nodeid = le32_to_cpu(rc_in->rc_header.h_nodeid); - dlm_recover_master_copy(ls, rc_in); + dlm_recover_master_copy(ls, rc_in, &rl_remid, &rl_result); error = create_rcom(ls, nodeid, DLM_RCOM_LOCK_REPLY, - sizeof(struct rcom_lock), &rc, &mh); + sizeof(struct rcom_lock), &rc, &mh, seq); if (error) return; - /* We send back the same rcom_lock struct we received, but - dlm_recover_master_copy() has filled in rl_remid and rl_result */ - memcpy(rc->rc_buf, rc_in->rc_buf, sizeof(struct rcom_lock)); + rl = (struct rcom_lock *)rc->rc_buf; + /* set rl_remid and rl_result from dlm_recover_master_copy() */ + rl->rl_remid = rl_remid; + rl->rl_result = rl_result; + rc->rc_id = rc_in->rc_id; rc->rc_seq_reply = rc_in->rc_seq; @@ -488,7 +502,7 @@ static void receive_rcom_lock(struct dlm_ls *ls, struct dlm_rcom *rc_in) /* If the lockspace doesn't exist then still send a status message back; it's possible that it just doesn't have its global_id yet. */ -int dlm_send_ls_not_ready(int nodeid, struct dlm_rcom *rc_in) +int dlm_send_ls_not_ready(int nodeid, const struct dlm_rcom *rc_in) { struct dlm_rcom *rc; struct rcom_config *rf; @@ -566,7 +580,7 @@ int dlm_send_ls_not_ready(int nodeid, struct dlm_rcom *rc_in) /* Called by dlm_recv; corresponds to dlm_receive_message() but special recovery-only comms are sent through here. */ -void dlm_receive_rcom(struct dlm_ls *ls, struct dlm_rcom *rc, int nodeid) +void dlm_receive_rcom(struct dlm_ls *ls, const struct dlm_rcom *rc, int nodeid) { int lock_size = sizeof(struct dlm_rcom) + sizeof(struct rcom_lock); int stop, reply = 0, names = 0, lookup = 0, lock = 0; @@ -620,21 +634,21 @@ void dlm_receive_rcom(struct dlm_ls *ls, struct dlm_rcom *rc, int nodeid) switch (rc->rc_type) { case cpu_to_le32(DLM_RCOM_STATUS): - receive_rcom_status(ls, rc); + receive_rcom_status(ls, rc, seq); break; case cpu_to_le32(DLM_RCOM_NAMES): - receive_rcom_names(ls, rc); + receive_rcom_names(ls, rc, seq); break; case cpu_to_le32(DLM_RCOM_LOOKUP): - receive_rcom_lookup(ls, rc); + receive_rcom_lookup(ls, rc, seq); break; case cpu_to_le32(DLM_RCOM_LOCK): if (le16_to_cpu(rc->rc_header.h_length) < lock_size) goto Eshort; - receive_rcom_lock(ls, rc); + receive_rcom_lock(ls, rc, seq); break; case cpu_to_le32(DLM_RCOM_STATUS_REPLY): @@ -652,7 +666,7 @@ void dlm_receive_rcom(struct dlm_ls *ls, struct dlm_rcom *rc, int nodeid) case cpu_to_le32(DLM_RCOM_LOCK_REPLY): if (le16_to_cpu(rc->rc_header.h_length) < lock_size) goto Eshort; - dlm_recover_process_copy(ls, rc); + dlm_recover_process_copy(ls, rc, seq); break; default: diff --git a/fs/dlm/rcom.h b/fs/dlm/rcom.h index 454d3c4814ab..765926ae0020 100644 --- a/fs/dlm/rcom.h +++ b/fs/dlm/rcom.h @@ -12,12 +12,15 @@ #ifndef __RCOM_DOT_H__ #define __RCOM_DOT_H__ -int dlm_rcom_status(struct dlm_ls *ls, int nodeid, uint32_t status_flags); -int dlm_rcom_names(struct dlm_ls *ls, int nodeid, char *last_name,int last_len); -int dlm_send_rcom_lookup(struct dlm_rsb *r, int dir_nodeid); -int dlm_send_rcom_lock(struct dlm_rsb *r, struct dlm_lkb *lkb); -void dlm_receive_rcom(struct dlm_ls *ls, struct dlm_rcom *rc, int nodeid); -int dlm_send_ls_not_ready(int nodeid, struct dlm_rcom *rc_in); +int dlm_rcom_status(struct dlm_ls *ls, int nodeid, uint32_t status_flags, + uint64_t seq); +int dlm_rcom_names(struct dlm_ls *ls, int nodeid, char *last_name, + int last_len, uint64_t seq); +int dlm_send_rcom_lookup(struct dlm_rsb *r, int dir_nodeid, uint64_t seq); +int dlm_send_rcom_lock(struct dlm_rsb *r, struct dlm_lkb *lkb, uint64_t seq); +void dlm_receive_rcom(struct dlm_ls *ls, const struct dlm_rcom *rc, + int nodeid); +int dlm_send_ls_not_ready(int nodeid, const struct dlm_rcom *rc_in); #endif diff --git a/fs/dlm/recover.c b/fs/dlm/recover.c index 29d71a5018d4..53917c0aa3c0 100644 --- a/fs/dlm/recover.c +++ b/fs/dlm/recover.c @@ -93,7 +93,7 @@ void dlm_set_recover_status(struct dlm_ls *ls, uint32_t status) } static int wait_status_all(struct dlm_ls *ls, uint32_t wait_status, - int save_slots) + int save_slots, uint64_t seq) { struct dlm_rcom *rc = ls->ls_recover_buf; struct dlm_member *memb; @@ -107,7 +107,7 @@ static int wait_status_all(struct dlm_ls *ls, uint32_t wait_status, goto out; } - error = dlm_rcom_status(ls, memb->nodeid, 0); + error = dlm_rcom_status(ls, memb->nodeid, 0, seq); if (error) goto out; @@ -126,7 +126,7 @@ static int wait_status_all(struct dlm_ls *ls, uint32_t wait_status, } static int wait_status_low(struct dlm_ls *ls, uint32_t wait_status, - uint32_t status_flags) + uint32_t status_flags, uint64_t seq) { struct dlm_rcom *rc = ls->ls_recover_buf; int error = 0, delay = 0, nodeid = ls->ls_low_nodeid; @@ -137,7 +137,7 @@ static int wait_status_low(struct dlm_ls *ls, uint32_t wait_status, goto out; } - error = dlm_rcom_status(ls, nodeid, status_flags); + error = dlm_rcom_status(ls, nodeid, status_flags, seq); if (error) break; @@ -151,22 +151,22 @@ static int wait_status_low(struct dlm_ls *ls, uint32_t wait_status, return error; } -static int wait_status(struct dlm_ls *ls, uint32_t status) +static int wait_status(struct dlm_ls *ls, uint32_t status, uint64_t seq) { uint32_t status_all = status << 1; int error; if (ls->ls_low_nodeid == dlm_our_nodeid()) { - error = wait_status_all(ls, status, 0); + error = wait_status_all(ls, status, 0, seq); if (!error) dlm_set_recover_status(ls, status_all); } else - error = wait_status_low(ls, status_all, 0); + error = wait_status_low(ls, status_all, 0, seq); return error; } -int dlm_recover_members_wait(struct dlm_ls *ls) +int dlm_recover_members_wait(struct dlm_ls *ls, uint64_t seq) { struct dlm_member *memb; struct dlm_slot *slots; @@ -180,7 +180,7 @@ int dlm_recover_members_wait(struct dlm_ls *ls) } if (ls->ls_low_nodeid == dlm_our_nodeid()) { - error = wait_status_all(ls, DLM_RS_NODES, 1); + error = wait_status_all(ls, DLM_RS_NODES, 1, seq); if (error) goto out; @@ -199,7 +199,8 @@ int dlm_recover_members_wait(struct dlm_ls *ls) dlm_set_recover_status(ls, DLM_RS_NODES_ALL); } } else { - error = wait_status_low(ls, DLM_RS_NODES_ALL, DLM_RSF_NEED_SLOTS); + error = wait_status_low(ls, DLM_RS_NODES_ALL, + DLM_RSF_NEED_SLOTS, seq); if (error) goto out; @@ -209,19 +210,19 @@ int dlm_recover_members_wait(struct dlm_ls *ls) return error; } -int dlm_recover_directory_wait(struct dlm_ls *ls) +int dlm_recover_directory_wait(struct dlm_ls *ls, uint64_t seq) { - return wait_status(ls, DLM_RS_DIR); + return wait_status(ls, DLM_RS_DIR, seq); } -int dlm_recover_locks_wait(struct dlm_ls *ls) +int dlm_recover_locks_wait(struct dlm_ls *ls, uint64_t seq) { - return wait_status(ls, DLM_RS_LOCKS); + return wait_status(ls, DLM_RS_LOCKS, seq); } -int dlm_recover_done_wait(struct dlm_ls *ls) +int dlm_recover_done_wait(struct dlm_ls *ls, uint64_t seq) { - return wait_status(ls, DLM_RS_DONE); + return wait_status(ls, DLM_RS_DONE, seq); } /* @@ -441,7 +442,7 @@ static void set_new_master(struct dlm_rsb *r) * equals our_nodeid below). */ -static int recover_master(struct dlm_rsb *r, unsigned int *count) +static int recover_master(struct dlm_rsb *r, unsigned int *count, uint64_t seq) { struct dlm_ls *ls = r->res_ls; int our_nodeid, dir_nodeid; @@ -472,7 +473,7 @@ static int recover_master(struct dlm_rsb *r, unsigned int *count) error = 0; } else { recover_idr_add(r); - error = dlm_send_rcom_lookup(r, dir_nodeid); + error = dlm_send_rcom_lookup(r, dir_nodeid, seq); } (*count)++; @@ -520,7 +521,7 @@ static int recover_master_static(struct dlm_rsb *r, unsigned int *count) * the correct dir node. */ -int dlm_recover_masters(struct dlm_ls *ls) +int dlm_recover_masters(struct dlm_ls *ls, uint64_t seq) { struct dlm_rsb *r; unsigned int total = 0; @@ -542,7 +543,7 @@ int dlm_recover_masters(struct dlm_ls *ls) if (nodir) error = recover_master_static(r, &count); else - error = recover_master(r, &count); + error = recover_master(r, &count, seq); unlock_rsb(r); cond_resched(); total++; @@ -563,7 +564,7 @@ int dlm_recover_masters(struct dlm_ls *ls) return error; } -int dlm_recover_master_reply(struct dlm_ls *ls, struct dlm_rcom *rc) +int dlm_recover_master_reply(struct dlm_ls *ls, const struct dlm_rcom *rc) { struct dlm_rsb *r; int ret_nodeid, new_master; @@ -614,13 +615,14 @@ int dlm_recover_master_reply(struct dlm_ls *ls, struct dlm_rcom *rc) * an equal number of replies then recovery for the rsb is done */ -static int recover_locks_queue(struct dlm_rsb *r, struct list_head *head) +static int recover_locks_queue(struct dlm_rsb *r, struct list_head *head, + uint64_t seq) { struct dlm_lkb *lkb; int error = 0; list_for_each_entry(lkb, head, lkb_statequeue) { - error = dlm_send_rcom_lock(r, lkb); + error = dlm_send_rcom_lock(r, lkb, seq); if (error) break; r->res_recover_locks_count++; @@ -629,7 +631,7 @@ static int recover_locks_queue(struct dlm_rsb *r, struct list_head *head) return error; } -static int recover_locks(struct dlm_rsb *r) +static int recover_locks(struct dlm_rsb *r, uint64_t seq) { int error = 0; @@ -637,13 +639,13 @@ static int recover_locks(struct dlm_rsb *r) DLM_ASSERT(!r->res_recover_locks_count, dlm_dump_rsb(r);); - error = recover_locks_queue(r, &r->res_grantqueue); + error = recover_locks_queue(r, &r->res_grantqueue, seq); if (error) goto out; - error = recover_locks_queue(r, &r->res_convertqueue); + error = recover_locks_queue(r, &r->res_convertqueue, seq); if (error) goto out; - error = recover_locks_queue(r, &r->res_waitqueue); + error = recover_locks_queue(r, &r->res_waitqueue, seq); if (error) goto out; @@ -656,7 +658,7 @@ static int recover_locks(struct dlm_rsb *r) return error; } -int dlm_recover_locks(struct dlm_ls *ls) +int dlm_recover_locks(struct dlm_ls *ls, uint64_t seq) { struct dlm_rsb *r; int error, count = 0; @@ -677,7 +679,7 @@ int dlm_recover_locks(struct dlm_ls *ls) goto out; } - error = recover_locks(r); + error = recover_locks(r, seq); if (error) { up_read(&ls->ls_root_sem); goto out; diff --git a/fs/dlm/recover.h b/fs/dlm/recover.h index 235e0d25cd48..dbc51013ecad 100644 --- a/fs/dlm/recover.h +++ b/fs/dlm/recover.h @@ -15,13 +15,13 @@ int dlm_wait_function(struct dlm_ls *ls, int (*testfn) (struct dlm_ls *ls)); uint32_t dlm_recover_status(struct dlm_ls *ls); void dlm_set_recover_status(struct dlm_ls *ls, uint32_t status); -int dlm_recover_members_wait(struct dlm_ls *ls); -int dlm_recover_directory_wait(struct dlm_ls *ls); -int dlm_recover_locks_wait(struct dlm_ls *ls); -int dlm_recover_done_wait(struct dlm_ls *ls); -int dlm_recover_masters(struct dlm_ls *ls); -int dlm_recover_master_reply(struct dlm_ls *ls, struct dlm_rcom *rc); -int dlm_recover_locks(struct dlm_ls *ls); +int dlm_recover_members_wait(struct dlm_ls *ls, uint64_t seq); +int dlm_recover_directory_wait(struct dlm_ls *ls, uint64_t seq); +int dlm_recover_locks_wait(struct dlm_ls *ls, uint64_t seq); +int dlm_recover_done_wait(struct dlm_ls *ls, uint64_t seq); +int dlm_recover_masters(struct dlm_ls *ls, uint64_t seq); +int dlm_recover_master_reply(struct dlm_ls *ls, const struct dlm_rcom *rc); +int dlm_recover_locks(struct dlm_ls *ls, uint64_t seq); void dlm_recovered_lock(struct dlm_rsb *r); int dlm_create_root_list(struct dlm_ls *ls); void dlm_release_root_list(struct dlm_ls *ls); diff --git a/fs/dlm/recoverd.c b/fs/dlm/recoverd.c index 19da816cfb09..4d17491dea2f 100644 --- a/fs/dlm/recoverd.c +++ b/fs/dlm/recoverd.c @@ -90,7 +90,7 @@ static int ls_recover(struct dlm_ls *ls, struct dlm_recover *rv) dlm_set_recover_status(ls, DLM_RS_NODES); - error = dlm_recover_members_wait(ls); + error = dlm_recover_members_wait(ls, rv->seq); if (error) { log_rinfo(ls, "dlm_recover_members_wait error %d", error); goto fail; @@ -103,7 +103,7 @@ static int ls_recover(struct dlm_ls *ls, struct dlm_recover *rv) * nodes their master rsb names that hash to us. */ - error = dlm_recover_directory(ls); + error = dlm_recover_directory(ls, rv->seq); if (error) { log_rinfo(ls, "dlm_recover_directory error %d", error); goto fail; @@ -111,7 +111,7 @@ static int ls_recover(struct dlm_ls *ls, struct dlm_recover *rv) dlm_set_recover_status(ls, DLM_RS_DIR); - error = dlm_recover_directory_wait(ls); + error = dlm_recover_directory_wait(ls, rv->seq); if (error) { log_rinfo(ls, "dlm_recover_directory_wait error %d", error); goto fail; @@ -145,7 +145,7 @@ static int ls_recover(struct dlm_ls *ls, struct dlm_recover *rv) * departed nodes. */ - error = dlm_recover_masters(ls); + error = dlm_recover_masters(ls, rv->seq); if (error) { log_rinfo(ls, "dlm_recover_masters error %d", error); goto fail; @@ -155,7 +155,7 @@ static int ls_recover(struct dlm_ls *ls, struct dlm_recover *rv) * Send our locks on remastered rsb's to the new masters. */ - error = dlm_recover_locks(ls); + error = dlm_recover_locks(ls, rv->seq); if (error) { log_rinfo(ls, "dlm_recover_locks error %d", error); goto fail; @@ -163,7 +163,7 @@ static int ls_recover(struct dlm_ls *ls, struct dlm_recover *rv) dlm_set_recover_status(ls, DLM_RS_LOCKS); - error = dlm_recover_locks_wait(ls); + error = dlm_recover_locks_wait(ls, rv->seq); if (error) { log_rinfo(ls, "dlm_recover_locks_wait error %d", error); goto fail; @@ -187,7 +187,7 @@ static int ls_recover(struct dlm_ls *ls, struct dlm_recover *rv) */ dlm_set_recover_status(ls, DLM_RS_LOCKS); - error = dlm_recover_locks_wait(ls); + error = dlm_recover_locks_wait(ls, rv->seq); if (error) { log_rinfo(ls, "dlm_recover_locks_wait error %d", error); goto fail; @@ -206,7 +206,7 @@ static int ls_recover(struct dlm_ls *ls, struct dlm_recover *rv) dlm_set_recover_status(ls, DLM_RS_DONE); - error = dlm_recover_done_wait(ls); + error = dlm_recover_done_wait(ls, rv->seq); if (error) { log_rinfo(ls, "dlm_recover_done_wait error %d", error); goto fail; diff --git a/fs/dlm/requestqueue.c b/fs/dlm/requestqueue.c index 8be2893ad15b..892d6ca21e74 100644 --- a/fs/dlm/requestqueue.c +++ b/fs/dlm/requestqueue.c @@ -30,7 +30,8 @@ struct rq_entry { * lockspace is enabled on some while still suspended on others. */ -void dlm_add_requestqueue(struct dlm_ls *ls, int nodeid, struct dlm_message *ms) +void dlm_add_requestqueue(struct dlm_ls *ls, int nodeid, + const struct dlm_message *ms) { struct rq_entry *e; int length = le16_to_cpu(ms->m_header.h_length) - diff --git a/fs/dlm/requestqueue.h b/fs/dlm/requestqueue.h index 4e403469a845..42bfe23ceabe 100644 --- a/fs/dlm/requestqueue.h +++ b/fs/dlm/requestqueue.h @@ -11,7 +11,8 @@ #ifndef __REQUESTQUEUE_DOT_H__ #define __REQUESTQUEUE_DOT_H__ -void dlm_add_requestqueue(struct dlm_ls *ls, int nodeid, struct dlm_message *ms); +void dlm_add_requestqueue(struct dlm_ls *ls, int nodeid, + const struct dlm_message *ms); int dlm_process_requestqueue(struct dlm_ls *ls); void dlm_wait_requestqueue(struct dlm_ls *ls); void dlm_purge_requestqueue(struct dlm_ls *ls); diff --git a/fs/ecryptfs/crypto.c b/fs/ecryptfs/crypto.c index c16f0d660cb7..03bd55069d86 100644 --- a/fs/ecryptfs/crypto.c +++ b/fs/ecryptfs/crypto.c @@ -441,10 +441,10 @@ int ecryptfs_encrypt_page(struct page *page) } lower_offset = lower_offset_for_page(crypt_stat, page); - enc_extent_virt = kmap(enc_extent_page); + enc_extent_virt = kmap_local_page(enc_extent_page); rc = ecryptfs_write_lower(ecryptfs_inode, enc_extent_virt, lower_offset, PAGE_SIZE); - kunmap(enc_extent_page); + kunmap_local(enc_extent_virt); if (rc < 0) { ecryptfs_printk(KERN_ERR, "Error attempting to write lower page; rc = [%d]\n", @@ -490,10 +490,10 @@ int ecryptfs_decrypt_page(struct page *page) BUG_ON(!(crypt_stat->flags & ECRYPTFS_ENCRYPTED)); lower_offset = lower_offset_for_page(crypt_stat, page); - page_virt = kmap(page); + page_virt = kmap_local_page(page); rc = ecryptfs_read_lower(page_virt, lower_offset, PAGE_SIZE, ecryptfs_inode); - kunmap(page); + kunmap_local(page_virt); if (rc < 0) { ecryptfs_printk(KERN_ERR, "Error attempting to read lower page; rc = [%d]\n", diff --git a/fs/ecryptfs/inode.c b/fs/ecryptfs/inode.c index 83274915ba6d..992d9c7e64ae 100644 --- a/fs/ecryptfs/inode.c +++ b/fs/ecryptfs/inode.c @@ -148,7 +148,7 @@ static int ecryptfs_do_unlink(struct inode *dir, struct dentry *dentry, } fsstack_copy_attr_times(dir, lower_dir); set_nlink(inode, ecryptfs_inode_to_lower(inode)->i_nlink); - inode->i_ctime = dir->i_ctime; + inode_set_ctime_to_ts(inode, inode_get_ctime(dir)); out_unlock: dput(lower_dentry); inode_unlock(lower_dir); @@ -982,7 +982,7 @@ static int ecryptfs_getattr_link(struct mnt_idmap *idmap, mount_crypt_stat = &ecryptfs_superblock_to_private( dentry->d_sb)->mount_crypt_stat; - generic_fillattr(&nop_mnt_idmap, d_inode(dentry), stat); + generic_fillattr(&nop_mnt_idmap, request_mask, d_inode(dentry), stat); if (mount_crypt_stat->flags & ECRYPTFS_GLOBAL_ENCRYPT_FILENAMES) { char *target; size_t targetsiz; @@ -1011,7 +1011,8 @@ static int ecryptfs_getattr(struct mnt_idmap *idmap, if (!rc) { fsstack_copy_attr_all(d_inode(dentry), ecryptfs_inode_to_lower(d_inode(dentry))); - generic_fillattr(&nop_mnt_idmap, d_inode(dentry), stat); + generic_fillattr(&nop_mnt_idmap, request_mask, + d_inode(dentry), stat); stat->blocks = lower_stat.blocks; } return rc; diff --git a/fs/ecryptfs/mmap.c b/fs/ecryptfs/mmap.c index 373c3e5747e6..e2483acc4366 100644 --- a/fs/ecryptfs/mmap.c +++ b/fs/ecryptfs/mmap.c @@ -125,7 +125,7 @@ ecryptfs_copy_up_encrypted_with_header(struct page *page, /* This is a header extent */ char *page_virt; - page_virt = kmap_atomic(page); + page_virt = kmap_local_page(page); memset(page_virt, 0, PAGE_SIZE); /* TODO: Support more than one header extent */ if (view_extent_num == 0) { @@ -138,7 +138,7 @@ ecryptfs_copy_up_encrypted_with_header(struct page *page, crypt_stat, &written); } - kunmap_atomic(page_virt); + kunmap_local(page_virt); flush_dcache_page(page); if (rc) { printk(KERN_ERR "%s: Error reading xattr " @@ -255,7 +255,6 @@ out: * @mapping: The eCryptfs object * @pos: The file offset at which to start writing * @len: Length of the write - * @flags: Various flags * @pagep: Pointer to return the page * @fsdata: Pointer to return fs data (unused) * diff --git a/fs/ecryptfs/read_write.c b/fs/ecryptfs/read_write.c index 60bdcaddcbe5..3458f153a588 100644 --- a/fs/ecryptfs/read_write.c +++ b/fs/ecryptfs/read_write.c @@ -64,11 +64,11 @@ int ecryptfs_write_lower_page_segment(struct inode *ecryptfs_inode, offset = ((((loff_t)page_for_lower->index) << PAGE_SHIFT) + offset_in_page); - virt = kmap(page_for_lower); + virt = kmap_local_page(page_for_lower); rc = ecryptfs_write_lower(ecryptfs_inode, virt, offset, size); if (rc > 0) rc = 0; - kunmap(page_for_lower); + kunmap_local(virt); return rc; } @@ -140,7 +140,7 @@ int ecryptfs_write(struct inode *ecryptfs_inode, char *data, loff_t offset, ecryptfs_page_idx, rc); goto out; } - ecryptfs_page_virt = kmap_atomic(ecryptfs_page); + ecryptfs_page_virt = kmap_local_page(ecryptfs_page); /* * pos: where we're now writing, offset: where the request was @@ -163,7 +163,7 @@ int ecryptfs_write(struct inode *ecryptfs_inode, char *data, loff_t offset, (data + data_offset), num_bytes); data_offset += num_bytes; } - kunmap_atomic(ecryptfs_page_virt); + kunmap_local(ecryptfs_page_virt); flush_dcache_page(ecryptfs_page); SetPageUptodate(ecryptfs_page); unlock_page(ecryptfs_page); @@ -253,11 +253,11 @@ int ecryptfs_read_lower_page_segment(struct page *page_for_ecryptfs, int rc; offset = ((((loff_t)page_index) << PAGE_SHIFT) + offset_in_page); - virt = kmap(page_for_ecryptfs); + virt = kmap_local_page(page_for_ecryptfs); rc = ecryptfs_read_lower(virt, offset, size, ecryptfs_inode); if (rc > 0) rc = 0; - kunmap(page_for_ecryptfs); + kunmap_local(virt); flush_dcache_page(page_for_ecryptfs); return rc; } diff --git a/fs/efivarfs/file.c b/fs/efivarfs/file.c index d57ee15874f9..59b52718a3a2 100644 --- a/fs/efivarfs/file.c +++ b/fs/efivarfs/file.c @@ -51,7 +51,7 @@ static ssize_t efivarfs_file_write(struct file *file, } else { inode_lock(inode); i_size_write(inode, datasize + sizeof(attributes)); - inode->i_mtime = current_time(inode); + inode->i_mtime = inode_set_ctime_current(inode); inode_unlock(inode); } diff --git a/fs/efivarfs/inode.c b/fs/efivarfs/inode.c index b973a2c03dde..db9231f0e77b 100644 --- a/fs/efivarfs/inode.c +++ b/fs/efivarfs/inode.c @@ -25,7 +25,7 @@ struct inode *efivarfs_get_inode(struct super_block *sb, if (inode) { inode->i_ino = get_next_ino(); inode->i_mode = mode; - inode->i_atime = inode->i_mtime = inode->i_ctime = current_time(inode); + inode->i_atime = inode->i_mtime = inode_set_ctime_current(inode); inode->i_flags = is_removable ? 0 : S_IMMUTABLE; switch (mode & S_IFMT) { case S_IFREG: diff --git a/fs/efs/Kconfig b/fs/efs/Kconfig index 2df1bac8b375..0833e533df9d 100644 --- a/fs/efs/Kconfig +++ b/fs/efs/Kconfig @@ -2,6 +2,7 @@ config EFS_FS tristate "EFS file system support (read only)" depends on BLOCK + select BUFFER_HEAD help EFS is an older file system used for non-ISO9660 CD-ROMs and hard disk partitions by SGI's IRIX operating system (IRIX 6.0 and newer diff --git a/fs/efs/efs.h b/fs/efs/efs.h index 13a4d9622633..918d2b9abb76 100644 --- a/fs/efs/efs.h +++ b/fs/efs/efs.h @@ -1,6 +1,6 @@ /* SPDX-License-Identifier: GPL-2.0 */ /* - * Copyright (c) 1999 Al Smith + * Copyright (c) 1999 Al Smith, <Al.Smith@aeschi.ch.eu.org> * * Portions derived from work (c) 1995,1996 Christian Vogelgsang. * Portions derived from IRIX header files (c) 1988 Silicon Graphics @@ -19,9 +19,6 @@ #define EFS_VERSION "1.0a" -static const char cprt[] = "EFS: "EFS_VERSION" - (c) 1999 Al Smith <Al.Smith@aeschi.ch.eu.org>"; - - /* 1 block is 512 bytes */ #define EFS_BLOCKSIZE_BITS 9 #define EFS_BLOCKSIZE (1 << EFS_BLOCKSIZE_BITS) diff --git a/fs/efs/inode.c b/fs/efs/inode.c index 3ba94bb005a6..3789d22ba501 100644 --- a/fs/efs/inode.c +++ b/fs/efs/inode.c @@ -105,8 +105,8 @@ struct inode *efs_iget(struct super_block *super, unsigned long ino) inode->i_size = be32_to_cpu(efs_inode->di_size); inode->i_atime.tv_sec = be32_to_cpu(efs_inode->di_atime); inode->i_mtime.tv_sec = be32_to_cpu(efs_inode->di_mtime); - inode->i_ctime.tv_sec = be32_to_cpu(efs_inode->di_ctime); - inode->i_atime.tv_nsec = inode->i_mtime.tv_nsec = inode->i_ctime.tv_nsec = 0; + inode_set_ctime(inode, be32_to_cpu(efs_inode->di_ctime), 0); + inode->i_atime.tv_nsec = inode->i_mtime.tv_nsec = 0; /* this is the number of blocks in the file */ if (inode->i_size == 0) { diff --git a/fs/erofs/Kconfig b/fs/erofs/Kconfig index f259d92c9720..f6dc961e6c2b 100644 --- a/fs/erofs/Kconfig +++ b/fs/erofs/Kconfig @@ -38,6 +38,7 @@ config EROFS_FS_DEBUG config EROFS_FS_XATTR bool "EROFS extended attributes" depends on EROFS_FS + select XXHASH default y help Extended attributes are name:value pairs associated with inodes by @@ -99,6 +100,21 @@ config EROFS_FS_ZIP_LZMA If unsure, say N. +config EROFS_FS_ZIP_DEFLATE + bool "EROFS DEFLATE compressed data support" + depends on EROFS_FS_ZIP + select ZLIB_INFLATE + help + Saying Y here includes support for reading EROFS file systems + containing DEFLATE compressed data. It gives better compression + ratios than the default LZ4 format, while it costs more CPU + overhead. + + DEFLATE support is an experimental feature for now and so most + file systems will be readable without selecting this option. + + If unsure, say N. + config EROFS_FS_ONDEMAND bool "EROFS fscache-based on-demand read support" depends on CACHEFILES_ONDEMAND && (EROFS_FS=m && FSCACHE || EROFS_FS=y && FSCACHE=y) diff --git a/fs/erofs/Makefile b/fs/erofs/Makefile index a3a98fc3e481..994d0b9deddf 100644 --- a/fs/erofs/Makefile +++ b/fs/erofs/Makefile @@ -5,4 +5,5 @@ erofs-objs := super.o inode.o data.o namei.o dir.o utils.o sysfs.o erofs-$(CONFIG_EROFS_FS_XATTR) += xattr.o erofs-$(CONFIG_EROFS_FS_ZIP) += decompressor.o zmap.o zdata.o pcpubuf.o erofs-$(CONFIG_EROFS_FS_ZIP_LZMA) += decompressor_lzma.o +erofs-$(CONFIG_EROFS_FS_ZIP_DEFLATE) += decompressor_deflate.o erofs-$(CONFIG_EROFS_FS_ONDEMAND) += fscache.o diff --git a/fs/erofs/compress.h b/fs/erofs/compress.h index b1b846504027..349c3316ae6b 100644 --- a/fs/erofs/compress.h +++ b/fs/erofs/compress.h @@ -94,4 +94,6 @@ extern const struct z_erofs_decompressor erofs_decompressors[]; /* prototypes for specific algorithms */ int z_erofs_lzma_decompress(struct z_erofs_decompress_req *rq, struct page **pagepool); +int z_erofs_deflate_decompress(struct z_erofs_decompress_req *rq, + struct page **pagepool); #endif diff --git a/fs/erofs/decompressor.c b/fs/erofs/decompressor.c index cfad1eac7fd9..332ec5f74002 100644 --- a/fs/erofs/decompressor.c +++ b/fs/erofs/decompressor.c @@ -379,4 +379,10 @@ const struct z_erofs_decompressor erofs_decompressors[] = { .name = "lzma" }, #endif +#ifdef CONFIG_EROFS_FS_ZIP_DEFLATE + [Z_EROFS_COMPRESSION_DEFLATE] = { + .decompress = z_erofs_deflate_decompress, + .name = "deflate" + }, +#endif }; diff --git a/fs/erofs/decompressor_deflate.c b/fs/erofs/decompressor_deflate.c new file mode 100644 index 000000000000..19e5bdeb30b6 --- /dev/null +++ b/fs/erofs/decompressor_deflate.c @@ -0,0 +1,247 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +#include <linux/module.h> +#include <linux/zlib.h> +#include "compress.h" + +struct z_erofs_deflate { + struct z_erofs_deflate *next; + struct z_stream_s z; + u8 bounce[PAGE_SIZE]; +}; + +static DEFINE_SPINLOCK(z_erofs_deflate_lock); +static unsigned int z_erofs_deflate_nstrms, z_erofs_deflate_avail_strms; +static struct z_erofs_deflate *z_erofs_deflate_head; +static DECLARE_WAIT_QUEUE_HEAD(z_erofs_deflate_wq); + +module_param_named(deflate_streams, z_erofs_deflate_nstrms, uint, 0444); + +void z_erofs_deflate_exit(void) +{ + /* there should be no running fs instance */ + while (z_erofs_deflate_avail_strms) { + struct z_erofs_deflate *strm; + + spin_lock(&z_erofs_deflate_lock); + strm = z_erofs_deflate_head; + if (!strm) { + spin_unlock(&z_erofs_deflate_lock); + continue; + } + z_erofs_deflate_head = NULL; + spin_unlock(&z_erofs_deflate_lock); + + while (strm) { + struct z_erofs_deflate *n = strm->next; + + vfree(strm->z.workspace); + kfree(strm); + --z_erofs_deflate_avail_strms; + strm = n; + } + } +} + +int __init z_erofs_deflate_init(void) +{ + /* by default, use # of possible CPUs instead */ + if (!z_erofs_deflate_nstrms) + z_erofs_deflate_nstrms = num_possible_cpus(); + + for (; z_erofs_deflate_avail_strms < z_erofs_deflate_nstrms; + ++z_erofs_deflate_avail_strms) { + struct z_erofs_deflate *strm; + + strm = kzalloc(sizeof(*strm), GFP_KERNEL); + if (!strm) + goto out_failed; + + /* XXX: in-kernel zlib cannot shrink windowbits currently */ + strm->z.workspace = vmalloc(zlib_inflate_workspacesize()); + if (!strm->z.workspace) { + kfree(strm); + goto out_failed; + } + + spin_lock(&z_erofs_deflate_lock); + strm->next = z_erofs_deflate_head; + z_erofs_deflate_head = strm; + spin_unlock(&z_erofs_deflate_lock); + } + return 0; + +out_failed: + pr_err("failed to allocate zlib workspace\n"); + z_erofs_deflate_exit(); + return -ENOMEM; +} + +int z_erofs_load_deflate_config(struct super_block *sb, + struct erofs_super_block *dsb, + struct z_erofs_deflate_cfgs *dfl, int size) +{ + if (!dfl || size < sizeof(struct z_erofs_deflate_cfgs)) { + erofs_err(sb, "invalid deflate cfgs, size=%u", size); + return -EINVAL; + } + + if (dfl->windowbits > MAX_WBITS) { + erofs_err(sb, "unsupported windowbits %u", dfl->windowbits); + return -EOPNOTSUPP; + } + + erofs_info(sb, "EXPERIMENTAL DEFLATE feature in use. Use at your own risk!"); + return 0; +} + +int z_erofs_deflate_decompress(struct z_erofs_decompress_req *rq, + struct page **pagepool) +{ + const unsigned int nrpages_out = + PAGE_ALIGN(rq->pageofs_out + rq->outputsize) >> PAGE_SHIFT; + const unsigned int nrpages_in = + PAGE_ALIGN(rq->inputsize) >> PAGE_SHIFT; + struct super_block *sb = rq->sb; + unsigned int insz, outsz, pofs; + struct z_erofs_deflate *strm; + u8 *kin, *kout = NULL; + bool bounced = false; + int no = -1, ni = 0, j = 0, zerr, err; + + /* 1. get the exact DEFLATE compressed size */ + kin = kmap_local_page(*rq->in); + err = z_erofs_fixup_insize(rq, kin + rq->pageofs_in, + min_t(unsigned int, rq->inputsize, + sb->s_blocksize - rq->pageofs_in)); + if (err) { + kunmap_local(kin); + return err; + } + + /* 2. get an available DEFLATE context */ +again: + spin_lock(&z_erofs_deflate_lock); + strm = z_erofs_deflate_head; + if (!strm) { + spin_unlock(&z_erofs_deflate_lock); + wait_event(z_erofs_deflate_wq, READ_ONCE(z_erofs_deflate_head)); + goto again; + } + z_erofs_deflate_head = strm->next; + spin_unlock(&z_erofs_deflate_lock); + + /* 3. multi-call decompress */ + insz = rq->inputsize; + outsz = rq->outputsize; + zerr = zlib_inflateInit2(&strm->z, -MAX_WBITS); + if (zerr != Z_OK) { + err = -EIO; + goto failed_zinit; + } + + pofs = rq->pageofs_out; + strm->z.avail_in = min_t(u32, insz, PAGE_SIZE - rq->pageofs_in); + insz -= strm->z.avail_in; + strm->z.next_in = kin + rq->pageofs_in; + strm->z.avail_out = 0; + + while (1) { + if (!strm->z.avail_out) { + if (++no >= nrpages_out || !outsz) { + erofs_err(sb, "insufficient space for decompressed data"); + err = -EFSCORRUPTED; + break; + } + + if (kout) + kunmap_local(kout); + strm->z.avail_out = min_t(u32, outsz, PAGE_SIZE - pofs); + outsz -= strm->z.avail_out; + if (!rq->out[no]) { + rq->out[no] = erofs_allocpage(pagepool, + GFP_KERNEL | __GFP_NOFAIL); + set_page_private(rq->out[no], + Z_EROFS_SHORTLIVED_PAGE); + } + kout = kmap_local_page(rq->out[no]); + strm->z.next_out = kout + pofs; + pofs = 0; + } + + if (!strm->z.avail_in && insz) { + if (++ni >= nrpages_in) { + erofs_err(sb, "invalid compressed data"); + err = -EFSCORRUPTED; + break; + } + + if (kout) { /* unlike kmap(), take care of the orders */ + j = strm->z.next_out - kout; + kunmap_local(kout); + } + kunmap_local(kin); + strm->z.avail_in = min_t(u32, insz, PAGE_SIZE); + insz -= strm->z.avail_in; + kin = kmap_local_page(rq->in[ni]); + strm->z.next_in = kin; + bounced = false; + if (kout) { + kout = kmap_local_page(rq->out[no]); + strm->z.next_out = kout + j; + } + } + + /* + * Handle overlapping: Use bounced buffer if the compressed + * data is under processing; Or use short-lived pages from the + * on-stack pagepool where pages share among the same request + * and not _all_ inplace I/O pages are needed to be doubled. + */ + if (!bounced && rq->out[no] == rq->in[ni]) { + memcpy(strm->bounce, strm->z.next_in, strm->z.avail_in); + strm->z.next_in = strm->bounce; + bounced = true; + } + + for (j = ni + 1; j < nrpages_in; ++j) { + struct page *tmppage; + + if (rq->out[no] != rq->in[j]) + continue; + + DBG_BUGON(erofs_page_is_managed(EROFS_SB(sb), + rq->in[j])); + tmppage = erofs_allocpage(pagepool, + GFP_KERNEL | __GFP_NOFAIL); + set_page_private(tmppage, Z_EROFS_SHORTLIVED_PAGE); + copy_highpage(tmppage, rq->in[j]); + rq->in[j] = tmppage; + } + + zerr = zlib_inflate(&strm->z, Z_SYNC_FLUSH); + if (zerr != Z_OK || !(outsz + strm->z.avail_out)) { + if (zerr == Z_OK && rq->partial_decoding) + break; + if (zerr == Z_STREAM_END && !outsz) + break; + erofs_err(sb, "failed to decompress %d in[%u] out[%u]", + zerr, rq->inputsize, rq->outputsize); + err = -EFSCORRUPTED; + break; + } + } + + if (zlib_inflateEnd(&strm->z) != Z_OK && !err) + err = -EIO; + if (kout) + kunmap_local(kout); +failed_zinit: + kunmap_local(kin); + /* 4. push back DEFLATE stream context to the global list */ + spin_lock(&z_erofs_deflate_lock); + strm->next = z_erofs_deflate_head; + z_erofs_deflate_head = strm; + spin_unlock(&z_erofs_deflate_lock); + wake_up(&z_erofs_deflate_wq); + return err; +} diff --git a/fs/erofs/erofs_fs.h b/fs/erofs/erofs_fs.h index 2c7b16e340fe..a03ec70ba6f2 100644 --- a/fs/erofs/erofs_fs.h +++ b/fs/erofs/erofs_fs.h @@ -13,6 +13,7 @@ #define EROFS_FEATURE_COMPAT_SB_CHKSUM 0x00000001 #define EROFS_FEATURE_COMPAT_MTIME 0x00000002 +#define EROFS_FEATURE_COMPAT_XATTR_FILTER 0x00000004 /* * Any bits that aren't in EROFS_ALL_FEATURE_INCOMPAT should @@ -81,7 +82,8 @@ struct erofs_super_block { __u8 xattr_prefix_count; /* # of long xattr name prefixes */ __le32 xattr_prefix_start; /* start of long xattr prefixes */ __le64 packed_nid; /* nid of the special packed inode */ - __u8 reserved2[24]; + __u8 xattr_filter_reserved; /* reserved for xattr name filter */ + __u8 reserved2[23]; }; /* @@ -200,7 +202,7 @@ struct erofs_inode_extended { * for read-only fs, no need to introduce h_refcount */ struct erofs_xattr_ibody_header { - __le32 h_reserved; + __le32 h_name_filter; /* bit value 1 indicates not-present */ __u8 h_shared_count; __u8 h_reserved2[7]; __le32 h_shared_xattrs[]; /* shared xattr id array */ @@ -221,6 +223,10 @@ struct erofs_xattr_ibody_header { #define EROFS_XATTR_LONG_PREFIX 0x80 #define EROFS_XATTR_LONG_PREFIX_MASK 0x7f +#define EROFS_XATTR_FILTER_BITS 32 +#define EROFS_XATTR_FILTER_DEFAULT UINT32_MAX +#define EROFS_XATTR_FILTER_SEED 0x25BBE08F + /* xattr entry (for both inline & shared xattrs) */ struct erofs_xattr_entry { __u8 e_name_len; /* length of name */ @@ -289,6 +295,7 @@ struct erofs_dirent { enum { Z_EROFS_COMPRESSION_LZ4 = 0, Z_EROFS_COMPRESSION_LZMA = 1, + Z_EROFS_COMPRESSION_DEFLATE = 2, Z_EROFS_COMPRESSION_MAX }; #define Z_EROFS_ALL_COMPR_ALGS ((1 << Z_EROFS_COMPRESSION_MAX) - 1) @@ -309,6 +316,12 @@ struct z_erofs_lzma_cfgs { #define Z_EROFS_LZMA_MAX_DICT_SIZE (8 * Z_EROFS_PCLUSTER_MAX_SIZE) +/* 6 bytes (+ length field = 8 bytes) */ +struct z_erofs_deflate_cfgs { + u8 windowbits; /* 8..15 for DEFLATE */ + u8 reserved[5]; +} __packed; + /* * bit 0 : COMPACTED_2B indexes (0 - off; 1 - on) * e.g. for 4k logical cluster size, 4B if compacted 2B is off; diff --git a/fs/erofs/inode.c b/fs/erofs/inode.c index e12592727a54..edc8ec7581b8 100644 --- a/fs/erofs/inode.c +++ b/fs/erofs/inode.c @@ -105,8 +105,8 @@ static void *erofs_read_inode(struct erofs_buf *buf, set_nlink(inode, le32_to_cpu(die->i_nlink)); /* extended inode has its own timestamp */ - inode->i_ctime.tv_sec = le64_to_cpu(die->i_mtime); - inode->i_ctime.tv_nsec = le32_to_cpu(die->i_mtime_nsec); + inode_set_ctime(inode, le64_to_cpu(die->i_mtime), + le32_to_cpu(die->i_mtime_nsec)); inode->i_size = le64_to_cpu(die->i_size); @@ -148,8 +148,7 @@ static void *erofs_read_inode(struct erofs_buf *buf, set_nlink(inode, le16_to_cpu(dic->i_nlink)); /* use build time for compact inodes */ - inode->i_ctime.tv_sec = sbi->build_time; - inode->i_ctime.tv_nsec = sbi->build_time_nsec; + inode_set_ctime(inode, sbi->build_time, sbi->build_time_nsec); inode->i_size = le32_to_cpu(dic->i_size); if (erofs_inode_is_data_compressed(vi->datalayout)) @@ -176,10 +175,7 @@ static void *erofs_read_inode(struct erofs_buf *buf, vi->chunkbits = sb->s_blocksize_bits + (vi->chunkformat & EROFS_CHUNK_FORMAT_BLKBITS_MASK); } - inode->i_mtime.tv_sec = inode->i_ctime.tv_sec; - inode->i_atime.tv_sec = inode->i_ctime.tv_sec; - inode->i_mtime.tv_nsec = inode->i_ctime.tv_nsec; - inode->i_atime.tv_nsec = inode->i_ctime.tv_nsec; + inode->i_mtime = inode->i_atime = inode_get_ctime(inode); inode->i_flags &= ~S_DAX; if (test_opt(&sbi->opt, DAX_ALWAYS) && S_ISREG(inode->i_mode) && @@ -373,7 +369,7 @@ int erofs_getattr(struct mnt_idmap *idmap, const struct path *path, stat->attributes_mask |= (STATX_ATTR_COMPRESSED | STATX_ATTR_IMMUTABLE); - generic_fillattr(idmap, inode, stat); + generic_fillattr(idmap, request_mask, inode, stat); return 0; } diff --git a/fs/erofs/internal.h b/fs/erofs/internal.h index 36e32fa542f0..4ff88d0dd980 100644 --- a/fs/erofs/internal.h +++ b/fs/erofs/internal.h @@ -151,6 +151,7 @@ struct erofs_sb_info { u32 xattr_prefix_start; u8 xattr_prefix_count; struct erofs_xattr_prefix_item *xattr_prefixes; + unsigned int xattr_filter_reserved; #endif u16 device_id_mask; /* valid bits of device id to be used */ @@ -251,6 +252,7 @@ EROFS_FEATURE_FUNCS(fragments, incompat, INCOMPAT_FRAGMENTS) EROFS_FEATURE_FUNCS(dedupe, incompat, INCOMPAT_DEDUPE) EROFS_FEATURE_FUNCS(xattr_prefixes, incompat, INCOMPAT_XATTR_PREFIXES) EROFS_FEATURE_FUNCS(sb_chksum, compat, COMPAT_SB_CHKSUM) +EROFS_FEATURE_FUNCS(xattr_filter, compat, COMPAT_XATTR_FILTER) /* atomic flag definitions */ #define EROFS_I_EA_INITED_BIT 0 @@ -270,6 +272,7 @@ struct erofs_inode { unsigned char inode_isize; unsigned int xattr_isize; + unsigned int xattr_name_filter; unsigned int xattr_shared_count; unsigned int *xattr_shared_xattrs; @@ -519,6 +522,26 @@ static inline int z_erofs_load_lzma_config(struct super_block *sb, } #endif /* !CONFIG_EROFS_FS_ZIP_LZMA */ +#ifdef CONFIG_EROFS_FS_ZIP_DEFLATE +int __init z_erofs_deflate_init(void); +void z_erofs_deflate_exit(void); +int z_erofs_load_deflate_config(struct super_block *sb, + struct erofs_super_block *dsb, + struct z_erofs_deflate_cfgs *dfl, int size); +#else +static inline int z_erofs_deflate_init(void) { return 0; } +static inline int z_erofs_deflate_exit(void) { return 0; } +static inline int z_erofs_load_deflate_config(struct super_block *sb, + struct erofs_super_block *dsb, + struct z_erofs_deflate_cfgs *dfl, int size) { + if (dfl) { + erofs_err(sb, "deflate algorithm isn't enabled"); + return -EINVAL; + } + return 0; +} +#endif /* !CONFIG_EROFS_FS_ZIP_DEFLATE */ + #ifdef CONFIG_EROFS_FS_ONDEMAND int erofs_fscache_register_fs(struct super_block *sb); void erofs_fscache_unregister_fs(struct super_block *sb); diff --git a/fs/erofs/super.c b/fs/erofs/super.c index 9d6a3c6158bd..44a24d573f1f 100644 --- a/fs/erofs/super.c +++ b/fs/erofs/super.c @@ -19,10 +19,8 @@ #include <trace/events/erofs.h> static struct kmem_cache *erofs_inode_cachep __read_mostly; -struct file_system_type erofs_fs_type; -void _erofs_err(struct super_block *sb, const char *function, - const char *fmt, ...) +void _erofs_err(struct super_block *sb, const char *func, const char *fmt, ...) { struct va_format vaf; va_list args; @@ -32,12 +30,11 @@ void _erofs_err(struct super_block *sb, const char *function, vaf.fmt = fmt; vaf.va = &args; - pr_err("(device %s): %s: %pV", sb->s_id, function, &vaf); + pr_err("(device %s): %s: %pV", sb->s_id, func, &vaf); va_end(args); } -void _erofs_info(struct super_block *sb, const char *function, - const char *fmt, ...) +void _erofs_info(struct super_block *sb, const char *func, const char *fmt, ...) { struct va_format vaf; va_list args; @@ -102,11 +99,9 @@ static void erofs_free_inode(struct inode *inode) { struct erofs_inode *vi = EROFS_I(inode); - /* be careful of RCU symlink path */ if (inode->i_op == &erofs_fast_symlink_iops) kfree(inode->i_link); kfree(vi->xattr_shared_xattrs); - kmem_cache_free(erofs_inode_cachep, vi); } @@ -119,8 +114,7 @@ static bool check_layout_compatibility(struct super_block *sb, /* check if current kernel meets all mandatory requirements */ if (feature & (~EROFS_ALL_FEATURE_INCOMPAT)) { - erofs_err(sb, - "unidentified incompatible feature %x, please upgrade kernel version", + erofs_err(sb, "unidentified incompatible feature %x, please upgrade kernel", feature & ~EROFS_ALL_FEATURE_INCOMPAT); return false; } @@ -201,6 +195,9 @@ static int erofs_load_compr_cfgs(struct super_block *sb, case Z_EROFS_COMPRESSION_LZMA: ret = z_erofs_load_lzma_config(sb, dsb, data, size); break; + case Z_EROFS_COMPRESSION_DEFLATE: + ret = z_erofs_load_deflate_config(sb, dsb, data, size); + break; default: DBG_BUGON(1); ret = -EFAULT; @@ -388,6 +385,7 @@ static int erofs_read_superblock(struct super_block *sb) sbi->xattr_blkaddr = le32_to_cpu(dsb->xattr_blkaddr); sbi->xattr_prefix_start = le32_to_cpu(dsb->xattr_prefix_start); sbi->xattr_prefix_count = dsb->xattr_prefix_count; + sbi->xattr_filter_reserved = dsb->xattr_filter_reserved; #endif sbi->islotbits = ilog2(sizeof(struct erofs_inode_compact)); sbi->root_nid = le16_to_cpu(dsb->root_nid); @@ -420,16 +418,11 @@ static int erofs_read_superblock(struct super_block *sb) if (erofs_is_fscache_mode(sb)) erofs_info(sb, "EXPERIMENTAL fscache-based on-demand read feature in use. Use at your own risk!"); - if (erofs_sb_has_fragments(sbi)) - erofs_info(sb, "EXPERIMENTAL compressed fragments feature in use. Use at your own risk!"); - if (erofs_sb_has_dedupe(sbi)) - erofs_info(sb, "EXPERIMENTAL global deduplication feature in use. Use at your own risk!"); out: erofs_put_metabuf(&buf); return ret; } -/* set up default EROFS parameters */ static void erofs_default_options(struct erofs_fs_context *ctx) { #ifdef CONFIG_EROFS_FS_ZIP @@ -731,7 +724,6 @@ static int erofs_fc_fill_super(struct super_block *sb, struct fs_context *fc) xa_init(&sbi->managed_pslots); #endif - /* get the root inode */ inode = erofs_iget(sb, ROOT_NID(sbi)); if (IS_ERR(inode)) return PTR_ERR(inode); @@ -748,7 +740,6 @@ static int erofs_fc_fill_super(struct super_block *sb, struct fs_context *fc) return -ENOMEM; erofs_shrinker_register(sb); - /* sb->s_umount is already locked, SB_ACTIVE and SB_BORN are not set */ if (erofs_sb_has_fragments(sbi) && sbi->packed_nid) { sbi->packed_inode = erofs_iget(sb, sbi->packed_nid); if (IS_ERR(sbi->packed_inode)) { @@ -881,16 +872,10 @@ static int erofs_init_fs_context(struct fs_context *fc) return 0; } -/* - * could be triggered after deactivate_locked_super() - * is called, thus including umount and failed to initialize. - */ static void erofs_kill_sb(struct super_block *sb) { struct erofs_sb_info *sbi; - WARN_ON(sb->s_magic != EROFS_SUPER_MAGIC); - /* pseudo mount for anon inodes */ if (sb->s_flags & SB_KERNMOUNT) { kill_anon_super(sb); @@ -915,7 +900,6 @@ static void erofs_kill_sb(struct super_block *sb) sb->s_fs_info = NULL; } -/* called when ->s_root is non-NULL */ static void erofs_put_super(struct super_block *sb) { struct erofs_sb_info *const sbi = EROFS_SB(sb); @@ -952,9 +936,9 @@ static int __init erofs_module_init(void) erofs_check_ondisk_layout_definitions(); erofs_inode_cachep = kmem_cache_create("erofs_inode", - sizeof(struct erofs_inode), 0, - SLAB_RECLAIM_ACCOUNT, - erofs_inode_init_once); + sizeof(struct erofs_inode), 0, + SLAB_RECLAIM_ACCOUNT | SLAB_MEM_SPREAD | SLAB_ACCOUNT, + erofs_inode_init_once); if (!erofs_inode_cachep) return -ENOMEM; @@ -966,6 +950,10 @@ static int __init erofs_module_init(void) if (err) goto lzma_err; + err = z_erofs_deflate_init(); + if (err) + goto deflate_err; + erofs_pcpubuf_init(); err = z_erofs_init_zip_subsystem(); if (err) @@ -986,6 +974,8 @@ fs_err: sysfs_err: z_erofs_exit_zip_subsystem(); zip_err: + z_erofs_deflate_exit(); +deflate_err: z_erofs_lzma_exit(); lzma_err: erofs_exit_shrinker(); @@ -1003,13 +993,13 @@ static void __exit erofs_module_exit(void) erofs_exit_sysfs(); z_erofs_exit_zip_subsystem(); + z_erofs_deflate_exit(); z_erofs_lzma_exit(); erofs_exit_shrinker(); kmem_cache_destroy(erofs_inode_cachep); erofs_pcpubuf_exit(); } -/* get filesystem statistics */ static int erofs_statfs(struct dentry *dentry, struct kstatfs *buf) { struct super_block *sb = dentry->d_sb; diff --git a/fs/erofs/xattr.c b/fs/erofs/xattr.c index 40178b6e0688..09d341675e89 100644 --- a/fs/erofs/xattr.c +++ b/fs/erofs/xattr.c @@ -5,6 +5,7 @@ * Copyright (C) 2021-2022, Alibaba Cloud */ #include <linux/security.h> +#include <linux/xxhash.h> #include "xattr.h" struct erofs_xattr_iter { @@ -87,6 +88,7 @@ static int erofs_init_inode_xattrs(struct inode *inode) } ih = it.kaddr + erofs_blkoff(sb, it.pos); + vi->xattr_name_filter = le32_to_cpu(ih->h_name_filter); vi->xattr_shared_count = ih->h_shared_count; vi->xattr_shared_xattrs = kmalloc_array(vi->xattr_shared_count, sizeof(uint), GFP_KERNEL); @@ -392,7 +394,10 @@ int erofs_getxattr(struct inode *inode, int index, const char *name, void *buffer, size_t buffer_size) { int ret; + unsigned int hashbit; struct erofs_xattr_iter it; + struct erofs_inode *vi = EROFS_I(inode); + struct erofs_sb_info *sbi = EROFS_SB(inode->i_sb); if (!name) return -EINVAL; @@ -401,6 +406,15 @@ int erofs_getxattr(struct inode *inode, int index, const char *name, if (ret) return ret; + /* reserved flag is non-zero if there's any change of on-disk format */ + if (erofs_sb_has_xattr_filter(sbi) && !sbi->xattr_filter_reserved) { + hashbit = xxh32(name, strlen(name), + EROFS_XATTR_FILTER_SEED + index); + hashbit &= EROFS_XATTR_FILTER_BITS - 1; + if (vi->xattr_name_filter & (1U << hashbit)) + return -ENOATTR; + } + it.index = index; it.name = (struct qstr)QSTR_INIT(name, strlen(name)); if (it.name.len > EROFS_NAME_LEN) diff --git a/fs/erofs/zdata.c b/fs/erofs/zdata.c index b69d89a11dd0..036f610e044b 100644 --- a/fs/erofs/zdata.c +++ b/fs/erofs/zdata.c @@ -143,22 +143,17 @@ static inline void z_erofs_onlinepage_split(struct page *page) atomic_inc((atomic_t *)&page->private); } -static inline void z_erofs_page_mark_eio(struct page *page) +static void z_erofs_onlinepage_endio(struct page *page, int err) { - int orig; + int orig, v; + + DBG_BUGON(!PagePrivate(page)); do { orig = atomic_read((atomic_t *)&page->private); - } while (atomic_cmpxchg((atomic_t *)&page->private, orig, - orig | Z_EROFS_PAGE_EIO) != orig); -} - -static inline void z_erofs_onlinepage_endio(struct page *page) -{ - unsigned int v; + v = (orig - 1) | (err ? Z_EROFS_PAGE_EIO : 0); + } while (atomic_cmpxchg((atomic_t *)&page->private, orig, v) != orig); - DBG_BUGON(!PagePrivate(page)); - v = atomic_dec_return((atomic_t *)&page->private); if (!(v & ~Z_EROFS_PAGE_EIO)) { set_page_private(page, 0); ClearPagePrivate(page); @@ -507,19 +502,17 @@ enum z_erofs_pclustermode { */ Z_EROFS_PCLUSTER_FOLLOWED_NOINPLACE, /* - * The current collection has been linked with the owned chain, and - * could also be linked with the remaining collections, which means - * if the processing page is the tail page of the collection, thus - * the current collection can safely use the whole page (since - * the previous collection is under control) for in-place I/O, as - * illustrated below: - * ________________________________________________________________ - * | tail (partial) page | head (partial) page | - * | (of the current cl) | (of the previous collection) | - * | | | - * |__PCLUSTER_FOLLOWED___|___________PCLUSTER_FOLLOWED____________| + * The pcluster was just linked to a decompression chain by us. It can + * also be linked with the remaining pclusters, which means if the + * processing page is the tail page of a pcluster, this pcluster can + * safely use the whole page (since the previous pcluster is within the + * same chain) for in-place I/O, as illustrated below: + * ___________________________________________________ + * | tail (partial) page | head (partial) page | + * | (of the current pcl) | (of the previous pcl) | + * |___PCLUSTER_FOLLOWED___|_____PCLUSTER_FOLLOWED_____| * - * [ (*) the above page can be used as inplace I/O. ] + * [ (*) the page above can be used as inplace I/O. ] */ Z_EROFS_PCLUSTER_FOLLOWED, }; @@ -535,8 +528,6 @@ struct z_erofs_decompress_frontend { z_erofs_next_pcluster_t owned_head; enum z_erofs_pclustermode mode; - /* used for applying cache strategy on the fly */ - bool backmost; erofs_off_t headoffset; /* a pointer used to pick up inplace I/O pages */ @@ -545,7 +536,7 @@ struct z_erofs_decompress_frontend { #define DECOMPRESS_FRONTEND_INIT(__i) { \ .inode = __i, .owned_head = Z_EROFS_PCLUSTER_TAIL, \ - .mode = Z_EROFS_PCLUSTER_FOLLOWED, .backmost = true } + .mode = Z_EROFS_PCLUSTER_FOLLOWED } static bool z_erofs_should_alloc_cache(struct z_erofs_decompress_frontend *fe) { @@ -554,7 +545,7 @@ static bool z_erofs_should_alloc_cache(struct z_erofs_decompress_frontend *fe) if (cachestrategy <= EROFS_ZIP_CACHE_DISABLED) return false; - if (fe->backmost) + if (!(fe->map.m_flags & EROFS_MAP_FULL_MAPPED)) return true; if (cachestrategy >= EROFS_ZIP_CACHE_READAROUND && @@ -851,9 +842,11 @@ err_out: return err; } -static int z_erofs_collector_begin(struct z_erofs_decompress_frontend *fe) +static int z_erofs_pcluster_begin(struct z_erofs_decompress_frontend *fe) { struct erofs_map_blocks *map = &fe->map; + struct super_block *sb = fe->inode->i_sb; + erofs_blk_t blknr = erofs_blknr(sb, map->m_pa); struct erofs_workgroup *grp = NULL; int ret; @@ -863,8 +856,7 @@ static int z_erofs_collector_begin(struct z_erofs_decompress_frontend *fe) DBG_BUGON(fe->owned_head == Z_EROFS_PCLUSTER_NIL); if (!(map->m_flags & EROFS_MAP_META)) { - grp = erofs_find_workgroup(fe->inode->i_sb, - map->m_pa >> PAGE_SHIFT); + grp = erofs_find_workgroup(sb, blknr); } else if ((map->m_pa & ~PAGE_MASK) + map->m_plen > PAGE_SIZE) { DBG_BUGON(1); return -EFSCORRUPTED; @@ -883,9 +875,26 @@ static int z_erofs_collector_begin(struct z_erofs_decompress_frontend *fe) } else if (ret) { return ret; } + z_erofs_bvec_iter_begin(&fe->biter, &fe->pcl->bvset, Z_EROFS_INLINE_BVECS, fe->pcl->vcnt); - /* since file-backed online pages are traversed in reverse order */ + if (!z_erofs_is_inline_pcluster(fe->pcl)) { + /* bind cache first when cached decompression is preferred */ + z_erofs_bind_cache(fe); + } else { + void *mptr; + + mptr = erofs_read_metabuf(&map->buf, sb, blknr, EROFS_NO_KMAP); + if (IS_ERR(mptr)) { + ret = PTR_ERR(mptr); + erofs_err(sb, "failed to get inline data %d", ret); + return ret; + } + get_page(map->buf.page); + WRITE_ONCE(fe->pcl->compressed_bvecs[0].page, map->buf.page); + fe->mode = Z_EROFS_PCLUSTER_FOLLOWED_NOINPLACE; + } + /* file-backed inplace I/O pages are traversed in reverse order */ fe->icur = z_erofs_pclusterpages(fe->pcl); return 0; } @@ -908,12 +917,12 @@ void erofs_workgroup_free_rcu(struct erofs_workgroup *grp) call_rcu(&pcl->rcu, z_erofs_rcu_callback); } -static bool z_erofs_collector_end(struct z_erofs_decompress_frontend *fe) +static void z_erofs_pcluster_end(struct z_erofs_decompress_frontend *fe) { struct z_erofs_pcluster *pcl = fe->pcl; if (!pcl) - return false; + return; z_erofs_bvec_iter_end(&fe->biter); mutex_unlock(&pcl->lock); @@ -929,37 +938,29 @@ static bool z_erofs_collector_end(struct z_erofs_decompress_frontend *fe) erofs_workgroup_put(&pcl->obj); fe->pcl = NULL; - return true; } -static int z_erofs_read_fragment(struct inode *inode, erofs_off_t pos, - struct page *page, unsigned int pageofs, - unsigned int len) +static int z_erofs_read_fragment(struct super_block *sb, struct page *page, + unsigned int cur, unsigned int end, erofs_off_t pos) { - struct super_block *sb = inode->i_sb; - struct inode *packed_inode = EROFS_I_SB(inode)->packed_inode; + struct inode *packed_inode = EROFS_SB(sb)->packed_inode; struct erofs_buf buf = __EROFS_BUF_INITIALIZER; - u8 *src, *dst; - unsigned int i, cnt; + unsigned int cnt; + u8 *src; if (!packed_inode) return -EFSCORRUPTED; buf.inode = packed_inode; - pos += EROFS_I(inode)->z_fragmentoff; - for (i = 0; i < len; i += cnt) { - cnt = min_t(unsigned int, len - i, + for (; cur < end; cur += cnt, pos += cnt) { + cnt = min_t(unsigned int, end - cur, sb->s_blocksize - erofs_blkoff(sb, pos)); src = erofs_bread(&buf, erofs_blknr(sb, pos), EROFS_KMAP); if (IS_ERR(src)) { erofs_put_metabuf(&buf); return PTR_ERR(src); } - - dst = kmap_local_page(page); - memcpy(dst + pageofs + i, src + erofs_blkoff(sb, pos), cnt); - kunmap_local(dst); - pos += cnt; + memcpy_to_page(page, cur, src + erofs_blkoff(sb, pos), cnt); } erofs_put_metabuf(&buf); return 0; @@ -972,94 +973,60 @@ static int z_erofs_do_read_page(struct z_erofs_decompress_frontend *fe, struct erofs_map_blocks *const map = &fe->map; const loff_t offset = page_offset(page); bool tight = true, exclusive; - unsigned int cur, end, spiltted; + unsigned int cur, end, len, split; int err = 0; - /* register locked file pages as online pages in pack */ z_erofs_onlinepage_init(page); - spiltted = 0; + split = 0; end = PAGE_SIZE; repeat: - cur = end - 1; - - if (offset + cur < map->m_la || - offset + cur >= map->m_la + map->m_llen) { - if (z_erofs_collector_end(fe)) - fe->backmost = false; - map->m_la = offset + cur; + if (offset + end - 1 < map->m_la || + offset + end - 1 >= map->m_la + map->m_llen) { + z_erofs_pcluster_end(fe); + map->m_la = offset + end - 1; map->m_llen = 0; err = z_erofs_map_blocks_iter(inode, map, 0); if (err) goto out; - } else { - if (fe->pcl) - goto hitted; - /* didn't get a valid pcluster previously (very rare) */ } - if (!(map->m_flags & EROFS_MAP_MAPPED) || - map->m_flags & EROFS_MAP_FRAGMENT) - goto hitted; - - err = z_erofs_collector_begin(fe); - if (err) - goto out; + cur = offset > map->m_la ? 0 : map->m_la - offset; + /* bump split parts first to avoid several separate cases */ + ++split; - if (z_erofs_is_inline_pcluster(fe->pcl)) { - void *mp; - - mp = erofs_read_metabuf(&fe->map.buf, inode->i_sb, - erofs_blknr(inode->i_sb, map->m_pa), - EROFS_NO_KMAP); - if (IS_ERR(mp)) { - err = PTR_ERR(mp); - erofs_err(inode->i_sb, - "failed to get inline page, err %d", err); - goto out; - } - get_page(fe->map.buf.page); - WRITE_ONCE(fe->pcl->compressed_bvecs[0].page, - fe->map.buf.page); - fe->mode = Z_EROFS_PCLUSTER_FOLLOWED_NOINPLACE; - } else { - /* bind cache first when cached decompression is preferred */ - z_erofs_bind_cache(fe); - } -hitted: - /* - * Ensure the current partial page belongs to this submit chain rather - * than other concurrent submit chains or the noio(bypass) chain since - * those chains are handled asynchronously thus the page cannot be used - * for inplace I/O or bvpage (should be processed in a strict order.) - */ - tight &= (fe->mode > Z_EROFS_PCLUSTER_FOLLOWED_NOINPLACE); - - cur = end - min_t(erofs_off_t, offset + end - map->m_la, end); if (!(map->m_flags & EROFS_MAP_MAPPED)) { zero_user_segment(page, cur, end); + tight = false; goto next_part; } + if (map->m_flags & EROFS_MAP_FRAGMENT) { - unsigned int pageofs, skip, len; + erofs_off_t fpos = offset + cur - map->m_la; - if (offset > map->m_la) { - pageofs = 0; - skip = offset - map->m_la; - } else { - pageofs = map->m_la & ~PAGE_MASK; - skip = 0; - } - len = min_t(unsigned int, map->m_llen - skip, end - cur); - err = z_erofs_read_fragment(inode, skip, page, pageofs, len); + len = min_t(unsigned int, map->m_llen - fpos, end - cur); + err = z_erofs_read_fragment(inode->i_sb, page, cur, cur + len, + EROFS_I(inode)->z_fragmentoff + fpos); if (err) goto out; - ++spiltted; tight = false; goto next_part; } - exclusive = (!cur && (!spiltted || tight)); + if (!fe->pcl) { + err = z_erofs_pcluster_begin(fe); + if (err) + goto out; + } + + /* + * Ensure the current partial page belongs to this submit chain rather + * than other concurrent submit chains or the noio(bypass) chain since + * those chains are handled asynchronously thus the page cannot be used + * for inplace I/O or bvpage (should be processed in a strict order.) + */ + tight &= (fe->mode > Z_EROFS_PCLUSTER_FOLLOWED_NOINPLACE); + exclusive = (!cur && ((split <= 1) || tight)); if (cur) tight &= (fe->mode >= Z_EROFS_PCLUSTER_FOLLOWED); @@ -1072,8 +1039,6 @@ hitted: goto out; z_erofs_onlinepage_split(page); - /* bump up the number of spiltted parts of a page */ - ++spiltted; if (fe->pcl->pageofs_out != (map->m_la & ~PAGE_MASK)) fe->pcl->multibases = true; if (fe->pcl->length < offset + end - map->m_la) { @@ -1094,9 +1059,7 @@ next_part: goto repeat; out: - if (err) - z_erofs_page_mark_eio(page); - z_erofs_onlinepage_endio(page); + z_erofs_onlinepage_endio(page, err); return err; } @@ -1144,10 +1107,11 @@ static void z_erofs_do_decompressed_bvec(struct z_erofs_decompress_backend *be, struct z_erofs_bvec *bvec) { struct z_erofs_bvec_item *item; + unsigned int pgnr; - if (!((bvec->offset + be->pcl->pageofs_out) & ~PAGE_MASK)) { - unsigned int pgnr; - + if (!((bvec->offset + be->pcl->pageofs_out) & ~PAGE_MASK) && + (bvec->end == PAGE_SIZE || + bvec->offset + bvec->end == be->pcl->length)) { pgnr = (bvec->offset + be->pcl->pageofs_out) >> PAGE_SHIFT; DBG_BUGON(pgnr >= be->nr_pages); if (!be->decompressed_pages[pgnr]) { @@ -1198,9 +1162,7 @@ static void z_erofs_fill_other_copies(struct z_erofs_decompress_backend *be, cur += len; } kunmap_local(dst); - if (err) - z_erofs_page_mark_eio(bvi->bvec.page); - z_erofs_onlinepage_endio(bvi->bvec.page); + z_erofs_onlinepage_endio(bvi->bvec.page, err); list_del(p); kfree(bvi); } @@ -1371,9 +1333,7 @@ out: /* recycle all individual short-lived pages */ if (z_erofs_put_shortlivedpage(be->pagepool, page)) continue; - if (err) - z_erofs_page_mark_eio(page); - z_erofs_onlinepage_endio(page); + z_erofs_onlinepage_endio(page, err); } if (be->decompressed_pages != be->onstack_pages) @@ -1409,7 +1369,10 @@ static void z_erofs_decompress_queue(const struct z_erofs_decompressqueue *io, owned = READ_ONCE(be.pcl->next); z_erofs_decompress_pcluster(&be, io->eio ? -EIO : 0); - erofs_workgroup_put(&be.pcl->obj); + if (z_erofs_is_inline_pcluster(be.pcl)) + z_erofs_free_pcluster(be.pcl); + else + erofs_workgroup_put(&be.pcl->obj); } } @@ -1847,15 +1810,10 @@ static void z_erofs_pcluster_readmore(struct z_erofs_decompress_frontend *f, page = erofs_grab_cache_page_nowait(inode->i_mapping, index); if (page) { - if (PageUptodate(page)) { + if (PageUptodate(page)) unlock_page(page); - } else { - err = z_erofs_do_read_page(f, page); - if (err) - erofs_err(inode->i_sb, - "readmore error at page %lu @ nid %llu", - index, EROFS_I(inode)->nid); - } + else + (void)z_erofs_do_read_page(f, page); put_page(page); } @@ -1867,25 +1825,25 @@ static void z_erofs_pcluster_readmore(struct z_erofs_decompress_frontend *f, static int z_erofs_read_folio(struct file *file, struct folio *folio) { - struct page *page = &folio->page; - struct inode *const inode = page->mapping->host; + struct inode *const inode = folio->mapping->host; struct erofs_sb_info *const sbi = EROFS_I_SB(inode); struct z_erofs_decompress_frontend f = DECOMPRESS_FRONTEND_INIT(inode); int err; - trace_erofs_readpage(page, false); - f.headoffset = (erofs_off_t)page->index << PAGE_SHIFT; + trace_erofs_read_folio(folio, false); + f.headoffset = (erofs_off_t)folio->index << PAGE_SHIFT; z_erofs_pcluster_readmore(&f, NULL, true); - err = z_erofs_do_read_page(&f, page); + err = z_erofs_do_read_page(&f, &folio->page); z_erofs_pcluster_readmore(&f, NULL, false); - (void)z_erofs_collector_end(&f); + z_erofs_pcluster_end(&f); /* if some compressed cluster ready, need submit them anyway */ z_erofs_runqueue(&f, z_erofs_is_sync_decompress(sbi, 0), false); - if (err) - erofs_err(inode->i_sb, "failed to read, err [%d]", err); + if (err && err != -EINTR) + erofs_err(inode->i_sb, "read error %d @ %lu of nid %llu", + err, folio->index, EROFS_I(inode)->nid); erofs_put_metabuf(&f.map.buf); erofs_release_pages(&f.pagepool); @@ -1897,38 +1855,35 @@ static void z_erofs_readahead(struct readahead_control *rac) struct inode *const inode = rac->mapping->host; struct erofs_sb_info *const sbi = EROFS_I_SB(inode); struct z_erofs_decompress_frontend f = DECOMPRESS_FRONTEND_INIT(inode); - struct page *head = NULL, *page; - unsigned int nr_pages; + struct folio *head = NULL, *folio; + unsigned int nr_folios; + int err; f.headoffset = readahead_pos(rac); z_erofs_pcluster_readmore(&f, rac, true); - nr_pages = readahead_count(rac); - trace_erofs_readpages(inode, readahead_index(rac), nr_pages, false); + nr_folios = readahead_count(rac); + trace_erofs_readpages(inode, readahead_index(rac), nr_folios, false); - while ((page = readahead_page(rac))) { - set_page_private(page, (unsigned long)head); - head = page; + while ((folio = readahead_folio(rac))) { + folio->private = head; + head = folio; } + /* traverse in reverse order for best metadata I/O performance */ while (head) { - struct page *page = head; - int err; - - /* traversal in reverse order */ - head = (void *)page_private(page); + folio = head; + head = folio_get_private(folio); - err = z_erofs_do_read_page(&f, page); - if (err) - erofs_err(inode->i_sb, - "readahead error at page %lu @ nid %llu", - page->index, EROFS_I(inode)->nid); - put_page(page); + err = z_erofs_do_read_page(&f, &folio->page); + if (err && err != -EINTR) + erofs_err(inode->i_sb, "readahead error at folio %lu @ nid %llu", + folio->index, EROFS_I(inode)->nid); } z_erofs_pcluster_readmore(&f, rac, false); - (void)z_erofs_collector_end(&f); + z_erofs_pcluster_end(&f); - z_erofs_runqueue(&f, z_erofs_is_sync_decompress(sbi, nr_pages), true); + z_erofs_runqueue(&f, z_erofs_is_sync_decompress(sbi, nr_folios), true); erofs_put_metabuf(&f.map.buf); erofs_release_pages(&f.pagepool); } diff --git a/fs/erofs/zmap.c b/fs/erofs/zmap.c index 1909ddafd9c7..7b55111fd533 100644 --- a/fs/erofs/zmap.c +++ b/fs/erofs/zmap.c @@ -561,8 +561,9 @@ static int z_erofs_do_map_blocks(struct inode *inode, if ((flags & EROFS_GET_BLOCKS_FIEMAP) || ((flags & EROFS_GET_BLOCKS_READMORE) && - map->m_algorithmformat == Z_EROFS_COMPRESSION_LZMA && - map->m_llen >= i_blocksize(inode))) { + (map->m_algorithmformat == Z_EROFS_COMPRESSION_LZMA || + map->m_algorithmformat == Z_EROFS_COMPRESSION_DEFLATE) && + map->m_llen >= i_blocksize(inode))) { err = z_erofs_get_extent_decompressedlen(&m); if (!err) map->m_flags |= EROFS_MAP_FULL_MAPPED; diff --git a/fs/eventfd.c b/fs/eventfd.c index 8aa36cd37351..33a918f9566c 100644 --- a/fs/eventfd.c +++ b/fs/eventfd.c @@ -189,7 +189,7 @@ void eventfd_ctx_do_read(struct eventfd_ctx *ctx, __u64 *cnt) { lockdep_assert_held(&ctx->wqh.lock); - *cnt = (ctx->flags & EFD_SEMAPHORE) ? 1 : ctx->count; + *cnt = ((ctx->flags & EFD_SEMAPHORE) && ctx->count) ? 1 : ctx->count; ctx->count -= *cnt; } EXPORT_SYMBOL_GPL(eventfd_ctx_do_read); diff --git a/fs/eventpoll.c b/fs/eventpoll.c index 4b1b3362f697..1d9a71a0c4c1 100644 --- a/fs/eventpoll.c +++ b/fs/eventpoll.c @@ -975,15 +975,11 @@ again: static int ep_alloc(struct eventpoll **pep) { - int error; - struct user_struct *user; struct eventpoll *ep; - user = get_current_user(); - error = -ENOMEM; ep = kzalloc(sizeof(*ep), GFP_KERNEL); if (unlikely(!ep)) - goto free_uid; + return -ENOMEM; mutex_init(&ep->mtx); rwlock_init(&ep->lock); @@ -992,16 +988,12 @@ static int ep_alloc(struct eventpoll **pep) INIT_LIST_HEAD(&ep->rdllist); ep->rbr = RB_ROOT_CACHED; ep->ovflist = EP_UNACTIVE_PTR; - ep->user = user; + ep->user = get_current_user(); refcount_set(&ep->refcount, 1); *pep = ep; return 0; - -free_uid: - free_uid(user); - return error; } /* diff --git a/fs/exec.c b/fs/exec.c index 0b9484358a49..6518e33ea813 100644 --- a/fs/exec.c +++ b/fs/exec.c @@ -1277,8 +1277,8 @@ int begin_new_exec(struct linux_binprm * bprm) /* * Must be called _before_ exec_mmap() as bprm->mm is - * not visible until then. This also enables the update - * to be lockless. + * not visible until then. Doing it here also ensures + * we don't race against replace_mm_exe_file(). */ retval = set_mm_exe_file(bprm->mm, bprm->file); if (retval) diff --git a/fs/exfat/Kconfig b/fs/exfat/Kconfig index 147edeb04469..cbeca8e44d9b 100644 --- a/fs/exfat/Kconfig +++ b/fs/exfat/Kconfig @@ -2,6 +2,7 @@ config EXFAT_FS tristate "exFAT filesystem support" + select BUFFER_HEAD select NLS select LEGACY_DIRECT_IO help diff --git a/fs/exfat/balloc.c b/fs/exfat/balloc.c index 9f42f25fab92..e918decb3735 100644 --- a/fs/exfat/balloc.c +++ b/fs/exfat/balloc.c @@ -69,7 +69,7 @@ static int exfat_allocate_bitmap(struct super_block *sb, } sbi->map_sectors = ((need_map_size - 1) >> (sb->s_blocksize_bits)) + 1; - sbi->vol_amap = kmalloc_array(sbi->map_sectors, + sbi->vol_amap = kvmalloc_array(sbi->map_sectors, sizeof(struct buffer_head *), GFP_KERNEL); if (!sbi->vol_amap) return -ENOMEM; @@ -84,7 +84,7 @@ static int exfat_allocate_bitmap(struct super_block *sb, while (j < i) brelse(sbi->vol_amap[j++]); - kfree(sbi->vol_amap); + kvfree(sbi->vol_amap); sbi->vol_amap = NULL; return -EIO; } @@ -138,7 +138,7 @@ void exfat_free_bitmap(struct exfat_sb_info *sbi) for (i = 0; i < sbi->map_sectors; i++) __brelse(sbi->vol_amap[i]); - kfree(sbi->vol_amap); + kvfree(sbi->vol_amap); } int exfat_set_bitmap(struct inode *inode, unsigned int clu, bool sync) diff --git a/fs/exfat/dir.c b/fs/exfat/dir.c index 957574180a5e..e1586bba6d86 100644 --- a/fs/exfat/dir.c +++ b/fs/exfat/dir.c @@ -34,6 +34,7 @@ static int exfat_get_uniname_from_ext_entry(struct super_block *sb, { int i, err; struct exfat_entry_set_cache es; + unsigned int uni_len = 0, len; err = exfat_get_dentry_set(&es, sb, p_dir, entry, ES_ALL_ENTRIES); if (err) @@ -52,7 +53,10 @@ static int exfat_get_uniname_from_ext_entry(struct super_block *sb, if (exfat_get_entry_type(ep) != TYPE_EXTEND) break; - exfat_extract_uni_name(ep, uniname); + len = exfat_extract_uni_name(ep, uniname); + uni_len += len; + if (len != EXFAT_FILE_NAME_LEN || uni_len >= MAX_NAME_LENGTH) + break; uniname += EXFAT_FILE_NAME_LEN; } @@ -214,7 +218,10 @@ static void exfat_free_namebuf(struct exfat_dentry_namebuf *nb) exfat_init_namebuf(nb); } -/* skip iterating emit_dots when dir is empty */ +/* + * Before calling dir_emit*(), sbi->s_lock should be released + * because page fault can occur in dir_emit*(). + */ #define ITER_POS_FILLED_DOTS (2) static int exfat_iterate(struct file *file, struct dir_context *ctx) { @@ -229,11 +236,10 @@ static int exfat_iterate(struct file *file, struct dir_context *ctx) int err = 0, fake_offset = 0; exfat_init_namebuf(nb); - mutex_lock(&EXFAT_SB(sb)->s_lock); cpos = ctx->pos; if (!dir_emit_dots(file, ctx)) - goto unlock; + goto out; if (ctx->pos == ITER_POS_FILLED_DOTS) { cpos = 0; @@ -245,16 +251,18 @@ static int exfat_iterate(struct file *file, struct dir_context *ctx) /* name buffer should be allocated before use */ err = exfat_alloc_namebuf(nb); if (err) - goto unlock; + goto out; get_new: + mutex_lock(&EXFAT_SB(sb)->s_lock); + if (ei->flags == ALLOC_NO_FAT_CHAIN && cpos >= i_size_read(inode)) goto end_of_dir; err = exfat_readdir(inode, &cpos, &de); if (err) { /* - * At least we tried to read a sector. Move cpos to next sector - * position (should be aligned). + * At least we tried to read a sector. + * Move cpos to next sector position (should be aligned). */ if (err == -EIO) { cpos += 1 << (sb->s_blocksize_bits); @@ -277,16 +285,10 @@ get_new: inum = iunique(sb, EXFAT_ROOT_INO); } - /* - * Before calling dir_emit(), sb_lock should be released. - * Because page fault can occur in dir_emit() when the size - * of buffer given from user is larger than one page size. - */ mutex_unlock(&EXFAT_SB(sb)->s_lock); if (!dir_emit(ctx, nb->lfn, strlen(nb->lfn), inum, (de.attr & ATTR_SUBDIR) ? DT_DIR : DT_REG)) - goto out_unlocked; - mutex_lock(&EXFAT_SB(sb)->s_lock); + goto out; ctx->pos = cpos; goto get_new; @@ -294,9 +296,8 @@ end_of_dir: if (!cpos && fake_offset) cpos = ITER_POS_FILLED_DOTS; ctx->pos = cpos; -unlock: mutex_unlock(&EXFAT_SB(sb)->s_lock); -out_unlocked: +out: /* * To improve performance, free namebuf after unlock sb_lock. * If namebuf is not allocated, this function do nothing @@ -305,10 +306,11 @@ out_unlocked: return err; } +WRAP_DIR_ITER(exfat_iterate) // FIXME! const struct file_operations exfat_dir_operations = { .llseek = generic_file_llseek, .read = generic_read_dir, - .iterate = exfat_iterate, + .iterate_shared = shared_exfat_iterate, .unlocked_ioctl = exfat_ioctl, #ifdef CONFIG_COMPAT .compat_ioctl = exfat_compat_ioctl, @@ -1079,7 +1081,8 @@ rewind: if (entry_type == TYPE_EXTEND) { unsigned short entry_uniname[16], unichar; - if (step != DIRENT_STEP_NAME) { + if (step != DIRENT_STEP_NAME || + name_len >= MAX_NAME_LENGTH) { step = DIRENT_STEP_FILE; continue; } diff --git a/fs/exfat/exfat_fs.h b/fs/exfat/exfat_fs.h index 729ada9e26e8..f55498e5c23d 100644 --- a/fs/exfat/exfat_fs.h +++ b/fs/exfat/exfat_fs.h @@ -273,8 +273,6 @@ struct exfat_sb_info { spinlock_t inode_hash_lock; struct hlist_head inode_hashtable[EXFAT_HASH_SIZE]; - - struct rcu_head rcu; }; #define EXFAT_CACHE_VALID 0 diff --git a/fs/exfat/file.c b/fs/exfat/file.c index 3cbd270e0cba..32395ef686a2 100644 --- a/fs/exfat/file.c +++ b/fs/exfat/file.c @@ -22,7 +22,7 @@ static int exfat_cont_expand(struct inode *inode, loff_t size) if (err) return err; - inode->i_ctime = inode->i_mtime = current_time(inode); + inode->i_mtime = inode_set_ctime_current(inode); mark_inode_dirty(inode); if (!IS_SYNC(inode)) @@ -232,7 +232,7 @@ int exfat_getattr(struct mnt_idmap *idmap, const struct path *path, struct inode *inode = d_backing_inode(path->dentry); struct exfat_inode_info *ei = EXFAT_I(inode); - generic_fillattr(&nop_mnt_idmap, inode, stat); + generic_fillattr(&nop_mnt_idmap, request_mask, inode, stat); exfat_truncate_atime(&stat->atime); stat->result_mask |= STATX_BTIME; stat->btime.tv_sec = ei->i_crtime.tv_sec; @@ -290,7 +290,7 @@ int exfat_setattr(struct mnt_idmap *idmap, struct dentry *dentry, } if (attr->ia_valid & ATTR_SIZE) - inode->i_mtime = inode->i_ctime = current_time(inode); + inode->i_mtime = inode_set_ctime_current(inode); setattr_copy(&nop_mnt_idmap, inode, attr); exfat_truncate_atime(&inode->i_atime); diff --git a/fs/exfat/inode.c b/fs/exfat/inode.c index 481dd338f2b8..13329baeafbc 100644 --- a/fs/exfat/inode.c +++ b/fs/exfat/inode.c @@ -355,7 +355,7 @@ static void exfat_write_failed(struct address_space *mapping, loff_t to) if (to > i_size_read(inode)) { truncate_pagecache(inode, i_size_read(inode)); - inode->i_mtime = inode->i_ctime = current_time(inode); + inode->i_mtime = inode_set_ctime_current(inode); exfat_truncate(inode); } } @@ -398,7 +398,7 @@ static int exfat_write_end(struct file *file, struct address_space *mapping, exfat_write_failed(mapping, pos+len); if (!(err < 0) && !(ei->attr & ATTR_ARCHIVE)) { - inode->i_mtime = inode->i_ctime = current_time(inode); + inode->i_mtime = inode_set_ctime_current(inode); ei->attr |= ATTR_ARCHIVE; mark_inode_dirty(inode); } @@ -577,7 +577,7 @@ static int exfat_fill_inode(struct inode *inode, struct exfat_dir_entry *info) inode->i_blocks = round_up(i_size_read(inode), sbi->cluster_size) >> 9; inode->i_mtime = info->mtime; - inode->i_ctime = info->mtime; + inode_set_ctime_to_ts(inode, info->mtime); ei->i_crtime = info->crtime; inode->i_atime = info->atime; diff --git a/fs/exfat/namei.c b/fs/exfat/namei.c index e0ff9d156f6f..1b9f587f6cca 100644 --- a/fs/exfat/namei.c +++ b/fs/exfat/namei.c @@ -569,7 +569,7 @@ static int exfat_create(struct mnt_idmap *idmap, struct inode *dir, goto unlock; inode_inc_iversion(dir); - dir->i_ctime = dir->i_mtime = current_time(dir); + dir->i_mtime = inode_set_ctime_current(dir); if (IS_DIRSYNC(dir)) exfat_sync_inode(dir); else @@ -582,8 +582,7 @@ static int exfat_create(struct mnt_idmap *idmap, struct inode *dir, goto unlock; inode_inc_iversion(inode); - inode->i_mtime = inode->i_atime = inode->i_ctime = - EXFAT_I(inode)->i_crtime = current_time(inode); + inode->i_mtime = inode->i_atime = EXFAT_I(inode)->i_crtime = inode_set_ctime_current(inode); exfat_truncate_atime(&inode->i_atime); /* timestamp is already written, so mark_inode_dirty() is unneeded. */ @@ -817,7 +816,7 @@ static int exfat_unlink(struct inode *dir, struct dentry *dentry) ei->dir.dir = DIR_DELETED; inode_inc_iversion(dir); - dir->i_mtime = dir->i_atime = current_time(dir); + dir->i_mtime = dir->i_atime = inode_set_ctime_current(dir); exfat_truncate_atime(&dir->i_atime); if (IS_DIRSYNC(dir)) exfat_sync_inode(dir); @@ -825,7 +824,7 @@ static int exfat_unlink(struct inode *dir, struct dentry *dentry) mark_inode_dirty(dir); clear_nlink(inode); - inode->i_mtime = inode->i_atime = current_time(inode); + inode->i_mtime = inode->i_atime = inode_set_ctime_current(inode); exfat_truncate_atime(&inode->i_atime); exfat_unhash_inode(inode); exfat_d_version_set(dentry, inode_query_iversion(dir)); @@ -852,7 +851,7 @@ static int exfat_mkdir(struct mnt_idmap *idmap, struct inode *dir, goto unlock; inode_inc_iversion(dir); - dir->i_ctime = dir->i_mtime = current_time(dir); + dir->i_mtime = inode_set_ctime_current(dir); if (IS_DIRSYNC(dir)) exfat_sync_inode(dir); else @@ -866,8 +865,7 @@ static int exfat_mkdir(struct mnt_idmap *idmap, struct inode *dir, goto unlock; inode_inc_iversion(inode); - inode->i_mtime = inode->i_atime = inode->i_ctime = - EXFAT_I(inode)->i_crtime = current_time(inode); + inode->i_mtime = inode->i_atime = EXFAT_I(inode)->i_crtime = inode_set_ctime_current(inode); exfat_truncate_atime(&inode->i_atime); /* timestamp is already written, so mark_inode_dirty() is unneeded. */ @@ -979,7 +977,7 @@ static int exfat_rmdir(struct inode *dir, struct dentry *dentry) ei->dir.dir = DIR_DELETED; inode_inc_iversion(dir); - dir->i_mtime = dir->i_atime = current_time(dir); + dir->i_mtime = dir->i_atime = inode_set_ctime_current(dir); exfat_truncate_atime(&dir->i_atime); if (IS_DIRSYNC(dir)) exfat_sync_inode(dir); @@ -988,7 +986,7 @@ static int exfat_rmdir(struct inode *dir, struct dentry *dentry) drop_nlink(dir); clear_nlink(inode); - inode->i_mtime = inode->i_atime = current_time(inode); + inode->i_mtime = inode->i_atime = inode_set_ctime_current(inode); exfat_truncate_atime(&inode->i_atime); exfat_unhash_inode(inode); exfat_d_version_set(dentry, inode_query_iversion(dir)); @@ -1312,8 +1310,8 @@ static int exfat_rename(struct mnt_idmap *idmap, goto unlock; inode_inc_iversion(new_dir); - new_dir->i_ctime = new_dir->i_mtime = new_dir->i_atime = - EXFAT_I(new_dir)->i_crtime = current_time(new_dir); + simple_rename_timestamp(old_dir, old_dentry, new_dir, new_dentry); + EXFAT_I(new_dir)->i_crtime = current_time(new_dir); exfat_truncate_atime(&new_dir->i_atime); if (IS_DIRSYNC(new_dir)) exfat_sync_inode(new_dir); @@ -1336,7 +1334,6 @@ static int exfat_rename(struct mnt_idmap *idmap, } inode_inc_iversion(old_dir); - old_dir->i_ctime = old_dir->i_mtime = current_time(old_dir); if (IS_DIRSYNC(old_dir)) exfat_sync_inode(old_dir); else @@ -1354,8 +1351,7 @@ static int exfat_rename(struct mnt_idmap *idmap, exfat_warn(sb, "abnormal access to an inode dropped"); WARN_ON(new_inode->i_nlink == 0); } - new_inode->i_ctime = EXFAT_I(new_inode)->i_crtime = - current_time(new_inode); + EXFAT_I(new_inode)->i_crtime = current_time(new_inode); } unlock: diff --git a/fs/exfat/super.c b/fs/exfat/super.c index 8c32460e031e..2778bd9b631e 100644 --- a/fs/exfat/super.c +++ b/fs/exfat/super.c @@ -31,16 +31,6 @@ static void exfat_free_iocharset(struct exfat_sb_info *sbi) kfree(sbi->options.iocharset); } -static void exfat_delayed_free(struct rcu_head *p) -{ - struct exfat_sb_info *sbi = container_of(p, struct exfat_sb_info, rcu); - - unload_nls(sbi->nls_io); - exfat_free_iocharset(sbi); - exfat_free_upcase_table(sbi); - kfree(sbi); -} - static void exfat_put_super(struct super_block *sb) { struct exfat_sb_info *sbi = EXFAT_SB(sb); @@ -50,7 +40,8 @@ static void exfat_put_super(struct super_block *sb) brelse(sbi->boot_bh); mutex_unlock(&sbi->s_lock); - call_rcu(&sbi->rcu, exfat_delayed_free); + unload_nls(sbi->nls_io); + exfat_free_upcase_table(sbi); } static int exfat_sync_fs(struct super_block *sb, int wait) @@ -379,8 +370,7 @@ static int exfat_read_root(struct inode *inode) ei->i_size_ondisk = i_size_read(inode); exfat_save_attr(inode, ATTR_SUBDIR); - inode->i_mtime = inode->i_atime = inode->i_ctime = ei->i_crtime = - current_time(inode); + inode->i_mtime = inode->i_atime = ei->i_crtime = inode_set_ctime_current(inode); exfat_truncate_atime(&inode->i_atime); return 0; } @@ -710,9 +700,6 @@ free_table: check_nls_io: unload_nls(sbi->nls_io); - exfat_free_iocharset(sbi); - sb->s_fs_info = NULL; - kfree(sbi); return err; } @@ -721,14 +708,18 @@ static int exfat_get_tree(struct fs_context *fc) return get_tree_bdev(fc, exfat_fill_super); } +static void exfat_free_sbi(struct exfat_sb_info *sbi) +{ + exfat_free_iocharset(sbi); + kfree(sbi); +} + static void exfat_free(struct fs_context *fc) { struct exfat_sb_info *sbi = fc->s_fs_info; - if (sbi) { - exfat_free_iocharset(sbi); - kfree(sbi); - } + if (sbi) + exfat_free_sbi(sbi); } static int exfat_reconfigure(struct fs_context *fc) @@ -773,12 +764,21 @@ static int exfat_init_fs_context(struct fs_context *fc) return 0; } +static void exfat_kill_sb(struct super_block *sb) +{ + struct exfat_sb_info *sbi = sb->s_fs_info; + + kill_block_super(sb); + if (sbi) + exfat_free_sbi(sbi); +} + static struct file_system_type exfat_fs_type = { .owner = THIS_MODULE, .name = "exfat", .init_fs_context = exfat_init_fs_context, .parameters = exfat_parameters, - .kill_sb = kill_block_super, + .kill_sb = exfat_kill_sb, .fs_flags = FS_REQUIRES_DEV, }; diff --git a/fs/exportfs/expfs.c b/fs/exportfs/expfs.c index 40e624cf7e92..c20704aa21b3 100644 --- a/fs/exportfs/expfs.c +++ b/fs/exportfs/expfs.c @@ -315,7 +315,7 @@ static int get_name(const struct path *path, char *name, struct dentry *child) goto out; error = -EINVAL; - if (!file->f_op->iterate && !file->f_op->iterate_shared) + if (!file->f_op->iterate_shared) goto out_close; buffer.sequence = 0; @@ -386,6 +386,7 @@ static int export_encode_fh(struct inode *inode, struct fid *fid, * @inode: the object to encode * @fid: where to store the file handle fragment * @max_len: maximum length to store there + * @parent: parent directory inode, if wanted * @flags: properties of the requested file handle * * Returns an enum fid_type or a negative errno. diff --git a/fs/ext2/Kconfig b/fs/ext2/Kconfig index 77393fda99af..74d98965902e 100644 --- a/fs/ext2/Kconfig +++ b/fs/ext2/Kconfig @@ -1,6 +1,7 @@ # SPDX-License-Identifier: GPL-2.0-only config EXT2_FS tristate "Second extended fs support" + select BUFFER_HEAD select FS_IOMAP select LEGACY_DIRECT_IO help diff --git a/fs/ext2/acl.c b/fs/ext2/acl.c index 82b17d7fc93f..7e54c31589c7 100644 --- a/fs/ext2/acl.c +++ b/fs/ext2/acl.c @@ -237,7 +237,7 @@ ext2_set_acl(struct mnt_idmap *idmap, struct dentry *dentry, error = __ext2_set_acl(inode, acl, type); if (!error && update_mode) { inode->i_mode = mode; - inode->i_ctime = current_time(inode); + inode_set_ctime_current(inode); mark_inode_dirty(inode); } return error; diff --git a/fs/ext2/balloc.c b/fs/ext2/balloc.c index c8049c90323d..e124f3d709b2 100644 --- a/fs/ext2/balloc.c +++ b/fs/ext2/balloc.c @@ -472,8 +472,8 @@ void ext2_discard_reservation(struct inode *inode) * @block: start physical block to free * @count: number of blocks to free */ -void ext2_free_blocks (struct inode * inode, unsigned long block, - unsigned long count) +void ext2_free_blocks(struct inode * inode, ext2_fsblk_t block, + unsigned long count) { struct buffer_head *bitmap_bh = NULL; struct buffer_head * bh2; @@ -716,36 +716,34 @@ fail_access: } /** - * find_next_reservable_window(): - * find a reservable space within the given range. - * It does not allocate the reservation window for now: - * alloc_new_reservation() will do the work later. + * find_next_reservable_window - Find a reservable space within the given range. + * @search_head: The list to search. + * @my_rsv: The reservation we're currently using. + * @sb: The super block. + * @start_block: The first block we consider to start the real search from + * @last_block: The maximum block number that our goal reservable space + * could start from. * - * @search_head: the head of the searching list; - * This is not necessarily the list head of the whole filesystem + * It does not allocate the reservation window: alloc_new_reservation() + * will do the work later. * - * We have both head and start_block to assist the search - * for the reservable space. The list starts from head, - * but we will shift to the place where start_block is, - * then start from there, when looking for a reservable space. + * We search the given range, rather than the whole reservation double + * linked list, (start_block, last_block) to find a free region that is + * of my size and has not been reserved. * - * @sb: the super block. + * @search_head is not necessarily the list head of the whole filesystem. + * We have both head and @start_block to assist the search for the + * reservable space. The list starts from head, but we will shift to + * the place where start_block is, then start from there, when looking + * for a reservable space. * - * @start_block: the first block we consider to start the real search from - * - * @last_block: - * the maximum block number that our goal reservable space - * could start from. This is normally the last block in this - * group. The search will end when we found the start of next - * possible reservable space is out of this boundary. - * This could handle the cross boundary reservation window - * request. - * - * basically we search from the given range, rather than the whole - * reservation double linked list, (start_block, last_block) - * to find a free region that is of my size and has not - * been reserved. + * @last_block is normally the last block in this group. The search will end + * when we found the start of next possible reservable space is out + * of this boundary. This could handle the cross boundary reservation + * window request. * + * Return: -1 if we could not find a range of sufficient size. If we could, + * return 0 and fill in @my_rsv with the range information. */ static int find_next_reservable_window( struct ext2_reserve_window_node *search_head, @@ -833,41 +831,34 @@ static int find_next_reservable_window( } /** - * alloc_new_reservation()--allocate a new reservation window - * - * To make a new reservation, we search part of the filesystem - * reservation list (the list that inside the group). We try to - * allocate a new reservation window near the allocation goal, - * or the beginning of the group, if there is no goal. - * - * We first find a reservable space after the goal, then from - * there, we check the bitmap for the first free block after - * it. If there is no free block until the end of group, then the - * whole group is full, we failed. Otherwise, check if the free - * block is inside the expected reservable space, if so, we - * succeed. - * If the first free block is outside the reservable space, then - * start from the first free block, we search for next available - * space, and go on. + * alloc_new_reservation - Allocate a new reservation window. + * @my_rsv: The reservation we're currently using. + * @grp_goal: The goal block relative to the start of the group. + * @sb: The super block. + * @group: The group we are trying to allocate in. + * @bitmap_bh: The block group block bitmap. * - * on succeed, a new reservation will be found and inserted into the list - * It contains at least one free block, and it does not overlap with other - * reservation windows. + * To make a new reservation, we search part of the filesystem reservation + * list (the list inside the group). We try to allocate a new + * reservation window near @grp_goal, or the beginning of the + * group, if @grp_goal is negative. * - * failed: we failed to find a reservation window in this group + * We first find a reservable space after the goal, then from there, + * we check the bitmap for the first free block after it. If there is + * no free block until the end of group, then the whole group is full, + * we failed. Otherwise, check if the free block is inside the expected + * reservable space, if so, we succeed. * - * @my_rsv: the reservation + * If the first free block is outside the reservable space, then start + * from the first free block, we search for next available space, and + * go on. * - * @grp_goal: The goal (group-relative). It is where the search for a - * free reservable space should start from. - * if we have a goal(goal >0 ), then start from there, - * no goal(goal = -1), we start from the first block - * of the group. - * - * @sb: the super block - * @group: the group we are trying to allocate in - * @bitmap_bh: the block group block bitmap + * on succeed, a new reservation will be found and inserted into the + * list. It contains at least one free block, and it does not overlap + * with other reservation windows. * + * Return: 0 on success, -1 if we failed to find a reservation window + * in this group */ static int alloc_new_reservation(struct ext2_reserve_window_node *my_rsv, ext2_grpblk_t grp_goal, struct super_block *sb, @@ -1131,8 +1122,13 @@ ext2_try_to_allocate_with_rsv(struct super_block *sb, unsigned int group, if ((my_rsv->rsv_start > group_last_block) || (my_rsv->rsv_end < group_first_block)) { + ext2_error(sb, __func__, + "Reservation out of group %u range goal %d fsb[%lu,%lu] rsv[%lu, %lu]", + group, grp_goal, group_first_block, + group_last_block, my_rsv->rsv_start, + my_rsv->rsv_end); rsv_window_dump(&EXT2_SB(sb)->s_rsv_window_root, 1); - BUG(); + return -1; } ret = ext2_try_to_allocate(sb, group, bitmap_bh, grp_goal, &num, &my_rsv->rsv_window); @@ -1193,6 +1189,7 @@ int ext2_data_block_valid(struct ext2_sb_info *sbi, ext2_fsblk_t start_blk, * @goal: given target block(filesystem wide) * @count: target number of blocks to allocate * @errp: error code + * @flags: allocate flags * * ext2_new_blocks uses a goal block to assist allocation. If the goal is * free, or there is a free block within 32 blocks of the goal, that block @@ -1202,7 +1199,7 @@ int ext2_data_block_valid(struct ext2_sb_info *sbi, ext2_fsblk_t start_blk, * This function also updates quota and i_blocks field. */ ext2_fsblk_t ext2_new_blocks(struct inode *inode, ext2_fsblk_t goal, - unsigned long *count, int *errp) + unsigned long *count, int *errp, unsigned int flags) { struct buffer_head *bitmap_bh = NULL; struct buffer_head *gdp_bh; @@ -1241,15 +1238,15 @@ ext2_fsblk_t ext2_new_blocks(struct inode *inode, ext2_fsblk_t goal, es = EXT2_SB(sb)->s_es; ext2_debug("goal=%lu.\n", goal); /* - * Allocate a block from reservation only when - * filesystem is mounted with reservation(default,-o reservation), and - * it's a regular file, and - * the desired window size is greater than 0 (One could use ioctl - * command EXT2_IOC_SETRSVSZ to set the window size to 0 to turn off - * reservation on that particular file) + * Allocate a block from reservation only when the filesystem is + * mounted with reservation(default,-o reservation), and it's a regular + * file, and the desired window size is greater than 0 (One could use + * ioctl command EXT2_IOC_SETRSVSZ to set the window size to 0 to turn + * off reservation on that particular file). Also do not use the + * reservation window if the caller asked us not to do it. */ block_i = EXT2_I(inode)->i_block_alloc_info; - if (block_i) { + if (!(flags & EXT2_ALLOC_NORESERVE) && block_i) { windowsz = block_i->rsv_window_node.rsv_goal_size; if (windowsz > 0) my_rsv = &block_i->rsv_window_node; @@ -1429,13 +1426,6 @@ out: return 0; } -ext2_fsblk_t ext2_new_block(struct inode *inode, unsigned long goal, int *errp) -{ - unsigned long count = 1; - - return ext2_new_blocks(inode, goal, &count, errp); -} - #ifdef EXT2FS_DEBUG unsigned long ext2_count_free(struct buffer_head *map, unsigned int numchars) diff --git a/fs/ext2/dir.c b/fs/ext2/dir.c index 42db804794bd..b335f17f682f 100644 --- a/fs/ext2/dir.c +++ b/fs/ext2/dir.c @@ -468,7 +468,7 @@ int ext2_set_link(struct inode *dir, struct ext2_dir_entry_2 *de, ext2_set_de_type(de, inode); ext2_commit_chunk(page, pos, len); if (update_times) - dir->i_mtime = dir->i_ctime = current_time(dir); + dir->i_mtime = inode_set_ctime_current(dir); EXT2_I(dir)->i_flags &= ~EXT2_BTREE_FL; mark_inode_dirty(dir); return ext2_handle_dirsync(dir); @@ -555,7 +555,7 @@ got_it: de->inode = cpu_to_le32(inode->i_ino); ext2_set_de_type (de, inode); ext2_commit_chunk(page, pos, rec_len); - dir->i_mtime = dir->i_ctime = current_time(dir); + dir->i_mtime = inode_set_ctime_current(dir); EXT2_I(dir)->i_flags &= ~EXT2_BTREE_FL; mark_inode_dirty(dir); err = ext2_handle_dirsync(dir); @@ -606,7 +606,7 @@ int ext2_delete_entry(struct ext2_dir_entry_2 *dir, struct page *page) pde->rec_len = ext2_rec_len_to_disk(to - from); dir->inode = 0; ext2_commit_chunk(page, pos, to - from); - inode->i_ctime = inode->i_mtime = current_time(inode); + inode->i_mtime = inode_set_ctime_current(inode); EXT2_I(inode)->i_flags &= ~EXT2_BTREE_FL; mark_inode_dirty(inode); return ext2_handle_dirsync(inode); diff --git a/fs/ext2/ext2.h b/fs/ext2/ext2.h index 35a041c47c38..7fdd685c384d 100644 --- a/fs/ext2/ext2.h +++ b/fs/ext2/ext2.h @@ -399,6 +399,12 @@ struct ext2_inode { #define EXT2_ERRORS_DEFAULT EXT2_ERRORS_CONTINUE /* + * Allocation flags + */ +#define EXT2_ALLOC_NORESERVE 0x1 /* Do not use reservation + * window for allocation */ + +/* * Structure of the super block */ struct ext2_super_block { @@ -695,13 +701,11 @@ static inline struct ext2_inode_info *EXT2_I(struct inode *inode) /* balloc.c */ extern int ext2_bg_has_super(struct super_block *sb, int group); extern unsigned long ext2_bg_num_gdb(struct super_block *sb, int group); -extern ext2_fsblk_t ext2_new_block(struct inode *, unsigned long, int *); -extern ext2_fsblk_t ext2_new_blocks(struct inode *, unsigned long, - unsigned long *, int *); +extern ext2_fsblk_t ext2_new_blocks(struct inode *, ext2_fsblk_t, + unsigned long *, int *, unsigned int); extern int ext2_data_block_valid(struct ext2_sb_info *sbi, ext2_fsblk_t start_blk, unsigned int count); -extern void ext2_free_blocks (struct inode *, unsigned long, - unsigned long); +extern void ext2_free_blocks(struct inode *, ext2_fsblk_t, unsigned long); extern unsigned long ext2_count_free_blocks (struct super_block *); extern unsigned long ext2_count_dirs (struct super_block *); extern struct ext2_group_desc * ext2_get_group_desc(struct super_block * sb, diff --git a/fs/ext2/ialloc.c b/fs/ext2/ialloc.c index a4e1d7a9c544..c24d0de95a83 100644 --- a/fs/ext2/ialloc.c +++ b/fs/ext2/ialloc.c @@ -273,7 +273,6 @@ static int find_group_orlov(struct super_block *sb, struct inode *parent) if ((parent == d_inode(sb->s_root)) || (EXT2_I(parent)->i_flags & EXT2_TOPDIR_FL)) { - struct ext2_group_desc *best_desc = NULL; int best_ndir = inodes_per_group; int best_group = -1; @@ -291,10 +290,8 @@ static int find_group_orlov(struct super_block *sb, struct inode *parent) continue; best_group = group; best_ndir = le16_to_cpu(desc->bg_used_dirs_count); - best_desc = desc; } if (best_group >= 0) { - desc = best_desc; group = best_group; goto found; } @@ -549,7 +546,7 @@ got: inode->i_ino = ino; inode->i_blocks = 0; - inode->i_mtime = inode->i_atime = inode->i_ctime = current_time(inode); + inode->i_mtime = inode->i_atime = inode_set_ctime_current(inode); memset(ei->i_data, 0, sizeof(ei->i_data)); ei->i_flags = ext2_mask_flags(mode, EXT2_I(dir)->i_flags & EXT2_FL_INHERITED); diff --git a/fs/ext2/inode.c b/fs/ext2/inode.c index 75983215c7a1..314b415ee518 100644 --- a/fs/ext2/inode.c +++ b/fs/ext2/inode.c @@ -385,12 +385,16 @@ ext2_blks_to_allocate(Indirect * branch, int k, unsigned long blks, } /** - * ext2_alloc_blocks: multiple allocate blocks needed for a branch - * @indirect_blks: the number of blocks need to allocate for indirect - * blocks - * @blks: the number of blocks need to allocate for direct blocks - * @new_blocks: on return it will store the new block numbers for - * the indirect blocks(if needed) and the first direct block, + * ext2_alloc_blocks: Allocate multiple blocks needed for a branch. + * @inode: Owner. + * @goal: Preferred place for allocation. + * @indirect_blks: The number of blocks needed to allocate for indirect blocks. + * @blks: The number of blocks need to allocate for direct blocks. + * @new_blocks: On return it will store the new block numbers for + * the indirect blocks(if needed) and the first direct block. + * @err: Error pointer. + * + * Return: Number of blocks allocated. */ static int ext2_alloc_blocks(struct inode *inode, ext2_fsblk_t goal, int indirect_blks, int blks, @@ -415,7 +419,7 @@ static int ext2_alloc_blocks(struct inode *inode, while (1) { count = target; /* allocating blocks for indirect blocks and direct blocks */ - current_block = ext2_new_blocks(inode,goal,&count,err); + current_block = ext2_new_blocks(inode, goal, &count, err, 0); if (*err) goto failed_out; @@ -595,7 +599,7 @@ static void ext2_splice_branch(struct inode *inode, if (where->bh) mark_buffer_dirty_inode(where->bh, inode); - inode->i_ctime = current_time(inode); + inode_set_ctime_current(inode); mark_inode_dirty(inode); } @@ -1082,8 +1086,8 @@ no_top: */ static inline void ext2_free_data(struct inode *inode, __le32 *p, __le32 *q) { - unsigned long block_to_free = 0, count = 0; - unsigned long nr; + ext2_fsblk_t block_to_free = 0, count = 0; + ext2_fsblk_t nr; for ( ; p < q ; p++) { nr = le32_to_cpu(*p); @@ -1123,7 +1127,7 @@ static inline void ext2_free_data(struct inode *inode, __le32 *p, __le32 *q) static void ext2_free_branches(struct inode *inode, __le32 *p, __le32 *q, int depth) { struct buffer_head * bh; - unsigned long nr; + ext2_fsblk_t nr; if (depth--) { int addr_per_block = EXT2_ADDR_PER_BLOCK(inode->i_sb); @@ -1287,7 +1291,7 @@ static int ext2_setsize(struct inode *inode, loff_t newsize) __ext2_truncate_blocks(inode, newsize); filemap_invalidate_unlock(inode->i_mapping); - inode->i_mtime = inode->i_ctime = current_time(inode); + inode->i_mtime = inode_set_ctime_current(inode); if (inode_needs_sync(inode)) { sync_mapping_buffers(inode->i_mapping); sync_inode_metadata(inode, 1); @@ -1409,9 +1413,9 @@ struct inode *ext2_iget (struct super_block *sb, unsigned long ino) set_nlink(inode, le16_to_cpu(raw_inode->i_links_count)); inode->i_size = le32_to_cpu(raw_inode->i_size); inode->i_atime.tv_sec = (signed)le32_to_cpu(raw_inode->i_atime); - inode->i_ctime.tv_sec = (signed)le32_to_cpu(raw_inode->i_ctime); + inode_set_ctime(inode, (signed)le32_to_cpu(raw_inode->i_ctime), 0); inode->i_mtime.tv_sec = (signed)le32_to_cpu(raw_inode->i_mtime); - inode->i_atime.tv_nsec = inode->i_mtime.tv_nsec = inode->i_ctime.tv_nsec = 0; + inode->i_atime.tv_nsec = inode->i_mtime.tv_nsec = 0; ei->i_dtime = le32_to_cpu(raw_inode->i_dtime); /* We now have enough fields to check if the inode was active or not. * This is needed because nfsd might try to access dead inodes @@ -1541,7 +1545,7 @@ static int __ext2_write_inode(struct inode *inode, int do_sync) raw_inode->i_links_count = cpu_to_le16(inode->i_nlink); raw_inode->i_size = cpu_to_le32(inode->i_size); raw_inode->i_atime = cpu_to_le32(inode->i_atime.tv_sec); - raw_inode->i_ctime = cpu_to_le32(inode->i_ctime.tv_sec); + raw_inode->i_ctime = cpu_to_le32(inode_get_ctime(inode).tv_sec); raw_inode->i_mtime = cpu_to_le32(inode->i_mtime.tv_sec); raw_inode->i_blocks = cpu_to_le32(inode->i_blocks); @@ -1628,7 +1632,7 @@ int ext2_getattr(struct mnt_idmap *idmap, const struct path *path, STATX_ATTR_IMMUTABLE | STATX_ATTR_NODUMP); - generic_fillattr(&nop_mnt_idmap, inode, stat); + generic_fillattr(&nop_mnt_idmap, request_mask, inode, stat); return 0; } diff --git a/fs/ext2/ioctl.c b/fs/ext2/ioctl.c index cc87d413eb43..44e04484e570 100644 --- a/fs/ext2/ioctl.c +++ b/fs/ext2/ioctl.c @@ -44,7 +44,7 @@ int ext2_fileattr_set(struct mnt_idmap *idmap, (fa->flags & EXT2_FL_USER_MODIFIABLE); ext2_set_inode_flags(inode); - inode->i_ctime = current_time(inode); + inode_set_ctime_current(inode); mark_inode_dirty(inode); return 0; @@ -77,7 +77,7 @@ long ext2_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) } inode_lock(inode); - inode->i_ctime = current_time(inode); + inode_set_ctime_current(inode); inode->i_generation = generation; inode_unlock(inode); diff --git a/fs/ext2/namei.c b/fs/ext2/namei.c index 937dd8f60f96..059517068adc 100644 --- a/fs/ext2/namei.c +++ b/fs/ext2/namei.c @@ -211,7 +211,7 @@ static int ext2_link (struct dentry * old_dentry, struct inode * dir, if (err) return err; - inode->i_ctime = current_time(inode); + inode_set_ctime_current(inode); inode_inc_link_count(inode); ihold(inode); @@ -291,7 +291,7 @@ static int ext2_unlink(struct inode *dir, struct dentry *dentry) if (err) goto out; - inode->i_ctime = dir->i_ctime; + inode_set_ctime_to_ts(inode, inode_get_ctime(dir)); inode_dec_link_count(inode); err = 0; out: @@ -367,7 +367,7 @@ static int ext2_rename (struct mnt_idmap * idmap, ext2_put_page(new_page, new_de); if (err) goto out_dir; - new_inode->i_ctime = current_time(new_inode); + inode_set_ctime_current(new_inode); if (dir_de) drop_nlink(new_inode); inode_dec_link_count(new_inode); @@ -383,7 +383,7 @@ static int ext2_rename (struct mnt_idmap * idmap, * Like most other Unix systems, set the ctime for inodes on a * rename. */ - old_inode->i_ctime = current_time(old_inode); + inode_set_ctime_current(old_inode); mark_inode_dirty(old_inode); err = ext2_delete_entry(old_de, old_page); diff --git a/fs/ext2/super.c b/fs/ext2/super.c index 2959afc7541c..aaf3e3e88cb2 100644 --- a/fs/ext2/super.c +++ b/fs/ext2/super.c @@ -1572,7 +1572,7 @@ out: if (inode->i_size < off+len-towrite) i_size_write(inode, off+len-towrite); inode_inc_iversion(inode); - inode->i_mtime = inode->i_ctime = current_time(inode); + inode->i_mtime = inode_set_ctime_current(inode); mark_inode_dirty(inode); return len - towrite; } diff --git a/fs/ext2/xattr.c b/fs/ext2/xattr.c index 8906ba479aaf..20f741184673 100644 --- a/fs/ext2/xattr.c +++ b/fs/ext2/xattr.c @@ -742,10 +742,13 @@ ext2_xattr_set2(struct inode *inode, struct buffer_head *old_bh, /* We need to allocate a new block */ ext2_fsblk_t goal = ext2_group_first_block_no(sb, EXT2_I(inode)->i_block_group); - int block = ext2_new_block(inode, goal, &error); + unsigned long count = 1; + ext2_fsblk_t block = ext2_new_blocks(inode, goal, + &count, &error, + EXT2_ALLOC_NORESERVE); if (error) goto cleanup; - ea_idebug(inode, "creating block %d", block); + ea_idebug(inode, "creating block %lu", block); new_bh = sb_getblk(sb, block); if (unlikely(!new_bh)) { @@ -773,7 +776,7 @@ ext2_xattr_set2(struct inode *inode, struct buffer_head *old_bh, /* Update the inode. */ EXT2_I(inode)->i_file_acl = new_bh ? new_bh->b_blocknr : 0; - inode->i_ctime = current_time(inode); + inode_set_ctime_current(inode); if (IS_SYNC(inode)) { error = sync_inode_metadata(inode, 1); /* In case sync failed due to ENOSPC the inode was actually diff --git a/fs/ext4/Kconfig b/fs/ext4/Kconfig index 86699c8cab28..e20d59221fc0 100644 --- a/fs/ext4/Kconfig +++ b/fs/ext4/Kconfig @@ -28,6 +28,7 @@ config EXT3_FS_SECURITY config EXT4_FS tristate "The Extended 4 (ext4) filesystem" + select BUFFER_HEAD select JBD2 select CRC16 select CRYPTO diff --git a/fs/ext4/acl.c b/fs/ext4/acl.c index 27fcbddfb148..3bffe862f954 100644 --- a/fs/ext4/acl.c +++ b/fs/ext4/acl.c @@ -259,7 +259,7 @@ retry: error = __ext4_set_acl(handle, inode, type, acl, 0 /* xattr_flags */); if (!error && update_mode) { inode->i_mode = mode; - inode->i_ctime = current_time(inode); + inode_set_ctime_current(inode); error = ext4_mark_inode_dirty(handle, inode); } out_stop: diff --git a/fs/ext4/balloc.c b/fs/ext4/balloc.c index 1f72f977c6db..79b20d6ae39e 100644 --- a/fs/ext4/balloc.c +++ b/fs/ext4/balloc.c @@ -913,11 +913,11 @@ unsigned long ext4_bg_num_gdb(struct super_block *sb, ext4_group_t group) } /* - * This function returns the number of file system metadata clusters at + * This function returns the number of file system metadata blocks at * the beginning of a block group, including the reserved gdt blocks. */ -static unsigned ext4_num_base_meta_clusters(struct super_block *sb, - ext4_group_t block_group) +unsigned int ext4_num_base_meta_blocks(struct super_block *sb, + ext4_group_t block_group) { struct ext4_sb_info *sbi = EXT4_SB(sb); unsigned num; @@ -935,8 +935,15 @@ static unsigned ext4_num_base_meta_clusters(struct super_block *sb, } else { /* For META_BG_BLOCK_GROUPS */ num += ext4_bg_num_gdb_meta(sb, block_group); } - return EXT4_NUM_B2C(sbi, num); + return num; } + +static unsigned int ext4_num_base_meta_clusters(struct super_block *sb, + ext4_group_t block_group) +{ + return EXT4_NUM_B2C(EXT4_SB(sb), ext4_num_base_meta_blocks(sb, block_group)); +} + /** * ext4_inode_to_goal_block - return a hint for block allocation * @inode: inode for block allocation diff --git a/fs/ext4/block_validity.c b/fs/ext4/block_validity.c index 5504f72bbbbe..6fe3c941b565 100644 --- a/fs/ext4/block_validity.c +++ b/fs/ext4/block_validity.c @@ -215,7 +215,6 @@ int ext4_setup_system_zone(struct super_block *sb) struct ext4_system_blocks *system_blks; struct ext4_group_desc *gdp; ext4_group_t i; - int flex_size = ext4_flex_bg_size(sbi); int ret; system_blks = kzalloc(sizeof(*system_blks), GFP_KERNEL); @@ -223,12 +222,13 @@ int ext4_setup_system_zone(struct super_block *sb) return -ENOMEM; for (i=0; i < ngroups; i++) { + unsigned int meta_blks = ext4_num_base_meta_blocks(sb, i); + cond_resched(); - if (ext4_bg_has_super(sb, i) && - ((i < 5) || ((i % flex_size) == 0))) { + if (meta_blks != 0) { ret = add_system_zone(system_blks, ext4_group_first_block_no(sb, i), - ext4_bg_num_gdb(sb, i) + 1, 0); + meta_blks, 0); if (ret) goto err; } diff --git a/fs/ext4/crypto.c b/fs/ext4/crypto.c index e20ac0654b3f..453d4da5de52 100644 --- a/fs/ext4/crypto.c +++ b/fs/ext4/crypto.c @@ -33,6 +33,8 @@ int ext4_fname_setup_filename(struct inode *dir, const struct qstr *iname, #if IS_ENABLED(CONFIG_UNICODE) err = ext4_fname_setup_ci_filename(dir, iname, fname); + if (err) + ext4_fname_free_filename(fname); #endif return err; } @@ -51,6 +53,8 @@ int ext4_fname_prepare_lookup(struct inode *dir, struct dentry *dentry, #if IS_ENABLED(CONFIG_UNICODE) err = ext4_fname_setup_ci_filename(dir, &dentry->d_name, fname); + if (err) + ext4_fname_free_filename(fname); #endif return err; } diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h index 465db8f8c11d..9418359b1d9d 100644 --- a/fs/ext4/ext4.h +++ b/fs/ext4/ext4.h @@ -176,9 +176,6 @@ enum criteria { EXT4_MB_NUM_CRS }; -/* criteria below which we use fast block scanning and avoid unnecessary IO */ -#define CR_FAST CR_GOAL_LEN_SLOW - /* * Flags used in mballoc's allocation_context flags field. * @@ -868,64 +865,70 @@ struct ext4_inode { * affected filesystem before 2242. */ -static inline __le32 ext4_encode_extra_time(struct timespec64 *time) +static inline __le32 ext4_encode_extra_time(struct timespec64 ts) { - u32 extra =((time->tv_sec - (s32)time->tv_sec) >> 32) & EXT4_EPOCH_MASK; - return cpu_to_le32(extra | (time->tv_nsec << EXT4_EPOCH_BITS)); + u32 extra = ((ts.tv_sec - (s32)ts.tv_sec) >> 32) & EXT4_EPOCH_MASK; + return cpu_to_le32(extra | (ts.tv_nsec << EXT4_EPOCH_BITS)); } -static inline void ext4_decode_extra_time(struct timespec64 *time, - __le32 extra) +static inline struct timespec64 ext4_decode_extra_time(__le32 base, + __le32 extra) { + struct timespec64 ts = { .tv_sec = (signed)le32_to_cpu(base) }; + if (unlikely(extra & cpu_to_le32(EXT4_EPOCH_MASK))) - time->tv_sec += (u64)(le32_to_cpu(extra) & EXT4_EPOCH_MASK) << 32; - time->tv_nsec = (le32_to_cpu(extra) & EXT4_NSEC_MASK) >> EXT4_EPOCH_BITS; + ts.tv_sec += (u64)(le32_to_cpu(extra) & EXT4_EPOCH_MASK) << 32; + ts.tv_nsec = (le32_to_cpu(extra) & EXT4_NSEC_MASK) >> EXT4_EPOCH_BITS; + return ts; } -#define EXT4_INODE_SET_XTIME(xtime, inode, raw_inode) \ +#define EXT4_INODE_SET_XTIME_VAL(xtime, inode, raw_inode, ts) \ do { \ - if (EXT4_FITS_IN_INODE(raw_inode, EXT4_I(inode), xtime ## _extra)) {\ - (raw_inode)->xtime = cpu_to_le32((inode)->xtime.tv_sec); \ - (raw_inode)->xtime ## _extra = \ - ext4_encode_extra_time(&(inode)->xtime); \ - } \ - else \ - (raw_inode)->xtime = cpu_to_le32(clamp_t(int32_t, (inode)->xtime.tv_sec, S32_MIN, S32_MAX)); \ + if (EXT4_FITS_IN_INODE(raw_inode, EXT4_I(inode), xtime ## _extra)) { \ + (raw_inode)->xtime = cpu_to_le32((ts).tv_sec); \ + (raw_inode)->xtime ## _extra = ext4_encode_extra_time(ts); \ + } else \ + (raw_inode)->xtime = cpu_to_le32(clamp_t(int32_t, (ts).tv_sec, S32_MIN, S32_MAX)); \ } while (0) -#define EXT4_EINODE_SET_XTIME(xtime, einode, raw_inode) \ -do { \ - if (EXT4_FITS_IN_INODE(raw_inode, einode, xtime)) \ - (raw_inode)->xtime = cpu_to_le32((einode)->xtime.tv_sec); \ - if (EXT4_FITS_IN_INODE(raw_inode, einode, xtime ## _extra)) \ - (raw_inode)->xtime ## _extra = \ - ext4_encode_extra_time(&(einode)->xtime); \ -} while (0) +#define EXT4_INODE_SET_XTIME(xtime, inode, raw_inode) \ + EXT4_INODE_SET_XTIME_VAL(xtime, inode, raw_inode, (inode)->xtime) + +#define EXT4_INODE_SET_CTIME(inode, raw_inode) \ + EXT4_INODE_SET_XTIME_VAL(i_ctime, inode, raw_inode, inode_get_ctime(inode)) + +#define EXT4_EINODE_SET_XTIME(xtime, einode, raw_inode) \ + if (EXT4_FITS_IN_INODE(raw_inode, einode, xtime)) \ + EXT4_INODE_SET_XTIME_VAL(xtime, &((einode)->vfs_inode), \ + raw_inode, (einode)->xtime) + +#define EXT4_INODE_GET_XTIME_VAL(xtime, inode, raw_inode) \ + (EXT4_FITS_IN_INODE(raw_inode, EXT4_I(inode), xtime ## _extra) ? \ + ext4_decode_extra_time((raw_inode)->xtime, \ + (raw_inode)->xtime ## _extra) : \ + (struct timespec64) { \ + .tv_sec = (signed)le32_to_cpu((raw_inode)->xtime) \ + }) #define EXT4_INODE_GET_XTIME(xtime, inode, raw_inode) \ do { \ - (inode)->xtime.tv_sec = (signed)le32_to_cpu((raw_inode)->xtime); \ - if (EXT4_FITS_IN_INODE(raw_inode, EXT4_I(inode), xtime ## _extra)) { \ - ext4_decode_extra_time(&(inode)->xtime, \ - raw_inode->xtime ## _extra); \ - } \ - else \ - (inode)->xtime.tv_nsec = 0; \ + (inode)->xtime = EXT4_INODE_GET_XTIME_VAL(xtime, inode, raw_inode); \ } while (0) +#define EXT4_INODE_GET_CTIME(inode, raw_inode) \ +do { \ + inode_set_ctime_to_ts(inode, \ + EXT4_INODE_GET_XTIME_VAL(i_ctime, inode, raw_inode)); \ +} while (0) -#define EXT4_EINODE_GET_XTIME(xtime, einode, raw_inode) \ -do { \ - if (EXT4_FITS_IN_INODE(raw_inode, einode, xtime)) \ - (einode)->xtime.tv_sec = \ - (signed)le32_to_cpu((raw_inode)->xtime); \ - else \ - (einode)->xtime.tv_sec = 0; \ - if (EXT4_FITS_IN_INODE(raw_inode, einode, xtime ## _extra)) \ - ext4_decode_extra_time(&(einode)->xtime, \ - raw_inode->xtime ## _extra); \ - else \ - (einode)->xtime.tv_nsec = 0; \ +#define EXT4_EINODE_GET_XTIME(xtime, einode, raw_inode) \ +do { \ + if (EXT4_FITS_IN_INODE(raw_inode, einode, xtime)) \ + (einode)->xtime = \ + EXT4_INODE_GET_XTIME_VAL(xtime, &(einode->vfs_inode), \ + raw_inode); \ + else \ + (einode)->xtime = (struct timespec64){0, 0}; \ } while (0) #define i_disk_version osd1.linux1.l_i_version @@ -1235,6 +1238,7 @@ struct ext4_inode_info { #define EXT4_MOUNT2_MB_OPTIMIZE_SCAN 0x00000080 /* Optimize group * scanning in mballoc */ +#define EXT4_MOUNT2_ABORT 0x00000100 /* Abort filesystem */ #define clear_opt(sb, opt) EXT4_SB(sb)->s_mount_opt &= \ ~EXT4_MOUNT_##opt @@ -1252,10 +1256,8 @@ struct ext4_inode_info { #define ext4_test_and_set_bit __test_and_set_bit_le #define ext4_set_bit __set_bit_le -#define ext4_set_bit_atomic ext2_set_bit_atomic #define ext4_test_and_clear_bit __test_and_clear_bit_le #define ext4_clear_bit __clear_bit_le -#define ext4_clear_bit_atomic ext2_clear_bit_atomic #define ext4_test_bit test_bit_le #define ext4_find_next_zero_bit find_next_zero_bit_le #define ext4_find_next_bit find_next_bit_le @@ -1702,10 +1704,13 @@ struct ext4_sb_info { const char *s_last_error_func; time64_t s_last_error_time; /* - * If we are in a context where we cannot update error information in - * the on-disk superblock, we queue this work to do it. + * If we are in a context where we cannot update the on-disk + * superblock, we queue the work here. This is used to update + * the error information in the superblock, and for periodic + * updates of the superblock called from the commit callback + * function. */ - struct work_struct s_error_work; + struct work_struct s_sb_upd_work; /* Ext4 fast commit sub transaction ID */ atomic_t s_fc_subtid; @@ -1798,7 +1803,6 @@ static inline int ext4_valid_inum(struct super_block *sb, unsigned long ino) */ enum { EXT4_MF_MNTDIR_SAMPLED, - EXT4_MF_FS_ABORTED, /* Fatal error detected */ EXT4_MF_FC_INELIGIBLE /* Fast commit ineligible */ }; @@ -2222,9 +2226,9 @@ extern int ext4_feature_set_ok(struct super_block *sb, int readonly); #define EXT4_FLAGS_SHUTDOWN 1 #define EXT4_FLAGS_BDEV_IS_DAX 2 -static inline int ext4_forced_shutdown(struct ext4_sb_info *sbi) +static inline int ext4_forced_shutdown(struct super_block *sb) { - return test_bit(EXT4_FLAGS_SHUTDOWN, &sbi->s_ext4_flags); + return test_bit(EXT4_FLAGS_SHUTDOWN, &EXT4_SB(sb)->s_ext4_flags); } /* @@ -2702,7 +2706,6 @@ extern ext4_fsblk_t ext4_new_meta_blocks(handle_t *handle, struct inode *inode, extern int ext4_claim_free_clusters(struct ext4_sb_info *sbi, s64 nclusters, unsigned int flags); extern ext4_fsblk_t ext4_count_free_clusters(struct super_block *); -extern void ext4_check_blocks_bitmap(struct super_block *); extern struct ext4_group_desc * ext4_get_group_desc(struct super_block * sb, ext4_group_t block_group, struct buffer_head ** bh); @@ -2858,7 +2861,6 @@ extern void ext4_free_inode(handle_t *, struct inode *); extern struct inode * ext4_orphan_get(struct super_block *, unsigned long); extern unsigned long ext4_count_free_inodes(struct super_block *); extern unsigned long ext4_count_dirs(struct super_block *); -extern void ext4_check_inodes_bitmap(struct super_block *); extern void ext4_mark_bitmap_end(int start_bit, int end_bit, char *bitmap); extern int ext4_init_inode_table(struct super_block *sb, ext4_group_t group, int barrier); @@ -2901,7 +2903,6 @@ extern int ext4_mb_init(struct super_block *); extern int ext4_mb_release(struct super_block *); extern ext4_fsblk_t ext4_mb_new_blocks(handle_t *, struct ext4_allocation_request *, int *); -extern int ext4_mb_reserve_blocks(struct super_block *, int); extern void ext4_discard_preallocations(struct inode *, unsigned int); extern int __init ext4_init_mballoc(void); extern void ext4_exit_mballoc(void); @@ -2924,6 +2925,10 @@ extern int ext4_trim_fs(struct super_block *, struct fstrim_range *); extern void ext4_process_freed_data(struct super_block *sb, tid_t commit_tid); extern void ext4_mb_mark_bb(struct super_block *sb, ext4_fsblk_t block, int len, int state); +static inline bool ext4_mb_cr_expensive(enum criteria cr) +{ + return cr >= CR_GOAL_LEN_SLOW; +} /* inode.c */ void ext4_inode_csum_set(struct inode *inode, struct ext4_inode *raw, @@ -2977,7 +2982,6 @@ extern void ext4_evict_inode(struct inode *); extern void ext4_clear_inode(struct inode *); extern int ext4_file_getattr(struct mnt_idmap *, const struct path *, struct kstat *, u32, unsigned int); -extern int ext4_sync_inode(handle_t *, struct inode *); extern void ext4_dirty_inode(struct inode *, int); extern int ext4_change_inode_journal_flag(struct inode *, int); extern int ext4_get_inode_loc(struct inode *, struct ext4_iloc *); @@ -3084,6 +3088,8 @@ extern const char *ext4_decode_error(struct super_block *sb, int errno, extern void ext4_mark_group_bitmap_corrupted(struct super_block *sb, ext4_group_t block_group, unsigned int flags); +extern unsigned int ext4_num_base_meta_blocks(struct super_block *sb, + ext4_group_t block_group); extern __printf(7, 8) void __ext4_error(struct super_block *, const char *, unsigned int, bool, @@ -3525,8 +3531,6 @@ extern loff_t ext4_llseek(struct file *file, loff_t offset, int origin); /* inline.c */ extern int ext4_get_max_inline_size(struct inode *inode); extern int ext4_find_inline_data_nolock(struct inode *inode); -extern int ext4_init_inline_data(handle_t *handle, struct inode *inode, - unsigned int len); extern int ext4_destroy_inline_data(handle_t *handle, struct inode *inode); int ext4_readpage_inline(struct inode *inode, struct folio *folio); diff --git a/fs/ext4/ext4_jbd2.c b/fs/ext4/ext4_jbd2.c index 77f318ec8abb..d1a2e6624401 100644 --- a/fs/ext4/ext4_jbd2.c +++ b/fs/ext4/ext4_jbd2.c @@ -67,11 +67,12 @@ static int ext4_journal_check_start(struct super_block *sb) might_sleep(); - if (unlikely(ext4_forced_shutdown(EXT4_SB(sb)))) + if (unlikely(ext4_forced_shutdown(sb))) return -EIO; - if (sb_rdonly(sb)) + if (WARN_ON_ONCE(sb_rdonly(sb))) return -EROFS; + WARN_ON(sb->s_writers.frozen == SB_FREEZE_COMPLETE); journal = EXT4_SB(sb)->s_journal; /* @@ -234,8 +235,7 @@ int __ext4_journal_get_write_access(const char *where, unsigned int line, might_sleep(); - if (bh->b_bdev->bd_super) - ext4_check_bdev_write_error(bh->b_bdev->bd_super); + ext4_check_bdev_write_error(sb); if (ext4_handle_valid(handle)) { err = jbd2_journal_get_write_access(handle, bh); diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c index e4115d338f10..202c76996b62 100644 --- a/fs/ext4/extents.c +++ b/fs/ext4/extents.c @@ -4476,12 +4476,12 @@ retry: map.m_lblk += ret; map.m_len = len = len - ret; epos = (loff_t)map.m_lblk << inode->i_blkbits; - inode->i_ctime = current_time(inode); + inode_set_ctime_current(inode); if (new_size) { if (epos > new_size) epos = new_size; if (ext4_update_inode_size(inode, epos) & 0x1) - inode->i_mtime = inode->i_ctime; + inode->i_mtime = inode_get_ctime(inode); } ret2 = ext4_mark_inode_dirty(handle, inode); ext4_update_inode_fsync_trans(handle, inode, 1); @@ -4617,7 +4617,7 @@ static long ext4_zero_range(struct file *file, loff_t offset, /* Now release the pages and zero block aligned part of pages */ truncate_pagecache_range(inode, start, end - 1); - inode->i_mtime = inode->i_ctime = current_time(inode); + inode->i_mtime = inode_set_ctime_current(inode); ret = ext4_alloc_file_blocks(file, lblk, max_blocks, new_size, flags); @@ -4642,7 +4642,7 @@ static long ext4_zero_range(struct file *file, loff_t offset, goto out_mutex; } - inode->i_mtime = inode->i_ctime = current_time(inode); + inode->i_mtime = inode_set_ctime_current(inode); if (new_size) ext4_update_inode_size(inode, new_size); ret = ext4_mark_inode_dirty(handle, inode); @@ -5378,7 +5378,7 @@ static int ext4_collapse_range(struct file *file, loff_t offset, loff_t len) up_write(&EXT4_I(inode)->i_data_sem); if (IS_SYNC(inode)) ext4_handle_sync(handle); - inode->i_mtime = inode->i_ctime = current_time(inode); + inode->i_mtime = inode_set_ctime_current(inode); ret = ext4_mark_inode_dirty(handle, inode); ext4_update_inode_fsync_trans(handle, inode, 1); @@ -5488,7 +5488,7 @@ static int ext4_insert_range(struct file *file, loff_t offset, loff_t len) /* Expand file to avoid data loss if there is error while shifting */ inode->i_size += len; EXT4_I(inode)->i_disksize += len; - inode->i_mtime = inode->i_ctime = current_time(inode); + inode->i_mtime = inode_set_ctime_current(inode); ret = ext4_mark_inode_dirty(handle, inode); if (ret) goto out_stop; diff --git a/fs/ext4/extents_status.c b/fs/ext4/extents_status.c index 9b5b8951afb4..6f7de14c0fa8 100644 --- a/fs/ext4/extents_status.c +++ b/fs/ext4/extents_status.c @@ -878,23 +878,29 @@ retry: err1 = __es_remove_extent(inode, lblk, end, NULL, es1); if (err1 != 0) goto error; + /* Free preallocated extent if it didn't get used. */ + if (es1) { + if (!es1->es_len) + __es_free_extent(es1); + es1 = NULL; + } err2 = __es_insert_extent(inode, &newes, es2); if (err2 == -ENOMEM && !ext4_es_must_keep(&newes)) err2 = 0; if (err2 != 0) goto error; + /* Free preallocated extent if it didn't get used. */ + if (es2) { + if (!es2->es_len) + __es_free_extent(es2); + es2 = NULL; + } if (sbi->s_cluster_ratio > 1 && test_opt(inode->i_sb, DELALLOC) && (status & EXTENT_STATUS_WRITTEN || status & EXTENT_STATUS_UNWRITTEN)) __revise_pending(inode, lblk, len); - - /* es is pre-allocated but not used, free it. */ - if (es1 && !es1->es_len) - __es_free_extent(es1); - if (es2 && !es2->es_len) - __es_free_extent(es2); error: write_unlock(&EXT4_I(inode)->i_es_lock); if (err1 || err2) @@ -1491,8 +1497,12 @@ retry: */ write_lock(&EXT4_I(inode)->i_es_lock); err = __es_remove_extent(inode, lblk, end, &reserved, es); - if (es && !es->es_len) - __es_free_extent(es); + /* Free preallocated extent if it didn't get used. */ + if (es) { + if (!es->es_len) + __es_free_extent(es); + es = NULL; + } write_unlock(&EXT4_I(inode)->i_es_lock); if (err) goto retry; @@ -2047,19 +2057,25 @@ retry: err1 = __es_remove_extent(inode, lblk, lblk, NULL, es1); if (err1 != 0) goto error; + /* Free preallocated extent if it didn't get used. */ + if (es1) { + if (!es1->es_len) + __es_free_extent(es1); + es1 = NULL; + } err2 = __es_insert_extent(inode, &newes, es2); if (err2 != 0) goto error; + /* Free preallocated extent if it didn't get used. */ + if (es2) { + if (!es2->es_len) + __es_free_extent(es2); + es2 = NULL; + } if (allocated) __insert_pending(inode, lblk); - - /* es is pre-allocated but not used, free it. */ - if (es1 && !es1->es_len) - __es_free_extent(es1); - if (es2 && !es2->es_len) - __es_free_extent(es2); error: write_unlock(&EXT4_I(inode)->i_es_lock); if (err1 || err2) diff --git a/fs/ext4/file.c b/fs/ext4/file.c index 2dc3f8301225..6830ea3a6c59 100644 --- a/fs/ext4/file.c +++ b/fs/ext4/file.c @@ -131,7 +131,7 @@ static ssize_t ext4_file_read_iter(struct kiocb *iocb, struct iov_iter *to) { struct inode *inode = file_inode(iocb->ki_filp); - if (unlikely(ext4_forced_shutdown(EXT4_SB(inode->i_sb)))) + if (unlikely(ext4_forced_shutdown(inode->i_sb))) return -EIO; if (!iov_iter_count(to)) @@ -153,7 +153,7 @@ static ssize_t ext4_file_splice_read(struct file *in, loff_t *ppos, { struct inode *inode = file_inode(in); - if (unlikely(ext4_forced_shutdown(EXT4_SB(inode->i_sb)))) + if (unlikely(ext4_forced_shutdown(inode->i_sb))) return -EIO; return filemap_splice_read(in, ppos, pipe, len, flags); } @@ -476,6 +476,11 @@ restart: * required to change security info in file_modified(), for extending * I/O, any form of non-overwrite I/O, and unaligned I/O to unwritten * extents (as partial block zeroing may be required). + * + * Note that unaligned writes are allowed under shared lock so long as + * they are pure overwrites. Otherwise, concurrent unaligned writes risk + * data corruption due to partial block zeroing in the dio layer, and so + * the I/O must occur exclusively. */ if (*ilock_shared && ((!IS_NOSEC(inode) || *extend || !overwrite || @@ -492,21 +497,12 @@ restart: /* * Now that locking is settled, determine dio flags and exclusivity - * requirements. Unaligned writes are allowed under shared lock so long - * as they are pure overwrites. Set the iomap overwrite only flag as an - * added precaution in this case. Even though this is unnecessary, we - * can detect and warn on unexpected -EAGAIN if an unsafe unaligned - * write is ever submitted. - * - * Otherwise, concurrent unaligned writes risk data corruption due to - * partial block zeroing in the dio layer, and so the I/O must occur - * exclusively. The inode lock is already held exclusive if the write is - * non-overwrite or extending, so drain all outstanding dio and set the - * force wait dio flag. + * requirements. We don't use DIO_OVERWRITE_ONLY because we enforce + * behavior already. The inode lock is already held exclusive if the + * write is non-overwrite or extending, so drain all outstanding dio and + * set the force wait dio flag. */ - if (*ilock_shared && unaligned_io) { - *dio_flags = IOMAP_DIO_OVERWRITE_ONLY; - } else if (!*ilock_shared && (unaligned_io || *extend)) { + if (!*ilock_shared && (unaligned_io || *extend)) { if (iocb->ki_flags & IOCB_NOWAIT) { ret = -EAGAIN; goto out; @@ -608,7 +604,6 @@ static ssize_t ext4_dio_write_iter(struct kiocb *iocb, struct iov_iter *from) iomap_ops = &ext4_iomap_overwrite_ops; ret = iomap_dio_rw(iocb, from, iomap_ops, &ext4_dio_write_ops, dio_flags, NULL, 0); - WARN_ON_ONCE(ret == -EAGAIN && !(iocb->ki_flags & IOCB_NOWAIT)); if (ret == -ENOTBLK) ret = 0; @@ -709,7 +704,7 @@ ext4_file_write_iter(struct kiocb *iocb, struct iov_iter *from) { struct inode *inode = file_inode(iocb->ki_filp); - if (unlikely(ext4_forced_shutdown(EXT4_SB(inode->i_sb)))) + if (unlikely(ext4_forced_shutdown(inode->i_sb))) return -EIO; #ifdef CONFIG_FS_DAX @@ -806,10 +801,9 @@ static const struct vm_operations_struct ext4_file_vm_ops = { static int ext4_file_mmap(struct file *file, struct vm_area_struct *vma) { struct inode *inode = file->f_mapping->host; - struct ext4_sb_info *sbi = EXT4_SB(inode->i_sb); - struct dax_device *dax_dev = sbi->s_daxdev; + struct dax_device *dax_dev = EXT4_SB(inode->i_sb)->s_daxdev; - if (unlikely(ext4_forced_shutdown(sbi))) + if (unlikely(ext4_forced_shutdown(inode->i_sb))) return -EIO; /* @@ -885,7 +879,7 @@ static int ext4_file_open(struct inode *inode, struct file *filp) { int ret; - if (unlikely(ext4_forced_shutdown(EXT4_SB(inode->i_sb)))) + if (unlikely(ext4_forced_shutdown(inode->i_sb))) return -EIO; ret = ext4_sample_last_mounted(inode->i_sb, filp->f_path.mnt); diff --git a/fs/ext4/fsync.c b/fs/ext4/fsync.c index 0c56f3a011a1..b40d3b29f7e5 100644 --- a/fs/ext4/fsync.c +++ b/fs/ext4/fsync.c @@ -131,9 +131,8 @@ int ext4_sync_file(struct file *file, loff_t start, loff_t end, int datasync) int ret = 0, err; bool needs_barrier = false; struct inode *inode = file->f_mapping->host; - struct ext4_sb_info *sbi = EXT4_SB(inode->i_sb); - if (unlikely(ext4_forced_shutdown(sbi))) + if (unlikely(ext4_forced_shutdown(inode->i_sb))) return -EIO; ASSERT(ext4_journal_current_handle() == NULL); @@ -141,14 +140,14 @@ int ext4_sync_file(struct file *file, loff_t start, loff_t end, int datasync) trace_ext4_sync_file_enter(file, datasync); if (sb_rdonly(inode->i_sb)) { - /* Make sure that we read updated s_mount_flags value */ + /* Make sure that we read updated s_ext4_flags value */ smp_rmb(); - if (ext4_test_mount_flag(inode->i_sb, EXT4_MF_FS_ABORTED)) + if (ext4_forced_shutdown(inode->i_sb)) ret = -EROFS; goto out; } - if (!sbi->s_journal) { + if (!EXT4_SB(inode->i_sb)->s_journal) { ret = ext4_fsync_nojournal(file, start, end, datasync, &needs_barrier); if (needs_barrier) diff --git a/fs/ext4/hash.c b/fs/ext4/hash.c index 46c3423ddfa1..deabe29da7fb 100644 --- a/fs/ext4/hash.c +++ b/fs/ext4/hash.c @@ -300,7 +300,7 @@ int ext4fs_dirhash(const struct inode *dir, const char *name, int len, unsigned char *buff; struct qstr qstr = {.name = name, .len = len }; - if (len && IS_CASEFOLDED(dir) && um && + if (len && IS_CASEFOLDED(dir) && (!IS_ENCRYPTED(dir) || fscrypt_has_encryption_key(dir))) { buff = kzalloc(sizeof(char) * PATH_MAX, GFP_KERNEL); if (!buff) diff --git a/fs/ext4/ialloc.c b/fs/ext4/ialloc.c index 754f961cd9fd..b65058d972f9 100644 --- a/fs/ext4/ialloc.c +++ b/fs/ext4/ialloc.c @@ -950,7 +950,7 @@ struct inode *__ext4_new_inode(struct mnt_idmap *idmap, sb = dir->i_sb; sbi = EXT4_SB(sb); - if (unlikely(ext4_forced_shutdown(sbi))) + if (unlikely(ext4_forced_shutdown(sb))) return ERR_PTR(-EIO); ngroups = ext4_get_groups_count(sb); @@ -1250,7 +1250,7 @@ got: inode->i_ino = ino + group * EXT4_INODES_PER_GROUP(sb); /* This is the optimal IO size (for stat), not the fs block size */ inode->i_blocks = 0; - inode->i_mtime = inode->i_atime = inode->i_ctime = current_time(inode); + inode->i_mtime = inode->i_atime = inode_set_ctime_current(inode); ei->i_crtime = inode->i_mtime; memset(ei->i_data, 0, sizeof(ei->i_data)); @@ -1523,12 +1523,6 @@ int ext4_init_inode_table(struct super_block *sb, ext4_group_t group, int num, ret = 0, used_blks = 0; unsigned long used_inos = 0; - /* This should not happen, but just to be sure check this */ - if (sb_rdonly(sb)) { - ret = 1; - goto out; - } - gdp = ext4_get_group_desc(sb, group, &group_desc_bh); if (!gdp || !grp) goto out; diff --git a/fs/ext4/inline.c b/fs/ext4/inline.c index a4b7e4bc32d4..012d9259ff53 100644 --- a/fs/ext4/inline.c +++ b/fs/ext4/inline.c @@ -228,7 +228,7 @@ static void ext4_write_inline_data(struct inode *inode, struct ext4_iloc *iloc, struct ext4_inode *raw_inode; int cp_len = 0; - if (unlikely(ext4_forced_shutdown(EXT4_SB(inode->i_sb)))) + if (unlikely(ext4_forced_shutdown(inode->i_sb))) return; BUG_ON(!EXT4_I(inode)->i_inline_off); @@ -1037,7 +1037,7 @@ static int ext4_add_dirent_to_inline(handle_t *handle, * happen is that the times are slightly out of date * and/or different from the directory change time. */ - dir->i_mtime = dir->i_ctime = current_time(dir); + dir->i_mtime = inode_set_ctime_current(dir); ext4_update_dx_flag(dir); inode_inc_iversion(dir); return 1; @@ -1991,7 +1991,7 @@ out: ext4_orphan_del(handle, inode); if (err == 0) { - inode->i_mtime = inode->i_ctime = current_time(inode); + inode->i_mtime = inode_set_ctime_current(inode); err = ext4_mark_inode_dirty(handle, inode); if (IS_SYNC(inode)) ext4_handle_sync(handle); diff --git a/fs/ext4/inode-test.c b/fs/ext4/inode-test.c index 7935ea6cf92c..f0c0fd507fbc 100644 --- a/fs/ext4/inode-test.c +++ b/fs/ext4/inode-test.c @@ -245,9 +245,9 @@ static void inode_test_xtimestamp_decoding(struct kunit *test) struct timestamp_expectation *test_param = (struct timestamp_expectation *)(test->param_value); - timestamp.tv_sec = get_32bit_time(test_param); - ext4_decode_extra_time(×tamp, - cpu_to_le32(test_param->extra_bits)); + timestamp = ext4_decode_extra_time( + cpu_to_le32(get_32bit_time(test_param)), + cpu_to_le32(test_param->extra_bits)); KUNIT_EXPECT_EQ_MSG(test, test_param->expected.tv_sec, diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c index 3d253e250871..4ce35f1c8b0a 100644 --- a/fs/ext4/inode.c +++ b/fs/ext4/inode.c @@ -1114,7 +1114,7 @@ static int ext4_write_begin(struct file *file, struct address_space *mapping, pgoff_t index; unsigned from, to; - if (unlikely(ext4_forced_shutdown(EXT4_SB(inode->i_sb)))) + if (unlikely(ext4_forced_shutdown(inode->i_sb))) return -EIO; trace_ext4_write_begin(inode, pos, len); @@ -2213,8 +2213,7 @@ static int mpage_map_and_submit_extent(handle_t *handle, if (err < 0) { struct super_block *sb = inode->i_sb; - if (ext4_forced_shutdown(EXT4_SB(sb)) || - ext4_test_mount_flag(sb, EXT4_MF_FS_ABORTED)) + if (ext4_forced_shutdown(sb)) goto invalidate_dirty_pages; /* * Let the uper layers retry transient errors. @@ -2534,14 +2533,13 @@ static int ext4_do_writepages(struct mpage_da_data *mpd) * If the filesystem has aborted, it is read-only, so return * right away instead of dumping stack traces later on that * will obscure the real source of the problem. We test - * EXT4_MF_FS_ABORTED instead of sb->s_flag's SB_RDONLY because + * fs shutdown state instead of sb->s_flag's SB_RDONLY because * the latter could be true if the filesystem is mounted * read-only, and in that case, ext4_writepages should * *never* be called, so if that ever happens, we would want * the stack trace. */ - if (unlikely(ext4_forced_shutdown(EXT4_SB(mapping->host->i_sb)) || - ext4_test_mount_flag(inode->i_sb, EXT4_MF_FS_ABORTED))) { + if (unlikely(ext4_forced_shutdown(mapping->host->i_sb))) { ret = -EROFS; goto out_writepages; } @@ -2759,7 +2757,7 @@ static int ext4_writepages(struct address_space *mapping, int ret; int alloc_ctx; - if (unlikely(ext4_forced_shutdown(EXT4_SB(sb)))) + if (unlikely(ext4_forced_shutdown(sb))) return -EIO; alloc_ctx = ext4_writepages_down_read(sb); @@ -2798,16 +2796,16 @@ static int ext4_dax_writepages(struct address_space *mapping, int ret; long nr_to_write = wbc->nr_to_write; struct inode *inode = mapping->host; - struct ext4_sb_info *sbi = EXT4_SB(mapping->host->i_sb); int alloc_ctx; - if (unlikely(ext4_forced_shutdown(EXT4_SB(inode->i_sb)))) + if (unlikely(ext4_forced_shutdown(inode->i_sb))) return -EIO; alloc_ctx = ext4_writepages_down_read(inode->i_sb); trace_ext4_writepages(inode, wbc); - ret = dax_writeback_mapping_range(mapping, sbi->s_daxdev, wbc); + ret = dax_writeback_mapping_range(mapping, + EXT4_SB(inode->i_sb)->s_daxdev, wbc); trace_ext4_writepages_result(inode, wbc, ret, nr_to_write - wbc->nr_to_write); ext4_writepages_up_read(inode->i_sb, alloc_ctx); @@ -2857,7 +2855,7 @@ static int ext4_da_write_begin(struct file *file, struct address_space *mapping, pgoff_t index; struct inode *inode = mapping->host; - if (unlikely(ext4_forced_shutdown(EXT4_SB(inode->i_sb)))) + if (unlikely(ext4_forced_shutdown(inode->i_sb))) return -EIO; index = pos >> PAGE_SHIFT; @@ -2937,14 +2935,73 @@ static int ext4_da_should_update_i_disksize(struct folio *folio, return 1; } +static int ext4_da_do_write_end(struct address_space *mapping, + loff_t pos, unsigned len, unsigned copied, + struct page *page) +{ + struct inode *inode = mapping->host; + loff_t old_size = inode->i_size; + bool disksize_changed = false; + loff_t new_i_size; + + /* + * block_write_end() will mark the inode as dirty with I_DIRTY_PAGES + * flag, which all that's needed to trigger page writeback. + */ + copied = block_write_end(NULL, mapping, pos, len, copied, page, NULL); + new_i_size = pos + copied; + + /* + * It's important to update i_size while still holding page lock, + * because page writeout could otherwise come in and zero beyond + * i_size. + * + * Since we are holding inode lock, we are sure i_disksize <= + * i_size. We also know that if i_disksize < i_size, there are + * delalloc writes pending in the range up to i_size. If the end of + * the current write is <= i_size, there's no need to touch + * i_disksize since writeback will push i_disksize up to i_size + * eventually. If the end of the current write is > i_size and + * inside an allocated block which ext4_da_should_update_i_disksize() + * checked, we need to update i_disksize here as certain + * ext4_writepages() paths not allocating blocks and update i_disksize. + */ + if (new_i_size > inode->i_size) { + unsigned long end; + + i_size_write(inode, new_i_size); + end = (new_i_size - 1) & (PAGE_SIZE - 1); + if (copied && ext4_da_should_update_i_disksize(page_folio(page), end)) { + ext4_update_i_disksize(inode, new_i_size); + disksize_changed = true; + } + } + + unlock_page(page); + put_page(page); + + if (old_size < pos) + pagecache_isize_extended(inode, old_size, pos); + + if (disksize_changed) { + handle_t *handle; + + handle = ext4_journal_start(inode, EXT4_HT_INODE, 2); + if (IS_ERR(handle)) + return PTR_ERR(handle); + ext4_mark_inode_dirty(handle, inode); + ext4_journal_stop(handle); + } + + return copied; +} + static int ext4_da_write_end(struct file *file, struct address_space *mapping, loff_t pos, unsigned len, unsigned copied, struct page *page, void *fsdata) { struct inode *inode = mapping->host; - loff_t new_i_size; - unsigned long start, end; int write_mode = (int)(unsigned long)fsdata; struct folio *folio = page_folio(page); @@ -2963,30 +3020,7 @@ static int ext4_da_write_end(struct file *file, if (unlikely(copied < len) && !PageUptodate(page)) copied = 0; - start = pos & (PAGE_SIZE - 1); - end = start + copied - 1; - - /* - * Since we are holding inode lock, we are sure i_disksize <= - * i_size. We also know that if i_disksize < i_size, there are - * delalloc writes pending in the range upto i_size. If the end of - * the current write is <= i_size, there's no need to touch - * i_disksize since writeback will push i_disksize upto i_size - * eventually. If the end of the current write is > i_size and - * inside an allocated block (ext4_da_should_update_i_disksize() - * check), we need to update i_disksize here as certain - * ext4_writepages() paths not allocating blocks update i_disksize. - * - * Note that we defer inode dirtying to generic_write_end() / - * ext4_da_write_inline_data_end(). - */ - new_i_size = pos + copied; - if (copied && new_i_size > inode->i_size && - ext4_da_should_update_i_disksize(folio, end)) - ext4_update_i_disksize(inode, new_i_size); - - return generic_write_end(file, mapping, pos, len, copied, &folio->page, - fsdata); + return ext4_da_do_write_end(mapping, pos, len, copied, &folio->page); } /* @@ -3986,7 +4020,7 @@ int ext4_punch_hole(struct file *file, loff_t offset, loff_t length) if (IS_SYNC(inode)) ext4_handle_sync(handle); - inode->i_mtime = inode->i_ctime = current_time(inode); + inode->i_mtime = inode_set_ctime_current(inode); ret2 = ext4_mark_inode_dirty(handle, inode); if (unlikely(ret2)) ret = ret2; @@ -4146,7 +4180,7 @@ out_stop: if (inode->i_nlink) ext4_orphan_del(handle, inode); - inode->i_mtime = inode->i_ctime = current_time(inode); + inode->i_mtime = inode_set_ctime_current(inode); err2 = ext4_mark_inode_dirty(handle, inode); if (unlikely(err2 && !err)) err = err2; @@ -4249,7 +4283,7 @@ static int ext4_fill_raw_inode(struct inode *inode, struct ext4_inode *raw_inode } raw_inode->i_links_count = cpu_to_le16(inode->i_nlink); - EXT4_INODE_SET_XTIME(i_ctime, inode, raw_inode); + EXT4_INODE_SET_CTIME(inode, raw_inode); EXT4_INODE_SET_XTIME(i_mtime, inode, raw_inode); EXT4_INODE_SET_XTIME(i_atime, inode, raw_inode); EXT4_EINODE_SET_XTIME(i_crtime, ei, raw_inode); @@ -4858,7 +4892,7 @@ struct inode *__ext4_iget(struct super_block *sb, unsigned long ino, } } - EXT4_INODE_GET_XTIME(i_ctime, inode, raw_inode); + EXT4_INODE_GET_CTIME(inode, raw_inode); EXT4_INODE_GET_XTIME(i_mtime, inode, raw_inode); EXT4_INODE_GET_XTIME(i_atime, inode, raw_inode); EXT4_EINODE_GET_XTIME(i_crtime, ei, raw_inode); @@ -4940,9 +4974,12 @@ struct inode *__ext4_iget(struct super_block *sb, unsigned long ino, "iget: bogus i_mode (%o)", inode->i_mode); goto bad_inode; } - if (IS_CASEFOLDED(inode) && !ext4_has_feature_casefold(inode->i_sb)) + if (IS_CASEFOLDED(inode) && !ext4_has_feature_casefold(inode->i_sb)) { ext4_error_inode(inode, function, line, 0, "casefold flag without casefold feature"); + ret = -EFSCORRUPTED; + goto bad_inode; + } if ((err_str = check_igot_inode(inode, flags)) != NULL) { ext4_error_inode(inode, function, line, 0, err_str); ret = -EFSCORRUPTED; @@ -4981,7 +5018,7 @@ static void __ext4_update_other_inode_time(struct super_block *sb, spin_unlock(&inode->i_lock); spin_lock(&ei->i_raw_lock); - EXT4_INODE_SET_XTIME(i_ctime, inode, raw_inode); + EXT4_INODE_SET_CTIME(inode, raw_inode); EXT4_INODE_SET_XTIME(i_mtime, inode, raw_inode); EXT4_INODE_SET_XTIME(i_atime, inode, raw_inode); ext4_inode_csum_set(inode, raw_inode, ei); @@ -5131,11 +5168,10 @@ int ext4_write_inode(struct inode *inode, struct writeback_control *wbc) { int err; - if (WARN_ON_ONCE(current->flags & PF_MEMALLOC) || - sb_rdonly(inode->i_sb)) + if (WARN_ON_ONCE(current->flags & PF_MEMALLOC)) return 0; - if (unlikely(ext4_forced_shutdown(EXT4_SB(inode->i_sb)))) + if (unlikely(ext4_forced_shutdown(inode->i_sb))) return -EIO; if (EXT4_SB(inode->i_sb)->s_journal) { @@ -5255,7 +5291,7 @@ int ext4_setattr(struct mnt_idmap *idmap, struct dentry *dentry, const unsigned int ia_valid = attr->ia_valid; bool inc_ivers = true; - if (unlikely(ext4_forced_shutdown(EXT4_SB(inode->i_sb)))) + if (unlikely(ext4_forced_shutdown(inode->i_sb))) return -EIO; if (unlikely(IS_IMMUTABLE(inode))) @@ -5376,10 +5412,8 @@ int ext4_setattr(struct mnt_idmap *idmap, struct dentry *dentry, * Update c/mtime on truncate up, ext4_truncate() will * update c/mtime in shrink case below */ - if (!shrink) { - inode->i_mtime = current_time(inode); - inode->i_ctime = inode->i_mtime; - } + if (!shrink) + inode->i_mtime = inode_set_ctime_current(inode); if (shrink) ext4_fc_track_range(handle, inode, @@ -5537,7 +5571,7 @@ int ext4_getattr(struct mnt_idmap *idmap, const struct path *path, STATX_ATTR_NODUMP | STATX_ATTR_VERITY); - generic_fillattr(idmap, inode, stat); + generic_fillattr(idmap, request_mask, inode, stat); return 0; } @@ -5676,7 +5710,7 @@ int ext4_mark_iloc_dirty(handle_t *handle, { int err = 0; - if (unlikely(ext4_forced_shutdown(EXT4_SB(inode->i_sb)))) { + if (unlikely(ext4_forced_shutdown(inode->i_sb))) { put_bh(iloc->bh); return -EIO; } @@ -5702,7 +5736,7 @@ ext4_reserve_inode_write(handle_t *handle, struct inode *inode, { int err; - if (unlikely(ext4_forced_shutdown(EXT4_SB(inode->i_sb)))) + if (unlikely(ext4_forced_shutdown(inode->i_sb))) return -EIO; err = ext4_get_inode_loc(inode, iloc); @@ -6140,7 +6174,7 @@ retry_alloc: if (err == -ENOSPC && ext4_should_retry_alloc(inode->i_sb, &retries)) goto retry_alloc; out_ret: - ret = block_page_mkwrite_return(err); + ret = vmf_fs_error(err); out: filemap_invalidate_unlock_shared(mapping); sb_end_pagefault(inode->i_sb); diff --git a/fs/ext4/ioctl.c b/fs/ext4/ioctl.c index 331859511f80..0bfe2ce589e2 100644 --- a/fs/ext4/ioctl.c +++ b/fs/ext4/ioctl.c @@ -449,7 +449,8 @@ static long swap_inode_boot_loader(struct super_block *sb, diff = size - size_bl; swap_inode_data(inode, inode_bl); - inode->i_ctime = inode_bl->i_ctime = current_time(inode); + inode_set_ctime_current(inode); + inode_set_ctime_current(inode_bl); inode_inc_iversion(inode); inode->i_generation = get_random_u32(); @@ -663,7 +664,7 @@ static int ext4_ioctl_setflags(struct inode *inode, ext4_set_inode_flags(inode, false); - inode->i_ctime = current_time(inode); + inode_set_ctime_current(inode); inode_inc_iversion(inode); err = ext4_mark_iloc_dirty(handle, inode, &iloc); @@ -774,7 +775,7 @@ static int ext4_ioctl_setproject(struct inode *inode, __u32 projid) } EXT4_I(inode)->i_projid = kprojid; - inode->i_ctime = current_time(inode); + inode_set_ctime_current(inode); inode_inc_iversion(inode); out_dirty: rc = ext4_mark_iloc_dirty(handle, inode, &iloc); @@ -801,7 +802,7 @@ int ext4_force_shutdown(struct super_block *sb, u32 flags) if (flags > EXT4_GOING_FLAGS_NOLOGFLUSH) return -EINVAL; - if (ext4_forced_shutdown(sbi)) + if (ext4_forced_shutdown(sb)) return 0; ext4_msg(sb, KERN_ALERT, "shut down requested (%d)", flags); @@ -1266,7 +1267,7 @@ static long __ext4_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) } err = ext4_reserve_inode_write(handle, inode, &iloc); if (err == 0) { - inode->i_ctime = current_time(inode); + inode_set_ctime_current(inode); inode_inc_iversion(inode); inode->i_generation = generation; err = ext4_mark_iloc_dirty(handle, inode, &iloc); diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c index 21b903fe546e..c91db9f57524 100644 --- a/fs/ext4/mballoc.c +++ b/fs/ext4/mballoc.c @@ -874,7 +874,7 @@ static void ext4_mb_choose_next_group_p2_aligned(struct ext4_allocation_context enum criteria *new_cr, ext4_group_t *group, ext4_group_t ngroups) { struct ext4_sb_info *sbi = EXT4_SB(ac->ac_sb); - struct ext4_group_info *iter, *grp; + struct ext4_group_info *iter; int i; if (ac->ac_status == AC_STATUS_FOUND) @@ -883,7 +883,6 @@ static void ext4_mb_choose_next_group_p2_aligned(struct ext4_allocation_context if (unlikely(sbi->s_mb_stats && ac->ac_flags & EXT4_MB_CR_POWER2_ALIGNED_OPTIMIZED)) atomic_inc(&sbi->s_bal_p2_aligned_bad_suggestions); - grp = NULL; for (i = ac->ac_2order; i < MB_NUM_ORDERS(ac->ac_sb); i++) { if (list_empty(&sbi->s_mb_largest_free_orders[i])) continue; @@ -892,28 +891,22 @@ static void ext4_mb_choose_next_group_p2_aligned(struct ext4_allocation_context read_unlock(&sbi->s_mb_largest_free_orders_locks[i]); continue; } - grp = NULL; list_for_each_entry(iter, &sbi->s_mb_largest_free_orders[i], bb_largest_free_order_node) { if (sbi->s_mb_stats) atomic64_inc(&sbi->s_bal_cX_groups_considered[CR_POWER2_ALIGNED]); if (likely(ext4_mb_good_group(ac, iter->bb_group, CR_POWER2_ALIGNED))) { - grp = iter; - break; + *group = iter->bb_group; + ac->ac_flags |= EXT4_MB_CR_POWER2_ALIGNED_OPTIMIZED; + read_unlock(&sbi->s_mb_largest_free_orders_locks[i]); + return; } } read_unlock(&sbi->s_mb_largest_free_orders_locks[i]); - if (grp) - break; } - if (!grp) { - /* Increment cr and search again */ - *new_cr = CR_GOAL_LEN_FAST; - } else { - *group = grp->bb_group; - ac->ac_flags |= EXT4_MB_CR_POWER2_ALIGNED_OPTIMIZED; - } + /* Increment cr and search again if no group is found */ + *new_cr = CR_GOAL_LEN_FAST; } /* @@ -966,16 +959,25 @@ static void ext4_mb_choose_next_group_goal_fast(struct ext4_allocation_context * for (i = mb_avg_fragment_size_order(ac->ac_sb, ac->ac_g_ex.fe_len); i < MB_NUM_ORDERS(ac->ac_sb); i++) { grp = ext4_mb_find_good_group_avg_frag_lists(ac, i); - if (grp) - break; + if (grp) { + *group = grp->bb_group; + ac->ac_flags |= EXT4_MB_CR_GOAL_LEN_FAST_OPTIMIZED; + return; + } } - if (grp) { - *group = grp->bb_group; - ac->ac_flags |= EXT4_MB_CR_GOAL_LEN_FAST_OPTIMIZED; - } else { + /* + * CR_BEST_AVAIL_LEN works based on the concept that we have + * a larger normalized goal len request which can be trimmed to + * a smaller goal len such that it can still satisfy original + * request len. However, allocation request for non-regular + * files never gets normalized. + * See function ext4_mb_normalize_request() (EXT4_MB_HINT_DATA). + */ + if (ac->ac_flags & EXT4_MB_HINT_DATA) *new_cr = CR_BEST_AVAIL_LEN; - } + else + *new_cr = CR_GOAL_LEN_SLOW; } /* @@ -1051,18 +1053,16 @@ static void ext4_mb_choose_next_group_best_avail(struct ext4_allocation_context ac->ac_g_ex.fe_len); grp = ext4_mb_find_good_group_avg_frag_lists(ac, frag_order); - if (grp) - break; + if (grp) { + *group = grp->bb_group; + ac->ac_flags |= EXT4_MB_CR_BEST_AVAIL_LEN_OPTIMIZED; + return; + } } - if (grp) { - *group = grp->bb_group; - ac->ac_flags |= EXT4_MB_CR_BEST_AVAIL_LEN_OPTIMIZED; - } else { - /* Reset goal length to original goal length before falling into CR_GOAL_LEN_SLOW */ - ac->ac_g_ex.fe_len = ac->ac_orig_goal_len; - *new_cr = CR_GOAL_LEN_SLOW; - } + /* Reset goal length to original goal length before falling into CR_GOAL_LEN_SLOW */ + ac->ac_g_ex.fe_len = ac->ac_orig_goal_len; + *new_cr = CR_GOAL_LEN_SLOW; } static inline int should_optimize_scan(struct ext4_allocation_context *ac) @@ -1080,8 +1080,9 @@ static inline int should_optimize_scan(struct ext4_allocation_context *ac) * Return next linear group for allocation. If linear traversal should not be * performed, this function just returns the same group */ -static int -next_linear_group(struct ext4_allocation_context *ac, int group, int ngroups) +static ext4_group_t +next_linear_group(struct ext4_allocation_context *ac, ext4_group_t group, + ext4_group_t ngroups) { if (!should_optimize_scan(ac)) goto inc_and_return; @@ -1255,7 +1256,7 @@ void ext4_mb_generate_buddy(struct super_block *sb, static int ext4_mb_init_cache(struct page *page, char *incore, gfp_t gfp) { ext4_group_t ngroups; - int blocksize; + unsigned int blocksize; int blocks_per_page; int groups_per_page; int err = 0; @@ -2450,7 +2451,7 @@ void ext4_mb_complex_scan_group(struct ext4_allocation_context *ac, break; } - if (ac->ac_criteria < CR_FAST) { + if (!ext4_mb_cr_expensive(ac->ac_criteria)) { /* * In CR_GOAL_LEN_FAST and CR_BEST_AVAIL_LEN, we are * sure that this group will have a large enough @@ -2553,7 +2554,7 @@ static bool ext4_mb_good_group(struct ext4_allocation_context *ac, BUG_ON(cr < CR_POWER2_ALIGNED || cr >= EXT4_MB_NUM_CRS); - if (unlikely(EXT4_MB_GRP_BBITMAP_CORRUPT(grp) || !grp)) + if (unlikely(!grp || EXT4_MB_GRP_BBITMAP_CORRUPT(grp))) return false; free = grp->bb_free; @@ -2634,7 +2635,12 @@ static int ext4_mb_good_group_nolock(struct ext4_allocation_context *ac, free = grp->bb_free; if (free == 0) goto out; - if (cr <= CR_FAST && free < ac->ac_g_ex.fe_len) + /* + * In all criterias except CR_ANY_FREE we try to avoid groups that + * can't possibly satisfy the full goal request due to insufficient + * free blocks. + */ + if (cr < CR_ANY_FREE && free < ac->ac_g_ex.fe_len) goto out; if (unlikely(EXT4_MB_GRP_BBITMAP_CORRUPT(grp))) goto out; @@ -2658,7 +2664,7 @@ static int ext4_mb_good_group_nolock(struct ext4_allocation_context *ac, * sure we locate metadata blocks in the first block group in * the flex_bg if possible. */ - if (cr < CR_FAST && + if (!ext4_mb_cr_expensive(cr) && (!sbi->s_log_groups_per_flex || ((group & ((1 << sbi->s_log_groups_per_flex) - 1)) != 0)) && !(ext4_has_group_desc_csum(sb) && @@ -2787,8 +2793,8 @@ ext4_mb_regular_allocator(struct ext4_allocation_context *ac) /* * ac->ac_2order is set only if the fe_len is a power of 2 - * if ac->ac_2order is set we also set criteria to 0 so that we - * try exact allocation using buddy. + * if ac->ac_2order is set we also set criteria to CR_POWER2_ALIGNED + * so that we try exact allocation using buddy. */ i = fls(ac->ac_g_ex.fe_len); ac->ac_2order = 0; @@ -2800,10 +2806,7 @@ ext4_mb_regular_allocator(struct ext4_allocation_context *ac) * requests upto maximum buddy size we have constructed. */ if (i >= sbi->s_mb_order2_reqs && i <= MB_NUM_ORDERS(sb)) { - /* - * This should tell if fe_len is exactly power of 2 - */ - if ((ac->ac_g_ex.fe_len & (~(1 << (i - 1)))) == 0) + if (is_power_of_2(ac->ac_g_ex.fe_len)) ac->ac_2order = array_index_nospec(i - 1, MB_NUM_ORDERS(sb)); } @@ -2848,11 +2851,11 @@ repeat: /* * Batch reads of the block allocation bitmaps * to get multiple READs in flight; limit - * prefetching at cr=0/1, otherwise mballoc can - * spend a lot of time loading imperfect groups + * prefetching at inexpensive CR, otherwise mballoc + * can spend a lot of time loading imperfect groups */ if ((prefetch_grp == group) && - (cr >= CR_FAST || + (ext4_mb_cr_expensive(cr) || prefetch_ios < sbi->s_mb_prefetch_limit)) { nr = sbi->s_mb_prefetch; if (ext4_has_feature_flex_bg(sb)) { @@ -3501,11 +3504,10 @@ static void ext4_discard_work(struct work_struct *work) struct super_block *sb = sbi->s_sb; struct ext4_free_data *fd, *nfd; struct ext4_buddy e4b; - struct list_head discard_list; + LIST_HEAD(discard_list); ext4_group_t grp, load_grp; int err = 0; - INIT_LIST_HEAD(&discard_list); spin_lock(&sbi->s_md_lock); list_splice_init(&sbi->s_discard_list, &discard_list); spin_unlock(&sbi->s_md_lock); @@ -3879,12 +3881,10 @@ void ext4_process_freed_data(struct super_block *sb, tid_t commit_tid) { struct ext4_sb_info *sbi = EXT4_SB(sb); struct ext4_free_data *entry, *tmp; - struct list_head freed_data_list; + LIST_HEAD(freed_data_list); struct list_head *cut_pos = NULL; bool wake; - INIT_LIST_HEAD(&freed_data_list); - spin_lock(&sbi->s_md_lock); list_for_each_entry(entry, &sbi->s_freed_data_list, efd_list) { if (entry->efd_tid != commit_tid) @@ -4084,7 +4084,7 @@ void ext4_mb_mark_bb(struct super_block *sb, ext4_fsblk_t block, struct ext4_sb_info *sbi = EXT4_SB(sb); ext4_group_t group; ext4_grpblk_t blkoff; - int i, err; + int i, err = 0; int already; unsigned int clen, clen_changed, thisgrp_len; @@ -4222,12 +4222,13 @@ ext4_mb_pa_rb_next_iter(ext4_lblk_t new_start, ext4_lblk_t cur_start, struct rb_ static inline void ext4_mb_pa_assert_overlap(struct ext4_allocation_context *ac, - ext4_lblk_t start, ext4_lblk_t end) + ext4_lblk_t start, loff_t end) { struct ext4_sb_info *sbi = EXT4_SB(ac->ac_sb); struct ext4_inode_info *ei = EXT4_I(ac->ac_inode); struct ext4_prealloc_space *tmp_pa; - ext4_lblk_t tmp_pa_start, tmp_pa_end; + ext4_lblk_t tmp_pa_start; + loff_t tmp_pa_end; struct rb_node *iter; read_lock(&ei->i_prealloc_lock); @@ -4236,7 +4237,7 @@ ext4_mb_pa_assert_overlap(struct ext4_allocation_context *ac, tmp_pa = rb_entry(iter, struct ext4_prealloc_space, pa_node.inode_node); tmp_pa_start = tmp_pa->pa_lstart; - tmp_pa_end = tmp_pa->pa_lstart + EXT4_C2B(sbi, tmp_pa->pa_len); + tmp_pa_end = pa_logical_end(sbi, tmp_pa); spin_lock(&tmp_pa->pa_lock); if (tmp_pa->pa_deleted == 0) @@ -4258,14 +4259,14 @@ ext4_mb_pa_assert_overlap(struct ext4_allocation_context *ac, */ static inline void ext4_mb_pa_adjust_overlap(struct ext4_allocation_context *ac, - ext4_lblk_t *start, ext4_lblk_t *end) + ext4_lblk_t *start, loff_t *end) { struct ext4_inode_info *ei = EXT4_I(ac->ac_inode); struct ext4_sb_info *sbi = EXT4_SB(ac->ac_sb); struct ext4_prealloc_space *tmp_pa = NULL, *left_pa = NULL, *right_pa = NULL; struct rb_node *iter; - ext4_lblk_t new_start, new_end; - ext4_lblk_t tmp_pa_start, tmp_pa_end, left_pa_end = -1, right_pa_start = -1; + ext4_lblk_t new_start, tmp_pa_start, right_pa_start = -1; + loff_t new_end, tmp_pa_end, left_pa_end = -1; new_start = *start; new_end = *end; @@ -4284,7 +4285,7 @@ ext4_mb_pa_adjust_overlap(struct ext4_allocation_context *ac, tmp_pa = rb_entry(iter, struct ext4_prealloc_space, pa_node.inode_node); tmp_pa_start = tmp_pa->pa_lstart; - tmp_pa_end = tmp_pa->pa_lstart + EXT4_C2B(sbi, tmp_pa->pa_len); + tmp_pa_end = pa_logical_end(sbi, tmp_pa); /* PA must not overlap original request */ spin_lock(&tmp_pa->pa_lock); @@ -4364,8 +4365,7 @@ ext4_mb_pa_adjust_overlap(struct ext4_allocation_context *ac, } if (left_pa) { - left_pa_end = - left_pa->pa_lstart + EXT4_C2B(sbi, left_pa->pa_len); + left_pa_end = pa_logical_end(sbi, left_pa); BUG_ON(left_pa_end > ac->ac_o_ex.fe_logical); } @@ -4404,8 +4404,7 @@ ext4_mb_normalize_request(struct ext4_allocation_context *ac, struct ext4_sb_info *sbi = EXT4_SB(ac->ac_sb); struct ext4_super_block *es = sbi->s_es; int bsbits, max; - ext4_lblk_t end; - loff_t size, start_off; + loff_t size, start_off, end; loff_t orig_size __maybe_unused; ext4_lblk_t start; @@ -4432,7 +4431,7 @@ ext4_mb_normalize_request(struct ext4_allocation_context *ac, /* first, let's learn actual file size * given current request is allocated */ - size = ac->ac_o_ex.fe_logical + EXT4_C2B(sbi, ac->ac_o_ex.fe_len); + size = extent_logical_end(sbi, &ac->ac_o_ex); size = size << bsbits; if (size < i_size_read(ac->ac_inode)) size = i_size_read(ac->ac_inode); @@ -4766,7 +4765,6 @@ ext4_mb_use_preallocated(struct ext4_allocation_context *ac) struct ext4_inode_info *ei = EXT4_I(ac->ac_inode); struct ext4_locality_group *lg; struct ext4_prealloc_space *tmp_pa = NULL, *cpa = NULL; - loff_t tmp_pa_end; struct rb_node *iter; ext4_fsblk_t goal_block; @@ -4862,9 +4860,7 @@ ext4_mb_use_preallocated(struct ext4_allocation_context *ac) * pa can possibly satisfy the request hence check if it overlaps * original logical start and stop searching if it doesn't. */ - tmp_pa_end = (loff_t)tmp_pa->pa_lstart + EXT4_C2B(sbi, tmp_pa->pa_len); - - if (ac->ac_o_ex.fe_logical >= tmp_pa_end) { + if (ac->ac_o_ex.fe_logical >= pa_logical_end(sbi, tmp_pa)) { spin_unlock(&tmp_pa->pa_lock); goto try_group_pa; } @@ -4984,7 +4980,6 @@ static void ext4_mb_generate_from_freelist(struct super_block *sb, void *bitmap, mb_set_bits(bitmap, entry->efd_start_cluster, entry->efd_count); n = rb_next(n); } - return; } /* @@ -5180,8 +5175,11 @@ ext4_mb_new_inode_pa(struct ext4_allocation_context *ac) pa = ac->ac_pa; if (ac->ac_b_ex.fe_len < ac->ac_orig_goal_len) { - int new_bex_start; - int new_bex_end; + struct ext4_free_extent ex = { + .fe_logical = ac->ac_g_ex.fe_logical, + .fe_len = ac->ac_orig_goal_len, + }; + loff_t orig_goal_end = extent_logical_end(sbi, &ex); /* we can't allocate as much as normalizer wants. * so, found space must get proper lstart @@ -5200,29 +5198,23 @@ ext4_mb_new_inode_pa(struct ext4_allocation_context *ac) * still cover original start * 3. Else, keep the best ex at start of original request. */ - new_bex_end = ac->ac_g_ex.fe_logical + - EXT4_C2B(sbi, ac->ac_orig_goal_len); - new_bex_start = new_bex_end - EXT4_C2B(sbi, ac->ac_b_ex.fe_len); - if (ac->ac_o_ex.fe_logical >= new_bex_start) - goto adjust_bex; + ex.fe_len = ac->ac_b_ex.fe_len; - new_bex_start = ac->ac_g_ex.fe_logical; - new_bex_end = - new_bex_start + EXT4_C2B(sbi, ac->ac_b_ex.fe_len); - if (ac->ac_o_ex.fe_logical < new_bex_end) + ex.fe_logical = orig_goal_end - EXT4_C2B(sbi, ex.fe_len); + if (ac->ac_o_ex.fe_logical >= ex.fe_logical) goto adjust_bex; - new_bex_start = ac->ac_o_ex.fe_logical; - new_bex_end = - new_bex_start + EXT4_C2B(sbi, ac->ac_b_ex.fe_len); + ex.fe_logical = ac->ac_g_ex.fe_logical; + if (ac->ac_o_ex.fe_logical < extent_logical_end(sbi, &ex)) + goto adjust_bex; + ex.fe_logical = ac->ac_o_ex.fe_logical; adjust_bex: - ac->ac_b_ex.fe_logical = new_bex_start; + ac->ac_b_ex.fe_logical = ex.fe_logical; BUG_ON(ac->ac_o_ex.fe_logical < ac->ac_b_ex.fe_logical); BUG_ON(ac->ac_o_ex.fe_len > ac->ac_b_ex.fe_len); - BUG_ON(new_bex_end > (ac->ac_g_ex.fe_logical + - EXT4_C2B(sbi, ac->ac_orig_goal_len))); + BUG_ON(extent_logical_end(sbi, &ex) > orig_goal_end); } pa->pa_lstart = ac->ac_b_ex.fe_logical; @@ -5419,7 +5411,7 @@ ext4_mb_discard_group_preallocations(struct super_block *sb, struct ext4_group_info *grp = ext4_get_group_info(sb, group); struct buffer_head *bitmap_bh = NULL; struct ext4_prealloc_space *pa, *tmp; - struct list_head list; + LIST_HEAD(list); struct ext4_buddy e4b; struct ext4_inode_info *ei; int err; @@ -5448,7 +5440,6 @@ ext4_mb_discard_group_preallocations(struct super_block *sb, goto out_dbg; } - INIT_LIST_HEAD(&list); ext4_lock_group(sb, group); list_for_each_entry_safe(pa, tmp, &grp->bb_prealloc_list, pa_group_list) { @@ -5529,7 +5520,7 @@ void ext4_discard_preallocations(struct inode *inode, unsigned int needed) struct buffer_head *bitmap_bh = NULL; struct ext4_prealloc_space *pa, *tmp; ext4_group_t group = 0; - struct list_head list; + LIST_HEAD(list); struct ext4_buddy e4b; struct rb_node *iter; int err; @@ -5546,8 +5537,6 @@ void ext4_discard_preallocations(struct inode *inode, unsigned int needed) trace_ext4_discard_preallocations(inode, atomic_read(&ei->i_prealloc_active), needed); - INIT_LIST_HEAD(&list); - if (needed == 0) needed = UINT_MAX; @@ -5671,7 +5660,7 @@ static inline void ext4_mb_show_pa(struct super_block *sb) { ext4_group_t i, ngroups; - if (ext4_test_mount_flag(sb, EXT4_MF_FS_ABORTED)) + if (ext4_forced_shutdown(sb)) return; ngroups = ext4_get_groups_count(sb); @@ -5705,7 +5694,7 @@ static void ext4_mb_show_ac(struct ext4_allocation_context *ac) { struct super_block *sb = ac->ac_sb; - if (ext4_test_mount_flag(sb, EXT4_MF_FS_ABORTED)) + if (ext4_forced_shutdown(sb)) return; mb_debug(sb, "Can't allocate:" @@ -5738,12 +5727,10 @@ static void ext4_mb_show_ac(struct ext4_allocation_context *ac) #else static inline void ext4_mb_show_pa(struct super_block *sb) { - return; } static inline void ext4_mb_show_ac(struct ext4_allocation_context *ac) { ext4_mb_show_pa(ac->ac_sb); - return; } #endif @@ -5769,7 +5756,7 @@ static void ext4_mb_group_or_file(struct ext4_allocation_context *ac) group_pa_eligible = sbi->s_mb_group_prealloc > 0; inode_pa_eligible = true; - size = ac->ac_o_ex.fe_logical + EXT4_C2B(sbi, ac->ac_o_ex.fe_len); + size = extent_logical_end(sbi, &ac->ac_o_ex); isize = (i_size_read(ac->ac_inode) + ac->ac_sb->s_blocksize - 1) >> bsbits; @@ -5865,13 +5852,11 @@ ext4_mb_discard_lg_preallocations(struct super_block *sb, { ext4_group_t group = 0; struct ext4_buddy e4b; - struct list_head discard_list; + LIST_HEAD(discard_list); struct ext4_prealloc_space *pa, *tmp; mb_debug(sb, "discard locality group preallocation\n"); - INIT_LIST_HEAD(&discard_list); - spin_lock(&lg->lg_prealloc_lock); list_for_each_entry_rcu(pa, &lg->lg_prealloc_list[order], pa_node.lg_list, @@ -5984,12 +5969,9 @@ static void ext4_mb_add_n_trim(struct ext4_allocation_context *ac) spin_unlock(&lg->lg_prealloc_lock); /* Now trim the list to be not more than 8 elements */ - if (lg_prealloc_count > 8) { + if (lg_prealloc_count > 8) ext4_mb_discard_lg_preallocations(sb, lg, order, lg_prealloc_count); - return; - } - return ; } /* @@ -6102,7 +6084,7 @@ ext4_mb_new_blocks_simple(struct ext4_allocation_request *ar, int *errp) ext4_grpblk_t max = EXT4_CLUSTERS_PER_GROUP(sb); ext4_grpblk_t i = 0; ext4_fsblk_t goal, block; - struct ext4_super_block *es = EXT4_SB(sb)->s_es; + struct ext4_super_block *es = sbi->s_es; goal = ar->goal; if (goal < le32_to_cpu(es->s_first_data_block) || @@ -6643,7 +6625,6 @@ do_more: error_return: brelse(bitmap_bh); ext4_std_error(sb, err); - return; } /** @@ -6746,7 +6727,6 @@ void ext4_free_blocks(handle_t *handle, struct inode *inode, } ext4_mb_clear_bb(handle, inode, block, count, flags); - return; } /** @@ -6936,8 +6916,7 @@ __releases(ext4_group_lock_ptr(sb, e4b->bd_group)) void *bitmap; bitmap = e4b->bd_bitmap; - start = (e4b->bd_info->bb_first_free > start) ? - e4b->bd_info->bb_first_free : start; + start = max(e4b->bd_info->bb_first_free, start); count = 0; free_count = 0; @@ -7154,8 +7133,7 @@ ext4_mballoc_query_range( ext4_lock_group(sb, group); - start = (e4b.bd_info->bb_first_free > start) ? - e4b.bd_info->bb_first_free : start; + start = max(e4b.bd_info->bb_first_free, start); if (end >= EXT4_CLUSTERS_PER_GROUP(sb)) end = EXT4_CLUSTERS_PER_GROUP(sb) - 1; diff --git a/fs/ext4/mballoc.h b/fs/ext4/mballoc.h index df6b5e7c2274..d7aeb5da7d86 100644 --- a/fs/ext4/mballoc.h +++ b/fs/ext4/mballoc.h @@ -233,6 +233,20 @@ static inline ext4_fsblk_t ext4_grp_offs_to_block(struct super_block *sb, (fex->fe_start << EXT4_SB(sb)->s_cluster_bits); } +static inline loff_t extent_logical_end(struct ext4_sb_info *sbi, + struct ext4_free_extent *fex) +{ + /* Use loff_t to avoid end exceeding ext4_lblk_t max. */ + return (loff_t)fex->fe_logical + EXT4_C2B(sbi, fex->fe_len); +} + +static inline loff_t pa_logical_end(struct ext4_sb_info *sbi, + struct ext4_prealloc_space *pa) +{ + /* Use loff_t to avoid end exceeding ext4_lblk_t max. */ + return (loff_t)pa->pa_lstart + EXT4_C2B(sbi, pa->pa_len); +} + typedef int (*ext4_mballoc_query_range_fn)( struct super_block *sb, ext4_group_t agno, diff --git a/fs/ext4/mmp.c b/fs/ext4/mmp.c index 0aaf38ffcb6e..bd946d0c71b7 100644 --- a/fs/ext4/mmp.c +++ b/fs/ext4/mmp.c @@ -162,7 +162,7 @@ static int kmmpd(void *data) memcpy(mmp->mmp_nodename, init_utsname()->nodename, sizeof(mmp->mmp_nodename)); - while (!kthread_should_stop() && !sb_rdonly(sb)) { + while (!kthread_should_stop() && !ext4_forced_shutdown(sb)) { if (!ext4_has_feature_mmp(sb)) { ext4_warning(sb, "kmmpd being stopped since MMP feature" " has been disabled."); diff --git a/fs/ext4/namei.c b/fs/ext4/namei.c index 0caf6c730ce3..41a6411c600b 100644 --- a/fs/ext4/namei.c +++ b/fs/ext4/namei.c @@ -1445,7 +1445,7 @@ int ext4_fname_setup_ci_filename(struct inode *dir, const struct qstr *iname, struct dx_hash_info *hinfo = &name->hinfo; int len; - if (!IS_CASEFOLDED(dir) || !dir->i_sb->s_encoding || + if (!IS_CASEFOLDED(dir) || (IS_ENCRYPTED(dir) && !fscrypt_has_encryption_key(dir))) { cf_name->name = NULL; return 0; @@ -1496,7 +1496,7 @@ static bool ext4_match(struct inode *parent, #endif #if IS_ENABLED(CONFIG_UNICODE) - if (parent->i_sb->s_encoding && IS_CASEFOLDED(parent) && + if (IS_CASEFOLDED(parent) && (!IS_ENCRYPTED(parent) || fscrypt_has_encryption_key(parent))) { if (fname->cf_name.name) { struct qstr cf = {.name = fname->cf_name.name, @@ -2203,7 +2203,7 @@ static int add_dirent_to_buf(handle_t *handle, struct ext4_filename *fname, * happen is that the times are slightly out of date * and/or different from the directory change time. */ - dir->i_mtime = dir->i_ctime = current_time(dir); + dir->i_mtime = inode_set_ctime_current(dir); ext4_update_dx_flag(dir); inode_inc_iversion(dir); err2 = ext4_mark_inode_dirty(handle, dir); @@ -2393,7 +2393,7 @@ static int ext4_add_entry(handle_t *handle, struct dentry *dentry, #if IS_ENABLED(CONFIG_UNICODE) if (sb_has_strict_encoding(sb) && IS_CASEFOLDED(dir) && - sb->s_encoding && utf8_validate(sb->s_encoding, &dentry->d_name)) + utf8_validate(sb->s_encoding, &dentry->d_name)) return -EINVAL; #endif @@ -2799,6 +2799,7 @@ static int ext4_add_nondir(handle_t *handle, return err; } drop_nlink(inode); + ext4_mark_inode_dirty(handle, inode); ext4_orphan_add(handle, inode); unlock_new_inode(inode); return err; @@ -3142,7 +3143,7 @@ static int ext4_rmdir(struct inode *dir, struct dentry *dentry) struct ext4_dir_entry_2 *de; handle_t *handle = NULL; - if (unlikely(ext4_forced_shutdown(EXT4_SB(dir->i_sb)))) + if (unlikely(ext4_forced_shutdown(dir->i_sb))) return -EIO; /* Initialize quotas before so that eventual writes go in @@ -3197,7 +3198,8 @@ static int ext4_rmdir(struct inode *dir, struct dentry *dentry) * recovery. */ inode->i_size = 0; ext4_orphan_add(handle, inode); - inode->i_ctime = dir->i_ctime = dir->i_mtime = current_time(inode); + dir->i_mtime = inode_set_ctime_current(dir); + inode_set_ctime_current(inode); retval = ext4_mark_inode_dirty(handle, inode); if (retval) goto end_rmdir; @@ -3271,7 +3273,7 @@ int __ext4_unlink(struct inode *dir, const struct qstr *d_name, retval = ext4_delete_entry(handle, dir, de, bh); if (retval) goto out_handle; - dir->i_ctime = dir->i_mtime = current_time(dir); + dir->i_mtime = inode_set_ctime_current(dir); ext4_update_dx_flag(dir); retval = ext4_mark_inode_dirty(handle, dir); if (retval) @@ -3286,7 +3288,7 @@ int __ext4_unlink(struct inode *dir, const struct qstr *d_name, drop_nlink(inode); if (!inode->i_nlink) ext4_orphan_add(handle, inode); - inode->i_ctime = current_time(inode); + inode_set_ctime_current(inode); retval = ext4_mark_inode_dirty(handle, inode); if (dentry && !retval) ext4_fc_track_unlink(handle, dentry); @@ -3301,7 +3303,7 @@ static int ext4_unlink(struct inode *dir, struct dentry *dentry) { int retval; - if (unlikely(ext4_forced_shutdown(EXT4_SB(dir->i_sb)))) + if (unlikely(ext4_forced_shutdown(dir->i_sb))) return -EIO; trace_ext4_unlink_enter(dir, dentry); @@ -3369,7 +3371,7 @@ static int ext4_symlink(struct mnt_idmap *idmap, struct inode *dir, struct fscrypt_str disk_link; int retries = 0; - if (unlikely(ext4_forced_shutdown(EXT4_SB(dir->i_sb)))) + if (unlikely(ext4_forced_shutdown(dir->i_sb))) return -EIO; err = fscrypt_prepare_symlink(dir, symname, len, dir->i_sb->s_blocksize, @@ -3436,6 +3438,7 @@ retry: err_drop_inode: clear_nlink(inode); + ext4_mark_inode_dirty(handle, inode); ext4_orphan_add(handle, inode); unlock_new_inode(inode); if (handle) @@ -3463,7 +3466,7 @@ retry: if (IS_DIRSYNC(dir)) ext4_handle_sync(handle); - inode->i_ctime = current_time(inode); + inode_set_ctime_current(inode); ext4_inc_count(inode); ihold(inode); @@ -3641,8 +3644,7 @@ static int ext4_setent(handle_t *handle, struct ext4_renament *ent, if (ext4_has_feature_filetype(ent->dir->i_sb)) ent->de->file_type = file_type; inode_inc_iversion(ent->dir); - ent->dir->i_ctime = ent->dir->i_mtime = - current_time(ent->dir); + ent->dir->i_mtime = inode_set_ctime_current(ent->dir); retval = ext4_mark_inode_dirty(handle, ent->dir); BUFFER_TRACE(ent->bh, "call ext4_handle_dirty_metadata"); if (!ent->inlined) { @@ -3941,7 +3943,7 @@ static int ext4_rename(struct mnt_idmap *idmap, struct inode *old_dir, * Like most other Unix systems, set the ctime for inodes on a * rename. */ - old.inode->i_ctime = current_time(old.inode); + inode_set_ctime_current(old.inode); retval = ext4_mark_inode_dirty(handle, old.inode); if (unlikely(retval)) goto end_rename; @@ -3955,9 +3957,9 @@ static int ext4_rename(struct mnt_idmap *idmap, struct inode *old_dir, if (new.inode) { ext4_dec_count(new.inode); - new.inode->i_ctime = current_time(new.inode); + inode_set_ctime_current(new.inode); } - old.dir->i_ctime = old.dir->i_mtime = current_time(old.dir); + old.dir->i_mtime = inode_set_ctime_current(old.dir); ext4_update_dx_flag(old.dir); if (old.dir_bh) { retval = ext4_rename_dir_finish(handle, &old, new.dir->i_ino); @@ -4021,6 +4023,7 @@ end_rename: ext4_resetent(handle, &old, old.inode->i_ino, old_file_type); drop_nlink(whiteout); + ext4_mark_inode_dirty(handle, whiteout); ext4_orphan_add(handle, whiteout); } unlock_new_inode(whiteout); @@ -4053,7 +4056,6 @@ static int ext4_cross_rename(struct inode *old_dir, struct dentry *old_dentry, }; u8 new_file_type; int retval; - struct timespec64 ctime; if ((ext4_test_inode_flag(new_dir, EXT4_INODE_PROJINHERIT) && !projid_eq(EXT4_I(new_dir)->i_projid, @@ -4147,9 +4149,8 @@ static int ext4_cross_rename(struct inode *old_dir, struct dentry *old_dentry, * Like most other Unix systems, set the ctime for inodes on a * rename. */ - ctime = current_time(old.inode); - old.inode->i_ctime = ctime; - new.inode->i_ctime = ctime; + inode_set_ctime_current(old.inode); + inode_set_ctime_current(new.inode); retval = ext4_mark_inode_dirty(handle, old.inode); if (unlikely(retval)) goto end_rename; @@ -4189,7 +4190,7 @@ static int ext4_rename2(struct mnt_idmap *idmap, { int err; - if (unlikely(ext4_forced_shutdown(EXT4_SB(old_dir->i_sb)))) + if (unlikely(ext4_forced_shutdown(old_dir->i_sb))) return -EIO; if (flags & ~(RENAME_NOREPLACE | RENAME_EXCHANGE | RENAME_WHITEOUT)) diff --git a/fs/ext4/page-io.c b/fs/ext4/page-io.c index 3621f29ec671..dfdd7e5cf038 100644 --- a/fs/ext4/page-io.c +++ b/fs/ext4/page-io.c @@ -184,7 +184,7 @@ static int ext4_end_io_end(ext4_io_end_t *io_end) io_end->handle = NULL; /* Following call will use up the handle */ ret = ext4_convert_unwritten_io_end_vec(handle, io_end); - if (ret < 0 && !ext4_forced_shutdown(EXT4_SB(inode->i_sb))) { + if (ret < 0 && !ext4_forced_shutdown(inode->i_sb)) { ext4_msg(inode->i_sb, KERN_EMERG, "failed to convert unwritten extents to written " "extents -- potential data loss! " diff --git a/fs/ext4/super.c b/fs/ext4/super.c index c94ebf704616..38217422f938 100644 --- a/fs/ext4/super.c +++ b/fs/ext4/super.c @@ -93,6 +93,7 @@ static int ext4_get_tree(struct fs_context *fc); static int ext4_reconfigure(struct fs_context *fc); static void ext4_fc_free(struct fs_context *fc); static int ext4_init_fs_context(struct fs_context *fc); +static void ext4_kill_sb(struct super_block *sb); static const struct fs_parameter_spec ext4_param_specs[]; /* @@ -135,12 +136,12 @@ static struct file_system_type ext2_fs_type = { .name = "ext2", .init_fs_context = ext4_init_fs_context, .parameters = ext4_param_specs, - .kill_sb = kill_block_super, + .kill_sb = ext4_kill_sb, .fs_flags = FS_REQUIRES_DEV, }; MODULE_ALIAS_FS("ext2"); MODULE_ALIAS("ext2"); -#define IS_EXT2_SB(sb) ((sb)->s_bdev->bd_holder == &ext2_fs_type) +#define IS_EXT2_SB(sb) ((sb)->s_type == &ext2_fs_type) #else #define IS_EXT2_SB(sb) (0) #endif @@ -151,12 +152,12 @@ static struct file_system_type ext3_fs_type = { .name = "ext3", .init_fs_context = ext4_init_fs_context, .parameters = ext4_param_specs, - .kill_sb = kill_block_super, + .kill_sb = ext4_kill_sb, .fs_flags = FS_REQUIRES_DEV, }; MODULE_ALIAS_FS("ext3"); MODULE_ALIAS("ext3"); -#define IS_EXT3_SB(sb) ((sb)->s_bdev->bd_holder == &ext3_fs_type) +#define IS_EXT3_SB(sb) ((sb)->s_type == &ext3_fs_type) static inline void __ext4_read_bh(struct buffer_head *bh, blk_opf_t op_flags, @@ -433,6 +434,57 @@ static time64_t __ext4_get_tstamp(__le32 *lo, __u8 *hi) #define ext4_get_tstamp(es, tstamp) \ __ext4_get_tstamp(&(es)->tstamp, &(es)->tstamp ## _hi) +#define EXT4_SB_REFRESH_INTERVAL_SEC (3600) /* seconds (1 hour) */ +#define EXT4_SB_REFRESH_INTERVAL_KB (16384) /* kilobytes (16MB) */ + +/* + * The ext4_maybe_update_superblock() function checks and updates the + * superblock if needed. + * + * This function is designed to update the on-disk superblock only under + * certain conditions to prevent excessive disk writes and unnecessary + * waking of the disk from sleep. The superblock will be updated if: + * 1. More than an hour has passed since the last superblock update, and + * 2. More than 16MB have been written since the last superblock update. + * + * @sb: The superblock + */ +static void ext4_maybe_update_superblock(struct super_block *sb) +{ + struct ext4_sb_info *sbi = EXT4_SB(sb); + struct ext4_super_block *es = sbi->s_es; + journal_t *journal = sbi->s_journal; + time64_t now; + __u64 last_update; + __u64 lifetime_write_kbytes; + __u64 diff_size; + + if (sb_rdonly(sb) || !(sb->s_flags & SB_ACTIVE) || + !journal || (journal->j_flags & JBD2_UNMOUNT)) + return; + + now = ktime_get_real_seconds(); + last_update = ext4_get_tstamp(es, s_wtime); + + if (likely(now - last_update < EXT4_SB_REFRESH_INTERVAL_SEC)) + return; + + lifetime_write_kbytes = sbi->s_kbytes_written + + ((part_stat_read(sb->s_bdev, sectors[STAT_WRITE]) - + sbi->s_sectors_written_start) >> 1); + + /* Get the number of kilobytes not written to disk to account + * for statistics and compare with a multiple of 16 MB. This + * is used to determine when the next superblock commit should + * occur (i.e. not more often than once per 16MB if there was + * less written in an hour). + */ + diff_size = lifetime_write_kbytes - le64_to_cpu(es->s_kbytes_written); + + if (diff_size > EXT4_SB_REFRESH_INTERVAL_KB) + schedule_work(&EXT4_SB(sb)->s_sb_upd_work); +} + /* * The del_gendisk() function uninitializes the disk-specific data * structures, including the bdi structure, without telling anyone @@ -459,6 +511,7 @@ static void ext4_journal_commit_callback(journal_t *journal, transaction_t *txn) BUG_ON(txn->t_state == T_FINISHED); ext4_process_freed_data(sb, txn->t_tid); + ext4_maybe_update_superblock(sb); spin_lock(&sbi->s_md_lock); while (!list_empty(&txn->t_private_list)) { @@ -657,7 +710,7 @@ static void ext4_handle_error(struct super_block *sb, bool force_ro, int error, WARN_ON_ONCE(1); if (!continue_fs && !sb_rdonly(sb)) { - ext4_set_mount_flag(sb, EXT4_MF_FS_ABORTED); + set_bit(EXT4_FLAGS_SHUTDOWN, &EXT4_SB(sb)->s_ext4_flags); if (journal) jbd2_journal_abort(journal, -EIO); } @@ -671,7 +724,7 @@ static void ext4_handle_error(struct super_block *sb, bool force_ro, int error, * defer superblock flushing to a workqueue. */ if (continue_fs && journal) - schedule_work(&EXT4_SB(sb)->s_error_work); + schedule_work(&EXT4_SB(sb)->s_sb_upd_work); else ext4_commit_super(sb); } @@ -698,10 +751,10 @@ static void ext4_handle_error(struct super_block *sb, bool force_ro, int error, sb->s_flags |= SB_RDONLY; } -static void flush_stashed_error_work(struct work_struct *work) +static void update_super_work(struct work_struct *work) { struct ext4_sb_info *sbi = container_of(work, struct ext4_sb_info, - s_error_work); + s_sb_upd_work); journal_t *journal = sbi->s_journal; handle_t *handle; @@ -715,6 +768,7 @@ static void flush_stashed_error_work(struct work_struct *work) */ if (!sb_rdonly(sbi->s_sb) && journal) { struct buffer_head *sbh = sbi->s_sbh; + bool call_notify_err; handle = jbd2_journal_start(journal, 1); if (IS_ERR(handle)) goto write_directly; @@ -722,6 +776,10 @@ static void flush_stashed_error_work(struct work_struct *work) jbd2_journal_stop(handle); goto write_directly; } + + if (sbi->s_add_error_count > 0) + call_notify_err = true; + ext4_update_super(sbi->s_sb); if (buffer_write_io_error(sbh) || !buffer_uptodate(sbh)) { ext4_msg(sbi->s_sb, KERN_ERR, "previous I/O error to " @@ -735,7 +793,10 @@ static void flush_stashed_error_work(struct work_struct *work) goto write_directly; } jbd2_journal_stop(handle); - ext4_notify_error_sysfs(sbi); + + if (call_notify_err) + ext4_notify_error_sysfs(sbi); + return; } write_directly: @@ -758,7 +819,7 @@ void __ext4_error(struct super_block *sb, const char *function, struct va_format vaf; va_list args; - if (unlikely(ext4_forced_shutdown(EXT4_SB(sb)))) + if (unlikely(ext4_forced_shutdown(sb))) return; trace_ext4_error(sb, function, line); @@ -783,7 +844,7 @@ void __ext4_error_inode(struct inode *inode, const char *function, va_list args; struct va_format vaf; - if (unlikely(ext4_forced_shutdown(EXT4_SB(inode->i_sb)))) + if (unlikely(ext4_forced_shutdown(inode->i_sb))) return; trace_ext4_error(inode->i_sb, function, line); @@ -818,7 +879,7 @@ void __ext4_error_file(struct file *file, const char *function, struct inode *inode = file_inode(file); char pathname[80], *path; - if (unlikely(ext4_forced_shutdown(EXT4_SB(inode->i_sb)))) + if (unlikely(ext4_forced_shutdown(inode->i_sb))) return; trace_ext4_error(inode->i_sb, function, line); @@ -898,7 +959,7 @@ void __ext4_std_error(struct super_block *sb, const char *function, char nbuf[16]; const char *errstr; - if (unlikely(ext4_forced_shutdown(EXT4_SB(sb)))) + if (unlikely(ext4_forced_shutdown(sb))) return; /* Special case: if the error is EROFS, and we're not already @@ -992,7 +1053,7 @@ __acquires(bitlock) struct va_format vaf; va_list args; - if (unlikely(ext4_forced_shutdown(EXT4_SB(sb)))) + if (unlikely(ext4_forced_shutdown(sb))) return; trace_ext4_error(sb, function, line); @@ -1018,7 +1079,7 @@ __acquires(bitlock) if (!bdev_read_only(sb->s_bdev)) { save_error_info(sb, EFSCORRUPTED, ino, block, function, line); - schedule_work(&EXT4_SB(sb)->s_error_work); + schedule_work(&EXT4_SB(sb)->s_sb_upd_work); } return; } @@ -1096,54 +1157,6 @@ void ext4_update_dynamic_rev(struct super_block *sb) */ } -static void ext4_bdev_mark_dead(struct block_device *bdev) -{ - ext4_force_shutdown(bdev->bd_holder, EXT4_GOING_FLAGS_NOLOGFLUSH); -} - -static const struct blk_holder_ops ext4_holder_ops = { - .mark_dead = ext4_bdev_mark_dead, -}; - -/* - * Open the external journal device - */ -static struct block_device *ext4_blkdev_get(dev_t dev, struct super_block *sb) -{ - struct block_device *bdev; - - bdev = blkdev_get_by_dev(dev, BLK_OPEN_READ | BLK_OPEN_WRITE, sb, - &ext4_holder_ops); - if (IS_ERR(bdev)) - goto fail; - return bdev; - -fail: - ext4_msg(sb, KERN_ERR, - "failed to open journal device unknown-block(%u,%u) %ld", - MAJOR(dev), MINOR(dev), PTR_ERR(bdev)); - return NULL; -} - -/* - * Release the journal device - */ -static void ext4_blkdev_remove(struct ext4_sb_info *sbi) -{ - struct block_device *bdev; - bdev = sbi->s_journal_bdev; - if (bdev) { - /* - * Invalidate the journal device's buffers. We don't want them - * floating about in memory - the physical journal device may - * hotswapped, and it breaks the `ro-after' testing code. - */ - invalidate_bdev(bdev); - blkdev_put(bdev, sbi->s_sb); - sbi->s_journal_bdev = NULL; - } -} - static inline struct inode *orphan_list_entry(struct list_head *l) { return &list_entry(l, struct ext4_inode_info, i_orphan)->vfs_inode; @@ -1278,10 +1291,10 @@ static void ext4_put_super(struct super_block *sb) * Unregister sysfs before destroying jbd2 journal. * Since we could still access attr_journal_task attribute via sysfs * path which could have sbi->s_journal->j_task as NULL - * Unregister sysfs before flush sbi->s_error_work. + * Unregister sysfs before flush sbi->s_sb_upd_work. * Since user may read /proc/fs/ext4/xx/mb_groups during umount, If * read metadata verify failed then will queue error work. - * flush_stashed_error_work will call start_this_handle may trigger + * update_super_work will call start_this_handle may trigger * BUG_ON. */ ext4_unregister_sysfs(sb); @@ -1293,7 +1306,7 @@ static void ext4_put_super(struct super_block *sb) ext4_unregister_li_request(sb); ext4_quotas_off(sb, EXT4_MAXQUOTAS); - flush_work(&sbi->s_error_work); + flush_work(&sbi->s_sb_upd_work); destroy_workqueue(sbi->rsv_conversion_wq); ext4_release_orphan_info(sb); @@ -1339,8 +1352,13 @@ static void ext4_put_super(struct super_block *sb) sync_blockdev(sb->s_bdev); invalidate_bdev(sb->s_bdev); if (sbi->s_journal_bdev) { + /* + * Invalidate the journal device's buffers. We don't want them + * floating about in memory - the physical journal device may + * hotswapped, and it breaks the `ro-after' testing code. + */ sync_blockdev(sbi->s_journal_bdev); - ext4_blkdev_remove(sbi); + invalidate_bdev(sbi->s_journal_bdev); } ext4_xattr_destroy_cache(sbi->s_ea_inode_cache); @@ -1897,6 +1915,7 @@ static const struct mount_opts { {Opt_fc_debug_force, EXT4_MOUNT2_JOURNAL_FAST_COMMIT, MOPT_SET | MOPT_2 | MOPT_EXT4_ONLY}, #endif + {Opt_abort, EXT4_MOUNT2_ABORT, MOPT_SET | MOPT_2}, {Opt_err, 0, 0} }; @@ -1965,8 +1984,6 @@ struct ext4_fs_context { unsigned int mask_s_mount_opt; unsigned int vals_s_mount_opt2; unsigned int mask_s_mount_opt2; - unsigned long vals_s_mount_flags; - unsigned long mask_s_mount_flags; unsigned int opt_flags; /* MOPT flags */ unsigned int spec; u32 s_max_batch_time; @@ -2117,12 +2134,6 @@ EXT4_SET_CTX(mount_opt2); EXT4_CLEAR_CTX(mount_opt2); EXT4_TEST_CTX(mount_opt2); -static inline void ctx_set_mount_flag(struct ext4_fs_context *ctx, int bit) -{ - set_bit(bit, &ctx->mask_s_mount_flags); - set_bit(bit, &ctx->vals_s_mount_flags); -} - static int ext4_parse_param(struct fs_context *fc, struct fs_parameter *param) { struct ext4_fs_context *ctx = fc->fs_private; @@ -2186,9 +2197,6 @@ static int ext4_parse_param(struct fs_context *fc, struct fs_parameter *param) ext4_msg(NULL, KERN_WARNING, "Ignoring removed %s option", param->key); return 0; - case Opt_abort: - ctx_set_mount_flag(ctx, EXT4_MF_FS_ABORTED); - return 0; case Opt_inlinecrypt: #ifdef CONFIG_FS_ENCRYPTION_INLINE_CRYPT ctx_set_flags(ctx, SB_INLINECRYPT); @@ -2842,8 +2850,6 @@ static void ext4_apply_options(struct fs_context *fc, struct super_block *sb) sbi->s_mount_opt |= ctx->vals_s_mount_opt; sbi->s_mount_opt2 &= ~ctx->mask_s_mount_opt2; sbi->s_mount_opt2 |= ctx->vals_s_mount_opt2; - sbi->s_mount_flags &= ~ctx->mask_s_mount_flags; - sbi->s_mount_flags |= ctx->vals_s_mount_flags; sb->s_flags &= ~ctx->mask_s_flags; sb->s_flags |= ctx->vals_s_flags; @@ -4232,7 +4238,7 @@ int ext4_calculate_overhead(struct super_block *sb) else if (ext4_has_feature_journal(sb) && !sbi->s_journal && j_inum) { /* j_inum for internal journal is non-zero */ j_inode = ext4_get_journal_inode(sb, j_inum); - if (j_inode) { + if (!IS_ERR(j_inode)) { j_blocks = j_inode->i_size >> sb->s_blocksize_bits; overhead += EXT4_NUM_B2C(sbi, j_blocks); iput(j_inode); @@ -4970,8 +4976,8 @@ static int ext4_load_and_init_journal(struct super_block *sb, return 0; out: - /* flush s_error_work before journal destroy. */ - flush_work(&sbi->s_error_work); + /* flush s_sb_upd_work before destroying the journal. */ + flush_work(&sbi->s_sb_upd_work); jbd2_journal_destroy(sbi->s_journal); sbi->s_journal = NULL; return -EINVAL; @@ -5294,7 +5300,7 @@ static int __ext4_fill_super(struct fs_context *fc, struct super_block *sb) timer_setup(&sbi->s_err_report, print_daily_error_info, 0); spin_lock_init(&sbi->s_error_lock); - INIT_WORK(&sbi->s_error_work, flush_stashed_error_work); + INIT_WORK(&sbi->s_sb_upd_work, update_super_work); err = ext4_group_desc_init(sb, es, logical_sb_block, &first_not_zeroed); if (err) @@ -5572,7 +5578,6 @@ static int __ext4_fill_super(struct fs_context *fc, struct super_block *sb) spin_lock_init(&sbi->s_bdev_wb_lock); errseq_check_and_advance(&sb->s_bdev->bd_inode->i_mapping->wb_err, &sbi->s_bdev_wb_err); - sb->s_bdev->bd_super = sb; EXT4_SB(sb)->s_mount_state |= EXT4_ORPHAN_FS; ext4_orphan_cleanup(sb, es); EXT4_SB(sb)->s_mount_state &= ~EXT4_ORPHAN_FS; @@ -5638,16 +5643,16 @@ failed_mount_wq: sbi->s_ea_block_cache = NULL; if (sbi->s_journal) { - /* flush s_error_work before journal destroy. */ - flush_work(&sbi->s_error_work); + /* flush s_sb_upd_work before journal destroy. */ + flush_work(&sbi->s_sb_upd_work); jbd2_journal_destroy(sbi->s_journal); sbi->s_journal = NULL; } failed_mount3a: ext4_es_unregister_shrinker(sbi); failed_mount3: - /* flush s_error_work before sbi destroy */ - flush_work(&sbi->s_error_work); + /* flush s_sb_upd_work before sbi destroy */ + flush_work(&sbi->s_sb_upd_work); del_timer_sync(&sbi->s_err_report); ext4_stop_mmpd(sbi); ext4_group_desc_free(sbi); @@ -5664,9 +5669,11 @@ failed_mount: kfree(get_qf_name(sb, sbi, i)); #endif fscrypt_free_dummy_policy(&sbi->s_dummy_enc_policy); - /* ext4_blkdev_remove() calls kill_bdev(), release bh before it. */ brelse(sbi->s_sbh); - ext4_blkdev_remove(sbi); + if (sbi->s_journal_bdev) { + invalidate_bdev(sbi->s_journal_bdev); + blkdev_put(sbi->s_journal_bdev, sb); + } out_fail: invalidate_bdev(sb->s_bdev); sb->s_fs_info = NULL; @@ -5772,22 +5779,22 @@ static struct inode *ext4_get_journal_inode(struct super_block *sb, journal_inode = ext4_iget(sb, journal_inum, EXT4_IGET_SPECIAL); if (IS_ERR(journal_inode)) { ext4_msg(sb, KERN_ERR, "no journal found"); - return NULL; + return ERR_CAST(journal_inode); } if (!journal_inode->i_nlink) { make_bad_inode(journal_inode); iput(journal_inode); ext4_msg(sb, KERN_ERR, "journal inode is deleted"); - return NULL; + return ERR_PTR(-EFSCORRUPTED); } - - ext4_debug("Journal inode found at %p: %lld bytes\n", - journal_inode, journal_inode->i_size); if (!S_ISREG(journal_inode->i_mode) || IS_ENCRYPTED(journal_inode)) { ext4_msg(sb, KERN_ERR, "invalid journal inode"); iput(journal_inode); - return NULL; + return ERR_PTR(-EFSCORRUPTED); } + + ext4_debug("Journal inode found at %p: %lld bytes\n", + journal_inode, journal_inode->i_size); return journal_inode; } @@ -5813,24 +5820,21 @@ static int ext4_journal_bmap(journal_t *journal, sector_t *block) return 0; } -static journal_t *ext4_get_journal(struct super_block *sb, - unsigned int journal_inum) +static journal_t *ext4_open_inode_journal(struct super_block *sb, + unsigned int journal_inum) { struct inode *journal_inode; journal_t *journal; - if (WARN_ON_ONCE(!ext4_has_feature_journal(sb))) - return NULL; - journal_inode = ext4_get_journal_inode(sb, journal_inum); - if (!journal_inode) - return NULL; + if (IS_ERR(journal_inode)) + return ERR_CAST(journal_inode); journal = jbd2_journal_init_inode(journal_inode); - if (!journal) { + if (IS_ERR(journal)) { ext4_msg(sb, KERN_ERR, "Could not load journal inode"); iput(journal_inode); - return NULL; + return ERR_CAST(journal); } journal->j_private = sb; journal->j_bmap = ext4_journal_bmap; @@ -5838,40 +5842,47 @@ static journal_t *ext4_get_journal(struct super_block *sb, return journal; } -static journal_t *ext4_get_dev_journal(struct super_block *sb, - dev_t j_dev) +static struct block_device *ext4_get_journal_blkdev(struct super_block *sb, + dev_t j_dev, ext4_fsblk_t *j_start, + ext4_fsblk_t *j_len) { struct buffer_head *bh; - journal_t *journal; - ext4_fsblk_t start; - ext4_fsblk_t len; + struct block_device *bdev; int hblock, blocksize; ext4_fsblk_t sb_block; unsigned long offset; struct ext4_super_block *es; - struct block_device *bdev; - - if (WARN_ON_ONCE(!ext4_has_feature_journal(sb))) - return NULL; + int errno; - bdev = ext4_blkdev_get(j_dev, sb); - if (bdev == NULL) - return NULL; + /* see get_tree_bdev why this is needed and safe */ + up_write(&sb->s_umount); + bdev = blkdev_get_by_dev(j_dev, BLK_OPEN_READ | BLK_OPEN_WRITE, sb, + &fs_holder_ops); + down_write(&sb->s_umount); + if (IS_ERR(bdev)) { + ext4_msg(sb, KERN_ERR, + "failed to open journal device unknown-block(%u,%u) %ld", + MAJOR(j_dev), MINOR(j_dev), PTR_ERR(bdev)); + return ERR_CAST(bdev); + } blocksize = sb->s_blocksize; hblock = bdev_logical_block_size(bdev); if (blocksize < hblock) { ext4_msg(sb, KERN_ERR, "blocksize too small for journal device"); + errno = -EINVAL; goto out_bdev; } sb_block = EXT4_MIN_BLOCK_SIZE / blocksize; offset = EXT4_MIN_BLOCK_SIZE % blocksize; set_blocksize(bdev, blocksize); - if (!(bh = __bread(bdev, sb_block, blocksize))) { + bh = __bread(bdev, sb_block, blocksize); + if (!bh) { ext4_msg(sb, KERN_ERR, "couldn't read superblock of " "external journal"); + errno = -EINVAL; goto out_bdev; } @@ -5879,57 +5890,74 @@ static journal_t *ext4_get_dev_journal(struct super_block *sb, if ((le16_to_cpu(es->s_magic) != EXT4_SUPER_MAGIC) || !(le32_to_cpu(es->s_feature_incompat) & EXT4_FEATURE_INCOMPAT_JOURNAL_DEV)) { - ext4_msg(sb, KERN_ERR, "external journal has " - "bad superblock"); - brelse(bh); - goto out_bdev; + ext4_msg(sb, KERN_ERR, "external journal has bad superblock"); + errno = -EFSCORRUPTED; + goto out_bh; } if ((le32_to_cpu(es->s_feature_ro_compat) & EXT4_FEATURE_RO_COMPAT_METADATA_CSUM) && es->s_checksum != ext4_superblock_csum(sb, es)) { - ext4_msg(sb, KERN_ERR, "external journal has " - "corrupt superblock"); - brelse(bh); - goto out_bdev; + ext4_msg(sb, KERN_ERR, "external journal has corrupt superblock"); + errno = -EFSCORRUPTED; + goto out_bh; } if (memcmp(EXT4_SB(sb)->s_es->s_journal_uuid, es->s_uuid, 16)) { ext4_msg(sb, KERN_ERR, "journal UUID does not match"); - brelse(bh); - goto out_bdev; + errno = -EFSCORRUPTED; + goto out_bh; } - len = ext4_blocks_count(es); - start = sb_block + 1; - brelse(bh); /* we're done with the superblock */ + *j_start = sb_block + 1; + *j_len = ext4_blocks_count(es); + brelse(bh); + return bdev; + +out_bh: + brelse(bh); +out_bdev: + blkdev_put(bdev, sb); + return ERR_PTR(errno); +} - journal = jbd2_journal_init_dev(bdev, sb->s_bdev, - start, len, blocksize); - if (!journal) { +static journal_t *ext4_open_dev_journal(struct super_block *sb, + dev_t j_dev) +{ + journal_t *journal; + ext4_fsblk_t j_start; + ext4_fsblk_t j_len; + struct block_device *journal_bdev; + int errno = 0; + + journal_bdev = ext4_get_journal_blkdev(sb, j_dev, &j_start, &j_len); + if (IS_ERR(journal_bdev)) + return ERR_CAST(journal_bdev); + + journal = jbd2_journal_init_dev(journal_bdev, sb->s_bdev, j_start, + j_len, sb->s_blocksize); + if (IS_ERR(journal)) { ext4_msg(sb, KERN_ERR, "failed to create device journal"); + errno = PTR_ERR(journal); goto out_bdev; } - journal->j_private = sb; - if (ext4_read_bh_lock(journal->j_sb_buffer, REQ_META | REQ_PRIO, true)) { - ext4_msg(sb, KERN_ERR, "I/O error on journal device"); - goto out_journal; - } if (be32_to_cpu(journal->j_superblock->s_nr_users) != 1) { ext4_msg(sb, KERN_ERR, "External journal has more than one " "user (unsupported) - %d", be32_to_cpu(journal->j_superblock->s_nr_users)); + errno = -EINVAL; goto out_journal; } - EXT4_SB(sb)->s_journal_bdev = bdev; + journal->j_private = sb; + EXT4_SB(sb)->s_journal_bdev = journal_bdev; ext4_init_journal_params(sb, journal); return journal; out_journal: jbd2_journal_destroy(journal); out_bdev: - blkdev_put(bdev, sb); - return NULL; + blkdev_put(journal_bdev, sb); + return ERR_PTR(errno); } static int ext4_load_journal(struct super_block *sb, @@ -5961,13 +5989,13 @@ static int ext4_load_journal(struct super_block *sb, } if (journal_inum) { - journal = ext4_get_journal(sb, journal_inum); - if (!journal) - return -EINVAL; + journal = ext4_open_inode_journal(sb, journal_inum); + if (IS_ERR(journal)) + return PTR_ERR(journal); } else { - journal = ext4_get_dev_journal(sb, journal_dev); - if (!journal) - return -EINVAL; + journal = ext4_open_dev_journal(sb, journal_dev); + if (IS_ERR(journal)) + return PTR_ERR(journal); } journal_dev_ro = bdev_read_only(journal->j_dev); @@ -6084,7 +6112,7 @@ static void ext4_update_super(struct super_block *sb) * the clock is set in the future, and this will cause e2fsck * to complain and force a full file system check. */ - if (!(sb->s_flags & SB_RDONLY)) + if (!sb_rdonly(sb)) ext4_update_tstamp(es, s_wtime); es->s_kbytes_written = cpu_to_le64(sbi->s_kbytes_written + @@ -6282,13 +6310,7 @@ static int ext4_clear_journal_err(struct super_block *sb, */ int ext4_force_commit(struct super_block *sb) { - journal_t *journal; - - if (sb_rdonly(sb)) - return 0; - - journal = EXT4_SB(sb)->s_journal; - return ext4_journal_force_commit(journal); + return ext4_journal_force_commit(EXT4_SB(sb)->s_journal); } static int ext4_sync_fs(struct super_block *sb, int wait) @@ -6298,7 +6320,7 @@ static int ext4_sync_fs(struct super_block *sb, int wait) bool needs_barrier = false; struct ext4_sb_info *sbi = EXT4_SB(sb); - if (unlikely(ext4_forced_shutdown(sbi))) + if (unlikely(ext4_forced_shutdown(sb))) return 0; trace_ext4_sync_fs(sb, wait); @@ -6347,12 +6369,7 @@ static int ext4_sync_fs(struct super_block *sb, int wait) static int ext4_freeze(struct super_block *sb) { int error = 0; - journal_t *journal; - - if (sb_rdonly(sb)) - return 0; - - journal = EXT4_SB(sb)->s_journal; + journal_t *journal = EXT4_SB(sb)->s_journal; if (journal) { /* Now we set up the journal barrier. */ @@ -6386,7 +6403,7 @@ out: */ static int ext4_unfreeze(struct super_block *sb) { - if (sb_rdonly(sb) || ext4_forced_shutdown(EXT4_SB(sb))) + if (ext4_forced_shutdown(sb)) return 0; if (EXT4_SB(sb)->s_journal) { @@ -6502,7 +6519,7 @@ static int __ext4_remount(struct fs_context *fc, struct super_block *sb) goto restore_opts; } - if (ext4_test_mount_flag(sb, EXT4_MF_FS_ABORTED)) + if (test_opt2(sb, ABORT)) ext4_abort(sb, ESHUTDOWN, "Abort forced by user"); sb->s_flags = (sb->s_flags & ~SB_POSIXACL) | @@ -6516,10 +6533,10 @@ static int __ext4_remount(struct fs_context *fc, struct super_block *sb) } /* Flush outstanding errors before changing fs state */ - flush_work(&sbi->s_error_work); + flush_work(&sbi->s_sb_upd_work); if ((bool)(fc->sb_flags & SB_RDONLY) != sb_rdonly(sb)) { - if (ext4_test_mount_flag(sb, EXT4_MF_FS_ABORTED)) { + if (ext4_forced_shutdown(sb)) { err = -EROFS; goto restore_opts; } @@ -6680,7 +6697,7 @@ restore_opts: * If there was a failing r/w to ro transition, we may need to * re-enable quota */ - if ((sb->s_flags & SB_RDONLY) && !(old_sb_flags & SB_RDONLY) && + if (sb_rdonly(sb) && !(old_sb_flags & SB_RDONLY) && sb_any_quota_suspended(sb)) dquot_resume(sb, -1); sb->s_flags = old_sb_flags; @@ -7089,6 +7106,13 @@ static int ext4_quota_off(struct super_block *sb, int type) err = dquot_quota_off(sb, type); if (err || ext4_has_feature_quota(sb)) goto out_put; + /* + * When the filesystem was remounted read-only first, we cannot cleanup + * inode flags here. Bad luck but people should be using QUOTA feature + * these days anyway. + */ + if (sb_rdonly(sb)) + goto out_put; inode_lock(inode); /* @@ -7103,7 +7127,7 @@ static int ext4_quota_off(struct super_block *sb, int type) } EXT4_I(inode)->i_flags &= ~(EXT4_NOATIME_FL | EXT4_IMMUTABLE_FL); inode_set_flags(inode, 0, S_NOATIME | S_IMMUTABLE); - inode->i_mtime = inode->i_ctime = current_time(inode); + inode->i_mtime = inode_set_ctime_current(inode); err = ext4_mark_inode_dirty(handle, inode); ext4_journal_stop(handle); out_unlock: @@ -7273,13 +7297,24 @@ static inline int ext3_feature_set_ok(struct super_block *sb) return 1; } +static void ext4_kill_sb(struct super_block *sb) +{ + struct ext4_sb_info *sbi = EXT4_SB(sb); + struct block_device *journal_bdev = sbi ? sbi->s_journal_bdev : NULL; + + kill_block_super(sb); + + if (journal_bdev) + blkdev_put(journal_bdev, sb); +} + static struct file_system_type ext4_fs_type = { .owner = THIS_MODULE, .name = "ext4", .init_fs_context = ext4_init_fs_context, .parameters = ext4_param_specs, - .kill_sb = kill_block_super, - .fs_flags = FS_REQUIRES_DEV | FS_ALLOW_IDMAP, + .kill_sb = ext4_kill_sb, + .fs_flags = FS_REQUIRES_DEV | FS_ALLOW_IDMAP | FS_MGTIME, }; MODULE_ALIAS_FS("ext4"); diff --git a/fs/ext4/xattr.c b/fs/ext4/xattr.c index 05151d61b00b..92ba28cebac6 100644 --- a/fs/ext4/xattr.c +++ b/fs/ext4/xattr.c @@ -356,13 +356,13 @@ ext4_xattr_inode_hash(struct ext4_sb_info *sbi, const void *buffer, size_t size) static u64 ext4_xattr_inode_get_ref(struct inode *ea_inode) { - return ((u64)ea_inode->i_ctime.tv_sec << 32) | + return ((u64) inode_get_ctime(ea_inode).tv_sec << 32) | (u32) inode_peek_iversion_raw(ea_inode); } static void ext4_xattr_inode_set_ref(struct inode *ea_inode, u64 ref_count) { - ea_inode->i_ctime.tv_sec = (u32)(ref_count >> 32); + inode_set_ctime(ea_inode, (u32)(ref_count >> 32), 0); inode_set_iversion_raw(ea_inode, ref_count & 0xffffffff); } @@ -701,7 +701,7 @@ ext4_xattr_get(struct inode *inode, int name_index, const char *name, { int error; - if (unlikely(ext4_forced_shutdown(EXT4_SB(inode->i_sb)))) + if (unlikely(ext4_forced_shutdown(inode->i_sb))) return -EIO; if (strlen(name) > 255) @@ -2473,7 +2473,7 @@ retry_inode: } if (!error) { ext4_xattr_update_super_block(handle, inode->i_sb); - inode->i_ctime = current_time(inode); + inode_set_ctime_current(inode); inode_inc_iversion(inode); if (!value) no_expand = 0; diff --git a/fs/f2fs/Kconfig b/fs/f2fs/Kconfig index 03ef087537c7..68a1e23e1557 100644 --- a/fs/f2fs/Kconfig +++ b/fs/f2fs/Kconfig @@ -2,6 +2,7 @@ config F2FS_FS tristate "F2FS filesystem support" depends on BLOCK + select BUFFER_HEAD select NLS select CRYPTO select CRYPTO_CRC32 diff --git a/fs/f2fs/checkpoint.c b/fs/f2fs/checkpoint.c index 8fd3b7f9fb88..b0597a539fc5 100644 --- a/fs/f2fs/checkpoint.c +++ b/fs/f2fs/checkpoint.c @@ -1701,9 +1701,9 @@ int f2fs_write_checkpoint(struct f2fs_sb_info *sbi, struct cp_control *cpc) } f2fs_restore_inmem_curseg(sbi); + stat_inc_cp_count(sbi); stop: unblock_operations(sbi); - stat_inc_cp_count(sbi->stat_info); if (cpc->reason & CP_RECOVERY) f2fs_notice(sbi, "checkpoint: version = %llx", ckpt_ver); diff --git a/fs/f2fs/compress.c b/fs/f2fs/compress.c index 236d890f560b..d820801f473e 100644 --- a/fs/f2fs/compress.c +++ b/fs/f2fs/compress.c @@ -649,13 +649,8 @@ static int f2fs_compress_pages(struct compress_ctx *cc) goto destroy_compress_ctx; } - for (i = 0; i < cc->nr_cpages; i++) { + for (i = 0; i < cc->nr_cpages; i++) cc->cpages[i] = f2fs_compress_alloc_page(); - if (!cc->cpages[i]) { - ret = -ENOMEM; - goto out_free_cpages; - } - } cc->rbuf = f2fs_vmap(cc->rpages, cc->cluster_size); if (!cc->rbuf) { @@ -1045,7 +1040,7 @@ static int prepare_compress_overwrite(struct compress_ctx *cc, struct address_space *mapping = cc->inode->i_mapping; struct page *page; sector_t last_block_in_bio; - unsigned fgp_flag = FGP_LOCK | FGP_WRITE | FGP_CREAT; + fgf_t fgp_flag = FGP_LOCK | FGP_WRITE | FGP_CREAT; pgoff_t start_idx = start_idx_of_cluster(cc); int i, ret; @@ -1574,8 +1569,6 @@ static int f2fs_prepare_decomp_mem(struct decompress_io_ctx *dic, } dic->tpages[i] = f2fs_compress_alloc_page(); - if (!dic->tpages[i]) - return -ENOMEM; } dic->rbuf = f2fs_vmap(dic->tpages, dic->cluster_size); @@ -1656,11 +1649,6 @@ struct decompress_io_ctx *f2fs_alloc_dic(struct compress_ctx *cc) struct page *page; page = f2fs_compress_alloc_page(); - if (!page) { - ret = -ENOMEM; - goto out_free; - } - f2fs_set_compressed_page(page, cc->inode, start_idx + i + 1, dic); dic->cpages[i] = page; diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c index 5882afe71d82..916e317ac925 100644 --- a/fs/f2fs/data.c +++ b/fs/f2fs/data.c @@ -1167,6 +1167,9 @@ static int f2fs_submit_page_read(struct inode *inode, struct page *page, f2fs_wait_on_block_writeback(inode, blkaddr); if (bio_add_page(bio, page, PAGE_SIZE, 0) < PAGE_SIZE) { + iostat_update_and_unbind_ctx(bio); + if (bio->bi_private) + mempool_free(bio->bi_private, bio_post_read_ctx_pool); bio_put(bio); return -EFAULT; } @@ -1389,18 +1392,14 @@ struct page *f2fs_get_lock_data_page(struct inode *inode, pgoff_t index, { struct address_space *mapping = inode->i_mapping; struct page *page; -repeat: + page = f2fs_get_read_data_page(inode, index, 0, for_write, NULL); if (IS_ERR(page)) return page; /* wait for read completion */ lock_page(page); - if (unlikely(page->mapping != mapping)) { - f2fs_put_page(page, 1); - goto repeat; - } - if (unlikely(!PageUptodate(page))) { + if (unlikely(page->mapping != mapping || !PageUptodate(page))) { f2fs_put_page(page, 1); return ERR_PTR(-EIO); } @@ -3236,8 +3235,7 @@ result: } goto next; } - done_index = folio->index + - folio_nr_pages(folio); + done_index = folio_next_index(folio); done = 1; break; } diff --git a/fs/f2fs/debug.c b/fs/f2fs/debug.c index 61c35b59126e..fdbf994f1271 100644 --- a/fs/f2fs/debug.c +++ b/fs/f2fs/debug.c @@ -215,6 +215,9 @@ static void update_general_status(struct f2fs_sb_info *sbi) si->valid_blks[type] += blks; } + for (i = 0; i < MAX_CALL_TYPE; i++) + si->cp_call_count[i] = atomic_read(&sbi->cp_call_count[i]); + for (i = 0; i < 2; i++) { si->segment_count[i] = sbi->segment_count[i]; si->block_count[i] = sbi->block_count[i]; @@ -497,7 +500,9 @@ static int stat_show(struct seq_file *s, void *v) seq_printf(s, " - Prefree: %d\n - Free: %d (%d)\n\n", si->prefree_count, si->free_segs, si->free_secs); seq_printf(s, "CP calls: %d (BG: %d)\n", - si->cp_count, si->bg_cp_count); + si->cp_call_count[TOTAL_CALL], + si->cp_call_count[BACKGROUND]); + seq_printf(s, "CP count: %d\n", si->cp_count); seq_printf(s, " - cp blocks : %u\n", si->meta_count[META_CP]); seq_printf(s, " - sit blocks : %u\n", si->meta_count[META_SIT]); @@ -511,12 +516,24 @@ static int stat_show(struct seq_file *s, void *v) seq_printf(s, " - Total : %4d\n", si->nr_total_ckpt); seq_printf(s, " - Cur time : %4d(ms)\n", si->cur_ckpt_time); seq_printf(s, " - Peak time : %4d(ms)\n", si->peak_ckpt_time); - seq_printf(s, "GC calls: %d (BG: %d)\n", - si->call_count, si->bg_gc); - seq_printf(s, " - data segments : %d (%d)\n", - si->data_segs, si->bg_data_segs); - seq_printf(s, " - node segments : %d (%d)\n", - si->node_segs, si->bg_node_segs); + seq_printf(s, "GC calls: %d (gc_thread: %d)\n", + si->gc_call_count[BACKGROUND] + + si->gc_call_count[FOREGROUND], + si->gc_call_count[BACKGROUND]); + if (__is_large_section(sbi)) { + seq_printf(s, " - data sections : %d (BG: %d)\n", + si->gc_secs[DATA][BG_GC] + si->gc_secs[DATA][FG_GC], + si->gc_secs[DATA][BG_GC]); + seq_printf(s, " - node sections : %d (BG: %d)\n", + si->gc_secs[NODE][BG_GC] + si->gc_secs[NODE][FG_GC], + si->gc_secs[NODE][BG_GC]); + } + seq_printf(s, " - data segments : %d (BG: %d)\n", + si->gc_segs[DATA][BG_GC] + si->gc_segs[DATA][FG_GC], + si->gc_segs[DATA][BG_GC]); + seq_printf(s, " - node segments : %d (BG: %d)\n", + si->gc_segs[NODE][BG_GC] + si->gc_segs[NODE][FG_GC], + si->gc_segs[NODE][BG_GC]); seq_puts(s, " - Reclaimed segs :\n"); seq_printf(s, " - Normal : %d\n", sbi->gc_reclaimed_segs[GC_NORMAL]); seq_printf(s, " - Idle CB : %d\n", sbi->gc_reclaimed_segs[GC_IDLE_CB]); @@ -687,6 +704,8 @@ int f2fs_build_stats(struct f2fs_sb_info *sbi) atomic_set(&sbi->inplace_count, 0); for (i = META_CP; i < META_MAX; i++) atomic_set(&sbi->meta_count[i], 0); + for (i = 0; i < MAX_CALL_TYPE; i++) + atomic_set(&sbi->cp_call_count[i], 0); atomic_set(&sbi->max_aw_cnt, 0); diff --git a/fs/f2fs/dir.c b/fs/f2fs/dir.c index d635c58cf5a3..8aa29fe2e87b 100644 --- a/fs/f2fs/dir.c +++ b/fs/f2fs/dir.c @@ -455,7 +455,7 @@ void f2fs_set_link(struct inode *dir, struct f2fs_dir_entry *de, de->file_type = fs_umode_to_ftype(inode->i_mode); set_page_dirty(page); - dir->i_mtime = dir->i_ctime = current_time(dir); + dir->i_mtime = inode_set_ctime_current(dir); f2fs_mark_inode_dirty_sync(dir, false); f2fs_put_page(page, 1); } @@ -609,7 +609,7 @@ void f2fs_update_parent_metadata(struct inode *dir, struct inode *inode, f2fs_i_links_write(dir, true); clear_inode_flag(inode, FI_NEW_INODE); } - dir->i_mtime = dir->i_ctime = current_time(dir); + dir->i_mtime = inode_set_ctime_current(dir); f2fs_mark_inode_dirty_sync(dir, false); if (F2FS_I(dir)->i_current_depth != current_depth) @@ -858,7 +858,7 @@ void f2fs_drop_nlink(struct inode *dir, struct inode *inode) if (S_ISDIR(inode->i_mode)) f2fs_i_links_write(dir, false); - inode->i_ctime = current_time(inode); + inode_set_ctime_current(inode); f2fs_i_links_write(inode, false); if (S_ISDIR(inode->i_mode)) { @@ -919,7 +919,7 @@ void f2fs_delete_entry(struct f2fs_dir_entry *dentry, struct page *page, } f2fs_put_page(page, 1); - dir->i_ctime = dir->i_mtime = current_time(dir); + dir->i_mtime = inode_set_ctime_current(dir); f2fs_mark_inode_dirty_sync(dir, false); if (inode) diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h index c7cb2177b252..6d688e42d89c 100644 --- a/fs/f2fs/f2fs.h +++ b/fs/f2fs/f2fs.h @@ -1383,6 +1383,13 @@ enum errors_option { MOUNT_ERRORS_PANIC, /* panic on errors */ }; +enum { + BACKGROUND, + FOREGROUND, + MAX_CALL_TYPE, + TOTAL_CALL = FOREGROUND, +}; + static inline int f2fs_test_bit(unsigned int nr, char *addr); static inline void f2fs_set_bit(unsigned int nr, char *addr); static inline void f2fs_clear_bit(unsigned int nr, char *addr); @@ -1695,6 +1702,7 @@ struct f2fs_sb_info { unsigned int io_skip_bggc; /* skip background gc for in-flight IO */ unsigned int other_skip_bggc; /* skip background gc for other reasons */ unsigned int ndirty_inode[NR_INODE_TYPE]; /* # of dirty inodes */ + atomic_t cp_call_count[MAX_CALL_TYPE]; /* # of cp call */ #endif spinlock_t stat_lock; /* lock for stat operations */ @@ -2114,15 +2122,6 @@ static inline int f2fs_down_read_trylock(struct f2fs_rwsem *sem) return down_read_trylock(&sem->internal_rwsem); } -#ifdef CONFIG_DEBUG_LOCK_ALLOC -static inline void f2fs_down_read_nested(struct f2fs_rwsem *sem, int subclass) -{ - down_read_nested(&sem->internal_rwsem, subclass); -} -#else -#define f2fs_down_read_nested(sem, subclass) f2fs_down_read(sem) -#endif - static inline void f2fs_up_read(struct f2fs_rwsem *sem) { up_read(&sem->internal_rwsem); @@ -2133,6 +2132,21 @@ static inline void f2fs_down_write(struct f2fs_rwsem *sem) down_write(&sem->internal_rwsem); } +#ifdef CONFIG_DEBUG_LOCK_ALLOC +static inline void f2fs_down_read_nested(struct f2fs_rwsem *sem, int subclass) +{ + down_read_nested(&sem->internal_rwsem, subclass); +} + +static inline void f2fs_down_write_nested(struct f2fs_rwsem *sem, int subclass) +{ + down_write_nested(&sem->internal_rwsem, subclass); +} +#else +#define f2fs_down_read_nested(sem, subclass) f2fs_down_read(sem) +#define f2fs_down_write_nested(sem, subclass) f2fs_down_write(sem) +#endif + static inline int f2fs_down_write_trylock(struct f2fs_rwsem *sem) { return down_write_trylock(&sem->internal_rwsem); @@ -2736,7 +2750,7 @@ static inline struct page *f2fs_grab_cache_page(struct address_space *mapping, static inline struct page *f2fs_pagecache_get_page( struct address_space *mapping, pgoff_t index, - int fgp_flags, gfp_t gfp_mask) + fgf_t fgp_flags, gfp_t gfp_mask) { if (time_to_inject(F2FS_M_SB(mapping), FAULT_PAGE_GET)) return NULL; @@ -3303,9 +3317,11 @@ static inline void clear_file(struct inode *inode, int type) static inline bool f2fs_is_time_consistent(struct inode *inode) { + struct timespec64 ctime = inode_get_ctime(inode); + if (!timespec64_equal(F2FS_I(inode)->i_disk_time, &inode->i_atime)) return false; - if (!timespec64_equal(F2FS_I(inode)->i_disk_time + 1, &inode->i_ctime)) + if (!timespec64_equal(F2FS_I(inode)->i_disk_time + 1, &ctime)) return false; if (!timespec64_equal(F2FS_I(inode)->i_disk_time + 2, &inode->i_mtime)) return false; @@ -3885,7 +3901,7 @@ struct f2fs_stat_info { int nats, dirty_nats, sits, dirty_sits; int free_nids, avail_nids, alloc_nids; int total_count, utilization; - int bg_gc, nr_wb_cp_data, nr_wb_data; + int nr_wb_cp_data, nr_wb_data; int nr_rd_data, nr_rd_node, nr_rd_meta; int nr_dio_read, nr_dio_write; unsigned int io_skip_bggc, other_skip_bggc; @@ -3905,9 +3921,11 @@ struct f2fs_stat_info { int rsvd_segs, overp_segs; int dirty_count, node_pages, meta_pages, compress_pages; int compress_page_hit; - int prefree_count, call_count, cp_count, bg_cp_count; - int tot_segs, node_segs, data_segs, free_segs, free_secs; - int bg_node_segs, bg_data_segs; + int prefree_count, free_segs, free_secs; + int cp_call_count[MAX_CALL_TYPE], cp_count; + int gc_call_count[MAX_CALL_TYPE]; + int gc_segs[2][2]; + int gc_secs[2][2]; int tot_blks, data_blks, node_blks; int bg_data_blks, bg_node_blks; int curseg[NR_CURSEG_TYPE]; @@ -3929,10 +3947,9 @@ static inline struct f2fs_stat_info *F2FS_STAT(struct f2fs_sb_info *sbi) return (struct f2fs_stat_info *)sbi->stat_info; } -#define stat_inc_cp_count(si) ((si)->cp_count++) -#define stat_inc_bg_cp_count(si) ((si)->bg_cp_count++) -#define stat_inc_call_count(si) ((si)->call_count++) -#define stat_inc_bggc_count(si) ((si)->bg_gc++) +#define stat_inc_cp_call_count(sbi, foreground) \ + atomic_inc(&sbi->cp_call_count[(foreground)]) +#define stat_inc_cp_count(si) (F2FS_STAT(sbi)->cp_count++) #define stat_io_skip_bggc_count(sbi) ((sbi)->io_skip_bggc++) #define stat_other_skip_bggc_count(sbi) ((sbi)->other_skip_bggc++) #define stat_inc_dirty_inode(sbi, type) ((sbi)->ndirty_inode[type]++) @@ -4017,18 +4034,12 @@ static inline struct f2fs_stat_info *F2FS_STAT(struct f2fs_sb_info *sbi) if (cur > max) \ atomic_set(&F2FS_I_SB(inode)->max_aw_cnt, cur); \ } while (0) -#define stat_inc_seg_count(sbi, type, gc_type) \ - do { \ - struct f2fs_stat_info *si = F2FS_STAT(sbi); \ - si->tot_segs++; \ - if ((type) == SUM_TYPE_DATA) { \ - si->data_segs++; \ - si->bg_data_segs += (gc_type == BG_GC) ? 1 : 0; \ - } else { \ - si->node_segs++; \ - si->bg_node_segs += (gc_type == BG_GC) ? 1 : 0; \ - } \ - } while (0) +#define stat_inc_gc_call_count(sbi, foreground) \ + (F2FS_STAT(sbi)->gc_call_count[(foreground)]++) +#define stat_inc_gc_sec_count(sbi, type, gc_type) \ + (F2FS_STAT(sbi)->gc_secs[(type)][(gc_type)]++) +#define stat_inc_gc_seg_count(sbi, type, gc_type) \ + (F2FS_STAT(sbi)->gc_segs[(type)][(gc_type)]++) #define stat_inc_tot_blk_count(si, blks) \ ((si)->tot_blks += (blks)) @@ -4055,10 +4066,8 @@ void __init f2fs_create_root_stats(void); void f2fs_destroy_root_stats(void); void f2fs_update_sit_info(struct f2fs_sb_info *sbi); #else -#define stat_inc_cp_count(si) do { } while (0) -#define stat_inc_bg_cp_count(si) do { } while (0) -#define stat_inc_call_count(si) do { } while (0) -#define stat_inc_bggc_count(si) do { } while (0) +#define stat_inc_cp_call_count(sbi, foreground) do { } while (0) +#define stat_inc_cp_count(sbi) do { } while (0) #define stat_io_skip_bggc_count(sbi) do { } while (0) #define stat_other_skip_bggc_count(sbi) do { } while (0) #define stat_inc_dirty_inode(sbi, type) do { } while (0) @@ -4086,7 +4095,9 @@ void f2fs_update_sit_info(struct f2fs_sb_info *sbi); #define stat_inc_seg_type(sbi, curseg) do { } while (0) #define stat_inc_block_count(sbi, curseg) do { } while (0) #define stat_inc_inplace_blocks(sbi) do { } while (0) -#define stat_inc_seg_count(sbi, type, gc_type) do { } while (0) +#define stat_inc_gc_call_count(sbi, foreground) do { } while (0) +#define stat_inc_gc_sec_count(sbi, type, gc_type) do { } while (0) +#define stat_inc_gc_seg_count(sbi, type, gc_type) do { } while (0) #define stat_inc_tot_blk_count(si, blks) do { } while (0) #define stat_inc_data_blk_count(sbi, blks, gc_type) do { } while (0) #define stat_inc_node_blk_count(sbi, blks, gc_type) do { } while (0) @@ -4423,6 +4434,22 @@ static inline bool f2fs_blkz_is_seq(struct f2fs_sb_info *sbi, int devi, } #endif +static inline int f2fs_bdev_index(struct f2fs_sb_info *sbi, + struct block_device *bdev) +{ + int i; + + if (!f2fs_is_multi_device(sbi)) + return 0; + + for (i = 0; i < sbi->s_ndevs; i++) + if (FDEV(i).bdev == bdev) + return i; + + WARN_ON(1); + return -1; +} + static inline bool f2fs_hw_should_discard(struct f2fs_sb_info *sbi) { return f2fs_sb_has_blkzoned(sbi); @@ -4483,7 +4510,8 @@ static inline bool f2fs_low_mem_mode(struct f2fs_sb_info *sbi) static inline bool f2fs_may_compress(struct inode *inode) { if (IS_SWAPFILE(inode) || f2fs_is_pinned_file(inode) || - f2fs_is_atomic_file(inode) || f2fs_has_inline_data(inode)) + f2fs_is_atomic_file(inode) || f2fs_has_inline_data(inode) || + f2fs_is_mmap_file(inode)) return false; return S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode); } diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c index 093039dee992..ca5904129b16 100644 --- a/fs/f2fs/file.c +++ b/fs/f2fs/file.c @@ -159,7 +159,7 @@ out_sem: sb_end_pagefault(inode->i_sb); err: - return block_page_mkwrite_return(err); + return vmf_fs_error(err); } static const struct vm_operations_struct f2fs_file_vm_ops = { @@ -526,7 +526,11 @@ static int f2fs_file_mmap(struct file *file, struct vm_area_struct *vma) file_accessed(file); vma->vm_ops = &f2fs_file_vm_ops; + + f2fs_down_read(&F2FS_I(inode)->i_sem); set_inode_flag(inode, FI_MMAP_FILE); + f2fs_up_read(&F2FS_I(inode)->i_sem); + return 0; } @@ -794,7 +798,7 @@ int f2fs_truncate(struct inode *inode) if (err) return err; - inode->i_mtime = inode->i_ctime = current_time(inode); + inode->i_mtime = inode_set_ctime_current(inode); f2fs_mark_inode_dirty_sync(inode, false); return 0; } @@ -882,7 +886,7 @@ int f2fs_getattr(struct mnt_idmap *idmap, const struct path *path, STATX_ATTR_NODUMP | STATX_ATTR_VERITY); - generic_fillattr(idmap, inode, stat); + generic_fillattr(idmap, request_mask, inode, stat); /* we need to show initial sectors used for inline_data/dentries */ if ((S_ISREG(inode->i_mode) && f2fs_has_inline_data(inode)) || @@ -905,7 +909,7 @@ static void __setattr_copy(struct mnt_idmap *idmap, if (ia_valid & ATTR_MTIME) inode->i_mtime = attr->ia_mtime; if (ia_valid & ATTR_CTIME) - inode->i_ctime = attr->ia_ctime; + inode_set_ctime_to_ts(inode, attr->ia_ctime); if (ia_valid & ATTR_MODE) { umode_t mode = attr->ia_mode; vfsgid_t vfsgid = i_gid_into_vfsgid(idmap, inode); @@ -1008,7 +1012,7 @@ int f2fs_setattr(struct mnt_idmap *idmap, struct dentry *dentry, return err; spin_lock(&F2FS_I(inode)->i_size_lock); - inode->i_mtime = inode->i_ctime = current_time(inode); + inode->i_mtime = inode_set_ctime_current(inode); F2FS_I(inode)->last_disk_size = i_size_read(inode); spin_unlock(&F2FS_I(inode)->i_size_lock); } @@ -1724,6 +1728,7 @@ next_alloc: if (has_not_enough_free_secs(sbi, 0, GET_SEC_FROM_SEG(sbi, overprovision_segments(sbi)))) { f2fs_down_write(&sbi->gc_lock); + stat_inc_gc_call_count(sbi, FOREGROUND); err = f2fs_gc(sbi, &gc_control); if (err && err != -ENODATA) goto out_err; @@ -1835,7 +1840,7 @@ static long f2fs_fallocate(struct file *file, int mode, } if (!ret) { - inode->i_mtime = inode->i_ctime = current_time(inode); + inode->i_mtime = inode_set_ctime_current(inode); f2fs_mark_inode_dirty_sync(inode, false); f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); } @@ -1919,12 +1924,19 @@ static int f2fs_setflags_common(struct inode *inode, u32 iflags, u32 mask) int err = f2fs_convert_inline_inode(inode); if (err) return err; - if (!f2fs_may_compress(inode)) - return -EINVAL; - if (S_ISREG(inode->i_mode) && F2FS_HAS_BLOCKS(inode)) + + f2fs_down_write(&F2FS_I(inode)->i_sem); + if (!f2fs_may_compress(inode) || + (S_ISREG(inode->i_mode) && + F2FS_HAS_BLOCKS(inode))) { + f2fs_up_write(&F2FS_I(inode)->i_sem); return -EINVAL; - if (set_compress_context(inode)) - return -EOPNOTSUPP; + } + err = set_compress_context(inode); + f2fs_up_write(&F2FS_I(inode)->i_sem); + + if (err) + return err; } } @@ -1937,7 +1949,7 @@ static int f2fs_setflags_common(struct inode *inode, u32 iflags, u32 mask) else clear_inode_flag(inode, FI_PROJ_INHERIT); - inode->i_ctime = current_time(inode); + inode_set_ctime_current(inode); f2fs_set_inode_flags(inode); f2fs_mark_inode_dirty_sync(inode, true); return 0; @@ -2465,6 +2477,7 @@ static int f2fs_ioc_gc(struct file *filp, unsigned long arg) gc_control.init_gc_type = sync ? FG_GC : BG_GC; gc_control.err_gc_skipped = sync; + stat_inc_gc_call_count(sbi, FOREGROUND); ret = f2fs_gc(sbi, &gc_control); out: mnt_drop_write_file(filp); @@ -2508,6 +2521,7 @@ do_more: } gc_control.victim_segno = GET_SEGNO(sbi, range->start); + stat_inc_gc_call_count(sbi, FOREGROUND); ret = f2fs_gc(sbi, &gc_control); if (ret) { if (ret == -EBUSY) @@ -2874,10 +2888,10 @@ out_src: if (ret) goto out_unlock; - src->i_mtime = src->i_ctime = current_time(src); + src->i_mtime = inode_set_ctime_current(src); f2fs_mark_inode_dirty_sync(src, false); if (src != dst) { - dst->i_mtime = dst->i_ctime = current_time(dst); + dst->i_mtime = inode_set_ctime_current(dst); f2fs_mark_inode_dirty_sync(dst, false); } f2fs_update_time(sbi, REQ_TIME); @@ -2990,6 +3004,7 @@ static int f2fs_ioc_flush_device(struct file *filp, unsigned long arg) sm->last_victim[ALLOC_NEXT] = end_segno + 1; gc_control.victim_segno = start_segno; + stat_inc_gc_call_count(sbi, FOREGROUND); ret = f2fs_gc(sbi, &gc_control); if (ret == -EAGAIN) ret = 0; @@ -3073,7 +3088,7 @@ static int f2fs_ioc_setproject(struct inode *inode, __u32 projid) goto out_unlock; fi->i_projid = kprojid; - inode->i_ctime = current_time(inode); + inode_set_ctime_current(inode); f2fs_mark_inode_dirty_sync(inode, true); out_unlock: f2fs_unlock_op(sbi); @@ -3511,7 +3526,7 @@ static int f2fs_release_compress_blocks(struct file *filp, unsigned long arg) } set_inode_flag(inode, FI_COMPRESS_RELEASED); - inode->i_ctime = current_time(inode); + inode_set_ctime_current(inode); f2fs_mark_inode_dirty_sync(inode, true); f2fs_down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]); @@ -3710,7 +3725,7 @@ static int f2fs_reserve_compress_blocks(struct file *filp, unsigned long arg) if (ret >= 0) { clear_inode_flag(inode, FI_COMPRESS_RELEASED); - inode->i_ctime = current_time(inode); + inode_set_ctime_current(inode); f2fs_mark_inode_dirty_sync(inode, true); } unlock_inode: @@ -3976,6 +3991,7 @@ static int f2fs_ioc_set_compress_option(struct file *filp, unsigned long arg) file_start_write(filp); inode_lock(inode); + f2fs_down_write(&F2FS_I(inode)->i_sem); if (f2fs_is_mmap_file(inode) || get_dirty_pages(inode)) { ret = -EBUSY; goto out; @@ -3995,6 +4011,7 @@ static int f2fs_ioc_set_compress_option(struct file *filp, unsigned long arg) f2fs_warn(sbi, "compression algorithm is successfully set, " "but current kernel doesn't support this algorithm."); out: + f2fs_up_write(&F2FS_I(inode)->i_sem); inode_unlock(inode); file_end_write(filp); @@ -4079,10 +4096,8 @@ static int f2fs_ioc_decompress_file(struct file *filp) last_idx = DIV_ROUND_UP(i_size_read(inode), PAGE_SIZE); count = last_idx - page_idx; - while (count) { - int len = min(cluster_size, count); - - ret = redirty_blocks(inode, page_idx, len); + while (count && count >= cluster_size) { + ret = redirty_blocks(inode, page_idx, cluster_size); if (ret < 0) break; @@ -4092,8 +4107,14 @@ static int f2fs_ioc_decompress_file(struct file *filp) break; } - count -= len; - page_idx += len; + count -= cluster_size; + page_idx += cluster_size; + + cond_resched(); + if (fatal_signal_pending(current)) { + ret = -EINTR; + break; + } } if (!ret) @@ -4153,10 +4174,8 @@ static int f2fs_ioc_compress_file(struct file *filp) last_idx = DIV_ROUND_UP(i_size_read(inode), PAGE_SIZE); count = last_idx - page_idx; - while (count) { - int len = min(cluster_size, count); - - ret = redirty_blocks(inode, page_idx, len); + while (count && count >= cluster_size) { + ret = redirty_blocks(inode, page_idx, cluster_size); if (ret < 0) break; @@ -4166,8 +4185,14 @@ static int f2fs_ioc_compress_file(struct file *filp) break; } - count -= len; - page_idx += len; + count -= cluster_size; + page_idx += cluster_size; + + cond_resched(); + if (fatal_signal_pending(current)) { + ret = -EINTR; + break; + } } if (!ret) @@ -4579,6 +4604,7 @@ static int f2fs_dio_write_end_io(struct kiocb *iocb, ssize_t size, int error, dec_page_count(sbi, F2FS_DIO_WRITE); if (error) return error; + f2fs_update_time(sbi, REQ_TIME); f2fs_update_iostat(sbi, NULL, APP_DIRECT_IO, size); return 0; } diff --git a/fs/f2fs/gc.c b/fs/f2fs/gc.c index 01effd3fcb6c..f550cdeaa663 100644 --- a/fs/f2fs/gc.c +++ b/fs/f2fs/gc.c @@ -121,8 +121,8 @@ static int gc_thread_func(void *data) else increase_sleep_time(gc_th, &wait_ms); do_gc: - if (!foreground) - stat_inc_bggc_count(sbi->stat_info); + stat_inc_gc_call_count(sbi, foreground ? + FOREGROUND : BACKGROUND); sync_mode = F2FS_OPTION(sbi).bggc_mode == BGGC_MODE_SYNC; @@ -1685,6 +1685,7 @@ static int do_garbage_collect(struct f2fs_sb_info *sbi, int seg_freed = 0, migrated = 0; unsigned char type = IS_DATASEG(get_seg_entry(sbi, segno)->type) ? SUM_TYPE_DATA : SUM_TYPE_NODE; + unsigned char data_type = (type == SUM_TYPE_DATA) ? DATA : NODE; int submitted = 0; if (__is_large_section(sbi)) @@ -1766,7 +1767,7 @@ static int do_garbage_collect(struct f2fs_sb_info *sbi, segno, gc_type, force_migrate); - stat_inc_seg_count(sbi, type, gc_type); + stat_inc_gc_seg_count(sbi, data_type, gc_type); sbi->gc_reclaimed_segs[sbi->gc_mode]++; migrated++; @@ -1783,12 +1784,12 @@ skip: } if (submitted) - f2fs_submit_merged_write(sbi, - (type == SUM_TYPE_NODE) ? NODE : DATA); + f2fs_submit_merged_write(sbi, data_type); blk_finish_plug(&plug); - stat_inc_call_count(sbi->stat_info); + if (migrated) + stat_inc_gc_sec_count(sbi, data_type, gc_type); return seg_freed; } @@ -1839,6 +1840,7 @@ gc_more: * secure free segments which doesn't need fggc any more. */ if (prefree_segments(sbi)) { + stat_inc_cp_call_count(sbi, TOTAL_CALL); ret = f2fs_write_checkpoint(sbi, &cpc); if (ret) goto stop; @@ -1887,6 +1889,7 @@ retry: round++; if (skipped_round > MAX_SKIP_GC_COUNT && skipped_round * 2 >= round) { + stat_inc_cp_call_count(sbi, TOTAL_CALL); ret = f2fs_write_checkpoint(sbi, &cpc); goto stop; } @@ -1902,6 +1905,7 @@ retry: */ if (free_sections(sbi) <= upper_secs + NR_GC_CHECKPOINT_SECS && prefree_segments(sbi)) { + stat_inc_cp_call_count(sbi, TOTAL_CALL); ret = f2fs_write_checkpoint(sbi, &cpc); if (ret) goto stop; @@ -2029,6 +2033,7 @@ static int free_segment_range(struct f2fs_sb_info *sbi, if (gc_only) goto out; + stat_inc_cp_call_count(sbi, TOTAL_CALL); err = f2fs_write_checkpoint(sbi, &cpc); if (err) goto out; @@ -2181,12 +2186,14 @@ out_drop_write: if (err) return err; - err = freeze_super(sbi->sb); + err = freeze_super(sbi->sb, FREEZE_HOLDER_USERSPACE); if (err) return err; if (f2fs_readonly(sbi->sb)) { - thaw_super(sbi->sb); + err = thaw_super(sbi->sb, FREEZE_HOLDER_USERSPACE); + if (err) + return err; return -EROFS; } @@ -2221,6 +2228,7 @@ out_drop_write: clear_sbi_flag(sbi, SBI_IS_RESIZEFS); set_sbi_flag(sbi, SBI_IS_DIRTY); + stat_inc_cp_call_count(sbi, TOTAL_CALL); err = f2fs_write_checkpoint(sbi, &cpc); if (err) { update_fs_metadata(sbi, secs); @@ -2240,6 +2248,6 @@ recover_out: out_err: f2fs_up_write(&sbi->cp_global_sem); f2fs_up_write(&sbi->gc_lock); - thaw_super(sbi->sb); + thaw_super(sbi->sb, FREEZE_HOLDER_USERSPACE); return err; } diff --git a/fs/f2fs/inline.c b/fs/f2fs/inline.c index 4638fee16a91..2fe25619ccb5 100644 --- a/fs/f2fs/inline.c +++ b/fs/f2fs/inline.c @@ -641,7 +641,8 @@ int f2fs_add_inline_entry(struct inode *dir, const struct f2fs_filename *fname, } if (inode) { - f2fs_down_write(&F2FS_I(inode)->i_sem); + f2fs_down_write_nested(&F2FS_I(inode)->i_sem, + SINGLE_DEPTH_NESTING); page = f2fs_init_inode_metadata(inode, dir, fname, ipage); if (IS_ERR(page)) { err = PTR_ERR(page); @@ -698,7 +699,7 @@ void f2fs_delete_inline_entry(struct f2fs_dir_entry *dentry, struct page *page, set_page_dirty(page); f2fs_put_page(page, 1); - dir->i_ctime = dir->i_mtime = current_time(dir); + dir->i_mtime = inode_set_ctime_current(dir); f2fs_mark_inode_dirty_sync(dir, false); if (inode) diff --git a/fs/f2fs/inode.c b/fs/f2fs/inode.c index 09e986b050c6..cde243840abd 100644 --- a/fs/f2fs/inode.c +++ b/fs/f2fs/inode.c @@ -214,7 +214,7 @@ static bool sanity_check_compress_inode(struct inode *inode, f2fs_warn(sbi, "%s: inode (ino=%lx) has unsupported compress algorithm: %u, run fsck to fix", __func__, inode->i_ino, ri->i_compress_algorithm); - goto err; + return false; } if (le64_to_cpu(ri->i_compr_blocks) > SECTOR_TO_BLOCK(inode->i_blocks)) { @@ -222,14 +222,14 @@ static bool sanity_check_compress_inode(struct inode *inode, "%s: inode (ino=%lx) has inconsistent i_compr_blocks:%llu, i_blocks:%llu, run fsck to fix", __func__, inode->i_ino, le64_to_cpu(ri->i_compr_blocks), SECTOR_TO_BLOCK(inode->i_blocks)); - goto err; + return false; } if (ri->i_log_cluster_size < MIN_COMPRESS_LOG_SIZE || ri->i_log_cluster_size > MAX_COMPRESS_LOG_SIZE) { f2fs_warn(sbi, "%s: inode (ino=%lx) has unsupported log cluster size: %u, run fsck to fix", __func__, inode->i_ino, ri->i_log_cluster_size); - goto err; + return false; } clevel = le16_to_cpu(ri->i_compress_flag) >> @@ -273,8 +273,6 @@ static bool sanity_check_compress_inode(struct inode *inode, err_level: f2fs_warn(sbi, "%s: inode (ino=%lx) has unsupported compress level: %u, run fsck to fix", __func__, inode->i_ino, clevel); -err: - set_sbi_flag(sbi, SBI_NEED_FSCK); return false; } @@ -287,14 +285,12 @@ static bool sanity_check_inode(struct inode *inode, struct page *node_page) iblocks = le64_to_cpu(F2FS_INODE(node_page)->i_blocks); if (!iblocks) { - set_sbi_flag(sbi, SBI_NEED_FSCK); f2fs_warn(sbi, "%s: corrupted inode i_blocks i_ino=%lx iblocks=%llu, run fsck to fix.", __func__, inode->i_ino, iblocks); return false; } if (ino_of_node(node_page) != nid_of_node(node_page)) { - set_sbi_flag(sbi, SBI_NEED_FSCK); f2fs_warn(sbi, "%s: corrupted inode footer i_ino=%lx, ino,nid: [%u, %u] run fsck to fix.", __func__, inode->i_ino, ino_of_node(node_page), nid_of_node(node_page)); @@ -303,7 +299,6 @@ static bool sanity_check_inode(struct inode *inode, struct page *node_page) if (f2fs_has_extra_attr(inode)) { if (!f2fs_sb_has_extra_attr(sbi)) { - set_sbi_flag(sbi, SBI_NEED_FSCK); f2fs_warn(sbi, "%s: inode (ino=%lx) is with extra_attr, but extra_attr feature is off", __func__, inode->i_ino); return false; @@ -311,7 +306,6 @@ static bool sanity_check_inode(struct inode *inode, struct page *node_page) if (fi->i_extra_isize > F2FS_TOTAL_EXTRA_ATTR_SIZE || fi->i_extra_isize < F2FS_MIN_EXTRA_ATTR_SIZE || fi->i_extra_isize % sizeof(__le32)) { - set_sbi_flag(sbi, SBI_NEED_FSCK); f2fs_warn(sbi, "%s: inode (ino=%lx) has corrupted i_extra_isize: %d, max: %zu", __func__, inode->i_ino, fi->i_extra_isize, F2FS_TOTAL_EXTRA_ATTR_SIZE); @@ -321,7 +315,6 @@ static bool sanity_check_inode(struct inode *inode, struct page *node_page) f2fs_has_inline_xattr(inode) && (!fi->i_inline_xattr_size || fi->i_inline_xattr_size > MAX_INLINE_XATTR_SIZE)) { - set_sbi_flag(sbi, SBI_NEED_FSCK); f2fs_warn(sbi, "%s: inode (ino=%lx) has corrupted i_inline_xattr_size: %d, max: %zu", __func__, inode->i_ino, fi->i_inline_xattr_size, MAX_INLINE_XATTR_SIZE); @@ -335,7 +328,6 @@ static bool sanity_check_inode(struct inode *inode, struct page *node_page) return false; } } else if (f2fs_sb_has_flexible_inline_xattr(sbi)) { - set_sbi_flag(sbi, SBI_NEED_FSCK); f2fs_warn(sbi, "%s: corrupted inode ino=%lx, run fsck to fix.", __func__, inode->i_ino); return false; @@ -343,31 +335,26 @@ static bool sanity_check_inode(struct inode *inode, struct page *node_page) if (!f2fs_sb_has_extra_attr(sbi)) { if (f2fs_sb_has_project_quota(sbi)) { - set_sbi_flag(sbi, SBI_NEED_FSCK); f2fs_warn(sbi, "%s: corrupted inode ino=%lx, wrong feature flag: %u, run fsck to fix.", __func__, inode->i_ino, F2FS_FEATURE_PRJQUOTA); return false; } if (f2fs_sb_has_inode_chksum(sbi)) { - set_sbi_flag(sbi, SBI_NEED_FSCK); f2fs_warn(sbi, "%s: corrupted inode ino=%lx, wrong feature flag: %u, run fsck to fix.", __func__, inode->i_ino, F2FS_FEATURE_INODE_CHKSUM); return false; } if (f2fs_sb_has_flexible_inline_xattr(sbi)) { - set_sbi_flag(sbi, SBI_NEED_FSCK); f2fs_warn(sbi, "%s: corrupted inode ino=%lx, wrong feature flag: %u, run fsck to fix.", __func__, inode->i_ino, F2FS_FEATURE_FLEXIBLE_INLINE_XATTR); return false; } if (f2fs_sb_has_inode_crtime(sbi)) { - set_sbi_flag(sbi, SBI_NEED_FSCK); f2fs_warn(sbi, "%s: corrupted inode ino=%lx, wrong feature flag: %u, run fsck to fix.", __func__, inode->i_ino, F2FS_FEATURE_INODE_CRTIME); return false; } if (f2fs_sb_has_compression(sbi)) { - set_sbi_flag(sbi, SBI_NEED_FSCK); f2fs_warn(sbi, "%s: corrupted inode ino=%lx, wrong feature flag: %u, run fsck to fix.", __func__, inode->i_ino, F2FS_FEATURE_COMPRESSION); return false; @@ -375,21 +362,18 @@ static bool sanity_check_inode(struct inode *inode, struct page *node_page) } if (f2fs_sanity_check_inline_data(inode)) { - set_sbi_flag(sbi, SBI_NEED_FSCK); f2fs_warn(sbi, "%s: inode (ino=%lx, mode=%u) should not have inline_data, run fsck to fix", __func__, inode->i_ino, inode->i_mode); return false; } if (f2fs_has_inline_dentry(inode) && !S_ISDIR(inode->i_mode)) { - set_sbi_flag(sbi, SBI_NEED_FSCK); f2fs_warn(sbi, "%s: inode (ino=%lx, mode=%u) should not have inline_dentry, run fsck to fix", __func__, inode->i_ino, inode->i_mode); return false; } if ((fi->i_flags & F2FS_CASEFOLD_FL) && !f2fs_sb_has_casefold(sbi)) { - set_sbi_flag(sbi, SBI_NEED_FSCK); f2fs_warn(sbi, "%s: inode (ino=%lx) has casefold flag, but casefold feature is off", __func__, inode->i_ino); return false; @@ -403,7 +387,7 @@ static void init_idisk_time(struct inode *inode) struct f2fs_inode_info *fi = F2FS_I(inode); fi->i_disk_time[0] = inode->i_atime; - fi->i_disk_time[1] = inode->i_ctime; + fi->i_disk_time[1] = inode_get_ctime(inode); fi->i_disk_time[2] = inode->i_mtime; } @@ -434,10 +418,10 @@ static int do_read_inode(struct inode *inode) inode->i_blocks = SECTOR_FROM_BLOCK(le64_to_cpu(ri->i_blocks) - 1); inode->i_atime.tv_sec = le64_to_cpu(ri->i_atime); - inode->i_ctime.tv_sec = le64_to_cpu(ri->i_ctime); + inode_set_ctime(inode, le64_to_cpu(ri->i_ctime), + le32_to_cpu(ri->i_ctime_nsec)); inode->i_mtime.tv_sec = le64_to_cpu(ri->i_mtime); inode->i_atime.tv_nsec = le32_to_cpu(ri->i_atime_nsec); - inode->i_ctime.tv_nsec = le32_to_cpu(ri->i_ctime_nsec); inode->i_mtime.tv_nsec = le32_to_cpu(ri->i_mtime_nsec); inode->i_generation = le32_to_cpu(ri->i_generation); if (S_ISDIR(inode->i_mode)) @@ -475,6 +459,13 @@ static int do_read_inode(struct inode *inode) fi->i_inline_xattr_size = 0; } + if (!sanity_check_inode(inode, node_page)) { + f2fs_put_page(node_page, 1); + set_sbi_flag(sbi, SBI_NEED_FSCK); + f2fs_handle_error(sbi, ERROR_CORRUPTED_INODE); + return -EFSCORRUPTED; + } + /* check data exist */ if (f2fs_has_inline_data(inode) && !f2fs_exist_data(inode)) __recover_inline_status(inode, node_page); @@ -544,12 +535,6 @@ static int do_read_inode(struct inode *inode) f2fs_init_read_extent_tree(inode, node_page); f2fs_init_age_extent_tree(inode); - if (!sanity_check_inode(inode, node_page)) { - f2fs_put_page(node_page, 1); - f2fs_handle_error(sbi, ERROR_CORRUPTED_INODE); - return -EFSCORRUPTED; - } - if (!sanity_check_extent_cache(inode)) { f2fs_put_page(node_page, 1); f2fs_handle_error(sbi, ERROR_CORRUPTED_INODE); @@ -714,10 +699,10 @@ void f2fs_update_inode(struct inode *inode, struct page *node_page) set_raw_inline(inode, ri); ri->i_atime = cpu_to_le64(inode->i_atime.tv_sec); - ri->i_ctime = cpu_to_le64(inode->i_ctime.tv_sec); + ri->i_ctime = cpu_to_le64(inode_get_ctime(inode).tv_sec); ri->i_mtime = cpu_to_le64(inode->i_mtime.tv_sec); ri->i_atime_nsec = cpu_to_le32(inode->i_atime.tv_nsec); - ri->i_ctime_nsec = cpu_to_le32(inode->i_ctime.tv_nsec); + ri->i_ctime_nsec = cpu_to_le32(inode_get_ctime(inode).tv_nsec); ri->i_mtime_nsec = cpu_to_le32(inode->i_mtime.tv_nsec); if (S_ISDIR(inode->i_mode)) ri->i_current_depth = diff --git a/fs/f2fs/namei.c b/fs/f2fs/namei.c index bee0568888da..193b22a2d6bf 100644 --- a/fs/f2fs/namei.c +++ b/fs/f2fs/namei.c @@ -243,7 +243,7 @@ static struct inode *f2fs_new_inode(struct mnt_idmap *idmap, inode->i_ino = ino; inode->i_blocks = 0; - inode->i_mtime = inode->i_atime = inode->i_ctime = current_time(inode); + inode->i_mtime = inode->i_atime = inode_set_ctime_current(inode); F2FS_I(inode)->i_crtime = inode->i_mtime; inode->i_generation = get_random_u32(); @@ -420,7 +420,7 @@ static int f2fs_link(struct dentry *old_dentry, struct inode *dir, f2fs_balance_fs(sbi, true); - inode->i_ctime = current_time(inode); + inode_set_ctime_current(inode); ihold(inode); set_inode_flag(inode, FI_INC_LINK); @@ -1052,7 +1052,7 @@ static int f2fs_rename(struct mnt_idmap *idmap, struct inode *old_dir, f2fs_set_link(new_dir, new_entry, new_page, old_inode); new_page = NULL; - new_inode->i_ctime = current_time(new_inode); + inode_set_ctime_current(new_inode); f2fs_down_write(&F2FS_I(new_inode)->i_sem); if (old_dir_entry) f2fs_i_links_write(new_inode, false); @@ -1086,7 +1086,7 @@ static int f2fs_rename(struct mnt_idmap *idmap, struct inode *old_dir, f2fs_i_pino_write(old_inode, new_dir->i_ino); f2fs_up_write(&F2FS_I(old_inode)->i_sem); - old_inode->i_ctime = current_time(old_inode); + inode_set_ctime_current(old_inode); f2fs_mark_inode_dirty_sync(old_inode, false); f2fs_delete_entry(old_entry, old_page, old_dir, NULL); @@ -1251,7 +1251,7 @@ static int f2fs_cross_rename(struct inode *old_dir, struct dentry *old_dentry, f2fs_i_pino_write(old_inode, new_dir->i_ino); f2fs_up_write(&F2FS_I(old_inode)->i_sem); - old_dir->i_ctime = current_time(old_dir); + inode_set_ctime_current(old_dir); if (old_nlink) { f2fs_down_write(&F2FS_I(old_dir)->i_sem); f2fs_i_links_write(old_dir, old_nlink > 0); @@ -1270,7 +1270,7 @@ static int f2fs_cross_rename(struct inode *old_dir, struct dentry *old_dentry, f2fs_i_pino_write(new_inode, old_dir->i_ino); f2fs_up_write(&F2FS_I(new_inode)->i_sem); - new_dir->i_ctime = current_time(new_dir); + inode_set_ctime_current(new_dir); if (new_nlink) { f2fs_down_write(&F2FS_I(new_dir)->i_sem); f2fs_i_links_write(new_dir, new_nlink > 0); diff --git a/fs/f2fs/recovery.c b/fs/f2fs/recovery.c index 4e7d4ceeb084..7be60df277a5 100644 --- a/fs/f2fs/recovery.c +++ b/fs/f2fs/recovery.c @@ -321,10 +321,10 @@ static int recover_inode(struct inode *inode, struct page *page) f2fs_i_size_write(inode, le64_to_cpu(raw->i_size)); inode->i_atime.tv_sec = le64_to_cpu(raw->i_atime); - inode->i_ctime.tv_sec = le64_to_cpu(raw->i_ctime); + inode_set_ctime(inode, le64_to_cpu(raw->i_ctime), + le32_to_cpu(raw->i_ctime_nsec)); inode->i_mtime.tv_sec = le64_to_cpu(raw->i_mtime); inode->i_atime.tv_nsec = le32_to_cpu(raw->i_atime_nsec); - inode->i_ctime.tv_nsec = le32_to_cpu(raw->i_ctime_nsec); inode->i_mtime.tv_nsec = le32_to_cpu(raw->i_mtime_nsec); F2FS_I(inode)->i_advise = raw->i_advise; @@ -924,6 +924,7 @@ skip: struct cp_control cpc = { .reason = CP_RECOVERY, }; + stat_inc_cp_call_count(sbi, TOTAL_CALL); err = f2fs_write_checkpoint(sbi, &cpc); } } diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c index 0457d620011f..d05b41608fc0 100644 --- a/fs/f2fs/segment.c +++ b/fs/f2fs/segment.c @@ -205,6 +205,8 @@ void f2fs_abort_atomic_write(struct inode *inode, bool clean) f2fs_i_size_write(inode, fi->original_i_size); fi->original_i_size = 0; } + /* avoid stale dirty inode during eviction */ + sync_inode_metadata(inode, 0); } static int __replace_atomic_write_block(struct inode *inode, pgoff_t index, @@ -433,6 +435,7 @@ void f2fs_balance_fs(struct f2fs_sb_info *sbi, bool need) .err_gc_skipped = false, .nr_free_secs = 1 }; f2fs_down_write(&sbi->gc_lock); + stat_inc_gc_call_count(sbi, FOREGROUND); f2fs_gc(sbi, &gc_control); } } @@ -510,8 +513,8 @@ do_sync: mutex_unlock(&sbi->flush_lock); } + stat_inc_cp_call_count(sbi, BACKGROUND); f2fs_sync_fs(sbi->sb, 1); - stat_inc_bg_cp_count(sbi->stat_info); } static int __submit_flush_wait(struct f2fs_sb_info *sbi, @@ -1258,8 +1261,16 @@ static int __submit_discard_cmd(struct f2fs_sb_info *sbi, #ifdef CONFIG_BLK_DEV_ZONED if (f2fs_sb_has_blkzoned(sbi) && bdev_is_zoned(bdev)) { - __submit_zone_reset_cmd(sbi, dc, flag, wait_list, issued); - return 0; + int devi = f2fs_bdev_index(sbi, bdev); + + if (devi < 0) + return -EINVAL; + + if (f2fs_blkz_is_seq(sbi, devi, dc->di.start)) { + __submit_zone_reset_cmd(sbi, dc, flag, + wait_list, issued); + return 0; + } } #endif @@ -1785,15 +1796,24 @@ static void f2fs_wait_discard_bio(struct f2fs_sb_info *sbi, block_t blkaddr) dc = __lookup_discard_cmd(sbi, blkaddr); #ifdef CONFIG_BLK_DEV_ZONED if (dc && f2fs_sb_has_blkzoned(sbi) && bdev_is_zoned(dc->bdev)) { - /* force submit zone reset */ - if (dc->state == D_PREP) - __submit_zone_reset_cmd(sbi, dc, REQ_SYNC, - &dcc->wait_list, NULL); - dc->ref++; - mutex_unlock(&dcc->cmd_lock); - /* wait zone reset */ - __wait_one_discard_bio(sbi, dc); - return; + int devi = f2fs_bdev_index(sbi, dc->bdev); + + if (devi < 0) { + mutex_unlock(&dcc->cmd_lock); + return; + } + + if (f2fs_blkz_is_seq(sbi, devi, dc->di.start)) { + /* force submit zone reset */ + if (dc->state == D_PREP) + __submit_zone_reset_cmd(sbi, dc, REQ_SYNC, + &dcc->wait_list, NULL); + dc->ref++; + mutex_unlock(&dcc->cmd_lock); + /* wait zone reset */ + __wait_one_discard_bio(sbi, dc); + return; + } } #endif if (dc) { @@ -2193,7 +2213,7 @@ find_next: len = next_pos - cur_pos; if (f2fs_sb_has_blkzoned(sbi) || - !force || len < cpc->trim_minlen) + (force && len < cpc->trim_minlen)) goto skip; f2fs_issue_discard(sbi, entry->start_blkaddr + cur_pos, @@ -3228,6 +3248,7 @@ int f2fs_trim_fs(struct f2fs_sb_info *sbi, struct fstrim_range *range) goto out; f2fs_down_write(&sbi->gc_lock); + stat_inc_cp_call_count(sbi, TOTAL_CALL); err = f2fs_write_checkpoint(sbi, &cpc); f2fs_up_write(&sbi->gc_lock); if (err) @@ -4846,17 +4867,17 @@ static int check_zone_write_pointer(struct f2fs_sb_info *sbi, { unsigned int wp_segno, wp_blkoff, zone_secno, zone_segno, segno; block_t zone_block, wp_block, last_valid_block; + unsigned int log_sectors_per_block = sbi->log_blocksize - SECTOR_SHIFT; int i, s, b, ret; struct seg_entry *se; if (zone->type != BLK_ZONE_TYPE_SEQWRITE_REQ) return 0; - wp_block = fdev->start_blk + (zone->wp >> sbi->log_sectors_per_block); + wp_block = fdev->start_blk + (zone->wp >> log_sectors_per_block); wp_segno = GET_SEGNO(sbi, wp_block); wp_blkoff = wp_block - START_BLOCK(sbi, wp_segno); - zone_block = fdev->start_blk + (zone->start >> - sbi->log_sectors_per_block); + zone_block = fdev->start_blk + (zone->start >> log_sectors_per_block); zone_segno = GET_SEGNO(sbi, zone_block); zone_secno = GET_SEC_FROM_SEG(sbi, zone_segno); @@ -4906,7 +4927,7 @@ static int check_zone_write_pointer(struct f2fs_sb_info *sbi, "pointer. Reset the write pointer: wp[0x%x,0x%x]", wp_segno, wp_blkoff); ret = __f2fs_issue_discard_zone(sbi, fdev->bdev, zone_block, - zone->len >> sbi->log_sectors_per_block); + zone->len >> log_sectors_per_block); if (ret) f2fs_err(sbi, "Discard zone failed: %s (errno=%d)", fdev->path, ret); @@ -4927,12 +4948,19 @@ static int check_zone_write_pointer(struct f2fs_sb_info *sbi, GET_BLKOFF_FROM_SEG0(sbi, last_valid_block), wp_segno, wp_blkoff); - ret = blkdev_issue_zeroout(fdev->bdev, zone->wp, - zone->len - (zone->wp - zone->start), - GFP_NOFS, 0); - if (ret) - f2fs_err(sbi, "Fill up zone failed: %s (errno=%d)", - fdev->path, ret); + ret = blkdev_zone_mgmt(fdev->bdev, REQ_OP_ZONE_FINISH, + zone->start, zone->len, GFP_NOFS); + if (ret == -EOPNOTSUPP) { + ret = blkdev_issue_zeroout(fdev->bdev, zone->wp, + zone->len - (zone->wp - zone->start), + GFP_NOFS, 0); + if (ret) + f2fs_err(sbi, "Fill up zone failed: %s (errno=%d)", + fdev->path, ret); + } else if (ret) { + f2fs_err(sbi, "Finishing zone failed: %s (errno=%d)", + fdev->path, ret); + } return ret; } @@ -4967,6 +4995,7 @@ static int fix_curseg_write_pointer(struct f2fs_sb_info *sbi, int type) struct blk_zone zone; unsigned int cs_section, wp_segno, wp_blkoff, wp_sector_off; block_t cs_zone_block, wp_block; + unsigned int log_sectors_per_block = sbi->log_blocksize - SECTOR_SHIFT; sector_t zone_sector; int err; @@ -4978,8 +5007,8 @@ static int fix_curseg_write_pointer(struct f2fs_sb_info *sbi, int type) return 0; /* report zone for the sector the curseg points to */ - zone_sector = (sector_t)(cs_zone_block - zbd->start_blk) << - sbi->log_sectors_per_block; + zone_sector = (sector_t)(cs_zone_block - zbd->start_blk) + << log_sectors_per_block; err = blkdev_report_zones(zbd->bdev, zone_sector, 1, report_one_zone_cb, &zone); if (err != 1) { @@ -4991,10 +5020,10 @@ static int fix_curseg_write_pointer(struct f2fs_sb_info *sbi, int type) if (zone.type != BLK_ZONE_TYPE_SEQWRITE_REQ) return 0; - wp_block = zbd->start_blk + (zone.wp >> sbi->log_sectors_per_block); + wp_block = zbd->start_blk + (zone.wp >> log_sectors_per_block); wp_segno = GET_SEGNO(sbi, wp_block); wp_blkoff = wp_block - START_BLOCK(sbi, wp_segno); - wp_sector_off = zone.wp & GENMASK(sbi->log_sectors_per_block - 1, 0); + wp_sector_off = zone.wp & GENMASK(log_sectors_per_block - 1, 0); if (cs->segno == wp_segno && cs->next_blkoff == wp_blkoff && wp_sector_off == 0) @@ -5021,8 +5050,8 @@ static int fix_curseg_write_pointer(struct f2fs_sb_info *sbi, int type) if (!zbd) return 0; - zone_sector = (sector_t)(cs_zone_block - zbd->start_blk) << - sbi->log_sectors_per_block; + zone_sector = (sector_t)(cs_zone_block - zbd->start_blk) + << log_sectors_per_block; err = blkdev_report_zones(zbd->bdev, zone_sector, 1, report_one_zone_cb, &zone); if (err != 1) { @@ -5040,7 +5069,7 @@ static int fix_curseg_write_pointer(struct f2fs_sb_info *sbi, int type) "Reset the zone: curseg[0x%x,0x%x]", type, cs->segno, cs->next_blkoff); err = __f2fs_issue_discard_zone(sbi, zbd->bdev, cs_zone_block, - zone.len >> sbi->log_sectors_per_block); + zone.len >> log_sectors_per_block); if (err) { f2fs_err(sbi, "Discard zone failed: %s (errno=%d)", zbd->path, err); diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c index ca31163da00a..a8c8232852bb 100644 --- a/fs/f2fs/super.c +++ b/fs/f2fs/super.c @@ -591,7 +591,7 @@ static int f2fs_set_lz4hc_level(struct f2fs_sb_info *sbi, const char *str) unsigned int level; if (strlen(str) == 3) { - F2FS_OPTION(sbi).compress_level = LZ4HC_DEFAULT_CLEVEL; + F2FS_OPTION(sbi).compress_level = 0; return 0; } @@ -862,11 +862,6 @@ static int parse_options(struct super_block *sb, char *options, bool is_remount) if (!name) return -ENOMEM; if (!strcmp(name, "adaptive")) { - if (f2fs_sb_has_blkzoned(sbi)) { - f2fs_warn(sbi, "adaptive mode is not allowed with zoned block device feature"); - kfree(name); - return -EINVAL; - } F2FS_OPTION(sbi).fs_mode = FS_MODE_ADAPTIVE; } else if (!strcmp(name, "lfs")) { F2FS_OPTION(sbi).fs_mode = FS_MODE_LFS; @@ -1331,6 +1326,11 @@ default_check: F2FS_OPTION(sbi).discard_unit = DISCARD_UNIT_SECTION; } + + if (F2FS_OPTION(sbi).fs_mode != FS_MODE_LFS) { + f2fs_info(sbi, "Only lfs mode is allowed with zoned block device feature"); + return -EINVAL; + } #else f2fs_err(sbi, "Zoned block device support is not enabled"); return -EINVAL; @@ -1561,7 +1561,8 @@ static void destroy_device_list(struct f2fs_sb_info *sbi) int i; for (i = 0; i < sbi->s_ndevs; i++) { - blkdev_put(FDEV(i).bdev, sbi->sb->s_type); + if (i > 0) + blkdev_put(FDEV(i).bdev, sbi->sb); #ifdef CONFIG_BLK_DEV_ZONED kvfree(FDEV(i).blkz_seq); #endif @@ -1600,6 +1601,7 @@ static void f2fs_put_super(struct super_block *sb) struct cp_control cpc = { .reason = CP_UMOUNT, }; + stat_inc_cp_call_count(sbi, TOTAL_CALL); err = f2fs_write_checkpoint(sbi, &cpc); } @@ -1609,6 +1611,7 @@ static void f2fs_put_super(struct super_block *sb) struct cp_control cpc = { .reason = CP_UMOUNT | CP_TRIMMED, }; + stat_inc_cp_call_count(sbi, TOTAL_CALL); err = f2fs_write_checkpoint(sbi, &cpc); } @@ -1705,8 +1708,10 @@ int f2fs_sync_fs(struct super_block *sb, int sync) if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING))) return -EAGAIN; - if (sync) + if (sync) { + stat_inc_cp_call_count(sbi, TOTAL_CALL); err = f2fs_issue_checkpoint(sbi); + } return err; } @@ -2205,6 +2210,7 @@ static int f2fs_disable_checkpoint(struct f2fs_sb_info *sbi) .nr_free_secs = 1 }; f2fs_down_write(&sbi->gc_lock); + stat_inc_gc_call_count(sbi, FOREGROUND); err = f2fs_gc(sbi, &gc_control); if (err == -ENODATA) { err = 0; @@ -2230,6 +2236,7 @@ skip_gc: f2fs_down_write(&sbi->gc_lock); cpc.reason = CP_PAUSE; set_sbi_flag(sbi, SBI_CP_DISABLED); + stat_inc_cp_call_count(sbi, TOTAL_CALL); err = f2fs_write_checkpoint(sbi, &cpc); if (err) goto out_unlock; @@ -2703,7 +2710,7 @@ retry: if (len == towrite) return err; - inode->i_mtime = inode->i_ctime = current_time(inode); + inode->i_mtime = inode_set_ctime_current(inode); f2fs_mark_inode_dirty_sync(inode, false); return len - towrite; } @@ -4190,16 +4197,12 @@ static int f2fs_scan_devices(struct f2fs_sb_info *sbi) sbi->aligned_blksize = true; for (i = 0; i < max_devices; i++) { - - if (i > 0 && !RDEV(i).path[0]) + if (i == 0) + FDEV(0).bdev = sbi->sb->s_bdev; + else if (!RDEV(i).path[0]) break; - if (max_devices == 1) { - /* Single zoned block device mount */ - FDEV(0).bdev = - blkdev_get_by_dev(sbi->sb->s_bdev->bd_dev, mode, - sbi->sb->s_type, NULL); - } else { + if (max_devices > 1) { /* Multi-device mount */ memcpy(FDEV(i).path, RDEV(i).path, MAX_PATH_LEN); FDEV(i).total_segments = @@ -4215,10 +4218,9 @@ static int f2fs_scan_devices(struct f2fs_sb_info *sbi) FDEV(i).end_blk = FDEV(i).start_blk + (FDEV(i).total_segments << sbi->log_blocks_per_seg) - 1; + FDEV(i).bdev = blkdev_get_by_path(FDEV(i).path, + mode, sbi->sb, NULL); } - FDEV(i).bdev = blkdev_get_by_path(FDEV(i).path, mode, - sbi->sb->s_type, - NULL); } if (IS_ERR(FDEV(i).bdev)) return PTR_ERR(FDEV(i).bdev); @@ -4871,6 +4873,7 @@ static void kill_f2fs_super(struct super_block *sb) struct cp_control cpc = { .reason = CP_UMOUNT, }; + stat_inc_cp_call_count(sbi, TOTAL_CALL); f2fs_write_checkpoint(sbi, &cpc); } diff --git a/fs/f2fs/sysfs.c b/fs/f2fs/sysfs.c index 48b7e0073884..417fae96890f 100644 --- a/fs/f2fs/sysfs.c +++ b/fs/f2fs/sysfs.c @@ -356,6 +356,16 @@ static ssize_t f2fs_sbi_show(struct f2fs_attr *a, if (!strcmp(a->attr.name, "revoked_atomic_block")) return sysfs_emit(buf, "%llu\n", sbi->revoked_atomic_block); +#ifdef CONFIG_F2FS_STAT_FS + if (!strcmp(a->attr.name, "cp_foreground_calls")) + return sysfs_emit(buf, "%d\n", + atomic_read(&sbi->cp_call_count[TOTAL_CALL]) - + atomic_read(&sbi->cp_call_count[BACKGROUND])); + if (!strcmp(a->attr.name, "cp_background_calls")) + return sysfs_emit(buf, "%d\n", + atomic_read(&sbi->cp_call_count[BACKGROUND])); +#endif + ui = (unsigned int *)(ptr + a->offset); return sysfs_emit(buf, "%u\n", *ui); @@ -972,10 +982,10 @@ F2FS_SBI_GENERAL_RO_ATTR(unusable_blocks_per_sec); /* STAT_INFO ATTR */ #ifdef CONFIG_F2FS_STAT_FS -STAT_INFO_RO_ATTR(cp_foreground_calls, cp_count); -STAT_INFO_RO_ATTR(cp_background_calls, bg_cp_count); -STAT_INFO_RO_ATTR(gc_foreground_calls, call_count); -STAT_INFO_RO_ATTR(gc_background_calls, bg_gc); +STAT_INFO_RO_ATTR(cp_foreground_calls, cp_call_count[FOREGROUND]); +STAT_INFO_RO_ATTR(cp_background_calls, cp_call_count[BACKGROUND]); +STAT_INFO_RO_ATTR(gc_foreground_calls, gc_call_count[FOREGROUND]); +STAT_INFO_RO_ATTR(gc_background_calls, gc_call_count[BACKGROUND]); #endif /* FAULT_INFO ATTR */ diff --git a/fs/f2fs/xattr.c b/fs/f2fs/xattr.c index 476b186b90a6..a657284faee3 100644 --- a/fs/f2fs/xattr.c +++ b/fs/f2fs/xattr.c @@ -757,17 +757,17 @@ static int __f2fs_setxattr(struct inode *inode, int index, if (index == F2FS_XATTR_INDEX_ENCRYPTION && !strcmp(name, F2FS_XATTR_NAME_ENCRYPTION_CONTEXT)) f2fs_set_encrypted_inode(inode); - f2fs_mark_inode_dirty_sync(inode, true); - if (!error && S_ISDIR(inode->i_mode)) + if (S_ISDIR(inode->i_mode)) set_sbi_flag(F2FS_I_SB(inode), SBI_NEED_CP); same: if (is_inode_flag_set(inode, FI_ACL_MODE)) { inode->i_mode = F2FS_I(inode)->i_acl_mode; - inode->i_ctime = current_time(inode); clear_inode_flag(inode, FI_ACL_MODE); } + inode_set_ctime_current(inode); + f2fs_mark_inode_dirty_sync(inode, true); exit: kfree(base_addr); return error; diff --git a/fs/fat/Kconfig b/fs/fat/Kconfig index afe83b4e7172..25fae1c83725 100644 --- a/fs/fat/Kconfig +++ b/fs/fat/Kconfig @@ -1,6 +1,7 @@ # SPDX-License-Identifier: GPL-2.0-only config FAT_FS tristate + select BUFFER_HEAD select NLS select LEGACY_DIRECT_IO help diff --git a/fs/fat/fat.h b/fs/fat/fat.h index e3b690b48e3e..66cf4778cf3b 100644 --- a/fs/fat/fat.h +++ b/fs/fat/fat.h @@ -460,8 +460,7 @@ extern struct timespec64 fat_truncate_mtime(const struct msdos_sb_info *sbi, const struct timespec64 *ts); extern int fat_truncate_time(struct inode *inode, struct timespec64 *now, int flags); -extern int fat_update_time(struct inode *inode, struct timespec64 *now, - int flags); +extern int fat_update_time(struct inode *inode, int flags); extern int fat_sync_bhs(struct buffer_head **bhs, int nr_bhs); int fat_cache_init(void); diff --git a/fs/fat/file.c b/fs/fat/file.c index 456477946dd9..e887e9ab7472 100644 --- a/fs/fat/file.c +++ b/fs/fat/file.c @@ -401,7 +401,7 @@ int fat_getattr(struct mnt_idmap *idmap, const struct path *path, struct inode *inode = d_inode(path->dentry); struct msdos_sb_info *sbi = MSDOS_SB(inode->i_sb); - generic_fillattr(idmap, inode, stat); + generic_fillattr(idmap, request_mask, inode, stat); stat->blksize = sbi->cluster_size; if (sbi->options.nfs == FAT_NFS_NOSTALE_RO) { diff --git a/fs/fat/inode.c b/fs/fat/inode.c index d99b8549ec8f..cdd39b6020f3 100644 --- a/fs/fat/inode.c +++ b/fs/fat/inode.c @@ -562,7 +562,7 @@ int fat_fill_inode(struct inode *inode, struct msdos_dir_entry *de) & ~((loff_t)sbi->cluster_size - 1)) >> 9; fat_time_fat2unix(sbi, &inode->i_mtime, de->time, de->date, 0); - inode->i_ctime = inode->i_mtime; + inode_set_ctime_to_ts(inode, inode->i_mtime); if (sbi->options.isvfat) { fat_time_fat2unix(sbi, &inode->i_atime, 0, de->adate, 0); fat_time_fat2unix(sbi, &MSDOS_I(inode)->i_crtime, de->ctime, @@ -1407,8 +1407,7 @@ static int fat_read_root(struct inode *inode) MSDOS_I(inode)->mmu_private = inode->i_size; fat_save_attrs(inode, ATTR_DIR); - inode->i_mtime.tv_sec = inode->i_atime.tv_sec = inode->i_ctime.tv_sec = 0; - inode->i_mtime.tv_nsec = inode->i_atime.tv_nsec = inode->i_ctime.tv_nsec = 0; + inode->i_mtime = inode->i_atime = inode_set_ctime(inode, 0, 0); set_nlink(inode, fat_subdirs(inode)+2); return 0; diff --git a/fs/fat/misc.c b/fs/fat/misc.c index 7e5d6ae305f2..f2304a1054aa 100644 --- a/fs/fat/misc.c +++ b/fs/fat/misc.c @@ -332,13 +332,14 @@ int fat_truncate_time(struct inode *inode, struct timespec64 *now, int flags) * but ctime updates are ignored. */ if (flags & S_MTIME) - inode->i_mtime = inode->i_ctime = fat_truncate_mtime(sbi, now); + inode->i_mtime = inode_set_ctime_to_ts(inode, + fat_truncate_mtime(sbi, now)); return 0; } EXPORT_SYMBOL_GPL(fat_truncate_time); -int fat_update_time(struct inode *inode, struct timespec64 *now, int flags) +int fat_update_time(struct inode *inode, int flags) { int dirty_flags = 0; @@ -346,16 +347,13 @@ int fat_update_time(struct inode *inode, struct timespec64 *now, int flags) return 0; if (flags & (S_ATIME | S_CTIME | S_MTIME)) { - fat_truncate_time(inode, now, flags); + fat_truncate_time(inode, NULL, flags); if (inode->i_sb->s_flags & SB_LAZYTIME) dirty_flags |= I_DIRTY_TIME; else dirty_flags |= I_DIRTY_SYNC; } - if ((flags & S_VERSION) && inode_maybe_inc_iversion(inode, false)) - dirty_flags |= I_DIRTY_SYNC; - __mark_inode_dirty(inode, dirty_flags); return 0; } diff --git a/fs/fcntl.c b/fs/fcntl.c index b622be119706..e871009f6c88 100644 --- a/fs/fcntl.c +++ b/fs/fcntl.c @@ -34,7 +34,7 @@ #define SETFL_MASK (O_APPEND | O_NONBLOCK | O_NDELAY | O_DIRECT | O_NOATIME) -static int setfl(int fd, struct file * filp, unsigned long arg) +static int setfl(int fd, struct file * filp, unsigned int arg) { struct inode * inode = file_inode(filp); int error = 0; @@ -112,11 +112,11 @@ void __f_setown(struct file *filp, struct pid *pid, enum pid_type type, } EXPORT_SYMBOL(__f_setown); -int f_setown(struct file *filp, unsigned long arg, int force) +int f_setown(struct file *filp, int who, int force) { enum pid_type type; struct pid *pid = NULL; - int who = arg, ret = 0; + int ret = 0; type = PIDTYPE_TGID; if (who < 0) { @@ -317,28 +317,29 @@ static long do_fcntl(int fd, unsigned int cmd, unsigned long arg, struct file *filp) { void __user *argp = (void __user *)arg; + int argi = (int)arg; struct flock flock; long err = -EINVAL; switch (cmd) { case F_DUPFD: - err = f_dupfd(arg, filp, 0); + err = f_dupfd(argi, filp, 0); break; case F_DUPFD_CLOEXEC: - err = f_dupfd(arg, filp, O_CLOEXEC); + err = f_dupfd(argi, filp, O_CLOEXEC); break; case F_GETFD: err = get_close_on_exec(fd) ? FD_CLOEXEC : 0; break; case F_SETFD: err = 0; - set_close_on_exec(fd, arg & FD_CLOEXEC); + set_close_on_exec(fd, argi & FD_CLOEXEC); break; case F_GETFL: err = filp->f_flags; break; case F_SETFL: - err = setfl(fd, filp, arg); + err = setfl(fd, filp, argi); break; #if BITS_PER_LONG != 32 /* 32-bit arches must use fcntl64() */ @@ -375,7 +376,7 @@ static long do_fcntl(int fd, unsigned int cmd, unsigned long arg, force_successful_syscall_return(); break; case F_SETOWN: - err = f_setown(filp, arg, 1); + err = f_setown(filp, argi, 1); break; case F_GETOWN_EX: err = f_getown_ex(filp, arg); @@ -391,28 +392,28 @@ static long do_fcntl(int fd, unsigned int cmd, unsigned long arg, break; case F_SETSIG: /* arg == 0 restores default behaviour. */ - if (!valid_signal(arg)) { + if (!valid_signal(argi)) { break; } err = 0; - filp->f_owner.signum = arg; + filp->f_owner.signum = argi; break; case F_GETLEASE: err = fcntl_getlease(filp); break; case F_SETLEASE: - err = fcntl_setlease(fd, filp, arg); + err = fcntl_setlease(fd, filp, argi); break; case F_NOTIFY: - err = fcntl_dirnotify(fd, filp, arg); + err = fcntl_dirnotify(fd, filp, argi); break; case F_SETPIPE_SZ: case F_GETPIPE_SZ: - err = pipe_fcntl(filp, cmd, arg); + err = pipe_fcntl(filp, cmd, argi); break; case F_ADD_SEALS: case F_GET_SEALS: - err = memfd_fcntl(filp, cmd, arg); + err = memfd_fcntl(filp, cmd, argi); break; case F_GET_RW_HINT: case F_SET_RW_HINT: diff --git a/fs/file.c b/fs/file.c index 35c62b54c9d6..3e4a4dfa38fc 100644 --- a/fs/file.c +++ b/fs/file.c @@ -668,7 +668,7 @@ EXPORT_SYMBOL(close_fd); /* for ksys_close() */ /** * last_fd - return last valid index into fd table - * @cur_fds: files struct + * @fdt: File descriptor table. * * Context: Either rcu read lock or files_lock must be held. * @@ -693,29 +693,30 @@ static inline void __range_cloexec(struct files_struct *cur_fds, spin_unlock(&cur_fds->file_lock); } -static inline void __range_close(struct files_struct *cur_fds, unsigned int fd, +static inline void __range_close(struct files_struct *files, unsigned int fd, unsigned int max_fd) { + struct file *file; unsigned n; - rcu_read_lock(); - n = last_fd(files_fdtable(cur_fds)); - rcu_read_unlock(); + spin_lock(&files->file_lock); + n = last_fd(files_fdtable(files)); max_fd = min(max_fd, n); - while (fd <= max_fd) { - struct file *file; - - spin_lock(&cur_fds->file_lock); - file = pick_file(cur_fds, fd++); - spin_unlock(&cur_fds->file_lock); - + for (; fd <= max_fd; fd++) { + file = pick_file(files, fd); if (file) { - /* found a valid file to close */ - filp_close(file, cur_fds); + spin_unlock(&files->file_lock); + filp_close(file, files); + cond_resched(); + spin_lock(&files->file_lock); + } else if (need_resched()) { + spin_unlock(&files->file_lock); cond_resched(); + spin_lock(&files->file_lock); } } + spin_unlock(&files->file_lock); } /** @@ -723,6 +724,7 @@ static inline void __range_close(struct files_struct *cur_fds, unsigned int fd, * * @fd: starting file descriptor to close * @max_fd: last file descriptor to close + * @flags: CLOSE_RANGE flags. * * This closes a range of file descriptors. All file descriptors * from @fd up to and including @max_fd are closed. @@ -1036,12 +1038,28 @@ unsigned long __fdget_raw(unsigned int fd) return __fget_light(fd, 0); } +/* + * Try to avoid f_pos locking. We only need it if the + * file is marked for FMODE_ATOMIC_POS, and it can be + * accessed multiple ways. + * + * Always do it for directories, because pidfd_getfd() + * can make a file accessible even if it otherwise would + * not be, and for directories this is a correctness + * issue, not a "POSIX requirement". + */ +static inline bool file_needs_f_pos_lock(struct file *file) +{ + return (file->f_mode & FMODE_ATOMIC_POS) && + (file_count(file) > 1 || file->f_op->iterate_shared); +} + unsigned long __fdget_pos(unsigned int fd) { unsigned long v = __fdget(fd); struct file *file = (struct file *)(v & ~3); - if (file && (file->f_mode & FMODE_ATOMIC_POS)) { + if (file && file_needs_f_pos_lock(file)) { v |= FDPUT_POS_UNLOCK; mutex_lock(&file->f_pos_lock); } diff --git a/fs/file_table.c b/fs/file_table.c index fc7d677ff5ad..ee21b3da9d08 100644 --- a/fs/file_table.c +++ b/fs/file_table.c @@ -461,11 +461,8 @@ void fput(struct file *file) */ void __fput_sync(struct file *file) { - if (atomic_long_dec_and_test(&file->f_count)) { - struct task_struct *task = current; - BUG_ON(!(task->flags & PF_KTHREAD)); + if (atomic_long_dec_and_test(&file->f_count)) __fput(file); - } } EXPORT_SYMBOL(fput); diff --git a/fs/freevxfs/Kconfig b/fs/freevxfs/Kconfig index 0e2fc08f7de4..912107ebea6f 100644 --- a/fs/freevxfs/Kconfig +++ b/fs/freevxfs/Kconfig @@ -2,6 +2,7 @@ config VXFS_FS tristate "FreeVxFS file system support (VERITAS VxFS(TM) compatible)" depends on BLOCK + select BUFFER_HEAD help FreeVxFS is a file system driver that support the VERITAS VxFS(TM) file system format. VERITAS VxFS(TM) is the standard file system diff --git a/fs/freevxfs/vxfs_inode.c b/fs/freevxfs/vxfs_inode.c index ceb6a12649ba..ac5d43b164b5 100644 --- a/fs/freevxfs/vxfs_inode.c +++ b/fs/freevxfs/vxfs_inode.c @@ -110,10 +110,9 @@ static inline void dip2vip_cpy(struct vxfs_sb_info *sbi, inode->i_size = vip->vii_size; inode->i_atime.tv_sec = vip->vii_atime; - inode->i_ctime.tv_sec = vip->vii_ctime; + inode_set_ctime(inode, vip->vii_ctime, 0); inode->i_mtime.tv_sec = vip->vii_mtime; inode->i_atime.tv_nsec = 0; - inode->i_ctime.tv_nsec = 0; inode->i_mtime.tv_nsec = 0; inode->i_blocks = vip->vii_blocks; diff --git a/fs/fs-writeback.c b/fs/fs-writeback.c index aca4b4811394..969ce991b0b0 100644 --- a/fs/fs-writeback.c +++ b/fs/fs-writeback.c @@ -1953,9 +1953,9 @@ static long __writeback_inodes_wb(struct bdi_writeback *wb, struct inode *inode = wb_inode(wb->b_io.prev); struct super_block *sb = inode->i_sb; - if (!trylock_super(sb)) { + if (!super_trylock_shared(sb)) { /* - * trylock_super() may fail consistently due to + * super_trylock_shared() may fail consistently due to * s_umount being grabbed by someone else. Don't use * requeue_io() to avoid busy retrying the inode/sb. */ diff --git a/fs/fs_context.c b/fs/fs_context.c index 851214d1d013..a0ad7a0c4680 100644 --- a/fs/fs_context.c +++ b/fs/fs_context.c @@ -162,6 +162,10 @@ EXPORT_SYMBOL(vfs_parse_fs_param); /** * vfs_parse_fs_string - Convenience function to just parse a string. + * @fc: Filesystem context. + * @key: Parameter name. + * @value: Default value. + * @v_size: Maximum number of bytes in the value. */ int vfs_parse_fs_string(struct fs_context *fc, const char *key, const char *value, size_t v_size) @@ -189,7 +193,7 @@ EXPORT_SYMBOL(vfs_parse_fs_string); /** * generic_parse_monolithic - Parse key[=val][,key[=val]]* mount data - * @ctx: The superblock configuration to fill in. + * @fc: The superblock configuration to fill in. * @data: The data to parse * * Parse a blob of data that's in key[=val][,key[=val]]* form. This can be @@ -315,10 +319,31 @@ struct fs_context *fs_context_for_reconfigure(struct dentry *dentry, } EXPORT_SYMBOL(fs_context_for_reconfigure); +/** + * fs_context_for_submount: allocate a new fs_context for a submount + * @type: file_system_type of the new context + * @reference: reference dentry from which to copy relevant info + * + * Allocate a new fs_context suitable for a submount. This also ensures that + * the fc->security object is inherited from @reference (if needed). + */ struct fs_context *fs_context_for_submount(struct file_system_type *type, struct dentry *reference) { - return alloc_fs_context(type, reference, 0, 0, FS_CONTEXT_FOR_SUBMOUNT); + struct fs_context *fc; + int ret; + + fc = alloc_fs_context(type, reference, 0, 0, FS_CONTEXT_FOR_SUBMOUNT); + if (IS_ERR(fc)) + return fc; + + ret = security_fs_context_submount(fc, reference->d_sb); + if (ret) { + put_fs_context(fc); + return ERR_PTR(ret); + } + + return fc; } EXPORT_SYMBOL(fs_context_for_submount); @@ -333,7 +358,7 @@ void fc_drop_locked(struct fs_context *fc) static void legacy_fs_context_free(struct fs_context *fc); /** - * vfs_dup_fc_config: Duplicate a filesystem context. + * vfs_dup_fs_context - Duplicate a filesystem context. * @src_fc: The context to copy. */ struct fs_context *vfs_dup_fs_context(struct fs_context *src_fc) @@ -379,7 +404,9 @@ EXPORT_SYMBOL(vfs_dup_fs_context); /** * logfc - Log a message to a filesystem context - * @fc: The filesystem context to log to. + * @log: The filesystem context to log to, or NULL to use printk. + * @prefix: A string to prefix the output with, or NULL. + * @level: 'w' for a warning, 'e' for an error. Anything else is a notice. * @fmt: The format of the buffer. */ void logfc(struct fc_log *log, const char *prefix, char level, const char *fmt, ...) @@ -692,6 +719,7 @@ void vfs_clean_context(struct fs_context *fc) security_free_mnt_opts(&fc->security); kfree(fc->source); fc->source = NULL; + fc->exclusive = false; fc->purpose = FS_CONTEXT_FOR_RECONFIGURE; fc->phase = FS_CONTEXT_AWAITING_RECONF; diff --git a/fs/fs_struct.c b/fs/fs_struct.c index 04b3f5b9c629..64c2d0814ed6 100644 --- a/fs/fs_struct.c +++ b/fs/fs_struct.c @@ -62,7 +62,7 @@ void chroot_fs_refs(const struct path *old_root, const struct path *new_root) int count = 0; read_lock(&tasklist_lock); - do_each_thread(g, p) { + for_each_process_thread(g, p) { task_lock(p); fs = p->fs; if (fs) { @@ -79,7 +79,7 @@ void chroot_fs_refs(const struct path *old_root, const struct path *new_root) spin_unlock(&fs->lock); } task_unlock(p); - } while_each_thread(g, p); + } read_unlock(&tasklist_lock); while (count--) path_put(old_root); diff --git a/fs/fsopen.c b/fs/fsopen.c index fc9d2d9fd234..ce03f6521c88 100644 --- a/fs/fsopen.c +++ b/fs/fsopen.c @@ -209,6 +209,72 @@ err: return ret; } +static int vfs_cmd_create(struct fs_context *fc, bool exclusive) +{ + struct super_block *sb; + int ret; + + if (fc->phase != FS_CONTEXT_CREATE_PARAMS) + return -EBUSY; + + if (!mount_capable(fc)) + return -EPERM; + + /* require the new mount api */ + if (exclusive && fc->ops == &legacy_fs_context_ops) + return -EOPNOTSUPP; + + fc->phase = FS_CONTEXT_CREATING; + fc->exclusive = exclusive; + + ret = vfs_get_tree(fc); + if (ret) { + fc->phase = FS_CONTEXT_FAILED; + return ret; + } + + sb = fc->root->d_sb; + ret = security_sb_kern_mount(sb); + if (unlikely(ret)) { + fc_drop_locked(fc); + fc->phase = FS_CONTEXT_FAILED; + return ret; + } + + /* vfs_get_tree() callchains will have grabbed @s_umount */ + up_write(&sb->s_umount); + fc->phase = FS_CONTEXT_AWAITING_MOUNT; + return 0; +} + +static int vfs_cmd_reconfigure(struct fs_context *fc) +{ + struct super_block *sb; + int ret; + + if (fc->phase != FS_CONTEXT_RECONF_PARAMS) + return -EBUSY; + + fc->phase = FS_CONTEXT_RECONFIGURING; + + sb = fc->root->d_sb; + if (!ns_capable(sb->s_user_ns, CAP_SYS_ADMIN)) { + fc->phase = FS_CONTEXT_FAILED; + return -EPERM; + } + + down_write(&sb->s_umount); + ret = reconfigure_super(fc); + up_write(&sb->s_umount); + if (ret) { + fc->phase = FS_CONTEXT_FAILED; + return ret; + } + + vfs_clean_context(fc); + return 0; +} + /* * Check the state and apply the configuration. Note that this function is * allowed to 'steal' the value by setting param->xxx to NULL before returning. @@ -216,7 +282,6 @@ err: static int vfs_fsconfig_locked(struct fs_context *fc, int cmd, struct fs_parameter *param) { - struct super_block *sb; int ret; ret = finish_clean_context(fc); @@ -224,39 +289,11 @@ static int vfs_fsconfig_locked(struct fs_context *fc, int cmd, return ret; switch (cmd) { case FSCONFIG_CMD_CREATE: - if (fc->phase != FS_CONTEXT_CREATE_PARAMS) - return -EBUSY; - if (!mount_capable(fc)) - return -EPERM; - fc->phase = FS_CONTEXT_CREATING; - ret = vfs_get_tree(fc); - if (ret) - break; - sb = fc->root->d_sb; - ret = security_sb_kern_mount(sb); - if (unlikely(ret)) { - fc_drop_locked(fc); - break; - } - up_write(&sb->s_umount); - fc->phase = FS_CONTEXT_AWAITING_MOUNT; - return 0; + return vfs_cmd_create(fc, false); + case FSCONFIG_CMD_CREATE_EXCL: + return vfs_cmd_create(fc, true); case FSCONFIG_CMD_RECONFIGURE: - if (fc->phase != FS_CONTEXT_RECONF_PARAMS) - return -EBUSY; - fc->phase = FS_CONTEXT_RECONFIGURING; - sb = fc->root->d_sb; - if (!ns_capable(sb->s_user_ns, CAP_SYS_ADMIN)) { - ret = -EPERM; - break; - } - down_write(&sb->s_umount); - ret = reconfigure_super(fc); - up_write(&sb->s_umount); - if (ret) - break; - vfs_clean_context(fc); - return 0; + return vfs_cmd_reconfigure(fc); default: if (fc->phase != FS_CONTEXT_CREATE_PARAMS && fc->phase != FS_CONTEXT_RECONF_PARAMS) @@ -264,8 +301,6 @@ static int vfs_fsconfig_locked(struct fs_context *fc, int cmd, return vfs_parse_fs_param(fc, param); } - fc->phase = FS_CONTEXT_FAILED; - return ret; } /** @@ -353,6 +388,7 @@ SYSCALL_DEFINE5(fsconfig, return -EINVAL; break; case FSCONFIG_CMD_CREATE: + case FSCONFIG_CMD_CREATE_EXCL: case FSCONFIG_CMD_RECONFIGURE: if (_key || _value || aux) return -EINVAL; diff --git a/fs/fuse/control.c b/fs/fuse/control.c index 247ef4f76761..ab62e4624256 100644 --- a/fs/fuse/control.c +++ b/fs/fuse/control.c @@ -235,7 +235,7 @@ static struct dentry *fuse_ctl_add_dentry(struct dentry *parent, inode->i_mode = mode; inode->i_uid = fc->user_id; inode->i_gid = fc->group_id; - inode->i_atime = inode->i_mtime = inode->i_ctime = current_time(inode); + inode->i_atime = inode->i_mtime = inode_set_ctime_current(inode); /* setting ->i_op to NULL is not allowed */ if (iop) inode->i_op = iop; diff --git a/fs/fuse/dir.c b/fs/fuse/dir.c index f67bef9d83c4..881524b9a55a 100644 --- a/fs/fuse/dir.c +++ b/fs/fuse/dir.c @@ -933,7 +933,7 @@ void fuse_flush_time_update(struct inode *inode) static void fuse_update_ctime_in_cache(struct inode *inode) { if (!IS_NOCMTIME(inode)) { - inode->i_ctime = current_time(inode); + inode_set_ctime_current(inode); mark_inode_dirty_sync(inode); fuse_flush_time_update(inode); } @@ -1222,7 +1222,7 @@ static int fuse_update_get_attr(struct inode *inode, struct file *file, forget_all_cached_acls(inode); err = fuse_do_getattr(inode, stat, file); } else if (stat) { - generic_fillattr(&nop_mnt_idmap, inode, stat); + generic_fillattr(&nop_mnt_idmap, request_mask, inode, stat); stat->mode = fi->orig_i_mode; stat->ino = fi->orig_ino; } @@ -1715,8 +1715,8 @@ int fuse_flush_times(struct inode *inode, struct fuse_file *ff) inarg.mtimensec = inode->i_mtime.tv_nsec; if (fm->fc->minor >= 23) { inarg.valid |= FATTR_CTIME; - inarg.ctime = inode->i_ctime.tv_sec; - inarg.ctimensec = inode->i_ctime.tv_nsec; + inarg.ctime = inode_get_ctime(inode).tv_sec; + inarg.ctimensec = inode_get_ctime(inode).tv_nsec; } if (ff) { inarg.valid |= FATTR_FH; @@ -1857,7 +1857,7 @@ int fuse_do_setattr(struct dentry *dentry, struct iattr *attr, if (attr->ia_valid & ATTR_MTIME) inode->i_mtime = attr->ia_mtime; if (attr->ia_valid & ATTR_CTIME) - inode->i_ctime = attr->ia_ctime; + inode_set_ctime_to_ts(inode, attr->ia_ctime); /* FIXME: clear I_DIRTY_SYNC? */ } diff --git a/fs/fuse/inode.c b/fs/fuse/inode.c index f19d748890f0..549358ffea8b 100644 --- a/fs/fuse/inode.c +++ b/fs/fuse/inode.c @@ -194,8 +194,7 @@ void fuse_change_attributes_common(struct inode *inode, struct fuse_attr *attr, inode->i_mtime.tv_nsec = attr->mtimensec; } if (!(cache_mask & STATX_CTIME)) { - inode->i_ctime.tv_sec = attr->ctime; - inode->i_ctime.tv_nsec = attr->ctimensec; + inode_set_ctime(inode, attr->ctime, attr->ctimensec); } if (attr->blksize != 0) @@ -259,8 +258,8 @@ void fuse_change_attributes(struct inode *inode, struct fuse_attr *attr, attr->mtimensec = inode->i_mtime.tv_nsec; } if (cache_mask & STATX_CTIME) { - attr->ctime = inode->i_ctime.tv_sec; - attr->ctimensec = inode->i_ctime.tv_nsec; + attr->ctime = inode_get_ctime(inode).tv_sec; + attr->ctimensec = inode_get_ctime(inode).tv_nsec; } if ((attr_version != 0 && fi->attr_version > attr_version) || @@ -318,8 +317,7 @@ static void fuse_init_inode(struct inode *inode, struct fuse_attr *attr, inode->i_size = attr->size; inode->i_mtime.tv_sec = attr->mtime; inode->i_mtime.tv_nsec = attr->mtimensec; - inode->i_ctime.tv_sec = attr->ctime; - inode->i_ctime.tv_nsec = attr->ctimensec; + inode_set_ctime(inode, attr->ctime, attr->ctimensec); if (S_ISREG(inode->i_mode)) { fuse_init_common(inode); fuse_init_file_inode(inode, attr->flags); @@ -1401,16 +1399,18 @@ EXPORT_SYMBOL_GPL(fuse_dev_free); static void fuse_fill_attr_from_inode(struct fuse_attr *attr, const struct fuse_inode *fi) { + struct timespec64 ctime = inode_get_ctime(&fi->inode); + *attr = (struct fuse_attr){ .ino = fi->inode.i_ino, .size = fi->inode.i_size, .blocks = fi->inode.i_blocks, .atime = fi->inode.i_atime.tv_sec, .mtime = fi->inode.i_mtime.tv_sec, - .ctime = fi->inode.i_ctime.tv_sec, + .ctime = ctime.tv_sec, .atimensec = fi->inode.i_atime.tv_nsec, .mtimensec = fi->inode.i_mtime.tv_nsec, - .ctimensec = fi->inode.i_ctime.tv_nsec, + .ctimensec = ctime.tv_nsec, .mode = fi->inode.i_mode, .nlink = fi->inode.i_nlink, .uid = fi->inode.i_uid.val, diff --git a/fs/gfs2/Kconfig b/fs/gfs2/Kconfig index 03c966840422..be7f87a8e11a 100644 --- a/fs/gfs2/Kconfig +++ b/fs/gfs2/Kconfig @@ -1,6 +1,7 @@ # SPDX-License-Identifier: GPL-2.0-only config GFS2_FS tristate "GFS2 file system support" + select BUFFER_HEAD select FS_POSIX_ACL select CRC32 select LIBCRC32C diff --git a/fs/gfs2/acl.c b/fs/gfs2/acl.c index a392aa0f041d..443640e6fb9c 100644 --- a/fs/gfs2/acl.c +++ b/fs/gfs2/acl.c @@ -142,7 +142,7 @@ int gfs2_set_acl(struct mnt_idmap *idmap, struct dentry *dentry, ret = __gfs2_set_acl(inode, acl, type); if (!ret && mode != inode->i_mode) { - inode->i_ctime = current_time(inode); + inode_set_ctime_current(inode); inode->i_mode = mode; mark_inode_dirty(inode); } diff --git a/fs/gfs2/aops.c b/fs/gfs2/aops.c index ae49256b7c8c..9c4b26aec580 100644 --- a/fs/gfs2/aops.c +++ b/fs/gfs2/aops.c @@ -747,7 +747,7 @@ static const struct address_space_operations gfs2_aops = { .writepages = gfs2_writepages, .read_folio = gfs2_read_folio, .readahead = gfs2_readahead, - .dirty_folio = filemap_dirty_folio, + .dirty_folio = iomap_dirty_folio, .release_folio = iomap_release_folio, .invalidate_folio = iomap_invalidate_folio, .bmap = gfs2_bmap, diff --git a/fs/gfs2/bmap.c b/fs/gfs2/bmap.c index 8d611fbcf0bd..f62366be7587 100644 --- a/fs/gfs2/bmap.c +++ b/fs/gfs2/bmap.c @@ -971,7 +971,7 @@ gfs2_iomap_get_folio(struct iomap_iter *iter, loff_t pos, unsigned len) if (status) return ERR_PTR(status); - folio = iomap_get_folio(iter, pos); + folio = iomap_get_folio(iter, pos, len); if (IS_ERR(folio)) gfs2_trans_end(sdp); return folio; @@ -1386,7 +1386,7 @@ static int trunc_start(struct inode *inode, u64 newsize) ip->i_diskflags |= GFS2_DIF_TRUNC_IN_PROG; i_size_write(inode, newsize); - ip->i_inode.i_mtime = ip->i_inode.i_ctime = current_time(&ip->i_inode); + ip->i_inode.i_mtime = inode_set_ctime_current(&ip->i_inode); gfs2_dinode_out(ip, dibh->b_data); if (journaled) @@ -1583,8 +1583,7 @@ out_unlock: /* Every transaction boundary, we rewrite the dinode to keep its di_blocks current in case of failure. */ - ip->i_inode.i_mtime = ip->i_inode.i_ctime = - current_time(&ip->i_inode); + ip->i_inode.i_mtime = inode_set_ctime_current(&ip->i_inode); gfs2_trans_add_meta(ip->i_gl, dibh); gfs2_dinode_out(ip, dibh->b_data); brelse(dibh); @@ -1950,7 +1949,7 @@ static int punch_hole(struct gfs2_inode *ip, u64 offset, u64 length) gfs2_statfs_change(sdp, 0, +btotal, 0); gfs2_quota_change(ip, -(s64)btotal, ip->i_inode.i_uid, ip->i_inode.i_gid); - ip->i_inode.i_mtime = ip->i_inode.i_ctime = current_time(&ip->i_inode); + ip->i_inode.i_mtime = inode_set_ctime_current(&ip->i_inode); gfs2_trans_add_meta(ip->i_gl, dibh); gfs2_dinode_out(ip, dibh->b_data); up_write(&ip->i_rw_mutex); @@ -1993,7 +1992,7 @@ static int trunc_end(struct gfs2_inode *ip) gfs2_buffer_clear_tail(dibh, sizeof(struct gfs2_dinode)); gfs2_ordered_del_inode(ip); } - ip->i_inode.i_mtime = ip->i_inode.i_ctime = current_time(&ip->i_inode); + ip->i_inode.i_mtime = inode_set_ctime_current(&ip->i_inode); ip->i_diskflags &= ~GFS2_DIF_TRUNC_IN_PROG; gfs2_trans_add_meta(ip->i_gl, dibh); @@ -2094,7 +2093,7 @@ static int do_grow(struct inode *inode, u64 size) goto do_end_trans; truncate_setsize(inode, size); - ip->i_inode.i_mtime = ip->i_inode.i_ctime = current_time(&ip->i_inode); + ip->i_inode.i_mtime = inode_set_ctime_current(&ip->i_inode); gfs2_trans_add_meta(ip->i_gl, dibh); gfs2_dinode_out(ip, dibh->b_data); brelse(dibh); diff --git a/fs/gfs2/dir.c b/fs/gfs2/dir.c index 54a6d17b8c25..1a2afa88f8be 100644 --- a/fs/gfs2/dir.c +++ b/fs/gfs2/dir.c @@ -130,7 +130,7 @@ static int gfs2_dir_write_stuffed(struct gfs2_inode *ip, const char *buf, memcpy(dibh->b_data + offset + sizeof(struct gfs2_dinode), buf, size); if (ip->i_inode.i_size < offset + size) i_size_write(&ip->i_inode, offset + size); - ip->i_inode.i_mtime = ip->i_inode.i_ctime = current_time(&ip->i_inode); + ip->i_inode.i_mtime = inode_set_ctime_current(&ip->i_inode); gfs2_dinode_out(ip, dibh->b_data); brelse(dibh); @@ -227,7 +227,7 @@ out: if (ip->i_inode.i_size < offset + copied) i_size_write(&ip->i_inode, offset + copied); - ip->i_inode.i_mtime = ip->i_inode.i_ctime = current_time(&ip->i_inode); + ip->i_inode.i_mtime = inode_set_ctime_current(&ip->i_inode); gfs2_trans_add_meta(ip->i_gl, dibh); gfs2_dinode_out(ip, dibh->b_data); @@ -1814,7 +1814,7 @@ int gfs2_dir_add(struct inode *inode, const struct qstr *name, gfs2_inum_out(nip, dent); dent->de_type = cpu_to_be16(IF2DT(nip->i_inode.i_mode)); dent->de_rahead = cpu_to_be16(gfs2_inode_ra_len(nip)); - tv = current_time(&ip->i_inode); + tv = inode_set_ctime_current(&ip->i_inode); if (ip->i_diskflags & GFS2_DIF_EXHASH) { leaf = (struct gfs2_leaf *)bh->b_data; be16_add_cpu(&leaf->lf_entries, 1); @@ -1825,7 +1825,7 @@ int gfs2_dir_add(struct inode *inode, const struct qstr *name, da->bh = NULL; brelse(bh); ip->i_entries++; - ip->i_inode.i_mtime = ip->i_inode.i_ctime = tv; + ip->i_inode.i_mtime = tv; if (S_ISDIR(nip->i_inode.i_mode)) inc_nlink(&ip->i_inode); mark_inode_dirty(inode); @@ -1876,7 +1876,7 @@ int gfs2_dir_del(struct gfs2_inode *dip, const struct dentry *dentry) const struct qstr *name = &dentry->d_name; struct gfs2_dirent *dent, *prev = NULL; struct buffer_head *bh; - struct timespec64 tv = current_time(&dip->i_inode); + struct timespec64 tv; /* Returns _either_ the entry (if its first in block) or the previous entry otherwise */ @@ -1896,6 +1896,7 @@ int gfs2_dir_del(struct gfs2_inode *dip, const struct dentry *dentry) } dirent_del(dip, bh, prev, dent); + tv = inode_set_ctime_current(&dip->i_inode); if (dip->i_diskflags & GFS2_DIF_EXHASH) { struct gfs2_leaf *leaf = (struct gfs2_leaf *)bh->b_data; u16 entries = be16_to_cpu(leaf->lf_entries); @@ -1910,7 +1911,7 @@ int gfs2_dir_del(struct gfs2_inode *dip, const struct dentry *dentry) if (!dip->i_entries) gfs2_consist_inode(dip); dip->i_entries--; - dip->i_inode.i_mtime = dip->i_inode.i_ctime = tv; + dip->i_inode.i_mtime = tv; if (d_is_dir(dentry)) drop_nlink(&dip->i_inode); mark_inode_dirty(&dip->i_inode); @@ -1951,7 +1952,7 @@ int gfs2_dir_mvino(struct gfs2_inode *dip, const struct qstr *filename, dent->de_type = cpu_to_be16(new_type); brelse(bh); - dip->i_inode.i_mtime = dip->i_inode.i_ctime = current_time(&dip->i_inode); + dip->i_inode.i_mtime = inode_set_ctime_current(&dip->i_inode); mark_inode_dirty_sync(&dip->i_inode); return 0; } diff --git a/fs/gfs2/file.c b/fs/gfs2/file.c index 1bf3c4453516..f2700477a300 100644 --- a/fs/gfs2/file.c +++ b/fs/gfs2/file.c @@ -260,7 +260,7 @@ static int do_gfs2_set_flags(struct inode *inode, u32 reqflags, u32 mask) error = gfs2_meta_inode_buffer(ip, &bh); if (error) goto out_trans_end; - inode->i_ctime = current_time(inode); + inode_set_ctime_current(inode); gfs2_trans_add_meta(ip->i_gl, bh); ip->i_diskflags = new_flags; gfs2_dinode_out(ip, bh->b_data); @@ -432,7 +432,7 @@ static vm_fault_t gfs2_page_mkwrite(struct vm_fault *vmf) gfs2_holder_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, &gh); err = gfs2_glock_nq(&gh); if (err) { - ret = block_page_mkwrite_return(err); + ret = vmf_fs_error(err); goto out_uninit; } @@ -474,7 +474,7 @@ static vm_fault_t gfs2_page_mkwrite(struct vm_fault *vmf) err = gfs2_rindex_update(sdp); if (err) { - ret = block_page_mkwrite_return(err); + ret = vmf_fs_error(err); goto out_unlock; } @@ -482,12 +482,12 @@ static vm_fault_t gfs2_page_mkwrite(struct vm_fault *vmf) ap.target = data_blocks + ind_blocks; err = gfs2_quota_lock_check(ip, &ap); if (err) { - ret = block_page_mkwrite_return(err); + ret = vmf_fs_error(err); goto out_unlock; } err = gfs2_inplace_reserve(ip, &ap); if (err) { - ret = block_page_mkwrite_return(err); + ret = vmf_fs_error(err); goto out_quota_unlock; } @@ -500,7 +500,7 @@ static vm_fault_t gfs2_page_mkwrite(struct vm_fault *vmf) } err = gfs2_trans_begin(sdp, rblocks, 0); if (err) { - ret = block_page_mkwrite_return(err); + ret = vmf_fs_error(err); goto out_trans_fail; } @@ -508,7 +508,7 @@ static vm_fault_t gfs2_page_mkwrite(struct vm_fault *vmf) if (gfs2_is_stuffed(ip)) { err = gfs2_unstuff_dinode(ip); if (err) { - ret = block_page_mkwrite_return(err); + ret = vmf_fs_error(err); goto out_trans_end; } } @@ -524,7 +524,7 @@ static vm_fault_t gfs2_page_mkwrite(struct vm_fault *vmf) err = gfs2_allocate_page_backing(page, length); if (err) - ret = block_page_mkwrite_return(err); + ret = vmf_fs_error(err); out_page_locked: if (ret != VM_FAULT_LOCKED) @@ -558,7 +558,7 @@ static vm_fault_t gfs2_fault(struct vm_fault *vmf) gfs2_holder_init(ip->i_gl, LM_ST_SHARED, 0, &gh); err = gfs2_glock_nq(&gh); if (err) { - ret = block_page_mkwrite_return(err); + ret = vmf_fs_error(err); goto out_uninit; } ret = filemap_fault(vmf); @@ -1436,17 +1436,14 @@ static int gfs2_lock(struct file *file, int cmd, struct file_lock *fl) if (!(fl->fl_flags & FL_POSIX)) return -ENOLCK; - if (cmd == F_CANCELLK) { - /* Hack: */ - cmd = F_SETLK; - fl->fl_type = F_UNLCK; - } if (unlikely(gfs2_withdrawn(sdp))) { if (fl->fl_type == F_UNLCK) locks_lock_file_wait(file, fl); return -EIO; } - if (IS_GETLK(cmd)) + if (cmd == F_CANCELLK) + return dlm_posix_cancel(ls->ls_dlm, ip->i_no_addr, file, fl); + else if (IS_GETLK(cmd)) return dlm_posix_get(ls->ls_dlm, ip->i_no_addr, file, fl); else if (fl->fl_type == F_UNLCK) return dlm_posix_unlock(ls->ls_dlm, ip->i_no_addr, file, fl); @@ -1578,7 +1575,7 @@ const struct file_operations gfs2_file_fops = { .fsync = gfs2_fsync, .lock = gfs2_lock, .flock = gfs2_flock, - .splice_read = filemap_splice_read, + .splice_read = copy_splice_read, .splice_write = gfs2_file_splice_write, .setlease = simple_nosetlease, .fallocate = gfs2_fallocate, @@ -1609,7 +1606,7 @@ const struct file_operations gfs2_file_fops_nolock = { .open = gfs2_open, .release = gfs2_release, .fsync = gfs2_fsync, - .splice_read = filemap_splice_read, + .splice_read = copy_splice_read, .splice_write = gfs2_file_splice_write, .setlease = generic_setlease, .fallocate = gfs2_fallocate, diff --git a/fs/gfs2/glops.c b/fs/gfs2/glops.c index 54319328b16b..aecdac3cfbe1 100644 --- a/fs/gfs2/glops.c +++ b/fs/gfs2/glops.c @@ -437,8 +437,8 @@ static int gfs2_dinode_in(struct gfs2_inode *ip, const void *buf) inode->i_atime = atime; inode->i_mtime.tv_sec = be64_to_cpu(str->di_mtime); inode->i_mtime.tv_nsec = be32_to_cpu(str->di_mtime_nsec); - inode->i_ctime.tv_sec = be64_to_cpu(str->di_ctime); - inode->i_ctime.tv_nsec = be32_to_cpu(str->di_ctime_nsec); + inode_set_ctime(inode, be64_to_cpu(str->di_ctime), + be32_to_cpu(str->di_ctime_nsec)); ip->i_goal = be64_to_cpu(str->di_goal_meta); ip->i_generation = be64_to_cpu(str->di_generation); diff --git a/fs/gfs2/inode.c b/fs/gfs2/inode.c index 17c994a0c0d0..a21ac41d6669 100644 --- a/fs/gfs2/inode.c +++ b/fs/gfs2/inode.c @@ -690,7 +690,7 @@ static int gfs2_create_inode(struct inode *dir, struct dentry *dentry, set_nlink(inode, S_ISDIR(mode) ? 2 : 1); inode->i_rdev = dev; inode->i_size = size; - inode->i_atime = inode->i_mtime = inode->i_ctime = current_time(inode); + inode->i_atime = inode->i_mtime = inode_set_ctime_current(inode); munge_mode_uid_gid(dip, inode); check_and_update_goal(dip); ip->i_goal = dip->i_goal; @@ -1029,7 +1029,7 @@ static int gfs2_link(struct dentry *old_dentry, struct inode *dir, gfs2_trans_add_meta(ip->i_gl, dibh); inc_nlink(&ip->i_inode); - ip->i_inode.i_ctime = current_time(&ip->i_inode); + inode_set_ctime_current(&ip->i_inode); ihold(inode); d_instantiate(dentry, inode); mark_inode_dirty(inode); @@ -1114,7 +1114,7 @@ static int gfs2_unlink_inode(struct gfs2_inode *dip, return error; ip->i_entries = 0; - inode->i_ctime = current_time(inode); + inode_set_ctime_current(inode); if (S_ISDIR(inode->i_mode)) clear_nlink(inode); else @@ -1371,7 +1371,7 @@ static int update_moved_ino(struct gfs2_inode *ip, struct gfs2_inode *ndip, if (dir_rename) return gfs2_dir_mvino(ip, &gfs2_qdotdot, ndip, DT_DIR); - ip->i_inode.i_ctime = current_time(&ip->i_inode); + inode_set_ctime_current(&ip->i_inode); mark_inode_dirty_sync(&ip->i_inode); return 0; } @@ -2071,7 +2071,7 @@ static int gfs2_getattr(struct mnt_idmap *idmap, STATX_ATTR_IMMUTABLE | STATX_ATTR_NODUMP); - generic_fillattr(&nop_mnt_idmap, inode, stat); + generic_fillattr(&nop_mnt_idmap, request_mask, inode, stat); if (gfs2_holder_initialized(&gh)) gfs2_glock_dq_uninit(&gh); @@ -2139,8 +2139,7 @@ loff_t gfs2_seek_hole(struct file *file, loff_t offset) return vfs_setpos(file, ret, inode->i_sb->s_maxbytes); } -static int gfs2_update_time(struct inode *inode, struct timespec64 *time, - int flags) +static int gfs2_update_time(struct inode *inode, int flags) { struct gfs2_inode *ip = GFS2_I(inode); struct gfs2_glock *gl = ip->i_gl; @@ -2155,7 +2154,8 @@ static int gfs2_update_time(struct inode *inode, struct timespec64 *time, if (error) return error; } - return generic_update_time(inode, time, flags); + generic_update_time(inode, flags); + return 0; } static const struct inode_operations gfs2_file_iops = { diff --git a/fs/gfs2/quota.c b/fs/gfs2/quota.c index 704192b73605..aa5fd06d47bc 100644 --- a/fs/gfs2/quota.c +++ b/fs/gfs2/quota.c @@ -871,7 +871,7 @@ static int gfs2_adjust_quota(struct gfs2_inode *ip, loff_t loc, size = loc + sizeof(struct gfs2_quota); if (size > inode->i_size) i_size_write(inode, size); - inode->i_mtime = inode->i_atime = current_time(inode); + inode->i_mtime = inode_set_ctime_current(inode); mark_inode_dirty(inode); set_bit(QDF_REFRESH, &qd->qd_flags); } diff --git a/fs/gfs2/super.c b/fs/gfs2/super.c index 9f4d5d6549ee..2f701335e8ee 100644 --- a/fs/gfs2/super.c +++ b/fs/gfs2/super.c @@ -412,7 +412,7 @@ void gfs2_dinode_out(const struct gfs2_inode *ip, void *buf) str->di_blocks = cpu_to_be64(gfs2_get_inode_blocks(inode)); str->di_atime = cpu_to_be64(inode->i_atime.tv_sec); str->di_mtime = cpu_to_be64(inode->i_mtime.tv_sec); - str->di_ctime = cpu_to_be64(inode->i_ctime.tv_sec); + str->di_ctime = cpu_to_be64(inode_get_ctime(inode).tv_sec); str->di_goal_meta = cpu_to_be64(ip->i_goal); str->di_goal_data = cpu_to_be64(ip->i_goal); @@ -429,7 +429,7 @@ void gfs2_dinode_out(const struct gfs2_inode *ip, void *buf) str->di_eattr = cpu_to_be64(ip->i_eattr); str->di_atime_nsec = cpu_to_be32(inode->i_atime.tv_nsec); str->di_mtime_nsec = cpu_to_be32(inode->i_mtime.tv_nsec); - str->di_ctime_nsec = cpu_to_be32(inode->i_ctime.tv_nsec); + str->di_ctime_nsec = cpu_to_be32(inode_get_ctime(inode).tv_nsec); } /** @@ -689,7 +689,7 @@ static int gfs2_freeze_locally(struct gfs2_sbd *sdp) struct super_block *sb = sdp->sd_vfs; int error; - error = freeze_super(sb); + error = freeze_super(sb, FREEZE_HOLDER_USERSPACE); if (error) return error; @@ -697,7 +697,9 @@ static int gfs2_freeze_locally(struct gfs2_sbd *sdp) gfs2_log_flush(sdp, NULL, GFS2_LOG_HEAD_FLUSH_FREEZE | GFS2_LFC_FREEZE_GO_SYNC); if (gfs2_withdrawn(sdp)) { - thaw_super(sb); + error = thaw_super(sb, FREEZE_HOLDER_USERSPACE); + if (error) + return error; return -EIO; } } @@ -712,7 +714,7 @@ static int gfs2_do_thaw(struct gfs2_sbd *sdp) error = gfs2_freeze_lock_shared(sdp); if (error) goto fail; - error = thaw_super(sb); + error = thaw_super(sb, FREEZE_HOLDER_USERSPACE); if (!error) return 0; @@ -761,7 +763,7 @@ out: * */ -static int gfs2_freeze_super(struct super_block *sb) +static int gfs2_freeze_super(struct super_block *sb, enum freeze_holder who) { struct gfs2_sbd *sdp = sb->s_fs_info; int error; @@ -816,7 +818,7 @@ out: * */ -static int gfs2_thaw_super(struct super_block *sb) +static int gfs2_thaw_super(struct super_block *sb, enum freeze_holder who) { struct gfs2_sbd *sdp = sb->s_fs_info; int error; diff --git a/fs/gfs2/sys.c b/fs/gfs2/sys.c index 2dfbe2f188dd..c60bc7f628e1 100644 --- a/fs/gfs2/sys.c +++ b/fs/gfs2/sys.c @@ -168,10 +168,10 @@ static ssize_t freeze_store(struct gfs2_sbd *sdp, const char *buf, size_t len) switch (n) { case 0: - error = thaw_super(sdp->sd_vfs); + error = thaw_super(sdp->sd_vfs, FREEZE_HOLDER_USERSPACE); break; case 1: - error = freeze_super(sdp->sd_vfs); + error = freeze_super(sdp->sd_vfs, FREEZE_HOLDER_USERSPACE); break; default: return -EINVAL; diff --git a/fs/gfs2/trans.c b/fs/gfs2/trans.c index ec1631257978..7e835be7032d 100644 --- a/fs/gfs2/trans.c +++ b/fs/gfs2/trans.c @@ -230,9 +230,11 @@ void gfs2_trans_add_meta(struct gfs2_glock *gl, struct buffer_head *bh) { struct gfs2_sbd *sdp = gl->gl_name.ln_sbd; + struct super_block *sb = sdp->sd_vfs; struct gfs2_bufdata *bd; struct gfs2_meta_header *mh; struct gfs2_trans *tr = current->journal_info; + bool withdraw = false; lock_buffer(bh); if (buffer_pinned(bh)) { @@ -266,13 +268,15 @@ void gfs2_trans_add_meta(struct gfs2_glock *gl, struct buffer_head *bh) (unsigned long long)bd->bd_bh->b_blocknr); BUG(); } - if (unlikely(test_bit(SDF_FROZEN, &sdp->sd_flags))) { - fs_info(sdp, "GFS2:adding buf while frozen\n"); - gfs2_assert_withdraw(sdp, 0); - } if (unlikely(gfs2_withdrawn(sdp))) { fs_info(sdp, "GFS2:adding buf while withdrawn! 0x%llx\n", (unsigned long long)bd->bd_bh->b_blocknr); + goto out_unlock; + } + if (unlikely(sb->s_writers.frozen == SB_FREEZE_COMPLETE)) { + fs_info(sdp, "GFS2:adding buf while frozen\n"); + withdraw = true; + goto out_unlock; } gfs2_pin(sdp, bd->bd_bh); mh->__pad0 = cpu_to_be64(0); @@ -281,6 +285,8 @@ void gfs2_trans_add_meta(struct gfs2_glock *gl, struct buffer_head *bh) tr->tr_num_buf_new++; out_unlock: gfs2_log_unlock(sdp); + if (withdraw) + gfs2_assert_withdraw(sdp, 0); out: unlock_buffer(bh); } diff --git a/fs/gfs2/xattr.c b/fs/gfs2/xattr.c index 93b36d026bb4..4fea70c0fe3d 100644 --- a/fs/gfs2/xattr.c +++ b/fs/gfs2/xattr.c @@ -311,7 +311,7 @@ static int ea_dealloc_unstuffed(struct gfs2_inode *ip, struct buffer_head *bh, ea->ea_num_ptrs = 0; } - ip->i_inode.i_ctime = current_time(&ip->i_inode); + inode_set_ctime_current(&ip->i_inode); __mark_inode_dirty(&ip->i_inode, I_DIRTY_DATASYNC); gfs2_trans_end(sdp); @@ -763,7 +763,7 @@ static int ea_alloc_skeleton(struct gfs2_inode *ip, struct gfs2_ea_request *er, if (error) goto out_end_trans; - ip->i_inode.i_ctime = current_time(&ip->i_inode); + inode_set_ctime_current(&ip->i_inode); __mark_inode_dirty(&ip->i_inode, I_DIRTY_DATASYNC); out_end_trans: @@ -888,7 +888,7 @@ static int ea_set_simple_noalloc(struct gfs2_inode *ip, struct buffer_head *bh, if (es->es_el) ea_set_remove_stuffed(ip, es->es_el); - ip->i_inode.i_ctime = current_time(&ip->i_inode); + inode_set_ctime_current(&ip->i_inode); __mark_inode_dirty(&ip->i_inode, I_DIRTY_DATASYNC); gfs2_trans_end(GFS2_SB(&ip->i_inode)); @@ -1106,7 +1106,7 @@ static int ea_remove_stuffed(struct gfs2_inode *ip, struct gfs2_ea_location *el) ea->ea_type = GFS2_EATYPE_UNUSED; } - ip->i_inode.i_ctime = current_time(&ip->i_inode); + inode_set_ctime_current(&ip->i_inode); __mark_inode_dirty(&ip->i_inode, I_DIRTY_DATASYNC); gfs2_trans_end(GFS2_SB(&ip->i_inode)); diff --git a/fs/hfs/Kconfig b/fs/hfs/Kconfig index d985066006d5..5ea5cd8ecea9 100644 --- a/fs/hfs/Kconfig +++ b/fs/hfs/Kconfig @@ -2,6 +2,7 @@ config HFS_FS tristate "Apple Macintosh file system support" depends on BLOCK + select BUFFER_HEAD select NLS select LEGACY_DIRECT_IO help diff --git a/fs/hfs/catalog.c b/fs/hfs/catalog.c index d365bf0b8c77..632c226a3972 100644 --- a/fs/hfs/catalog.c +++ b/fs/hfs/catalog.c @@ -133,7 +133,7 @@ int hfs_cat_create(u32 cnid, struct inode *dir, const struct qstr *str, struct i goto err1; dir->i_size++; - dir->i_mtime = dir->i_ctime = current_time(dir); + dir->i_mtime = inode_set_ctime_current(dir); mark_inode_dirty(dir); hfs_find_exit(&fd); return 0; @@ -269,7 +269,7 @@ int hfs_cat_delete(u32 cnid, struct inode *dir, const struct qstr *str) } dir->i_size--; - dir->i_mtime = dir->i_ctime = current_time(dir); + dir->i_mtime = inode_set_ctime_current(dir); mark_inode_dirty(dir); res = 0; out: @@ -337,7 +337,7 @@ int hfs_cat_move(u32 cnid, struct inode *src_dir, const struct qstr *src_name, if (err) goto out; dst_dir->i_size++; - dst_dir->i_mtime = dst_dir->i_ctime = current_time(dst_dir); + dst_dir->i_mtime = inode_set_ctime_current(dst_dir); mark_inode_dirty(dst_dir); /* finally remove the old entry */ @@ -349,7 +349,7 @@ int hfs_cat_move(u32 cnid, struct inode *src_dir, const struct qstr *src_name, if (err) goto out; src_dir->i_size--; - src_dir->i_mtime = src_dir->i_ctime = current_time(src_dir); + src_dir->i_mtime = inode_set_ctime_current(src_dir); mark_inode_dirty(src_dir); type = entry.type; diff --git a/fs/hfs/dir.c b/fs/hfs/dir.c index 3e1e3dcf0b48..b75c26045df4 100644 --- a/fs/hfs/dir.c +++ b/fs/hfs/dir.c @@ -263,7 +263,7 @@ static int hfs_remove(struct inode *dir, struct dentry *dentry) if (res) return res; clear_nlink(inode); - inode->i_ctime = current_time(inode); + inode_set_ctime_current(inode); hfs_delete_inode(inode); mark_inode_dirty(inode); return 0; diff --git a/fs/hfs/inode.c b/fs/hfs/inode.c index 441d7fc952e3..ee349b72cfb3 100644 --- a/fs/hfs/inode.c +++ b/fs/hfs/inode.c @@ -200,7 +200,7 @@ struct inode *hfs_new_inode(struct inode *dir, const struct qstr *name, umode_t inode->i_uid = current_fsuid(); inode->i_gid = current_fsgid(); set_nlink(inode, 1); - inode->i_mtime = inode->i_atime = inode->i_ctime = current_time(inode); + inode->i_mtime = inode->i_atime = inode_set_ctime_current(inode); HFS_I(inode)->flags = 0; HFS_I(inode)->rsrc_inode = NULL; HFS_I(inode)->fs_blocks = 0; @@ -355,8 +355,8 @@ static int hfs_read_inode(struct inode *inode, void *data) inode->i_mode |= S_IWUGO; inode->i_mode &= ~hsb->s_file_umask; inode->i_mode |= S_IFREG; - inode->i_ctime = inode->i_atime = inode->i_mtime = - hfs_m_to_utime(rec->file.MdDat); + inode->i_atime = inode->i_mtime = inode_set_ctime_to_ts(inode, + hfs_m_to_utime(rec->file.MdDat)); inode->i_op = &hfs_file_inode_operations; inode->i_fop = &hfs_file_operations; inode->i_mapping->a_ops = &hfs_aops; @@ -366,8 +366,8 @@ static int hfs_read_inode(struct inode *inode, void *data) inode->i_size = be16_to_cpu(rec->dir.Val) + 2; HFS_I(inode)->fs_blocks = 0; inode->i_mode = S_IFDIR | (S_IRWXUGO & ~hsb->s_dir_umask); - inode->i_ctime = inode->i_atime = inode->i_mtime = - hfs_m_to_utime(rec->dir.MdDat); + inode->i_atime = inode->i_mtime = inode_set_ctime_to_ts(inode, + hfs_m_to_utime(rec->dir.MdDat)); inode->i_op = &hfs_dir_inode_operations; inode->i_fop = &hfs_dir_operations; break; @@ -654,8 +654,7 @@ int hfs_inode_setattr(struct mnt_idmap *idmap, struct dentry *dentry, truncate_setsize(inode, attr->ia_size); hfs_file_truncate(inode); - inode->i_atime = inode->i_mtime = inode->i_ctime = - current_time(inode); + inode->i_atime = inode->i_mtime = inode_set_ctime_current(inode); } setattr_copy(&nop_mnt_idmap, inode, attr); diff --git a/fs/hfs/sysdep.c b/fs/hfs/sysdep.c index 2875961fdc10..dc27d418fbcd 100644 --- a/fs/hfs/sysdep.c +++ b/fs/hfs/sysdep.c @@ -28,7 +28,9 @@ static int hfs_revalidate_dentry(struct dentry *dentry, unsigned int flags) /* fix up inode on a timezone change */ diff = sys_tz.tz_minuteswest * 60 - HFS_I(inode)->tz_secondswest; if (diff) { - inode->i_ctime.tv_sec += diff; + struct timespec64 ctime = inode_get_ctime(inode); + + inode_set_ctime(inode, ctime.tv_sec + diff, ctime.tv_nsec); inode->i_atime.tv_sec += diff; inode->i_mtime.tv_sec += diff; HFS_I(inode)->tz_secondswest += diff; diff --git a/fs/hfsplus/Kconfig b/fs/hfsplus/Kconfig index 8034e7827a69..8ce4a33a9ac7 100644 --- a/fs/hfsplus/Kconfig +++ b/fs/hfsplus/Kconfig @@ -2,6 +2,7 @@ config HFSPLUS_FS tristate "Apple Extended HFS file system support" depends on BLOCK + select BUFFER_HEAD select NLS select NLS_UTF8 select LEGACY_DIRECT_IO diff --git a/fs/hfsplus/catalog.c b/fs/hfsplus/catalog.c index 35472cba750e..e71ae2537eaa 100644 --- a/fs/hfsplus/catalog.c +++ b/fs/hfsplus/catalog.c @@ -312,7 +312,7 @@ int hfsplus_create_cat(u32 cnid, struct inode *dir, dir->i_size++; if (S_ISDIR(inode->i_mode)) hfsplus_subfolders_inc(dir); - dir->i_mtime = dir->i_ctime = current_time(dir); + dir->i_mtime = inode_set_ctime_current(dir); hfsplus_mark_inode_dirty(dir, HFSPLUS_I_CAT_DIRTY); hfs_find_exit(&fd); @@ -417,7 +417,7 @@ int hfsplus_delete_cat(u32 cnid, struct inode *dir, const struct qstr *str) dir->i_size--; if (type == HFSPLUS_FOLDER) hfsplus_subfolders_dec(dir); - dir->i_mtime = dir->i_ctime = current_time(dir); + dir->i_mtime = inode_set_ctime_current(dir); hfsplus_mark_inode_dirty(dir, HFSPLUS_I_CAT_DIRTY); if (type == HFSPLUS_FILE || type == HFSPLUS_FOLDER) { @@ -494,7 +494,7 @@ int hfsplus_rename_cat(u32 cnid, dst_dir->i_size++; if (type == HFSPLUS_FOLDER) hfsplus_subfolders_inc(dst_dir); - dst_dir->i_mtime = dst_dir->i_ctime = current_time(dst_dir); + dst_dir->i_mtime = inode_set_ctime_current(dst_dir); /* finally remove the old entry */ err = hfsplus_cat_build_key(sb, src_fd.search_key, @@ -511,7 +511,7 @@ int hfsplus_rename_cat(u32 cnid, src_dir->i_size--; if (type == HFSPLUS_FOLDER) hfsplus_subfolders_dec(src_dir); - src_dir->i_mtime = src_dir->i_ctime = current_time(src_dir); + src_dir->i_mtime = inode_set_ctime_current(src_dir); /* remove old thread entry */ hfsplus_cat_build_key_with_cnid(sb, src_fd.search_key, cnid); diff --git a/fs/hfsplus/dir.c b/fs/hfsplus/dir.c index 56fb5f1312e7..f5c4b3e31a1c 100644 --- a/fs/hfsplus/dir.c +++ b/fs/hfsplus/dir.c @@ -346,7 +346,7 @@ static int hfsplus_link(struct dentry *src_dentry, struct inode *dst_dir, inc_nlink(inode); hfsplus_instantiate(dst_dentry, inode, cnid); ihold(inode); - inode->i_ctime = current_time(inode); + inode_set_ctime_current(inode); mark_inode_dirty(inode); sbi->file_count++; hfsplus_mark_mdb_dirty(dst_dir->i_sb); @@ -405,7 +405,7 @@ static int hfsplus_unlink(struct inode *dir, struct dentry *dentry) hfsplus_delete_inode(inode); } else sbi->file_count--; - inode->i_ctime = current_time(inode); + inode_set_ctime_current(inode); mark_inode_dirty(inode); out: mutex_unlock(&sbi->vh_mutex); @@ -426,7 +426,7 @@ static int hfsplus_rmdir(struct inode *dir, struct dentry *dentry) if (res) goto out; clear_nlink(inode); - inode->i_ctime = current_time(inode); + inode_set_ctime_current(inode); hfsplus_delete_inode(inode); mark_inode_dirty(inode); out: diff --git a/fs/hfsplus/extents.c b/fs/hfsplus/extents.c index 7a542f3dbe50..3c572e44f2ad 100644 --- a/fs/hfsplus/extents.c +++ b/fs/hfsplus/extents.c @@ -448,9 +448,9 @@ int hfsplus_file_extend(struct inode *inode, bool zeroout) if (sbi->alloc_file->i_size * 8 < sbi->total_blocks - sbi->free_blocks + 8) { /* extend alloc file */ - pr_err("extend alloc file! (%llu,%u,%u)\n", - sbi->alloc_file->i_size * 8, - sbi->total_blocks, sbi->free_blocks); + pr_err_ratelimited("extend alloc file! (%llu,%u,%u)\n", + sbi->alloc_file->i_size * 8, + sbi->total_blocks, sbi->free_blocks); return -ENOSPC; } diff --git a/fs/hfsplus/inode.c b/fs/hfsplus/inode.c index 7d1a675e037d..c65c8c4b03dd 100644 --- a/fs/hfsplus/inode.c +++ b/fs/hfsplus/inode.c @@ -267,7 +267,7 @@ static int hfsplus_setattr(struct mnt_idmap *idmap, } truncate_setsize(inode, attr->ia_size); hfsplus_file_truncate(inode); - inode->i_mtime = inode->i_ctime = current_time(inode); + inode->i_mtime = inode_set_ctime_current(inode); } setattr_copy(&nop_mnt_idmap, inode, attr); @@ -298,7 +298,7 @@ int hfsplus_getattr(struct mnt_idmap *idmap, const struct path *path, stat->attributes_mask |= STATX_ATTR_APPEND | STATX_ATTR_IMMUTABLE | STATX_ATTR_NODUMP; - generic_fillattr(&nop_mnt_idmap, inode, stat); + generic_fillattr(&nop_mnt_idmap, request_mask, inode, stat); return 0; } @@ -392,7 +392,7 @@ struct inode *hfsplus_new_inode(struct super_block *sb, struct inode *dir, inode->i_ino = sbi->next_cnid++; inode_init_owner(&nop_mnt_idmap, inode, dir, mode); set_nlink(inode, 1); - inode->i_mtime = inode->i_atime = inode->i_ctime = current_time(inode); + inode->i_mtime = inode->i_atime = inode_set_ctime_current(inode); hip = HFSPLUS_I(inode); INIT_LIST_HEAD(&hip->open_dir_list); @@ -523,7 +523,8 @@ int hfsplus_cat_read_inode(struct inode *inode, struct hfs_find_data *fd) inode->i_size = 2 + be32_to_cpu(folder->valence); inode->i_atime = hfsp_mt2ut(folder->access_date); inode->i_mtime = hfsp_mt2ut(folder->content_mod_date); - inode->i_ctime = hfsp_mt2ut(folder->attribute_mod_date); + inode_set_ctime_to_ts(inode, + hfsp_mt2ut(folder->attribute_mod_date)); HFSPLUS_I(inode)->create_date = folder->create_date; HFSPLUS_I(inode)->fs_blocks = 0; if (folder->flags & cpu_to_be16(HFSPLUS_HAS_FOLDER_COUNT)) { @@ -564,7 +565,8 @@ int hfsplus_cat_read_inode(struct inode *inode, struct hfs_find_data *fd) } inode->i_atime = hfsp_mt2ut(file->access_date); inode->i_mtime = hfsp_mt2ut(file->content_mod_date); - inode->i_ctime = hfsp_mt2ut(file->attribute_mod_date); + inode_set_ctime_to_ts(inode, + hfsp_mt2ut(file->attribute_mod_date)); HFSPLUS_I(inode)->create_date = file->create_date; } else { pr_err("bad catalog entry used to create inode\n"); @@ -609,7 +611,7 @@ int hfsplus_cat_write_inode(struct inode *inode) hfsplus_cat_set_perms(inode, &folder->permissions); folder->access_date = hfsp_ut2mt(inode->i_atime); folder->content_mod_date = hfsp_ut2mt(inode->i_mtime); - folder->attribute_mod_date = hfsp_ut2mt(inode->i_ctime); + folder->attribute_mod_date = hfsp_ut2mt(inode_get_ctime(inode)); folder->valence = cpu_to_be32(inode->i_size - 2); if (folder->flags & cpu_to_be16(HFSPLUS_HAS_FOLDER_COUNT)) { folder->subfolders = @@ -644,7 +646,7 @@ int hfsplus_cat_write_inode(struct inode *inode) file->flags &= cpu_to_be16(~HFSPLUS_FILE_LOCKED); file->access_date = hfsp_ut2mt(inode->i_atime); file->content_mod_date = hfsp_ut2mt(inode->i_mtime); - file->attribute_mod_date = hfsp_ut2mt(inode->i_ctime); + file->attribute_mod_date = hfsp_ut2mt(inode_get_ctime(inode)); hfs_bnode_write(fd.bnode, &entry, fd.entryoffset, sizeof(struct hfsplus_cat_file)); } @@ -700,7 +702,7 @@ int hfsplus_fileattr_set(struct mnt_idmap *idmap, else hip->userflags &= ~HFSPLUS_FLG_NODUMP; - inode->i_ctime = current_time(inode); + inode_set_ctime_current(inode); mark_inode_dirty(inode); return 0; diff --git a/fs/hostfs/hostfs_kern.c b/fs/hostfs/hostfs_kern.c index 46387090eb76..dc5a5cea5fae 100644 --- a/fs/hostfs/hostfs_kern.c +++ b/fs/hostfs/hostfs_kern.c @@ -517,8 +517,7 @@ static int hostfs_inode_update(struct inode *ino, const struct hostfs_stat *st) (struct timespec64){ st->atime.tv_sec, st->atime.tv_nsec }; ino->i_mtime = (struct timespec64){ st->mtime.tv_sec, st->mtime.tv_nsec }; - ino->i_ctime = - (struct timespec64){ st->ctime.tv_sec, st->ctime.tv_nsec }; + inode_set_ctime(ino, st->ctime.tv_sec, st->ctime.tv_nsec); ino->i_size = st->size; ino->i_blocks = st->blocks; return 0; diff --git a/fs/hpfs/Kconfig b/fs/hpfs/Kconfig index ec975f466877..ac1e9318e65a 100644 --- a/fs/hpfs/Kconfig +++ b/fs/hpfs/Kconfig @@ -2,6 +2,7 @@ config HPFS_FS tristate "OS/2 HPFS file system support" depends on BLOCK + select BUFFER_HEAD select FS_IOMAP help OS/2 is IBM's operating system for PC's, the same as Warp, and HPFS diff --git a/fs/hpfs/dir.c b/fs/hpfs/dir.c index f32f15669996..f36566d61215 100644 --- a/fs/hpfs/dir.c +++ b/fs/hpfs/dir.c @@ -277,10 +277,10 @@ struct dentry *hpfs_lookup(struct inode *dir, struct dentry *dentry, unsigned in * inode. */ - if (!result->i_ctime.tv_sec) { - if (!(result->i_ctime.tv_sec = local_to_gmt(dir->i_sb, le32_to_cpu(de->creation_date)))) - result->i_ctime.tv_sec = 1; - result->i_ctime.tv_nsec = 0; + if (!inode_get_ctime(result).tv_sec) { + time64_t csec = local_to_gmt(dir->i_sb, le32_to_cpu(de->creation_date)); + + inode_set_ctime(result, csec ? csec : 1, 0); result->i_mtime.tv_sec = local_to_gmt(dir->i_sb, le32_to_cpu(de->write_date)); result->i_mtime.tv_nsec = 0; result->i_atime.tv_sec = local_to_gmt(dir->i_sb, le32_to_cpu(de->read_date)); diff --git a/fs/hpfs/inode.c b/fs/hpfs/inode.c index e50e92a42432..479166378bae 100644 --- a/fs/hpfs/inode.c +++ b/fs/hpfs/inode.c @@ -36,7 +36,7 @@ void hpfs_init_inode(struct inode *i) hpfs_inode->i_rddir_off = NULL; hpfs_inode->i_dirty = 0; - i->i_ctime.tv_sec = i->i_ctime.tv_nsec = 0; + inode_set_ctime(i, 0, 0); i->i_mtime.tv_sec = i->i_mtime.tv_nsec = 0; i->i_atime.tv_sec = i->i_atime.tv_nsec = 0; } @@ -232,7 +232,7 @@ void hpfs_write_inode_nolock(struct inode *i) if (de) { de->write_date = cpu_to_le32(gmt_to_local(i->i_sb, i->i_mtime.tv_sec)); de->read_date = cpu_to_le32(gmt_to_local(i->i_sb, i->i_atime.tv_sec)); - de->creation_date = cpu_to_le32(gmt_to_local(i->i_sb, i->i_ctime.tv_sec)); + de->creation_date = cpu_to_le32(gmt_to_local(i->i_sb, inode_get_ctime(i).tv_sec)); de->read_only = !(i->i_mode & 0222); de->ea_size = cpu_to_le32(hpfs_inode->i_ea_size); hpfs_mark_4buffers_dirty(&qbh); @@ -242,7 +242,7 @@ void hpfs_write_inode_nolock(struct inode *i) if ((de = map_dirent(i, hpfs_inode->i_dno, "\001\001", 2, NULL, &qbh))) { de->write_date = cpu_to_le32(gmt_to_local(i->i_sb, i->i_mtime.tv_sec)); de->read_date = cpu_to_le32(gmt_to_local(i->i_sb, i->i_atime.tv_sec)); - de->creation_date = cpu_to_le32(gmt_to_local(i->i_sb, i->i_ctime.tv_sec)); + de->creation_date = cpu_to_le32(gmt_to_local(i->i_sb, inode_get_ctime(i).tv_sec)); de->read_only = !(i->i_mode & 0222); de->ea_size = cpu_to_le32(/*hpfs_inode->i_ea_size*/0); de->file_size = cpu_to_le32(0); diff --git a/fs/hpfs/namei.c b/fs/hpfs/namei.c index 69fb40b2c99a..f4eb8d6f5989 100644 --- a/fs/hpfs/namei.c +++ b/fs/hpfs/namei.c @@ -13,10 +13,9 @@ static void hpfs_update_directory_times(struct inode *dir) { time64_t t = local_to_gmt(dir->i_sb, local_get_seconds(dir->i_sb)); if (t == dir->i_mtime.tv_sec && - t == dir->i_ctime.tv_sec) + t == inode_get_ctime(dir).tv_sec) return; - dir->i_mtime.tv_sec = dir->i_ctime.tv_sec = t; - dir->i_mtime.tv_nsec = dir->i_ctime.tv_nsec = 0; + dir->i_mtime = inode_set_ctime(dir, t, 0); hpfs_write_inode_nolock(dir); } @@ -59,10 +58,8 @@ static int hpfs_mkdir(struct mnt_idmap *idmap, struct inode *dir, result->i_ino = fno; hpfs_i(result)->i_parent_dir = dir->i_ino; hpfs_i(result)->i_dno = dno; - result->i_ctime.tv_sec = result->i_mtime.tv_sec = result->i_atime.tv_sec = local_to_gmt(dir->i_sb, le32_to_cpu(dee.creation_date)); - result->i_ctime.tv_nsec = 0; - result->i_mtime.tv_nsec = 0; - result->i_atime.tv_nsec = 0; + result->i_mtime = result->i_atime = + inode_set_ctime(result, local_to_gmt(dir->i_sb, le32_to_cpu(dee.creation_date)), 0); hpfs_i(result)->i_ea_size = 0; result->i_mode |= S_IFDIR; result->i_op = &hpfs_dir_iops; @@ -167,10 +164,8 @@ static int hpfs_create(struct mnt_idmap *idmap, struct inode *dir, result->i_fop = &hpfs_file_ops; set_nlink(result, 1); hpfs_i(result)->i_parent_dir = dir->i_ino; - result->i_ctime.tv_sec = result->i_mtime.tv_sec = result->i_atime.tv_sec = local_to_gmt(dir->i_sb, le32_to_cpu(dee.creation_date)); - result->i_ctime.tv_nsec = 0; - result->i_mtime.tv_nsec = 0; - result->i_atime.tv_nsec = 0; + result->i_mtime = result->i_atime = + inode_set_ctime(result, local_to_gmt(dir->i_sb, le32_to_cpu(dee.creation_date)), 0); hpfs_i(result)->i_ea_size = 0; if (dee.read_only) result->i_mode &= ~0222; @@ -250,10 +245,8 @@ static int hpfs_mknod(struct mnt_idmap *idmap, struct inode *dir, hpfs_init_inode(result); result->i_ino = fno; hpfs_i(result)->i_parent_dir = dir->i_ino; - result->i_ctime.tv_sec = result->i_mtime.tv_sec = result->i_atime.tv_sec = local_to_gmt(dir->i_sb, le32_to_cpu(dee.creation_date)); - result->i_ctime.tv_nsec = 0; - result->i_mtime.tv_nsec = 0; - result->i_atime.tv_nsec = 0; + result->i_mtime = result->i_atime = + inode_set_ctime(result, local_to_gmt(dir->i_sb, le32_to_cpu(dee.creation_date)), 0); hpfs_i(result)->i_ea_size = 0; result->i_uid = current_fsuid(); result->i_gid = current_fsgid(); @@ -326,10 +319,8 @@ static int hpfs_symlink(struct mnt_idmap *idmap, struct inode *dir, result->i_ino = fno; hpfs_init_inode(result); hpfs_i(result)->i_parent_dir = dir->i_ino; - result->i_ctime.tv_sec = result->i_mtime.tv_sec = result->i_atime.tv_sec = local_to_gmt(dir->i_sb, le32_to_cpu(dee.creation_date)); - result->i_ctime.tv_nsec = 0; - result->i_mtime.tv_nsec = 0; - result->i_atime.tv_nsec = 0; + result->i_mtime = result->i_atime = + inode_set_ctime(result, local_to_gmt(dir->i_sb, le32_to_cpu(dee.creation_date)), 0); hpfs_i(result)->i_ea_size = 0; result->i_mode = S_IFLNK | 0777; result->i_uid = current_fsuid(); diff --git a/fs/hpfs/super.c b/fs/hpfs/super.c index 1cb89595b875..758a51564124 100644 --- a/fs/hpfs/super.c +++ b/fs/hpfs/super.c @@ -729,8 +729,9 @@ static int hpfs_fill_super(struct super_block *s, void *options, int silent) root->i_atime.tv_nsec = 0; root->i_mtime.tv_sec = local_to_gmt(s, le32_to_cpu(de->write_date)); root->i_mtime.tv_nsec = 0; - root->i_ctime.tv_sec = local_to_gmt(s, le32_to_cpu(de->creation_date)); - root->i_ctime.tv_nsec = 0; + inode_set_ctime(root, + local_to_gmt(s, le32_to_cpu(de->creation_date)), + 0); hpfs_i(root)->i_ea_size = le32_to_cpu(de->ea_size); hpfs_i(root)->i_parent_dir = root->i_ino; if (root->i_size == -1) diff --git a/fs/hugetlbfs/inode.c b/fs/hugetlbfs/inode.c index e7611ae1e612..316c4cebd3f3 100644 --- a/fs/hugetlbfs/inode.c +++ b/fs/hugetlbfs/inode.c @@ -932,7 +932,7 @@ static long hugetlbfs_fallocate(struct file *file, int mode, loff_t offset, if (!(mode & FALLOC_FL_KEEP_SIZE) && offset + len > inode->i_size) i_size_write(inode, offset + len); - inode->i_ctime = current_time(inode); + inode_set_ctime_current(inode); out: inode_unlock(inode); return error; @@ -980,7 +980,7 @@ static struct inode *hugetlbfs_get_root(struct super_block *sb, inode->i_mode = S_IFDIR | ctx->mode; inode->i_uid = ctx->uid; inode->i_gid = ctx->gid; - inode->i_atime = inode->i_mtime = inode->i_ctime = current_time(inode); + inode->i_atime = inode->i_mtime = inode_set_ctime_current(inode); inode->i_op = &hugetlbfs_dir_inode_operations; inode->i_fop = &simple_dir_operations; /* directory inodes start off with i_nlink == 2 (for "." entry) */ @@ -1024,7 +1024,7 @@ static struct inode *hugetlbfs_get_inode(struct super_block *sb, lockdep_set_class(&inode->i_mapping->i_mmap_rwsem, &hugetlbfs_i_mmap_rwsem_key); inode->i_mapping->a_ops = &hugetlbfs_aops; - inode->i_atime = inode->i_mtime = inode->i_ctime = current_time(inode); + inode->i_atime = inode->i_mtime = inode_set_ctime_current(inode); inode->i_mapping->private_data = resv_map; info->seals = F_SEAL_SEAL; switch (mode & S_IFMT) { @@ -1067,7 +1067,7 @@ static int hugetlbfs_mknod(struct mnt_idmap *idmap, struct inode *dir, inode = hugetlbfs_get_inode(dir->i_sb, dir, mode, dev); if (!inode) return -ENOSPC; - dir->i_ctime = dir->i_mtime = current_time(dir); + dir->i_mtime = inode_set_ctime_current(dir); d_instantiate(dentry, inode); dget(dentry);/* Extra count - pin the dentry in core */ return 0; @@ -1099,7 +1099,7 @@ static int hugetlbfs_tmpfile(struct mnt_idmap *idmap, inode = hugetlbfs_get_inode(dir->i_sb, dir, mode | S_IFREG, 0); if (!inode) return -ENOSPC; - dir->i_ctime = dir->i_mtime = current_time(dir); + dir->i_mtime = inode_set_ctime_current(dir); d_tmpfile(file, inode); return finish_open_simple(file, 0); } @@ -1121,7 +1121,7 @@ static int hugetlbfs_symlink(struct mnt_idmap *idmap, } else iput(inode); } - dir->i_ctime = dir->i_mtime = current_time(dir); + dir->i_mtime = inode_set_ctime_current(dir); return error; } diff --git a/fs/inode.c b/fs/inode.c index 8fefb69e1f84..35fd688168c5 100644 --- a/fs/inode.c +++ b/fs/inode.c @@ -16,7 +16,6 @@ #include <linux/fsnotify.h> #include <linux/mount.h> #include <linux/posix_acl.h> -#include <linux/prefetch.h> #include <linux/buffer_head.h> /* for inode_has_buffers */ #include <linux/ratelimit.h> #include <linux/list_lru.h> @@ -752,16 +751,11 @@ EXPORT_SYMBOL_GPL(evict_inodes); /** * invalidate_inodes - attempt to free all inodes on a superblock * @sb: superblock to operate on - * @kill_dirty: flag to guide handling of dirty inodes * - * Attempts to free all inodes for a given superblock. If there were any - * busy inodes return a non-zero value, else zero. - * If @kill_dirty is set, discard dirty inodes too, otherwise treat - * them as busy. + * Attempts to free all inodes (including dirty inodes) for a given superblock. */ -int invalidate_inodes(struct super_block *sb, bool kill_dirty) +void invalidate_inodes(struct super_block *sb) { - int busy = 0; struct inode *inode, *next; LIST_HEAD(dispose); @@ -773,14 +767,8 @@ again: spin_unlock(&inode->i_lock); continue; } - if (inode->i_state & I_DIRTY_ALL && !kill_dirty) { - spin_unlock(&inode->i_lock); - busy = 1; - continue; - } if (atomic_read(&inode->i_count)) { spin_unlock(&inode->i_lock); - busy = 1; continue; } @@ -798,8 +786,6 @@ again: spin_unlock(&sb->s_inode_list_lock); dispose_list(&dispose); - - return busy; } /* @@ -1041,8 +1027,6 @@ struct inode *new_inode(struct super_block *sb) { struct inode *inode; - spin_lock_prefetch(&sb->s_inode_list_lock); - inode = new_inode_pseudo(sb); if (inode) inode_sb_list_add(inode); @@ -1853,6 +1837,7 @@ EXPORT_SYMBOL(bmap); static int relatime_need_update(struct vfsmount *mnt, struct inode *inode, struct timespec64 now) { + struct timespec64 ctime; if (!(mnt->mnt_flags & MNT_RELATIME)) return 1; @@ -1864,7 +1849,8 @@ static int relatime_need_update(struct vfsmount *mnt, struct inode *inode, /* * Is ctime younger than or equal to atime? If yes, update atime: */ - if (timespec64_compare(&inode->i_ctime, &inode->i_atime) >= 0) + ctime = inode_get_ctime(inode); + if (timespec64_compare(&ctime, &inode->i_atime) >= 0) return 1; /* @@ -1879,29 +1865,76 @@ static int relatime_need_update(struct vfsmount *mnt, struct inode *inode, return 0; } -int generic_update_time(struct inode *inode, struct timespec64 *time, int flags) +/** + * inode_update_timestamps - update the timestamps on the inode + * @inode: inode to be updated + * @flags: S_* flags that needed to be updated + * + * The update_time function is called when an inode's timestamps need to be + * updated for a read or write operation. This function handles updating the + * actual timestamps. It's up to the caller to ensure that the inode is marked + * dirty appropriately. + * + * In the case where any of S_MTIME, S_CTIME, or S_VERSION need to be updated, + * attempt to update all three of them. S_ATIME updates can be handled + * independently of the rest. + * + * Returns a set of S_* flags indicating which values changed. + */ +int inode_update_timestamps(struct inode *inode, int flags) { - int dirty_flags = 0; + int updated = 0; + struct timespec64 now; - if (flags & (S_ATIME | S_CTIME | S_MTIME)) { - if (flags & S_ATIME) - inode->i_atime = *time; - if (flags & S_CTIME) - inode->i_ctime = *time; - if (flags & S_MTIME) - inode->i_mtime = *time; - - if (inode->i_sb->s_flags & SB_LAZYTIME) - dirty_flags |= I_DIRTY_TIME; - else - dirty_flags |= I_DIRTY_SYNC; + if (flags & (S_MTIME|S_CTIME|S_VERSION)) { + struct timespec64 ctime = inode_get_ctime(inode); + + now = inode_set_ctime_current(inode); + if (!timespec64_equal(&now, &ctime)) + updated |= S_CTIME; + if (!timespec64_equal(&now, &inode->i_mtime)) { + inode->i_mtime = now; + updated |= S_MTIME; + } + if (IS_I_VERSION(inode) && inode_maybe_inc_iversion(inode, updated)) + updated |= S_VERSION; + } else { + now = current_time(inode); } - if ((flags & S_VERSION) && inode_maybe_inc_iversion(inode, false)) - dirty_flags |= I_DIRTY_SYNC; + if (flags & S_ATIME) { + if (!timespec64_equal(&now, &inode->i_atime)) { + inode->i_atime = now; + updated |= S_ATIME; + } + } + return updated; +} +EXPORT_SYMBOL(inode_update_timestamps); +/** + * generic_update_time - update the timestamps on the inode + * @inode: inode to be updated + * @flags: S_* flags that needed to be updated + * + * The update_time function is called when an inode's timestamps need to be + * updated for a read or write operation. In the case where any of S_MTIME, S_CTIME, + * or S_VERSION need to be updated we attempt to update all three of them. S_ATIME + * updates can be handled done independently of the rest. + * + * Returns a S_* mask indicating which fields were updated. + */ +int generic_update_time(struct inode *inode, int flags) +{ + int updated = inode_update_timestamps(inode, flags); + int dirty_flags = 0; + + if (updated & (S_ATIME|S_MTIME|S_CTIME)) + dirty_flags = inode->i_sb->s_flags & SB_LAZYTIME ? I_DIRTY_TIME : I_DIRTY_SYNC; + if (updated & S_VERSION) + dirty_flags |= I_DIRTY_SYNC; __mark_inode_dirty(inode, dirty_flags); - return 0; + return updated; } EXPORT_SYMBOL(generic_update_time); @@ -1909,11 +1942,12 @@ EXPORT_SYMBOL(generic_update_time); * This does the actual work of updating an inodes time or version. Must have * had called mnt_want_write() before calling this. */ -int inode_update_time(struct inode *inode, struct timespec64 *time, int flags) +int inode_update_time(struct inode *inode, int flags) { if (inode->i_op->update_time) - return inode->i_op->update_time(inode, time, flags); - return generic_update_time(inode, time, flags); + return inode->i_op->update_time(inode, flags); + generic_update_time(inode, flags); + return 0; } EXPORT_SYMBOL(inode_update_time); @@ -1965,7 +1999,6 @@ void touch_atime(const struct path *path) { struct vfsmount *mnt = path->mnt; struct inode *inode = d_inode(path->dentry); - struct timespec64 now; if (!atime_needs_update(path, inode)) return; @@ -1984,8 +2017,7 @@ void touch_atime(const struct path *path) * We may also fail on filesystems that have the ability to make parts * of the fs read only, e.g. subvolumes in Btrfs. */ - now = current_time(inode); - inode_update_time(inode, &now, S_ATIME); + inode_update_time(inode, S_ATIME); __mnt_drop_write(mnt); skip_update: sb_end_write(inode->i_sb); @@ -2070,18 +2102,63 @@ int file_remove_privs(struct file *file) } EXPORT_SYMBOL(file_remove_privs); -static int inode_needs_update_time(struct inode *inode, struct timespec64 *now) +/** + * current_mgtime - Return FS time (possibly fine-grained) + * @inode: inode. + * + * Return the current time truncated to the time granularity supported by + * the fs, as suitable for a ctime/mtime change. If the ctime is flagged + * as having been QUERIED, get a fine-grained timestamp. + */ +struct timespec64 current_mgtime(struct inode *inode) +{ + struct timespec64 now, ctime; + atomic_long_t *pnsec = (atomic_long_t *)&inode->__i_ctime.tv_nsec; + long nsec = atomic_long_read(pnsec); + + if (nsec & I_CTIME_QUERIED) { + ktime_get_real_ts64(&now); + return timestamp_truncate(now, inode); + } + + ktime_get_coarse_real_ts64(&now); + now = timestamp_truncate(now, inode); + + /* + * If we've recently fetched a fine-grained timestamp + * then the coarse-grained one may still be earlier than the + * existing ctime. Just keep the existing value if so. + */ + ctime = inode_get_ctime(inode); + if (timespec64_compare(&ctime, &now) > 0) + now = ctime; + + return now; +} +EXPORT_SYMBOL(current_mgtime); + +static struct timespec64 current_ctime(struct inode *inode) +{ + if (is_mgtime(inode)) + return current_mgtime(inode); + return current_time(inode); +} + +static int inode_needs_update_time(struct inode *inode) { int sync_it = 0; + struct timespec64 now = current_ctime(inode); + struct timespec64 ctime; /* First try to exhaust all avenues to not sync */ if (IS_NOCMTIME(inode)) return 0; - if (!timespec64_equal(&inode->i_mtime, now)) + if (!timespec64_equal(&inode->i_mtime, &now)) sync_it = S_MTIME; - if (!timespec64_equal(&inode->i_ctime, now)) + ctime = inode_get_ctime(inode); + if (!timespec64_equal(&ctime, &now)) sync_it |= S_CTIME; if (IS_I_VERSION(inode) && inode_iversion_need_inc(inode)) @@ -2090,15 +2167,14 @@ static int inode_needs_update_time(struct inode *inode, struct timespec64 *now) return sync_it; } -static int __file_update_time(struct file *file, struct timespec64 *now, - int sync_mode) +static int __file_update_time(struct file *file, int sync_mode) { int ret = 0; struct inode *inode = file_inode(file); /* try to update time settings */ if (!__mnt_want_write_file(file)) { - ret = inode_update_time(inode, now, sync_mode); + ret = inode_update_time(inode, sync_mode); __mnt_drop_write_file(file); } @@ -2123,13 +2199,12 @@ int file_update_time(struct file *file) { int ret; struct inode *inode = file_inode(file); - struct timespec64 now = current_time(inode); - ret = inode_needs_update_time(inode, &now); + ret = inode_needs_update_time(inode); if (ret <= 0) return ret; - return __file_update_time(file, &now, ret); + return __file_update_time(file, ret); } EXPORT_SYMBOL(file_update_time); @@ -2152,7 +2227,6 @@ static int file_modified_flags(struct file *file, int flags) { int ret; struct inode *inode = file_inode(file); - struct timespec64 now = current_time(inode); /* * Clear the security bits if the process is not being run by root. @@ -2165,13 +2239,13 @@ static int file_modified_flags(struct file *file, int flags) if (unlikely(file->f_mode & FMODE_NOCMTIME)) return 0; - ret = inode_needs_update_time(inode, &now); + ret = inode_needs_update_time(inode); if (ret <= 0) return ret; if (flags & IOCB_NOWAIT) return -EAGAIN; - return __file_update_time(file, &now, ret); + return __file_update_time(file, ret); } /** @@ -2491,15 +2565,59 @@ struct timespec64 current_time(struct inode *inode) struct timespec64 now; ktime_get_coarse_real_ts64(&now); + return timestamp_truncate(now, inode); +} +EXPORT_SYMBOL(current_time); - if (unlikely(!inode->i_sb)) { - WARN(1, "current_time() called with uninitialized super_block in the inode"); +/** + * inode_set_ctime_current - set the ctime to current_time + * @inode: inode + * + * Set the inode->i_ctime to the current value for the inode. Returns + * the current value that was assigned to i_ctime. + */ +struct timespec64 inode_set_ctime_current(struct inode *inode) +{ + struct timespec64 now; + struct timespec64 ctime; + + ctime.tv_nsec = READ_ONCE(inode->__i_ctime.tv_nsec); + if (!(ctime.tv_nsec & I_CTIME_QUERIED)) { + now = current_time(inode); + + /* Just copy it into place if it's not multigrain */ + if (!is_mgtime(inode)) { + inode_set_ctime_to_ts(inode, now); + return now; + } + + /* + * If we've recently updated with a fine-grained timestamp, + * then the coarse-grained one may still be earlier than the + * existing ctime. Just keep the existing value if so. + */ + ctime.tv_sec = inode->__i_ctime.tv_sec; + if (timespec64_compare(&ctime, &now) > 0) + return ctime; + + /* + * Ctime updates are usually protected by the inode_lock, but + * we can still race with someone setting the QUERIED flag. + * Try to swap the new nsec value into place. If it's changed + * in the interim, then just go with a fine-grained timestamp. + */ + if (cmpxchg(&inode->__i_ctime.tv_nsec, ctime.tv_nsec, + now.tv_nsec) != ctime.tv_nsec) + goto fine_grained; + inode->__i_ctime.tv_sec = now.tv_sec; return now; } - - return timestamp_truncate(now, inode); +fine_grained: + ktime_get_real_ts64(&now); + inode_set_ctime_to_ts(inode, timestamp_truncate(now, inode)); + return now; } -EXPORT_SYMBOL(current_time); +EXPORT_SYMBOL(inode_set_ctime_current); /** * in_group_or_capable - check whether caller is CAP_FSETID privileged diff --git a/fs/internal.h b/fs/internal.h index f7a3dc111026..d64ae03998cc 100644 --- a/fs/internal.h +++ b/fs/internal.h @@ -23,16 +23,10 @@ struct mnt_idmap; */ #ifdef CONFIG_BLOCK extern void __init bdev_cache_init(void); - -void emergency_thaw_bdev(struct super_block *sb); #else static inline void bdev_cache_init(void) { } -static inline int emergency_thaw_bdev(struct super_block *sb) -{ - return 0; -} #endif /* CONFIG_BLOCK */ /* @@ -115,7 +109,7 @@ static inline void put_file_access(struct file *file) * super.c */ extern int reconfigure_super(struct fs_context *); -extern bool trylock_super(struct super_block *sb); +extern bool super_trylock_shared(struct super_block *sb); struct super_block *user_get_super(dev_t, bool excl); void put_super(struct super_block *sb); extern bool mount_capable(struct fs_context *); @@ -201,7 +195,7 @@ void lock_two_inodes(struct inode *inode1, struct inode *inode2, * fs-writeback.c */ extern long get_nr_dirty_inodes(void); -extern int invalidate_inodes(struct super_block *, bool); +void invalidate_inodes(struct super_block *sb); /* * dcache.c diff --git a/fs/ioctl.c b/fs/ioctl.c index 5b2481cd4750..f5fd99d6b0d4 100644 --- a/fs/ioctl.c +++ b/fs/ioctl.c @@ -109,9 +109,6 @@ static int ioctl_fibmap(struct file *filp, int __user *p) * Returns 0 on success, -errno on error, 1 if this was the last * extent that will fit in user array. */ -#define SET_UNKNOWN_FLAGS (FIEMAP_EXTENT_DELALLOC) -#define SET_NO_UNMOUNTED_IO_FLAGS (FIEMAP_EXTENT_DATA_ENCRYPTED) -#define SET_NOT_ALIGNED_FLAGS (FIEMAP_EXTENT_DATA_TAIL|FIEMAP_EXTENT_DATA_INLINE) int fiemap_fill_next_extent(struct fiemap_extent_info *fieinfo, u64 logical, u64 phys, u64 len, u32 flags) { @@ -127,6 +124,10 @@ int fiemap_fill_next_extent(struct fiemap_extent_info *fieinfo, u64 logical, if (fieinfo->fi_extents_mapped >= fieinfo->fi_extents_max) return 1; +#define SET_UNKNOWN_FLAGS (FIEMAP_EXTENT_DELALLOC) +#define SET_NO_UNMOUNTED_IO_FLAGS (FIEMAP_EXTENT_DATA_ENCRYPTED) +#define SET_NOT_ALIGNED_FLAGS (FIEMAP_EXTENT_DATA_TAIL|FIEMAP_EXTENT_DATA_INLINE) + if (flags & SET_UNKNOWN_FLAGS) flags |= FIEMAP_EXTENT_UNKNOWN; if (flags & SET_NO_UNMOUNTED_IO_FLAGS) @@ -396,8 +397,8 @@ static int ioctl_fsfreeze(struct file *filp) /* Freeze */ if (sb->s_op->freeze_super) - return sb->s_op->freeze_super(sb); - return freeze_super(sb); + return sb->s_op->freeze_super(sb, FREEZE_HOLDER_USERSPACE); + return freeze_super(sb, FREEZE_HOLDER_USERSPACE); } static int ioctl_fsthaw(struct file *filp) @@ -409,8 +410,8 @@ static int ioctl_fsthaw(struct file *filp) /* Thaw */ if (sb->s_op->thaw_super) - return sb->s_op->thaw_super(sb); - return thaw_super(sb); + return sb->s_op->thaw_super(sb, FREEZE_HOLDER_USERSPACE); + return thaw_super(sb, FREEZE_HOLDER_USERSPACE); } static int ioctl_file_dedupe_range(struct file *file, @@ -877,6 +878,9 @@ out: #ifdef CONFIG_COMPAT /** * compat_ptr_ioctl - generic implementation of .compat_ioctl file operation + * @file: The file to operate on. + * @cmd: The ioctl command number. + * @arg: The argument to the ioctl. * * This is not normally called as a function, but instead set in struct * file_operations as diff --git a/fs/iomap/buffered-io.c b/fs/iomap/buffered-io.c index aa8967cca1a3..ae8673ce08b1 100644 --- a/fs/iomap/buffered-io.c +++ b/fs/iomap/buffered-io.c @@ -23,65 +23,169 @@ #define IOEND_BATCH_SIZE 4096 +typedef int (*iomap_punch_t)(struct inode *inode, loff_t offset, loff_t length); /* - * Structure allocated for each folio when block size < folio size - * to track sub-folio uptodate status and I/O completions. + * Structure allocated for each folio to track per-block uptodate, dirty state + * and I/O completions. */ -struct iomap_page { +struct iomap_folio_state { atomic_t read_bytes_pending; atomic_t write_bytes_pending; - spinlock_t uptodate_lock; - unsigned long uptodate[]; + spinlock_t state_lock; + + /* + * Each block has two bits in this bitmap: + * Bits [0..blocks_per_folio) has the uptodate status. + * Bits [b_p_f...(2*b_p_f)) has the dirty status. + */ + unsigned long state[]; }; -static inline struct iomap_page *to_iomap_page(struct folio *folio) +static struct bio_set iomap_ioend_bioset; + +static inline bool ifs_is_fully_uptodate(struct folio *folio, + struct iomap_folio_state *ifs) { - if (folio_test_private(folio)) - return folio_get_private(folio); - return NULL; + struct inode *inode = folio->mapping->host; + + return bitmap_full(ifs->state, i_blocks_per_folio(inode, folio)); } -static struct bio_set iomap_ioend_bioset; +static inline bool ifs_block_is_uptodate(struct iomap_folio_state *ifs, + unsigned int block) +{ + return test_bit(block, ifs->state); +} + +static void ifs_set_range_uptodate(struct folio *folio, + struct iomap_folio_state *ifs, size_t off, size_t len) +{ + struct inode *inode = folio->mapping->host; + unsigned int first_blk = off >> inode->i_blkbits; + unsigned int last_blk = (off + len - 1) >> inode->i_blkbits; + unsigned int nr_blks = last_blk - first_blk + 1; + unsigned long flags; + + spin_lock_irqsave(&ifs->state_lock, flags); + bitmap_set(ifs->state, first_blk, nr_blks); + if (ifs_is_fully_uptodate(folio, ifs)) + folio_mark_uptodate(folio); + spin_unlock_irqrestore(&ifs->state_lock, flags); +} + +static void iomap_set_range_uptodate(struct folio *folio, size_t off, + size_t len) +{ + struct iomap_folio_state *ifs = folio->private; + + if (ifs) + ifs_set_range_uptodate(folio, ifs, off, len); + else + folio_mark_uptodate(folio); +} + +static inline bool ifs_block_is_dirty(struct folio *folio, + struct iomap_folio_state *ifs, int block) +{ + struct inode *inode = folio->mapping->host; + unsigned int blks_per_folio = i_blocks_per_folio(inode, folio); + + return test_bit(block + blks_per_folio, ifs->state); +} + +static void ifs_clear_range_dirty(struct folio *folio, + struct iomap_folio_state *ifs, size_t off, size_t len) +{ + struct inode *inode = folio->mapping->host; + unsigned int blks_per_folio = i_blocks_per_folio(inode, folio); + unsigned int first_blk = (off >> inode->i_blkbits); + unsigned int last_blk = (off + len - 1) >> inode->i_blkbits; + unsigned int nr_blks = last_blk - first_blk + 1; + unsigned long flags; -static struct iomap_page * -iomap_page_create(struct inode *inode, struct folio *folio, unsigned int flags) + spin_lock_irqsave(&ifs->state_lock, flags); + bitmap_clear(ifs->state, first_blk + blks_per_folio, nr_blks); + spin_unlock_irqrestore(&ifs->state_lock, flags); +} + +static void iomap_clear_range_dirty(struct folio *folio, size_t off, size_t len) { - struct iomap_page *iop = to_iomap_page(folio); + struct iomap_folio_state *ifs = folio->private; + + if (ifs) + ifs_clear_range_dirty(folio, ifs, off, len); +} + +static void ifs_set_range_dirty(struct folio *folio, + struct iomap_folio_state *ifs, size_t off, size_t len) +{ + struct inode *inode = folio->mapping->host; + unsigned int blks_per_folio = i_blocks_per_folio(inode, folio); + unsigned int first_blk = (off >> inode->i_blkbits); + unsigned int last_blk = (off + len - 1) >> inode->i_blkbits; + unsigned int nr_blks = last_blk - first_blk + 1; + unsigned long flags; + + spin_lock_irqsave(&ifs->state_lock, flags); + bitmap_set(ifs->state, first_blk + blks_per_folio, nr_blks); + spin_unlock_irqrestore(&ifs->state_lock, flags); +} + +static void iomap_set_range_dirty(struct folio *folio, size_t off, size_t len) +{ + struct iomap_folio_state *ifs = folio->private; + + if (ifs) + ifs_set_range_dirty(folio, ifs, off, len); +} + +static struct iomap_folio_state *ifs_alloc(struct inode *inode, + struct folio *folio, unsigned int flags) +{ + struct iomap_folio_state *ifs = folio->private; unsigned int nr_blocks = i_blocks_per_folio(inode, folio); gfp_t gfp; - if (iop || nr_blocks <= 1) - return iop; + if (ifs || nr_blocks <= 1) + return ifs; if (flags & IOMAP_NOWAIT) gfp = GFP_NOWAIT; else gfp = GFP_NOFS | __GFP_NOFAIL; - iop = kzalloc(struct_size(iop, uptodate, BITS_TO_LONGS(nr_blocks)), - gfp); - if (iop) { - spin_lock_init(&iop->uptodate_lock); - if (folio_test_uptodate(folio)) - bitmap_fill(iop->uptodate, nr_blocks); - folio_attach_private(folio, iop); - } - return iop; + /* + * ifs->state tracks two sets of state flags when the + * filesystem block size is smaller than the folio size. + * The first state tracks per-block uptodate and the + * second tracks per-block dirty state. + */ + ifs = kzalloc(struct_size(ifs, state, + BITS_TO_LONGS(2 * nr_blocks)), gfp); + if (!ifs) + return ifs; + + spin_lock_init(&ifs->state_lock); + if (folio_test_uptodate(folio)) + bitmap_set(ifs->state, 0, nr_blocks); + if (folio_test_dirty(folio)) + bitmap_set(ifs->state, nr_blocks, nr_blocks); + folio_attach_private(folio, ifs); + + return ifs; } -static void iomap_page_release(struct folio *folio) +static void ifs_free(struct folio *folio) { - struct iomap_page *iop = folio_detach_private(folio); - struct inode *inode = folio->mapping->host; - unsigned int nr_blocks = i_blocks_per_folio(inode, folio); + struct iomap_folio_state *ifs = folio_detach_private(folio); - if (!iop) + if (!ifs) return; - WARN_ON_ONCE(atomic_read(&iop->read_bytes_pending)); - WARN_ON_ONCE(atomic_read(&iop->write_bytes_pending)); - WARN_ON_ONCE(bitmap_full(iop->uptodate, nr_blocks) != + WARN_ON_ONCE(atomic_read(&ifs->read_bytes_pending)); + WARN_ON_ONCE(atomic_read(&ifs->write_bytes_pending)); + WARN_ON_ONCE(ifs_is_fully_uptodate(folio, ifs) != folio_test_uptodate(folio)); - kfree(iop); + kfree(ifs); } /* @@ -90,7 +194,7 @@ static void iomap_page_release(struct folio *folio) static void iomap_adjust_read_range(struct inode *inode, struct folio *folio, loff_t *pos, loff_t length, size_t *offp, size_t *lenp) { - struct iomap_page *iop = to_iomap_page(folio); + struct iomap_folio_state *ifs = folio->private; loff_t orig_pos = *pos; loff_t isize = i_size_read(inode); unsigned block_bits = inode->i_blkbits; @@ -105,12 +209,12 @@ static void iomap_adjust_read_range(struct inode *inode, struct folio *folio, * per-block uptodate status and adjust the offset and length if needed * to avoid reading in already uptodate ranges. */ - if (iop) { + if (ifs) { unsigned int i; /* move forward for each leading block marked uptodate */ for (i = first; i <= last; i++) { - if (!test_bit(i, iop->uptodate)) + if (!ifs_block_is_uptodate(ifs, i)) break; *pos += block_size; poff += block_size; @@ -120,7 +224,7 @@ static void iomap_adjust_read_range(struct inode *inode, struct folio *folio, /* truncate len if we find any trailing uptodate block(s) */ for ( ; i <= last; i++) { - if (test_bit(i, iop->uptodate)) { + if (ifs_block_is_uptodate(ifs, i)) { plen -= (last - i + 1) * block_size; last = i - 1; break; @@ -144,43 +248,19 @@ static void iomap_adjust_read_range(struct inode *inode, struct folio *folio, *lenp = plen; } -static void iomap_iop_set_range_uptodate(struct folio *folio, - struct iomap_page *iop, size_t off, size_t len) -{ - struct inode *inode = folio->mapping->host; - unsigned first = off >> inode->i_blkbits; - unsigned last = (off + len - 1) >> inode->i_blkbits; - unsigned long flags; - - spin_lock_irqsave(&iop->uptodate_lock, flags); - bitmap_set(iop->uptodate, first, last - first + 1); - if (bitmap_full(iop->uptodate, i_blocks_per_folio(inode, folio))) - folio_mark_uptodate(folio); - spin_unlock_irqrestore(&iop->uptodate_lock, flags); -} - -static void iomap_set_range_uptodate(struct folio *folio, - struct iomap_page *iop, size_t off, size_t len) -{ - if (iop) - iomap_iop_set_range_uptodate(folio, iop, off, len); - else - folio_mark_uptodate(folio); -} - static void iomap_finish_folio_read(struct folio *folio, size_t offset, size_t len, int error) { - struct iomap_page *iop = to_iomap_page(folio); + struct iomap_folio_state *ifs = folio->private; if (unlikely(error)) { folio_clear_uptodate(folio); folio_set_error(folio); } else { - iomap_set_range_uptodate(folio, iop, offset, len); + iomap_set_range_uptodate(folio, offset, len); } - if (!iop || atomic_sub_and_test(len, &iop->read_bytes_pending)) + if (!ifs || atomic_sub_and_test(len, &ifs->read_bytes_pending)) folio_unlock(folio); } @@ -213,7 +293,6 @@ struct iomap_readpage_ctx { static int iomap_read_inline_data(const struct iomap_iter *iter, struct folio *folio) { - struct iomap_page *iop; const struct iomap *iomap = iomap_iter_srcmap(iter); size_t size = i_size_read(iter->inode) - iomap->offset; size_t poff = offset_in_page(iomap->offset); @@ -231,15 +310,13 @@ static int iomap_read_inline_data(const struct iomap_iter *iter, if (WARN_ON_ONCE(size > iomap->length)) return -EIO; if (offset > 0) - iop = iomap_page_create(iter->inode, folio, iter->flags); - else - iop = to_iomap_page(folio); + ifs_alloc(iter->inode, folio, iter->flags); addr = kmap_local_folio(folio, offset); memcpy(addr, iomap->inline_data, size); memset(addr + size, 0, PAGE_SIZE - poff - size); kunmap_local(addr); - iomap_set_range_uptodate(folio, iop, offset, PAGE_SIZE - poff); + iomap_set_range_uptodate(folio, offset, PAGE_SIZE - poff); return 0; } @@ -260,7 +337,7 @@ static loff_t iomap_readpage_iter(const struct iomap_iter *iter, loff_t pos = iter->pos + offset; loff_t length = iomap_length(iter) - offset; struct folio *folio = ctx->cur_folio; - struct iomap_page *iop; + struct iomap_folio_state *ifs; loff_t orig_pos = pos; size_t poff, plen; sector_t sector; @@ -269,20 +346,20 @@ static loff_t iomap_readpage_iter(const struct iomap_iter *iter, return iomap_read_inline_data(iter, folio); /* zero post-eof blocks as the page may be mapped */ - iop = iomap_page_create(iter->inode, folio, iter->flags); + ifs = ifs_alloc(iter->inode, folio, iter->flags); iomap_adjust_read_range(iter->inode, folio, &pos, length, &poff, &plen); if (plen == 0) goto done; if (iomap_block_needs_zeroing(iter, pos)) { folio_zero_range(folio, poff, plen); - iomap_set_range_uptodate(folio, iop, poff, plen); + iomap_set_range_uptodate(folio, poff, plen); goto done; } ctx->cur_folio_in_bio = true; - if (iop) - atomic_add(plen, &iop->read_bytes_pending); + if (ifs) + atomic_add(plen, &ifs->read_bytes_pending); sector = iomap_sector(iomap, pos); if (!ctx->bio || @@ -436,11 +513,11 @@ EXPORT_SYMBOL_GPL(iomap_readahead); */ bool iomap_is_partially_uptodate(struct folio *folio, size_t from, size_t count) { - struct iomap_page *iop = to_iomap_page(folio); + struct iomap_folio_state *ifs = folio->private; struct inode *inode = folio->mapping->host; unsigned first, last, i; - if (!iop) + if (!ifs) return false; /* Caller's range may extend past the end of this folio */ @@ -451,7 +528,7 @@ bool iomap_is_partially_uptodate(struct folio *folio, size_t from, size_t count) last = (from + count - 1) >> inode->i_blkbits; for (i = first; i <= last; i++) - if (!test_bit(i, iop->uptodate)) + if (!ifs_block_is_uptodate(ifs, i)) return false; return true; } @@ -461,16 +538,18 @@ EXPORT_SYMBOL_GPL(iomap_is_partially_uptodate); * iomap_get_folio - get a folio reference for writing * @iter: iteration structure * @pos: start offset of write + * @len: Suggested size of folio to create. * * Returns a locked reference to the folio at @pos, or an error pointer if the * folio could not be obtained. */ -struct folio *iomap_get_folio(struct iomap_iter *iter, loff_t pos) +struct folio *iomap_get_folio(struct iomap_iter *iter, loff_t pos, size_t len) { - unsigned fgp = FGP_WRITEBEGIN | FGP_NOFS; + fgf_t fgp = FGP_WRITEBEGIN | FGP_NOFS; if (iter->flags & IOMAP_NOWAIT) fgp |= FGP_NOWAIT; + fgp |= fgf_set_order(len); return __filemap_get_folio(iter->inode->i_mapping, pos >> PAGE_SHIFT, fgp, mapping_gfp_mask(iter->inode->i_mapping)); @@ -483,14 +562,13 @@ bool iomap_release_folio(struct folio *folio, gfp_t gfp_flags) folio_size(folio)); /* - * mm accommodates an old ext3 case where clean folios might - * not have had the dirty bit cleared. Thus, it can send actual - * dirty folios to ->release_folio() via shrink_active_list(); - * skip those here. + * If the folio is dirty, we refuse to release our metadata because + * it may be partially dirty. Once we track per-block dirty state, + * we can release the metadata if every block is dirty. */ - if (folio_test_dirty(folio) || folio_test_writeback(folio)) + if (folio_test_dirty(folio)) return false; - iomap_page_release(folio); + ifs_free(folio); return true; } EXPORT_SYMBOL_GPL(iomap_release_folio); @@ -507,16 +585,22 @@ void iomap_invalidate_folio(struct folio *folio, size_t offset, size_t len) if (offset == 0 && len == folio_size(folio)) { WARN_ON_ONCE(folio_test_writeback(folio)); folio_cancel_dirty(folio); - iomap_page_release(folio); - } else if (folio_test_large(folio)) { - /* Must release the iop so the page can be split */ - WARN_ON_ONCE(!folio_test_uptodate(folio) && - folio_test_dirty(folio)); - iomap_page_release(folio); + ifs_free(folio); } } EXPORT_SYMBOL_GPL(iomap_invalidate_folio); +bool iomap_dirty_folio(struct address_space *mapping, struct folio *folio) +{ + struct inode *inode = mapping->host; + size_t len = folio_size(folio); + + ifs_alloc(inode, folio, 0); + iomap_set_range_dirty(folio, 0, len); + return filemap_dirty_folio(mapping, folio); +} +EXPORT_SYMBOL_GPL(iomap_dirty_folio); + static void iomap_write_failed(struct inode *inode, loff_t pos, unsigned len) { @@ -547,7 +631,7 @@ static int __iomap_write_begin(const struct iomap_iter *iter, loff_t pos, size_t len, struct folio *folio) { const struct iomap *srcmap = iomap_iter_srcmap(iter); - struct iomap_page *iop; + struct iomap_folio_state *ifs; loff_t block_size = i_blocksize(iter->inode); loff_t block_start = round_down(pos, block_size); loff_t block_end = round_up(pos + len, block_size); @@ -555,14 +639,23 @@ static int __iomap_write_begin(const struct iomap_iter *iter, loff_t pos, size_t from = offset_in_folio(folio, pos), to = from + len; size_t poff, plen; - if (folio_test_uptodate(folio)) + /* + * If the write completely overlaps the current folio, then + * entire folio will be dirtied so there is no need for + * per-block state tracking structures to be attached to this folio. + */ + if (pos <= folio_pos(folio) && + pos + len >= folio_pos(folio) + folio_size(folio)) return 0; - folio_clear_error(folio); - iop = iomap_page_create(iter->inode, folio, iter->flags); - if ((iter->flags & IOMAP_NOWAIT) && !iop && nr_blocks > 1) + ifs = ifs_alloc(iter->inode, folio, iter->flags); + if ((iter->flags & IOMAP_NOWAIT) && !ifs && nr_blocks > 1) return -EAGAIN; + if (folio_test_uptodate(folio)) + return 0; + folio_clear_error(folio); + do { iomap_adjust_read_range(iter->inode, folio, &block_start, block_end - block_start, &poff, &plen); @@ -589,7 +682,7 @@ static int __iomap_write_begin(const struct iomap_iter *iter, loff_t pos, if (status) return status; } - iomap_set_range_uptodate(folio, iop, poff, plen); + iomap_set_range_uptodate(folio, poff, plen); } while ((block_start += plen) < block_end); return 0; @@ -603,7 +696,7 @@ static struct folio *__iomap_get_folio(struct iomap_iter *iter, loff_t pos, if (folio_ops && folio_ops->get_folio) return folio_ops->get_folio(iter, pos, len); else - return iomap_get_folio(iter, pos); + return iomap_get_folio(iter, pos, len); } static void __iomap_put_folio(struct iomap_iter *iter, loff_t pos, size_t ret, @@ -696,7 +789,6 @@ out_unlock: static size_t __iomap_write_end(struct inode *inode, loff_t pos, size_t len, size_t copied, struct folio *folio) { - struct iomap_page *iop = to_iomap_page(folio); flush_dcache_folio(folio); /* @@ -712,7 +804,8 @@ static size_t __iomap_write_end(struct inode *inode, loff_t pos, size_t len, */ if (unlikely(copied < len && !folio_test_uptodate(folio))) return 0; - iomap_set_range_uptodate(folio, iop, offset_in_folio(folio, pos), len); + iomap_set_range_uptodate(folio, offset_in_folio(folio, pos), len); + iomap_set_range_dirty(folio, offset_in_folio(folio, pos), copied); filemap_dirty_folio(inode->i_mapping, folio); return copied; } @@ -773,6 +866,7 @@ static size_t iomap_write_end(struct iomap_iter *iter, loff_t pos, size_t len, static loff_t iomap_write_iter(struct iomap_iter *iter, struct iov_iter *i) { loff_t length = iomap_length(iter); + size_t chunk = PAGE_SIZE << MAX_PAGECACHE_ORDER; loff_t pos = iter->pos; ssize_t written = 0; long status = 0; @@ -781,15 +875,12 @@ static loff_t iomap_write_iter(struct iomap_iter *iter, struct iov_iter *i) do { struct folio *folio; - struct page *page; - unsigned long offset; /* Offset into pagecache page */ - unsigned long bytes; /* Bytes to write to page */ + size_t offset; /* Offset into folio */ + size_t bytes; /* Bytes to write to folio */ size_t copied; /* Bytes copied from user */ - offset = offset_in_page(pos); - bytes = min_t(unsigned long, PAGE_SIZE - offset, - iov_iter_count(i)); -again: + offset = pos & (chunk - 1); + bytes = min(chunk - offset, iov_iter_count(i)); status = balance_dirty_pages_ratelimited_flags(mapping, bdp_flags); if (unlikely(status)) @@ -819,12 +910,14 @@ again: if (iter->iomap.flags & IOMAP_F_STALE) break; - page = folio_file_page(folio, pos >> PAGE_SHIFT); - if (mapping_writably_mapped(mapping)) - flush_dcache_page(page); + offset = offset_in_folio(folio, pos); + if (bytes > folio_size(folio) - offset) + bytes = folio_size(folio) - offset; - copied = copy_page_from_iter_atomic(page, offset, bytes, i); + if (mapping_writably_mapped(mapping)) + flush_dcache_folio(folio); + copied = copy_folio_from_iter_atomic(folio, offset, bytes, i); status = iomap_write_end(iter, pos, bytes, copied, folio); if (unlikely(copied != status)) @@ -840,11 +933,13 @@ again: */ if (copied) bytes = copied; - goto again; + if (chunk > PAGE_SIZE) + chunk /= 2; + } else { + pos += status; + written += status; + length -= status; } - pos += status; - written += status; - length -= status; } while (iov_iter_count(i) && length); if (status == -EAGAIN) { @@ -880,6 +975,76 @@ iomap_file_buffered_write(struct kiocb *iocb, struct iov_iter *i, } EXPORT_SYMBOL_GPL(iomap_file_buffered_write); +static int iomap_write_delalloc_ifs_punch(struct inode *inode, + struct folio *folio, loff_t start_byte, loff_t end_byte, + iomap_punch_t punch) +{ + unsigned int first_blk, last_blk, i; + loff_t last_byte; + u8 blkbits = inode->i_blkbits; + struct iomap_folio_state *ifs; + int ret = 0; + + /* + * When we have per-block dirty tracking, there can be + * blocks within a folio which are marked uptodate + * but not dirty. In that case it is necessary to punch + * out such blocks to avoid leaking any delalloc blocks. + */ + ifs = folio->private; + if (!ifs) + return ret; + + last_byte = min_t(loff_t, end_byte - 1, + folio_pos(folio) + folio_size(folio) - 1); + first_blk = offset_in_folio(folio, start_byte) >> blkbits; + last_blk = offset_in_folio(folio, last_byte) >> blkbits; + for (i = first_blk; i <= last_blk; i++) { + if (!ifs_block_is_dirty(folio, ifs, i)) { + ret = punch(inode, folio_pos(folio) + (i << blkbits), + 1 << blkbits); + if (ret) + return ret; + } + } + + return ret; +} + + +static int iomap_write_delalloc_punch(struct inode *inode, struct folio *folio, + loff_t *punch_start_byte, loff_t start_byte, loff_t end_byte, + iomap_punch_t punch) +{ + int ret = 0; + + if (!folio_test_dirty(folio)) + return ret; + + /* if dirty, punch up to offset */ + if (start_byte > *punch_start_byte) { + ret = punch(inode, *punch_start_byte, + start_byte - *punch_start_byte); + if (ret) + return ret; + } + + /* Punch non-dirty blocks within folio */ + ret = iomap_write_delalloc_ifs_punch(inode, folio, start_byte, + end_byte, punch); + if (ret) + return ret; + + /* + * Make sure the next punch start is correctly bound to + * the end of this data range, not the end of the folio. + */ + *punch_start_byte = min_t(loff_t, end_byte, + folio_pos(folio) + folio_size(folio)); + + return ret; +} + /* * Scan the data range passed to us for dirty page cache folios. If we find a * dirty folio, punch out the preceeding range and update the offset from which @@ -899,10 +1064,11 @@ EXPORT_SYMBOL_GPL(iomap_file_buffered_write); */ static int iomap_write_delalloc_scan(struct inode *inode, loff_t *punch_start_byte, loff_t start_byte, loff_t end_byte, - int (*punch)(struct inode *inode, loff_t offset, loff_t length)) + iomap_punch_t punch) { while (start_byte < end_byte) { struct folio *folio; + int ret; /* grab locked page */ folio = filemap_lock_folio(inode->i_mapping, @@ -913,26 +1079,12 @@ static int iomap_write_delalloc_scan(struct inode *inode, continue; } - /* if dirty, punch up to offset */ - if (folio_test_dirty(folio)) { - if (start_byte > *punch_start_byte) { - int error; - - error = punch(inode, *punch_start_byte, - start_byte - *punch_start_byte); - if (error) { - folio_unlock(folio); - folio_put(folio); - return error; - } - } - - /* - * Make sure the next punch start is correctly bound to - * the end of this data range, not the end of the folio. - */ - *punch_start_byte = min_t(loff_t, end_byte, - folio_next_index(folio) << PAGE_SHIFT); + ret = iomap_write_delalloc_punch(inode, folio, punch_start_byte, + start_byte, end_byte, punch); + if (ret) { + folio_unlock(folio); + folio_put(folio); + return ret; } /* move offset to start of next folio in range */ @@ -977,8 +1129,7 @@ static int iomap_write_delalloc_scan(struct inode *inode, * the code to subtle off-by-one bugs.... */ static int iomap_write_delalloc_release(struct inode *inode, - loff_t start_byte, loff_t end_byte, - int (*punch)(struct inode *inode, loff_t pos, loff_t length)) + loff_t start_byte, loff_t end_byte, iomap_punch_t punch) { loff_t punch_start_byte = start_byte; loff_t scan_end_byte = min(i_size_read(inode), end_byte); @@ -1071,8 +1222,7 @@ out_unlock: */ int iomap_file_buffered_write_punch_delalloc(struct inode *inode, struct iomap *iomap, loff_t pos, loff_t length, - ssize_t written, - int (*punch)(struct inode *inode, loff_t pos, loff_t length)) + ssize_t written, iomap_punch_t punch) { loff_t start_byte; loff_t end_byte; @@ -1286,24 +1436,24 @@ vm_fault_t iomap_page_mkwrite(struct vm_fault *vmf, const struct iomap_ops *ops) return VM_FAULT_LOCKED; out_unlock: folio_unlock(folio); - return block_page_mkwrite_return(ret); + return vmf_fs_error(ret); } EXPORT_SYMBOL_GPL(iomap_page_mkwrite); static void iomap_finish_folio_write(struct inode *inode, struct folio *folio, size_t len, int error) { - struct iomap_page *iop = to_iomap_page(folio); + struct iomap_folio_state *ifs = folio->private; if (error) { folio_set_error(folio); mapping_set_error(inode->i_mapping, error); } - WARN_ON_ONCE(i_blocks_per_folio(inode, folio) > 1 && !iop); - WARN_ON_ONCE(iop && atomic_read(&iop->write_bytes_pending) <= 0); + WARN_ON_ONCE(i_blocks_per_folio(inode, folio) > 1 && !ifs); + WARN_ON_ONCE(ifs && atomic_read(&ifs->write_bytes_pending) <= 0); - if (!iop || atomic_sub_and_test(len, &iop->write_bytes_pending)) + if (!ifs || atomic_sub_and_test(len, &ifs->write_bytes_pending)) folio_end_writeback(folio); } @@ -1570,7 +1720,7 @@ iomap_can_add_to_ioend(struct iomap_writepage_ctx *wpc, loff_t offset, */ static void iomap_add_to_ioend(struct inode *inode, loff_t pos, struct folio *folio, - struct iomap_page *iop, struct iomap_writepage_ctx *wpc, + struct iomap_folio_state *ifs, struct iomap_writepage_ctx *wpc, struct writeback_control *wbc, struct list_head *iolist) { sector_t sector = iomap_sector(&wpc->iomap, pos); @@ -1588,8 +1738,8 @@ iomap_add_to_ioend(struct inode *inode, loff_t pos, struct folio *folio, bio_add_folio_nofail(wpc->ioend->io_bio, folio, len, poff); } - if (iop) - atomic_add(len, &iop->write_bytes_pending); + if (ifs) + atomic_add(len, &ifs->write_bytes_pending); wpc->ioend->io_size += len; wbc_account_cgroup_owner(wbc, &folio->page, len); } @@ -1615,7 +1765,7 @@ iomap_writepage_map(struct iomap_writepage_ctx *wpc, struct writeback_control *wbc, struct inode *inode, struct folio *folio, u64 end_pos) { - struct iomap_page *iop = iomap_page_create(inode, folio, 0); + struct iomap_folio_state *ifs = folio->private; struct iomap_ioend *ioend, *next; unsigned len = i_blocksize(inode); unsigned nblocks = i_blocks_per_folio(inode, folio); @@ -1623,7 +1773,14 @@ iomap_writepage_map(struct iomap_writepage_ctx *wpc, int error = 0, count = 0, i; LIST_HEAD(submit_list); - WARN_ON_ONCE(iop && atomic_read(&iop->write_bytes_pending) != 0); + WARN_ON_ONCE(end_pos <= pos); + + if (!ifs && nblocks > 1) { + ifs = ifs_alloc(inode, folio, 0); + iomap_set_range_dirty(folio, 0, end_pos - pos); + } + + WARN_ON_ONCE(ifs && atomic_read(&ifs->write_bytes_pending) != 0); /* * Walk through the folio to find areas to write back. If we @@ -1631,7 +1788,7 @@ iomap_writepage_map(struct iomap_writepage_ctx *wpc, * invalid, grab a new one. */ for (i = 0; i < nblocks && pos < end_pos; i++, pos += len) { - if (iop && !test_bit(i, iop->uptodate)) + if (ifs && !ifs_block_is_dirty(folio, ifs, i)) continue; error = wpc->ops->map_blocks(wpc, inode, pos); @@ -1642,7 +1799,7 @@ iomap_writepage_map(struct iomap_writepage_ctx *wpc, continue; if (wpc->iomap.type == IOMAP_HOLE) continue; - iomap_add_to_ioend(inode, pos, folio, iop, wpc, wbc, + iomap_add_to_ioend(inode, pos, folio, ifs, wpc, wbc, &submit_list); count++; } @@ -1675,6 +1832,12 @@ iomap_writepage_map(struct iomap_writepage_ctx *wpc, } } + /* + * We can have dirty bits set past end of file in page_mkwrite path + * while mapping the last partial folio. Hence it's better to clear + * all the dirty bits in the folio here. + */ + iomap_clear_range_dirty(folio, 0, folio_size(folio)); folio_start_writeback(folio); folio_unlock(folio); diff --git a/fs/iomap/direct-io.c b/fs/iomap/direct-io.c index ea3b868c8355..bcd3f8cf5ea4 100644 --- a/fs/iomap/direct-io.c +++ b/fs/iomap/direct-io.c @@ -20,10 +20,12 @@ * Private flags for iomap_dio, must not overlap with the public ones in * iomap.h: */ -#define IOMAP_DIO_WRITE_FUA (1 << 28) -#define IOMAP_DIO_NEED_SYNC (1 << 29) -#define IOMAP_DIO_WRITE (1 << 30) -#define IOMAP_DIO_DIRTY (1 << 31) +#define IOMAP_DIO_CALLER_COMP (1U << 26) +#define IOMAP_DIO_INLINE_COMP (1U << 27) +#define IOMAP_DIO_WRITE_THROUGH (1U << 28) +#define IOMAP_DIO_NEED_SYNC (1U << 29) +#define IOMAP_DIO_WRITE (1U << 30) +#define IOMAP_DIO_DIRTY (1U << 31) struct iomap_dio { struct kiocb *iocb; @@ -41,7 +43,6 @@ struct iomap_dio { struct { struct iov_iter *iter; struct task_struct *waiter; - struct bio *poll_bio; } submit; /* used for aio completion: */ @@ -63,12 +64,14 @@ static struct bio *iomap_dio_alloc_bio(const struct iomap_iter *iter, static void iomap_dio_submit_bio(const struct iomap_iter *iter, struct iomap_dio *dio, struct bio *bio, loff_t pos) { + struct kiocb *iocb = dio->iocb; + atomic_inc(&dio->ref); /* Sync dio can't be polled reliably */ - if ((dio->iocb->ki_flags & IOCB_HIPRI) && !is_sync_kiocb(dio->iocb)) { - bio_set_polled(bio, dio->iocb); - dio->submit.poll_bio = bio; + if ((iocb->ki_flags & IOCB_HIPRI) && !is_sync_kiocb(iocb)) { + bio_set_polled(bio, iocb); + WRITE_ONCE(iocb->private, bio); } if (dio->dops && dio->dops->submit_io) @@ -130,6 +133,11 @@ ssize_t iomap_dio_complete(struct iomap_dio *dio) } EXPORT_SYMBOL_GPL(iomap_dio_complete); +static ssize_t iomap_dio_deferred_complete(void *data) +{ + return iomap_dio_complete(data); +} + static void iomap_dio_complete_work(struct work_struct *work) { struct iomap_dio *dio = container_of(work, struct iomap_dio, aio.work); @@ -152,27 +160,69 @@ void iomap_dio_bio_end_io(struct bio *bio) { struct iomap_dio *dio = bio->bi_private; bool should_dirty = (dio->flags & IOMAP_DIO_DIRTY); + struct kiocb *iocb = dio->iocb; if (bio->bi_status) iomap_dio_set_error(dio, blk_status_to_errno(bio->bi_status)); + if (!atomic_dec_and_test(&dio->ref)) + goto release_bio; - if (atomic_dec_and_test(&dio->ref)) { - if (dio->wait_for_completion) { - struct task_struct *waiter = dio->submit.waiter; - WRITE_ONCE(dio->submit.waiter, NULL); - blk_wake_io_task(waiter); - } else if (dio->flags & IOMAP_DIO_WRITE) { - struct inode *inode = file_inode(dio->iocb->ki_filp); - - WRITE_ONCE(dio->iocb->private, NULL); - INIT_WORK(&dio->aio.work, iomap_dio_complete_work); - queue_work(inode->i_sb->s_dio_done_wq, &dio->aio.work); - } else { - WRITE_ONCE(dio->iocb->private, NULL); - iomap_dio_complete_work(&dio->aio.work); - } + /* + * Synchronous dio, task itself will handle any completion work + * that needs after IO. All we need to do is wake the task. + */ + if (dio->wait_for_completion) { + struct task_struct *waiter = dio->submit.waiter; + + WRITE_ONCE(dio->submit.waiter, NULL); + blk_wake_io_task(waiter); + goto release_bio; + } + + /* + * Flagged with IOMAP_DIO_INLINE_COMP, we can complete it inline + */ + if (dio->flags & IOMAP_DIO_INLINE_COMP) { + WRITE_ONCE(iocb->private, NULL); + iomap_dio_complete_work(&dio->aio.work); + goto release_bio; + } + + /* + * If this dio is flagged with IOMAP_DIO_CALLER_COMP, then schedule + * our completion that way to avoid an async punt to a workqueue. + */ + if (dio->flags & IOMAP_DIO_CALLER_COMP) { + /* only polled IO cares about private cleared */ + iocb->private = dio; + iocb->dio_complete = iomap_dio_deferred_complete; + + /* + * Invoke ->ki_complete() directly. We've assigned our + * dio_complete callback handler, and since the issuer set + * IOCB_DIO_CALLER_COMP, we know their ki_complete handler will + * notice ->dio_complete being set and will defer calling that + * handler until it can be done from a safe task context. + * + * Note that the 'res' being passed in here is not important + * for this case. The actual completion value of the request + * will be gotten from dio_complete when that is run by the + * issuer. + */ + iocb->ki_complete(iocb, 0); + goto release_bio; } + /* + * Async DIO completion that requires filesystem level completion work + * gets punted to a work queue to complete as the operation may require + * more IO to be issued to finalise filesystem metadata changes or + * guarantee data integrity. + */ + INIT_WORK(&dio->aio.work, iomap_dio_complete_work); + queue_work(file_inode(iocb->ki_filp)->i_sb->s_dio_done_wq, + &dio->aio.work); +release_bio: if (should_dirty) { bio_check_pages_dirty(bio); } else { @@ -203,7 +253,7 @@ static void iomap_dio_zero(const struct iomap_iter *iter, struct iomap_dio *dio, /* * Figure out the bio's operation flags from the dio request, the * mapping, and whether or not we want FUA. Note that we can end up - * clearing the WRITE_FUA flag in the dio request. + * clearing the WRITE_THROUGH flag in the dio request. */ static inline blk_opf_t iomap_dio_bio_opflags(struct iomap_dio *dio, const struct iomap *iomap, bool use_fua) @@ -217,7 +267,7 @@ static inline blk_opf_t iomap_dio_bio_opflags(struct iomap_dio *dio, if (use_fua) opflags |= REQ_FUA; else - dio->flags &= ~IOMAP_DIO_WRITE_FUA; + dio->flags &= ~IOMAP_DIO_WRITE_THROUGH; return opflags; } @@ -257,12 +307,19 @@ static loff_t iomap_dio_bio_iter(const struct iomap_iter *iter, * Use a FUA write if we need datasync semantics, this is a pure * data IO that doesn't require any metadata updates (including * after IO completion such as unwritten extent conversion) and - * the underlying device supports FUA. This allows us to avoid - * cache flushes on IO completion. + * the underlying device either supports FUA or doesn't have + * a volatile write cache. This allows us to avoid cache flushes + * on IO completion. If we can't use writethrough and need to + * sync, disable in-task completions as dio completion will + * need to call generic_write_sync() which will do a blocking + * fsync / cache flush call. */ if (!(iomap->flags & (IOMAP_F_SHARED|IOMAP_F_DIRTY)) && - (dio->flags & IOMAP_DIO_WRITE_FUA) && bdev_fua(iomap->bdev)) + (dio->flags & IOMAP_DIO_WRITE_THROUGH) && + (bdev_fua(iomap->bdev) || !bdev_write_cache(iomap->bdev))) use_fua = true; + else if (dio->flags & IOMAP_DIO_NEED_SYNC) + dio->flags &= ~IOMAP_DIO_CALLER_COMP; } /* @@ -277,10 +334,23 @@ static loff_t iomap_dio_bio_iter(const struct iomap_iter *iter, goto out; /* - * We can only poll for single bio I/Os. + * We can only do deferred completion for pure overwrites that + * don't require additional IO at completion. This rules out + * writes that need zeroing or extent conversion, extend + * the file size, or issue journal IO or cache flushes + * during completion processing. */ if (need_zeroout || + ((dio->flags & IOMAP_DIO_NEED_SYNC) && !use_fua) || ((dio->flags & IOMAP_DIO_WRITE) && pos >= i_size_read(inode))) + dio->flags &= ~IOMAP_DIO_CALLER_COMP; + + /* + * The rules for polled IO completions follow the guidelines as the + * ones we set for inline and deferred completions. If none of those + * are available for this IO, clear the polled flag. + */ + if (!(dio->flags & (IOMAP_DIO_INLINE_COMP|IOMAP_DIO_CALLER_COMP))) dio->iocb->ki_flags &= ~IOCB_HIPRI; if (need_zeroout) { @@ -505,12 +575,14 @@ __iomap_dio_rw(struct kiocb *iocb, struct iov_iter *iter, dio->submit.iter = iter; dio->submit.waiter = current; - dio->submit.poll_bio = NULL; if (iocb->ki_flags & IOCB_NOWAIT) iomi.flags |= IOMAP_NOWAIT; if (iov_iter_rw(iter) == READ) { + /* reads can always complete inline */ + dio->flags |= IOMAP_DIO_INLINE_COMP; + if (iomi.pos >= dio->i_size) goto out_free_dio; @@ -524,6 +596,15 @@ __iomap_dio_rw(struct kiocb *iocb, struct iov_iter *iter, iomi.flags |= IOMAP_WRITE; dio->flags |= IOMAP_DIO_WRITE; + /* + * Flag as supporting deferred completions, if the issuer + * groks it. This can avoid a workqueue punt for writes. + * We may later clear this flag if we need to do other IO + * as part of this IO completion. + */ + if (iocb->ki_flags & IOCB_DIO_CALLER_COMP) + dio->flags |= IOMAP_DIO_CALLER_COMP; + if (dio_flags & IOMAP_DIO_OVERWRITE_ONLY) { ret = -EAGAIN; if (iomi.pos >= dio->i_size || @@ -537,13 +618,16 @@ __iomap_dio_rw(struct kiocb *iocb, struct iov_iter *iter, dio->flags |= IOMAP_DIO_NEED_SYNC; /* - * For datasync only writes, we optimistically try - * using FUA for this IO. Any non-FUA write that - * occurs will clear this flag, hence we know before - * completion whether a cache flush is necessary. + * For datasync only writes, we optimistically try using + * WRITE_THROUGH for this IO. This flag requires either + * FUA writes through the device's write cache, or a + * normal write to a device without a volatile write + * cache. For the former, Any non-FUA write that occurs + * will clear this flag, hence we know before completion + * whether a cache flush is necessary. */ if (!(iocb->ki_flags & IOCB_SYNC)) - dio->flags |= IOMAP_DIO_WRITE_FUA; + dio->flags |= IOMAP_DIO_WRITE_THROUGH; } /* @@ -605,14 +689,13 @@ __iomap_dio_rw(struct kiocb *iocb, struct iov_iter *iter, iomap_dio_set_error(dio, ret); /* - * If all the writes we issued were FUA, we don't need to flush the - * cache on IO completion. Clear the sync flag for this case. + * If all the writes we issued were already written through to the + * media, we don't need to flush the cache on IO completion. Clear the + * sync flag for this case. */ - if (dio->flags & IOMAP_DIO_WRITE_FUA) + if (dio->flags & IOMAP_DIO_WRITE_THROUGH) dio->flags &= ~IOMAP_DIO_NEED_SYNC; - WRITE_ONCE(iocb->private, dio->submit.poll_bio); - /* * We are about to drop our additional submission reference, which * might be the last reference to the dio. There are three different diff --git a/fs/isofs/Kconfig b/fs/isofs/Kconfig index 08ffd37b9bb8..51434f2a471b 100644 --- a/fs/isofs/Kconfig +++ b/fs/isofs/Kconfig @@ -1,6 +1,7 @@ # SPDX-License-Identifier: GPL-2.0-only config ISO9660_FS tristate "ISO 9660 CDROM file system support" + select BUFFER_HEAD help This is the standard file system used on CD-ROMs. It was previously known as "High Sierra File System" and is called "hsfs" on other diff --git a/fs/isofs/inode.c b/fs/isofs/inode.c index df9d70588b60..2ee21286ac8f 100644 --- a/fs/isofs/inode.c +++ b/fs/isofs/inode.c @@ -1422,13 +1422,8 @@ static int isofs_read_inode(struct inode *inode, int relocated) inode->i_ino, de->flags[-high_sierra]); } #endif - - inode->i_mtime.tv_sec = - inode->i_atime.tv_sec = - inode->i_ctime.tv_sec = iso_date(de->date, high_sierra); - inode->i_mtime.tv_nsec = - inode->i_atime.tv_nsec = - inode->i_ctime.tv_nsec = 0; + inode->i_mtime = inode->i_atime = + inode_set_ctime(inode, iso_date(de->date, high_sierra), 0); ei->i_first_extent = (isonum_733(de->extent) + isonum_711(de->ext_attr_length)); diff --git a/fs/isofs/rock.c b/fs/isofs/rock.c index 48f58c6c9e69..348783a70f57 100644 --- a/fs/isofs/rock.c +++ b/fs/isofs/rock.c @@ -421,10 +421,9 @@ repeat: /* Rock ridge never appears on a High Sierra disk */ cnt = 0; if (rr->u.TF.flags & TF_CREATE) { - inode->i_ctime.tv_sec = - iso_date(rr->u.TF.times[cnt++].time, - 0); - inode->i_ctime.tv_nsec = 0; + inode_set_ctime(inode, + iso_date(rr->u.TF.times[cnt++].time, 0), + 0); } if (rr->u.TF.flags & TF_MODIFY) { inode->i_mtime.tv_sec = @@ -439,10 +438,9 @@ repeat: inode->i_atime.tv_nsec = 0; } if (rr->u.TF.flags & TF_ATTRIBUTES) { - inode->i_ctime.tv_sec = - iso_date(rr->u.TF.times[cnt++].time, - 0); - inode->i_ctime.tv_nsec = 0; + inode_set_ctime(inode, + iso_date(rr->u.TF.times[cnt++].time, 0), + 0); } break; case SIG('S', 'L'): @@ -534,7 +532,7 @@ repeat: inode->i_size = reloc->i_size; inode->i_blocks = reloc->i_blocks; inode->i_atime = reloc->i_atime; - inode->i_ctime = reloc->i_ctime; + inode_set_ctime_to_ts(inode, inode_get_ctime(reloc)); inode->i_mtime = reloc->i_mtime; iput(reloc); break; diff --git a/fs/jbd2/checkpoint.c b/fs/jbd2/checkpoint.c index 9ec91017a7f3..118699fff2f9 100644 --- a/fs/jbd2/checkpoint.c +++ b/fs/jbd2/checkpoint.c @@ -41,18 +41,6 @@ static inline void __buffer_unlink(struct journal_head *jh) } /* - * Check a checkpoint buffer could be release or not. - * - * Requires j_list_lock - */ -static inline bool __cp_buffer_busy(struct journal_head *jh) -{ - struct buffer_head *bh = jh2bh(jh); - - return (jh->b_transaction || buffer_locked(bh) || buffer_dirty(bh)); -} - -/* * __jbd2_log_wait_for_space: wait until there is space in the journal. * * Called under j-state_lock *only*. It will be unlocked if we have to wait @@ -349,6 +337,8 @@ int jbd2_cleanup_journal_tail(journal_t *journal) /* Checkpoint list management */ +enum shrink_type {SHRINK_DESTROY, SHRINK_BUSY_STOP, SHRINK_BUSY_SKIP}; + /* * journal_shrink_one_cp_list * @@ -360,7 +350,8 @@ int jbd2_cleanup_journal_tail(journal_t *journal) * Called with j_list_lock held. */ static unsigned long journal_shrink_one_cp_list(struct journal_head *jh, - bool destroy, bool *released) + enum shrink_type type, + bool *released) { struct journal_head *last_jh; struct journal_head *next_jh = jh; @@ -376,12 +367,15 @@ static unsigned long journal_shrink_one_cp_list(struct journal_head *jh, jh = next_jh; next_jh = jh->b_cpnext; - if (destroy) { + if (type == SHRINK_DESTROY) { ret = __jbd2_journal_remove_checkpoint(jh); } else { ret = jbd2_journal_try_remove_checkpoint(jh); - if (ret < 0) - continue; + if (ret < 0) { + if (type == SHRINK_BUSY_SKIP) + continue; + break; + } } nr_freed++; @@ -445,7 +439,7 @@ again: tid = transaction->t_tid; freed = journal_shrink_one_cp_list(transaction->t_checkpoint_list, - false, &released); + SHRINK_BUSY_SKIP, &released); nr_freed += freed; (*nr_to_scan) -= min(*nr_to_scan, freed); if (*nr_to_scan == 0) @@ -485,19 +479,21 @@ out: void __jbd2_journal_clean_checkpoint_list(journal_t *journal, bool destroy) { transaction_t *transaction, *last_transaction, *next_transaction; + enum shrink_type type; bool released; transaction = journal->j_checkpoint_transactions; if (!transaction) return; + type = destroy ? SHRINK_DESTROY : SHRINK_BUSY_STOP; last_transaction = transaction->t_cpprev; next_transaction = transaction; do { transaction = next_transaction; next_transaction = transaction->t_cpnext; journal_shrink_one_cp_list(transaction->t_checkpoint_list, - destroy, &released); + type, &released); /* * This function only frees up some memory if possible so we * dont have an obligation to finish processing. Bail out if @@ -631,6 +627,8 @@ int jbd2_journal_try_remove_checkpoint(struct journal_head *jh) { struct buffer_head *bh = jh2bh(jh); + if (jh->b_transaction) + return -EBUSY; if (!trylock_buffer(bh)) return -EBUSY; if (buffer_dirty(bh)) { diff --git a/fs/jbd2/journal.c b/fs/jbd2/journal.c index 1b5a45ab62b0..768fa05bcbed 100644 --- a/fs/jbd2/journal.c +++ b/fs/jbd2/journal.c @@ -115,14 +115,6 @@ void __jbd2_debug(int level, const char *file, const char *func, #endif /* Checksumming functions */ -static int jbd2_verify_csum_type(journal_t *j, journal_superblock_t *sb) -{ - if (!jbd2_journal_has_csum_v2or3_feature(j)) - return 1; - - return sb->s_checksum_type == JBD2_CRC32C_CHKSUM; -} - static __be32 jbd2_superblock_csum(journal_t *j, journal_superblock_t *sb) { __u32 csum; @@ -1334,6 +1326,189 @@ static unsigned long jbd2_journal_shrink_count(struct shrinker *shrink, } /* + * If the journal init or create aborts, we need to mark the journal + * superblock as being NULL to prevent the journal destroy from writing + * back a bogus superblock. + */ +static void journal_fail_superblock(journal_t *journal) +{ + struct buffer_head *bh = journal->j_sb_buffer; + brelse(bh); + journal->j_sb_buffer = NULL; +} + +/* + * Check the superblock for a given journal, performing initial + * validation of the format. + */ +static int journal_check_superblock(journal_t *journal) +{ + journal_superblock_t *sb = journal->j_superblock; + int num_fc_blks; + int err = -EINVAL; + + if (sb->s_header.h_magic != cpu_to_be32(JBD2_MAGIC_NUMBER) || + sb->s_blocksize != cpu_to_be32(journal->j_blocksize)) { + printk(KERN_WARNING "JBD2: no valid journal superblock found\n"); + return err; + } + + if (be32_to_cpu(sb->s_header.h_blocktype) != JBD2_SUPERBLOCK_V1 && + be32_to_cpu(sb->s_header.h_blocktype) != JBD2_SUPERBLOCK_V2) { + printk(KERN_WARNING "JBD2: unrecognised superblock format ID\n"); + return err; + } + + if (be32_to_cpu(sb->s_maxlen) > journal->j_total_len) { + printk(KERN_WARNING "JBD2: journal file too short\n"); + return err; + } + + if (be32_to_cpu(sb->s_first) == 0 || + be32_to_cpu(sb->s_first) >= journal->j_total_len) { + printk(KERN_WARNING + "JBD2: Invalid start block of journal: %u\n", + be32_to_cpu(sb->s_first)); + return err; + } + + /* + * If this is a V2 superblock, then we have to check the + * features flags on it. + */ + if (!jbd2_format_support_feature(journal)) + return 0; + + if ((sb->s_feature_ro_compat & + ~cpu_to_be32(JBD2_KNOWN_ROCOMPAT_FEATURES)) || + (sb->s_feature_incompat & + ~cpu_to_be32(JBD2_KNOWN_INCOMPAT_FEATURES))) { + printk(KERN_WARNING "JBD2: Unrecognised features on journal\n"); + return err; + } + + num_fc_blks = jbd2_has_feature_fast_commit(journal) ? + jbd2_journal_get_num_fc_blks(sb) : 0; + if (be32_to_cpu(sb->s_maxlen) < JBD2_MIN_JOURNAL_BLOCKS || + be32_to_cpu(sb->s_maxlen) - JBD2_MIN_JOURNAL_BLOCKS < num_fc_blks) { + printk(KERN_ERR "JBD2: journal file too short %u,%d\n", + be32_to_cpu(sb->s_maxlen), num_fc_blks); + return err; + } + + if (jbd2_has_feature_csum2(journal) && + jbd2_has_feature_csum3(journal)) { + /* Can't have checksum v2 and v3 at the same time! */ + printk(KERN_ERR "JBD2: Can't enable checksumming v2 and v3 " + "at the same time!\n"); + return err; + } + + if (jbd2_journal_has_csum_v2or3_feature(journal) && + jbd2_has_feature_checksum(journal)) { + /* Can't have checksum v1 and v2 on at the same time! */ + printk(KERN_ERR "JBD2: Can't enable checksumming v1 and v2/3 " + "at the same time!\n"); + return err; + } + + /* Load the checksum driver */ + if (jbd2_journal_has_csum_v2or3_feature(journal)) { + if (sb->s_checksum_type != JBD2_CRC32C_CHKSUM) { + printk(KERN_ERR "JBD2: Unknown checksum type\n"); + return err; + } + + journal->j_chksum_driver = crypto_alloc_shash("crc32c", 0, 0); + if (IS_ERR(journal->j_chksum_driver)) { + printk(KERN_ERR "JBD2: Cannot load crc32c driver.\n"); + err = PTR_ERR(journal->j_chksum_driver); + journal->j_chksum_driver = NULL; + return err; + } + /* Check superblock checksum */ + if (sb->s_checksum != jbd2_superblock_csum(journal, sb)) { + printk(KERN_ERR "JBD2: journal checksum error\n"); + err = -EFSBADCRC; + return err; + } + } + + return 0; +} + +static int journal_revoke_records_per_block(journal_t *journal) +{ + int record_size; + int space = journal->j_blocksize - sizeof(jbd2_journal_revoke_header_t); + + if (jbd2_has_feature_64bit(journal)) + record_size = 8; + else + record_size = 4; + + if (jbd2_journal_has_csum_v2or3(journal)) + space -= sizeof(struct jbd2_journal_block_tail); + return space / record_size; +} + +/* + * Load the on-disk journal superblock and read the key fields into the + * journal_t. + */ +static int journal_load_superblock(journal_t *journal) +{ + int err; + struct buffer_head *bh; + journal_superblock_t *sb; + + bh = getblk_unmovable(journal->j_dev, journal->j_blk_offset, + journal->j_blocksize); + if (bh) + err = bh_read(bh, 0); + if (!bh || err < 0) { + pr_err("%s: Cannot read journal superblock\n", __func__); + brelse(bh); + return -EIO; + } + + journal->j_sb_buffer = bh; + sb = (journal_superblock_t *)bh->b_data; + journal->j_superblock = sb; + err = journal_check_superblock(journal); + if (err) { + journal_fail_superblock(journal); + return err; + } + + journal->j_tail_sequence = be32_to_cpu(sb->s_sequence); + journal->j_tail = be32_to_cpu(sb->s_start); + journal->j_first = be32_to_cpu(sb->s_first); + journal->j_errno = be32_to_cpu(sb->s_errno); + journal->j_last = be32_to_cpu(sb->s_maxlen); + + if (be32_to_cpu(sb->s_maxlen) < journal->j_total_len) + journal->j_total_len = be32_to_cpu(sb->s_maxlen); + /* Precompute checksum seed for all metadata */ + if (jbd2_journal_has_csum_v2or3(journal)) + journal->j_csum_seed = jbd2_chksum(journal, ~0, sb->s_uuid, + sizeof(sb->s_uuid)); + journal->j_revoke_records_per_block = + journal_revoke_records_per_block(journal); + + if (jbd2_has_feature_fast_commit(journal)) { + journal->j_fc_last = be32_to_cpu(sb->s_maxlen); + journal->j_last = journal->j_fc_last - + jbd2_journal_get_num_fc_blks(sb); + journal->j_fc_first = journal->j_last + 1; + journal->j_fc_off = 0; + } + + return 0; +} + + +/* * Management for journal control blocks: functions to create and * destroy journal_t structures, and to initialise and read existing * journal blocks from disk. */ @@ -1349,12 +1524,21 @@ static journal_t *journal_init_common(struct block_device *bdev, static struct lock_class_key jbd2_trans_commit_key; journal_t *journal; int err; - struct buffer_head *bh; int n; journal = kzalloc(sizeof(*journal), GFP_KERNEL); if (!journal) - return NULL; + return ERR_PTR(-ENOMEM); + + journal->j_blocksize = blocksize; + journal->j_dev = bdev; + journal->j_fs_dev = fs_dev; + journal->j_blk_offset = start; + journal->j_total_len = len; + + err = journal_load_superblock(journal); + if (err) + goto err_cleanup; init_waitqueue_head(&journal->j_wait_transaction_locked); init_waitqueue_head(&journal->j_wait_done_commit); @@ -1367,12 +1551,15 @@ static journal_t *journal_init_common(struct block_device *bdev, mutex_init(&journal->j_checkpoint_mutex); spin_lock_init(&journal->j_revoke_lock); spin_lock_init(&journal->j_list_lock); + spin_lock_init(&journal->j_history_lock); rwlock_init(&journal->j_state_lock); journal->j_commit_interval = (HZ * JBD2_DEFAULT_MAX_COMMIT_AGE); journal->j_min_batch_time = 0; journal->j_max_batch_time = 15000; /* 15ms */ atomic_set(&journal->j_reserved_credits, 0); + lockdep_init_map(&journal->j_trans_commit_map, "jbd2_handle", + &jbd2_trans_commit_key, 0); /* The journal is marked for error until we succeed with recovery! */ journal->j_flags = JBD2_ABORT; @@ -1382,18 +1569,11 @@ static journal_t *journal_init_common(struct block_device *bdev, if (err) goto err_cleanup; - spin_lock_init(&journal->j_history_lock); - - lockdep_init_map(&journal->j_trans_commit_map, "jbd2_handle", - &jbd2_trans_commit_key, 0); - - /* journal descriptor can store up to n blocks -bzzz */ - journal->j_blocksize = blocksize; - journal->j_dev = bdev; - journal->j_fs_dev = fs_dev; - journal->j_blk_offset = start; - journal->j_total_len = len; - /* We need enough buffers to write out full descriptor block. */ + /* + * journal descriptor can store up to n blocks, we need enough + * buffers to write out full descriptor block. + */ + err = -ENOMEM; n = journal->j_blocksize / jbd2_min_tag_size(); journal->j_wbufsize = n; journal->j_fc_wbuf = NULL; @@ -1402,37 +1582,30 @@ static journal_t *journal_init_common(struct block_device *bdev, if (!journal->j_wbuf) goto err_cleanup; - bh = getblk_unmovable(journal->j_dev, start, journal->j_blocksize); - if (!bh) { - pr_err("%s: Cannot get buffer for journal superblock\n", - __func__); + err = percpu_counter_init(&journal->j_checkpoint_jh_count, 0, + GFP_KERNEL); + if (err) goto err_cleanup; - } - journal->j_sb_buffer = bh; - journal->j_superblock = (journal_superblock_t *)bh->b_data; journal->j_shrink_transaction = NULL; journal->j_shrinker.scan_objects = jbd2_journal_shrink_scan; journal->j_shrinker.count_objects = jbd2_journal_shrink_count; journal->j_shrinker.seeks = DEFAULT_SEEKS; journal->j_shrinker.batch = journal->j_max_transaction_buffers; - - if (percpu_counter_init(&journal->j_checkpoint_jh_count, 0, GFP_KERNEL)) + err = register_shrinker(&journal->j_shrinker, "jbd2-journal:(%u:%u)", + MAJOR(bdev->bd_dev), MINOR(bdev->bd_dev)); + if (err) goto err_cleanup; - if (register_shrinker(&journal->j_shrinker, "jbd2-journal:(%u:%u)", - MAJOR(bdev->bd_dev), MINOR(bdev->bd_dev))) { - percpu_counter_destroy(&journal->j_checkpoint_jh_count); - goto err_cleanup; - } return journal; err_cleanup: - brelse(journal->j_sb_buffer); + percpu_counter_destroy(&journal->j_checkpoint_jh_count); kfree(journal->j_wbuf); jbd2_journal_destroy_revoke(journal); + journal_fail_superblock(journal); kfree(journal); - return NULL; + return ERR_PTR(err); } /* jbd2_journal_init_dev and jbd2_journal_init_inode: @@ -1465,8 +1638,8 @@ journal_t *jbd2_journal_init_dev(struct block_device *bdev, journal_t *journal; journal = journal_init_common(bdev, fs_dev, start, len, blocksize); - if (!journal) - return NULL; + if (IS_ERR(journal)) + return ERR_CAST(journal); snprintf(journal->j_devname, sizeof(journal->j_devname), "%pg", journal->j_dev); @@ -1492,11 +1665,9 @@ journal_t *jbd2_journal_init_inode(struct inode *inode) blocknr = 0; err = bmap(inode, &blocknr); - if (err || !blocknr) { - pr_err("%s: Cannot locate journal superblock\n", - __func__); - return NULL; + pr_err("%s: Cannot locate journal superblock\n", __func__); + return err ? ERR_PTR(err) : ERR_PTR(-EINVAL); } jbd2_debug(1, "JBD2: inode %s/%ld, size %lld, bits %d, blksize %ld\n", @@ -1506,8 +1677,8 @@ journal_t *jbd2_journal_init_inode(struct inode *inode) journal = journal_init_common(inode->i_sb->s_bdev, inode->i_sb->s_bdev, blocknr, inode->i_size >> inode->i_sb->s_blocksize_bits, inode->i_sb->s_blocksize); - if (!journal) - return NULL; + if (IS_ERR(journal)) + return ERR_CAST(journal); journal->j_inode = inode; snprintf(journal->j_devname, sizeof(journal->j_devname), @@ -1519,18 +1690,6 @@ journal_t *jbd2_journal_init_inode(struct inode *inode) } /* - * If the journal init or create aborts, we need to mark the journal - * superblock as being NULL to prevent the journal destroy from writing - * back a bogus superblock. - */ -static void journal_fail_superblock(journal_t *journal) -{ - struct buffer_head *bh = journal->j_sb_buffer; - brelse(bh); - journal->j_sb_buffer = NULL; -} - -/* * Given a journal_t structure, initialise the various fields for * startup of a new journaling session. We use this both when creating * a journal, and after recovering an old journal to reset it for @@ -1886,163 +2045,6 @@ void jbd2_journal_update_sb_errno(journal_t *journal) } EXPORT_SYMBOL(jbd2_journal_update_sb_errno); -static int journal_revoke_records_per_block(journal_t *journal) -{ - int record_size; - int space = journal->j_blocksize - sizeof(jbd2_journal_revoke_header_t); - - if (jbd2_has_feature_64bit(journal)) - record_size = 8; - else - record_size = 4; - - if (jbd2_journal_has_csum_v2or3(journal)) - space -= sizeof(struct jbd2_journal_block_tail); - return space / record_size; -} - -/* - * Read the superblock for a given journal, performing initial - * validation of the format. - */ -static int journal_get_superblock(journal_t *journal) -{ - struct buffer_head *bh; - journal_superblock_t *sb; - int err; - - bh = journal->j_sb_buffer; - - J_ASSERT(bh != NULL); - if (buffer_verified(bh)) - return 0; - - err = bh_read(bh, 0); - if (err < 0) { - printk(KERN_ERR - "JBD2: IO error reading journal superblock\n"); - goto out; - } - - sb = journal->j_superblock; - - err = -EINVAL; - - if (sb->s_header.h_magic != cpu_to_be32(JBD2_MAGIC_NUMBER) || - sb->s_blocksize != cpu_to_be32(journal->j_blocksize)) { - printk(KERN_WARNING "JBD2: no valid journal superblock found\n"); - goto out; - } - - if (be32_to_cpu(sb->s_header.h_blocktype) != JBD2_SUPERBLOCK_V1 && - be32_to_cpu(sb->s_header.h_blocktype) != JBD2_SUPERBLOCK_V2) { - printk(KERN_WARNING "JBD2: unrecognised superblock format ID\n"); - goto out; - } - - if (be32_to_cpu(sb->s_maxlen) > journal->j_total_len) { - printk(KERN_WARNING "JBD2: journal file too short\n"); - goto out; - } - - if (be32_to_cpu(sb->s_first) == 0 || - be32_to_cpu(sb->s_first) >= journal->j_total_len) { - printk(KERN_WARNING - "JBD2: Invalid start block of journal: %u\n", - be32_to_cpu(sb->s_first)); - goto out; - } - - if (jbd2_has_feature_csum2(journal) && - jbd2_has_feature_csum3(journal)) { - /* Can't have checksum v2 and v3 at the same time! */ - printk(KERN_ERR "JBD2: Can't enable checksumming v2 and v3 " - "at the same time!\n"); - goto out; - } - - if (jbd2_journal_has_csum_v2or3_feature(journal) && - jbd2_has_feature_checksum(journal)) { - /* Can't have checksum v1 and v2 on at the same time! */ - printk(KERN_ERR "JBD2: Can't enable checksumming v1 and v2/3 " - "at the same time!\n"); - goto out; - } - - if (!jbd2_verify_csum_type(journal, sb)) { - printk(KERN_ERR "JBD2: Unknown checksum type\n"); - goto out; - } - - /* Load the checksum driver */ - if (jbd2_journal_has_csum_v2or3_feature(journal)) { - journal->j_chksum_driver = crypto_alloc_shash("crc32c", 0, 0); - if (IS_ERR(journal->j_chksum_driver)) { - printk(KERN_ERR "JBD2: Cannot load crc32c driver.\n"); - err = PTR_ERR(journal->j_chksum_driver); - journal->j_chksum_driver = NULL; - goto out; - } - /* Check superblock checksum */ - if (sb->s_checksum != jbd2_superblock_csum(journal, sb)) { - printk(KERN_ERR "JBD2: journal checksum error\n"); - err = -EFSBADCRC; - goto out; - } - } - set_buffer_verified(bh); - return 0; - -out: - journal_fail_superblock(journal); - return err; -} - -/* - * Load the on-disk journal superblock and read the key fields into the - * journal_t. - */ - -static int load_superblock(journal_t *journal) -{ - int err; - journal_superblock_t *sb; - int num_fc_blocks; - - err = journal_get_superblock(journal); - if (err) - return err; - - sb = journal->j_superblock; - - journal->j_tail_sequence = be32_to_cpu(sb->s_sequence); - journal->j_tail = be32_to_cpu(sb->s_start); - journal->j_first = be32_to_cpu(sb->s_first); - journal->j_errno = be32_to_cpu(sb->s_errno); - journal->j_last = be32_to_cpu(sb->s_maxlen); - - if (be32_to_cpu(sb->s_maxlen) < journal->j_total_len) - journal->j_total_len = be32_to_cpu(sb->s_maxlen); - /* Precompute checksum seed for all metadata */ - if (jbd2_journal_has_csum_v2or3(journal)) - journal->j_csum_seed = jbd2_chksum(journal, ~0, sb->s_uuid, - sizeof(sb->s_uuid)); - journal->j_revoke_records_per_block = - journal_revoke_records_per_block(journal); - - if (jbd2_has_feature_fast_commit(journal)) { - journal->j_fc_last = be32_to_cpu(sb->s_maxlen); - num_fc_blocks = jbd2_journal_get_num_fc_blks(sb); - if (journal->j_last - num_fc_blocks >= JBD2_MIN_JOURNAL_BLOCKS) - journal->j_last = journal->j_fc_last - num_fc_blocks; - journal->j_fc_first = journal->j_last + 1; - journal->j_fc_off = 0; - } - - return 0; -} - - /** * jbd2_journal_load() - Read journal from disk. * @journal: Journal to act on. @@ -2054,28 +2056,7 @@ static int load_superblock(journal_t *journal) int jbd2_journal_load(journal_t *journal) { int err; - journal_superblock_t *sb; - - err = load_superblock(journal); - if (err) - return err; - - sb = journal->j_superblock; - - /* - * If this is a V2 superblock, then we have to check the - * features flags on it. - */ - if (jbd2_format_support_feature(journal)) { - if ((sb->s_feature_ro_compat & - ~cpu_to_be32(JBD2_KNOWN_ROCOMPAT_FEATURES)) || - (sb->s_feature_incompat & - ~cpu_to_be32(JBD2_KNOWN_INCOMPAT_FEATURES))) { - printk(KERN_WARNING - "JBD2: Unrecognised features on journal\n"); - return -EINVAL; - } - } + journal_superblock_t *sb = journal->j_superblock; /* * Create a slab for this blocksize @@ -2086,8 +2067,11 @@ int jbd2_journal_load(journal_t *journal) /* Let the recovery code check whether it needs to recover any * data from the journal. */ - if (jbd2_journal_recover(journal)) - goto recovery_error; + err = jbd2_journal_recover(journal); + if (err) { + pr_warn("JBD2: journal recovery failed\n"); + return err; + } if (journal->j_failed_commit) { printk(KERN_ERR "JBD2: journal transaction %u on %s " @@ -2104,15 +2088,14 @@ int jbd2_journal_load(journal_t *journal) /* OK, we've finished with the dynamic journal bits: * reinitialise the dynamic contents of the superblock in memory * and reset them on disk. */ - if (journal_reset(journal)) - goto recovery_error; + err = journal_reset(journal); + if (err) { + pr_warn("JBD2: journal reset failed\n"); + return err; + } journal->j_flags |= JBD2_LOADED; return 0; - -recovery_error: - printk(KERN_WARNING "JBD2: recovery failed\n"); - return -EIO; } /** @@ -2224,8 +2207,6 @@ int jbd2_journal_check_used_features(journal_t *journal, unsigned long compat, if (!compat && !ro && !incompat) return 1; - if (journal_get_superblock(journal)) - return 0; if (!jbd2_format_support_feature(journal)) return 0; @@ -2515,16 +2496,12 @@ out: int jbd2_journal_wipe(journal_t *journal, int write) { - int err = 0; + int err; J_ASSERT (!(journal->j_flags & JBD2_LOADED)); - err = load_superblock(journal); - if (err) - return err; - if (!journal->j_tail) - goto no_recovery; + return 0; printk(KERN_WARNING "JBD2: %s recovery information on journal\n", write ? "Clearing" : "Ignoring"); @@ -2537,7 +2514,6 @@ int jbd2_journal_wipe(journal_t *journal, int write) mutex_unlock(&journal->j_checkpoint_mutex); } - no_recovery: return err; } diff --git a/fs/jbd2/recovery.c b/fs/jbd2/recovery.c index 0184931d47f7..c269a7d29a46 100644 --- a/fs/jbd2/recovery.c +++ b/fs/jbd2/recovery.c @@ -230,12 +230,8 @@ static int count_tags(journal_t *journal, struct buffer_head *bh) /* Make sure we wrap around the log correctly! */ #define wrap(journal, var) \ do { \ - unsigned long _wrap_last = \ - jbd2_has_feature_fast_commit(journal) ? \ - (journal)->j_fc_last : (journal)->j_last; \ - \ - if (var >= _wrap_last) \ - var -= (_wrap_last - (journal)->j_first); \ + if (var >= (journal)->j_last) \ + var -= ((journal)->j_last - (journal)->j_first); \ } while (0) static int fc_do_one_pass(journal_t *journal, @@ -524,9 +520,7 @@ static int do_one_pass(journal_t *journal, break; jbd2_debug(2, "Scanning for sequence ID %u at %lu/%lu\n", - next_commit_ID, next_log_block, - jbd2_has_feature_fast_commit(journal) ? - journal->j_fc_last : journal->j_last); + next_commit_ID, next_log_block, journal->j_last); /* Skip over each chunk of the transaction looking * either the next descriptor block or the final commit diff --git a/fs/jffs2/dir.c b/fs/jffs2/dir.c index 5075a0a6d594..091ab0eaabbe 100644 --- a/fs/jffs2/dir.c +++ b/fs/jffs2/dir.c @@ -204,7 +204,8 @@ static int jffs2_create(struct mnt_idmap *idmap, struct inode *dir_i, if (ret) goto fail; - dir_i->i_mtime = dir_i->i_ctime = ITIME(je32_to_cpu(ri->ctime)); + dir_i->i_mtime = inode_set_ctime_to_ts(dir_i, + ITIME(je32_to_cpu(ri->ctime))); jffs2_free_raw_inode(ri); @@ -237,7 +238,7 @@ static int jffs2_unlink(struct inode *dir_i, struct dentry *dentry) if (dead_f->inocache) set_nlink(d_inode(dentry), dead_f->inocache->pino_nlink); if (!ret) - dir_i->i_mtime = dir_i->i_ctime = ITIME(now); + dir_i->i_mtime = inode_set_ctime_to_ts(dir_i, ITIME(now)); return ret; } /***********************************************************************/ @@ -271,7 +272,7 @@ static int jffs2_link (struct dentry *old_dentry, struct inode *dir_i, struct de set_nlink(d_inode(old_dentry), ++f->inocache->pino_nlink); mutex_unlock(&f->sem); d_instantiate(dentry, d_inode(old_dentry)); - dir_i->i_mtime = dir_i->i_ctime = ITIME(now); + dir_i->i_mtime = inode_set_ctime_to_ts(dir_i, ITIME(now)); ihold(d_inode(old_dentry)); } return ret; @@ -422,7 +423,8 @@ static int jffs2_symlink (struct mnt_idmap *idmap, struct inode *dir_i, goto fail; } - dir_i->i_mtime = dir_i->i_ctime = ITIME(je32_to_cpu(rd->mctime)); + dir_i->i_mtime = inode_set_ctime_to_ts(dir_i, + ITIME(je32_to_cpu(rd->mctime))); jffs2_free_raw_dirent(rd); @@ -566,7 +568,8 @@ static int jffs2_mkdir (struct mnt_idmap *idmap, struct inode *dir_i, goto fail; } - dir_i->i_mtime = dir_i->i_ctime = ITIME(je32_to_cpu(rd->mctime)); + dir_i->i_mtime = inode_set_ctime_to_ts(dir_i, + ITIME(je32_to_cpu(rd->mctime))); inc_nlink(dir_i); jffs2_free_raw_dirent(rd); @@ -607,7 +610,7 @@ static int jffs2_rmdir (struct inode *dir_i, struct dentry *dentry) ret = jffs2_do_unlink(c, dir_f, dentry->d_name.name, dentry->d_name.len, f, now); if (!ret) { - dir_i->i_mtime = dir_i->i_ctime = ITIME(now); + dir_i->i_mtime = inode_set_ctime_to_ts(dir_i, ITIME(now)); clear_nlink(d_inode(dentry)); drop_nlink(dir_i); } @@ -743,7 +746,8 @@ static int jffs2_mknod (struct mnt_idmap *idmap, struct inode *dir_i, goto fail; } - dir_i->i_mtime = dir_i->i_ctime = ITIME(je32_to_cpu(rd->mctime)); + dir_i->i_mtime = inode_set_ctime_to_ts(dir_i, + ITIME(je32_to_cpu(rd->mctime))); jffs2_free_raw_dirent(rd); @@ -864,14 +868,16 @@ static int jffs2_rename (struct mnt_idmap *idmap, * caller won't do it on its own since we are returning an error. */ d_invalidate(new_dentry); - new_dir_i->i_mtime = new_dir_i->i_ctime = ITIME(now); + new_dir_i->i_mtime = inode_set_ctime_to_ts(new_dir_i, + ITIME(now)); return ret; } if (d_is_dir(old_dentry)) drop_nlink(old_dir_i); - new_dir_i->i_mtime = new_dir_i->i_ctime = old_dir_i->i_mtime = old_dir_i->i_ctime = ITIME(now); + old_dir_i->i_mtime = inode_set_ctime_to_ts(old_dir_i, ITIME(now)); + new_dir_i->i_mtime = inode_set_ctime_to_ts(new_dir_i, ITIME(now)); return 0; } diff --git a/fs/jffs2/file.c b/fs/jffs2/file.c index 2345ca3f09ee..11c66793960e 100644 --- a/fs/jffs2/file.c +++ b/fs/jffs2/file.c @@ -317,7 +317,8 @@ static int jffs2_write_end(struct file *filp, struct address_space *mapping, inode->i_size = pos + writtenlen; inode->i_blocks = (inode->i_size + 511) >> 9; - inode->i_ctime = inode->i_mtime = ITIME(je32_to_cpu(ri->ctime)); + inode->i_mtime = inode_set_ctime_to_ts(inode, + ITIME(je32_to_cpu(ri->ctime))); } } diff --git a/fs/jffs2/fs.c b/fs/jffs2/fs.c index 038516bee1ab..0403efab4089 100644 --- a/fs/jffs2/fs.c +++ b/fs/jffs2/fs.c @@ -115,7 +115,7 @@ int jffs2_do_setattr (struct inode *inode, struct iattr *iattr) ri->isize = cpu_to_je32((ivalid & ATTR_SIZE)?iattr->ia_size:inode->i_size); ri->atime = cpu_to_je32(I_SEC((ivalid & ATTR_ATIME)?iattr->ia_atime:inode->i_atime)); ri->mtime = cpu_to_je32(I_SEC((ivalid & ATTR_MTIME)?iattr->ia_mtime:inode->i_mtime)); - ri->ctime = cpu_to_je32(I_SEC((ivalid & ATTR_CTIME)?iattr->ia_ctime:inode->i_ctime)); + ri->ctime = cpu_to_je32(I_SEC((ivalid & ATTR_CTIME)?iattr->ia_ctime:inode_get_ctime(inode))); ri->offset = cpu_to_je32(0); ri->csize = ri->dsize = cpu_to_je32(mdatalen); @@ -148,7 +148,7 @@ int jffs2_do_setattr (struct inode *inode, struct iattr *iattr) } /* It worked. Update the inode */ inode->i_atime = ITIME(je32_to_cpu(ri->atime)); - inode->i_ctime = ITIME(je32_to_cpu(ri->ctime)); + inode_set_ctime_to_ts(inode, ITIME(je32_to_cpu(ri->ctime))); inode->i_mtime = ITIME(je32_to_cpu(ri->mtime)); inode->i_mode = jemode_to_cpu(ri->mode); i_uid_write(inode, je16_to_cpu(ri->uid)); @@ -284,7 +284,7 @@ struct inode *jffs2_iget(struct super_block *sb, unsigned long ino) inode->i_size = je32_to_cpu(latest_node.isize); inode->i_atime = ITIME(je32_to_cpu(latest_node.atime)); inode->i_mtime = ITIME(je32_to_cpu(latest_node.mtime)); - inode->i_ctime = ITIME(je32_to_cpu(latest_node.ctime)); + inode_set_ctime_to_ts(inode, ITIME(je32_to_cpu(latest_node.ctime))); set_nlink(inode, f->inocache->pino_nlink); @@ -388,7 +388,7 @@ void jffs2_dirty_inode(struct inode *inode, int flags) iattr.ia_gid = inode->i_gid; iattr.ia_atime = inode->i_atime; iattr.ia_mtime = inode->i_mtime; - iattr.ia_ctime = inode->i_ctime; + iattr.ia_ctime = inode_get_ctime(inode); jffs2_do_setattr(inode, &iattr); } @@ -475,7 +475,7 @@ struct inode *jffs2_new_inode (struct inode *dir_i, umode_t mode, struct jffs2_r inode->i_mode = jemode_to_cpu(ri->mode); i_gid_write(inode, je16_to_cpu(ri->gid)); i_uid_write(inode, je16_to_cpu(ri->uid)); - inode->i_atime = inode->i_ctime = inode->i_mtime = current_time(inode); + inode->i_atime = inode->i_mtime = inode_set_ctime_current(inode); ri->atime = ri->mtime = ri->ctime = cpu_to_je32(I_SEC(inode->i_mtime)); inode->i_blocks = 0; diff --git a/fs/jffs2/os-linux.h b/fs/jffs2/os-linux.h index 8da19766c101..50727a1ff931 100644 --- a/fs/jffs2/os-linux.h +++ b/fs/jffs2/os-linux.h @@ -35,7 +35,7 @@ struct kvec; #define ITIME(sec) ((struct timespec64){sec, 0}) #define JFFS2_NOW() JFFS2_CLAMP_TIME(ktime_get_real_seconds()) #define I_SEC(tv) JFFS2_CLAMP_TIME((tv).tv_sec) -#define JFFS2_F_I_CTIME(f) I_SEC(OFNI_EDONI_2SFFJ(f)->i_ctime) +#define JFFS2_F_I_CTIME(f) I_SEC(inode_get_ctime(OFNI_EDONI_2SFFJ(f))) #define JFFS2_F_I_MTIME(f) I_SEC(OFNI_EDONI_2SFFJ(f)->i_mtime) #define JFFS2_F_I_ATIME(f) I_SEC(OFNI_EDONI_2SFFJ(f)->i_atime) #define sleep_on_spinunlock(wq, s) \ diff --git a/fs/jfs/Kconfig b/fs/jfs/Kconfig index 51e856f0e4b8..3728cf4d944d 100644 --- a/fs/jfs/Kconfig +++ b/fs/jfs/Kconfig @@ -1,7 +1,9 @@ # SPDX-License-Identifier: GPL-2.0-only config JFS_FS tristate "JFS filesystem support" + select BUFFER_HEAD select NLS + select NLS_UCS2_UTILS select CRC32 select LEGACY_DIRECT_IO help diff --git a/fs/jfs/Makefile b/fs/jfs/Makefile index 7156d2c218c7..b769bbf8bdc2 100644 --- a/fs/jfs/Makefile +++ b/fs/jfs/Makefile @@ -9,7 +9,7 @@ jfs-y := super.o file.o inode.o namei.o jfs_mount.o jfs_umount.o \ jfs_xtree.o jfs_imap.o jfs_debug.o jfs_dmap.o \ jfs_unicode.o jfs_dtree.o jfs_inode.o jfs_discard.o \ jfs_extent.o symlink.o jfs_metapage.o \ - jfs_logmgr.o jfs_txnmgr.o jfs_uniupr.o \ + jfs_logmgr.o jfs_txnmgr.o \ resize.o xattr.o ioctl.o jfs-$(CONFIG_JFS_POSIX_ACL) += acl.o diff --git a/fs/jfs/acl.c b/fs/jfs/acl.c index fb96f872d207..1de3602c98de 100644 --- a/fs/jfs/acl.c +++ b/fs/jfs/acl.c @@ -116,7 +116,7 @@ int jfs_set_acl(struct mnt_idmap *idmap, struct dentry *dentry, if (!rc) { if (update_mode) { inode->i_mode = mode; - inode->i_ctime = current_time(inode); + inode_set_ctime_current(inode); mark_inode_dirty(inode); } rc = txCommit(tid, 1, &inode, 0); diff --git a/fs/jfs/inode.c b/fs/jfs/inode.c index 8ac10e396050..920d58a1566b 100644 --- a/fs/jfs/inode.c +++ b/fs/jfs/inode.c @@ -393,7 +393,7 @@ void jfs_truncate_nolock(struct inode *ip, loff_t length) break; } - ip->i_mtime = ip->i_ctime = current_time(ip); + ip->i_mtime = inode_set_ctime_current(ip); mark_inode_dirty(ip); txCommit(tid, 1, &ip, 0); diff --git a/fs/jfs/ioctl.c b/fs/jfs/ioctl.c index ed7989bc2db1..f7bd7e8f5be4 100644 --- a/fs/jfs/ioctl.c +++ b/fs/jfs/ioctl.c @@ -96,7 +96,7 @@ int jfs_fileattr_set(struct mnt_idmap *idmap, jfs_inode->mode2 = flags; jfs_set_inode_flags(inode); - inode->i_ctime = current_time(inode); + inode_set_ctime_current(inode); mark_inode_dirty(inode); return 0; diff --git a/fs/jfs/jfs_dmap.c b/fs/jfs/jfs_dmap.c index a14a0f18a4c4..88afd108c2dd 100644 --- a/fs/jfs/jfs_dmap.c +++ b/fs/jfs/jfs_dmap.c @@ -269,6 +269,7 @@ int dbUnmount(struct inode *ipbmap, int mounterror) /* free the memory for the in-memory bmap. */ kfree(bmp); + JFS_SBI(ipbmap->i_sb)->bmap = NULL; return (0); } diff --git a/fs/jfs/jfs_extent.c b/fs/jfs/jfs_extent.c index ae99a7e232ee..63d21822d309 100644 --- a/fs/jfs/jfs_extent.c +++ b/fs/jfs/jfs_extent.c @@ -166,7 +166,7 @@ extAlloc(struct inode *ip, s64 xlen, s64 pno, xad_t * xp, bool abnr) /* * COMMIT_SyncList flags an anonymous tlock on page that is on * sync list. - * We need to commit the inode to get the page written disk. + * We need to commit the inode to get the page written to the disk. */ if (test_and_clear_cflag(COMMIT_Synclist,ip)) jfs_commit_inode(ip, 0); @@ -311,6 +311,11 @@ extBalloc(struct inode *ip, s64 hint, s64 * nblocks, s64 * blkno) * blocks in the map. in that case, we'll start off with the * maximum free. */ + + /* give up if no space left */ + if (bmp->db_maxfreebud == -1) + return -ENOSPC; + max = (s64) 1 << bmp->db_maxfreebud; if (*nblocks >= max && *nblocks > nbperpage) nb = nblks = (max > nbperpage) ? max : nbperpage; diff --git a/fs/jfs/jfs_imap.c b/fs/jfs/jfs_imap.c index 390cbfce391f..923a58422c46 100644 --- a/fs/jfs/jfs_imap.c +++ b/fs/jfs/jfs_imap.c @@ -193,6 +193,7 @@ int diUnmount(struct inode *ipimap, int mounterror) * free in-memory control structure */ kfree(imap); + JFS_IP(ipimap)->i_imap = NULL; return (0); } @@ -3064,8 +3065,8 @@ static int copy_from_dinode(struct dinode * dip, struct inode *ip) ip->i_atime.tv_nsec = le32_to_cpu(dip->di_atime.tv_nsec); ip->i_mtime.tv_sec = le32_to_cpu(dip->di_mtime.tv_sec); ip->i_mtime.tv_nsec = le32_to_cpu(dip->di_mtime.tv_nsec); - ip->i_ctime.tv_sec = le32_to_cpu(dip->di_ctime.tv_sec); - ip->i_ctime.tv_nsec = le32_to_cpu(dip->di_ctime.tv_nsec); + inode_set_ctime(ip, le32_to_cpu(dip->di_ctime.tv_sec), + le32_to_cpu(dip->di_ctime.tv_nsec)); ip->i_blocks = LBLK2PBLK(ip->i_sb, le64_to_cpu(dip->di_nblocks)); ip->i_generation = le32_to_cpu(dip->di_gen); @@ -3139,8 +3140,8 @@ static void copy_to_dinode(struct dinode * dip, struct inode *ip) dip->di_atime.tv_sec = cpu_to_le32(ip->i_atime.tv_sec); dip->di_atime.tv_nsec = cpu_to_le32(ip->i_atime.tv_nsec); - dip->di_ctime.tv_sec = cpu_to_le32(ip->i_ctime.tv_sec); - dip->di_ctime.tv_nsec = cpu_to_le32(ip->i_ctime.tv_nsec); + dip->di_ctime.tv_sec = cpu_to_le32(inode_get_ctime(ip).tv_sec); + dip->di_ctime.tv_nsec = cpu_to_le32(inode_get_ctime(ip).tv_nsec); dip->di_mtime.tv_sec = cpu_to_le32(ip->i_mtime.tv_sec); dip->di_mtime.tv_nsec = cpu_to_le32(ip->i_mtime.tv_nsec); dip->di_ixpxd = jfs_ip->ixpxd; /* in-memory pxd's are little-endian */ diff --git a/fs/jfs/jfs_inode.c b/fs/jfs/jfs_inode.c index 9e1f02767201..87594efa7f7c 100644 --- a/fs/jfs/jfs_inode.c +++ b/fs/jfs/jfs_inode.c @@ -97,8 +97,8 @@ struct inode *ialloc(struct inode *parent, umode_t mode) jfs_inode->mode2 |= inode->i_mode; inode->i_blocks = 0; - inode->i_mtime = inode->i_atime = inode->i_ctime = current_time(inode); - jfs_inode->otime = inode->i_ctime.tv_sec; + inode->i_mtime = inode->i_atime = inode_set_ctime_current(inode); + jfs_inode->otime = inode_get_ctime(inode).tv_sec; inode->i_generation = JFS_SBI(sb)->gengen++; jfs_inode->cflag = 0; diff --git a/fs/jfs/jfs_unicode.h b/fs/jfs/jfs_unicode.h index 9db62d047daa..b6a78d4aef1b 100644 --- a/fs/jfs/jfs_unicode.h +++ b/fs/jfs/jfs_unicode.h @@ -8,16 +8,9 @@ #include <linux/slab.h> #include <asm/byteorder.h> +#include "../nls/nls_ucs2_data.h" #include "jfs_types.h" -typedef struct { - wchar_t start; - wchar_t end; - signed char *table; -} UNICASERANGE; - -extern signed char UniUpperTable[512]; -extern UNICASERANGE UniUpperRange[]; extern int get_UCSname(struct component_name *, struct dentry *); extern int jfs_strfromUCS_le(char *, const __le16 *, int, struct nls_table *); @@ -107,12 +100,12 @@ static inline wchar_t *UniStrncpy_from_le(wchar_t * ucs1, const __le16 * ucs2, */ static inline wchar_t UniToupper(wchar_t uc) { - UNICASERANGE *rp; + const struct UniCaseRange *rp; - if (uc < sizeof(UniUpperTable)) { /* Latin characters */ - return uc + UniUpperTable[uc]; /* Use base tables */ + if (uc < sizeof(NlsUniUpperTable)) { /* Latin characters */ + return uc + NlsUniUpperTable[uc]; /* Use base tables */ } else { - rp = UniUpperRange; /* Use range tables */ + rp = NlsUniUpperRange; /* Use range tables */ while (rp->start) { if (uc < rp->start) /* Before start of range */ return uc; /* Uppercase = input */ diff --git a/fs/jfs/jfs_uniupr.c b/fs/jfs/jfs_uniupr.c deleted file mode 100644 index d0b18c7befb8..000000000000 --- a/fs/jfs/jfs_uniupr.c +++ /dev/null @@ -1,121 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-or-later -/* - * Copyright (C) International Business Machines Corp., 2000-2002 - */ - -#include <linux/fs.h> -#include "jfs_unicode.h" - -/* - * Latin upper case - */ -signed char UniUpperTable[512] = { - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 000-00f */ - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 010-01f */ - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 020-02f */ - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 030-03f */ - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 040-04f */ - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 050-05f */ - 0,-32,-32,-32,-32,-32,-32,-32,-32,-32,-32,-32,-32,-32,-32,-32, /* 060-06f */ - -32,-32,-32,-32,-32,-32,-32,-32,-32,-32,-32, 0, 0, 0, 0, 0, /* 070-07f */ - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 080-08f */ - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 090-09f */ - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0a0-0af */ - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0b0-0bf */ - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0c0-0cf */ - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0d0-0df */ - -32,-32,-32,-32,-32,-32,-32,-32,-32,-32,-32,-32,-32,-32,-32,-32, /* 0e0-0ef */ - -32,-32,-32,-32,-32,-32,-32, 0,-32,-32,-32,-32,-32,-32,-32,121, /* 0f0-0ff */ - 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, /* 100-10f */ - 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, /* 110-11f */ - 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, /* 120-12f */ - 0, 0, 0, -1, 0, -1, 0, -1, 0, 0, -1, 0, -1, 0, -1, 0, /* 130-13f */ - -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, 0, -1, 0, -1, 0, -1, /* 140-14f */ - 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, /* 150-15f */ - 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, /* 160-16f */ - 0, -1, 0, -1, 0, -1, 0, -1, 0, 0, -1, 0, -1, 0, -1, 0, /* 170-17f */ - 0, 0, 0, -1, 0, -1, 0, 0, -1, 0, 0, 0, -1, 0, 0, 0, /* 180-18f */ - 0, 0, -1, 0, 0, 0, 0, 0, 0, -1, 0, 0, 0, 0, 0, 0, /* 190-19f */ - 0, -1, 0, -1, 0, -1, 0, 0, -1, 0, 0, 0, 0, -1, 0, 0, /* 1a0-1af */ - -1, 0, 0, 0, -1, 0, -1, 0, 0, -1, 0, 0, 0, -1, 0, 0, /* 1b0-1bf */ - 0, 0, 0, 0, 0, -1, -2, 0, -1, -2, 0, -1, -2, 0, -1, 0, /* 1c0-1cf */ - -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1,-79, 0, -1, /* 1d0-1df */ - 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, /* 1e0-1ef */ - 0, 0, -1, -2, 0, -1, 0, 0, 0, -1, 0, -1, 0, -1, 0, -1, /* 1f0-1ff */ -}; - -/* Upper case range - Greek */ -static signed char UniCaseRangeU03a0[47] = { - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,-38,-37,-37,-37, /* 3a0-3af */ - 0,-32,-32,-32,-32,-32,-32,-32,-32,-32,-32,-32,-32,-32,-32,-32, /* 3b0-3bf */ - -32,-32,-31,-32,-32,-32,-32,-32,-32,-32,-32,-32,-64,-63,-63, -}; - -/* Upper case range - Cyrillic */ -static signed char UniCaseRangeU0430[48] = { - -32,-32,-32,-32,-32,-32,-32,-32,-32,-32,-32,-32,-32,-32,-32,-32, /* 430-43f */ - -32,-32,-32,-32,-32,-32,-32,-32,-32,-32,-32,-32,-32,-32,-32,-32, /* 440-44f */ - 0,-80,-80,-80,-80,-80,-80,-80,-80,-80,-80,-80,-80, 0,-80,-80, /* 450-45f */ -}; - -/* Upper case range - Extended cyrillic */ -static signed char UniCaseRangeU0490[61] = { - 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, /* 490-49f */ - 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, /* 4a0-4af */ - 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, /* 4b0-4bf */ - 0, 0, -1, 0, -1, 0, 0, 0, -1, 0, 0, 0, -1, -}; - -/* Upper case range - Extended latin and greek */ -static signed char UniCaseRangeU1e00[509] = { - 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, /* 1e00-1e0f */ - 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, /* 1e10-1e1f */ - 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, /* 1e20-1e2f */ - 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, /* 1e30-1e3f */ - 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, /* 1e40-1e4f */ - 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, /* 1e50-1e5f */ - 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, /* 1e60-1e6f */ - 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, /* 1e70-1e7f */ - 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, /* 1e80-1e8f */ - 0, -1, 0, -1, 0, -1, 0, 0, 0, 0, 0,-59, 0, -1, 0, -1, /* 1e90-1e9f */ - 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, /* 1ea0-1eaf */ - 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, /* 1eb0-1ebf */ - 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, /* 1ec0-1ecf */ - 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, /* 1ed0-1edf */ - 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, /* 1ee0-1eef */ - 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, 0, 0, 0, 0, 0, /* 1ef0-1eff */ - 8, 8, 8, 8, 8, 8, 8, 8, 0, 0, 0, 0, 0, 0, 0, 0, /* 1f00-1f0f */ - 8, 8, 8, 8, 8, 8, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 1f10-1f1f */ - 8, 8, 8, 8, 8, 8, 8, 8, 0, 0, 0, 0, 0, 0, 0, 0, /* 1f20-1f2f */ - 8, 8, 8, 8, 8, 8, 8, 8, 0, 0, 0, 0, 0, 0, 0, 0, /* 1f30-1f3f */ - 8, 8, 8, 8, 8, 8, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 1f40-1f4f */ - 0, 8, 0, 8, 0, 8, 0, 8, 0, 0, 0, 0, 0, 0, 0, 0, /* 1f50-1f5f */ - 8, 8, 8, 8, 8, 8, 8, 8, 0, 0, 0, 0, 0, 0, 0, 0, /* 1f60-1f6f */ - 74, 74, 86, 86, 86, 86,100,100, 0, 0,112,112,126,126, 0, 0, /* 1f70-1f7f */ - 8, 8, 8, 8, 8, 8, 8, 8, 0, 0, 0, 0, 0, 0, 0, 0, /* 1f80-1f8f */ - 8, 8, 8, 8, 8, 8, 8, 8, 0, 0, 0, 0, 0, 0, 0, 0, /* 1f90-1f9f */ - 8, 8, 8, 8, 8, 8, 8, 8, 0, 0, 0, 0, 0, 0, 0, 0, /* 1fa0-1faf */ - 8, 8, 0, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 1fb0-1fbf */ - 0, 0, 0, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 1fc0-1fcf */ - 8, 8, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 1fd0-1fdf */ - 8, 8, 0, 0, 0, 7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 1fe0-1fef */ - 0, 0, 0, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, -}; - -/* Upper case range - Wide latin */ -static signed char UniCaseRangeUff40[27] = { - 0,-32,-32,-32,-32,-32,-32,-32,-32,-32,-32,-32,-32,-32,-32,-32, /* ff40-ff4f */ - -32,-32,-32,-32,-32,-32,-32,-32,-32,-32,-32, -}; - -/* - * Upper Case Range - */ -UNICASERANGE UniUpperRange[] = { - { 0x03a0, 0x03ce, UniCaseRangeU03a0 }, - { 0x0430, 0x045f, UniCaseRangeU0430 }, - { 0x0490, 0x04cc, UniCaseRangeU0490 }, - { 0x1e00, 0x1ffc, UniCaseRangeU1e00 }, - { 0xff40, 0xff5a, UniCaseRangeUff40 }, - { 0 } -}; diff --git a/fs/jfs/namei.c b/fs/jfs/namei.c index 9b030297aa64..57d7a4300210 100644 --- a/fs/jfs/namei.c +++ b/fs/jfs/namei.c @@ -149,7 +149,7 @@ static int jfs_create(struct mnt_idmap *idmap, struct inode *dip, mark_inode_dirty(ip); - dip->i_ctime = dip->i_mtime = current_time(dip); + dip->i_mtime = inode_set_ctime_current(dip); mark_inode_dirty(dip); @@ -284,7 +284,7 @@ static int jfs_mkdir(struct mnt_idmap *idmap, struct inode *dip, /* update parent directory inode */ inc_nlink(dip); /* for '..' from child directory */ - dip->i_ctime = dip->i_mtime = current_time(dip); + dip->i_mtime = inode_set_ctime_current(dip); mark_inode_dirty(dip); rc = txCommit(tid, 2, &iplist[0], 0); @@ -390,7 +390,7 @@ static int jfs_rmdir(struct inode *dip, struct dentry *dentry) /* update parent directory's link count corresponding * to ".." entry of the target directory deleted */ - dip->i_ctime = dip->i_mtime = current_time(dip); + dip->i_mtime = inode_set_ctime_current(dip); inode_dec_link_count(dip); /* @@ -512,7 +512,7 @@ static int jfs_unlink(struct inode *dip, struct dentry *dentry) ASSERT(ip->i_nlink); - ip->i_ctime = dip->i_ctime = dip->i_mtime = current_time(ip); + dip->i_mtime = inode_set_ctime_to_ts(dip, inode_set_ctime_current(ip)); mark_inode_dirty(dip); /* update target's inode */ @@ -827,8 +827,8 @@ static int jfs_link(struct dentry *old_dentry, /* update object inode */ inc_nlink(ip); /* for new link */ - ip->i_ctime = current_time(ip); - dir->i_ctime = dir->i_mtime = current_time(dir); + inode_set_ctime_current(ip); + dir->i_mtime = inode_set_ctime_current(dir); mark_inode_dirty(dir); ihold(ip); @@ -883,7 +883,7 @@ static int jfs_symlink(struct mnt_idmap *idmap, struct inode *dip, struct component_name dname; u32 ssize; /* source pathname size */ struct btstack btstack; - struct inode *ip = d_inode(dentry); + struct inode *ip; s64 xlen = 0; int bmask = 0, xsize; s64 xaddr; @@ -1028,7 +1028,7 @@ static int jfs_symlink(struct mnt_idmap *idmap, struct inode *dip, mark_inode_dirty(ip); - dip->i_ctime = dip->i_mtime = current_time(dip); + dip->i_mtime = inode_set_ctime_current(dip); mark_inode_dirty(dip); /* * commit update of parent directory and link object @@ -1205,7 +1205,7 @@ static int jfs_rename(struct mnt_idmap *idmap, struct inode *old_dir, tblk->xflag |= COMMIT_DELETE; tblk->u.ip = new_ip; } else { - new_ip->i_ctime = current_time(new_ip); + inode_set_ctime_current(new_ip); mark_inode_dirty(new_ip); } } else { @@ -1268,10 +1268,10 @@ static int jfs_rename(struct mnt_idmap *idmap, struct inode *old_dir, /* * Update ctime on changed/moved inodes & mark dirty */ - old_ip->i_ctime = current_time(old_ip); + inode_set_ctime_current(old_ip); mark_inode_dirty(old_ip); - new_dir->i_ctime = new_dir->i_mtime = current_time(new_dir); + new_dir->i_mtime = inode_set_ctime_current(new_dir); mark_inode_dirty(new_dir); /* Build list of inodes modified by this transaction */ @@ -1283,7 +1283,7 @@ static int jfs_rename(struct mnt_idmap *idmap, struct inode *old_dir, if (old_dir != new_dir) { iplist[ipcount++] = new_dir; - old_dir->i_ctime = old_dir->i_mtime = current_time(old_dir); + old_dir->i_mtime = inode_set_ctime_current(old_dir); mark_inode_dirty(old_dir); } @@ -1416,7 +1416,7 @@ static int jfs_mknod(struct mnt_idmap *idmap, struct inode *dir, mark_inode_dirty(ip); - dir->i_ctime = dir->i_mtime = current_time(dir); + dir->i_mtime = inode_set_ctime_current(dir); mark_inode_dirty(dir); @@ -1535,9 +1535,10 @@ const struct inode_operations jfs_dir_inode_operations = { #endif }; +WRAP_DIR_ITER(jfs_readdir) // FIXME! const struct file_operations jfs_dir_operations = { .read = generic_read_dir, - .iterate = jfs_readdir, + .iterate_shared = shared_jfs_readdir, .fsync = jfs_fsync, .unlocked_ioctl = jfs_ioctl, .compat_ioctl = compat_ptr_ioctl, diff --git a/fs/jfs/super.c b/fs/jfs/super.c index d2f82cb7db1b..2e2f7f6d36a0 100644 --- a/fs/jfs/super.c +++ b/fs/jfs/super.c @@ -818,7 +818,7 @@ out: } if (inode->i_size < off+len-towrite) i_size_write(inode, off+len-towrite); - inode->i_mtime = inode->i_ctime = current_time(inode); + inode->i_mtime = inode_set_ctime_current(inode); mark_inode_dirty(inode); inode_unlock(inode); return len - towrite; diff --git a/fs/jfs/xattr.c b/fs/jfs/xattr.c index 931e50018f88..8577ad494e05 100644 --- a/fs/jfs/xattr.c +++ b/fs/jfs/xattr.c @@ -647,7 +647,7 @@ static int ea_put(tid_t tid, struct inode *inode, struct ea_buffer *ea_buf, if (old_blocks) dquot_free_block(inode, old_blocks); - inode->i_ctime = current_time(inode); + inode_set_ctime_current(inode); return 0; } diff --git a/fs/kernel_read_file.c b/fs/kernel_read_file.c index 5d826274570c..c429c42a6867 100644 --- a/fs/kernel_read_file.c +++ b/fs/kernel_read_file.c @@ -8,16 +8,16 @@ /** * kernel_read_file() - read file contents into a kernel buffer * - * @file file to read from - * @offset where to start reading from (see below). - * @buf pointer to a "void *" buffer for reading into (if + * @file: file to read from + * @offset: where to start reading from (see below). + * @buf: pointer to a "void *" buffer for reading into (if * *@buf is NULL, a buffer will be allocated, and * @buf_size will be ignored) - * @buf_size size of buf, if already allocated. If @buf not + * @buf_size: size of buf, if already allocated. If @buf not * allocated, this is the largest size to allocate. - * @file_size if non-NULL, the full size of @file will be + * @file_size: if non-NULL, the full size of @file will be * written here. - * @id the kernel_read_file_id identifying the type of + * @id: the kernel_read_file_id identifying the type of * file contents being read (for LSMs to examine) * * @offset must be 0 unless both @buf and @file_size are non-NULL diff --git a/fs/kernfs/dir.c b/fs/kernfs/dir.c index 5a1a4af9d3d2..8b2bd65d70e7 100644 --- a/fs/kernfs/dir.c +++ b/fs/kernfs/dir.c @@ -383,9 +383,11 @@ static int kernfs_link_sibling(struct kernfs_node *kn) rb_insert_color(&kn->rb, &kn->parent->dir.children); /* successfully added, account subdir number */ + down_write(&kernfs_root(kn)->kernfs_iattr_rwsem); if (kernfs_type(kn) == KERNFS_DIR) kn->parent->dir.subdirs++; kernfs_inc_rev(kn->parent); + up_write(&kernfs_root(kn)->kernfs_iattr_rwsem); return 0; } @@ -408,9 +410,11 @@ static bool kernfs_unlink_sibling(struct kernfs_node *kn) if (RB_EMPTY_NODE(&kn->rb)) return false; + down_write(&kernfs_root(kn)->kernfs_iattr_rwsem); if (kernfs_type(kn) == KERNFS_DIR) kn->parent->dir.subdirs--; kernfs_inc_rev(kn->parent); + up_write(&kernfs_root(kn)->kernfs_iattr_rwsem); rb_erase(&kn->rb, &kn->parent->dir.children); RB_CLEAR_NODE(&kn->rb); @@ -556,7 +560,7 @@ void kernfs_put(struct kernfs_node *kn) kfree_const(kn->name); if (kn->iattr) { - simple_xattrs_free(&kn->iattr->xattrs); + simple_xattrs_free(&kn->iattr->xattrs, NULL); kmem_cache_free(kernfs_iattrs_cache, kn->iattr); } spin_lock(&kernfs_idr_lock); diff --git a/fs/kernfs/inode.c b/fs/kernfs/inode.c index b22b74d1a115..922719a343a7 100644 --- a/fs/kernfs/inode.c +++ b/fs/kernfs/inode.c @@ -151,8 +151,7 @@ ssize_t kernfs_iop_listxattr(struct dentry *dentry, char *buf, size_t size) static inline void set_default_inode_attr(struct inode *inode, umode_t mode) { inode->i_mode = mode; - inode->i_atime = inode->i_mtime = - inode->i_ctime = current_time(inode); + inode->i_atime = inode->i_mtime = inode_set_ctime_current(inode); } static inline void set_inode_attr(struct inode *inode, @@ -162,7 +161,7 @@ static inline void set_inode_attr(struct inode *inode, inode->i_gid = attrs->ia_gid; inode->i_atime = attrs->ia_atime; inode->i_mtime = attrs->ia_mtime; - inode->i_ctime = attrs->ia_ctime; + inode_set_ctime_to_ts(inode, attrs->ia_ctime); } static void kernfs_refresh_inode(struct kernfs_node *kn, struct inode *inode) @@ -191,7 +190,7 @@ int kernfs_iop_getattr(struct mnt_idmap *idmap, down_read(&root->kernfs_iattr_rwsem); kernfs_refresh_inode(kn, inode); - generic_fillattr(&nop_mnt_idmap, inode, stat); + generic_fillattr(&nop_mnt_idmap, request_mask, inode, stat); up_read(&root->kernfs_iattr_rwsem); return 0; @@ -306,11 +305,17 @@ int kernfs_xattr_get(struct kernfs_node *kn, const char *name, int kernfs_xattr_set(struct kernfs_node *kn, const char *name, const void *value, size_t size, int flags) { + struct simple_xattr *old_xattr; struct kernfs_iattrs *attrs = kernfs_iattrs(kn); if (!attrs) return -ENOMEM; - return simple_xattr_set(&attrs->xattrs, name, value, size, flags, NULL); + old_xattr = simple_xattr_set(&attrs->xattrs, name, value, size, flags); + if (IS_ERR(old_xattr)) + return PTR_ERR(old_xattr); + + simple_xattr_free(old_xattr); + return 0; } static int kernfs_vfs_xattr_get(const struct xattr_handler *handler, @@ -342,7 +347,7 @@ static int kernfs_vfs_user_xattr_add(struct kernfs_node *kn, { atomic_t *sz = &kn->iattr->user_xattr_size; atomic_t *nr = &kn->iattr->nr_user_xattrs; - ssize_t removed_size; + struct simple_xattr *old_xattr; int ret; if (atomic_inc_return(nr) > KERNFS_MAX_USER_XATTRS) { @@ -355,13 +360,18 @@ static int kernfs_vfs_user_xattr_add(struct kernfs_node *kn, goto dec_size_out; } - ret = simple_xattr_set(xattrs, full_name, value, size, flags, - &removed_size); - - if (!ret && removed_size >= 0) - size = removed_size; - else if (!ret) + old_xattr = simple_xattr_set(xattrs, full_name, value, size, flags); + if (!old_xattr) return 0; + + if (IS_ERR(old_xattr)) { + ret = PTR_ERR(old_xattr); + goto dec_size_out; + } + + ret = 0; + size = old_xattr->size; + simple_xattr_free(old_xattr); dec_size_out: atomic_sub(size, sz); dec_count_out: @@ -376,18 +386,19 @@ static int kernfs_vfs_user_xattr_rm(struct kernfs_node *kn, { atomic_t *sz = &kn->iattr->user_xattr_size; atomic_t *nr = &kn->iattr->nr_user_xattrs; - ssize_t removed_size; - int ret; + struct simple_xattr *old_xattr; - ret = simple_xattr_set(xattrs, full_name, value, size, flags, - &removed_size); + old_xattr = simple_xattr_set(xattrs, full_name, value, size, flags); + if (!old_xattr) + return 0; - if (removed_size >= 0) { - atomic_sub(removed_size, sz); - atomic_dec(nr); - } + if (IS_ERR(old_xattr)) + return PTR_ERR(old_xattr); - return ret; + atomic_sub(old_xattr->size, sz); + atomic_dec(nr); + simple_xattr_free(old_xattr); + return 0; } static int kernfs_vfs_user_xattr_set(const struct xattr_handler *handler, diff --git a/fs/kernfs/mount.c b/fs/kernfs/mount.c index d49606accb07..c4bf26142eec 100644 --- a/fs/kernfs/mount.c +++ b/fs/kernfs/mount.c @@ -16,6 +16,8 @@ #include <linux/namei.h> #include <linux/seq_file.h> #include <linux/exportfs.h> +#include <linux/uuid.h> +#include <linux/statfs.h> #include "kernfs-internal.h" @@ -45,8 +47,15 @@ static int kernfs_sop_show_path(struct seq_file *sf, struct dentry *dentry) return 0; } +static int kernfs_statfs(struct dentry *dentry, struct kstatfs *buf) +{ + simple_statfs(dentry, buf); + buf->f_fsid = uuid_to_fsid(dentry->d_sb->s_uuid.b); + return 0; +} + const struct super_operations kernfs_sops = { - .statfs = simple_statfs, + .statfs = kernfs_statfs, .drop_inode = generic_delete_inode, .evict_inode = kernfs_evict_inode, @@ -351,6 +360,8 @@ int kernfs_get_tree(struct fs_context *fc) } sb->s_flags |= SB_ACTIVE; + uuid_gen(&sb->s_uuid); + down_write(&root->kernfs_supers_rwsem); list_add(&info->node, &info->root->supers); up_write(&root->kernfs_supers_rwsem); diff --git a/fs/libfs.c b/fs/libfs.c index 5b851315eeed..a4eb12757886 100644 --- a/fs/libfs.c +++ b/fs/libfs.c @@ -33,7 +33,7 @@ int simple_getattr(struct mnt_idmap *idmap, const struct path *path, unsigned int query_flags) { struct inode *inode = d_inode(path->dentry); - generic_fillattr(&nop_mnt_idmap, inode, stat); + generic_fillattr(&nop_mnt_idmap, request_mask, inode, stat); stat->blocks = inode->i_mapping->nrpages << (PAGE_SHIFT - 9); return 0; } @@ -239,6 +239,254 @@ const struct inode_operations simple_dir_inode_operations = { }; EXPORT_SYMBOL(simple_dir_inode_operations); +static void offset_set(struct dentry *dentry, u32 offset) +{ + dentry->d_fsdata = (void *)((uintptr_t)(offset)); +} + +static u32 dentry2offset(struct dentry *dentry) +{ + return (u32)((uintptr_t)(dentry->d_fsdata)); +} + +static struct lock_class_key simple_offset_xa_lock; + +/** + * simple_offset_init - initialize an offset_ctx + * @octx: directory offset map to be initialized + * + */ +void simple_offset_init(struct offset_ctx *octx) +{ + xa_init_flags(&octx->xa, XA_FLAGS_ALLOC1); + lockdep_set_class(&octx->xa.xa_lock, &simple_offset_xa_lock); + + /* 0 is '.', 1 is '..', so always start with offset 2 */ + octx->next_offset = 2; +} + +/** + * simple_offset_add - Add an entry to a directory's offset map + * @octx: directory offset ctx to be updated + * @dentry: new dentry being added + * + * Returns zero on success. @so_ctx and the dentry offset are updated. + * Otherwise, a negative errno value is returned. + */ +int simple_offset_add(struct offset_ctx *octx, struct dentry *dentry) +{ + static const struct xa_limit limit = XA_LIMIT(2, U32_MAX); + u32 offset; + int ret; + + if (dentry2offset(dentry) != 0) + return -EBUSY; + + ret = xa_alloc_cyclic(&octx->xa, &offset, dentry, limit, + &octx->next_offset, GFP_KERNEL); + if (ret < 0) + return ret; + + offset_set(dentry, offset); + return 0; +} + +/** + * simple_offset_remove - Remove an entry to a directory's offset map + * @octx: directory offset ctx to be updated + * @dentry: dentry being removed + * + */ +void simple_offset_remove(struct offset_ctx *octx, struct dentry *dentry) +{ + u32 offset; + + offset = dentry2offset(dentry); + if (offset == 0) + return; + + xa_erase(&octx->xa, offset); + offset_set(dentry, 0); +} + +/** + * simple_offset_rename_exchange - exchange rename with directory offsets + * @old_dir: parent of dentry being moved + * @old_dentry: dentry being moved + * @new_dir: destination parent + * @new_dentry: destination dentry + * + * Returns zero on success. Otherwise a negative errno is returned and the + * rename is rolled back. + */ +int simple_offset_rename_exchange(struct inode *old_dir, + struct dentry *old_dentry, + struct inode *new_dir, + struct dentry *new_dentry) +{ + struct offset_ctx *old_ctx = old_dir->i_op->get_offset_ctx(old_dir); + struct offset_ctx *new_ctx = new_dir->i_op->get_offset_ctx(new_dir); + u32 old_index = dentry2offset(old_dentry); + u32 new_index = dentry2offset(new_dentry); + int ret; + + simple_offset_remove(old_ctx, old_dentry); + simple_offset_remove(new_ctx, new_dentry); + + ret = simple_offset_add(new_ctx, old_dentry); + if (ret) + goto out_restore; + + ret = simple_offset_add(old_ctx, new_dentry); + if (ret) { + simple_offset_remove(new_ctx, old_dentry); + goto out_restore; + } + + ret = simple_rename_exchange(old_dir, old_dentry, new_dir, new_dentry); + if (ret) { + simple_offset_remove(new_ctx, old_dentry); + simple_offset_remove(old_ctx, new_dentry); + goto out_restore; + } + return 0; + +out_restore: + offset_set(old_dentry, old_index); + xa_store(&old_ctx->xa, old_index, old_dentry, GFP_KERNEL); + offset_set(new_dentry, new_index); + xa_store(&new_ctx->xa, new_index, new_dentry, GFP_KERNEL); + return ret; +} + +/** + * simple_offset_destroy - Release offset map + * @octx: directory offset ctx that is about to be destroyed + * + * During fs teardown (eg. umount), a directory's offset map might still + * contain entries. xa_destroy() cleans out anything that remains. + */ +void simple_offset_destroy(struct offset_ctx *octx) +{ + xa_destroy(&octx->xa); +} + +/** + * offset_dir_llseek - Advance the read position of a directory descriptor + * @file: an open directory whose position is to be updated + * @offset: a byte offset + * @whence: enumerator describing the starting position for this update + * + * SEEK_END, SEEK_DATA, and SEEK_HOLE are not supported for directories. + * + * Returns the updated read position if successful; otherwise a + * negative errno is returned and the read position remains unchanged. + */ +static loff_t offset_dir_llseek(struct file *file, loff_t offset, int whence) +{ + switch (whence) { + case SEEK_CUR: + offset += file->f_pos; + fallthrough; + case SEEK_SET: + if (offset >= 0) + break; + fallthrough; + default: + return -EINVAL; + } + + return vfs_setpos(file, offset, U32_MAX); +} + +static struct dentry *offset_find_next(struct xa_state *xas) +{ + struct dentry *child, *found = NULL; + + rcu_read_lock(); + child = xas_next_entry(xas, U32_MAX); + if (!child) + goto out; + spin_lock(&child->d_lock); + if (simple_positive(child)) + found = dget_dlock(child); + spin_unlock(&child->d_lock); +out: + rcu_read_unlock(); + return found; +} + +static bool offset_dir_emit(struct dir_context *ctx, struct dentry *dentry) +{ + u32 offset = dentry2offset(dentry); + struct inode *inode = d_inode(dentry); + + return ctx->actor(ctx, dentry->d_name.name, dentry->d_name.len, offset, + inode->i_ino, fs_umode_to_dtype(inode->i_mode)); +} + +static void offset_iterate_dir(struct inode *inode, struct dir_context *ctx) +{ + struct offset_ctx *so_ctx = inode->i_op->get_offset_ctx(inode); + XA_STATE(xas, &so_ctx->xa, ctx->pos); + struct dentry *dentry; + + while (true) { + dentry = offset_find_next(&xas); + if (!dentry) + break; + + if (!offset_dir_emit(ctx, dentry)) { + dput(dentry); + break; + } + + dput(dentry); + ctx->pos = xas.xa_index + 1; + } +} + +/** + * offset_readdir - Emit entries starting at offset @ctx->pos + * @file: an open directory to iterate over + * @ctx: directory iteration context + * + * Caller must hold @file's i_rwsem to prevent insertion or removal of + * entries during this call. + * + * On entry, @ctx->pos contains an offset that represents the first entry + * to be read from the directory. + * + * The operation continues until there are no more entries to read, or + * until the ctx->actor indicates there is no more space in the caller's + * output buffer. + * + * On return, @ctx->pos contains an offset that will read the next entry + * in this directory when offset_readdir() is called again with @ctx. + * + * Return values: + * %0 - Complete + */ +static int offset_readdir(struct file *file, struct dir_context *ctx) +{ + struct dentry *dir = file->f_path.dentry; + + lockdep_assert_held(&d_inode(dir)->i_rwsem); + + if (!dir_emit_dots(file, ctx)) + return 0; + + offset_iterate_dir(d_inode(dir), ctx); + return 0; +} + +const struct file_operations simple_offset_dir_operations = { + .llseek = offset_dir_llseek, + .iterate_shared = offset_readdir, + .read = generic_read_dir, + .fsync = noop_fsync, +}; + static struct dentry *find_next_child(struct dentry *parent, struct dentry *prev) { struct dentry *child = NULL; @@ -275,7 +523,7 @@ void simple_recursive_removal(struct dentry *dentry, while ((child = find_next_child(this, victim)) == NULL) { // kill and ascend // update metadata while it's still locked - inode->i_ctime = current_time(inode); + inode_set_ctime_current(inode); clear_nlink(inode); inode_unlock(inode); victim = this; @@ -293,8 +541,7 @@ void simple_recursive_removal(struct dentry *dentry, dput(victim); // unpin it } if (victim == dentry) { - inode->i_ctime = inode->i_mtime = - current_time(inode); + inode->i_mtime = inode_set_ctime_current(inode); if (d_is_dir(dentry)) drop_nlink(inode); inode_unlock(inode); @@ -335,7 +582,7 @@ static int pseudo_fs_fill_super(struct super_block *s, struct fs_context *fc) */ root->i_ino = 1; root->i_mode = S_IFDIR | S_IRUSR | S_IWUSR; - root->i_atime = root->i_mtime = root->i_ctime = current_time(root); + root->i_atime = root->i_mtime = inode_set_ctime_current(root); s->s_root = d_make_root(root); if (!s->s_root) return -ENOMEM; @@ -391,7 +638,8 @@ int simple_link(struct dentry *old_dentry, struct inode *dir, struct dentry *den { struct inode *inode = d_inode(old_dentry); - inode->i_ctime = dir->i_ctime = dir->i_mtime = current_time(inode); + dir->i_mtime = inode_set_ctime_to_ts(dir, + inode_set_ctime_current(inode)); inc_nlink(inode); ihold(inode); dget(dentry); @@ -425,7 +673,8 @@ int simple_unlink(struct inode *dir, struct dentry *dentry) { struct inode *inode = d_inode(dentry); - inode->i_ctime = dir->i_ctime = dir->i_mtime = current_time(inode); + dir->i_mtime = inode_set_ctime_to_ts(dir, + inode_set_ctime_current(inode)); drop_nlink(inode); dput(dentry); return 0; @@ -444,6 +693,31 @@ int simple_rmdir(struct inode *dir, struct dentry *dentry) } EXPORT_SYMBOL(simple_rmdir); +/** + * simple_rename_timestamp - update the various inode timestamps for rename + * @old_dir: old parent directory + * @old_dentry: dentry that is being renamed + * @new_dir: new parent directory + * @new_dentry: target for rename + * + * POSIX mandates that the old and new parent directories have their ctime and + * mtime updated, and that inodes of @old_dentry and @new_dentry (if any), have + * their ctime updated. + */ +void simple_rename_timestamp(struct inode *old_dir, struct dentry *old_dentry, + struct inode *new_dir, struct dentry *new_dentry) +{ + struct inode *newino = d_inode(new_dentry); + + old_dir->i_mtime = inode_set_ctime_current(old_dir); + if (new_dir != old_dir) + new_dir->i_mtime = inode_set_ctime_current(new_dir); + inode_set_ctime_current(d_inode(old_dentry)); + if (newino) + inode_set_ctime_current(newino); +} +EXPORT_SYMBOL_GPL(simple_rename_timestamp); + int simple_rename_exchange(struct inode *old_dir, struct dentry *old_dentry, struct inode *new_dir, struct dentry *new_dentry) { @@ -459,11 +733,7 @@ int simple_rename_exchange(struct inode *old_dir, struct dentry *old_dentry, inc_nlink(old_dir); } } - old_dir->i_ctime = old_dir->i_mtime = - new_dir->i_ctime = new_dir->i_mtime = - d_inode(old_dentry)->i_ctime = - d_inode(new_dentry)->i_ctime = current_time(old_dir); - + simple_rename_timestamp(old_dir, old_dentry, new_dir, new_dentry); return 0; } EXPORT_SYMBOL_GPL(simple_rename_exchange); @@ -472,7 +742,6 @@ int simple_rename(struct mnt_idmap *idmap, struct inode *old_dir, struct dentry *old_dentry, struct inode *new_dir, struct dentry *new_dentry, unsigned int flags) { - struct inode *inode = d_inode(old_dentry); int they_are_dirs = d_is_dir(old_dentry); if (flags & ~(RENAME_NOREPLACE | RENAME_EXCHANGE)) @@ -495,9 +764,7 @@ int simple_rename(struct mnt_idmap *idmap, struct inode *old_dir, inc_nlink(new_dir); } - old_dir->i_ctime = old_dir->i_mtime = new_dir->i_ctime = - new_dir->i_mtime = inode->i_ctime = current_time(old_dir); - + simple_rename_timestamp(old_dir, old_dentry, new_dir, new_dentry); return 0; } EXPORT_SYMBOL(simple_rename); @@ -548,21 +815,20 @@ int simple_write_begin(struct file *file, struct address_space *mapping, loff_t pos, unsigned len, struct page **pagep, void **fsdata) { - struct page *page; - pgoff_t index; - - index = pos >> PAGE_SHIFT; + struct folio *folio; - page = grab_cache_page_write_begin(mapping, index); - if (!page) - return -ENOMEM; + folio = __filemap_get_folio(mapping, pos / PAGE_SIZE, FGP_WRITEBEGIN, + mapping_gfp_mask(mapping)); + if (IS_ERR(folio)) + return PTR_ERR(folio); - *pagep = page; + *pagep = &folio->page; - if (!PageUptodate(page) && (len != PAGE_SIZE)) { - unsigned from = pos & (PAGE_SIZE - 1); + if (!folio_test_uptodate(folio) && (len != folio_size(folio))) { + size_t from = offset_in_folio(folio, pos); - zero_user_segments(page, 0, from, from + len, PAGE_SIZE); + folio_zero_segments(folio, 0, from, + from + len, folio_size(folio)); } return 0; } @@ -594,17 +860,18 @@ static int simple_write_end(struct file *file, struct address_space *mapping, loff_t pos, unsigned len, unsigned copied, struct page *page, void *fsdata) { - struct inode *inode = page->mapping->host; + struct folio *folio = page_folio(page); + struct inode *inode = folio->mapping->host; loff_t last_pos = pos + copied; - /* zero the stale part of the page if we did a short copy */ - if (!PageUptodate(page)) { + /* zero the stale part of the folio if we did a short copy */ + if (!folio_test_uptodate(folio)) { if (copied < len) { - unsigned from = pos & (PAGE_SIZE - 1); + size_t from = offset_in_folio(folio, pos); - zero_user(page, from + copied, len - copied); + folio_zero_range(folio, from + copied, len - copied); } - SetPageUptodate(page); + folio_mark_uptodate(folio); } /* * No need to use i_size_read() here, the i_size @@ -613,9 +880,9 @@ static int simple_write_end(struct file *file, struct address_space *mapping, if (last_pos > inode->i_size) i_size_write(inode, last_pos); - set_page_dirty(page); - unlock_page(page); - put_page(page); + folio_mark_dirty(folio); + folio_unlock(folio); + folio_put(folio); return copied; } @@ -659,7 +926,7 @@ int simple_fill_super(struct super_block *s, unsigned long magic, */ inode->i_ino = 1; inode->i_mode = S_IFDIR | 0755; - inode->i_atime = inode->i_mtime = inode->i_ctime = current_time(inode); + inode->i_atime = inode->i_mtime = inode_set_ctime_current(inode); inode->i_op = &simple_dir_inode_operations; inode->i_fop = &simple_dir_operations; set_nlink(inode, 2); @@ -685,7 +952,7 @@ int simple_fill_super(struct super_block *s, unsigned long magic, goto out; } inode->i_mode = S_IFREG | files->mode; - inode->i_atime = inode->i_mtime = inode->i_ctime = current_time(inode); + inode->i_atime = inode->i_mtime = inode_set_ctime_current(inode); inode->i_fop = files->ops; inode->i_ino = i; d_add(dentry, inode); @@ -1253,7 +1520,7 @@ struct inode *alloc_anon_inode(struct super_block *s) inode->i_uid = current_fsuid(); inode->i_gid = current_fsgid(); inode->i_flags |= S_PRIVATE; - inode->i_atime = inode->i_mtime = inode->i_ctime = current_time(inode); + inode->i_atime = inode->i_mtime = inode_set_ctime_current(inode); return inode; } EXPORT_SYMBOL(alloc_anon_inode); @@ -1269,7 +1536,7 @@ EXPORT_SYMBOL(alloc_anon_inode); * All arguments are ignored and it just returns -EINVAL. */ int -simple_nosetlease(struct file *filp, long arg, struct file_lock **flp, +simple_nosetlease(struct file *filp, int arg, struct file_lock **flp, void **priv) { return -EINVAL; @@ -1315,7 +1582,7 @@ static int empty_dir_getattr(struct mnt_idmap *idmap, u32 request_mask, unsigned int query_flags) { struct inode *inode = d_inode(path->dentry); - generic_fillattr(&nop_mnt_idmap, inode, stat); + generic_fillattr(&nop_mnt_idmap, request_mask, inode, stat); return 0; } @@ -1381,16 +1648,6 @@ bool is_empty_dir_inode(struct inode *inode) } #if IS_ENABLED(CONFIG_UNICODE) -/* - * Determine if the name of a dentry should be casefolded. - * - * Return: if names will need casefolding - */ -static bool needs_casefold(const struct inode *dir) -{ - return IS_CASEFOLDED(dir) && dir->i_sb->s_encoding; -} - /** * generic_ci_d_compare - generic d_compare implementation for casefolding filesystems * @dentry: dentry whose name we are checking against @@ -1411,7 +1668,7 @@ static int generic_ci_d_compare(const struct dentry *dentry, unsigned int len, char strbuf[DNAME_INLINE_LEN]; int ret; - if (!dir || !needs_casefold(dir)) + if (!dir || !IS_CASEFOLDED(dir)) goto fallback; /* * If the dentry name is stored in-line, then it may be concurrently @@ -1453,7 +1710,7 @@ static int generic_ci_d_hash(const struct dentry *dentry, struct qstr *str) const struct unicode_map *um = sb->s_encoding; int ret = 0; - if (!dir || !needs_casefold(dir)) + if (!dir || !IS_CASEFOLDED(dir)) return 0; ret = utf8_casefold_hash(um, dentry, str); diff --git a/fs/lockd/mon.c b/fs/lockd/mon.c index 1d9488cf0534..87a0f207df0b 100644 --- a/fs/lockd/mon.c +++ b/fs/lockd/mon.c @@ -276,6 +276,9 @@ static struct nsm_handle *nsm_create_handle(const struct sockaddr *sap, { struct nsm_handle *new; + if (!hostname) + return NULL; + new = kzalloc(sizeof(*new) + hostname_len + 1, GFP_KERNEL); if (unlikely(new == NULL)) return NULL; diff --git a/fs/lockd/svc.c b/fs/lockd/svc.c index 22d3ff3818f5..6579948070a4 100644 --- a/fs/lockd/svc.c +++ b/fs/lockd/svc.c @@ -45,7 +45,6 @@ #define NLMDBG_FACILITY NLMDBG_SVC #define LOCKD_BUFSIZE (1024 + NLMSVC_XDRSIZE) -#define ALLOWED_SIGS (sigmask(SIGKILL)) static struct svc_program nlmsvc_program; @@ -57,6 +56,12 @@ static unsigned int nlmsvc_users; static struct svc_serv *nlmsvc_serv; unsigned long nlmsvc_timeout; +static void nlmsvc_request_retry(struct timer_list *tl) +{ + svc_wake_up(nlmsvc_serv); +} +DEFINE_TIMER(nlmsvc_retry, nlmsvc_request_retry); + unsigned int lockd_net_id; /* @@ -111,26 +116,12 @@ static void set_grace_period(struct net *net) schedule_delayed_work(&ln->grace_period_end, grace_period); } -static void restart_grace(void) -{ - if (nlmsvc_ops) { - struct net *net = &init_net; - struct lockd_net *ln = net_generic(net, lockd_net_id); - - cancel_delayed_work_sync(&ln->grace_period_end); - locks_end_grace(&ln->lockd_manager); - nlmsvc_invalidate_all(); - set_grace_period(net); - } -} - /* * This is the lockd kernel thread */ static int lockd(void *vrqstp) { - int err = 0; struct svc_rqst *rqstp = vrqstp; struct net *net = &init_net; struct lockd_net *ln = net_generic(net, lockd_net_id); @@ -138,9 +129,6 @@ lockd(void *vrqstp) /* try_to_freeze() is called from svc_recv() */ set_freezable(); - /* Allow SIGKILL to tell lockd to drop all of its locks */ - allow_signal(SIGKILL); - dprintk("NFS locking service started (ver " LOCKD_VERSION ").\n"); /* @@ -148,33 +136,12 @@ lockd(void *vrqstp) * NFS mount or NFS daemon has gone away. */ while (!kthread_should_stop()) { - long timeout = MAX_SCHEDULE_TIMEOUT; - RPC_IFDEBUG(char buf[RPC_MAX_ADDRBUFLEN]); - /* update sv_maxconn if it has changed */ rqstp->rq_server->sv_maxconn = nlm_max_connections; - if (signalled()) { - flush_signals(current); - restart_grace(); - continue; - } - - timeout = nlmsvc_retry_blocked(); - - /* - * Find a socket with data available and call its - * recvfrom routine. - */ - err = svc_recv(rqstp, timeout); - if (err == -EAGAIN || err == -EINTR) - continue; - dprintk("lockd: request from %s\n", - svc_print_addr(rqstp, buf, sizeof(buf))); - - svc_process(rqstp); + nlmsvc_retry_blocked(); + svc_recv(rqstp); } - flush_signals(current); if (nlmsvc_ops) nlmsvc_invalidate_all(); nlm_shutdown_hosts(); @@ -407,6 +374,7 @@ static void lockd_put(void) #endif svc_set_num_threads(nlmsvc_serv, NULL, 0); + timer_delete_sync(&nlmsvc_retry); nlmsvc_serv = NULL; dprintk("lockd_down: service destroyed\n"); } @@ -538,7 +506,7 @@ static inline int is_callback(u32 proc) } -static int lockd_authenticate(struct svc_rqst *rqstp) +static enum svc_auth_status lockd_authenticate(struct svc_rqst *rqstp) { rqstp->rq_client = NULL; switch (rqstp->rq_authop->flavour) { diff --git a/fs/lockd/svclock.c b/fs/lockd/svclock.c index c43ccdf28ed9..43aeba9de55c 100644 --- a/fs/lockd/svclock.c +++ b/fs/lockd/svclock.c @@ -131,12 +131,14 @@ static void nlmsvc_insert_block(struct nlm_block *block, unsigned long when) static inline void nlmsvc_remove_block(struct nlm_block *block) { + spin_lock(&nlm_blocked_lock); if (!list_empty(&block->b_list)) { - spin_lock(&nlm_blocked_lock); list_del_init(&block->b_list); spin_unlock(&nlm_blocked_lock); nlmsvc_release_block(block); + return; } + spin_unlock(&nlm_blocked_lock); } /* @@ -152,6 +154,7 @@ nlmsvc_lookup_block(struct nlm_file *file, struct nlm_lock *lock) file, lock->fl.fl_pid, (long long)lock->fl.fl_start, (long long)lock->fl.fl_end, lock->fl.fl_type); + spin_lock(&nlm_blocked_lock); list_for_each_entry(block, &nlm_blocked, b_list) { fl = &block->b_call->a_args.lock.fl; dprintk("lockd: check f=%p pd=%d %Ld-%Ld ty=%d cookie=%s\n", @@ -161,9 +164,11 @@ nlmsvc_lookup_block(struct nlm_file *file, struct nlm_lock *lock) nlmdbg_cookie2a(&block->b_call->a_args.cookie)); if (block->b_file == file && nlm_compare_locks(fl, &lock->fl)) { kref_get(&block->b_count); + spin_unlock(&nlm_blocked_lock); return block; } } + spin_unlock(&nlm_blocked_lock); return NULL; } @@ -185,16 +190,19 @@ nlmsvc_find_block(struct nlm_cookie *cookie) { struct nlm_block *block; + spin_lock(&nlm_blocked_lock); list_for_each_entry(block, &nlm_blocked, b_list) { if (nlm_cookie_match(&block->b_call->a_args.cookie,cookie)) goto found; } + spin_unlock(&nlm_blocked_lock); return NULL; found: dprintk("nlmsvc_find_block(%s): block=%p\n", nlmdbg_cookie2a(cookie), block); kref_get(&block->b_count); + spin_unlock(&nlm_blocked_lock); return block; } @@ -317,6 +325,7 @@ void nlmsvc_traverse_blocks(struct nlm_host *host, restart: mutex_lock(&file->f_mutex); + spin_lock(&nlm_blocked_lock); list_for_each_entry_safe(block, next, &file->f_blocks, b_flist) { if (!match(block->b_host, host)) continue; @@ -325,11 +334,13 @@ restart: if (list_empty(&block->b_list)) continue; kref_get(&block->b_count); + spin_unlock(&nlm_blocked_lock); mutex_unlock(&file->f_mutex); nlmsvc_unlink_block(block); nlmsvc_release_block(block); goto restart; } + spin_unlock(&nlm_blocked_lock); mutex_unlock(&file->f_mutex); } @@ -1008,7 +1019,7 @@ retry_deferred_block(struct nlm_block *block) * picks up locks that can be granted, or grant notifications that must * be retransmitted. */ -unsigned long +void nlmsvc_retry_blocked(void) { unsigned long timeout = MAX_SCHEDULE_TIMEOUT; @@ -1038,5 +1049,6 @@ nlmsvc_retry_blocked(void) } spin_unlock(&nlm_blocked_lock); - return timeout; + if (timeout < MAX_SCHEDULE_TIMEOUT) + mod_timer(&nlmsvc_retry, jiffies + timeout); } diff --git a/fs/locks.c b/fs/locks.c index df8b26a42524..76ad05f8070a 100644 --- a/fs/locks.c +++ b/fs/locks.c @@ -438,7 +438,7 @@ static void flock_make_lock(struct file *filp, struct file_lock *fl, int type) fl->fl_end = OFFSET_MAX; } -static int assign_type(struct file_lock *fl, long type) +static int assign_type(struct file_lock *fl, int type) { switch (type) { case F_RDLCK: @@ -549,7 +549,7 @@ static const struct lock_manager_operations lease_manager_ops = { /* * Initialize a lease, use the default lock manager operations */ -static int lease_init(struct file *filp, long type, struct file_lock *fl) +static int lease_init(struct file *filp, int type, struct file_lock *fl) { if (assign_type(fl, type) != 0) return -EINVAL; @@ -567,7 +567,7 @@ static int lease_init(struct file *filp, long type, struct file_lock *fl) } /* Allocate a file_lock initialised to this type of lease */ -static struct file_lock *lease_alloc(struct file *filp, long type) +static struct file_lock *lease_alloc(struct file *filp, int type) { struct file_lock *fl = locks_alloc_lock(); int error = -ENOMEM; @@ -868,6 +868,21 @@ static bool posix_locks_conflict(struct file_lock *caller_fl, return locks_conflict(caller_fl, sys_fl); } +/* Determine if lock sys_fl blocks lock caller_fl. Used on xx_GETLK + * path so checks for additional GETLK-specific things like F_UNLCK. + */ +static bool posix_test_locks_conflict(struct file_lock *caller_fl, + struct file_lock *sys_fl) +{ + /* F_UNLCK checks any locks on the same fd. */ + if (caller_fl->fl_type == F_UNLCK) { + if (!posix_same_owner(caller_fl, sys_fl)) + return false; + return locks_overlap(caller_fl, sys_fl); + } + return posix_locks_conflict(caller_fl, sys_fl); +} + /* Determine if lock sys_fl blocks lock caller_fl. FLOCK specific * checking before calling the locks_conflict(). */ @@ -901,7 +916,7 @@ posix_test_lock(struct file *filp, struct file_lock *fl) retry: spin_lock(&ctx->flc_lock); list_for_each_entry(cfl, &ctx->flc_posix, fl_list) { - if (!posix_locks_conflict(fl, cfl)) + if (!posix_test_locks_conflict(fl, cfl)) continue; if (cfl->fl_lmops && cfl->fl_lmops->lm_lock_expirable && (*cfl->fl_lmops->lm_lock_expirable)(cfl)) { @@ -1301,6 +1316,7 @@ retry: out: spin_unlock(&ctx->flc_lock); percpu_up_read(&file_rwsem); + trace_posix_lock_inode(inode, request, error); /* * Free any unused locks. */ @@ -1309,7 +1325,6 @@ retry: if (new_fl2) locks_free_lock(new_fl2); locks_dispose_list(&dispose); - trace_posix_lock_inode(inode, request, error); return error; } @@ -1666,7 +1681,7 @@ int fcntl_getlease(struct file *filp) * conflict with the lease we're trying to set. */ static int -check_conflicting_open(struct file *filp, const long arg, int flags) +check_conflicting_open(struct file *filp, const int arg, int flags) { struct inode *inode = file_inode(filp); int self_wcount = 0, self_rcount = 0; @@ -1701,7 +1716,7 @@ check_conflicting_open(struct file *filp, const long arg, int flags) } static int -generic_add_lease(struct file *filp, long arg, struct file_lock **flp, void **priv) +generic_add_lease(struct file *filp, int arg, struct file_lock **flp, void **priv) { struct file_lock *fl, *my_fl = NULL, *lease; struct inode *inode = file_inode(filp); @@ -1729,13 +1744,6 @@ generic_add_lease(struct file *filp, long arg, struct file_lock **flp, void **pr if (is_deleg && !inode_trylock(inode)) return -EAGAIN; - if (is_deleg && arg == F_WRLCK) { - /* Write delegations are not currently supported: */ - inode_unlock(inode); - WARN_ON_ONCE(1); - return -EINVAL; - } - percpu_down_read(&file_rwsem); spin_lock(&ctx->flc_lock); time_out_leases(inode, &dispose); @@ -1859,7 +1867,7 @@ static int generic_delete_lease(struct file *filp, void *owner) * The (input) flp->fl_lmops->lm_break function is required * by break_lease(). */ -int generic_setlease(struct file *filp, long arg, struct file_lock **flp, +int generic_setlease(struct file *filp, int arg, struct file_lock **flp, void **priv) { struct inode *inode = file_inode(filp); @@ -1906,7 +1914,7 @@ lease_notifier_chain_init(void) } static inline void -setlease_notifier(long arg, struct file_lock *lease) +setlease_notifier(int arg, struct file_lock *lease) { if (arg != F_UNLCK) srcu_notifier_call_chain(&lease_notifier_chain, arg, lease); @@ -1942,7 +1950,7 @@ EXPORT_SYMBOL_GPL(lease_unregister_notifier); * may be NULL if the lm_setup operation doesn't require it. */ int -vfs_setlease(struct file *filp, long arg, struct file_lock **lease, void **priv) +vfs_setlease(struct file *filp, int arg, struct file_lock **lease, void **priv) { if (lease) setlease_notifier(arg, *lease); @@ -1953,7 +1961,7 @@ vfs_setlease(struct file *filp, long arg, struct file_lock **lease, void **priv) } EXPORT_SYMBOL_GPL(vfs_setlease); -static int do_fcntl_add_lease(unsigned int fd, struct file *filp, long arg) +static int do_fcntl_add_lease(unsigned int fd, struct file *filp, int arg) { struct file_lock *fl; struct fasync_struct *new; @@ -1988,7 +1996,7 @@ static int do_fcntl_add_lease(unsigned int fd, struct file *filp, long arg) * Note that you also need to call %F_SETSIG to * receive a signal when the lease is broken. */ -int fcntl_setlease(unsigned int fd, struct file *filp, long arg) +int fcntl_setlease(unsigned int fd, struct file *filp, int arg) { if (arg == F_UNLCK) return vfs_setlease(filp, F_UNLCK, NULL, (void **)&filp); @@ -2136,7 +2144,7 @@ EXPORT_SYMBOL_GPL(vfs_test_lock); * @fl: The file_lock who's fl_pid should be translated * @ns: The namespace into which the pid should be translated * - * Used to tranlate a fl_pid into a namespace virtual pid number + * Used to translate a fl_pid into a namespace virtual pid number */ static pid_t locks_translate_pid(struct file_lock *fl, struct pid_namespace *ns) { @@ -2207,7 +2215,8 @@ int fcntl_getlk(struct file *filp, unsigned int cmd, struct flock *flock) if (fl == NULL) return -ENOMEM; error = -EINVAL; - if (flock->l_type != F_RDLCK && flock->l_type != F_WRLCK) + if (cmd != F_OFD_GETLK && flock->l_type != F_RDLCK + && flock->l_type != F_WRLCK) goto out; error = flock_to_posix_lock(filp, fl, flock); @@ -2414,7 +2423,8 @@ int fcntl_getlk64(struct file *filp, unsigned int cmd, struct flock64 *flock) return -ENOMEM; error = -EINVAL; - if (flock->l_type != F_RDLCK && flock->l_type != F_WRLCK) + if (cmd != F_OFD_GETLK && flock->l_type != F_RDLCK + && flock->l_type != F_WRLCK) goto out; error = flock64_to_posix_lock(filp, fl, flock); diff --git a/fs/minix/Kconfig b/fs/minix/Kconfig index de2003974ff0..90ddfad2a75e 100644 --- a/fs/minix/Kconfig +++ b/fs/minix/Kconfig @@ -2,6 +2,7 @@ config MINIX_FS tristate "Minix file system support" depends on BLOCK + select BUFFER_HEAD help Minix is a simple operating system used in many classes about OS's. The minix file system (method to organize files on a hard disk diff --git a/fs/minix/bitmap.c b/fs/minix/bitmap.c index 870207ba23f1..25c08fbfcb9d 100644 --- a/fs/minix/bitmap.c +++ b/fs/minix/bitmap.c @@ -251,7 +251,7 @@ struct inode *minix_new_inode(const struct inode *dir, umode_t mode) } inode_init_owner(&nop_mnt_idmap, inode, dir, mode); inode->i_ino = j; - inode->i_mtime = inode->i_atime = inode->i_ctime = current_time(inode); + inode->i_mtime = inode->i_atime = inode_set_ctime_current(inode); inode->i_blocks = 0; memset(&minix_i(inode)->u, 0, sizeof(minix_i(inode)->u)); insert_inode_hash(inode); diff --git a/fs/minix/dir.c b/fs/minix/dir.c index bf9858f76b6a..20f23e6e58ad 100644 --- a/fs/minix/dir.c +++ b/fs/minix/dir.c @@ -281,7 +281,7 @@ got_it: de->inode = inode->i_ino; } dir_commit_chunk(page, pos, sbi->s_dirsize); - dir->i_mtime = dir->i_ctime = current_time(dir); + dir->i_mtime = inode_set_ctime_current(dir); mark_inode_dirty(dir); err = minix_handle_dirsync(dir); out_put: @@ -313,7 +313,7 @@ int minix_delete_entry(struct minix_dir_entry *de, struct page *page) else de->inode = 0; dir_commit_chunk(page, pos, len); - inode->i_ctime = inode->i_mtime = current_time(inode); + inode->i_mtime = inode_set_ctime_current(inode); mark_inode_dirty(inode); return minix_handle_dirsync(inode); } @@ -436,7 +436,7 @@ int minix_set_link(struct minix_dir_entry *de, struct page *page, else de->inode = inode->i_ino; dir_commit_chunk(page, pos, sbi->s_dirsize); - dir->i_mtime = dir->i_ctime = current_time(dir); + dir->i_mtime = inode_set_ctime_current(dir); mark_inode_dirty(dir); return minix_handle_dirsync(dir); } diff --git a/fs/minix/inode.c b/fs/minix/inode.c index e9fbb5303a22..df575473c1cc 100644 --- a/fs/minix/inode.c +++ b/fs/minix/inode.c @@ -501,10 +501,7 @@ static struct inode *V1_minix_iget(struct inode *inode) i_gid_write(inode, raw_inode->i_gid); set_nlink(inode, raw_inode->i_nlinks); inode->i_size = raw_inode->i_size; - inode->i_mtime.tv_sec = inode->i_atime.tv_sec = inode->i_ctime.tv_sec = raw_inode->i_time; - inode->i_mtime.tv_nsec = 0; - inode->i_atime.tv_nsec = 0; - inode->i_ctime.tv_nsec = 0; + inode->i_mtime = inode->i_atime = inode_set_ctime(inode, raw_inode->i_time, 0); inode->i_blocks = 0; for (i = 0; i < 9; i++) minix_inode->u.i1_data[i] = raw_inode->i_zone[i]; @@ -543,10 +540,9 @@ static struct inode *V2_minix_iget(struct inode *inode) inode->i_size = raw_inode->i_size; inode->i_mtime.tv_sec = raw_inode->i_mtime; inode->i_atime.tv_sec = raw_inode->i_atime; - inode->i_ctime.tv_sec = raw_inode->i_ctime; + inode_set_ctime(inode, raw_inode->i_ctime, 0); inode->i_mtime.tv_nsec = 0; inode->i_atime.tv_nsec = 0; - inode->i_ctime.tv_nsec = 0; inode->i_blocks = 0; for (i = 0; i < 10; i++) minix_inode->u.i2_data[i] = raw_inode->i_zone[i]; @@ -622,7 +618,7 @@ static struct buffer_head * V2_minix_update_inode(struct inode * inode) raw_inode->i_size = inode->i_size; raw_inode->i_mtime = inode->i_mtime.tv_sec; raw_inode->i_atime = inode->i_atime.tv_sec; - raw_inode->i_ctime = inode->i_ctime.tv_sec; + raw_inode->i_ctime = inode_get_ctime(inode).tv_sec; if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode)) raw_inode->i_zone[0] = old_encode_dev(inode->i_rdev); else for (i = 0; i < 10; i++) @@ -660,7 +656,7 @@ int minix_getattr(struct mnt_idmap *idmap, const struct path *path, struct super_block *sb = path->dentry->d_sb; struct inode *inode = d_inode(path->dentry); - generic_fillattr(&nop_mnt_idmap, inode, stat); + generic_fillattr(&nop_mnt_idmap, request_mask, inode, stat); if (INODE_VERSION(inode) == MINIX_V1) stat->blocks = (BLOCK_SIZE / 512) * V1_minix_blocks(stat->size, sb); else diff --git a/fs/minix/itree_common.c b/fs/minix/itree_common.c index 446148792f41..ce18ae37c29d 100644 --- a/fs/minix/itree_common.c +++ b/fs/minix/itree_common.c @@ -131,7 +131,7 @@ static inline int splice_branch(struct inode *inode, /* We are done with atomic stuff, now do the rest of housekeeping */ - inode->i_ctime = current_time(inode); + inode_set_ctime_current(inode); /* had we spliced it onto indirect block? */ if (where->bh) @@ -350,7 +350,7 @@ do_indirects: } first_whole++; } - inode->i_mtime = inode->i_ctime = current_time(inode); + inode->i_mtime = inode_set_ctime_current(inode); mark_inode_dirty(inode); } diff --git a/fs/minix/namei.c b/fs/minix/namei.c index 956d5183828d..114084d5636a 100644 --- a/fs/minix/namei.c +++ b/fs/minix/namei.c @@ -98,7 +98,7 @@ static int minix_link(struct dentry * old_dentry, struct inode * dir, { struct inode *inode = d_inode(old_dentry); - inode->i_ctime = current_time(inode); + inode_set_ctime_current(inode); inode_inc_link_count(inode); ihold(inode); return add_nondir(dentry, inode); @@ -154,7 +154,7 @@ static int minix_unlink(struct inode * dir, struct dentry *dentry) if (err) return err; - inode->i_ctime = dir->i_ctime; + inode_set_ctime_to_ts(inode, inode_get_ctime(dir)); inode_dec_link_count(inode); return 0; } @@ -218,7 +218,7 @@ static int minix_rename(struct mnt_idmap *idmap, put_page(new_page); if (err) goto out_dir; - new_inode->i_ctime = current_time(new_inode); + inode_set_ctime_current(new_inode); if (dir_de) drop_nlink(new_inode); inode_dec_link_count(new_inode); diff --git a/fs/namei.c b/fs/namei.c index e56ff39a79bc..567ee547492b 100644 --- a/fs/namei.c +++ b/fs/namei.c @@ -643,6 +643,8 @@ static bool nd_alloc_stack(struct nameidata *nd) /** * path_connected - Verify that a dentry is below mnt.mnt_root + * @mnt: The mountpoint to check. + * @dentry: The dentry to check. * * Rename can sometimes move a file or directory outside of a bind * mount, path_connected allows those cases to be detected. @@ -1083,6 +1085,7 @@ fs_initcall(init_fs_namei_sysctls); /** * may_follow_link - Check symlink following for unsafe situations * @nd: nameidata pathwalk data + * @inode: Used for idmapping. * * In the case of the sysctl_protected_symlinks sysctl being enabled, * CAP_DAC_OVERRIDE needs to be specifically ignored if the symlink is @@ -2890,7 +2893,7 @@ int path_pts(struct path *path) dput(path->dentry); path->dentry = parent; child = d_hash_and_lookup(parent, &this); - if (!child) + if (IS_ERR_OR_NULL(child)) return -ENOENT; path->dentry = child; diff --git a/fs/nfs/Kconfig b/fs/nfs/Kconfig index b6fc169be1b1..7df2503cef6c 100644 --- a/fs/nfs/Kconfig +++ b/fs/nfs/Kconfig @@ -209,8 +209,6 @@ config NFS_DISABLE_UDP_SUPPORT config NFS_V4_2_READ_PLUS bool "NFS: Enable support for the NFSv4.2 READ_PLUS operation" depends on NFS_V4_2 - default n + default y help - This is intended for developers only. The READ_PLUS operation has - been shown to have issues under specific conditions and should not - be used in production. + Choose Y here to enable use of the NFS v4.2 READ_PLUS operation. diff --git a/fs/nfs/blocklayout/dev.c b/fs/nfs/blocklayout/dev.c index 70f5563a8e81..65cbb5607a5f 100644 --- a/fs/nfs/blocklayout/dev.c +++ b/fs/nfs/blocklayout/dev.c @@ -404,7 +404,7 @@ bl_parse_concat(struct nfs_server *server, struct pnfs_block_dev *d, int ret, i; d->children = kcalloc(v->concat.volumes_count, - sizeof(struct pnfs_block_dev), GFP_KERNEL); + sizeof(struct pnfs_block_dev), gfp_mask); if (!d->children) return -ENOMEM; @@ -433,7 +433,7 @@ bl_parse_stripe(struct nfs_server *server, struct pnfs_block_dev *d, int ret, i; d->children = kcalloc(v->stripe.volumes_count, - sizeof(struct pnfs_block_dev), GFP_KERNEL); + sizeof(struct pnfs_block_dev), gfp_mask); if (!d->children) return -ENOMEM; diff --git a/fs/nfs/callback.c b/fs/nfs/callback.c index 456af7d230cf..466ebf1d41b2 100644 --- a/fs/nfs/callback.c +++ b/fs/nfs/callback.c @@ -74,23 +74,12 @@ out_err: static int nfs4_callback_svc(void *vrqstp) { - int err; struct svc_rqst *rqstp = vrqstp; set_freezable(); - while (!kthread_freezable_should_stop(NULL)) { - - if (signal_pending(current)) - flush_signals(current); - /* - * Listen for a request on the socket - */ - err = svc_recv(rqstp, MAX_SCHEDULE_TIMEOUT); - if (err == -EAGAIN || err == -EINTR) - continue; - svc_process(rqstp); - } + while (!kthread_freezable_should_stop(NULL)) + svc_recv(rqstp); svc_exit_thread(rqstp); return 0; @@ -112,11 +101,7 @@ nfs41_callback_svc(void *vrqstp) set_freezable(); while (!kthread_freezable_should_stop(NULL)) { - - if (signal_pending(current)) - flush_signals(current); - - prepare_to_wait(&serv->sv_cb_waitq, &wq, TASK_INTERRUPTIBLE); + prepare_to_wait(&serv->sv_cb_waitq, &wq, TASK_IDLE); spin_lock_bh(&serv->sv_cb_lock); if (!list_empty(&serv->sv_cb_list)) { req = list_first_entry(&serv->sv_cb_list, @@ -387,7 +372,7 @@ check_gss_callback_principal(struct nfs_client *clp, struct svc_rqst *rqstp) * All other checking done after NFS decoding where the nfs_client can be * found in nfs4_callback_compound */ -static int nfs_callback_authenticate(struct svc_rqst *rqstp) +static enum svc_auth_status nfs_callback_authenticate(struct svc_rqst *rqstp) { rqstp->rq_auth_stat = rpc_autherr_badcred; diff --git a/fs/nfs/callback_proc.c b/fs/nfs/callback_proc.c index c1eda73254e1..6bed1394d748 100644 --- a/fs/nfs/callback_proc.c +++ b/fs/nfs/callback_proc.c @@ -59,7 +59,7 @@ __be32 nfs4_callback_getattr(void *argp, void *resp, res->change_attr = delegation->change_attr; if (nfs_have_writebacks(inode)) res->change_attr++; - res->ctime = inode->i_ctime; + res->ctime = inode_get_ctime(inode); res->mtime = inode->i_mtime; res->bitmap[0] = (FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE) & args->bitmap[0]; diff --git a/fs/nfs/client.c b/fs/nfs/client.c index e4c5f193ed5e..44eca51b2808 100644 --- a/fs/nfs/client.c +++ b/fs/nfs/client.c @@ -517,6 +517,8 @@ int nfs_create_rpc_client(struct nfs_client *clp, .authflavor = flavor, .cred = cl_init->cred, .xprtsec = cl_init->xprtsec, + .connect_timeout = cl_init->connect_timeout, + .reconnect_timeout = cl_init->reconnect_timeout, }; if (test_bit(NFS_CS_DISCRTRY, &clp->cl_flags)) diff --git a/fs/nfs/dir.c b/fs/nfs/dir.c index 8f3112e71a6a..e6a51fd94fea 100644 --- a/fs/nfs/dir.c +++ b/fs/nfs/dir.c @@ -1089,6 +1089,17 @@ static void nfs_do_filldir(struct nfs_readdir_descriptor *desc, for (i = desc->cache_entry_index; i < array->size; i++) { struct nfs_cache_array_entry *ent; + /* + * nfs_readdir_handle_cache_misses return force clear at + * (cache_misses > NFS_READDIR_CACHE_MISS_THRESHOLD) for + * readdir heuristic, NFS_READDIR_CACHE_MISS_THRESHOLD + 1 + * entries need be emitted here. + */ + if (first_emit && i > NFS_READDIR_CACHE_MISS_THRESHOLD + 2) { + desc->eob = true; + break; + } + ent = &array->array[i]; if (!dir_emit(desc->ctx, ent->name, ent->name_len, nfs_compat_user_ino64(ent->ino), ent->d_type)) { @@ -1107,10 +1118,6 @@ static void nfs_do_filldir(struct nfs_readdir_descriptor *desc, desc->ctx->pos = desc->dir_cookie; else desc->ctx->pos++; - if (first_emit && i > NFS_READDIR_CACHE_MISS_THRESHOLD + 1) { - desc->eob = true; - break; - } } if (array->folio_is_eof) desc->eof = !desc->eob; diff --git a/fs/nfs/direct.c b/fs/nfs/direct.c index 9a18c5a69ace..47d892a1d363 100644 --- a/fs/nfs/direct.c +++ b/fs/nfs/direct.c @@ -472,20 +472,44 @@ out: return result; } -static void -nfs_direct_join_group(struct list_head *list, struct inode *inode) +static void nfs_direct_add_page_head(struct list_head *list, + struct nfs_page *req) +{ + struct nfs_page *head = req->wb_head; + + if (!list_empty(&head->wb_list) || !nfs_lock_request(head)) + return; + if (!list_empty(&head->wb_list)) { + nfs_unlock_request(head); + return; + } + list_add(&head->wb_list, list); + kref_get(&head->wb_kref); + kref_get(&head->wb_kref); +} + +static void nfs_direct_join_group(struct list_head *list, struct inode *inode) { - struct nfs_page *req, *next; + struct nfs_page *req, *subreq; list_for_each_entry(req, list, wb_list) { - if (req->wb_head != req || req->wb_this_page == req) + if (req->wb_head != req) { + nfs_direct_add_page_head(&req->wb_list, req); continue; - for (next = req->wb_this_page; - next != req->wb_head; - next = next->wb_this_page) { - nfs_list_remove_request(next); - nfs_release_request(next); } + subreq = req->wb_this_page; + if (subreq == req) + continue; + do { + /* + * Remove subrequests from this list before freeing + * them in the call to nfs_join_page_group(). + */ + if (!list_empty(&subreq->wb_list)) { + nfs_list_remove_request(subreq); + nfs_release_request(subreq); + } + } while ((subreq = subreq->wb_this_page) != req); nfs_join_page_group(req, inode); } } diff --git a/fs/nfs/dns_resolve.c b/fs/nfs/dns_resolve.c index 6603b5cee029..714975e5c0db 100644 --- a/fs/nfs/dns_resolve.c +++ b/fs/nfs/dns_resolve.c @@ -7,14 +7,16 @@ * Resolves DNS hostnames into valid ip addresses */ -#ifdef CONFIG_NFS_USE_KERNEL_DNS - #include <linux/module.h> #include <linux/sunrpc/clnt.h> #include <linux/sunrpc/addr.h> -#include <linux/dns_resolver.h> + #include "dns_resolve.h" +#ifdef CONFIG_NFS_USE_KERNEL_DNS + +#include <linux/dns_resolver.h> + ssize_t nfs_dns_resolve_name(struct net *net, char *name, size_t namelen, struct sockaddr_storage *ss, size_t salen) { @@ -35,7 +37,6 @@ ssize_t nfs_dns_resolve_name(struct net *net, char *name, size_t namelen, #else -#include <linux/module.h> #include <linux/hash.h> #include <linux/string.h> #include <linux/kmod.h> @@ -43,15 +44,12 @@ ssize_t nfs_dns_resolve_name(struct net *net, char *name, size_t namelen, #include <linux/socket.h> #include <linux/seq_file.h> #include <linux/inet.h> -#include <linux/sunrpc/clnt.h> -#include <linux/sunrpc/addr.h> #include <linux/sunrpc/cache.h> #include <linux/sunrpc/svcauth.h> #include <linux/sunrpc/rpc_pipe_fs.h> #include <linux/nfs_fs.h> #include "nfs4_fs.h" -#include "dns_resolve.h" #include "cache_lib.h" #include "netns.h" diff --git a/fs/nfs/file.c b/fs/nfs/file.c index 79b1b3fcd3fc..3f9768810427 100644 --- a/fs/nfs/file.c +++ b/fs/nfs/file.c @@ -200,7 +200,7 @@ nfs_file_splice_read(struct file *in, loff_t *ppos, struct pipe_inode_info *pipe EXPORT_SYMBOL_GPL(nfs_file_splice_read); int -nfs_file_mmap(struct file * file, struct vm_area_struct * vma) +nfs_file_mmap(struct file *file, struct vm_area_struct *vma) { struct inode *inode = file_inode(file); int status; diff --git a/fs/nfs/fscache.h b/fs/nfs/fscache.h index e1706e736c64..2dc64454492b 100644 --- a/fs/nfs/fscache.h +++ b/fs/nfs/fscache.h @@ -116,8 +116,8 @@ static inline void nfs_fscache_update_auxdata(struct nfs_fscache_inode_auxdata * memset(auxdata, 0, sizeof(*auxdata)); auxdata->mtime_sec = inode->i_mtime.tv_sec; auxdata->mtime_nsec = inode->i_mtime.tv_nsec; - auxdata->ctime_sec = inode->i_ctime.tv_sec; - auxdata->ctime_nsec = inode->i_ctime.tv_nsec; + auxdata->ctime_sec = inode_get_ctime(inode).tv_sec; + auxdata->ctime_nsec = inode_get_ctime(inode).tv_nsec; if (NFS_SERVER(inode)->nfs_client->rpc_ops->version == 4) auxdata->change_attr = inode_peek_iversion_raw(inode); diff --git a/fs/nfs/inode.c b/fs/nfs/inode.c index 8172dd4135a1..e21c073158e5 100644 --- a/fs/nfs/inode.c +++ b/fs/nfs/inode.c @@ -514,7 +514,7 @@ nfs_fhget(struct super_block *sb, struct nfs_fh *fh, struct nfs_fattr *fattr) memset(&inode->i_atime, 0, sizeof(inode->i_atime)); memset(&inode->i_mtime, 0, sizeof(inode->i_mtime)); - memset(&inode->i_ctime, 0, sizeof(inode->i_ctime)); + inode_set_ctime(inode, 0, 0); inode_set_iversion_raw(inode, 0); inode->i_size = 0; clear_nlink(inode); @@ -535,7 +535,7 @@ nfs_fhget(struct super_block *sb, struct nfs_fh *fh, struct nfs_fattr *fattr) else if (fattr_supported & NFS_ATTR_FATTR_MTIME) nfs_set_cache_invalid(inode, NFS_INO_INVALID_MTIME); if (fattr->valid & NFS_ATTR_FATTR_CTIME) - inode->i_ctime = fattr->ctime; + inode_set_ctime_to_ts(inode, fattr->ctime); else if (fattr_supported & NFS_ATTR_FATTR_CTIME) nfs_set_cache_invalid(inode, NFS_INO_INVALID_CTIME); if (fattr->valid & NFS_ATTR_FATTR_CHANGE) @@ -731,7 +731,7 @@ void nfs_setattr_update_inode(struct inode *inode, struct iattr *attr, if ((attr->ia_valid & ATTR_GID) != 0) inode->i_gid = attr->ia_gid; if (fattr->valid & NFS_ATTR_FATTR_CTIME) - inode->i_ctime = fattr->ctime; + inode_set_ctime_to_ts(inode, fattr->ctime); else nfs_set_cache_invalid(inode, NFS_INO_INVALID_CHANGE | NFS_INO_INVALID_CTIME); @@ -749,7 +749,7 @@ void nfs_setattr_update_inode(struct inode *inode, struct iattr *attr, nfs_set_cache_invalid(inode, NFS_INO_INVALID_ATIME); if (fattr->valid & NFS_ATTR_FATTR_CTIME) - inode->i_ctime = fattr->ctime; + inode_set_ctime_to_ts(inode, fattr->ctime); else nfs_set_cache_invalid(inode, NFS_INO_INVALID_CHANGE | NFS_INO_INVALID_CTIME); @@ -765,7 +765,7 @@ void nfs_setattr_update_inode(struct inode *inode, struct iattr *attr, nfs_set_cache_invalid(inode, NFS_INO_INVALID_MTIME); if (fattr->valid & NFS_ATTR_FATTR_CTIME) - inode->i_ctime = fattr->ctime; + inode_set_ctime_to_ts(inode, fattr->ctime); else nfs_set_cache_invalid(inode, NFS_INO_INVALID_CHANGE | NFS_INO_INVALID_CTIME); @@ -912,7 +912,7 @@ out_no_revalidate: /* Only return attributes that were revalidated. */ stat->result_mask = nfs_get_valid_attrmask(inode) | request_mask; - generic_fillattr(&nop_mnt_idmap, inode, stat); + generic_fillattr(&nop_mnt_idmap, request_mask, inode, stat); stat->ino = nfs_compat_user_ino64(NFS_FILEID(inode)); stat->change_cookie = inode_peek_iversion_raw(inode); stat->attributes_mask |= STATX_ATTR_CHANGE_MONOTONIC; @@ -1444,11 +1444,11 @@ static void nfs_wcc_update_inode(struct inode *inode, struct nfs_fattr *fattr) nfs_set_cache_invalid(inode, NFS_INO_INVALID_XATTR); } /* If we have atomic WCC data, we may update some attributes */ - ts = inode->i_ctime; + ts = inode_get_ctime(inode); if ((fattr->valid & NFS_ATTR_FATTR_PRECTIME) && (fattr->valid & NFS_ATTR_FATTR_CTIME) && timespec64_equal(&ts, &fattr->pre_ctime)) { - inode->i_ctime = fattr->ctime; + inode_set_ctime_to_ts(inode, fattr->ctime); } ts = inode->i_mtime; @@ -1510,7 +1510,7 @@ static int nfs_check_inode_attributes(struct inode *inode, struct nfs_fattr *fat if ((fattr->valid & NFS_ATTR_FATTR_MTIME) && !timespec64_equal(&ts, &fattr->mtime)) invalid |= NFS_INO_INVALID_MTIME; - ts = inode->i_ctime; + ts = inode_get_ctime(inode); if ((fattr->valid & NFS_ATTR_FATTR_CTIME) && !timespec64_equal(&ts, &fattr->ctime)) invalid |= NFS_INO_INVALID_CTIME; @@ -1997,7 +1997,7 @@ int nfs_post_op_update_inode_force_wcc_locked(struct inode *inode, struct nfs_fa } if ((fattr->valid & NFS_ATTR_FATTR_CTIME) != 0 && (fattr->valid & NFS_ATTR_FATTR_PRECTIME) == 0) { - fattr->pre_ctime = inode->i_ctime; + fattr->pre_ctime = inode_get_ctime(inode); fattr->valid |= NFS_ATTR_FATTR_PRECTIME; } if ((fattr->valid & NFS_ATTR_FATTR_MTIME) != 0 && @@ -2190,7 +2190,7 @@ static int nfs_update_inode(struct inode *inode, struct nfs_fattr *fattr) save_cache_validity & NFS_INO_INVALID_MTIME; if (fattr->valid & NFS_ATTR_FATTR_CTIME) - inode->i_ctime = fattr->ctime; + inode_set_ctime_to_ts(inode, fattr->ctime); else if (fattr_supported & NFS_ATTR_FATTR_CTIME) nfsi->cache_validity |= save_cache_validity & NFS_INO_INVALID_CTIME; diff --git a/fs/nfs/internal.h b/fs/nfs/internal.h index 913c09806c7f..9c9cf764f600 100644 --- a/fs/nfs/internal.h +++ b/fs/nfs/internal.h @@ -82,6 +82,8 @@ struct nfs_client_initdata { const struct rpc_timeout *timeparms; const struct cred *cred; struct xprtsec_parms xprtsec; + unsigned long connect_timeout; + unsigned long reconnect_timeout; }; /* @@ -493,6 +495,7 @@ extern const struct nfs_pgio_completion_ops nfs_async_read_completion_ops; extern void nfs_pageio_init_read(struct nfs_pageio_descriptor *pgio, struct inode *inode, bool force_mds, const struct nfs_pgio_completion_ops *compl_ops); +extern bool nfs_read_alloc_scratch(struct nfs_pgio_header *hdr, size_t size); extern int nfs_read_add_folio(struct nfs_pageio_descriptor *pgio, struct nfs_open_context *ctx, struct folio *folio); diff --git a/fs/nfs/namespace.c b/fs/nfs/namespace.c index 19d51ebf842c..e7494cdd957e 100644 --- a/fs/nfs/namespace.c +++ b/fs/nfs/namespace.c @@ -215,7 +215,8 @@ nfs_namespace_getattr(struct mnt_idmap *idmap, if (NFS_FH(d_inode(path->dentry))->size != 0) return nfs_getattr(idmap, path, stat, request_mask, query_flags); - generic_fillattr(&nop_mnt_idmap, d_inode(path->dentry), stat); + generic_fillattr(&nop_mnt_idmap, request_mask, d_inode(path->dentry), + stat); return 0; } diff --git a/fs/nfs/nfs2xdr.c b/fs/nfs/nfs2xdr.c index 05c3b4b2b3dd..c19093814296 100644 --- a/fs/nfs/nfs2xdr.c +++ b/fs/nfs/nfs2xdr.c @@ -949,7 +949,7 @@ int nfs2_decode_dirent(struct xdr_stream *xdr, struct nfs_entry *entry, error = decode_filename_inline(xdr, &entry->name, &entry->len); if (unlikely(error)) - return -EAGAIN; + return error == -ENAMETOOLONG ? -ENAMETOOLONG : -EAGAIN; /* * The type (size and byte order) of nfscookie isn't defined in diff --git a/fs/nfs/nfs3client.c b/fs/nfs/nfs3client.c index eff3802c5e03..674c012868b1 100644 --- a/fs/nfs/nfs3client.c +++ b/fs/nfs/nfs3client.c @@ -86,6 +86,7 @@ struct nfs_client *nfs3_set_ds_client(struct nfs_server *mds_srv, int ds_proto, unsigned int ds_timeo, unsigned int ds_retrans) { struct rpc_timeout ds_timeout; + unsigned long connect_timeout = ds_timeo * (ds_retrans + 1) * HZ / 10; struct nfs_client *mds_clp = mds_srv->nfs_client; struct nfs_client_initdata cl_init = { .addr = ds_addr, @@ -98,6 +99,8 @@ struct nfs_client *nfs3_set_ds_client(struct nfs_server *mds_srv, .timeparms = &ds_timeout, .cred = mds_srv->cred, .xprtsec = mds_clp->cl_xprtsec, + .connect_timeout = connect_timeout, + .reconnect_timeout = connect_timeout, }; struct nfs_client *clp; char buf[INET6_ADDRSTRLEN + 1]; diff --git a/fs/nfs/nfs3xdr.c b/fs/nfs/nfs3xdr.c index 3b0b650c9c5a..60f032be805a 100644 --- a/fs/nfs/nfs3xdr.c +++ b/fs/nfs/nfs3xdr.c @@ -1991,7 +1991,7 @@ int nfs3_decode_dirent(struct xdr_stream *xdr, struct nfs_entry *entry, error = decode_inline_filename3(xdr, &entry->name, &entry->len); if (unlikely(error)) - return -EAGAIN; + return error == -ENAMETOOLONG ? -ENAMETOOLONG : -EAGAIN; error = decode_cookie3(xdr, &new_cookie); if (unlikely(error)) diff --git a/fs/nfs/nfs42.h b/fs/nfs/nfs42.h index 0fe5aacbcfdf..b59876b01a1e 100644 --- a/fs/nfs/nfs42.h +++ b/fs/nfs/nfs42.h @@ -13,6 +13,7 @@ * more? Need to consider not to pre-alloc too much for a compound. */ #define PNFS_LAYOUTSTATS_MAXDEV (4) +#define READ_PLUS_SCRATCH_SIZE (16) /* nfs4.2proc.c */ #ifdef CONFIG_NFS_V4_2 diff --git a/fs/nfs/nfs42proc.c b/fs/nfs/nfs42proc.c index 63802d195556..063e00aff87e 100644 --- a/fs/nfs/nfs42proc.c +++ b/fs/nfs/nfs42proc.c @@ -471,8 +471,9 @@ ssize_t nfs42_proc_copy(struct file *src, loff_t pos_src, continue; } break; - } else if (err == -NFS4ERR_OFFLOAD_NO_REQS && !args.sync) { - args.sync = true; + } else if (err == -NFS4ERR_OFFLOAD_NO_REQS && + args.sync != res.synchronous) { + args.sync = res.synchronous; dst_exception.retry = 1; continue; } else if ((err == -ESTALE || @@ -1377,7 +1378,6 @@ ssize_t nfs42_proc_getxattr(struct inode *inode, const char *name, for (i = 0; i < np; i++) { pages[i] = alloc_page(GFP_KERNEL); if (!pages[i]) { - np = i + 1; err = -ENOMEM; goto out; } @@ -1401,8 +1401,8 @@ ssize_t nfs42_proc_getxattr(struct inode *inode, const char *name, } while (exception.retry); out: - while (--np >= 0) - __free_page(pages[np]); + while (--i >= 0) + __free_page(pages[i]); kfree(pages); return err; diff --git a/fs/nfs/nfs42xdr.c b/fs/nfs/nfs42xdr.c index 95234208dc9e..9e3ae53e2205 100644 --- a/fs/nfs/nfs42xdr.c +++ b/fs/nfs/nfs42xdr.c @@ -54,10 +54,16 @@ (1 /* data_content4 */ + \ 2 /* data_info4.di_offset */ + \ 1 /* data_info4.di_length */) +#define NFS42_READ_PLUS_HOLE_SEGMENT_SIZE \ + (1 /* data_content4 */ + \ + 2 /* data_info4.di_offset */ + \ + 2 /* data_info4.di_length */) +#define READ_PLUS_SEGMENT_SIZE_DIFF (NFS42_READ_PLUS_HOLE_SEGMENT_SIZE - \ + NFS42_READ_PLUS_DATA_SEGMENT_SIZE) #define decode_read_plus_maxsz (op_decode_hdr_maxsz + \ 1 /* rpr_eof */ + \ 1 /* rpr_contents count */ + \ - NFS42_READ_PLUS_DATA_SEGMENT_SIZE) + NFS42_READ_PLUS_HOLE_SEGMENT_SIZE) #define encode_seek_maxsz (op_encode_hdr_maxsz + \ encode_stateid_maxsz + \ 2 /* offset */ + \ @@ -617,8 +623,8 @@ static void nfs4_xdr_enc_read_plus(struct rpc_rqst *req, encode_putfh(xdr, args->fh, &hdr); encode_read_plus(xdr, args, &hdr); - rpc_prepare_reply_pages(req, args->pages, args->pgbase, - args->count, hdr.replen); + rpc_prepare_reply_pages(req, args->pages, args->pgbase, args->count, + hdr.replen - READ_PLUS_SEGMENT_SIZE_DIFF); encode_nops(&hdr); } @@ -1056,13 +1062,12 @@ static int decode_read_plus(struct xdr_stream *xdr, struct nfs_pgio_res *res) res->eof = be32_to_cpup(p++); segments = be32_to_cpup(p++); if (segments == 0) - return status; + return 0; segs = kmalloc_array(segments, sizeof(*segs), GFP_KERNEL); if (!segs) return -ENOMEM; - status = -EIO; for (i = 0; i < segments; i++) { status = decode_read_plus_segment(xdr, &segs[i]); if (status < 0) @@ -1428,7 +1433,7 @@ static int nfs4_xdr_dec_read_plus(struct rpc_rqst *rqstp, struct compound_hdr hdr; int status; - xdr_set_scratch_buffer(xdr, res->scratch, sizeof(res->scratch)); + xdr_set_scratch_buffer(xdr, res->scratch, READ_PLUS_SCRATCH_SIZE); status = decode_compound_hdr(xdr, &hdr); if (status) diff --git a/fs/nfs/nfs4_fs.h b/fs/nfs/nfs4_fs.h index 4c9f8bd866ab..47c5c1f86d66 100644 --- a/fs/nfs/nfs4_fs.h +++ b/fs/nfs/nfs4_fs.h @@ -328,7 +328,7 @@ extern int update_open_stateid(struct nfs4_state *state, const nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, fmode_t fmode); -extern int nfs4_proc_setlease(struct file *file, long arg, +extern int nfs4_proc_setlease(struct file *file, int arg, struct file_lock **lease, void **priv); extern int nfs4_proc_get_lease_time(struct nfs_client *clp, struct nfs_fsinfo *fsinfo); diff --git a/fs/nfs/nfs4client.c b/fs/nfs/nfs4client.c index d9114a754db7..27fb25567ce7 100644 --- a/fs/nfs/nfs4client.c +++ b/fs/nfs/nfs4client.c @@ -232,6 +232,8 @@ struct nfs_client *nfs4_alloc_client(const struct nfs_client_initdata *cl_init) __set_bit(NFS_CS_DISCRTRY, &clp->cl_flags); __set_bit(NFS_CS_NO_RETRANS_TIMEOUT, &clp->cl_flags); + if (test_bit(NFS_CS_DS, &cl_init->init_flags)) + __set_bit(NFS_CS_DS, &clp->cl_flags); /* * Set up the connection to the server before we add add to the * global list. @@ -1007,6 +1009,7 @@ struct nfs_client *nfs4_set_ds_client(struct nfs_server *mds_srv, if (mds_srv->flags & NFS_MOUNT_NORESVPORT) __set_bit(NFS_CS_NORESVPORT, &cl_init.init_flags); + __set_bit(NFS_CS_DS, &cl_init.init_flags); /* * Set an authflavor equual to the MDS value. Use the MDS nfs_client * cl_ipaddr so as to use the same EXCHANGE_ID co_ownerid as the MDS diff --git a/fs/nfs/nfs4file.c b/fs/nfs/nfs4file.c index 4aeadd6e1a6d..02788c3c85e5 100644 --- a/fs/nfs/nfs4file.c +++ b/fs/nfs/nfs4file.c @@ -438,7 +438,7 @@ void nfs42_ssc_unregister_ops(void) } #endif /* CONFIG_NFS_V4_2 */ -static int nfs4_setlease(struct file *file, long arg, struct file_lock **lease, +static int nfs4_setlease(struct file *file, int arg, struct file_lock **lease, void **priv) { return nfs4_proc_setlease(file, arg, lease, priv); diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index e1a886b58354..794343790ea8 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -5438,18 +5438,8 @@ static bool nfs4_read_plus_not_supported(struct rpc_task *task, return false; } -static inline void nfs4_read_plus_scratch_free(struct nfs_pgio_header *hdr) -{ - if (hdr->res.scratch) { - kfree(hdr->res.scratch); - hdr->res.scratch = NULL; - } -} - static int nfs4_read_done(struct rpc_task *task, struct nfs_pgio_header *hdr) { - nfs4_read_plus_scratch_free(hdr); - if (!nfs4_sequence_done(task, &hdr->res.seq_res)) return -EAGAIN; if (nfs4_read_stateid_changed(task, &hdr->args)) @@ -5469,8 +5459,7 @@ static bool nfs42_read_plus_support(struct nfs_pgio_header *hdr, /* Note: We don't use READ_PLUS with pNFS yet */ if (nfs_server_capable(hdr->inode, NFS_CAP_READ_PLUS) && !hdr->ds_clp) { msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READ_PLUS]; - hdr->res.scratch = kmalloc(32, GFP_KERNEL); - return hdr->res.scratch != NULL; + return nfs_read_alloc_scratch(hdr, READ_PLUS_SCRATCH_SIZE); } return false; } @@ -6004,9 +5993,8 @@ static ssize_t __nfs4_get_acl_uncached(struct inode *inode, void *buf, out_ok: ret = res.acl_len; out_free: - for (i = 0; i < npages; i++) - if (pages[i]) - __free_page(pages[i]); + while (--i >= 0) + __free_page(pages[i]); if (res.acl_scratch) __free_page(res.acl_scratch); kfree(pages); @@ -7181,8 +7169,15 @@ static void nfs4_lock_done(struct rpc_task *task, void *calldata) } else if (!nfs4_update_lock_stateid(lsp, &data->res.stateid)) goto out_restart; break; - case -NFS4ERR_BAD_STATEID: case -NFS4ERR_OLD_STATEID: + if (data->arg.new_lock_owner != 0 && + nfs4_refresh_open_old_stateid(&data->arg.open_stateid, + lsp->ls_state)) + goto out_restart; + if (nfs4_refresh_lock_old_stateid(&data->arg.lock_stateid, lsp)) + goto out_restart; + fallthrough; + case -NFS4ERR_BAD_STATEID: case -NFS4ERR_STALE_STATEID: case -NFS4ERR_EXPIRED: if (data->arg.new_lock_owner != 0) { @@ -7573,7 +7568,7 @@ static int nfs4_delete_lease(struct file *file, void **priv) return generic_setlease(file, F_UNLCK, NULL, priv); } -static int nfs4_add_lease(struct file *file, long arg, struct file_lock **lease, +static int nfs4_add_lease(struct file *file, int arg, struct file_lock **lease, void **priv) { struct inode *inode = file_inode(file); @@ -7591,7 +7586,7 @@ static int nfs4_add_lease(struct file *file, long arg, struct file_lock **lease, return -EAGAIN; } -int nfs4_proc_setlease(struct file *file, long arg, struct file_lock **lease, +int nfs4_proc_setlease(struct file *file, int arg, struct file_lock **lease, void **priv) { switch (arg) { @@ -8792,6 +8787,8 @@ nfs4_run_exchange_id(struct nfs_client *clp, const struct cred *cred, #ifdef CONFIG_NFS_V4_1_MIGRATION calldata->args.flags |= EXCHGID4_FLAG_SUPP_MOVED_MIGR; #endif + if (test_bit(NFS_CS_DS, &clp->cl_flags)) + calldata->args.flags |= EXCHGID4_FLAG_USE_PNFS_DS; msg.rpc_argp = &calldata->args; msg.rpc_resp = &calldata->res; task_setup_data.callback_data = calldata; @@ -8869,6 +8866,8 @@ static int _nfs4_proc_exchange_id(struct nfs_client *clp, const struct cred *cre /* Save the EXCHANGE_ID verifier session trunk tests */ memcpy(clp->cl_confirm.data, argp->verifier.data, sizeof(clp->cl_confirm.data)); + if (resp->flags & EXCHGID4_FLAG_USE_PNFS_DS) + set_bit(NFS_CS_DS, &clp->cl_flags); out: trace_nfs4_exchange_id(clp, status); rpc_put_task(task); diff --git a/fs/nfs/pnfs_dev.c b/fs/nfs/pnfs_dev.c index ddbbf4fcda86..178001c90156 100644 --- a/fs/nfs/pnfs_dev.c +++ b/fs/nfs/pnfs_dev.c @@ -154,7 +154,7 @@ nfs4_get_device_info(struct nfs_server *server, set_bit(NFS_DEVICEID_NOCACHE, &d->flags); out_free_pages: - for (i = 0; i < max_pages; i++) + while (--i >= 0) __free_page(pages[i]); kfree(pages); out_free_pdev: diff --git a/fs/nfs/pnfs_nfs.c b/fs/nfs/pnfs_nfs.c index a0112ad4937a..afd23910f3bf 100644 --- a/fs/nfs/pnfs_nfs.c +++ b/fs/nfs/pnfs_nfs.c @@ -852,6 +852,7 @@ static int _nfs4_pnfs_v3_ds_connect(struct nfs_server *mds_srv, { struct nfs_client *clp = ERR_PTR(-EIO); struct nfs4_pnfs_ds_addr *da; + unsigned long connect_timeout = timeo * (retrans + 1) * HZ / 10; int status = 0; dprintk("--> %s DS %s\n", __func__, ds->ds_remotestr); @@ -870,6 +871,8 @@ static int _nfs4_pnfs_v3_ds_connect(struct nfs_server *mds_srv, .dstaddr = (struct sockaddr *)&da->da_addr, .addrlen = da->da_addrlen, .servername = clp->cl_hostname, + .connect_timeout = connect_timeout, + .reconnect_timeout = connect_timeout, }; if (da->da_transport != clp->cl_proto) @@ -943,7 +946,7 @@ static int _nfs4_pnfs_v4_ds_connect(struct nfs_server *mds_srv, * Test this address for session trunking and * add as an alias */ - xprtdata.cred = nfs4_get_clid_cred(clp), + xprtdata.cred = nfs4_get_clid_cred(clp); rpc_clnt_add_xprt(clp->cl_rpcclient, &xprt_args, rpc_clnt_setup_test_and_add_xprt, &rpcdata); diff --git a/fs/nfs/read.c b/fs/nfs/read.c index f71eeee67e20..7dc21a48e3e7 100644 --- a/fs/nfs/read.c +++ b/fs/nfs/read.c @@ -47,6 +47,8 @@ static struct nfs_pgio_header *nfs_readhdr_alloc(void) static void nfs_readhdr_free(struct nfs_pgio_header *rhdr) { + if (rhdr->res.scratch != NULL) + kfree(rhdr->res.scratch); kmem_cache_free(nfs_rdata_cachep, rhdr); } @@ -108,6 +110,14 @@ void nfs_pageio_reset_read_mds(struct nfs_pageio_descriptor *pgio) } EXPORT_SYMBOL_GPL(nfs_pageio_reset_read_mds); +bool nfs_read_alloc_scratch(struct nfs_pgio_header *hdr, size_t size) +{ + WARN_ON(hdr->res.scratch != NULL); + hdr->res.scratch = kmalloc(size, GFP_KERNEL); + return hdr->res.scratch != NULL; +} +EXPORT_SYMBOL_GPL(nfs_read_alloc_scratch); + static void nfs_readpage_release(struct nfs_page *req, int error) { struct folio *folio = nfs_page_to_folio(req); diff --git a/fs/nfs/super.c b/fs/nfs/super.c index 2284f749d892..0d6473cb00cb 100644 --- a/fs/nfs/super.c +++ b/fs/nfs/super.c @@ -1339,15 +1339,13 @@ error_splat_super: void nfs_kill_super(struct super_block *s) { struct nfs_server *server = NFS_SB(s); - dev_t dev = s->s_dev; nfs_sysfs_move_sb_to_server(server); - generic_shutdown_super(s); + kill_anon_super(s); nfs_fscache_release_super_cookie(s); nfs_free_server(server); - free_anon_bdev(dev); } EXPORT_SYMBOL_GPL(nfs_kill_super); diff --git a/fs/nfs/sysfs.c b/fs/nfs/sysfs.c index acda8f033d30..bf378ecd5d9f 100644 --- a/fs/nfs/sysfs.c +++ b/fs/nfs/sysfs.c @@ -345,8 +345,10 @@ void nfs_sysfs_move_sb_to_server(struct nfs_server *server) int ret = -ENOMEM; s = kasprintf(GFP_KERNEL, "server-%d", server->s_sysfs_id); - if (s) + if (s) { ret = kobject_rename(&server->kobj, s); + kfree(s); + } if (ret < 0) pr_warn("NFS: rename sysfs %s failed (%d)\n", server->kobj.name, ret); diff --git a/fs/nfsd/blocklayoutxdr.c b/fs/nfsd/blocklayoutxdr.c index 8e9c1a0f8d38..1ed2f691ebb9 100644 --- a/fs/nfsd/blocklayoutxdr.c +++ b/fs/nfsd/blocklayoutxdr.c @@ -83,6 +83,15 @@ nfsd4_block_encode_getdeviceinfo(struct xdr_stream *xdr, int len = sizeof(__be32), ret, i; __be32 *p; + /* + * See paragraph 5 of RFC 8881 S18.40.3. + */ + if (!gdp->gd_maxcount) { + if (xdr_stream_encode_u32(xdr, 0) != XDR_UNIT) + return nfserr_resource; + return nfs_ok; + } + p = xdr_reserve_space(xdr, len + sizeof(__be32)); if (!p) return nfserr_resource; diff --git a/fs/nfsd/cache.h b/fs/nfsd/cache.h index 4c9b87850ab1..929248c6ca84 100644 --- a/fs/nfsd/cache.h +++ b/fs/nfsd/cache.h @@ -19,7 +19,7 @@ * typical sockaddr_storage. This is for space reasons, since sockaddr_storage * is much larger than a sockaddr_in6. */ -struct svc_cacherep { +struct nfsd_cacherep { struct { /* Keep often-read xid, csum in the same cache line: */ __be32 k_xid; @@ -84,8 +84,10 @@ int nfsd_net_reply_cache_init(struct nfsd_net *nn); void nfsd_net_reply_cache_destroy(struct nfsd_net *nn); int nfsd_reply_cache_init(struct nfsd_net *); void nfsd_reply_cache_shutdown(struct nfsd_net *); -int nfsd_cache_lookup(struct svc_rqst *); -void nfsd_cache_update(struct svc_rqst *, int, __be32 *); +int nfsd_cache_lookup(struct svc_rqst *rqstp, + struct nfsd_cacherep **cacherep); +void nfsd_cache_update(struct svc_rqst *rqstp, struct nfsd_cacherep *rp, + int cachetype, __be32 *statp); int nfsd_reply_cache_stats_show(struct seq_file *m, void *v); #endif /* NFSCACHE_H */ diff --git a/fs/nfsd/flexfilelayoutxdr.c b/fs/nfsd/flexfilelayoutxdr.c index e81d2a5cf381..bb205328e043 100644 --- a/fs/nfsd/flexfilelayoutxdr.c +++ b/fs/nfsd/flexfilelayoutxdr.c @@ -85,6 +85,15 @@ nfsd4_ff_encode_getdeviceinfo(struct xdr_stream *xdr, int addr_len; __be32 *p; + /* + * See paragraph 5 of RFC 8881 S18.40.3. + */ + if (!gdp->gd_maxcount) { + if (xdr_stream_encode_u32(xdr, 0) != XDR_UNIT) + return nfserr_resource; + return nfs_ok; + } + /* len + padding for two strings */ addr_len = 16 + da->netaddr.netid_len + da->netaddr.addr_len; ver_len = 20; diff --git a/fs/nfsd/nfs3proc.c b/fs/nfsd/nfs3proc.c index fc8d5b7db9f8..268ef57751c4 100644 --- a/fs/nfsd/nfs3proc.c +++ b/fs/nfsd/nfs3proc.c @@ -307,7 +307,9 @@ nfsd3_create_file(struct svc_rqst *rqstp, struct svc_fh *fhp, if (!IS_POSIXACL(inode)) iap->ia_mode &= ~current_umask(); - fh_fill_pre_attrs(fhp); + status = fh_fill_pre_attrs(fhp); + if (status != nfs_ok) + goto out; host_err = vfs_create(&nop_mnt_idmap, inode, child, iap->ia_mode, true); if (host_err < 0) { status = nfserrno(host_err); diff --git a/fs/nfsd/nfs4acl.c b/fs/nfsd/nfs4acl.c index 518203821790..96e786b5e544 100644 --- a/fs/nfsd/nfs4acl.c +++ b/fs/nfsd/nfs4acl.c @@ -441,7 +441,7 @@ struct posix_ace_state_array { * calculated so far: */ struct posix_acl_state { - int empty; + unsigned char valid; struct posix_ace_state owner; struct posix_ace_state group; struct posix_ace_state other; @@ -457,7 +457,6 @@ init_state(struct posix_acl_state *state, int cnt) int alloc; memset(state, 0, sizeof(struct posix_acl_state)); - state->empty = 1; /* * In the worst case, each individual acl could be for a distinct * named user or group, but we don't know which, so we allocate @@ -500,7 +499,7 @@ posix_state_to_acl(struct posix_acl_state *state, unsigned int flags) * and effective cases: when there are no inheritable ACEs, * calls ->set_acl with a NULL ACL structure. */ - if (state->empty && (flags & NFS4_ACL_TYPE_DEFAULT)) + if (!state->valid && (flags & NFS4_ACL_TYPE_DEFAULT)) return NULL; /* @@ -622,11 +621,12 @@ static void process_one_v4_ace(struct posix_acl_state *state, struct nfs4_ace *ace) { u32 mask = ace->access_mask; + short type = ace2type(ace); int i; - state->empty = 0; + state->valid |= type; - switch (ace2type(ace)) { + switch (type) { case ACL_USER_OBJ: if (ace->type == NFS4_ACE_ACCESS_ALLOWED_ACE_TYPE) { allow_bits(&state->owner, mask); @@ -726,6 +726,30 @@ static int nfs4_acl_nfsv4_to_posix(struct nfs4_acl *acl, if (!(ace->flag & NFS4_ACE_INHERIT_ONLY_ACE)) process_one_v4_ace(&effective_acl_state, ace); } + + /* + * At this point, the default ACL may have zeroed-out entries for owner, + * group and other. That usually results in a non-sensical resulting ACL + * that denies all access except to any ACE that was explicitly added. + * + * The setfacl command solves a similar problem with this logic: + * + * "If a Default ACL entry is created, and the Default ACL contains + * no owner, owning group, or others entry, a copy of the ACL + * owner, owning group, or others entry is added to the Default ACL." + * + * Copy any missing ACEs from the effective set, if any ACEs were + * explicitly set. + */ + if (default_acl_state.valid) { + if (!(default_acl_state.valid & ACL_USER_OBJ)) + default_acl_state.owner = effective_acl_state.owner; + if (!(default_acl_state.valid & ACL_GROUP_OBJ)) + default_acl_state.group = effective_acl_state.group; + if (!(default_acl_state.valid & ACL_OTHER)) + default_acl_state.other = effective_acl_state.other; + } + *pacl = posix_state_to_acl(&effective_acl_state, flags); if (IS_ERR(*pacl)) { ret = PTR_ERR(*pacl); diff --git a/fs/nfsd/nfs4proc.c b/fs/nfsd/nfs4proc.c index 5ae670807449..5ca748309c26 100644 --- a/fs/nfsd/nfs4proc.c +++ b/fs/nfsd/nfs4proc.c @@ -297,12 +297,12 @@ nfsd4_create_file(struct svc_rqst *rqstp, struct svc_fh *fhp, } if (d_really_is_positive(child)) { - status = nfs_ok; - /* NFSv4 protocol requires change attributes even though * no change happened. */ - fh_fill_both_attrs(fhp); + status = fh_fill_both_attrs(fhp); + if (status != nfs_ok) + goto out; switch (open->op_createmode) { case NFS4_CREATE_UNCHECKED: @@ -345,7 +345,9 @@ nfsd4_create_file(struct svc_rqst *rqstp, struct svc_fh *fhp, if (!IS_POSIXACL(inode)) iap->ia_mode &= ~current_umask(); - fh_fill_pre_attrs(fhp); + status = fh_fill_pre_attrs(fhp); + if (status != nfs_ok) + goto out; status = nfsd4_vfs_create(fhp, child, open); if (status != nfs_ok) goto out; @@ -380,6 +382,38 @@ out: return status; } +/** + * set_change_info - set up the change_info4 for a reply + * @cinfo: pointer to nfsd4_change_info to be populated + * @fhp: pointer to svc_fh to use as source + * + * Many operations in NFSv4 require change_info4 in the reply. This function + * populates that from the info that we (should!) have already collected. In + * the event that we didn't get any pre-attrs, just zero out both. + */ +static void +set_change_info(struct nfsd4_change_info *cinfo, struct svc_fh *fhp) +{ + cinfo->atomic = (u32)(fhp->fh_pre_saved && fhp->fh_post_saved && !fhp->fh_no_atomic_attr); + cinfo->before_change = fhp->fh_pre_change; + cinfo->after_change = fhp->fh_post_change; + + /* + * If fetching the pre-change attributes failed, then we should + * have already failed the whole operation. We could have still + * failed to fetch post-change attributes however. + * + * If we didn't get post-op attrs, just zero-out the after + * field since we don't know what it should be. If the pre_saved + * field isn't set for some reason, throw warning and just copy + * whatever is in the after field. + */ + if (WARN_ON_ONCE(!fhp->fh_pre_saved)) + cinfo->before_change = 0; + if (!fhp->fh_post_saved) + cinfo->after_change = cinfo->before_change + 1; +} + static __be32 do_open_lookup(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, struct nfsd4_open *open, struct svc_fh **resfh) { @@ -424,11 +458,11 @@ do_open_lookup(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, stru } else { status = nfsd_lookup(rqstp, current_fh, open->op_fname, open->op_fnamelen, *resfh); - if (!status) + if (status == nfs_ok) /* NFSv4 protocol requires change attributes even though * no change happened. */ - fh_fill_both_attrs(current_fh); + status = fh_fill_both_attrs(current_fh); } if (status) goto out; @@ -1313,12 +1347,11 @@ try_again: /* found a match */ if (ni->nsui_busy) { /* wait - and try again */ - prepare_to_wait(&nn->nfsd_ssc_waitq, &wait, - TASK_INTERRUPTIBLE); + prepare_to_wait(&nn->nfsd_ssc_waitq, &wait, TASK_IDLE); spin_unlock(&nn->nfsd_ssc_lock); /* allow 20secs for mount/unmount for now - revisit */ - if (signal_pending(current) || + if (kthread_should_stop() || (schedule_timeout(20*HZ) == 0)) { finish_wait(&nn->nfsd_ssc_waitq, &wait); kfree(work); diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c index 3aefbad4cc09..8534693eb6a4 100644 --- a/fs/nfsd/nfs4state.c +++ b/fs/nfsd/nfs4state.c @@ -649,6 +649,18 @@ find_readable_file(struct nfs4_file *f) return ret; } +static struct nfsd_file * +find_rw_file(struct nfs4_file *f) +{ + struct nfsd_file *ret; + + spin_lock(&f->fi_lock); + ret = nfsd_file_get(f->fi_fds[O_RDWR]); + spin_unlock(&f->fi_lock); + + return ret; +} + struct nfsd_file * find_any_file(struct nfs4_file *f) { @@ -1144,7 +1156,7 @@ static void block_delegations(struct knfsd_fh *fh) static struct nfs4_delegation * alloc_init_deleg(struct nfs4_client *clp, struct nfs4_file *fp, - struct nfs4_clnt_odstate *odstate) + struct nfs4_clnt_odstate *odstate, u32 dl_type) { struct nfs4_delegation *dp; long n; @@ -1170,7 +1182,7 @@ alloc_init_deleg(struct nfs4_client *clp, struct nfs4_file *fp, INIT_LIST_HEAD(&dp->dl_recall_lru); dp->dl_clnt_odstate = odstate; get_clnt_odstate(odstate); - dp->dl_type = NFS4_OPEN_DELEGATE_READ; + dp->dl_type = dl_type; dp->dl_retries = 1; dp->dl_recalled = false; nfsd4_init_cb(&dp->dl_recall, dp->dl_stid.sc_client, @@ -1354,9 +1366,9 @@ static void revoke_delegation(struct nfs4_delegation *dp) trace_nfsd_stid_revoke(&dp->dl_stid); if (clp->cl_minorversion) { + spin_lock(&clp->cl_lock); dp->dl_stid.sc_type = NFS4_REVOKED_DELEG_STID; refcount_inc(&dp->dl_stid.sc_count); - spin_lock(&clp->cl_lock); list_add(&dp->dl_recall_lru, &clp->cl_revoked); spin_unlock(&clp->cl_lock); } @@ -5449,8 +5461,9 @@ nfs4_set_delegation(struct nfsd4_open *open, struct nfs4_ol_stateid *stp, struct nfs4_file *fp = stp->st_stid.sc_file; struct nfs4_clnt_odstate *odstate = stp->st_clnt_odstate; struct nfs4_delegation *dp; - struct nfsd_file *nf; + struct nfsd_file *nf = NULL; struct file_lock *fl; + u32 dl_type; /* * The fi_had_conflict and nfs_get_existing_delegation checks @@ -5460,15 +5473,35 @@ nfs4_set_delegation(struct nfsd4_open *open, struct nfs4_ol_stateid *stp, if (fp->fi_had_conflict) return ERR_PTR(-EAGAIN); - nf = find_readable_file(fp); - if (!nf) { - /* - * We probably could attempt another open and get a read - * delegation, but for now, don't bother until the - * client actually sends us one. - */ - return ERR_PTR(-EAGAIN); + /* + * Try for a write delegation first. RFC8881 section 10.4 says: + * + * "An OPEN_DELEGATE_WRITE delegation allows the client to handle, + * on its own, all opens." + * + * Furthermore the client can use a write delegation for most READ + * operations as well, so we require a O_RDWR file here. + * + * Offer a write delegation in the case of a BOTH open, and ensure + * we get the O_RDWR descriptor. + */ + if ((open->op_share_access & NFS4_SHARE_ACCESS_BOTH) == NFS4_SHARE_ACCESS_BOTH) { + nf = find_rw_file(fp); + dl_type = NFS4_OPEN_DELEGATE_WRITE; } + + /* + * If the file is being opened O_RDONLY or we couldn't get a O_RDWR + * file for some reason, then try for a read delegation instead. + */ + if (!nf && (open->op_share_access & NFS4_SHARE_ACCESS_READ)) { + nf = find_readable_file(fp); + dl_type = NFS4_OPEN_DELEGATE_READ; + } + + if (!nf) + return ERR_PTR(-EAGAIN); + spin_lock(&state_lock); spin_lock(&fp->fi_lock); if (nfs4_delegation_exists(clp, fp)) @@ -5491,11 +5524,11 @@ nfs4_set_delegation(struct nfsd4_open *open, struct nfs4_ol_stateid *stp, return ERR_PTR(status); status = -ENOMEM; - dp = alloc_init_deleg(clp, fp, odstate); + dp = alloc_init_deleg(clp, fp, odstate, dl_type); if (!dp) goto out_delegees; - fl = nfs4_alloc_init_lease(dp, NFS4_OPEN_DELEGATE_READ); + fl = nfs4_alloc_init_lease(dp, dl_type); if (!fl) goto out_clnt_odstate; @@ -5568,10 +5601,28 @@ static void nfsd4_open_deleg_none_ext(struct nfsd4_open *open, int status) } /* - * Attempt to hand out a delegation. + * The Linux NFS server does not offer write delegations to NFSv4.0 + * clients in order to avoid conflicts between write delegations and + * GETATTRs requesting CHANGE or SIZE attributes. + * + * With NFSv4.1 and later minorversions, the SEQUENCE operation that + * begins each COMPOUND contains a client ID. Delegation recall can + * be avoided when the server recognizes the client sending a + * GETATTR also holds write delegation it conflicts with. * - * Note we don't support write delegations, and won't until the vfs has - * proper support for them. + * However, the NFSv4.0 protocol does not enable a server to + * determine that a GETATTR originated from the client holding the + * conflicting delegation versus coming from some other client. Per + * RFC 7530 Section 16.7.5, the server must recall or send a + * CB_GETATTR even when the GETATTR originates from the client that + * holds the conflicting delegation. + * + * An NFSv4.0 client can trigger a pathological situation if it + * always sends a DELEGRETURN preceded by a conflicting GETATTR in + * the same COMPOUND. COMPOUND execution will always stop at the + * GETATTR and the DELEGRETURN will never get executed. The server + * eventually revokes the delegation, which can result in loss of + * open or lock state. */ static void nfs4_open_delegation(struct nfsd4_open *open, struct nfs4_ol_stateid *stp, @@ -5590,8 +5641,6 @@ nfs4_open_delegation(struct nfsd4_open *open, struct nfs4_ol_stateid *stp, case NFS4_OPEN_CLAIM_PREVIOUS: if (!cb_up) open->op_recall = 1; - if (open->op_delegate_type != NFS4_OPEN_DELEGATE_READ) - goto out_no_deleg; break; case NFS4_OPEN_CLAIM_NULL: parent = currentfh; @@ -5606,6 +5655,9 @@ nfs4_open_delegation(struct nfsd4_open *open, struct nfs4_ol_stateid *stp, goto out_no_deleg; if (!cb_up || !(oo->oo_flags & NFS4_OO_CONFIRMED)) goto out_no_deleg; + if (open->op_share_access & NFS4_SHARE_ACCESS_WRITE && + !clp->cl_minorversion) + goto out_no_deleg; break; default: goto out_no_deleg; @@ -5616,8 +5668,13 @@ nfs4_open_delegation(struct nfsd4_open *open, struct nfs4_ol_stateid *stp, memcpy(&open->op_delegate_stateid, &dp->dl_stid.sc_stateid, sizeof(dp->dl_stid.sc_stateid)); - trace_nfsd_deleg_read(&dp->dl_stid.sc_stateid); - open->op_delegate_type = NFS4_OPEN_DELEGATE_READ; + if (open->op_share_access & NFS4_SHARE_ACCESS_WRITE) { + open->op_delegate_type = NFS4_OPEN_DELEGATE_WRITE; + trace_nfsd_deleg_write(&dp->dl_stid.sc_stateid); + } else { + open->op_delegate_type = NFS4_OPEN_DELEGATE_READ; + trace_nfsd_deleg_read(&dp->dl_stid.sc_stateid); + } nfs4_put_stid(&dp->dl_stid); return; out_no_deleg: @@ -8341,3 +8398,68 @@ nfsd4_get_writestateid(struct nfsd4_compound_state *cstate, { get_stateid(cstate, &u->write.wr_stateid); } + +/** + * nfsd4_deleg_getattr_conflict - Recall if GETATTR causes conflict + * @rqstp: RPC transaction context + * @inode: file to be checked for a conflict + * + * This function is called when there is a conflict between a write + * delegation and a change/size GETATTR from another client. The server + * must either use the CB_GETATTR to get the current values of the + * attributes from the client that holds the delegation or recall the + * delegation before replying to the GETATTR. See RFC 8881 section + * 18.7.4. + * + * The current implementation does not support CB_GETATTR yet. However + * this can avoid recalling the delegation could be added in follow up + * work. + * + * Returns 0 if there is no conflict; otherwise an nfs_stat + * code is returned. + */ +__be32 +nfsd4_deleg_getattr_conflict(struct svc_rqst *rqstp, struct inode *inode) +{ + __be32 status; + struct file_lock_context *ctx; + struct file_lock *fl; + struct nfs4_delegation *dp; + + ctx = locks_inode_context(inode); + if (!ctx) + return 0; + spin_lock(&ctx->flc_lock); + list_for_each_entry(fl, &ctx->flc_lease, fl_list) { + if (fl->fl_flags == FL_LAYOUT) + continue; + if (fl->fl_lmops != &nfsd_lease_mng_ops) { + /* + * non-nfs lease, if it's a lease with F_RDLCK then + * we are done; there isn't any write delegation + * on this inode + */ + if (fl->fl_type == F_RDLCK) + break; + goto break_lease; + } + if (fl->fl_type == F_WRLCK) { + dp = fl->fl_owner; + if (dp->dl_recall.cb_clp == *(rqstp->rq_lease_breaker)) { + spin_unlock(&ctx->flc_lock); + return 0; + } +break_lease: + spin_unlock(&ctx->flc_lock); + nfsd_stats_wdeleg_getattr_inc(); + status = nfserrno(nfsd_open_break_lease(inode, NFSD_MAY_READ)); + if (status != nfserr_jukebox || + !nfsd_wait_for_delegreturn(rqstp, inode)) + return status; + return 0; + } + break; + } + spin_unlock(&ctx->flc_lock); + return 0; +} diff --git a/fs/nfsd/nfs4xdr.c b/fs/nfsd/nfs4xdr.c index b30dca7de8cc..2e40c74d2f72 100644 --- a/fs/nfsd/nfs4xdr.c +++ b/fs/nfsd/nfs4xdr.c @@ -2984,6 +2984,11 @@ nfsd4_encode_fattr(struct xdr_stream *xdr, struct svc_fh *fhp, if (status) goto out; } + if (bmval0 & (FATTR4_WORD0_CHANGE | FATTR4_WORD0_SIZE)) { + status = nfsd4_deleg_getattr_conflict(rqstp, d_inode(dentry)); + if (status) + goto out; + } err = vfs_getattr(&path, &stat, STATX_BASIC_STATS | STATX_BTIME | STATX_CHANGE_COOKIE, @@ -3973,17 +3978,20 @@ nfsd4_encode_open(struct nfsd4_compoundres *resp, __be32 nfserr, nfserr = nfsd4_encode_stateid(xdr, &open->op_delegate_stateid); if (nfserr) return nfserr; - p = xdr_reserve_space(xdr, 32); + + p = xdr_reserve_space(xdr, XDR_UNIT * 8); if (!p) return nfserr_resource; *p++ = cpu_to_be32(open->op_recall); /* + * Always flush on close + * * TODO: space_limit's in delegations */ *p++ = cpu_to_be32(NFS4_LIMIT_SIZE); - *p++ = cpu_to_be32(~(u32)0); - *p++ = cpu_to_be32(~(u32)0); + *p++ = xdr_zero; + *p++ = xdr_zero; /* * TODO: ACE's in delegations @@ -4678,20 +4686,17 @@ nfsd4_encode_getdeviceinfo(struct nfsd4_compoundres *resp, __be32 nfserr, *p++ = cpu_to_be32(gdev->gd_layout_type); - /* If maxcount is 0 then just update notifications */ - if (gdev->gd_maxcount != 0) { - ops = nfsd4_layout_ops[gdev->gd_layout_type]; - nfserr = ops->encode_getdeviceinfo(xdr, gdev); - if (nfserr) { - /* - * We don't bother to burden the layout drivers with - * enforcing gd_maxcount, just tell the client to - * come back with a bigger buffer if it's not enough. - */ - if (xdr->buf->len + 4 > gdev->gd_maxcount) - goto toosmall; - return nfserr; - } + ops = nfsd4_layout_ops[gdev->gd_layout_type]; + nfserr = ops->encode_getdeviceinfo(xdr, gdev); + if (nfserr) { + /* + * We don't bother to burden the layout drivers with + * enforcing gd_maxcount, just tell the client to + * come back with a bigger buffer if it's not enough. + */ + if (xdr->buf->len + 4 > gdev->gd_maxcount) + goto toosmall; + return nfserr; } if (gdev->gd_notify_types) { diff --git a/fs/nfsd/nfscache.c b/fs/nfsd/nfscache.c index a8eda1c85829..80621a709510 100644 --- a/fs/nfsd/nfscache.c +++ b/fs/nfsd/nfscache.c @@ -84,11 +84,11 @@ nfsd_hashsize(unsigned int limit) return roundup_pow_of_two(limit / TARGET_BUCKET_SIZE); } -static struct svc_cacherep * -nfsd_reply_cache_alloc(struct svc_rqst *rqstp, __wsum csum, - struct nfsd_net *nn) +static struct nfsd_cacherep * +nfsd_cacherep_alloc(struct svc_rqst *rqstp, __wsum csum, + struct nfsd_net *nn) { - struct svc_cacherep *rp; + struct nfsd_cacherep *rp; rp = kmem_cache_alloc(drc_slab, GFP_KERNEL); if (rp) { @@ -110,36 +110,64 @@ nfsd_reply_cache_alloc(struct svc_rqst *rqstp, __wsum csum, return rp; } -static void -nfsd_reply_cache_free_locked(struct nfsd_drc_bucket *b, struct svc_cacherep *rp, - struct nfsd_net *nn) +static void nfsd_cacherep_free(struct nfsd_cacherep *rp) { - if (rp->c_type == RC_REPLBUFF && rp->c_replvec.iov_base) { - nfsd_stats_drc_mem_usage_sub(nn, rp->c_replvec.iov_len); + if (rp->c_type == RC_REPLBUFF) kfree(rp->c_replvec.iov_base); + kmem_cache_free(drc_slab, rp); +} + +static unsigned long +nfsd_cacherep_dispose(struct list_head *dispose) +{ + struct nfsd_cacherep *rp; + unsigned long freed = 0; + + while (!list_empty(dispose)) { + rp = list_first_entry(dispose, struct nfsd_cacherep, c_lru); + list_del(&rp->c_lru); + nfsd_cacherep_free(rp); + freed++; } + return freed; +} + +static void +nfsd_cacherep_unlink_locked(struct nfsd_net *nn, struct nfsd_drc_bucket *b, + struct nfsd_cacherep *rp) +{ + if (rp->c_type == RC_REPLBUFF && rp->c_replvec.iov_base) + nfsd_stats_drc_mem_usage_sub(nn, rp->c_replvec.iov_len); if (rp->c_state != RC_UNUSED) { rb_erase(&rp->c_node, &b->rb_head); list_del(&rp->c_lru); atomic_dec(&nn->num_drc_entries); nfsd_stats_drc_mem_usage_sub(nn, sizeof(*rp)); } - kmem_cache_free(drc_slab, rp); } static void -nfsd_reply_cache_free(struct nfsd_drc_bucket *b, struct svc_cacherep *rp, +nfsd_reply_cache_free_locked(struct nfsd_drc_bucket *b, struct nfsd_cacherep *rp, + struct nfsd_net *nn) +{ + nfsd_cacherep_unlink_locked(nn, b, rp); + nfsd_cacherep_free(rp); +} + +static void +nfsd_reply_cache_free(struct nfsd_drc_bucket *b, struct nfsd_cacherep *rp, struct nfsd_net *nn) { spin_lock(&b->cache_lock); - nfsd_reply_cache_free_locked(b, rp, nn); + nfsd_cacherep_unlink_locked(nn, b, rp); spin_unlock(&b->cache_lock); + nfsd_cacherep_free(rp); } int nfsd_drc_slab_create(void) { drc_slab = kmem_cache_create("nfsd_drc", - sizeof(struct svc_cacherep), 0, 0, NULL); + sizeof(struct nfsd_cacherep), 0, 0, NULL); return drc_slab ? 0: -ENOMEM; } @@ -208,7 +236,7 @@ out_shrinker: void nfsd_reply_cache_shutdown(struct nfsd_net *nn) { - struct svc_cacherep *rp; + struct nfsd_cacherep *rp; unsigned int i; unregister_shrinker(&nn->nfsd_reply_cache_shrinker); @@ -216,7 +244,7 @@ void nfsd_reply_cache_shutdown(struct nfsd_net *nn) for (i = 0; i < nn->drc_hashsize; i++) { struct list_head *head = &nn->drc_hashtbl[i].lru_head; while (!list_empty(head)) { - rp = list_first_entry(head, struct svc_cacherep, c_lru); + rp = list_first_entry(head, struct nfsd_cacherep, c_lru); nfsd_reply_cache_free_locked(&nn->drc_hashtbl[i], rp, nn); } @@ -233,7 +261,7 @@ void nfsd_reply_cache_shutdown(struct nfsd_net *nn) * not already scheduled. */ static void -lru_put_end(struct nfsd_drc_bucket *b, struct svc_cacherep *rp) +lru_put_end(struct nfsd_drc_bucket *b, struct nfsd_cacherep *rp) { rp->c_timestamp = jiffies; list_move_tail(&rp->c_lru, &b->lru_head); @@ -247,12 +275,21 @@ nfsd_cache_bucket_find(__be32 xid, struct nfsd_net *nn) return &nn->drc_hashtbl[hash]; } -static long prune_bucket(struct nfsd_drc_bucket *b, struct nfsd_net *nn, - unsigned int max) +/* + * Remove and return no more than @max expired entries in bucket @b. + * If @max is zero, do not limit the number of removed entries. + */ +static void +nfsd_prune_bucket_locked(struct nfsd_net *nn, struct nfsd_drc_bucket *b, + unsigned int max, struct list_head *dispose) { - struct svc_cacherep *rp, *tmp; - long freed = 0; + unsigned long expiry = jiffies - RC_EXPIRE; + struct nfsd_cacherep *rp, *tmp; + unsigned int freed = 0; + + lockdep_assert_held(&b->cache_lock); + /* The bucket LRU is ordered oldest-first. */ list_for_each_entry_safe(rp, tmp, &b->lru_head, c_lru) { /* * Don't free entries attached to calls that are still @@ -260,60 +297,77 @@ static long prune_bucket(struct nfsd_drc_bucket *b, struct nfsd_net *nn, */ if (rp->c_state == RC_INPROG) continue; + if (atomic_read(&nn->num_drc_entries) <= nn->max_drc_entries && - time_before(jiffies, rp->c_timestamp + RC_EXPIRE)) + time_before(expiry, rp->c_timestamp)) break; - nfsd_reply_cache_free_locked(b, rp, nn); - if (max && freed++ > max) + + nfsd_cacherep_unlink_locked(nn, b, rp); + list_add(&rp->c_lru, dispose); + + if (max && ++freed > max) break; } - return freed; } -static long nfsd_prune_bucket(struct nfsd_drc_bucket *b, struct nfsd_net *nn) +/** + * nfsd_reply_cache_count - count_objects method for the DRC shrinker + * @shrink: our registered shrinker context + * @sc: garbage collection parameters + * + * Returns the total number of entries in the duplicate reply cache. To + * keep things simple and quick, this is not the number of expired entries + * in the cache (ie, the number that would be removed by a call to + * nfsd_reply_cache_scan). + */ +static unsigned long +nfsd_reply_cache_count(struct shrinker *shrink, struct shrink_control *sc) { - return prune_bucket(b, nn, 3); + struct nfsd_net *nn = container_of(shrink, + struct nfsd_net, nfsd_reply_cache_shrinker); + + return atomic_read(&nn->num_drc_entries); } -/* - * Walk the LRU list and prune off entries that are older than RC_EXPIRE. - * Also prune the oldest ones when the total exceeds the max number of entries. +/** + * nfsd_reply_cache_scan - scan_objects method for the DRC shrinker + * @shrink: our registered shrinker context + * @sc: garbage collection parameters + * + * Free expired entries on each bucket's LRU list until we've released + * nr_to_scan freed objects. Nothing will be released if the cache + * has not exceeded it's max_drc_entries limit. + * + * Returns the number of entries released by this call. */ -static long -prune_cache_entries(struct nfsd_net *nn) +static unsigned long +nfsd_reply_cache_scan(struct shrinker *shrink, struct shrink_control *sc) { + struct nfsd_net *nn = container_of(shrink, + struct nfsd_net, nfsd_reply_cache_shrinker); + unsigned long freed = 0; + LIST_HEAD(dispose); unsigned int i; - long freed = 0; for (i = 0; i < nn->drc_hashsize; i++) { struct nfsd_drc_bucket *b = &nn->drc_hashtbl[i]; if (list_empty(&b->lru_head)) continue; + spin_lock(&b->cache_lock); - freed += prune_bucket(b, nn, 0); + nfsd_prune_bucket_locked(nn, b, 0, &dispose); spin_unlock(&b->cache_lock); - } - return freed; -} -static unsigned long -nfsd_reply_cache_count(struct shrinker *shrink, struct shrink_control *sc) -{ - struct nfsd_net *nn = container_of(shrink, - struct nfsd_net, nfsd_reply_cache_shrinker); + freed += nfsd_cacherep_dispose(&dispose); + if (freed > sc->nr_to_scan) + break; + } - return atomic_read(&nn->num_drc_entries); + trace_nfsd_drc_gc(nn, freed); + return freed; } -static unsigned long -nfsd_reply_cache_scan(struct shrinker *shrink, struct shrink_control *sc) -{ - struct nfsd_net *nn = container_of(shrink, - struct nfsd_net, nfsd_reply_cache_shrinker); - - return prune_cache_entries(nn); -} /* * Walk an xdr_buf and get a CRC for at most the first RC_CSUMLEN bytes */ @@ -348,8 +402,8 @@ nfsd_cache_csum(struct svc_rqst *rqstp) } static int -nfsd_cache_key_cmp(const struct svc_cacherep *key, - const struct svc_cacherep *rp, struct nfsd_net *nn) +nfsd_cache_key_cmp(const struct nfsd_cacherep *key, + const struct nfsd_cacherep *rp, struct nfsd_net *nn) { if (key->c_key.k_xid == rp->c_key.k_xid && key->c_key.k_csum != rp->c_key.k_csum) { @@ -365,11 +419,11 @@ nfsd_cache_key_cmp(const struct svc_cacherep *key, * Must be called with cache_lock held. Returns the found entry or * inserts an empty key on failure. */ -static struct svc_cacherep * -nfsd_cache_insert(struct nfsd_drc_bucket *b, struct svc_cacherep *key, +static struct nfsd_cacherep * +nfsd_cache_insert(struct nfsd_drc_bucket *b, struct nfsd_cacherep *key, struct nfsd_net *nn) { - struct svc_cacherep *rp, *ret = key; + struct nfsd_cacherep *rp, *ret = key; struct rb_node **p = &b->rb_head.rb_node, *parent = NULL; unsigned int entries = 0; @@ -378,7 +432,7 @@ nfsd_cache_insert(struct nfsd_drc_bucket *b, struct svc_cacherep *key, while (*p != NULL) { ++entries; parent = *p; - rp = rb_entry(parent, struct svc_cacherep, c_node); + rp = rb_entry(parent, struct nfsd_cacherep, c_node); cmp = nfsd_cache_key_cmp(key, rp, nn); if (cmp < 0) @@ -411,6 +465,7 @@ out: /** * nfsd_cache_lookup - Find an entry in the duplicate reply cache * @rqstp: Incoming Call to find + * @cacherep: OUT: DRC entry for this request * * Try to find an entry matching the current call in the cache. When none * is found, we try to grab the oldest expired entry off the LRU list. If @@ -423,16 +478,17 @@ out: * %RC_REPLY: Reply from cache * %RC_DROPIT: Do not process the request further */ -int nfsd_cache_lookup(struct svc_rqst *rqstp) +int nfsd_cache_lookup(struct svc_rqst *rqstp, struct nfsd_cacherep **cacherep) { struct nfsd_net *nn; - struct svc_cacherep *rp, *found; + struct nfsd_cacherep *rp, *found; __wsum csum; struct nfsd_drc_bucket *b; int type = rqstp->rq_cachetype; + unsigned long freed; + LIST_HEAD(dispose); int rtn = RC_DOIT; - rqstp->rq_cacherep = NULL; if (type == RC_NOCACHE) { nfsd_stats_rc_nocache_inc(); goto out; @@ -445,7 +501,7 @@ int nfsd_cache_lookup(struct svc_rqst *rqstp) * preallocate an entry. */ nn = net_generic(SVC_NET(rqstp), nfsd_net_id); - rp = nfsd_reply_cache_alloc(rqstp, csum, nn); + rp = nfsd_cacherep_alloc(rqstp, csum, nn); if (!rp) goto out; @@ -454,20 +510,18 @@ int nfsd_cache_lookup(struct svc_rqst *rqstp) found = nfsd_cache_insert(b, rp, nn); if (found != rp) goto found_entry; - - nfsd_stats_rc_misses_inc(); - rqstp->rq_cacherep = rp; + *cacherep = rp; rp->c_state = RC_INPROG; + nfsd_prune_bucket_locked(nn, b, 3, &dispose); + spin_unlock(&b->cache_lock); + freed = nfsd_cacherep_dispose(&dispose); + trace_nfsd_drc_gc(nn, freed); + + nfsd_stats_rc_misses_inc(); atomic_inc(&nn->num_drc_entries); nfsd_stats_drc_mem_usage_add(nn, sizeof(*rp)); - - nfsd_prune_bucket(b, nn); - -out_unlock: - spin_unlock(&b->cache_lock); -out: - return rtn; + goto out; found_entry: /* We found a matching entry which is either in progress or done. */ @@ -505,12 +559,16 @@ found_entry: out_trace: trace_nfsd_drc_found(nn, rqstp, rtn); - goto out_unlock; +out_unlock: + spin_unlock(&b->cache_lock); +out: + return rtn; } /** * nfsd_cache_update - Update an entry in the duplicate reply cache. * @rqstp: svc_rqst with a finished Reply + * @rp: IN: DRC entry for this request * @cachetype: which cache to update * @statp: pointer to Reply's NFS status code, or NULL * @@ -528,10 +586,10 @@ out_trace: * nfsd failed to encode a reply that otherwise would have been cached. * In this case, nfsd_cache_update is called with statp == NULL. */ -void nfsd_cache_update(struct svc_rqst *rqstp, int cachetype, __be32 *statp) +void nfsd_cache_update(struct svc_rqst *rqstp, struct nfsd_cacherep *rp, + int cachetype, __be32 *statp) { struct nfsd_net *nn = net_generic(SVC_NET(rqstp), nfsd_net_id); - struct svc_cacherep *rp = rqstp->rq_cacherep; struct kvec *resv = &rqstp->rq_res.head[0], *cachv; struct nfsd_drc_bucket *b; int len; diff --git a/fs/nfsd/nfsctl.c b/fs/nfsd/nfsctl.c index 1b8b1aab9a15..7ed02fb88a36 100644 --- a/fs/nfsd/nfsctl.c +++ b/fs/nfsd/nfsctl.c @@ -1105,6 +1105,7 @@ static ssize_t write_v4_end_grace(struct file *file, char *buf, size_t size) if (!nn->nfsd_serv) return -EBUSY; trace_nfsd_end_grace(netns(file)); + nfsd4_end_grace(nn); break; default: return -EINVAL; @@ -1131,7 +1132,7 @@ static struct inode *nfsd_get_inode(struct super_block *sb, umode_t mode) /* Following advice from simple_fill_super documentation: */ inode->i_ino = iunique(sb, NFSD_MaxReserved); inode->i_mode = mode; - inode->i_atime = inode->i_mtime = inode->i_ctime = current_time(inode); + inode->i_atime = inode->i_mtime = inode_set_ctime_current(inode); switch (mode & S_IFMT) { case S_IFDIR: inode->i_fop = &simple_dir_operations; @@ -1626,6 +1627,7 @@ static void __exit exit_nfsd(void) } MODULE_AUTHOR("Olaf Kirch <okir@monad.swb.de>"); +MODULE_DESCRIPTION("In-kernel NFS server"); MODULE_LICENSE("GPL"); module_init(init_nfsd) module_exit(exit_nfsd) diff --git a/fs/nfsd/nfsd.h b/fs/nfsd/nfsd.h index d88498f8b275..11c14faa6c67 100644 --- a/fs/nfsd/nfsd.h +++ b/fs/nfsd/nfsd.h @@ -96,7 +96,12 @@ int nfsd_pool_stats_open(struct inode *, struct file *); int nfsd_pool_stats_release(struct inode *, struct file *); void nfsd_shutdown_threads(struct net *net); -void nfsd_put(struct net *net); +static inline void nfsd_put(struct net *net) +{ + struct nfsd_net *nn = net_generic(net, nfsd_net_id); + + svc_put(nn->nfsd_serv); +} bool i_am_nfsd(void); diff --git a/fs/nfsd/nfsfh.c b/fs/nfsd/nfsfh.c index c291389a1d71..355bf0db3235 100644 --- a/fs/nfsd/nfsfh.c +++ b/fs/nfsd/nfsfh.c @@ -614,7 +614,7 @@ out_negative: * @fhp: file handle to be updated * */ -void fh_fill_pre_attrs(struct svc_fh *fhp) +__be32 __must_check fh_fill_pre_attrs(struct svc_fh *fhp) { bool v4 = (fhp->fh_maxsize == NFS4_FHSIZE); struct inode *inode; @@ -622,12 +622,12 @@ void fh_fill_pre_attrs(struct svc_fh *fhp) __be32 err; if (fhp->fh_no_wcc || fhp->fh_pre_saved) - return; + return nfs_ok; inode = d_inode(fhp->fh_dentry); err = fh_getattr(fhp, &stat); if (err) - return; + return err; if (v4) fhp->fh_pre_change = nfsd4_change_attribute(&stat, inode); @@ -636,6 +636,7 @@ void fh_fill_pre_attrs(struct svc_fh *fhp) fhp->fh_pre_ctime = stat.ctime; fhp->fh_pre_size = stat.size; fhp->fh_pre_saved = true; + return nfs_ok; } /** @@ -643,26 +644,27 @@ void fh_fill_pre_attrs(struct svc_fh *fhp) * @fhp: file handle to be updated * */ -void fh_fill_post_attrs(struct svc_fh *fhp) +__be32 fh_fill_post_attrs(struct svc_fh *fhp) { bool v4 = (fhp->fh_maxsize == NFS4_FHSIZE); struct inode *inode = d_inode(fhp->fh_dentry); __be32 err; if (fhp->fh_no_wcc) - return; + return nfs_ok; if (fhp->fh_post_saved) printk("nfsd: inode locked twice during operation.\n"); err = fh_getattr(fhp, &fhp->fh_post_attr); if (err) - return; + return err; fhp->fh_post_saved = true; if (v4) fhp->fh_post_change = nfsd4_change_attribute(&fhp->fh_post_attr, inode); + return nfs_ok; } /** @@ -672,16 +674,20 @@ void fh_fill_post_attrs(struct svc_fh *fhp) * This is used when the directory wasn't changed, but wcc attributes * are needed anyway. */ -void fh_fill_both_attrs(struct svc_fh *fhp) +__be32 __must_check fh_fill_both_attrs(struct svc_fh *fhp) { - fh_fill_post_attrs(fhp); - if (!fhp->fh_post_saved) - return; + __be32 err; + + err = fh_fill_post_attrs(fhp); + if (err) + return err; + fhp->fh_pre_change = fhp->fh_post_change; fhp->fh_pre_mtime = fhp->fh_post_attr.mtime; fhp->fh_pre_ctime = fhp->fh_post_attr.ctime; fhp->fh_pre_size = fhp->fh_post_attr.size; fhp->fh_pre_saved = true; + return nfs_ok; } /* diff --git a/fs/nfsd/nfsfh.h b/fs/nfsd/nfsfh.h index 4e0ecf0ae2cf..40426f899e76 100644 --- a/fs/nfsd/nfsfh.h +++ b/fs/nfsd/nfsfh.h @@ -294,7 +294,7 @@ static inline void fh_clear_pre_post_attrs(struct svc_fh *fhp) } u64 nfsd4_change_attribute(struct kstat *stat, struct inode *inode); -extern void fh_fill_pre_attrs(struct svc_fh *fhp); -extern void fh_fill_post_attrs(struct svc_fh *fhp); -extern void fh_fill_both_attrs(struct svc_fh *fhp); +__be32 __must_check fh_fill_pre_attrs(struct svc_fh *fhp); +__be32 fh_fill_post_attrs(struct svc_fh *fhp); +__be32 __must_check fh_fill_both_attrs(struct svc_fh *fhp); #endif /* _LINUX_NFSD_NFSFH_H */ diff --git a/fs/nfsd/nfssvc.c b/fs/nfsd/nfssvc.c index 2154fa63c5f2..1582af33e204 100644 --- a/fs/nfsd/nfssvc.c +++ b/fs/nfsd/nfssvc.c @@ -542,9 +542,14 @@ static struct notifier_block nfsd_inet6addr_notifier = { /* Only used under nfsd_mutex, so this atomic may be overkill: */ static atomic_t nfsd_notifier_refcount = ATOMIC_INIT(0); -static void nfsd_last_thread(struct svc_serv *serv, struct net *net) +static void nfsd_last_thread(struct net *net) { struct nfsd_net *nn = net_generic(net, nfsd_net_id); + struct svc_serv *serv = nn->nfsd_serv; + + spin_lock(&nfsd_notifier_lock); + nn->nfsd_serv = NULL; + spin_unlock(&nfsd_notifier_lock); /* check if the notifier still has clients */ if (atomic_dec_return(&nfsd_notifier_refcount) == 0) { @@ -554,6 +559,8 @@ static void nfsd_last_thread(struct svc_serv *serv, struct net *net) #endif } + svc_xprt_destroy_all(serv, net); + /* * write_ports can create the server without actually starting * any threads--if we get shut down before any threads are @@ -644,7 +651,8 @@ void nfsd_shutdown_threads(struct net *net) svc_get(serv); /* Kill outstanding nfsd threads */ svc_set_num_threads(serv, NULL, 0); - nfsd_put(net); + nfsd_last_thread(net); + svc_put(serv); mutex_unlock(&nfsd_mutex); } @@ -674,9 +682,6 @@ int nfsd_create_serv(struct net *net) serv->sv_maxconn = nn->max_connections; error = svc_bind(serv, net); if (error < 0) { - /* NOT nfsd_put() as notifiers (see below) haven't - * been set up yet. - */ svc_put(serv); return error; } @@ -719,29 +724,6 @@ int nfsd_get_nrthreads(int n, int *nthreads, struct net *net) return 0; } -/* This is the callback for kref_put() below. - * There is no code here as the first thing to be done is - * call svc_shutdown_net(), but we cannot get the 'net' from - * the kref. So do all the work when kref_put returns true. - */ -static void nfsd_noop(struct kref *ref) -{ -} - -void nfsd_put(struct net *net) -{ - struct nfsd_net *nn = net_generic(net, nfsd_net_id); - - if (kref_put(&nn->nfsd_serv->sv_refcnt, nfsd_noop)) { - svc_xprt_destroy_all(nn->nfsd_serv, net); - nfsd_last_thread(nn->nfsd_serv, net); - svc_destroy(&nn->nfsd_serv->sv_refcnt); - spin_lock(&nfsd_notifier_lock); - nn->nfsd_serv = NULL; - spin_unlock(&nfsd_notifier_lock); - } -} - int nfsd_set_nrthreads(int n, int *nthreads, struct net *net) { int i = 0; @@ -792,7 +774,7 @@ int nfsd_set_nrthreads(int n, int *nthreads, struct net *net) if (err) break; } - nfsd_put(net); + svc_put(nn->nfsd_serv); return err; } @@ -807,6 +789,7 @@ nfsd_svc(int nrservs, struct net *net, const struct cred *cred) int error; bool nfsd_up_before; struct nfsd_net *nn = net_generic(net, nfsd_net_id); + struct svc_serv *serv; mutex_lock(&nfsd_mutex); dprintk("nfsd: creating service\n"); @@ -826,22 +809,25 @@ nfsd_svc(int nrservs, struct net *net, const struct cred *cred) goto out; nfsd_up_before = nn->nfsd_net_up; + serv = nn->nfsd_serv; error = nfsd_startup_net(net, cred); if (error) goto out_put; - error = svc_set_num_threads(nn->nfsd_serv, NULL, nrservs); + error = svc_set_num_threads(serv, NULL, nrservs); if (error) goto out_shutdown; - error = nn->nfsd_serv->sv_nrthreads; + error = serv->sv_nrthreads; + if (error == 0) + nfsd_last_thread(net); out_shutdown: if (error < 0 && !nfsd_up_before) nfsd_shutdown_net(net); out_put: /* Threads now hold service active */ if (xchg(&nn->keep_active, 0)) - nfsd_put(net); - nfsd_put(net); + svc_put(serv); + svc_put(serv); out: mutex_unlock(&nfsd_mutex); return error; @@ -953,7 +939,6 @@ nfsd(void *vrqstp) struct svc_xprt *perm_sock = list_entry(rqstp->rq_server->sv_permsocks.next, typeof(struct svc_xprt), xpt_list); struct net *net = perm_sock->xpt_net; struct nfsd_net *nn = net_generic(net, nfsd_net_id); - int err; /* At this point, the thread shares current->fs * with the init process. We need to create files with the @@ -965,15 +950,6 @@ nfsd(void *vrqstp) current->fs->umask = 0; - /* - * thread is spawned with all signals set to SIG_IGN, re-enable - * the ones that will bring down the thread - */ - allow_signal(SIGKILL); - allow_signal(SIGHUP); - allow_signal(SIGINT); - allow_signal(SIGQUIT); - atomic_inc(&nfsdstats.th_cnt); set_freezable(); @@ -981,54 +957,19 @@ nfsd(void *vrqstp) /* * The main request loop */ - for (;;) { + while (!kthread_should_stop()) { /* Update sv_maxconn if it has changed */ rqstp->rq_server->sv_maxconn = nn->max_connections; - /* - * Find a socket with data available and call its - * recvfrom routine. - */ - while ((err = svc_recv(rqstp, 60*60*HZ)) == -EAGAIN) - ; - if (err == -EINTR) - break; - validate_process_creds(); - svc_process(rqstp); + svc_recv(rqstp); validate_process_creds(); } - /* Clear signals before calling svc_exit_thread() */ - flush_signals(current); - atomic_dec(&nfsdstats.th_cnt); out: - /* Take an extra ref so that the svc_put in svc_exit_thread() - * doesn't call svc_destroy() - */ - svc_get(nn->nfsd_serv); - /* Release the thread */ svc_exit_thread(rqstp); - - /* We need to drop a ref, but may not drop the last reference - * without holding nfsd_mutex, and we cannot wait for nfsd_mutex as that - * could deadlock with nfsd_shutdown_threads() waiting for us. - * So three options are: - * - drop a non-final reference, - * - get the mutex without waiting - * - sleep briefly andd try the above again - */ - while (!svc_put_not_last(nn->nfsd_serv)) { - if (mutex_trylock(&nfsd_mutex)) { - nfsd_put(net); - mutex_unlock(&nfsd_mutex); - break; - } - msleep(20); - } - return 0; } @@ -1046,6 +987,7 @@ int nfsd_dispatch(struct svc_rqst *rqstp) { const struct svc_procedure *proc = rqstp->rq_procinfo; __be32 *statp = rqstp->rq_accept_statp; + struct nfsd_cacherep *rp; /* * Give the xdr decoder a chance to change this if it wants @@ -1056,7 +998,8 @@ int nfsd_dispatch(struct svc_rqst *rqstp) if (!proc->pc_decode(rqstp, &rqstp->rq_arg_stream)) goto out_decode_err; - switch (nfsd_cache_lookup(rqstp)) { + rp = NULL; + switch (nfsd_cache_lookup(rqstp, &rp)) { case RC_DOIT: break; case RC_REPLY: @@ -1072,7 +1015,7 @@ int nfsd_dispatch(struct svc_rqst *rqstp) if (!proc->pc_encode(rqstp, &rqstp->rq_res_stream)) goto out_encode_err; - nfsd_cache_update(rqstp, rqstp->rq_cachetype, statp + 1); + nfsd_cache_update(rqstp, rp, rqstp->rq_cachetype, statp + 1); out_cached_reply: return 1; @@ -1082,13 +1025,13 @@ out_decode_err: return 1; out_update_drop: - nfsd_cache_update(rqstp, RC_NOCACHE, NULL); + nfsd_cache_update(rqstp, rp, RC_NOCACHE, NULL); out_dropit: return 0; out_encode_err: trace_nfsd_cant_encode_err(rqstp); - nfsd_cache_update(rqstp, RC_NOCACHE, NULL); + nfsd_cache_update(rqstp, rp, RC_NOCACHE, NULL); *statp = rpc_system_err; return 1; } diff --git a/fs/nfsd/state.h b/fs/nfsd/state.h index d49d3060ed4f..cbddcf484dba 100644 --- a/fs/nfsd/state.h +++ b/fs/nfsd/state.h @@ -732,4 +732,7 @@ static inline bool try_to_expire_client(struct nfs4_client *clp) cmpxchg(&clp->cl_state, NFSD4_COURTESY, NFSD4_EXPIRABLE); return clp->cl_state == NFSD4_EXPIRABLE; } + +extern __be32 nfsd4_deleg_getattr_conflict(struct svc_rqst *rqstp, + struct inode *inode); #endif /* NFSD4_STATE_H */ diff --git a/fs/nfsd/stats.c b/fs/nfsd/stats.c index 777e24e5da33..63797635e1c3 100644 --- a/fs/nfsd/stats.c +++ b/fs/nfsd/stats.c @@ -65,6 +65,8 @@ static int nfsd_show(struct seq_file *seq, void *v) seq_printf(seq, " %lld", percpu_counter_sum_positive(&nfsdstats.counter[NFSD_STATS_NFS4_OP(i)])); } + seq_printf(seq, "\nwdeleg_getattr %lld", + percpu_counter_sum_positive(&nfsdstats.counter[NFSD_STATS_WDELEG_GETATTR])); seq_putc(seq, '\n'); #endif diff --git a/fs/nfsd/stats.h b/fs/nfsd/stats.h index 9b43dc3d9991..cf5524e7ca06 100644 --- a/fs/nfsd/stats.h +++ b/fs/nfsd/stats.h @@ -22,6 +22,7 @@ enum { NFSD_STATS_FIRST_NFS4_OP, /* count of individual nfsv4 operations */ NFSD_STATS_LAST_NFS4_OP = NFSD_STATS_FIRST_NFS4_OP + LAST_NFS4_OP, #define NFSD_STATS_NFS4_OP(op) (NFSD_STATS_FIRST_NFS4_OP + (op)) + NFSD_STATS_WDELEG_GETATTR, /* count of getattr conflict with wdeleg */ #endif NFSD_STATS_COUNTERS_NUM }; @@ -93,4 +94,10 @@ static inline void nfsd_stats_drc_mem_usage_sub(struct nfsd_net *nn, s64 amount) percpu_counter_sub(&nn->counter[NFSD_NET_DRC_MEM_USAGE], amount); } +#ifdef CONFIG_NFSD_V4 +static inline void nfsd_stats_wdeleg_getattr_inc(void) +{ + percpu_counter_inc(&nfsdstats.counter[NFSD_STATS_WDELEG_GETATTR]); +} +#endif #endif /* _NFSD_STATS_H */ diff --git a/fs/nfsd/trace.h b/fs/nfsd/trace.h index 2af74983f146..803904348871 100644 --- a/fs/nfsd/trace.h +++ b/fs/nfsd/trace.h @@ -607,6 +607,7 @@ DEFINE_STATEID_EVENT(layout_recall_release); DEFINE_STATEID_EVENT(open); DEFINE_STATEID_EVENT(deleg_read); +DEFINE_STATEID_EVENT(deleg_write); DEFINE_STATEID_EVENT(deleg_return); DEFINE_STATEID_EVENT(deleg_recall); @@ -1240,8 +1241,8 @@ TRACE_EVENT(nfsd_drc_found, TRACE_EVENT(nfsd_drc_mismatch, TP_PROTO( const struct nfsd_net *nn, - const struct svc_cacherep *key, - const struct svc_cacherep *rp + const struct nfsd_cacherep *key, + const struct nfsd_cacherep *rp ), TP_ARGS(nn, key, rp), TP_STRUCT__entry( @@ -1261,6 +1262,28 @@ TRACE_EVENT(nfsd_drc_mismatch, __entry->ingress) ); +TRACE_EVENT_CONDITION(nfsd_drc_gc, + TP_PROTO( + const struct nfsd_net *nn, + unsigned long freed + ), + TP_ARGS(nn, freed), + TP_CONDITION(freed > 0), + TP_STRUCT__entry( + __field(unsigned long long, boot_time) + __field(unsigned long, freed) + __field(int, total) + ), + TP_fast_assign( + __entry->boot_time = nn->boot_time; + __entry->freed = freed; + __entry->total = atomic_read(&nn->num_drc_entries); + ), + TP_printk("boot_time=%16llx total=%d freed=%lu", + __entry->boot_time, __entry->total, __entry->freed + ) +); + TRACE_EVENT(nfsd_cb_args, TP_PROTO( const struct nfs4_client *clp, diff --git a/fs/nfsd/vfs.c b/fs/nfsd/vfs.c index 8a2321d19194..48260cf68fde 100644 --- a/fs/nfsd/vfs.c +++ b/fs/nfsd/vfs.c @@ -520,7 +520,7 @@ nfsd_setattr(struct svc_rqst *rqstp, struct svc_fh *fhp, nfsd_sanitize_attrs(inode, iap); - if (check_guard && guardtime != inode->i_ctime.tv_sec) + if (check_guard && guardtime != inode_get_ctime(inode).tv_sec) return nfserr_notsync; /* @@ -956,10 +956,13 @@ nfsd_splice_actor(struct pipe_inode_info *pipe, struct pipe_buffer *buf, last_page = page + (offset + sd->len - 1) / PAGE_SIZE; for (page += offset / PAGE_SIZE; page <= last_page; page++) { /* - * Skip page replacement when extending the contents - * of the current page. + * Skip page replacement when extending the contents of the + * current page. But note that we may get two zero_pages in a + * row from shmem. */ - if (page == *(rqstp->rq_next_page - 1)) + if (page == *(rqstp->rq_next_page - 1) && + offset_in_page(rqstp->rq_res.page_base + + rqstp->rq_res.page_len)) continue; if (unlikely(!svc_rqst_replace_page(rqstp, page))) return -EIO; @@ -1537,7 +1540,9 @@ nfsd_create(struct svc_rqst *rqstp, struct svc_fh *fhp, dput(dchild); if (err) goto out_unlock; - fh_fill_pre_attrs(fhp); + err = fh_fill_pre_attrs(fhp); + if (err != nfs_ok) + goto out_unlock; err = nfsd_create_locked(rqstp, fhp, attrs, type, rdev, resfhp); fh_fill_post_attrs(fhp); out_unlock: @@ -1632,13 +1637,16 @@ nfsd_symlink(struct svc_rqst *rqstp, struct svc_fh *fhp, inode_unlock(dentry->d_inode); goto out_drop_write; } - fh_fill_pre_attrs(fhp); + err = fh_fill_pre_attrs(fhp); + if (err != nfs_ok) + goto out_unlock; host_err = vfs_symlink(&nop_mnt_idmap, d_inode(dentry), dnew, path); err = nfserrno(host_err); cerr = fh_compose(resfhp, fhp->fh_export, dnew, fhp); if (!err) nfsd_create_setattr(rqstp, fhp, resfhp, attrs); fh_fill_post_attrs(fhp); +out_unlock: inode_unlock(dentry->d_inode); if (!err) err = nfserrno(commit_metadata(fhp)); @@ -1700,7 +1708,9 @@ nfsd_link(struct svc_rqst *rqstp, struct svc_fh *ffhp, err = nfserr_noent; if (d_really_is_negative(dold)) goto out_dput; - fh_fill_pre_attrs(ffhp); + err = fh_fill_pre_attrs(ffhp); + if (err != nfs_ok) + goto out_dput; host_err = vfs_link(dold, &nop_mnt_idmap, dirp, dnew, NULL); fh_fill_post_attrs(ffhp); inode_unlock(dirp); @@ -1786,8 +1796,12 @@ retry: } trap = lock_rename(tdentry, fdentry); - fh_fill_pre_attrs(ffhp); - fh_fill_pre_attrs(tfhp); + err = fh_fill_pre_attrs(ffhp); + if (err != nfs_ok) + goto out_unlock; + err = fh_fill_pre_attrs(tfhp); + if (err != nfs_ok) + goto out_unlock; odentry = lookup_one_len(fname, fdentry, flen); host_err = PTR_ERR(odentry); @@ -1854,6 +1868,7 @@ retry: fh_fill_post_attrs(ffhp); fh_fill_post_attrs(tfhp); } +out_unlock: unlock_rename(tdentry, fdentry); fh_drop_write(ffhp); @@ -1913,12 +1928,14 @@ nfsd_unlink(struct svc_rqst *rqstp, struct svc_fh *fhp, int type, goto out_unlock; } rinode = d_inode(rdentry); - ihold(rinode); + err = fh_fill_pre_attrs(fhp); + if (err != nfs_ok) + goto out_unlock; + ihold(rinode); if (!type) type = d_inode(rdentry)->i_mode & S_IFMT; - fh_fill_pre_attrs(fhp); if (type != S_IFDIR) { int retries; @@ -2338,16 +2355,18 @@ nfsd_removexattr(struct svc_rqst *rqstp, struct svc_fh *fhp, char *name) return nfserrno(ret); inode_lock(fhp->fh_dentry->d_inode); - fh_fill_pre_attrs(fhp); - + err = fh_fill_pre_attrs(fhp); + if (err != nfs_ok) + goto out_unlock; ret = __vfs_removexattr_locked(&nop_mnt_idmap, fhp->fh_dentry, name, NULL); - + err = nfsd_xattr_errno(ret); fh_fill_post_attrs(fhp); +out_unlock: inode_unlock(fhp->fh_dentry->d_inode); fh_drop_write(fhp); - return nfsd_xattr_errno(ret); + return err; } __be32 @@ -2365,15 +2384,17 @@ nfsd_setxattr(struct svc_rqst *rqstp, struct svc_fh *fhp, char *name, if (ret) return nfserrno(ret); inode_lock(fhp->fh_dentry->d_inode); - fh_fill_pre_attrs(fhp); - - ret = __vfs_setxattr_locked(&nop_mnt_idmap, fhp->fh_dentry, name, buf, - len, flags, NULL); + err = fh_fill_pre_attrs(fhp); + if (err != nfs_ok) + goto out_unlock; + ret = __vfs_setxattr_locked(&nop_mnt_idmap, fhp->fh_dentry, + name, buf, len, flags, NULL); fh_fill_post_attrs(fhp); + err = nfsd_xattr_errno(ret); +out_unlock: inode_unlock(fhp->fh_dentry->d_inode); fh_drop_write(fhp); - - return nfsd_xattr_errno(ret); + return err; } #endif diff --git a/fs/nfsd/xdr4.h b/fs/nfsd/xdr4.h index 510978e602da..9d918a79dc16 100644 --- a/fs/nfsd/xdr4.h +++ b/fs/nfsd/xdr4.h @@ -774,17 +774,6 @@ void warn_on_nonidempotent_op(struct nfsd4_op *op); #define NFS4_SVC_XDRSIZE sizeof(struct nfsd4_compoundargs) -static inline void -set_change_info(struct nfsd4_change_info *cinfo, struct svc_fh *fhp) -{ - BUG_ON(!fhp->fh_pre_saved); - cinfo->atomic = (u32)(fhp->fh_post_saved && !fhp->fh_no_atomic_attr); - - cinfo->before_change = fhp->fh_pre_change; - cinfo->after_change = fhp->fh_post_change; -} - - bool nfsd4_mach_creds_match(struct nfs4_client *cl, struct svc_rqst *rqstp); bool nfs4svc_decode_compoundargs(struct svc_rqst *rqstp, struct xdr_stream *xdr); bool nfs4svc_encode_compoundres(struct svc_rqst *rqstp, struct xdr_stream *xdr); diff --git a/fs/nilfs2/Kconfig b/fs/nilfs2/Kconfig index 7d59567465e1..7dae168e346e 100644 --- a/fs/nilfs2/Kconfig +++ b/fs/nilfs2/Kconfig @@ -1,6 +1,7 @@ # SPDX-License-Identifier: GPL-2.0-only config NILFS2_FS tristate "NILFS2 file system support" + select BUFFER_HEAD select CRC32 select LEGACY_DIRECT_IO help diff --git a/fs/nilfs2/alloc.c b/fs/nilfs2/alloc.c index 6ce8617b562d..7342de296ec3 100644 --- a/fs/nilfs2/alloc.c +++ b/fs/nilfs2/alloc.c @@ -205,7 +205,8 @@ static int nilfs_palloc_get_block(struct inode *inode, unsigned long blkoff, int ret; spin_lock(lock); - if (prev->bh && blkoff == prev->blkoff) { + if (prev->bh && blkoff == prev->blkoff && + likely(buffer_uptodate(prev->bh))) { get_bh(prev->bh); *bhp = prev->bh; spin_unlock(lock); diff --git a/fs/nilfs2/dir.c b/fs/nilfs2/dir.c index decd6471300b..bce734b68f08 100644 --- a/fs/nilfs2/dir.c +++ b/fs/nilfs2/dir.c @@ -429,7 +429,7 @@ void nilfs_set_link(struct inode *dir, struct nilfs_dir_entry *de, nilfs_set_de_type(de, inode); nilfs_commit_chunk(page, mapping, from, to); nilfs_put_page(page); - dir->i_mtime = dir->i_ctime = current_time(dir); + dir->i_mtime = inode_set_ctime_current(dir); } /* @@ -519,7 +519,7 @@ got_it: de->inode = cpu_to_le64(inode->i_ino); nilfs_set_de_type(de, inode); nilfs_commit_chunk(page, page->mapping, from, to); - dir->i_mtime = dir->i_ctime = current_time(dir); + dir->i_mtime = inode_set_ctime_current(dir); nilfs_mark_inode_dirty(dir); /* OFFSET_CACHE */ out_put: @@ -567,7 +567,7 @@ int nilfs_delete_entry(struct nilfs_dir_entry *dir, struct page *page) pde->rec_len = nilfs_rec_len_to_disk(to - from); dir->inode = 0; nilfs_commit_chunk(page, mapping, from, to); - inode->i_ctime = inode->i_mtime = current_time(inode); + inode->i_mtime = inode_set_ctime_current(inode); out: nilfs_put_page(page); return err; diff --git a/fs/nilfs2/file.c b/fs/nilfs2/file.c index a9eb3487efb2..740ce26d1e76 100644 --- a/fs/nilfs2/file.c +++ b/fs/nilfs2/file.c @@ -108,7 +108,7 @@ static vm_fault_t nilfs_page_mkwrite(struct vm_fault *vmf) wait_for_stable_page(page); out: sb_end_pagefault(inode->i_sb); - return block_page_mkwrite_return(ret); + return vmf_fs_error(ret); } static const struct vm_operations_struct nilfs_file_vm_ops = { diff --git a/fs/nilfs2/inode.c b/fs/nilfs2/inode.c index 35bc79305318..1a8bd5993476 100644 --- a/fs/nilfs2/inode.c +++ b/fs/nilfs2/inode.c @@ -366,7 +366,7 @@ struct inode *nilfs_new_inode(struct inode *dir, umode_t mode) atomic64_inc(&root->inodes_count); inode_init_owner(&nop_mnt_idmap, inode, dir, mode); inode->i_ino = ino; - inode->i_mtime = inode->i_atime = inode->i_ctime = current_time(inode); + inode->i_mtime = inode->i_atime = inode_set_ctime_current(inode); if (S_ISREG(mode) || S_ISDIR(mode) || S_ISLNK(mode)) { err = nilfs_bmap_read(ii->i_bmap, NULL); @@ -450,10 +450,10 @@ int nilfs_read_inode_common(struct inode *inode, set_nlink(inode, le16_to_cpu(raw_inode->i_links_count)); inode->i_size = le64_to_cpu(raw_inode->i_size); inode->i_atime.tv_sec = le64_to_cpu(raw_inode->i_mtime); - inode->i_ctime.tv_sec = le64_to_cpu(raw_inode->i_ctime); + inode_set_ctime(inode, le64_to_cpu(raw_inode->i_ctime), + le32_to_cpu(raw_inode->i_ctime_nsec)); inode->i_mtime.tv_sec = le64_to_cpu(raw_inode->i_mtime); inode->i_atime.tv_nsec = le32_to_cpu(raw_inode->i_mtime_nsec); - inode->i_ctime.tv_nsec = le32_to_cpu(raw_inode->i_ctime_nsec); inode->i_mtime.tv_nsec = le32_to_cpu(raw_inode->i_mtime_nsec); if (nilfs_is_metadata_file_inode(inode) && !S_ISREG(inode->i_mode)) return -EIO; /* this inode is for metadata and corrupted */ @@ -768,9 +768,9 @@ void nilfs_write_inode_common(struct inode *inode, raw_inode->i_gid = cpu_to_le32(i_gid_read(inode)); raw_inode->i_links_count = cpu_to_le16(inode->i_nlink); raw_inode->i_size = cpu_to_le64(inode->i_size); - raw_inode->i_ctime = cpu_to_le64(inode->i_ctime.tv_sec); + raw_inode->i_ctime = cpu_to_le64(inode_get_ctime(inode).tv_sec); raw_inode->i_mtime = cpu_to_le64(inode->i_mtime.tv_sec); - raw_inode->i_ctime_nsec = cpu_to_le32(inode->i_ctime.tv_nsec); + raw_inode->i_ctime_nsec = cpu_to_le32(inode_get_ctime(inode).tv_nsec); raw_inode->i_mtime_nsec = cpu_to_le32(inode->i_mtime.tv_nsec); raw_inode->i_blocks = cpu_to_le64(inode->i_blocks); @@ -875,7 +875,7 @@ void nilfs_truncate(struct inode *inode) nilfs_truncate_bmap(ii, blkoff); - inode->i_mtime = inode->i_ctime = current_time(inode); + inode->i_mtime = inode_set_ctime_current(inode); if (IS_SYNC(inode)) nilfs_set_transaction_flag(NILFS_TI_SYNC); @@ -1025,7 +1025,7 @@ int nilfs_load_inode_block(struct inode *inode, struct buffer_head **pbh) int err; spin_lock(&nilfs->ns_inode_lock); - if (ii->i_bh == NULL) { + if (ii->i_bh == NULL || unlikely(!buffer_uptodate(ii->i_bh))) { spin_unlock(&nilfs->ns_inode_lock); err = nilfs_ifile_get_inode_block(ii->i_root->ifile, inode->i_ino, pbh); @@ -1034,7 +1034,10 @@ int nilfs_load_inode_block(struct inode *inode, struct buffer_head **pbh) spin_lock(&nilfs->ns_inode_lock); if (ii->i_bh == NULL) ii->i_bh = *pbh; - else { + else if (unlikely(!buffer_uptodate(ii->i_bh))) { + __brelse(ii->i_bh); + ii->i_bh = *pbh; + } else { brelse(*pbh); *pbh = ii->i_bh; } diff --git a/fs/nilfs2/ioctl.c b/fs/nilfs2/ioctl.c index 1dfbc0c34513..40ffade49f38 100644 --- a/fs/nilfs2/ioctl.c +++ b/fs/nilfs2/ioctl.c @@ -149,7 +149,7 @@ int nilfs_fileattr_set(struct mnt_idmap *idmap, NILFS_I(inode)->i_flags = oldflags | (flags & FS_FL_USER_MODIFIABLE); nilfs_set_inode_flags(inode); - inode->i_ctime = current_time(inode); + inode_set_ctime_current(inode); if (IS_SYNC(inode)) nilfs_set_transaction_flag(NILFS_TI_SYNC); diff --git a/fs/nilfs2/namei.c b/fs/nilfs2/namei.c index c7024da8f1e2..2a4e7f4a8102 100644 --- a/fs/nilfs2/namei.c +++ b/fs/nilfs2/namei.c @@ -185,7 +185,7 @@ static int nilfs_link(struct dentry *old_dentry, struct inode *dir, if (err) return err; - inode->i_ctime = current_time(inode); + inode_set_ctime_current(inode); inode_inc_link_count(inode); ihold(inode); @@ -283,7 +283,7 @@ static int nilfs_do_unlink(struct inode *dir, struct dentry *dentry) if (err) goto out; - inode->i_ctime = dir->i_ctime; + inode_set_ctime_to_ts(inode, inode_get_ctime(dir)); drop_nlink(inode); err = 0; out: @@ -387,7 +387,7 @@ static int nilfs_rename(struct mnt_idmap *idmap, goto out_dir; nilfs_set_link(new_dir, new_de, new_page, old_inode); nilfs_mark_inode_dirty(new_dir); - new_inode->i_ctime = current_time(new_inode); + inode_set_ctime_current(new_inode); if (dir_de) drop_nlink(new_inode); drop_nlink(new_inode); @@ -406,7 +406,7 @@ static int nilfs_rename(struct mnt_idmap *idmap, * Like most other Unix systems, set the ctime for inodes on a * rename. */ - old_inode->i_ctime = current_time(old_inode); + inode_set_ctime_current(old_inode); nilfs_delete_entry(old_de, old_page); diff --git a/fs/nilfs2/super.c b/fs/nilfs2/super.c index 0ef8c71bde8e..a5d1fa4e7552 100644 --- a/fs/nilfs2/super.c +++ b/fs/nilfs2/super.c @@ -35,6 +35,7 @@ #include <linux/writeback.h> #include <linux/seq_file.h> #include <linux/mount.h> +#include <linux/fs_context.h> #include "nilfs.h" #include "export.h" #include "mdt.h" @@ -1216,7 +1217,6 @@ static int nilfs_remount(struct super_block *sb, int *flags, char *data) } struct nilfs_super_data { - struct block_device *bdev; __u64 cno; int flags; }; @@ -1283,64 +1283,49 @@ static int nilfs_identify(char *data, struct nilfs_super_data *sd) static int nilfs_set_bdev_super(struct super_block *s, void *data) { - s->s_bdev = data; - s->s_dev = s->s_bdev->bd_dev; + s->s_dev = *(dev_t *)data; return 0; } static int nilfs_test_bdev_super(struct super_block *s, void *data) { - return (void *)s->s_bdev == data; + return !(s->s_iflags & SB_I_RETIRED) && s->s_dev == *(dev_t *)data; } static struct dentry * nilfs_mount(struct file_system_type *fs_type, int flags, const char *dev_name, void *data) { - struct nilfs_super_data sd; + struct nilfs_super_data sd = { .flags = flags }; struct super_block *s; - struct dentry *root_dentry; - int err, s_new = false; + dev_t dev; + int err; - sd.bdev = blkdev_get_by_path(dev_name, sb_open_mode(flags), fs_type, - NULL); - if (IS_ERR(sd.bdev)) - return ERR_CAST(sd.bdev); + if (nilfs_identify(data, &sd)) + return ERR_PTR(-EINVAL); - sd.cno = 0; - sd.flags = flags; - if (nilfs_identify((char *)data, &sd)) { - err = -EINVAL; - goto failed; - } + err = lookup_bdev(dev_name, &dev); + if (err) + return ERR_PTR(err); - /* - * once the super is inserted into the list by sget, s_umount - * will protect the lockfs code from trying to start a snapshot - * while we are mounting - */ - mutex_lock(&sd.bdev->bd_fsfreeze_mutex); - if (sd.bdev->bd_fsfreeze_count > 0) { - mutex_unlock(&sd.bdev->bd_fsfreeze_mutex); - err = -EBUSY; - goto failed; - } s = sget(fs_type, nilfs_test_bdev_super, nilfs_set_bdev_super, flags, - sd.bdev); - mutex_unlock(&sd.bdev->bd_fsfreeze_mutex); - if (IS_ERR(s)) { - err = PTR_ERR(s); - goto failed; - } + &dev); + if (IS_ERR(s)) + return ERR_CAST(s); if (!s->s_root) { - s_new = true; - - /* New superblock instance created */ - snprintf(s->s_id, sizeof(s->s_id), "%pg", sd.bdev); - sb_set_blocksize(s, block_size(sd.bdev)); - - err = nilfs_fill_super(s, data, flags & SB_SILENT ? 1 : 0); + /* + * We drop s_umount here because we need to open the bdev and + * bdev->open_mutex ranks above s_umount (blkdev_put() -> + * __invalidate_device()). It is safe because we have active sb + * reference and SB_BORN is not set yet. + */ + up_write(&s->s_umount); + err = setup_bdev_super(s, flags, NULL); + down_write(&s->s_umount); + if (!err) + err = nilfs_fill_super(s, data, + flags & SB_SILENT ? 1 : 0); if (err) goto failed_super; @@ -1366,24 +1351,18 @@ nilfs_mount(struct file_system_type *fs_type, int flags, } if (sd.cno) { + struct dentry *root_dentry; + err = nilfs_attach_snapshot(s, sd.cno, &root_dentry); if (err) goto failed_super; - } else { - root_dentry = dget(s->s_root); + return root_dentry; } - if (!s_new) - blkdev_put(sd.bdev, fs_type); - - return root_dentry; + return dget(s->s_root); failed_super: deactivate_locked_super(s); - - failed: - if (!s_new) - blkdev_put(sd.bdev, fs_type); return ERR_PTR(err); } diff --git a/fs/nls/Kconfig b/fs/nls/Kconfig index c7857e36adbb..a0d0e2f7ec83 100644 --- a/fs/nls/Kconfig +++ b/fs/nls/Kconfig @@ -617,4 +617,12 @@ config NLS_UTF8 input/output character sets. Say Y here for the UTF-8 encoding of the Unicode/ISO9646 universal character set. +config NLS_UCS2_UTILS + tristate "NLS UCS-2 UTILS" + help + Set of older UCS-2 conversion utilities and tables used by some + filesystems including SMB/CIFS. This includes upper case conversion + tables. This will automatically be selected when the filesystem + that uses it is selected. + endif # NLS diff --git a/fs/nls/Makefile b/fs/nls/Makefile index ac54db297128..5062c699d041 100644 --- a/fs/nls/Makefile +++ b/fs/nls/Makefile @@ -54,3 +54,4 @@ obj-$(CONFIG_NLS_MAC_INUIT) += mac-inuit.o obj-$(CONFIG_NLS_MAC_ROMANIAN) += mac-romanian.o obj-$(CONFIG_NLS_MAC_ROMAN) += mac-roman.o obj-$(CONFIG_NLS_MAC_TURKISH) += mac-turkish.o +obj-$(CONFIG_NLS_UCS2_UTILS) += nls_ucs2_utils.o diff --git a/fs/nls/nls_ucs2_data.h b/fs/nls/nls_ucs2_data.h new file mode 100644 index 000000000000..1f454dc0f4e0 --- /dev/null +++ b/fs/nls/nls_ucs2_data.h @@ -0,0 +1,15 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ + +#ifndef _NLS_UCS2_DATA_H +#define _NLS_UCS2_DATA_H + +struct UniCaseRange { + wchar_t start; + wchar_t end; + signed char *table; +}; + +extern signed char NlsUniUpperTable[512]; +extern const struct UniCaseRange NlsUniUpperRange[]; + +#endif /* _NLS_UCS2_DATA_H */ diff --git a/fs/smb/server/uniupr.h b/fs/nls/nls_ucs2_utils.c index 26583b776897..a69781c54dd8 100644 --- a/fs/smb/server/uniupr.h +++ b/fs/nls/nls_ucs2_utils.c @@ -1,19 +1,27 @@ -/* SPDX-License-Identifier: GPL-2.0-or-later */ +// SPDX-License-Identifier: GPL-2.0-or-later /* * Some of the source code in this file came from fs/cifs/uniupr.h * Copyright (c) International Business Machines Corp., 2000,2002 * - * uniupr.h - Unicode compressed case ranges + * Some of the source code in this file came from fs/cifs/cifs_unicode.c + * + * Copyright (c) International Business Machines Corp., 2000,2009 + * Modified by Steve French (sfrench@us.ibm.com) + * Modified by Namjae Jeon (linkinjeon@kernel.org) * */ -#ifndef __KSMBD_UNIUPR_H -#define __KSMBD_UNIUPR_H +#include <linux/fs.h> +#include <linux/module.h> +#include <linux/slab.h> +#include <asm/unaligned.h> +#include "nls_ucs2_utils.h" + +MODULE_LICENSE("GPL"); -#ifndef UNIUPR_NOUPPER /* * Latin upper case */ -signed char SmbUniUpperTable[512] = { +signed char NlsUniUpperTable[512] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 000-00f */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 010-01f */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 020-02f */ @@ -51,6 +59,7 @@ signed char SmbUniUpperTable[512] = { 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, /* 1e0-1ef */ 0, 0, -1, -2, 0, -1, 0, 0, 0, -1, 0, -1, 0, -1, 0, -1, /* 1f0-1ff */ }; +EXPORT_SYMBOL_GPL(NlsUniUpperTable); /* Upper case range - Greek */ static signed char UniCaseRangeU03a0[47] = { @@ -126,7 +135,7 @@ static signed char UniCaseRangeUff40[27] = { /* * Upper Case Range */ -const struct UniCaseRange SmbUniUpperRange[] = { +const struct UniCaseRange NlsUniUpperRange[] = { {0x03a0, 0x03ce, UniCaseRangeU03a0}, {0x0430, 0x045f, UniCaseRangeU0430}, {0x0490, 0x04cc, UniCaseRangeU0490}, @@ -134,135 +143,4 @@ const struct UniCaseRange SmbUniUpperRange[] = { {0xff40, 0xff5a, UniCaseRangeUff40}, {0} }; -#endif - -#ifndef UNIUPR_NOLOWER -/* - * Latin lower case - */ -signed char CifsUniLowerTable[512] = { - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 000-00f */ - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 010-01f */ - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 020-02f */ - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 030-03f */ - 0, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, - 32, 32, 32, /* 040-04f */ - 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 0, 0, - 0, 0, 0, /* 050-05f */ - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 060-06f */ - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 070-07f */ - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 080-08f */ - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 090-09f */ - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0a0-0af */ - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0b0-0bf */ - 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, - 32, 32, 32, 32, /* 0c0-0cf */ - 32, 32, 32, 32, 32, 32, 32, 0, 32, 32, 32, 32, - 32, 32, 32, 0, /* 0d0-0df */ - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0e0-0ef */ - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0f0-0ff */ - 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, /* 100-10f */ - 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, /* 110-11f */ - 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, /* 120-12f */ - 0, 0, 1, 0, 1, 0, 1, 0, 0, 1, 0, 1, 0, 1, 0, 1, /* 130-13f */ - 0, 1, 0, 1, 0, 1, 0, 1, 0, 0, 1, 0, 1, 0, 1, 0, /* 140-14f */ - 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, /* 150-15f */ - 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, /* 160-16f */ - 1, 0, 1, 0, 1, 0, 1, 0, -121, 1, 0, 1, 0, 1, 0, - 0, /* 170-17f */ - 0, 0, 1, 0, 1, 0, 0, 1, 0, 0, 0, 1, 0, 0, 79, - 0, /* 180-18f */ - 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, /* 190-19f */ - 1, 0, 1, 0, 1, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 1, /* 1a0-1af */ - 0, 0, 0, 1, 0, 1, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, /* 1b0-1bf */ - 0, 0, 0, 0, 2, 1, 0, 2, 1, 0, 2, 1, 0, 1, 0, 1, /* 1c0-1cf */ - 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 0, 1, 0, /* 1d0-1df */ - 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, /* 1e0-1ef */ - 0, 2, 1, 0, 1, 0, 0, 0, 1, 0, 1, 0, 1, 0, 1, 0, /* 1f0-1ff */ -}; - -/* Lower case range - Greek */ -static signed char UniCaseRangeL0380[44] = { - 0, 0, 0, 0, 0, 0, 38, 0, 37, 37, 37, 0, 64, 0, 63, 63, /* 380-38f */ - 0, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, - 32, 32, 32, /* 390-39f */ - 32, 32, 0, 32, 32, 32, 32, 32, 32, 32, 32, 32, -}; - -/* Lower case range - Cyrillic */ -static signed char UniCaseRangeL0400[48] = { - 0, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, - 0, 80, 80, /* 400-40f */ - 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, - 32, 32, 32, /* 410-41f */ - 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, - 32, 32, 32, /* 420-42f */ -}; - -/* Lower case range - Extended cyrillic */ -static signed char UniCaseRangeL0490[60] = { - 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, /* 490-49f */ - 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, /* 4a0-4af */ - 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, /* 4b0-4bf */ - 0, 1, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, -}; - -/* Lower case range - Extended latin and greek */ -static signed char UniCaseRangeL1e00[504] = { - 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, /* 1e00-1e0f */ - 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, /* 1e10-1e1f */ - 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, /* 1e20-1e2f */ - 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, /* 1e30-1e3f */ - 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, /* 1e40-1e4f */ - 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, /* 1e50-1e5f */ - 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, /* 1e60-1e6f */ - 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, /* 1e70-1e7f */ - 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, /* 1e80-1e8f */ - 1, 0, 1, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 1, 0, /* 1e90-1e9f */ - 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, /* 1ea0-1eaf */ - 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, /* 1eb0-1ebf */ - 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, /* 1ec0-1ecf */ - 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, /* 1ed0-1edf */ - 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, /* 1ee0-1eef */ - 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 0, 0, 0, 0, 0, 0, /* 1ef0-1eff */ - 0, 0, 0, 0, 0, 0, 0, 0, -8, -8, -8, -8, -8, -8, -8, -8, /* 1f00-1f0f */ - 0, 0, 0, 0, 0, 0, 0, 0, -8, -8, -8, -8, -8, -8, 0, 0, /* 1f10-1f1f */ - 0, 0, 0, 0, 0, 0, 0, 0, -8, -8, -8, -8, -8, -8, -8, -8, /* 1f20-1f2f */ - 0, 0, 0, 0, 0, 0, 0, 0, -8, -8, -8, -8, -8, -8, -8, -8, /* 1f30-1f3f */ - 0, 0, 0, 0, 0, 0, 0, 0, -8, -8, -8, -8, -8, -8, 0, 0, /* 1f40-1f4f */ - 0, 0, 0, 0, 0, 0, 0, 0, 0, -8, 0, -8, 0, -8, 0, -8, /* 1f50-1f5f */ - 0, 0, 0, 0, 0, 0, 0, 0, -8, -8, -8, -8, -8, -8, -8, -8, /* 1f60-1f6f */ - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 1f70-1f7f */ - 0, 0, 0, 0, 0, 0, 0, 0, -8, -8, -8, -8, -8, -8, -8, -8, /* 1f80-1f8f */ - 0, 0, 0, 0, 0, 0, 0, 0, -8, -8, -8, -8, -8, -8, -8, -8, /* 1f90-1f9f */ - 0, 0, 0, 0, 0, 0, 0, 0, -8, -8, -8, -8, -8, -8, -8, -8, /* 1fa0-1faf */ - 0, 0, 0, 0, 0, 0, 0, 0, -8, -8, -74, -74, -9, 0, 0, 0, /* 1fb0-1fbf */ - 0, 0, 0, 0, 0, 0, 0, 0, -86, -86, -86, -86, -9, 0, - 0, 0, /* 1fc0-1fcf */ - 0, 0, 0, 0, 0, 0, 0, 0, -8, -8, -100, -100, 0, 0, 0, 0, /* 1fd0-1fdf */ - 0, 0, 0, 0, 0, 0, 0, 0, -8, -8, -112, -112, -7, 0, - 0, 0, /* 1fe0-1fef */ - 0, 0, 0, 0, 0, 0, 0, 0, -}; - -/* Lower case range - Wide latin */ -static signed char UniCaseRangeLff20[27] = { - 0, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, - 32, /* ff20-ff2f */ - 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, -}; - -/* - * Lower Case Range - */ -const struct UniCaseRange CifsUniLowerRange[] = { - {0x0380, 0x03ab, UniCaseRangeL0380}, - {0x0400, 0x042f, UniCaseRangeL0400}, - {0x0490, 0x04cb, UniCaseRangeL0490}, - {0x1e00, 0x1ff7, UniCaseRangeL1e00}, - {0xff20, 0xff3a, UniCaseRangeLff20}, - {0} -}; -#endif - -#endif /* __KSMBD_UNIUPR_H */ +EXPORT_SYMBOL_GPL(NlsUniUpperRange); diff --git a/fs/nls/nls_ucs2_utils.h b/fs/nls/nls_ucs2_utils.h new file mode 100644 index 000000000000..ef18d30db1d0 --- /dev/null +++ b/fs/nls/nls_ucs2_utils.h @@ -0,0 +1,285 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +/* + * Some of the source code in this file came from fs/cifs/cifs_unicode.c + * and then via server/unicode.c + * cifs_unicode: Unicode kernel case support + * + * Function: + * Convert a unicode character to upper or lower case using + * compressed tables. + * + * Copyright (c) International Business Machines Corp., 2000,2009 + * + * + * Notes: + * These APIs are based on the C library functions. The semantics + * should match the C functions but with expanded size operands. + * + * The upper/lower functions are based on a table created by mkupr. + * This is a compressed table of upper and lower case conversion. + * + */ +#ifndef _NLS_UCS2_UTILS_H +#define _NLS_UCS2_UTILS_H + +#include <asm/byteorder.h> +#include <linux/types.h> +#include <linux/nls.h> +#include <linux/unicode.h> +#include "nls_ucs2_data.h" + +/* + * Windows maps these to the user defined 16 bit Unicode range since they are + * reserved symbols (along with \ and /), otherwise illegal to store + * in filenames in NTFS + */ +#define UNI_ASTERISK ((__u16)('*' + 0xF000)) +#define UNI_QUESTION ((__u16)('?' + 0xF000)) +#define UNI_COLON ((__u16)(':' + 0xF000)) +#define UNI_GRTRTHAN ((__u16)('>' + 0xF000)) +#define UNI_LESSTHAN ((__u16)('<' + 0xF000)) +#define UNI_PIPE ((__u16)('|' + 0xF000)) +#define UNI_SLASH ((__u16)('\\' + 0xF000)) + +/* + * UniStrcat: Concatenate the second string to the first + * + * Returns: + * Address of the first string + */ +static inline wchar_t *UniStrcat(wchar_t *ucs1, const wchar_t *ucs2) +{ + wchar_t *anchor = ucs1; /* save a pointer to start of ucs1 */ + + while (*ucs1++) + /*NULL*/; /* To end of first string */ + ucs1--; /* Return to the null */ + while ((*ucs1++ = *ucs2++)) + /*NULL*/; /* copy string 2 over */ + return anchor; +} + +/* + * UniStrchr: Find a character in a string + * + * Returns: + * Address of first occurrence of character in string + * or NULL if the character is not in the string + */ +static inline wchar_t *UniStrchr(const wchar_t *ucs, wchar_t uc) +{ + while ((*ucs != uc) && *ucs) + ucs++; + + if (*ucs == uc) + return (wchar_t *)ucs; + return NULL; +} + +/* + * UniStrcmp: Compare two strings + * + * Returns: + * < 0: First string is less than second + * = 0: Strings are equal + * > 0: First string is greater than second + */ +static inline int UniStrcmp(const wchar_t *ucs1, const wchar_t *ucs2) +{ + while ((*ucs1 == *ucs2) && *ucs1) { + ucs1++; + ucs2++; + } + return (int)*ucs1 - (int)*ucs2; +} + +/* + * UniStrcpy: Copy a string + */ +static inline wchar_t *UniStrcpy(wchar_t *ucs1, const wchar_t *ucs2) +{ + wchar_t *anchor = ucs1; /* save the start of result string */ + + while ((*ucs1++ = *ucs2++)) + /*NULL*/; + return anchor; +} + +/* + * UniStrlen: Return the length of a string (in 16 bit Unicode chars not bytes) + */ +static inline size_t UniStrlen(const wchar_t *ucs1) +{ + int i = 0; + + while (*ucs1++) + i++; + return i; +} + +/* + * UniStrnlen: Return the length (in 16 bit Unicode chars not bytes) of a + * string (length limited) + */ +static inline size_t UniStrnlen(const wchar_t *ucs1, int maxlen) +{ + int i = 0; + + while (*ucs1++) { + i++; + if (i >= maxlen) + break; + } + return i; +} + +/* + * UniStrncat: Concatenate length limited string + */ +static inline wchar_t *UniStrncat(wchar_t *ucs1, const wchar_t *ucs2, size_t n) +{ + wchar_t *anchor = ucs1; /* save pointer to string 1 */ + + while (*ucs1++) + /*NULL*/; + ucs1--; /* point to null terminator of s1 */ + while (n-- && (*ucs1 = *ucs2)) { /* copy s2 after s1 */ + ucs1++; + ucs2++; + } + *ucs1 = 0; /* Null terminate the result */ + return anchor; +} + +/* + * UniStrncmp: Compare length limited string + */ +static inline int UniStrncmp(const wchar_t *ucs1, const wchar_t *ucs2, size_t n) +{ + if (!n) + return 0; /* Null strings are equal */ + while ((*ucs1 == *ucs2) && *ucs1 && --n) { + ucs1++; + ucs2++; + } + return (int)*ucs1 - (int)*ucs2; +} + +/* + * UniStrncmp_le: Compare length limited string - native to little-endian + */ +static inline int +UniStrncmp_le(const wchar_t *ucs1, const wchar_t *ucs2, size_t n) +{ + if (!n) + return 0; /* Null strings are equal */ + while ((*ucs1 == __le16_to_cpu(*ucs2)) && *ucs1 && --n) { + ucs1++; + ucs2++; + } + return (int)*ucs1 - (int)__le16_to_cpu(*ucs2); +} + +/* + * UniStrncpy: Copy length limited string with pad + */ +static inline wchar_t *UniStrncpy(wchar_t *ucs1, const wchar_t *ucs2, size_t n) +{ + wchar_t *anchor = ucs1; + + while (n-- && *ucs2) /* Copy the strings */ + *ucs1++ = *ucs2++; + + n++; + while (n--) /* Pad with nulls */ + *ucs1++ = 0; + return anchor; +} + +/* + * UniStrncpy_le: Copy length limited string with pad to little-endian + */ +static inline wchar_t *UniStrncpy_le(wchar_t *ucs1, const wchar_t *ucs2, size_t n) +{ + wchar_t *anchor = ucs1; + + while (n-- && *ucs2) /* Copy the strings */ + *ucs1++ = __le16_to_cpu(*ucs2++); + + n++; + while (n--) /* Pad with nulls */ + *ucs1++ = 0; + return anchor; +} + +/* + * UniStrstr: Find a string in a string + * + * Returns: + * Address of first match found + * NULL if no matching string is found + */ +static inline wchar_t *UniStrstr(const wchar_t *ucs1, const wchar_t *ucs2) +{ + const wchar_t *anchor1 = ucs1; + const wchar_t *anchor2 = ucs2; + + while (*ucs1) { + if (*ucs1 == *ucs2) { + /* Partial match found */ + ucs1++; + ucs2++; + } else { + if (!*ucs2) /* Match found */ + return (wchar_t *)anchor1; + ucs1 = ++anchor1; /* No match */ + ucs2 = anchor2; + } + } + + if (!*ucs2) /* Both end together */ + return (wchar_t *)anchor1; /* Match found */ + return NULL; /* No match */ +} + +#ifndef UNIUPR_NOUPPER +/* + * UniToupper: Convert a unicode character to upper case + */ +static inline wchar_t UniToupper(register wchar_t uc) +{ + register const struct UniCaseRange *rp; + + if (uc < sizeof(NlsUniUpperTable)) { + /* Latin characters */ + return uc + NlsUniUpperTable[uc]; /* Use base tables */ + } + + rp = NlsUniUpperRange; /* Use range tables */ + while (rp->start) { + if (uc < rp->start) /* Before start of range */ + return uc; /* Uppercase = input */ + if (uc <= rp->end) /* In range */ + return uc + rp->table[uc - rp->start]; + rp++; /* Try next range */ + } + return uc; /* Past last range */ +} + +/* + * UniStrupr: Upper case a unicode string + */ +static inline __le16 *UniStrupr(register __le16 *upin) +{ + register __le16 *up; + + up = upin; + while (*up) { /* For all characters */ + *up = cpu_to_le16(UniToupper(le16_to_cpu(*up))); + up++; + } + return upin; /* Return input pointer */ +} +#endif /* UNIUPR_NOUPPER */ + +#endif /* _NLS_UCS2_UTILS_H */ diff --git a/fs/notify/dnotify/dnotify.c b/fs/notify/dnotify/dnotify.c index 190aa717fa32..ebdcc25df0f7 100644 --- a/fs/notify/dnotify/dnotify.c +++ b/fs/notify/dnotify/dnotify.c @@ -199,7 +199,7 @@ void dnotify_flush(struct file *filp, fl_owner_t id) } /* this conversion is done only at watch creation */ -static __u32 convert_arg(unsigned long arg) +static __u32 convert_arg(unsigned int arg) { __u32 new_mask = FS_EVENT_ON_CHILD; @@ -258,7 +258,7 @@ static int attach_dn(struct dnotify_struct *dn, struct dnotify_mark *dn_mark, * up here. Allocate both a mark for fsnotify to add and a dnotify_struct to be * attached to the fsnotify_mark. */ -int fcntl_dirnotify(int fd, struct file *filp, unsigned long arg) +int fcntl_dirnotify(int fd, struct file *filp, unsigned int arg) { struct dnotify_mark *new_dn_mark, *dn_mark; struct fsnotify_mark *new_fsn_mark, *fsn_mark; diff --git a/fs/nsfs.c b/fs/nsfs.c index f602a96a1afe..647a22433bd8 100644 --- a/fs/nsfs.c +++ b/fs/nsfs.c @@ -84,7 +84,7 @@ slow: return -ENOMEM; } inode->i_ino = ns->inum; - inode->i_mtime = inode->i_atime = inode->i_ctime = current_time(inode); + inode->i_mtime = inode->i_atime = inode_set_ctime_current(inode); inode->i_flags |= S_IMMUTABLE; inode->i_mode = S_IFREG | S_IRUGO; inode->i_fop = &ns_file_operations; diff --git a/fs/ntfs/Kconfig b/fs/ntfs/Kconfig index f93e69a61283..7b2509741735 100644 --- a/fs/ntfs/Kconfig +++ b/fs/ntfs/Kconfig @@ -1,6 +1,7 @@ # SPDX-License-Identifier: GPL-2.0-only config NTFS_FS tristate "NTFS file system support" + select BUFFER_HEAD select NLS help NTFS is the file system of Microsoft Windows NT, 2000, XP and 2003. diff --git a/fs/ntfs/dir.c b/fs/ntfs/dir.c index 518c3a21a556..4596c90e7b7c 100644 --- a/fs/ntfs/dir.c +++ b/fs/ntfs/dir.c @@ -1525,10 +1525,11 @@ static int ntfs_dir_fsync(struct file *filp, loff_t start, loff_t end, #endif /* NTFS_RW */ +WRAP_DIR_ITER(ntfs_readdir) // FIXME! const struct file_operations ntfs_dir_ops = { .llseek = generic_file_llseek, /* Seek inside directory. */ .read = generic_read_dir, /* Return -EISDIR. */ - .iterate = ntfs_readdir, /* Read directory contents. */ + .iterate_shared = shared_ntfs_readdir, /* Read directory contents. */ #ifdef NTFS_RW .fsync = ntfs_dir_fsync, /* Sync a directory to disk. */ #endif /* NTFS_RW */ diff --git a/fs/ntfs/inode.c b/fs/ntfs/inode.c index 6c3f38d66579..99ac6ea277c4 100644 --- a/fs/ntfs/inode.c +++ b/fs/ntfs/inode.c @@ -654,7 +654,7 @@ static int ntfs_read_locked_inode(struct inode *vi) * always changes, when mtime is changed. ctime can be changed on its * own, mtime is then not changed, e.g. when a file is renamed. */ - vi->i_ctime = ntfs2utc(si->last_mft_change_time); + inode_set_ctime_to_ts(vi, ntfs2utc(si->last_mft_change_time)); /* * Last access to the data within the file. Not changed during a rename * for example but changed whenever the file is written to. @@ -1218,7 +1218,7 @@ static int ntfs_read_locked_attr_inode(struct inode *base_vi, struct inode *vi) vi->i_gid = base_vi->i_gid; set_nlink(vi, base_vi->i_nlink); vi->i_mtime = base_vi->i_mtime; - vi->i_ctime = base_vi->i_ctime; + inode_set_ctime_to_ts(vi, inode_get_ctime(base_vi)); vi->i_atime = base_vi->i_atime; vi->i_generation = ni->seq_no = base_ni->seq_no; @@ -1484,7 +1484,7 @@ static int ntfs_read_locked_index_inode(struct inode *base_vi, struct inode *vi) vi->i_gid = base_vi->i_gid; set_nlink(vi, base_vi->i_nlink); vi->i_mtime = base_vi->i_mtime; - vi->i_ctime = base_vi->i_ctime; + inode_set_ctime_to_ts(vi, inode_get_ctime(base_vi)); vi->i_atime = base_vi->i_atime; vi->i_generation = ni->seq_no = base_ni->seq_no; /* Set inode type to zero but preserve permissions. */ @@ -2804,13 +2804,14 @@ done: */ if (!IS_NOCMTIME(VFS_I(base_ni)) && !IS_RDONLY(VFS_I(base_ni))) { struct timespec64 now = current_time(VFS_I(base_ni)); + struct timespec64 ctime = inode_get_ctime(VFS_I(base_ni)); int sync_it = 0; if (!timespec64_equal(&VFS_I(base_ni)->i_mtime, &now) || - !timespec64_equal(&VFS_I(base_ni)->i_ctime, &now)) + !timespec64_equal(&ctime, &now)) sync_it = 1; + inode_set_ctime_to_ts(VFS_I(base_ni), now); VFS_I(base_ni)->i_mtime = now; - VFS_I(base_ni)->i_ctime = now; if (sync_it) mark_inode_dirty_sync(VFS_I(base_ni)); @@ -2928,7 +2929,7 @@ int ntfs_setattr(struct mnt_idmap *idmap, struct dentry *dentry, if (ia_valid & ATTR_MTIME) vi->i_mtime = attr->ia_mtime; if (ia_valid & ATTR_CTIME) - vi->i_ctime = attr->ia_ctime; + inode_set_ctime_to_ts(vi, attr->ia_ctime); mark_inode_dirty(vi); out: return err; @@ -3004,7 +3005,7 @@ int __ntfs_write_inode(struct inode *vi, int sync) si->last_data_change_time = nt; modified = true; } - nt = utc2ntfs(vi->i_ctime); + nt = utc2ntfs(inode_get_ctime(vi)); if (si->last_mft_change_time != nt) { ntfs_debug("Updating ctime for inode 0x%lx: old = 0x%llx, " "new = 0x%llx", vi->i_ino, (long long) diff --git a/fs/ntfs/mft.c b/fs/ntfs/mft.c index 0155f106ec34..ad1a8f72da22 100644 --- a/fs/ntfs/mft.c +++ b/fs/ntfs/mft.c @@ -2682,8 +2682,7 @@ mft_rec_already_initialized: vi->i_mode &= ~S_IWUGO; /* Set the inode times to the current time. */ - vi->i_atime = vi->i_mtime = vi->i_ctime = - current_time(vi); + vi->i_atime = vi->i_mtime = inode_set_ctime_current(vi); /* * Set the file size to 0, the ntfs inode sizes are set to 0 by * the call to ntfs_init_big_inode() below. diff --git a/fs/ntfs3/Kconfig b/fs/ntfs3/Kconfig index 96cc236f7f7b..cdfdf51e55d7 100644 --- a/fs/ntfs3/Kconfig +++ b/fs/ntfs3/Kconfig @@ -1,6 +1,7 @@ # SPDX-License-Identifier: GPL-2.0-only config NTFS3_FS tristate "NTFS Read-Write file system support" + select BUFFER_HEAD select NLS select LEGACY_DIRECT_IO help diff --git a/fs/ntfs3/file.c b/fs/ntfs3/file.c index 1d6c824246c4..962f12ce6c0a 100644 --- a/fs/ntfs3/file.c +++ b/fs/ntfs3/file.c @@ -85,7 +85,7 @@ int ntfs_getattr(struct mnt_idmap *idmap, const struct path *path, stat->attributes_mask |= STATX_ATTR_COMPRESSED | STATX_ATTR_ENCRYPTED; - generic_fillattr(idmap, inode, stat); + generic_fillattr(idmap, request_mask, inode, stat); stat->result_mask |= STATX_BTIME; stat->btime = ni->i_crtime; @@ -342,7 +342,7 @@ static int ntfs_extend(struct inode *inode, loff_t pos, size_t count, err = 0; } - inode->i_ctime = inode->i_mtime = current_time(inode); + inode->i_mtime = inode_set_ctime_current(inode); mark_inode_dirty(inode); if (IS_SYNC(inode)) { @@ -400,7 +400,7 @@ static int ntfs_truncate(struct inode *inode, loff_t new_size) ni_unlock(ni); ni->std_fa |= FILE_ATTRIBUTE_ARCHIVE; - inode->i_ctime = inode->i_mtime = current_time(inode); + inode->i_mtime = inode_set_ctime_current(inode); if (!IS_DIRSYNC(inode)) { dirty = 1; } else { @@ -642,7 +642,7 @@ out: filemap_invalidate_unlock(mapping); if (!err) { - inode->i_ctime = inode->i_mtime = current_time(inode); + inode->i_mtime = inode_set_ctime_current(inode); mark_inode_dirty(inode); } diff --git a/fs/ntfs3/frecord.c b/fs/ntfs3/frecord.c index 16bd9faa2d28..2b85cb10f0be 100644 --- a/fs/ntfs3/frecord.c +++ b/fs/ntfs3/frecord.c @@ -3265,6 +3265,7 @@ int ni_write_inode(struct inode *inode, int sync, const char *hint) if (is_rec_inuse(ni->mi.mrec) && !(sbi->flags & NTFS_FLAGS_LOG_REPLAYING) && inode->i_nlink) { bool modified = false; + struct timespec64 ctime = inode_get_ctime(inode); /* Update times in standard attribute. */ std = ni_std(ni); @@ -3280,7 +3281,7 @@ int ni_write_inode(struct inode *inode, int sync, const char *hint) modified = true; } - dup.c_time = kernel2nt(&inode->i_ctime); + dup.c_time = kernel2nt(&ctime); if (std->c_time != dup.c_time) { std->c_time = dup.c_time; modified = true; diff --git a/fs/ntfs3/inode.c b/fs/ntfs3/inode.c index 8ae572aacc69..eb2ed0701495 100644 --- a/fs/ntfs3/inode.c +++ b/fs/ntfs3/inode.c @@ -44,6 +44,7 @@ static struct inode *ntfs_read_mft(struct inode *inode, u64 t64; struct MFT_REC *rec; struct runs_tree *run; + struct timespec64 ctime; inode->i_op = NULL; /* Setup 'uid' and 'gid' */ @@ -169,7 +170,8 @@ next_attr: nt2kernel(std5->cr_time, &ni->i_crtime); #endif nt2kernel(std5->a_time, &inode->i_atime); - nt2kernel(std5->c_time, &inode->i_ctime); + ctime = inode_get_ctime(inode); + nt2kernel(std5->c_time, &ctime); nt2kernel(std5->m_time, &inode->i_mtime); ni->std_fa = std5->fa; @@ -958,7 +960,7 @@ int ntfs_write_end(struct file *file, struct address_space *mapping, loff_t pos, if (err >= 0) { if (!(ni->std_fa & FILE_ATTRIBUTE_ARCHIVE)) { - inode->i_ctime = inode->i_mtime = current_time(inode); + inode->i_mtime = inode_set_ctime_current(inode); ni->std_fa |= FILE_ATTRIBUTE_ARCHIVE; dirty = true; } @@ -1658,8 +1660,8 @@ struct inode *ntfs_create_inode(struct mnt_idmap *idmap, struct inode *dir, d_instantiate(dentry, inode); /* Set original time. inode times (i_ctime) may be changed in ntfs_init_acl. */ - inode->i_atime = inode->i_mtime = inode->i_ctime = dir->i_mtime = - dir->i_ctime = ni->i_crtime; + inode->i_atime = inode->i_mtime = inode_set_ctime_to_ts(inode, ni->i_crtime); + dir->i_mtime = inode_set_ctime_to_ts(dir, ni->i_crtime); mark_inode_dirty(dir); mark_inode_dirty(inode); @@ -1765,9 +1767,9 @@ int ntfs_unlink_inode(struct inode *dir, const struct dentry *dentry) if (!err) { drop_nlink(inode); - dir->i_mtime = dir->i_ctime = current_time(dir); + dir->i_mtime = inode_set_ctime_current(dir); mark_inode_dirty(dir); - inode->i_ctime = dir->i_ctime; + inode_set_ctime_to_ts(inode, inode_get_ctime(dir)); if (inode->i_nlink) mark_inode_dirty(inode); } else if (!ni_remove_name_undo(dir_ni, ni, de, de2, undo_remove)) { diff --git a/fs/ntfs3/namei.c b/fs/ntfs3/namei.c index 70f8c859e0ad..ad430d50bd79 100644 --- a/fs/ntfs3/namei.c +++ b/fs/ntfs3/namei.c @@ -156,8 +156,8 @@ static int ntfs_link(struct dentry *ode, struct inode *dir, struct dentry *de) err = ntfs_link_inode(inode, de); if (!err) { - dir->i_ctime = dir->i_mtime = inode->i_ctime = - current_time(dir); + dir->i_mtime = inode_set_ctime_to_ts(inode, + inode_set_ctime_current(dir)); mark_inode_dirty(inode); mark_inode_dirty(dir); d_instantiate(de, inode); @@ -324,14 +324,11 @@ static int ntfs_rename(struct mnt_idmap *idmap, struct inode *dir, /* Restore after failed rename failed too. */ _ntfs_bad_inode(inode); } else if (!err) { - inode->i_ctime = dir->i_ctime = dir->i_mtime = - current_time(dir); + simple_rename_timestamp(dir, dentry, new_dir, new_dentry); mark_inode_dirty(inode); mark_inode_dirty(dir); - if (dir != new_dir) { - new_dir->i_mtime = new_dir->i_ctime = dir->i_ctime; + if (dir != new_dir) mark_inode_dirty(new_dir); - } if (IS_DIRSYNC(dir)) ntfs_sync_inode(dir); diff --git a/fs/ntfs3/super.c b/fs/ntfs3/super.c index 1a02072b6b0e..5fffddea554f 100644 --- a/fs/ntfs3/super.c +++ b/fs/ntfs3/super.c @@ -569,9 +569,9 @@ static void init_once(void *foo) } /* - * put_ntfs - Noinline to reduce binary size. + * Noinline to reduce binary size. */ -static noinline void put_ntfs(struct ntfs_sb_info *sbi) +static noinline void ntfs3_free_sbi(struct ntfs_sb_info *sbi) { kfree(sbi->new_rec); kvfree(ntfs_put_shared(sbi->upcase)); @@ -625,12 +625,6 @@ static void ntfs_put_super(struct super_block *sb) /* Mark rw ntfs as clear, if possible. */ ntfs_set_state(sbi, NTFS_DIRTY_CLEAR); - - put_mount_options(sbi->options); - put_ntfs(sbi); - sb->s_fs_info = NULL; - - sync_blockdev(sb->s_bdev); } static int ntfs_statfs(struct dentry *dentry, struct kstatfs *buf) @@ -1564,15 +1558,7 @@ load_root: put_inode_out: iput(inode); out: - /* - * Free resources here. - * ntfs_fs_free will be called with fc->s_fs_info = NULL - */ - put_mount_options(sbi->options); - put_ntfs(sbi); - sb->s_fs_info = NULL; kfree(boot2); - return err; } @@ -1659,7 +1645,7 @@ static void ntfs_fs_free(struct fs_context *fc) struct ntfs_sb_info *sbi = fc->s_fs_info; if (sbi) - put_ntfs(sbi); + ntfs3_free_sbi(sbi); if (opts) put_mount_options(opts); @@ -1728,13 +1714,24 @@ free_opts: return -ENOMEM; } +static void ntfs3_kill_sb(struct super_block *sb) +{ + struct ntfs_sb_info *sbi = sb->s_fs_info; + + kill_block_super(sb); + + if (sbi->options) + put_mount_options(sbi->options); + ntfs3_free_sbi(sbi); +} + // clang-format off static struct file_system_type ntfs_fs_type = { .owner = THIS_MODULE, .name = "ntfs3", .init_fs_context = ntfs_init_fs_context, .parameters = ntfs_fs_parameters, - .kill_sb = kill_block_super, + .kill_sb = ntfs3_kill_sb, .fs_flags = FS_REQUIRES_DEV | FS_ALLOW_IDMAP, }; // clang-format on diff --git a/fs/ntfs3/xattr.c b/fs/ntfs3/xattr.c index 023f314e8950..29fd391899e5 100644 --- a/fs/ntfs3/xattr.c +++ b/fs/ntfs3/xattr.c @@ -637,7 +637,7 @@ static noinline int ntfs_set_acl_ex(struct mnt_idmap *idmap, if (!err) { set_cached_acl(inode, type, acl); inode->i_mode = mode; - inode->i_ctime = current_time(inode); + inode_set_ctime_current(inode); mark_inode_dirty(inode); } @@ -924,7 +924,7 @@ set_new_fa: NULL); out: - inode->i_ctime = current_time(inode); + inode_set_ctime_current(inode); mark_inode_dirty(inode); return err; diff --git a/fs/ocfs2/Kconfig b/fs/ocfs2/Kconfig index 3123da7cfb30..2514d36cbe01 100644 --- a/fs/ocfs2/Kconfig +++ b/fs/ocfs2/Kconfig @@ -2,6 +2,7 @@ config OCFS2_FS tristate "OCFS2 file system support" depends on INET && SYSFS && CONFIGFS_FS + select BUFFER_HEAD select JBD2 select CRC32 select QUOTA diff --git a/fs/ocfs2/acl.c b/fs/ocfs2/acl.c index 9fd03eaf15f8..e75137a8e7cb 100644 --- a/fs/ocfs2/acl.c +++ b/fs/ocfs2/acl.c @@ -191,10 +191,10 @@ static int ocfs2_acl_set_mode(struct inode *inode, struct buffer_head *di_bh, } inode->i_mode = new_mode; - inode->i_ctime = current_time(inode); + inode_set_ctime_current(inode); di->i_mode = cpu_to_le16(inode->i_mode); - di->i_ctime = cpu_to_le64(inode->i_ctime.tv_sec); - di->i_ctime_nsec = cpu_to_le32(inode->i_ctime.tv_nsec); + di->i_ctime = cpu_to_le64(inode_get_ctime(inode).tv_sec); + di->i_ctime_nsec = cpu_to_le32(inode_get_ctime(inode).tv_nsec); ocfs2_update_inode_fsync_trans(handle, inode, 0); ocfs2_journal_dirty(handle, di_bh); diff --git a/fs/ocfs2/alloc.c b/fs/ocfs2/alloc.c index 51c93929a146..aef58f1395c8 100644 --- a/fs/ocfs2/alloc.c +++ b/fs/ocfs2/alloc.c @@ -7436,10 +7436,10 @@ int ocfs2_truncate_inline(struct inode *inode, struct buffer_head *di_bh, } inode->i_blocks = ocfs2_inode_sector_count(inode); - inode->i_ctime = inode->i_mtime = current_time(inode); + inode->i_mtime = inode_set_ctime_current(inode); - di->i_ctime = di->i_mtime = cpu_to_le64(inode->i_ctime.tv_sec); - di->i_ctime_nsec = di->i_mtime_nsec = cpu_to_le32(inode->i_ctime.tv_nsec); + di->i_ctime = di->i_mtime = cpu_to_le64(inode_get_ctime(inode).tv_sec); + di->i_ctime_nsec = di->i_mtime_nsec = cpu_to_le32(inode_get_ctime(inode).tv_nsec); ocfs2_update_inode_fsync_trans(handle, inode, 1); ocfs2_journal_dirty(handle, di_bh); diff --git a/fs/ocfs2/aops.c b/fs/ocfs2/aops.c index 8dfc284e85f0..0fdba30740ab 100644 --- a/fs/ocfs2/aops.c +++ b/fs/ocfs2/aops.c @@ -2048,7 +2048,7 @@ out_write_size: } inode->i_blocks = ocfs2_inode_sector_count(inode); di->i_size = cpu_to_le64((u64)i_size_read(inode)); - inode->i_mtime = inode->i_ctime = current_time(inode); + inode->i_mtime = inode_set_ctime_current(inode); di->i_mtime = di->i_ctime = cpu_to_le64(inode->i_mtime.tv_sec); di->i_mtime_nsec = di->i_ctime_nsec = cpu_to_le32(inode->i_mtime.tv_nsec); if (handle) diff --git a/fs/ocfs2/cluster/netdebug.c b/fs/ocfs2/cluster/netdebug.c index 35c05c18de59..bc27301eab6d 100644 --- a/fs/ocfs2/cluster/netdebug.c +++ b/fs/ocfs2/cluster/netdebug.c @@ -44,17 +44,17 @@ static LIST_HEAD(send_tracking); void o2net_debug_add_nst(struct o2net_send_tracking *nst) { - spin_lock(&o2net_debug_lock); + spin_lock_bh(&o2net_debug_lock); list_add(&nst->st_net_debug_item, &send_tracking); - spin_unlock(&o2net_debug_lock); + spin_unlock_bh(&o2net_debug_lock); } void o2net_debug_del_nst(struct o2net_send_tracking *nst) { - spin_lock(&o2net_debug_lock); + spin_lock_bh(&o2net_debug_lock); if (!list_empty(&nst->st_net_debug_item)) list_del_init(&nst->st_net_debug_item); - spin_unlock(&o2net_debug_lock); + spin_unlock_bh(&o2net_debug_lock); } static struct o2net_send_tracking @@ -84,9 +84,9 @@ static void *nst_seq_start(struct seq_file *seq, loff_t *pos) { struct o2net_send_tracking *nst, *dummy_nst = seq->private; - spin_lock(&o2net_debug_lock); + spin_lock_bh(&o2net_debug_lock); nst = next_nst(dummy_nst); - spin_unlock(&o2net_debug_lock); + spin_unlock_bh(&o2net_debug_lock); return nst; } @@ -95,13 +95,13 @@ static void *nst_seq_next(struct seq_file *seq, void *v, loff_t *pos) { struct o2net_send_tracking *nst, *dummy_nst = seq->private; - spin_lock(&o2net_debug_lock); + spin_lock_bh(&o2net_debug_lock); nst = next_nst(dummy_nst); list_del_init(&dummy_nst->st_net_debug_item); if (nst) list_add(&dummy_nst->st_net_debug_item, &nst->st_net_debug_item); - spin_unlock(&o2net_debug_lock); + spin_unlock_bh(&o2net_debug_lock); return nst; /* unused, just needs to be null when done */ } @@ -112,7 +112,7 @@ static int nst_seq_show(struct seq_file *seq, void *v) ktime_t now; s64 sock, send, status; - spin_lock(&o2net_debug_lock); + spin_lock_bh(&o2net_debug_lock); nst = next_nst(dummy_nst); if (!nst) goto out; @@ -145,7 +145,7 @@ static int nst_seq_show(struct seq_file *seq, void *v) (long long)status); out: - spin_unlock(&o2net_debug_lock); + spin_unlock_bh(&o2net_debug_lock); return 0; } @@ -191,16 +191,16 @@ static const struct file_operations nst_seq_fops = { void o2net_debug_add_sc(struct o2net_sock_container *sc) { - spin_lock(&o2net_debug_lock); + spin_lock_bh(&o2net_debug_lock); list_add(&sc->sc_net_debug_item, &sock_containers); - spin_unlock(&o2net_debug_lock); + spin_unlock_bh(&o2net_debug_lock); } void o2net_debug_del_sc(struct o2net_sock_container *sc) { - spin_lock(&o2net_debug_lock); + spin_lock_bh(&o2net_debug_lock); list_del_init(&sc->sc_net_debug_item); - spin_unlock(&o2net_debug_lock); + spin_unlock_bh(&o2net_debug_lock); } struct o2net_sock_debug { @@ -236,9 +236,9 @@ static void *sc_seq_start(struct seq_file *seq, loff_t *pos) struct o2net_sock_debug *sd = seq->private; struct o2net_sock_container *sc, *dummy_sc = sd->dbg_sock; - spin_lock(&o2net_debug_lock); + spin_lock_bh(&o2net_debug_lock); sc = next_sc(dummy_sc); - spin_unlock(&o2net_debug_lock); + spin_unlock_bh(&o2net_debug_lock); return sc; } @@ -248,12 +248,12 @@ static void *sc_seq_next(struct seq_file *seq, void *v, loff_t *pos) struct o2net_sock_debug *sd = seq->private; struct o2net_sock_container *sc, *dummy_sc = sd->dbg_sock; - spin_lock(&o2net_debug_lock); + spin_lock_bh(&o2net_debug_lock); sc = next_sc(dummy_sc); list_del_init(&dummy_sc->sc_net_debug_item); if (sc) list_add(&dummy_sc->sc_net_debug_item, &sc->sc_net_debug_item); - spin_unlock(&o2net_debug_lock); + spin_unlock_bh(&o2net_debug_lock); return sc; /* unused, just needs to be null when done */ } @@ -349,7 +349,7 @@ static int sc_seq_show(struct seq_file *seq, void *v) struct o2net_sock_debug *sd = seq->private; struct o2net_sock_container *sc, *dummy_sc = sd->dbg_sock; - spin_lock(&o2net_debug_lock); + spin_lock_bh(&o2net_debug_lock); sc = next_sc(dummy_sc); if (sc) { @@ -359,7 +359,7 @@ static int sc_seq_show(struct seq_file *seq, void *v) sc_show_sock_stats(seq, sc); } - spin_unlock(&o2net_debug_lock); + spin_unlock_bh(&o2net_debug_lock); return 0; } diff --git a/fs/ocfs2/cluster/quorum.c b/fs/ocfs2/cluster/quorum.c index 189c111bc371..15d0ed9c13e5 100644 --- a/fs/ocfs2/cluster/quorum.c +++ b/fs/ocfs2/cluster/quorum.c @@ -93,7 +93,7 @@ static void o2quo_make_decision(struct work_struct *work) int lowest_hb, lowest_reachable = 0, fence = 0; struct o2quo_state *qs = &o2quo_state; - spin_lock(&qs->qs_lock); + spin_lock_bh(&qs->qs_lock); lowest_hb = find_first_bit(qs->qs_hb_bm, O2NM_MAX_NODES); if (lowest_hb != O2NM_MAX_NODES) @@ -146,14 +146,14 @@ static void o2quo_make_decision(struct work_struct *work) out: if (fence) { - spin_unlock(&qs->qs_lock); + spin_unlock_bh(&qs->qs_lock); o2quo_fence_self(); } else { mlog(ML_NOTICE, "not fencing this node, heartbeating: %d, " "connected: %d, lowest: %d (%sreachable)\n", qs->qs_heartbeating, qs->qs_connected, lowest_hb, lowest_reachable ? "" : "un"); - spin_unlock(&qs->qs_lock); + spin_unlock_bh(&qs->qs_lock); } @@ -196,7 +196,7 @@ void o2quo_hb_up(u8 node) { struct o2quo_state *qs = &o2quo_state; - spin_lock(&qs->qs_lock); + spin_lock_bh(&qs->qs_lock); qs->qs_heartbeating++; mlog_bug_on_msg(qs->qs_heartbeating == O2NM_MAX_NODES, @@ -211,7 +211,7 @@ void o2quo_hb_up(u8 node) else o2quo_clear_hold(qs, node); - spin_unlock(&qs->qs_lock); + spin_unlock_bh(&qs->qs_lock); } /* hb going down releases any holds we might have had due to this node from @@ -220,7 +220,7 @@ void o2quo_hb_down(u8 node) { struct o2quo_state *qs = &o2quo_state; - spin_lock(&qs->qs_lock); + spin_lock_bh(&qs->qs_lock); qs->qs_heartbeating--; mlog_bug_on_msg(qs->qs_heartbeating < 0, @@ -233,7 +233,7 @@ void o2quo_hb_down(u8 node) o2quo_clear_hold(qs, node); - spin_unlock(&qs->qs_lock); + spin_unlock_bh(&qs->qs_lock); } /* this tells us that we've decided that the node is still heartbeating @@ -245,14 +245,14 @@ void o2quo_hb_still_up(u8 node) { struct o2quo_state *qs = &o2quo_state; - spin_lock(&qs->qs_lock); + spin_lock_bh(&qs->qs_lock); mlog(0, "node %u\n", node); qs->qs_pending = 1; o2quo_clear_hold(qs, node); - spin_unlock(&qs->qs_lock); + spin_unlock_bh(&qs->qs_lock); } /* This is analogous to hb_up. as a node's connection comes up we delay the @@ -264,7 +264,7 @@ void o2quo_conn_up(u8 node) { struct o2quo_state *qs = &o2quo_state; - spin_lock(&qs->qs_lock); + spin_lock_bh(&qs->qs_lock); qs->qs_connected++; mlog_bug_on_msg(qs->qs_connected == O2NM_MAX_NODES, @@ -279,7 +279,7 @@ void o2quo_conn_up(u8 node) else o2quo_clear_hold(qs, node); - spin_unlock(&qs->qs_lock); + spin_unlock_bh(&qs->qs_lock); } /* we've decided that we won't ever be connecting to the node again. if it's @@ -290,7 +290,7 @@ void o2quo_conn_err(u8 node) { struct o2quo_state *qs = &o2quo_state; - spin_lock(&qs->qs_lock); + spin_lock_bh(&qs->qs_lock); if (test_bit(node, qs->qs_conn_bm)) { qs->qs_connected--; @@ -307,7 +307,7 @@ void o2quo_conn_err(u8 node) mlog(0, "node %u, %d total\n", node, qs->qs_connected); - spin_unlock(&qs->qs_lock); + spin_unlock_bh(&qs->qs_lock); } void o2quo_init(void) diff --git a/fs/ocfs2/dir.c b/fs/ocfs2/dir.c index 694471fc46b8..8b123d543e6e 100644 --- a/fs/ocfs2/dir.c +++ b/fs/ocfs2/dir.c @@ -1658,7 +1658,7 @@ int __ocfs2_add_entry(handle_t *handle, offset, ocfs2_dir_trailer_blk_off(dir->i_sb)); if (ocfs2_dirent_would_fit(de, rec_len)) { - dir->i_mtime = dir->i_ctime = current_time(dir); + dir->i_mtime = inode_set_ctime_current(dir); retval = ocfs2_mark_inode_dirty(handle, dir, parent_fe_bh); if (retval < 0) { mlog_errno(retval); @@ -2962,11 +2962,11 @@ static int ocfs2_expand_inline_dir(struct inode *dir, struct buffer_head *di_bh, ocfs2_dinode_new_extent_list(dir, di); i_size_write(dir, sb->s_blocksize); - dir->i_mtime = dir->i_ctime = current_time(dir); + dir->i_mtime = inode_set_ctime_current(dir); di->i_size = cpu_to_le64(sb->s_blocksize); - di->i_ctime = di->i_mtime = cpu_to_le64(dir->i_ctime.tv_sec); - di->i_ctime_nsec = di->i_mtime_nsec = cpu_to_le32(dir->i_ctime.tv_nsec); + di->i_ctime = di->i_mtime = cpu_to_le64(inode_get_ctime(dir).tv_sec); + di->i_ctime_nsec = di->i_mtime_nsec = cpu_to_le32(inode_get_ctime(dir).tv_nsec); ocfs2_update_inode_fsync_trans(handle, dir, 1); /* diff --git a/fs/ocfs2/dlmfs/dlmfs.c b/fs/ocfs2/dlmfs/dlmfs.c index ba26c5567cff..81265123ce6c 100644 --- a/fs/ocfs2/dlmfs/dlmfs.c +++ b/fs/ocfs2/dlmfs/dlmfs.c @@ -337,7 +337,7 @@ static struct inode *dlmfs_get_root_inode(struct super_block *sb) if (inode) { inode->i_ino = get_next_ino(); inode_init_owner(&nop_mnt_idmap, inode, NULL, mode); - inode->i_atime = inode->i_mtime = inode->i_ctime = current_time(inode); + inode->i_atime = inode->i_mtime = inode_set_ctime_current(inode); inc_nlink(inode); inode->i_fop = &simple_dir_operations; @@ -360,7 +360,7 @@ static struct inode *dlmfs_get_inode(struct inode *parent, inode->i_ino = get_next_ino(); inode_init_owner(&nop_mnt_idmap, inode, parent, mode); - inode->i_atime = inode->i_mtime = inode->i_ctime = current_time(inode); + inode->i_atime = inode->i_mtime = inode_set_ctime_current(inode); ip = DLMFS_I(inode); ip->ip_conn = DLMFS_I(parent)->ip_conn; diff --git a/fs/ocfs2/dlmglue.c b/fs/ocfs2/dlmglue.c index c28bc983a7b1..c3e2961ee5db 100644 --- a/fs/ocfs2/dlmglue.c +++ b/fs/ocfs2/dlmglue.c @@ -2162,6 +2162,7 @@ static void __ocfs2_stuff_meta_lvb(struct inode *inode) struct ocfs2_inode_info *oi = OCFS2_I(inode); struct ocfs2_lock_res *lockres = &oi->ip_inode_lockres; struct ocfs2_meta_lvb *lvb; + struct timespec64 ctime = inode_get_ctime(inode); lvb = ocfs2_dlm_lvb(&lockres->l_lksb); @@ -2185,7 +2186,7 @@ static void __ocfs2_stuff_meta_lvb(struct inode *inode) lvb->lvb_iatime_packed = cpu_to_be64(ocfs2_pack_timespec(&inode->i_atime)); lvb->lvb_ictime_packed = - cpu_to_be64(ocfs2_pack_timespec(&inode->i_ctime)); + cpu_to_be64(ocfs2_pack_timespec(&ctime)); lvb->lvb_imtime_packed = cpu_to_be64(ocfs2_pack_timespec(&inode->i_mtime)); lvb->lvb_iattr = cpu_to_be32(oi->ip_attr); @@ -2208,6 +2209,7 @@ static int ocfs2_refresh_inode_from_lvb(struct inode *inode) struct ocfs2_inode_info *oi = OCFS2_I(inode); struct ocfs2_lock_res *lockres = &oi->ip_inode_lockres; struct ocfs2_meta_lvb *lvb; + struct timespec64 ctime; mlog_meta_lvb(0, lockres); @@ -2238,8 +2240,9 @@ static int ocfs2_refresh_inode_from_lvb(struct inode *inode) be64_to_cpu(lvb->lvb_iatime_packed)); ocfs2_unpack_timespec(&inode->i_mtime, be64_to_cpu(lvb->lvb_imtime_packed)); - ocfs2_unpack_timespec(&inode->i_ctime, + ocfs2_unpack_timespec(&ctime, be64_to_cpu(lvb->lvb_ictime_packed)); + inode_set_ctime_to_ts(inode, ctime); spin_unlock(&oi->ip_lock); return 0; } diff --git a/fs/ocfs2/file.c b/fs/ocfs2/file.c index 9e417cd4fd16..c45596c25c66 100644 --- a/fs/ocfs2/file.c +++ b/fs/ocfs2/file.c @@ -232,8 +232,10 @@ int ocfs2_should_update_atime(struct inode *inode, return 0; if (vfsmnt->mnt_flags & MNT_RELATIME) { + struct timespec64 ctime = inode_get_ctime(inode); + if ((timespec64_compare(&inode->i_atime, &inode->i_mtime) <= 0) || - (timespec64_compare(&inode->i_atime, &inode->i_ctime) <= 0)) + (timespec64_compare(&inode->i_atime, &ctime) <= 0)) return 1; return 0; @@ -294,7 +296,7 @@ int ocfs2_set_inode_size(handle_t *handle, i_size_write(inode, new_i_size); inode->i_blocks = ocfs2_inode_sector_count(inode); - inode->i_ctime = inode->i_mtime = current_time(inode); + inode->i_mtime = inode_set_ctime_current(inode); status = ocfs2_mark_inode_dirty(handle, inode, fe_bh); if (status < 0) { @@ -415,12 +417,12 @@ static int ocfs2_orphan_for_truncate(struct ocfs2_super *osb, } i_size_write(inode, new_i_size); - inode->i_ctime = inode->i_mtime = current_time(inode); + inode->i_mtime = inode_set_ctime_current(inode); di = (struct ocfs2_dinode *) fe_bh->b_data; di->i_size = cpu_to_le64(new_i_size); - di->i_ctime = di->i_mtime = cpu_to_le64(inode->i_ctime.tv_sec); - di->i_ctime_nsec = di->i_mtime_nsec = cpu_to_le32(inode->i_ctime.tv_nsec); + di->i_ctime = di->i_mtime = cpu_to_le64(inode_get_ctime(inode).tv_sec); + di->i_ctime_nsec = di->i_mtime_nsec = cpu_to_le32(inode_get_ctime(inode).tv_nsec); ocfs2_update_inode_fsync_trans(handle, inode, 0); ocfs2_journal_dirty(handle, fe_bh); @@ -819,7 +821,7 @@ static int ocfs2_write_zero_page(struct inode *inode, u64 abs_from, i_size_write(inode, abs_to); inode->i_blocks = ocfs2_inode_sector_count(inode); di->i_size = cpu_to_le64((u64)i_size_read(inode)); - inode->i_mtime = inode->i_ctime = current_time(inode); + inode->i_mtime = inode_set_ctime_current(inode); di->i_mtime = di->i_ctime = cpu_to_le64(inode->i_mtime.tv_sec); di->i_ctime_nsec = cpu_to_le32(inode->i_mtime.tv_nsec); di->i_mtime_nsec = di->i_ctime_nsec; @@ -1312,7 +1314,7 @@ int ocfs2_getattr(struct mnt_idmap *idmap, const struct path *path, goto bail; } - generic_fillattr(&nop_mnt_idmap, inode, stat); + generic_fillattr(&nop_mnt_idmap, request_mask, inode, stat); /* * If there is inline data in the inode, the inode will normally not * have data blocks allocated (it may have an external xattr block). @@ -2038,7 +2040,7 @@ static int __ocfs2_change_file_space(struct file *file, struct inode *inode, goto out_inode_unlock; } - inode->i_ctime = inode->i_mtime = current_time(inode); + inode->i_mtime = inode_set_ctime_current(inode); ret = ocfs2_mark_inode_dirty(handle, inode, di_bh); if (ret < 0) mlog_errno(ret); @@ -2788,10 +2790,11 @@ const struct file_operations ocfs2_fops = { .remap_file_range = ocfs2_remap_file_range, }; +WRAP_DIR_ITER(ocfs2_readdir) // FIXME! const struct file_operations ocfs2_dops = { .llseek = generic_file_llseek, .read = generic_read_dir, - .iterate = ocfs2_readdir, + .iterate_shared = shared_ocfs2_readdir, .fsync = ocfs2_sync_file, .release = ocfs2_dir_release, .open = ocfs2_dir_open, @@ -2837,7 +2840,7 @@ const struct file_operations ocfs2_fops_no_plocks = { const struct file_operations ocfs2_dops_no_plocks = { .llseek = generic_file_llseek, .read = generic_read_dir, - .iterate = ocfs2_readdir, + .iterate_shared = shared_ocfs2_readdir, .fsync = ocfs2_sync_file, .release = ocfs2_dir_release, .open = ocfs2_dir_open, diff --git a/fs/ocfs2/inode.c b/fs/ocfs2/inode.c index bb116c39b581..e8771600b930 100644 --- a/fs/ocfs2/inode.c +++ b/fs/ocfs2/inode.c @@ -306,8 +306,8 @@ void ocfs2_populate_inode(struct inode *inode, struct ocfs2_dinode *fe, inode->i_atime.tv_nsec = le32_to_cpu(fe->i_atime_nsec); inode->i_mtime.tv_sec = le64_to_cpu(fe->i_mtime); inode->i_mtime.tv_nsec = le32_to_cpu(fe->i_mtime_nsec); - inode->i_ctime.tv_sec = le64_to_cpu(fe->i_ctime); - inode->i_ctime.tv_nsec = le32_to_cpu(fe->i_ctime_nsec); + inode_set_ctime(inode, le64_to_cpu(fe->i_ctime), + le32_to_cpu(fe->i_ctime_nsec)); if (OCFS2_I(inode)->ip_blkno != le64_to_cpu(fe->i_blkno)) mlog(ML_ERROR, @@ -1314,8 +1314,8 @@ int ocfs2_mark_inode_dirty(handle_t *handle, fe->i_mode = cpu_to_le16(inode->i_mode); fe->i_atime = cpu_to_le64(inode->i_atime.tv_sec); fe->i_atime_nsec = cpu_to_le32(inode->i_atime.tv_nsec); - fe->i_ctime = cpu_to_le64(inode->i_ctime.tv_sec); - fe->i_ctime_nsec = cpu_to_le32(inode->i_ctime.tv_nsec); + fe->i_ctime = cpu_to_le64(inode_get_ctime(inode).tv_sec); + fe->i_ctime_nsec = cpu_to_le32(inode_get_ctime(inode).tv_nsec); fe->i_mtime = cpu_to_le64(inode->i_mtime.tv_sec); fe->i_mtime_nsec = cpu_to_le32(inode->i_mtime.tv_nsec); @@ -1352,8 +1352,8 @@ void ocfs2_refresh_inode(struct inode *inode, inode->i_atime.tv_nsec = le32_to_cpu(fe->i_atime_nsec); inode->i_mtime.tv_sec = le64_to_cpu(fe->i_mtime); inode->i_mtime.tv_nsec = le32_to_cpu(fe->i_mtime_nsec); - inode->i_ctime.tv_sec = le64_to_cpu(fe->i_ctime); - inode->i_ctime.tv_nsec = le32_to_cpu(fe->i_ctime_nsec); + inode_set_ctime(inode, le64_to_cpu(fe->i_ctime), + le32_to_cpu(fe->i_ctime_nsec)); spin_unlock(&OCFS2_I(inode)->ip_lock); } diff --git a/fs/ocfs2/journal.c b/fs/ocfs2/journal.c index 25d8072ccfce..ce215565d061 100644 --- a/fs/ocfs2/journal.c +++ b/fs/ocfs2/journal.c @@ -114,9 +114,9 @@ int ocfs2_compute_replay_slots(struct ocfs2_super *osb) if (osb->replay_map) return 0; - replay_map = kzalloc(sizeof(struct ocfs2_replay_map) + - (osb->max_slots * sizeof(char)), GFP_KERNEL); - + replay_map = kzalloc(struct_size(replay_map, rm_replay_slots, + osb->max_slots), + GFP_KERNEL); if (!replay_map) { mlog_errno(-ENOMEM); return -ENOMEM; @@ -178,16 +178,13 @@ int ocfs2_recovery_init(struct ocfs2_super *osb) osb->recovery_thread_task = NULL; init_waitqueue_head(&osb->recovery_event); - rm = kzalloc(sizeof(struct ocfs2_recovery_map) + - osb->max_slots * sizeof(unsigned int), + rm = kzalloc(struct_size(rm, rm_entries, osb->max_slots), GFP_KERNEL); if (!rm) { mlog_errno(-ENOMEM); return -ENOMEM; } - rm->rm_entries = (unsigned int *)((char *)rm + - sizeof(struct ocfs2_recovery_map)); osb->recovery_map = rm; return 0; @@ -557,7 +554,7 @@ static void ocfs2_abort_trigger(struct jbd2_buffer_trigger_type *triggers, (unsigned long)bh, (unsigned long long)bh->b_blocknr); - ocfs2_error(bh->b_bdev->bd_super, + ocfs2_error(bh->b_assoc_map->host->i_sb, "JBD2 has aborted our journal, ocfs2 cannot continue\n"); } @@ -780,14 +777,14 @@ void ocfs2_journal_dirty(handle_t *handle, struct buffer_head *bh) mlog_errno(status); if (!is_handle_aborted(handle)) { journal_t *journal = handle->h_transaction->t_journal; - struct super_block *sb = bh->b_bdev->bd_super; mlog(ML_ERROR, "jbd2_journal_dirty_metadata failed. " "Aborting transaction and journal.\n"); handle->h_err = status; jbd2_journal_abort_handle(handle); jbd2_journal_abort(journal, status); - ocfs2_abort(sb, "Journal already aborted.\n"); + ocfs2_abort(bh->b_assoc_map->host->i_sb, + "Journal already aborted.\n"); } } } @@ -911,9 +908,9 @@ int ocfs2_journal_init(struct ocfs2_super *osb, int *dirty) /* call the kernels journal init function now */ j_journal = jbd2_journal_init_inode(inode); - if (j_journal == NULL) { + if (IS_ERR(j_journal)) { mlog(ML_ERROR, "Linux journal layer error\n"); - status = -EINVAL; + status = PTR_ERR(j_journal); goto done; } @@ -1687,9 +1684,9 @@ static int ocfs2_replay_journal(struct ocfs2_super *osb, } journal = jbd2_journal_init_inode(inode); - if (journal == NULL) { + if (IS_ERR(journal)) { mlog(ML_ERROR, "Linux journal layer error\n"); - status = -EIO; + status = PTR_ERR(journal); goto done; } diff --git a/fs/ocfs2/journal.h b/fs/ocfs2/journal.h index 41c382f68529..41c9fe7e62f9 100644 --- a/fs/ocfs2/journal.h +++ b/fs/ocfs2/journal.h @@ -29,7 +29,7 @@ struct ocfs2_dinode; struct ocfs2_recovery_map { unsigned int rm_used; - unsigned int *rm_entries; + unsigned int rm_entries[]; }; diff --git a/fs/ocfs2/move_extents.c b/fs/ocfs2/move_extents.c index b1e32ec4a9d4..05d67968a3a9 100644 --- a/fs/ocfs2/move_extents.c +++ b/fs/ocfs2/move_extents.c @@ -950,9 +950,9 @@ static int ocfs2_move_extents(struct ocfs2_move_extents_context *context) } di = (struct ocfs2_dinode *)di_bh->b_data; - inode->i_ctime = current_time(inode); - di->i_ctime = cpu_to_le64(inode->i_ctime.tv_sec); - di->i_ctime_nsec = cpu_to_le32(inode->i_ctime.tv_nsec); + inode_set_ctime_current(inode); + di->i_ctime = cpu_to_le64(inode_get_ctime(inode).tv_sec); + di->i_ctime_nsec = cpu_to_le32(inode_get_ctime(inode).tv_nsec); ocfs2_update_inode_fsync_trans(handle, inode, 0); ocfs2_journal_dirty(handle, di_bh); diff --git a/fs/ocfs2/namei.c b/fs/ocfs2/namei.c index 17c52225b87d..5cd6d7771cea 100644 --- a/fs/ocfs2/namei.c +++ b/fs/ocfs2/namei.c @@ -793,10 +793,10 @@ static int ocfs2_link(struct dentry *old_dentry, } inc_nlink(inode); - inode->i_ctime = current_time(inode); + inode_set_ctime_current(inode); ocfs2_set_links_count(fe, inode->i_nlink); - fe->i_ctime = cpu_to_le64(inode->i_ctime.tv_sec); - fe->i_ctime_nsec = cpu_to_le32(inode->i_ctime.tv_nsec); + fe->i_ctime = cpu_to_le64(inode_get_ctime(inode).tv_sec); + fe->i_ctime_nsec = cpu_to_le32(inode_get_ctime(inode).tv_nsec); ocfs2_journal_dirty(handle, fe_bh); err = ocfs2_add_entry(handle, dentry, inode, @@ -995,7 +995,7 @@ static int ocfs2_unlink(struct inode *dir, ocfs2_set_links_count(fe, inode->i_nlink); ocfs2_journal_dirty(handle, fe_bh); - dir->i_ctime = dir->i_mtime = current_time(dir); + dir->i_mtime = inode_set_ctime_current(dir); if (S_ISDIR(inode->i_mode)) drop_nlink(dir); @@ -1535,9 +1535,13 @@ static int ocfs2_rename(struct mnt_idmap *idmap, status = ocfs2_add_entry(handle, new_dentry, old_inode, OCFS2_I(old_inode)->ip_blkno, new_dir_bh, &target_insert); + if (status < 0) { + mlog_errno(status); + goto bail; + } } - old_inode->i_ctime = current_time(old_inode); + inode_set_ctime_current(old_inode); mark_inode_dirty(old_inode); status = ocfs2_journal_access_di(handle, INODE_CACHE(old_inode), @@ -1546,8 +1550,8 @@ static int ocfs2_rename(struct mnt_idmap *idmap, if (status >= 0) { old_di = (struct ocfs2_dinode *) old_inode_bh->b_data; - old_di->i_ctime = cpu_to_le64(old_inode->i_ctime.tv_sec); - old_di->i_ctime_nsec = cpu_to_le32(old_inode->i_ctime.tv_nsec); + old_di->i_ctime = cpu_to_le64(inode_get_ctime(old_inode).tv_sec); + old_di->i_ctime_nsec = cpu_to_le32(inode_get_ctime(old_inode).tv_nsec); ocfs2_journal_dirty(handle, old_inode_bh); } else mlog_errno(status); @@ -1586,9 +1590,9 @@ static int ocfs2_rename(struct mnt_idmap *idmap, if (new_inode) { drop_nlink(new_inode); - new_inode->i_ctime = current_time(new_inode); + inode_set_ctime_current(new_inode); } - old_dir->i_ctime = old_dir->i_mtime = current_time(old_dir); + old_dir->i_mtime = inode_set_ctime_current(old_dir); if (update_dot_dot) { status = ocfs2_update_entry(old_inode, handle, @@ -1610,7 +1614,8 @@ static int ocfs2_rename(struct mnt_idmap *idmap, if (old_dir != new_dir) { /* Keep the same times on both directories.*/ - new_dir->i_ctime = new_dir->i_mtime = old_dir->i_ctime; + new_dir->i_mtime = inode_set_ctime_to_ts(new_dir, + inode_get_ctime(old_dir)); /* * This will also pick up the i_nlink change from the diff --git a/fs/ocfs2/refcounttree.c b/fs/ocfs2/refcounttree.c index 564ab48d03ef..25c8ec3c8c3a 100644 --- a/fs/ocfs2/refcounttree.c +++ b/fs/ocfs2/refcounttree.c @@ -3750,9 +3750,9 @@ static int ocfs2_change_ctime(struct inode *inode, goto out_commit; } - inode->i_ctime = current_time(inode); - di->i_ctime = cpu_to_le64(inode->i_ctime.tv_sec); - di->i_ctime_nsec = cpu_to_le32(inode->i_ctime.tv_nsec); + inode_set_ctime_current(inode); + di->i_ctime = cpu_to_le64(inode_get_ctime(inode).tv_sec); + di->i_ctime_nsec = cpu_to_le32(inode_get_ctime(inode).tv_nsec); ocfs2_journal_dirty(handle, di_bh); @@ -4073,10 +4073,10 @@ static int ocfs2_complete_reflink(struct inode *s_inode, * we want mtime to appear identical to the source and * update ctime. */ - t_inode->i_ctime = current_time(t_inode); + inode_set_ctime_current(t_inode); - di->i_ctime = cpu_to_le64(t_inode->i_ctime.tv_sec); - di->i_ctime_nsec = cpu_to_le32(t_inode->i_ctime.tv_nsec); + di->i_ctime = cpu_to_le64(inode_get_ctime(t_inode).tv_sec); + di->i_ctime_nsec = cpu_to_le32(inode_get_ctime(t_inode).tv_nsec); t_inode->i_mtime = s_inode->i_mtime; di->i_mtime = s_di->i_mtime; @@ -4456,7 +4456,7 @@ int ocfs2_reflink_update_dest(struct inode *dest, if (newlen > i_size_read(dest)) i_size_write(dest, newlen); spin_unlock(&OCFS2_I(dest)->ip_lock); - dest->i_ctime = dest->i_mtime = current_time(dest); + dest->i_mtime = inode_set_ctime_current(dest); ret = ocfs2_mark_inode_dirty(handle, dest, d_bh); if (ret) { diff --git a/fs/ocfs2/stack_user.c b/fs/ocfs2/stack_user.c index 05d4414d0c33..9b76ee66aeb2 100644 --- a/fs/ocfs2/stack_user.c +++ b/fs/ocfs2/stack_user.c @@ -738,18 +738,11 @@ static int user_plock(struct ocfs2_cluster_connection *conn, * * Internally, fs/dlm will pass these to a misc device, which * a userspace daemon will read and write to. - * - * For now, cancel requests (which happen internally only), - * are turned into unlocks. Most of this function taken from - * gfs2_lock. */ - if (cmd == F_CANCELLK) { - cmd = F_SETLK; - fl->fl_type = F_UNLCK; - } - - if (IS_GETLK(cmd)) + if (cmd == F_CANCELLK) + return dlm_posix_cancel(conn->cc_lockspace, ino, file, fl); + else if (IS_GETLK(cmd)) return dlm_posix_get(conn->cc_lockspace, ino, file, fl); else if (fl->fl_type == F_UNLCK) return dlm_posix_unlock(conn->cc_lockspace, ino, file, fl); diff --git a/fs/ocfs2/super.c b/fs/ocfs2/super.c index 988d1c076861..6b906424902b 100644 --- a/fs/ocfs2/super.c +++ b/fs/ocfs2/super.c @@ -1517,8 +1517,7 @@ static int ocfs2_show_options(struct seq_file *s, struct dentry *root) seq_printf(s, ",localflocks,"); if (osb->osb_cluster_stack[0]) - seq_show_option_n(s, "cluster_stack", osb->osb_cluster_stack, - OCFS2_STACK_LABEL_LEN); + seq_show_option(s, "cluster_stack", osb->osb_cluster_stack); if (opts & OCFS2_MOUNT_USRQUOTA) seq_printf(s, ",usrquota"); if (opts & OCFS2_MOUNT_GRPQUOTA) diff --git a/fs/ocfs2/xattr.c b/fs/ocfs2/xattr.c index 4ac77ff6e676..6510ad783c91 100644 --- a/fs/ocfs2/xattr.c +++ b/fs/ocfs2/xattr.c @@ -3421,9 +3421,9 @@ static int __ocfs2_xattr_set_handle(struct inode *inode, goto out; } - inode->i_ctime = current_time(inode); - di->i_ctime = cpu_to_le64(inode->i_ctime.tv_sec); - di->i_ctime_nsec = cpu_to_le32(inode->i_ctime.tv_nsec); + inode_set_ctime_current(inode); + di->i_ctime = cpu_to_le64(inode_get_ctime(inode).tv_sec); + di->i_ctime_nsec = cpu_to_le32(inode_get_ctime(inode).tv_nsec); ocfs2_journal_dirty(ctxt->handle, xis->inode_bh); } out: diff --git a/fs/omfs/Kconfig b/fs/omfs/Kconfig index 42b2ec35a05b..8470f6c3e64e 100644 --- a/fs/omfs/Kconfig +++ b/fs/omfs/Kconfig @@ -2,6 +2,7 @@ config OMFS_FS tristate "SonicBlue Optimized MPEG File System support" depends on BLOCK + select BUFFER_HEAD select CRC_ITU_T help This is the proprietary file system used by the Rio Karma music diff --git a/fs/omfs/dir.c b/fs/omfs/dir.c index 82cf7e9a665f..6bda275826d6 100644 --- a/fs/omfs/dir.c +++ b/fs/omfs/dir.c @@ -143,7 +143,7 @@ static int omfs_add_link(struct dentry *dentry, struct inode *inode) mark_buffer_dirty(bh); brelse(bh); - dir->i_ctime = current_time(dir); + inode_set_ctime_current(dir); /* mark affected inodes dirty to rebuild checksums */ mark_inode_dirty(dir); @@ -399,7 +399,7 @@ static int omfs_rename(struct mnt_idmap *idmap, struct inode *old_dir, if (err) goto out; - old_inode->i_ctime = current_time(old_inode); + inode_set_ctime_current(old_inode); mark_inode_dirty(old_inode); out: return err; diff --git a/fs/omfs/file.c b/fs/omfs/file.c index de8f57ee39ec..6b580b9da8e3 100644 --- a/fs/omfs/file.c +++ b/fs/omfs/file.c @@ -14,7 +14,7 @@ static u32 omfs_max_extents(struct omfs_sb_info *sbi, int offset) { return (sbi->s_sys_blocksize - offset - sizeof(struct omfs_extent)) / - sizeof(struct omfs_extent_entry) + 1; + sizeof(struct omfs_extent_entry); } void omfs_make_empty_table(struct buffer_head *bh, int offset) @@ -24,8 +24,8 @@ void omfs_make_empty_table(struct buffer_head *bh, int offset) oe->e_next = ~cpu_to_be64(0ULL); oe->e_extent_count = cpu_to_be32(1), oe->e_fill = cpu_to_be32(0x22), - oe->e_entry.e_cluster = ~cpu_to_be64(0ULL); - oe->e_entry.e_blocks = ~cpu_to_be64(0ULL); + oe->e_entry[0].e_cluster = ~cpu_to_be64(0ULL); + oe->e_entry[0].e_blocks = ~cpu_to_be64(0ULL); } int omfs_shrink_inode(struct inode *inode) @@ -68,7 +68,7 @@ int omfs_shrink_inode(struct inode *inode) last = next; next = be64_to_cpu(oe->e_next); - entry = &oe->e_entry; + entry = oe->e_entry; /* ignore last entry as it is the terminator */ for (; extent_count > 1; extent_count--) { @@ -117,7 +117,7 @@ static int omfs_grow_extent(struct inode *inode, struct omfs_extent *oe, u64 *ret_block) { struct omfs_extent_entry *terminator; - struct omfs_extent_entry *entry = &oe->e_entry; + struct omfs_extent_entry *entry = oe->e_entry; struct omfs_sb_info *sbi = OMFS_SB(inode->i_sb); u32 extent_count = be32_to_cpu(oe->e_extent_count); u64 new_block = 0; @@ -245,7 +245,7 @@ static int omfs_get_block(struct inode *inode, sector_t block, extent_count = be32_to_cpu(oe->e_extent_count); next = be64_to_cpu(oe->e_next); - entry = &oe->e_entry; + entry = oe->e_entry; if (extent_count > max_extents) goto out_brelse; diff --git a/fs/omfs/inode.c b/fs/omfs/inode.c index c4c79e07efc7..2f8c1882f45c 100644 --- a/fs/omfs/inode.c +++ b/fs/omfs/inode.c @@ -51,7 +51,7 @@ struct inode *omfs_new_inode(struct inode *dir, umode_t mode) inode_init_owner(&nop_mnt_idmap, inode, NULL, mode); inode->i_mapping->a_ops = &omfs_aops; - inode->i_atime = inode->i_mtime = inode->i_ctime = current_time(inode); + inode->i_atime = inode->i_mtime = inode_set_ctime_current(inode); switch (mode & S_IFMT) { case S_IFDIR: inode->i_op = &omfs_dir_inops; @@ -134,8 +134,8 @@ static int __omfs_write_inode(struct inode *inode, int wait) oi->i_head.h_magic = OMFS_IMAGIC; oi->i_size = cpu_to_be64(inode->i_size); - ctime = inode->i_ctime.tv_sec * 1000LL + - ((inode->i_ctime.tv_nsec + 999)/1000); + ctime = inode_get_ctime(inode).tv_sec * 1000LL + + ((inode_get_ctime(inode).tv_nsec + 999)/1000); oi->i_ctime = cpu_to_be64(ctime); omfs_update_checksums(oi); @@ -232,10 +232,9 @@ struct inode *omfs_iget(struct super_block *sb, ino_t ino) inode->i_atime.tv_sec = ctime; inode->i_mtime.tv_sec = ctime; - inode->i_ctime.tv_sec = ctime; + inode_set_ctime(inode, ctime, nsecs); inode->i_atime.tv_nsec = nsecs; inode->i_mtime.tv_nsec = nsecs; - inode->i_ctime.tv_nsec = nsecs; inode->i_mapping->a_ops = &omfs_aops; diff --git a/fs/omfs/omfs_fs.h b/fs/omfs/omfs_fs.h index caecb3d5a344..1ff6b9e41297 100644 --- a/fs/omfs/omfs_fs.h +++ b/fs/omfs/omfs_fs.h @@ -77,7 +77,7 @@ struct omfs_extent { __be64 e_next; /* next extent table location */ __be32 e_extent_count; /* total # extents in this table */ __be32 e_fill; - struct omfs_extent_entry e_entry; /* start of extent entries */ + struct omfs_extent_entry e_entry[]; /* start of extent entries */ }; #endif diff --git a/fs/open.c b/fs/open.c index 0c55c8e7f837..98f6601fbac6 100644 --- a/fs/open.c +++ b/fs/open.c @@ -671,11 +671,20 @@ SYSCALL_DEFINE2(fchmod, unsigned int, fd, umode_t, mode) return err; } -static int do_fchmodat(int dfd, const char __user *filename, umode_t mode) +static int do_fchmodat(int dfd, const char __user *filename, umode_t mode, + unsigned int flags) { struct path path; int error; - unsigned int lookup_flags = LOOKUP_FOLLOW; + unsigned int lookup_flags; + + if (unlikely(flags & ~(AT_SYMLINK_NOFOLLOW | AT_EMPTY_PATH))) + return -EINVAL; + + lookup_flags = (flags & AT_SYMLINK_NOFOLLOW) ? 0 : LOOKUP_FOLLOW; + if (flags & AT_EMPTY_PATH) + lookup_flags |= LOOKUP_EMPTY; + retry: error = user_path_at(dfd, filename, lookup_flags, &path); if (!error) { @@ -689,15 +698,21 @@ retry: return error; } +SYSCALL_DEFINE4(fchmodat2, int, dfd, const char __user *, filename, + umode_t, mode, unsigned int, flags) +{ + return do_fchmodat(dfd, filename, mode, flags); +} + SYSCALL_DEFINE3(fchmodat, int, dfd, const char __user *, filename, umode_t, mode) { - return do_fchmodat(dfd, filename, mode); + return do_fchmodat(dfd, filename, mode, 0); } SYSCALL_DEFINE2(chmod, const char __user *, filename, umode_t, mode) { - return do_fchmodat(AT_FDCWD, filename, mode); + return do_fchmodat(AT_FDCWD, filename, mode, 0); } /* @@ -1150,7 +1165,7 @@ EXPORT_SYMBOL_GPL(kernel_file_open); * backing_file_open - open a backing file for kernel internal use * @path: path of the file to open * @flags: open flags - * @path: path of the backing file + * @real_path: path of the backing file * @cred: credentials for open * * Open a backing file for a stackable filesystem (e.g., overlayfs). @@ -1322,7 +1337,7 @@ inline int build_open_flags(const struct open_how *how, struct open_flags *op) lookup_flags |= LOOKUP_IN_ROOT; if (how->resolve & RESOLVE_CACHED) { /* Don't bother even trying for create/truncate/tmpfile open */ - if (flags & (O_TRUNC | O_CREAT | O_TMPFILE)) + if (flags & (O_TRUNC | O_CREAT | __O_TMPFILE)) return -EAGAIN; lookup_flags |= LOOKUP_CACHED; } @@ -1503,7 +1518,7 @@ SYSCALL_DEFINE2(creat, const char __user *, pathname, umode_t, mode) * "id" is the POSIX thread ID. We use the * files pointer for this.. */ -int filp_close(struct file *filp, fl_owner_t id) +static int filp_flush(struct file *filp, fl_owner_t id) { int retval = 0; @@ -1520,10 +1535,18 @@ int filp_close(struct file *filp, fl_owner_t id) dnotify_flush(filp, id); locks_remove_posix(filp, id); } - fput(filp); return retval; } +int filp_close(struct file *filp, fl_owner_t id) +{ + int retval; + + retval = filp_flush(filp, id); + fput(filp); + + return retval; +} EXPORT_SYMBOL(filp_close); /* @@ -1533,7 +1556,20 @@ EXPORT_SYMBOL(filp_close); */ SYSCALL_DEFINE1(close, unsigned int, fd) { - int retval = close_fd(fd); + int retval; + struct file *file; + + file = close_fd_get_file(fd); + if (!file) + return -EBADF; + + retval = filp_flush(file, current->files); + + /* + * We're returning to user space. Don't bother + * with any delayed fput() cases. + */ + __fput_sync(file); /* can't restart close syscall because file table entry was cleared */ if (unlikely(retval == -ERESTARTSYS || @@ -1546,7 +1582,7 @@ SYSCALL_DEFINE1(close, unsigned int, fd) } /** - * close_range() - Close all file descriptors in a given range. + * sys_close_range() - Close all file descriptors in a given range. * * @fd: starting file descriptor to close * @max_fd: last file descriptor to close diff --git a/fs/openpromfs/inode.c b/fs/openpromfs/inode.c index f0b7f4d51a17..b2457cb97fa0 100644 --- a/fs/openpromfs/inode.c +++ b/fs/openpromfs/inode.c @@ -237,7 +237,7 @@ found: if (IS_ERR(inode)) return ERR_CAST(inode); if (inode->i_state & I_NEW) { - inode->i_mtime = inode->i_atime = inode->i_ctime = current_time(inode); + inode->i_mtime = inode->i_atime = inode_set_ctime_current(inode); ent_oi = OP_I(inode); ent_oi->type = ent_type; ent_oi->u = ent_data; @@ -387,8 +387,7 @@ static int openprom_fill_super(struct super_block *s, struct fs_context *fc) goto out_no_root; } - root_inode->i_mtime = root_inode->i_atime = - root_inode->i_ctime = current_time(root_inode); + root_inode->i_mtime = root_inode->i_atime = inode_set_ctime_current(root_inode); root_inode->i_op = &openprom_inode_operations; root_inode->i_fop = &openprom_operations; root_inode->i_mode = S_IFDIR | S_IRUGO | S_IXUGO; diff --git a/fs/orangefs/inode.c b/fs/orangefs/inode.c index 9014bbcc8031..085912268442 100644 --- a/fs/orangefs/inode.c +++ b/fs/orangefs/inode.c @@ -871,7 +871,7 @@ int orangefs_getattr(struct mnt_idmap *idmap, const struct path *path, ret = orangefs_inode_getattr(inode, request_mask & STATX_SIZE ? ORANGEFS_GETATTR_SIZE : 0); if (ret == 0) { - generic_fillattr(&nop_mnt_idmap, inode, stat); + generic_fillattr(&nop_mnt_idmap, request_mask, inode, stat); /* override block size reported to stat */ if (!(request_mask & STATX_SIZE)) @@ -900,12 +900,13 @@ int orangefs_permission(struct mnt_idmap *idmap, return generic_permission(&nop_mnt_idmap, inode, mask); } -int orangefs_update_time(struct inode *inode, struct timespec64 *time, int flags) +int orangefs_update_time(struct inode *inode, int flags) { struct iattr iattr; + gossip_debug(GOSSIP_INODE_DEBUG, "orangefs_update_time: %pU\n", get_khandle_from_ino(inode)); - generic_update_time(inode, time, flags); + flags = generic_update_time(inode, flags); memset(&iattr, 0, sizeof iattr); if (flags & S_ATIME) iattr.ia_valid |= ATTR_ATIME; diff --git a/fs/orangefs/namei.c b/fs/orangefs/namei.c index 77518e248cf7..c9dfd5c6a097 100644 --- a/fs/orangefs/namei.c +++ b/fs/orangefs/namei.c @@ -421,7 +421,7 @@ static int orangefs_rename(struct mnt_idmap *idmap, ret); if (new_dentry->d_inode) - new_dentry->d_inode->i_ctime = current_time(new_dentry->d_inode); + inode_set_ctime_current(d_inode(new_dentry)); op_release(new_op); return ret; diff --git a/fs/orangefs/orangefs-kernel.h b/fs/orangefs/orangefs-kernel.h index ce20d3443869..b711654ca18a 100644 --- a/fs/orangefs/orangefs-kernel.h +++ b/fs/orangefs/orangefs-kernel.h @@ -370,7 +370,7 @@ int orangefs_getattr(struct mnt_idmap *idmap, const struct path *path, int orangefs_permission(struct mnt_idmap *idmap, struct inode *inode, int mask); -int orangefs_update_time(struct inode *, struct timespec64 *, int); +int orangefs_update_time(struct inode *, int); /* * defined in xattr.c diff --git a/fs/orangefs/orangefs-utils.c b/fs/orangefs/orangefs-utils.c index 46b7dcff18ac..0a9fcfdf552f 100644 --- a/fs/orangefs/orangefs-utils.c +++ b/fs/orangefs/orangefs-utils.c @@ -361,11 +361,11 @@ again2: downcall.resp.getattr.attributes.atime; inode->i_mtime.tv_sec = (time64_t)new_op-> downcall.resp.getattr.attributes.mtime; - inode->i_ctime.tv_sec = (time64_t)new_op-> - downcall.resp.getattr.attributes.ctime; + inode_set_ctime(inode, + (time64_t)new_op->downcall.resp.getattr.attributes.ctime, + 0); inode->i_atime.tv_nsec = 0; inode->i_mtime.tv_nsec = 0; - inode->i_ctime.tv_nsec = 0; /* special case: mark the root inode as sticky */ inode->i_mode = type | (is_root_handle(inode) ? S_ISVTX : 0) | diff --git a/fs/overlayfs/Kconfig b/fs/overlayfs/Kconfig index 6708e54b0e30..fec5020c3495 100644 --- a/fs/overlayfs/Kconfig +++ b/fs/overlayfs/Kconfig @@ -124,3 +124,12 @@ config OVERLAY_FS_METACOPY that doesn't support this feature will have unexpected results. If unsure, say N. + +config OVERLAY_FS_DEBUG + bool "Overlayfs: turn on extra debugging checks" + default n + depends on OVERLAY_FS + help + Say Y here to enable extra debugging checks in overlayfs. + + If unsure, say N. diff --git a/fs/overlayfs/copy_up.c b/fs/overlayfs/copy_up.c index 568f743a5584..bae404a1bad4 100644 --- a/fs/overlayfs/copy_up.c +++ b/fs/overlayfs/copy_up.c @@ -416,7 +416,7 @@ struct ovl_fh *ovl_encode_real_fh(struct ovl_fs *ofs, struct dentry *real, if (is_upper) fh->fb.flags |= OVL_FH_FLAG_PATH_UPPER; fh->fb.len = sizeof(fh->fb) + buflen; - if (ofs->config.uuid) + if (ovl_origin_uuid(ofs)) fh->fb.uuid = *uuid; return fh; @@ -544,6 +544,7 @@ struct ovl_copy_up_ctx { bool origin; bool indexed; bool metacopy; + bool metacopy_digest; }; static int ovl_link_up(struct ovl_copy_up_ctx *c) @@ -641,8 +642,20 @@ static int ovl_copy_up_metadata(struct ovl_copy_up_ctx *c, struct dentry *temp) } if (c->metacopy) { - err = ovl_check_setxattr(ofs, temp, OVL_XATTR_METACOPY, - NULL, 0, -EOPNOTSUPP); + struct path lowerdatapath; + struct ovl_metacopy metacopy_data = OVL_METACOPY_INIT; + + ovl_path_lowerdata(c->dentry, &lowerdatapath); + if (WARN_ON_ONCE(lowerdatapath.dentry == NULL)) + return -EIO; + err = ovl_get_verity_digest(ofs, &lowerdatapath, &metacopy_data); + if (err) + return err; + + if (metacopy_data.digest_algo) + c->metacopy_digest = true; + + err = ovl_set_metacopy_xattr(ofs, temp, &metacopy_data); if (err) return err; } @@ -751,9 +764,15 @@ static int ovl_copy_up_workdir(struct ovl_copy_up_ctx *c) if (err) goto cleanup; - if (!c->metacopy) - ovl_set_upperdata(d_inode(c->dentry)); inode = d_inode(c->dentry); + if (c->metacopy_digest) + ovl_set_flag(OVL_HAS_DIGEST, inode); + else + ovl_clear_flag(OVL_HAS_DIGEST, inode); + ovl_clear_flag(OVL_VERIFIED_DIGEST, inode); + + if (!c->metacopy) + ovl_set_upperdata(inode); ovl_inode_update(inode, temp); if (S_ISDIR(inode->i_mode)) ovl_set_flag(OVL_WHITEOUTS, inode); @@ -813,6 +832,12 @@ static int ovl_copy_up_tmpfile(struct ovl_copy_up_ctx *c) if (err) goto out_fput; + if (c->metacopy_digest) + ovl_set_flag(OVL_HAS_DIGEST, d_inode(c->dentry)); + else + ovl_clear_flag(OVL_HAS_DIGEST, d_inode(c->dentry)); + ovl_clear_flag(OVL_VERIFIED_DIGEST, d_inode(c->dentry)); + if (!c->metacopy) ovl_set_upperdata(d_inode(c->dentry)); ovl_inode_update(d_inode(c->dentry), dget(temp)); @@ -907,7 +932,7 @@ out: static bool ovl_need_meta_copy_up(struct dentry *dentry, umode_t mode, int flags) { - struct ovl_fs *ofs = dentry->d_sb->s_fs_info; + struct ovl_fs *ofs = OVL_FS(dentry->d_sb); if (!ofs->config.metacopy) return false; @@ -918,6 +943,19 @@ static bool ovl_need_meta_copy_up(struct dentry *dentry, umode_t mode, if (flags && ((OPEN_FMODE(flags) & FMODE_WRITE) || (flags & O_TRUNC))) return false; + /* Fall back to full copy if no fsverity on source data and we require verity */ + if (ofs->config.verity_mode == OVL_VERITY_REQUIRE) { + struct path lowerdata; + + ovl_path_lowerdata(dentry, &lowerdata); + + if (WARN_ON_ONCE(lowerdata.dentry == NULL) || + ovl_ensure_verity_loaded(&lowerdata) || + !fsverity_active(d_inode(lowerdata.dentry))) { + return false; + } + } + return true; } @@ -984,6 +1022,8 @@ static int ovl_copy_up_meta_inode_data(struct ovl_copy_up_ctx *c) if (err) goto out_free; + ovl_clear_flag(OVL_HAS_DIGEST, d_inode(c->dentry)); + ovl_clear_flag(OVL_VERIFIED_DIGEST, d_inode(c->dentry)); ovl_set_upperdata(d_inode(c->dentry)); out_free: kfree(capability); @@ -1078,7 +1118,7 @@ static int ovl_copy_up_flags(struct dentry *dentry, int flags) * not very important to optimize this case, so do lazy lowerdata lookup * before any copy up, so we can do it before taking ovl_inode_lock(). */ - err = ovl_maybe_lookup_lowerdata(dentry); + err = ovl_verify_lowerdata(dentry); if (err) return err; diff --git a/fs/overlayfs/export.c b/fs/overlayfs/export.c index 35680b6e175b..c8c8588bd98c 100644 --- a/fs/overlayfs/export.c +++ b/fs/overlayfs/export.c @@ -174,28 +174,37 @@ static int ovl_connect_layer(struct dentry *dentry) * U = upper file handle * L = lower file handle * - * (*) Connecting an overlay dir from real lower dentry is not always + * (*) Decoding a connected overlay dir from real lower dentry is not always * possible when there are redirects in lower layers and non-indexed merge dirs. * To mitigate those case, we may copy up the lower dir ancestor before encode - * a lower dir file handle. + * of a decodable file handle for non-upper dir. * * Return 0 for upper file handle, > 0 for lower file handle or < 0 on error. */ static int ovl_check_encode_origin(struct dentry *dentry) { - struct ovl_fs *ofs = dentry->d_sb->s_fs_info; + struct ovl_fs *ofs = OVL_FS(dentry->d_sb); + bool decodable = ofs->config.nfs_export; + + /* Lower file handle for non-upper non-decodable */ + if (!ovl_dentry_upper(dentry) && !decodable) + return 0; /* Upper file handle for pure upper */ if (!ovl_dentry_lower(dentry)) return 0; /* - * Upper file handle for non-indexed upper. - * * Root is never indexed, so if there's an upper layer, encode upper for * root. */ - if (ovl_dentry_upper(dentry) && + if (dentry == dentry->d_sb->s_root) + return 0; + + /* + * Upper decodable file handle for non-indexed upper. + */ + if (ovl_dentry_upper(dentry) && decodable && !ovl_test_flag(OVL_INDEX, d_inode(dentry))) return 0; @@ -205,7 +214,7 @@ static int ovl_check_encode_origin(struct dentry *dentry) * ovl_connect_layer() will try to make origin's layer "connected" by * copying up a "connectable" ancestor. */ - if (d_is_dir(dentry) && ovl_upper_mnt(ofs)) + if (d_is_dir(dentry) && ovl_upper_mnt(ofs) && decodable) return ovl_connect_layer(dentry); /* Lower file handle for indexed and non-upper dir/non-dir */ @@ -435,7 +444,7 @@ static struct dentry *ovl_lookup_real_inode(struct super_block *sb, struct dentry *real, const struct ovl_layer *layer) { - struct ovl_fs *ofs = sb->s_fs_info; + struct ovl_fs *ofs = OVL_FS(sb); struct dentry *index = NULL; struct dentry *this = NULL; struct inode *inode; @@ -656,7 +665,7 @@ static struct dentry *ovl_get_dentry(struct super_block *sb, struct ovl_path *lowerpath, struct dentry *index) { - struct ovl_fs *ofs = sb->s_fs_info; + struct ovl_fs *ofs = OVL_FS(sb); const struct ovl_layer *layer = upper ? &ofs->layers[0] : lowerpath->layer; struct dentry *real = upper ?: (index ?: lowerpath->dentry); @@ -681,7 +690,7 @@ static struct dentry *ovl_get_dentry(struct super_block *sb, static struct dentry *ovl_upper_fh_to_d(struct super_block *sb, struct ovl_fh *fh) { - struct ovl_fs *ofs = sb->s_fs_info; + struct ovl_fs *ofs = OVL_FS(sb); struct dentry *dentry; struct dentry *upper; @@ -701,7 +710,7 @@ static struct dentry *ovl_upper_fh_to_d(struct super_block *sb, static struct dentry *ovl_lower_fh_to_d(struct super_block *sb, struct ovl_fh *fh) { - struct ovl_fs *ofs = sb->s_fs_info; + struct ovl_fs *ofs = OVL_FS(sb); struct ovl_path origin = { }; struct ovl_path *stack = &origin; struct dentry *dentry = NULL; @@ -876,3 +885,8 @@ const struct export_operations ovl_export_operations = { .get_name = ovl_get_name, .get_parent = ovl_get_parent, }; + +/* encode_fh() encodes non-decodable file handles with nfs_export=off */ +const struct export_operations ovl_export_fid_operations = { + .encode_fh = ovl_encode_fh, +}; diff --git a/fs/overlayfs/file.c b/fs/overlayfs/file.c index 21245b00722a..3b4cc633d763 100644 --- a/fs/overlayfs/file.c +++ b/fs/overlayfs/file.c @@ -115,8 +115,8 @@ static int ovl_real_fdget_meta(const struct file *file, struct fd *real, if (allow_meta) { ovl_path_real(dentry, &realpath); } else { - /* lazy lookup of lowerdata */ - err = ovl_maybe_lookup_lowerdata(dentry); + /* lazy lookup and verify of lowerdata */ + err = ovl_verify_lowerdata(dentry); if (err) return err; @@ -159,8 +159,8 @@ static int ovl_open(struct inode *inode, struct file *file) struct path realpath; int err; - /* lazy lookup of lowerdata */ - err = ovl_maybe_lookup_lowerdata(dentry); + /* lazy lookup and verify lowerdata */ + err = ovl_verify_lowerdata(dentry); if (err) return err; @@ -239,6 +239,7 @@ static loff_t ovl_llseek(struct file *file, loff_t offset, int whence) static void ovl_file_accessed(struct file *file) { struct inode *inode, *upperinode; + struct timespec64 ctime, uctime; if (file->f_flags & O_NOATIME) return; @@ -249,10 +250,12 @@ static void ovl_file_accessed(struct file *file) if (!upperinode) return; + ctime = inode_get_ctime(inode); + uctime = inode_get_ctime(upperinode); if ((!timespec64_equal(&inode->i_mtime, &upperinode->i_mtime) || - !timespec64_equal(&inode->i_ctime, &upperinode->i_ctime))) { + !timespec64_equal(&ctime, &uctime))) { inode->i_mtime = upperinode->i_mtime; - inode->i_ctime = upperinode->i_ctime; + inode_set_ctime_to_ts(inode, uctime); } touch_atime(&file->f_path); @@ -290,10 +293,7 @@ static void ovl_aio_cleanup_handler(struct ovl_aio_req *aio_req) if (iocb->ki_flags & IOCB_WRITE) { struct inode *inode = file_inode(orig_iocb->ki_filp); - /* Actually acquired in ovl_write_iter() */ - __sb_writers_acquired(file_inode(iocb->ki_filp)->i_sb, - SB_FREEZE_WRITE); - file_end_write(iocb->ki_filp); + kiocb_end_write(iocb); ovl_copyattr(inode); } @@ -409,10 +409,6 @@ static ssize_t ovl_write_iter(struct kiocb *iocb, struct iov_iter *iter) if (!aio_req) goto out; - file_start_write(real.file); - /* Pacify lockdep, same trick as done in aio_write() */ - __sb_writers_release(file_inode(real.file)->i_sb, - SB_FREEZE_WRITE); aio_req->fd = real; real.flags = 0; aio_req->orig_iocb = iocb; @@ -420,6 +416,7 @@ static ssize_t ovl_write_iter(struct kiocb *iocb, struct iov_iter *iter) aio_req->iocb.ki_flags = ifl; aio_req->iocb.ki_complete = ovl_aio_rw_complete; refcount_set(&aio_req->ref, 2); + kiocb_start_write(&aio_req->iocb); ret = vfs_iocb_iter_write(real.file, &aio_req->iocb, iter); ovl_aio_put(aio_req); if (ret != -EIOCBQUEUED) diff --git a/fs/overlayfs/inode.c b/fs/overlayfs/inode.c index a63e57447be9..83ef66644c21 100644 --- a/fs/overlayfs/inode.c +++ b/fs/overlayfs/inode.c @@ -341,7 +341,7 @@ static const char *ovl_get_link(struct dentry *dentry, bool ovl_is_private_xattr(struct super_block *sb, const char *name) { - struct ovl_fs *ofs = sb->s_fs_info; + struct ovl_fs *ofs = OVL_FS(sb); if (ofs->config.userxattr) return strncmp(name, OVL_XATTR_USER_PREFIX, @@ -693,10 +693,10 @@ int ovl_set_acl(struct mnt_idmap *idmap, struct dentry *dentry, } #endif -int ovl_update_time(struct inode *inode, struct timespec64 *ts, int flags) +int ovl_update_time(struct inode *inode, int flags) { if (flags & S_ATIME) { - struct ovl_fs *ofs = inode->i_sb->s_fs_info; + struct ovl_fs *ofs = OVL_FS(inode->i_sb); struct path upperpath = { .mnt = ovl_upper_mnt(ofs), .dentry = ovl_upperdentry_dereference(OVL_I(inode)), @@ -1291,7 +1291,7 @@ struct inode *ovl_get_trap_inode(struct super_block *sb, struct dentry *dir) static bool ovl_hash_bylower(struct super_block *sb, struct dentry *upper, struct dentry *lower, bool index) { - struct ovl_fs *ofs = sb->s_fs_info; + struct ovl_fs *ofs = OVL_FS(sb); /* No, if pure upper */ if (!lower) @@ -1311,7 +1311,7 @@ static bool ovl_hash_bylower(struct super_block *sb, struct dentry *upper, return false; /* No, if non-indexed upper with NFS export */ - if (sb->s_export_op && upper) + if (ofs->config.nfs_export && upper) return false; /* Otherwise, hash by lower inode for fsnotify */ diff --git a/fs/overlayfs/namei.c b/fs/overlayfs/namei.c index 57adf911735f..80391c687c2a 100644 --- a/fs/overlayfs/namei.c +++ b/fs/overlayfs/namei.c @@ -25,7 +25,7 @@ struct ovl_lookup_data { bool stop; bool last; char *redirect; - bool metacopy; + int metacopy; /* Referring to last redirect xattr */ bool absolute_redirect; }; @@ -171,8 +171,9 @@ struct dentry *ovl_decode_real_fh(struct ovl_fs *ofs, struct ovl_fh *fh, * layer where file handle will be decoded. * In case of uuid=off option just make sure that stored uuid is null. */ - if (ofs->config.uuid ? !uuid_equal(&fh->fb.uuid, &mnt->mnt_sb->s_uuid) : - !uuid_is_null(&fh->fb.uuid)) + if (ovl_origin_uuid(ofs) ? + !uuid_equal(&fh->fb.uuid, &mnt->mnt_sb->s_uuid) : + !uuid_is_null(&fh->fb.uuid)) return NULL; bytes = (fh->fb.len - offsetof(struct ovl_fb, fid)); @@ -270,7 +271,7 @@ static int ovl_lookup_single(struct dentry *base, struct ovl_lookup_data *d, d->stop = true; goto put_and_out; } - err = ovl_check_metacopy_xattr(OVL_FS(d->sb), &path); + err = ovl_check_metacopy_xattr(OVL_FS(d->sb), &path, NULL); if (err < 0) goto out_err; @@ -889,8 +890,58 @@ static int ovl_fix_origin(struct ovl_fs *ofs, struct dentry *dentry, return err; } +static int ovl_maybe_validate_verity(struct dentry *dentry) +{ + struct ovl_fs *ofs = OVL_FS(dentry->d_sb); + struct inode *inode = d_inode(dentry); + struct path datapath, metapath; + int err; + + if (!ofs->config.verity_mode || + !ovl_is_metacopy_dentry(dentry) || + ovl_test_flag(OVL_VERIFIED_DIGEST, inode)) + return 0; + + if (!ovl_test_flag(OVL_HAS_DIGEST, inode)) { + if (ofs->config.verity_mode == OVL_VERITY_REQUIRE) { + pr_warn_ratelimited("metacopy file '%pd' has no digest specified\n", + dentry); + return -EIO; + } + return 0; + } + + ovl_path_lowerdata(dentry, &datapath); + if (!datapath.dentry) + return -EIO; + + ovl_path_real(dentry, &metapath); + if (!metapath.dentry) + return -EIO; + + err = ovl_inode_lock_interruptible(inode); + if (err) + return err; + + if (!ovl_test_flag(OVL_VERIFIED_DIGEST, inode)) { + const struct cred *old_cred; + + old_cred = ovl_override_creds(dentry->d_sb); + + err = ovl_validate_verity(ofs, &metapath, &datapath); + if (err == 0) + ovl_set_flag(OVL_VERIFIED_DIGEST, inode); + + revert_creds(old_cred); + } + + ovl_inode_unlock(inode); + + return err; +} + /* Lazy lookup of lowerdata */ -int ovl_maybe_lookup_lowerdata(struct dentry *dentry) +static int ovl_maybe_lookup_lowerdata(struct dentry *dentry) { struct inode *inode = d_inode(dentry); const char *redirect = ovl_lowerdata_redirect(inode); @@ -935,12 +986,23 @@ out_err: goto out; } +int ovl_verify_lowerdata(struct dentry *dentry) +{ + int err; + + err = ovl_maybe_lookup_lowerdata(dentry); + if (err) + return err; + + return ovl_maybe_validate_verity(dentry); +} + struct dentry *ovl_lookup(struct inode *dir, struct dentry *dentry, unsigned int flags) { struct ovl_entry *oe = NULL; const struct cred *old_cred; - struct ovl_fs *ofs = dentry->d_sb->s_fs_info; + struct ovl_fs *ofs = OVL_FS(dentry->d_sb); struct ovl_entry *poe = OVL_E(dentry->d_parent); struct ovl_entry *roe = OVL_E(dentry->d_sb->s_root); struct ovl_path *stack = NULL, *origin_path = NULL; @@ -955,6 +1017,7 @@ struct dentry *ovl_lookup(struct inode *dir, struct dentry *dentry, unsigned int i; int err; bool uppermetacopy = false; + int metacopy_size = 0; struct ovl_lookup_data d = { .sb = dentry->d_sb, .name = dentry->d_name, @@ -963,7 +1026,7 @@ struct dentry *ovl_lookup(struct inode *dir, struct dentry *dentry, .stop = false, .last = ovl_redirect_follow(ofs) ? false : !ovl_numlower(poe), .redirect = NULL, - .metacopy = false, + .metacopy = 0, }; if (dentry->d_name.len > ofs->namelen) @@ -999,6 +1062,7 @@ struct dentry *ovl_lookup(struct inode *dir, struct dentry *dentry, if (d.metacopy) uppermetacopy = true; + metacopy_size = d.metacopy; } if (d.redirect) { @@ -1076,6 +1140,9 @@ struct dentry *ovl_lookup(struct inode *dir, struct dentry *dentry, origin = this; } + if (!upperdentry && !d.is_dir && !ctr && d.metacopy) + metacopy_size = d.metacopy; + if (d.metacopy && ctr) { /* * Do not store intermediate metacopy dentries in @@ -1120,7 +1187,7 @@ struct dentry *ovl_lookup(struct inode *dir, struct dentry *dentry, /* Defer lookup of lowerdata in data-only layers to first access */ if (d.metacopy && ctr && ofs->numdatalayer && d.absolute_redirect) { - d.metacopy = false; + d.metacopy = 0; ctr++; } @@ -1211,10 +1278,11 @@ struct dentry *ovl_lookup(struct inode *dir, struct dentry *dentry, upperredirect = NULL; goto out_free_oe; } - err = ovl_check_metacopy_xattr(ofs, &upperpath); + err = ovl_check_metacopy_xattr(ofs, &upperpath, NULL); if (err < 0) goto out_free_oe; uppermetacopy = err; + metacopy_size = err; } if (upperdentry || ctr) { @@ -1236,6 +1304,9 @@ struct dentry *ovl_lookup(struct inode *dir, struct dentry *dentry, goto out_free_oe; if (upperdentry && !uppermetacopy) ovl_set_flag(OVL_UPPERDATA, inode); + + if (metacopy_size > OVL_METACOPY_MIN_SIZE) + ovl_set_flag(OVL_HAS_DIGEST, inode); } ovl_dentry_init_reval(dentry, upperdentry, OVL_I_E(inode)); diff --git a/fs/overlayfs/overlayfs.h b/fs/overlayfs/overlayfs.h index 9402591f12aa..9817b2dcb132 100644 --- a/fs/overlayfs/overlayfs.h +++ b/fs/overlayfs/overlayfs.h @@ -7,6 +7,7 @@ #include <linux/kernel.h> #include <linux/uuid.h> #include <linux/fs.h> +#include <linux/fsverity.h> #include <linux/namei.h> #include <linux/posix_acl.h> #include <linux/posix_acl_xattr.h> @@ -36,6 +37,7 @@ enum ovl_xattr { OVL_XATTR_IMPURE, OVL_XATTR_NLINK, OVL_XATTR_UPPER, + OVL_XATTR_UUID, OVL_XATTR_METACOPY, OVL_XATTR_PROTATTR, }; @@ -49,6 +51,8 @@ enum ovl_inode_flag { OVL_UPPERDATA, /* Inode number will remain constant over copy up. */ OVL_CONST_INO, + OVL_HAS_DIGEST, + OVL_VERIFIED_DIGEST, }; enum ovl_entry_flag { @@ -65,11 +69,24 @@ enum { }; enum { + OVL_UUID_OFF, + OVL_UUID_NULL, + OVL_UUID_AUTO, + OVL_UUID_ON, +}; + +enum { OVL_XINO_OFF, OVL_XINO_AUTO, OVL_XINO_ON, }; +enum { + OVL_VERITY_OFF, + OVL_VERITY_ON, + OVL_VERITY_REQUIRE, +}; + /* * The tuple (fh,uuid) is a universal unique identifier for a copy up origin, * where: @@ -126,6 +143,26 @@ struct ovl_fh { #define OVL_FH_FID_OFFSET (OVL_FH_WIRE_OFFSET + \ offsetof(struct ovl_fb, fid)) +/* On-disk format for "metacopy" xattr (if non-zero size) */ +struct ovl_metacopy { + u8 version; /* 0 */ + u8 len; /* size of this header + used digest bytes */ + u8 flags; + u8 digest_algo; /* FS_VERITY_HASH_ALG_* constant, 0 for no digest */ + u8 digest[FS_VERITY_MAX_DIGEST_SIZE]; /* Only the used part on disk */ +} __packed; + +#define OVL_METACOPY_MAX_SIZE (sizeof(struct ovl_metacopy)) +#define OVL_METACOPY_MIN_SIZE (OVL_METACOPY_MAX_SIZE - FS_VERITY_MAX_DIGEST_SIZE) +#define OVL_METACOPY_INIT { 0, OVL_METACOPY_MIN_SIZE } + +static inline int ovl_metadata_digest_size(const struct ovl_metacopy *metacopy) +{ + if (metacopy->len < OVL_METACOPY_MIN_SIZE) + return 0; + return (int)metacopy->len - OVL_METACOPY_MIN_SIZE; +} + extern const char *const ovl_xattr_table[][2]; static inline const char *ovl_xattr(struct ovl_fs *ofs, enum ovl_xattr ox) { @@ -430,6 +467,8 @@ bool ovl_already_copied_up(struct dentry *dentry, int flags); bool ovl_path_check_dir_xattr(struct ovl_fs *ofs, const struct path *path, enum ovl_xattr ox); bool ovl_path_check_origin_xattr(struct ovl_fs *ofs, const struct path *path); +bool ovl_init_uuid_xattr(struct super_block *sb, struct ovl_fs *ofs, + const struct path *upperpath); static inline bool ovl_check_origin_xattr(struct ovl_fs *ofs, struct dentry *upperdentry) @@ -452,9 +491,20 @@ bool ovl_need_index(struct dentry *dentry); int ovl_nlink_start(struct dentry *dentry); void ovl_nlink_end(struct dentry *dentry); int ovl_lock_rename_workdir(struct dentry *workdir, struct dentry *upperdir); -int ovl_check_metacopy_xattr(struct ovl_fs *ofs, const struct path *path); +int ovl_check_metacopy_xattr(struct ovl_fs *ofs, const struct path *path, + struct ovl_metacopy *data); +int ovl_set_metacopy_xattr(struct ovl_fs *ofs, struct dentry *d, + struct ovl_metacopy *metacopy); bool ovl_is_metacopy_dentry(struct dentry *dentry); char *ovl_get_redirect_xattr(struct ovl_fs *ofs, const struct path *path, int padding); +int ovl_ensure_verity_loaded(struct path *path); +int ovl_get_verity_xattr(struct ovl_fs *ofs, const struct path *path, + u8 *digest_buf, int *buf_length); +int ovl_validate_verity(struct ovl_fs *ofs, + struct path *metapath, + struct path *datapath); +int ovl_get_verity_digest(struct ovl_fs *ofs, struct path *src, + struct ovl_metacopy *metacopy); int ovl_sync_status(struct ovl_fs *ofs); static inline void ovl_set_flag(unsigned long flag, struct inode *inode) @@ -494,6 +544,17 @@ static inline bool ovl_redirect_dir(struct ovl_fs *ofs) return ofs->config.redirect_mode == OVL_REDIRECT_ON; } +static inline bool ovl_origin_uuid(struct ovl_fs *ofs) +{ + return ofs->config.uuid != OVL_UUID_OFF; +} + +static inline bool ovl_has_fsid(struct ovl_fs *ofs) +{ + return ofs->config.uuid == OVL_UUID_ON || + ofs->config.uuid == OVL_UUID_AUTO; +} + /* * With xino=auto, we do best effort to keep all inodes on same st_dev and * d_ino consistent with st_ino. @@ -574,7 +635,7 @@ struct dentry *ovl_get_index_fh(struct ovl_fs *ofs, struct ovl_fh *fh); struct dentry *ovl_lookup_index(struct ovl_fs *ofs, struct dentry *upper, struct dentry *origin, bool verify); int ovl_path_next(int idx, struct dentry *dentry, struct path *path); -int ovl_maybe_lookup_lowerdata(struct dentry *dentry); +int ovl_verify_lowerdata(struct dentry *dentry); struct dentry *ovl_lookup(struct inode *dir, struct dentry *dentry, unsigned int flags); bool ovl_lower_positive(struct dentry *dentry); @@ -665,7 +726,7 @@ static inline struct posix_acl *ovl_get_acl_path(const struct path *path, } #endif -int ovl_update_time(struct inode *inode, struct timespec64 *ts, int flags); +int ovl_update_time(struct inode *inode, int flags); bool ovl_is_private_xattr(struct super_block *sb, const char *name); struct ovl_inode_params { @@ -759,6 +820,7 @@ int ovl_set_origin(struct ovl_fs *ofs, struct dentry *lower, /* export.c */ extern const struct export_operations ovl_export_operations; +extern const struct export_operations ovl_export_fid_operations; /* super.c */ int ovl_fill_super(struct super_block *sb, struct fs_context *fc); diff --git a/fs/overlayfs/ovl_entry.h b/fs/overlayfs/ovl_entry.h index 306e1ecdc96d..e9539f98e86a 100644 --- a/fs/overlayfs/ovl_entry.h +++ b/fs/overlayfs/ovl_entry.h @@ -10,8 +10,9 @@ struct ovl_config { char *workdir; bool default_permissions; int redirect_mode; + int verity_mode; bool index; - bool uuid; + int uuid; bool nfs_export; int xino; bool metacopy; @@ -81,6 +82,7 @@ struct ovl_fs { const struct cred *creator_cred; bool tmpfile; bool noxattr; + bool nofh; /* Did we take the inuse lock? */ bool upperdir_locked; bool workdir_locked; @@ -115,8 +117,13 @@ static inline struct mnt_idmap *ovl_upper_mnt_idmap(struct ovl_fs *ofs) return mnt_idmap(ovl_upper_mnt(ofs)); } +extern struct file_system_type ovl_fs_type; + static inline struct ovl_fs *OVL_FS(struct super_block *sb) { + if (IS_ENABLED(CONFIG_OVERLAY_FS_DEBUG)) + WARN_ON_ONCE(sb->s_type != &ovl_fs_type); + return (struct ovl_fs *)sb->s_fs_info; } diff --git a/fs/overlayfs/params.c b/fs/overlayfs/params.c index a63160dbb0f9..b9355bb6d75a 100644 --- a/fs/overlayfs/params.c +++ b/fs/overlayfs/params.c @@ -55,6 +55,7 @@ enum { Opt_userxattr, Opt_xino, Opt_metacopy, + Opt_verity, Opt_volatile, }; @@ -64,6 +65,24 @@ static const struct constant_table ovl_parameter_bool[] = { {} }; +static const struct constant_table ovl_parameter_uuid[] = { + { "off", OVL_UUID_OFF }, + { "null", OVL_UUID_NULL }, + { "auto", OVL_UUID_AUTO }, + { "on", OVL_UUID_ON }, + {} +}; + +static const char *ovl_uuid_mode(struct ovl_config *config) +{ + return ovl_parameter_uuid[config->uuid].name; +} + +static int ovl_uuid_def(void) +{ + return OVL_UUID_AUTO; +} + static const struct constant_table ovl_parameter_xino[] = { { "off", OVL_XINO_OFF }, { "auto", OVL_XINO_AUTO }, @@ -101,6 +120,23 @@ static int ovl_redirect_mode_def(void) OVL_REDIRECT_NOFOLLOW; } +static const struct constant_table ovl_parameter_verity[] = { + { "off", OVL_VERITY_OFF }, + { "on", OVL_VERITY_ON }, + { "require", OVL_VERITY_REQUIRE }, + {} +}; + +static const char *ovl_verity_mode(struct ovl_config *config) +{ + return ovl_parameter_verity[config->verity_mode].name; +} + +static int ovl_verity_mode_def(void) +{ + return OVL_VERITY_OFF; +} + #define fsparam_string_empty(NAME, OPT) \ __fsparam(fs_param_is_string, NAME, OPT, fs_param_can_be_empty, NULL) @@ -111,11 +147,12 @@ const struct fs_parameter_spec ovl_parameter_spec[] = { fsparam_flag("default_permissions", Opt_default_permissions), fsparam_enum("redirect_dir", Opt_redirect_dir, ovl_parameter_redirect_dir), fsparam_enum("index", Opt_index, ovl_parameter_bool), - fsparam_enum("uuid", Opt_uuid, ovl_parameter_bool), + fsparam_enum("uuid", Opt_uuid, ovl_parameter_uuid), fsparam_enum("nfs_export", Opt_nfs_export, ovl_parameter_bool), fsparam_flag("userxattr", Opt_userxattr), fsparam_enum("xino", Opt_xino, ovl_parameter_xino), fsparam_enum("metacopy", Opt_metacopy, ovl_parameter_bool), + fsparam_enum("verity", Opt_verity, ovl_parameter_verity), fsparam_flag("volatile", Opt_volatile), {} }; @@ -572,6 +609,9 @@ static int ovl_parse_param(struct fs_context *fc, struct fs_parameter *param) config->metacopy = result.uint_32; ctx->set.metacopy = true; break; + case Opt_verity: + config->verity_mode = result.uint_32; + break; case Opt_volatile: config->ovl_volatile = true; break; @@ -622,7 +662,7 @@ static void ovl_free(struct fs_context *fc) static int ovl_reconfigure(struct fs_context *fc) { struct super_block *sb = fc->root->d_sb; - struct ovl_fs *ofs = sb->s_fs_info; + struct ovl_fs *ofs = OVL_FS(sb); struct super_block *upper_sb; int ret = 0; @@ -679,7 +719,7 @@ int ovl_init_fs_context(struct fs_context *fc) ofs->config.redirect_mode = ovl_redirect_mode_def(); ofs->config.index = ovl_index_def; - ofs->config.uuid = true; + ofs->config.uuid = ovl_uuid_def(); ofs->config.nfs_export = ovl_nfs_export_def; ofs->config.xino = ovl_xino_def(); ofs->config.metacopy = ovl_metacopy_def; @@ -762,6 +802,23 @@ int ovl_fs_params_verify(const struct ovl_fs_context *ctx, config->ovl_volatile = false; } + if (!config->upperdir && config->uuid == OVL_UUID_ON) { + pr_info("option \"uuid=on\" requires an upper fs, falling back to uuid=null.\n"); + config->uuid = OVL_UUID_NULL; + } + + /* Resolve verity -> metacopy dependency */ + if (config->verity_mode && !config->metacopy) { + /* Don't allow explicit specified conflicting combinations */ + if (set.metacopy) { + pr_err("conflicting options: metacopy=off,verity=%s\n", + ovl_verity_mode(config)); + return -EINVAL; + } + /* Otherwise automatically enable metacopy. */ + config->metacopy = true; + } + /* * This is to make the logic below simpler. It doesn't make any other * difference, since redirect_dir=on is only used for upper. @@ -769,13 +826,18 @@ int ovl_fs_params_verify(const struct ovl_fs_context *ctx, if (!config->upperdir && config->redirect_mode == OVL_REDIRECT_FOLLOW) config->redirect_mode = OVL_REDIRECT_ON; - /* Resolve metacopy -> redirect_dir dependency */ + /* Resolve verity -> metacopy -> redirect_dir dependency */ if (config->metacopy && config->redirect_mode != OVL_REDIRECT_ON) { if (set.metacopy && set.redirect) { pr_err("conflicting options: metacopy=on,redirect_dir=%s\n", ovl_redirect_mode(config)); return -EINVAL; } + if (config->verity_mode && set.redirect) { + pr_err("conflicting options: verity=%s,redirect_dir=%s\n", + ovl_verity_mode(config), ovl_redirect_mode(config)); + return -EINVAL; + } if (set.redirect) { /* * There was an explicit redirect_dir=... that resulted @@ -812,7 +874,7 @@ int ovl_fs_params_verify(const struct ovl_fs_context *ctx, } } - /* Resolve nfs_export -> !metacopy dependency */ + /* Resolve nfs_export -> !metacopy && !verity dependency */ if (config->nfs_export && config->metacopy) { if (set.nfs_export && set.metacopy) { pr_err("conflicting options: nfs_export=on,metacopy=on\n"); @@ -825,6 +887,14 @@ int ovl_fs_params_verify(const struct ovl_fs_context *ctx, */ pr_info("disabling nfs_export due to metacopy=on\n"); config->nfs_export = false; + } else if (config->verity_mode) { + /* + * There was an explicit verity=.. that resulted + * in this conflict. + */ + pr_info("disabling nfs_export due to verity=%s\n", + ovl_verity_mode(config)); + config->nfs_export = false; } else { /* * There was an explicit nfs_export=on that resulted @@ -836,7 +906,7 @@ int ovl_fs_params_verify(const struct ovl_fs_context *ctx, } - /* Resolve userxattr -> !redirect && !metacopy dependency */ + /* Resolve userxattr -> !redirect && !metacopy && !verity dependency */ if (config->userxattr) { if (set.redirect && config->redirect_mode != OVL_REDIRECT_NOFOLLOW) { @@ -848,6 +918,11 @@ int ovl_fs_params_verify(const struct ovl_fs_context *ctx, pr_err("conflicting options: userxattr,metacopy=on\n"); return -EINVAL; } + if (config->verity_mode) { + pr_err("conflicting options: userxattr,verity=%s\n", + ovl_verity_mode(config)); + return -EINVAL; + } /* * Silently disable default setting of redirect and metacopy. * This shall be the default in the future as well: these @@ -872,7 +947,7 @@ int ovl_fs_params_verify(const struct ovl_fs_context *ctx, int ovl_show_options(struct seq_file *m, struct dentry *dentry) { struct super_block *sb = dentry->d_sb; - struct ovl_fs *ofs = sb->s_fs_info; + struct ovl_fs *ofs = OVL_FS(sb); size_t nr, nr_merged_lower = ofs->numlayer - ofs->numdatalayer; const struct ovl_layer *data_layers = &ofs->layers[nr_merged_lower]; @@ -895,8 +970,8 @@ int ovl_show_options(struct seq_file *m, struct dentry *dentry) ovl_redirect_mode(&ofs->config)); if (ofs->config.index != ovl_index_def) seq_printf(m, ",index=%s", ofs->config.index ? "on" : "off"); - if (!ofs->config.uuid) - seq_puts(m, ",uuid=off"); + if (ofs->config.uuid != ovl_uuid_def()) + seq_printf(m, ",uuid=%s", ovl_uuid_mode(&ofs->config)); if (ofs->config.nfs_export != ovl_nfs_export_def) seq_printf(m, ",nfs_export=%s", ofs->config.nfs_export ? "on" : "off"); @@ -909,5 +984,8 @@ int ovl_show_options(struct seq_file *m, struct dentry *dentry) seq_puts(m, ",volatile"); if (ofs->config.userxattr) seq_puts(m, ",userxattr"); + if (ofs->config.verity_mode != ovl_verity_mode_def()) + seq_printf(m, ",verity=%s", + ovl_verity_mode(&ofs->config)); return 0; } diff --git a/fs/overlayfs/readdir.c b/fs/overlayfs/readdir.c index ee5c4736480f..de39e067ae65 100644 --- a/fs/overlayfs/readdir.c +++ b/fs/overlayfs/readdir.c @@ -954,10 +954,11 @@ static int ovl_dir_open(struct inode *inode, struct file *file) return 0; } +WRAP_DIR_ITER(ovl_iterate) // FIXME! const struct file_operations ovl_dir_operations = { .read = generic_read_dir, .open = ovl_dir_open, - .iterate = ovl_iterate, + .iterate_shared = shared_ovl_iterate, .llseek = ovl_dir_llseek, .fsync = ovl_dir_fsync, .release = ovl_dir_release, diff --git a/fs/overlayfs/super.c b/fs/overlayfs/super.c index cc8977498c48..def266b5e2a3 100644 --- a/fs/overlayfs/super.c +++ b/fs/overlayfs/super.c @@ -32,6 +32,7 @@ static struct dentry *ovl_d_real(struct dentry *dentry, const struct inode *inode) { struct dentry *real = NULL, *lower; + int err; /* It's an overlay file */ if (inode && d_inode(dentry) == inode) @@ -58,7 +59,9 @@ static struct dentry *ovl_d_real(struct dentry *dentry, * uprobes on offset within the file, so lowerdata should be available * when setting the uprobe. */ - ovl_maybe_lookup_lowerdata(dentry); + err = ovl_verify_lowerdata(dentry); + if (err) + goto bug; lower = ovl_dentry_lowerdata(dentry); if (!lower) goto bug; @@ -182,7 +185,7 @@ static void ovl_destroy_inode(struct inode *inode) static void ovl_put_super(struct super_block *sb) { - struct ovl_fs *ofs = sb->s_fs_info; + struct ovl_fs *ofs = OVL_FS(sb); if (ofs) ovl_free_fs(ofs); @@ -191,7 +194,7 @@ static void ovl_put_super(struct super_block *sb) /* Sync real dirty inodes in upper filesystem (if it exists) */ static int ovl_sync_fs(struct super_block *sb, int wait) { - struct ovl_fs *ofs = sb->s_fs_info; + struct ovl_fs *ofs = OVL_FS(sb); struct super_block *upper_sb; int ret; @@ -239,8 +242,9 @@ static int ovl_sync_fs(struct super_block *sb, int wait) */ static int ovl_statfs(struct dentry *dentry, struct kstatfs *buf) { - struct ovl_fs *ofs = dentry->d_sb->s_fs_info; - struct dentry *root_dentry = dentry->d_sb->s_root; + struct super_block *sb = dentry->d_sb; + struct ovl_fs *ofs = OVL_FS(sb); + struct dentry *root_dentry = sb->s_root; struct path path; int err; @@ -250,6 +254,8 @@ static int ovl_statfs(struct dentry *dentry, struct kstatfs *buf) if (!err) { buf->f_namelen = ofs->namelen; buf->f_type = OVERLAYFS_SUPER_MAGIC; + if (ovl_has_fsid(ofs)) + buf->f_fsid = uuid_to_fsid(sb->s_uuid.b); } return err; @@ -397,6 +403,7 @@ static int ovl_lower_dir(const char *name, struct path *path, pr_warn("fs on '%s' does not support file handles, falling back to index=off,nfs_export=off.\n", name); } + ofs->nofh |= !fh_type; /* * Decoding origin file handle is required for persistent st_ino. * Without persistent st_ino, xino=auto falls back to xino=off. @@ -770,6 +777,10 @@ static int ovl_make_workdir(struct super_block *sb, struct ovl_fs *ofs, ofs->config.index = false; pr_warn("...falling back to index=off.\n"); } + if (ovl_has_fsid(ofs)) { + ofs->config.uuid = OVL_UUID_NULL; + pr_warn("...falling back to uuid=null.\n"); + } /* * xattr support is required for persistent st_ino. * Without persistent st_ino, xino=auto falls back to xino=off. @@ -815,6 +826,7 @@ static int ovl_make_workdir(struct super_block *sb, struct ovl_fs *ofs, ofs->config.index = false; pr_warn("upper fs does not support file handles, falling back to index=off.\n"); } + ofs->nofh |= !fh_type; /* Check if upper fs has 32bit inode numbers */ if (fh_type != FILEID_INO32_GEN) @@ -1416,9 +1428,12 @@ int ovl_fill_super(struct super_block *sb, struct fs_context *fc) if (!ovl_upper_mnt(ofs)) sb->s_flags |= SB_RDONLY; - if (!ofs->config.uuid && ofs->numfs > 1) { - pr_warn("The uuid=off requires a single fs for lower and upper, falling back to uuid=on.\n"); - ofs->config.uuid = true; + if (!ovl_origin_uuid(ofs) && ofs->numfs > 1) { + pr_warn("The uuid=off requires a single fs for lower and upper, falling back to uuid=null.\n"); + ofs->config.uuid = OVL_UUID_NULL; + } else if (ovl_has_fsid(ofs) && ovl_upper_mnt(ofs)) { + /* Use per instance persistent uuid/fsid */ + ovl_init_uuid_xattr(sb, ofs, &ctx->upper); } if (!ovl_force_readonly(ofs) && ofs->config.index) { @@ -1449,8 +1464,15 @@ int ovl_fill_super(struct super_block *sb, struct fs_context *fc) ofs->config.nfs_export = false; } + /* + * Support encoding decodable file handles with nfs_export=on + * and encoding non-decodable file handles with nfs_export=off + * if all layers support file handles. + */ if (ofs->config.nfs_export) sb->s_export_op = &ovl_export_operations; + else if (!ofs->nofh) + sb->s_export_op = &ovl_export_fid_operations; /* Never override disk quota limits or use reserved space */ cap_lower(cred->cap_effective, CAP_SYS_RESOURCE); @@ -1479,7 +1501,7 @@ out_err: return err; } -static struct file_system_type ovl_fs_type = { +struct file_system_type ovl_fs_type = { .owner = THIS_MODULE, .name = "overlay", .init_fs_context = ovl_init_fs_context, diff --git a/fs/overlayfs/util.c b/fs/overlayfs/util.c index 7ef9e13c404a..89e0d60d35b6 100644 --- a/fs/overlayfs/util.c +++ b/fs/overlayfs/util.c @@ -10,6 +10,7 @@ #include <linux/cred.h> #include <linux/xattr.h> #include <linux/exportfs.h> +#include <linux/file.h> #include <linux/fileattr.h> #include <linux/uuid.h> #include <linux/namei.h> @@ -18,25 +19,25 @@ int ovl_want_write(struct dentry *dentry) { - struct ovl_fs *ofs = dentry->d_sb->s_fs_info; + struct ovl_fs *ofs = OVL_FS(dentry->d_sb); return mnt_want_write(ovl_upper_mnt(ofs)); } void ovl_drop_write(struct dentry *dentry) { - struct ovl_fs *ofs = dentry->d_sb->s_fs_info; + struct ovl_fs *ofs = OVL_FS(dentry->d_sb); mnt_drop_write(ovl_upper_mnt(ofs)); } struct dentry *ovl_workdir(struct dentry *dentry) { - struct ovl_fs *ofs = dentry->d_sb->s_fs_info; + struct ovl_fs *ofs = OVL_FS(dentry->d_sb); return ofs->workdir; } const struct cred *ovl_override_creds(struct super_block *sb) { - struct ovl_fs *ofs = sb->s_fs_info; + struct ovl_fs *ofs = OVL_FS(sb); return override_creds(ofs->creator_cred); } @@ -62,7 +63,7 @@ int ovl_can_decode_fh(struct super_block *sb) struct dentry *ovl_indexdir(struct super_block *sb) { - struct ovl_fs *ofs = sb->s_fs_info; + struct ovl_fs *ofs = OVL_FS(sb); return ofs->indexdir; } @@ -70,7 +71,7 @@ struct dentry *ovl_indexdir(struct super_block *sb) /* Index all files on copy up. For now only enabled for NFS export */ bool ovl_index_all(struct super_block *sb) { - struct ovl_fs *ofs = sb->s_fs_info; + struct ovl_fs *ofs = OVL_FS(sb); return ofs->config.nfs_export && ofs->config.index; } @@ -78,7 +79,7 @@ bool ovl_index_all(struct super_block *sb) /* Verify lower origin on lookup. For now only enabled for NFS export */ bool ovl_verify_lower(struct super_block *sb) { - struct ovl_fs *ofs = sb->s_fs_info; + struct ovl_fs *ofs = OVL_FS(sb); return ofs->config.nfs_export && ofs->config.index; } @@ -203,7 +204,7 @@ enum ovl_path_type ovl_path_type(struct dentry *dentry) void ovl_path_upper(struct dentry *dentry, struct path *path) { - struct ovl_fs *ofs = dentry->d_sb->s_fs_info; + struct ovl_fs *ofs = OVL_FS(dentry->d_sb); path->mnt = ovl_upper_mnt(ofs); path->dentry = ovl_dentry_upper(dentry); @@ -675,6 +676,65 @@ bool ovl_path_check_origin_xattr(struct ovl_fs *ofs, const struct path *path) return false; } +/* + * Load persistent uuid from xattr into s_uuid if found, or store a new + * random generated value in s_uuid and in xattr. + */ +bool ovl_init_uuid_xattr(struct super_block *sb, struct ovl_fs *ofs, + const struct path *upperpath) +{ + bool set = false; + int res; + + /* Try to load existing persistent uuid */ + res = ovl_path_getxattr(ofs, upperpath, OVL_XATTR_UUID, sb->s_uuid.b, + UUID_SIZE); + if (res == UUID_SIZE) + return true; + + if (res != -ENODATA) + goto fail; + + /* + * With uuid=auto, if uuid xattr is found, it will be used. + * If uuid xattrs is not found, generate a persistent uuid only on mount + * of new overlays where upper root dir is not yet marked as impure. + * An upper dir is marked as impure on copy up or lookup of its subdirs. + */ + if (ofs->config.uuid == OVL_UUID_AUTO) { + res = ovl_path_getxattr(ofs, upperpath, OVL_XATTR_IMPURE, NULL, + 0); + if (res > 0) { + /* Any mount of old overlay - downgrade to uuid=null */ + ofs->config.uuid = OVL_UUID_NULL; + return true; + } else if (res == -ENODATA) { + /* First mount of new overlay - upgrade to uuid=on */ + ofs->config.uuid = OVL_UUID_ON; + } else if (res < 0) { + goto fail; + } + + } + + /* Generate overlay instance uuid */ + uuid_gen(&sb->s_uuid); + + /* Try to store persistent uuid */ + set = true; + res = ovl_setxattr(ofs, upperpath->dentry, OVL_XATTR_UUID, sb->s_uuid.b, + UUID_SIZE); + if (res == 0) + return true; + +fail: + memset(sb->s_uuid.b, 0, UUID_SIZE); + ofs->config.uuid = OVL_UUID_NULL; + pr_warn("failed to %s uuid (%pd2, err=%i); falling back to uuid=null.\n", + set ? "set" : "get", upperpath->dentry, res); + return false; +} + bool ovl_path_check_dir_xattr(struct ovl_fs *ofs, const struct path *path, enum ovl_xattr ox) { @@ -697,6 +757,7 @@ bool ovl_path_check_dir_xattr(struct ovl_fs *ofs, const struct path *path, #define OVL_XATTR_IMPURE_POSTFIX "impure" #define OVL_XATTR_NLINK_POSTFIX "nlink" #define OVL_XATTR_UPPER_POSTFIX "upper" +#define OVL_XATTR_UUID_POSTFIX "uuid" #define OVL_XATTR_METACOPY_POSTFIX "metacopy" #define OVL_XATTR_PROTATTR_POSTFIX "protattr" @@ -711,6 +772,7 @@ const char *const ovl_xattr_table[][2] = { OVL_XATTR_TAB_ENTRY(OVL_XATTR_IMPURE), OVL_XATTR_TAB_ENTRY(OVL_XATTR_NLINK), OVL_XATTR_TAB_ENTRY(OVL_XATTR_UPPER), + OVL_XATTR_TAB_ENTRY(OVL_XATTR_UUID), OVL_XATTR_TAB_ENTRY(OVL_XATTR_METACOPY), OVL_XATTR_TAB_ENTRY(OVL_XATTR_PROTATTR), }; @@ -1054,8 +1116,12 @@ err: return -EIO; } -/* err < 0, 0 if no metacopy xattr, 1 if metacopy xattr found */ -int ovl_check_metacopy_xattr(struct ovl_fs *ofs, const struct path *path) +/* + * err < 0, 0 if no metacopy xattr, metacopy data size if xattr found. + * an empty xattr returns OVL_METACOPY_MIN_SIZE to distinguish from no xattr value. + */ +int ovl_check_metacopy_xattr(struct ovl_fs *ofs, const struct path *path, + struct ovl_metacopy *data) { int res; @@ -1063,7 +1129,8 @@ int ovl_check_metacopy_xattr(struct ovl_fs *ofs, const struct path *path) if (!S_ISREG(d_inode(path->dentry)->i_mode)) return 0; - res = ovl_path_getxattr(ofs, path, OVL_XATTR_METACOPY, NULL, 0); + res = ovl_path_getxattr(ofs, path, OVL_XATTR_METACOPY, + data, data ? OVL_METACOPY_MAX_SIZE : 0); if (res < 0) { if (res == -ENODATA || res == -EOPNOTSUPP) return 0; @@ -1077,12 +1144,48 @@ int ovl_check_metacopy_xattr(struct ovl_fs *ofs, const struct path *path) goto out; } - return 1; + if (res == 0) { + /* Emulate empty data for zero size metacopy xattr */ + res = OVL_METACOPY_MIN_SIZE; + if (data) { + memset(data, 0, res); + data->len = res; + } + } else if (res < OVL_METACOPY_MIN_SIZE) { + pr_warn_ratelimited("metacopy file '%pd' has too small xattr\n", + path->dentry); + return -EIO; + } else if (data) { + if (data->version != 0) { + pr_warn_ratelimited("metacopy file '%pd' has unsupported version\n", + path->dentry); + return -EIO; + } + if (res != data->len) { + pr_warn_ratelimited("metacopy file '%pd' has invalid xattr size\n", + path->dentry); + return -EIO; + } + } + + return res; out: pr_warn_ratelimited("failed to get metacopy (%i)\n", res); return res; } +int ovl_set_metacopy_xattr(struct ovl_fs *ofs, struct dentry *d, struct ovl_metacopy *metacopy) +{ + size_t len = metacopy->len; + + /* If no flags or digest fall back to empty metacopy file */ + if (metacopy->version == 0 && metacopy->flags == 0 && metacopy->digest_algo == 0) + len = 0; + + return ovl_check_setxattr(ofs, d, OVL_XATTR_METACOPY, + metacopy, len, -EOPNOTSUPP); +} + bool ovl_is_metacopy_dentry(struct dentry *dentry) { struct ovl_entry *oe = OVL_E(dentry); @@ -1145,6 +1248,112 @@ err_free: return ERR_PTR(res); } +/* Call with mounter creds as it may open the file */ +int ovl_ensure_verity_loaded(struct path *datapath) +{ + struct inode *inode = d_inode(datapath->dentry); + struct file *filp; + + if (!fsverity_active(inode) && IS_VERITY(inode)) { + /* + * If this inode was not yet opened, the verity info hasn't been + * loaded yet, so we need to do that here to force it into memory. + */ + filp = kernel_file_open(datapath, O_RDONLY, inode, current_cred()); + if (IS_ERR(filp)) + return PTR_ERR(filp); + fput(filp); + } + + return 0; +} + +int ovl_validate_verity(struct ovl_fs *ofs, + struct path *metapath, + struct path *datapath) +{ + struct ovl_metacopy metacopy_data; + u8 actual_digest[FS_VERITY_MAX_DIGEST_SIZE]; + int xattr_digest_size, digest_size; + int xattr_size, err; + u8 verity_algo; + + if (!ofs->config.verity_mode || + /* Verity only works on regular files */ + !S_ISREG(d_inode(metapath->dentry)->i_mode)) + return 0; + + xattr_size = ovl_check_metacopy_xattr(ofs, metapath, &metacopy_data); + if (xattr_size < 0) + return xattr_size; + + if (!xattr_size || !metacopy_data.digest_algo) { + if (ofs->config.verity_mode == OVL_VERITY_REQUIRE) { + pr_warn_ratelimited("metacopy file '%pd' has no digest specified\n", + metapath->dentry); + return -EIO; + } + return 0; + } + + xattr_digest_size = ovl_metadata_digest_size(&metacopy_data); + + err = ovl_ensure_verity_loaded(datapath); + if (err < 0) { + pr_warn_ratelimited("lower file '%pd' failed to load fs-verity info\n", + datapath->dentry); + return -EIO; + } + + digest_size = fsverity_get_digest(d_inode(datapath->dentry), actual_digest, + &verity_algo, NULL); + if (digest_size == 0) { + pr_warn_ratelimited("lower file '%pd' has no fs-verity digest\n", datapath->dentry); + return -EIO; + } + + if (xattr_digest_size != digest_size || + metacopy_data.digest_algo != verity_algo || + memcmp(metacopy_data.digest, actual_digest, xattr_digest_size) != 0) { + pr_warn_ratelimited("lower file '%pd' has the wrong fs-verity digest\n", + datapath->dentry); + return -EIO; + } + + return 0; +} + +int ovl_get_verity_digest(struct ovl_fs *ofs, struct path *src, + struct ovl_metacopy *metacopy) +{ + int err, digest_size; + + if (!ofs->config.verity_mode || !S_ISREG(d_inode(src->dentry)->i_mode)) + return 0; + + err = ovl_ensure_verity_loaded(src); + if (err < 0) { + pr_warn_ratelimited("lower file '%pd' failed to load fs-verity info\n", + src->dentry); + return -EIO; + } + + digest_size = fsverity_get_digest(d_inode(src->dentry), + metacopy->digest, &metacopy->digest_algo, NULL); + if (digest_size == 0 || + WARN_ON_ONCE(digest_size > FS_VERITY_MAX_DIGEST_SIZE)) { + if (ofs->config.verity_mode == OVL_VERITY_REQUIRE) { + pr_warn_ratelimited("lower file '%pd' has no fs-verity digest\n", + src->dentry); + return -EIO; + } + return 0; + } + + metacopy->len += digest_size; + return 0; +} + /* * ovl_sync_status() - Check fs sync status for volatile mounts * @@ -1202,6 +1411,6 @@ void ovl_copyattr(struct inode *inode) inode->i_mode = realinode->i_mode; inode->i_atime = realinode->i_atime; inode->i_mtime = realinode->i_mtime; - inode->i_ctime = realinode->i_ctime; + inode_set_ctime_to_ts(inode, inode_get_ctime(realinode)); i_size_write(inode, i_size_read(realinode)); } diff --git a/fs/pipe.c b/fs/pipe.c index 2d88f73f585a..6c1a9b1db907 100644 --- a/fs/pipe.c +++ b/fs/pipe.c @@ -489,7 +489,7 @@ pipe_write(struct kiocb *iocb, struct iov_iter *from) head = pipe->head; if (!pipe_full(head, pipe->tail, pipe->max_usage)) { unsigned int mask = pipe->ring_size - 1; - struct pipe_buffer *buf = &pipe->bufs[head & mask]; + struct pipe_buffer *buf; struct page *page = pipe->tmp_page; int copied; @@ -899,7 +899,7 @@ static struct inode * get_pipe_inode(void) inode->i_mode = S_IFIFO | S_IRUSR | S_IWUSR; inode->i_uid = current_fsuid(); inode->i_gid = current_fsgid(); - inode->i_atime = inode->i_mtime = inode->i_ctime = current_time(inode); + inode->i_atime = inode->i_mtime = inode_set_ctime_current(inode); return inode; @@ -1236,7 +1236,7 @@ const struct file_operations pipefifo_fops = { * Currently we rely on the pipe array holding a power-of-2 number * of pages. Returns 0 on error. */ -unsigned int round_pipe_size(unsigned long size) +unsigned int round_pipe_size(unsigned int size) { if (size > (1U << 31)) return 0; @@ -1319,7 +1319,7 @@ int pipe_resize_ring(struct pipe_inode_info *pipe, unsigned int nr_slots) * Allocate a new array of pipe buffers and copy the info over. Returns the * pipe size if successful, or return -ERROR on error. */ -static long pipe_set_size(struct pipe_inode_info *pipe, unsigned long arg) +static long pipe_set_size(struct pipe_inode_info *pipe, unsigned int arg) { unsigned long user_bufs; unsigned int nr_slots, size; @@ -1387,7 +1387,7 @@ struct pipe_inode_info *get_pipe_info(struct file *file, bool for_splice) return pipe; } -long pipe_fcntl(struct file *file, unsigned int cmd, unsigned long arg) +long pipe_fcntl(struct file *file, unsigned int cmd, unsigned int arg) { struct pipe_inode_info *pipe; long ret; diff --git a/fs/posix_acl.c b/fs/posix_acl.c index 7fa1b738bbab..a05fe94970ce 100644 --- a/fs/posix_acl.c +++ b/fs/posix_acl.c @@ -1027,7 +1027,7 @@ int simple_set_acl(struct mnt_idmap *idmap, struct dentry *dentry, return error; } - inode->i_ctime = current_time(inode); + inode_set_ctime_current(inode); if (IS_I_VERSION(inode)) inode_inc_iversion(inode); set_cached_acl(inode, type, acl); diff --git a/fs/proc/array.c b/fs/proc/array.c index d35bbf35a874..2c2efbe685d8 100644 --- a/fs/proc/array.c +++ b/fs/proc/array.c @@ -431,6 +431,11 @@ static inline void task_untag_mask(struct seq_file *m, struct mm_struct *mm) seq_printf(m, "untag_mask:\t%#lx\n", mm_untag_mask(mm)); } +__weak void arch_proc_pid_thread_features(struct seq_file *m, + struct task_struct *task) +{ +} + int proc_pid_status(struct seq_file *m, struct pid_namespace *ns, struct pid *pid, struct task_struct *task) { @@ -455,6 +460,7 @@ int proc_pid_status(struct seq_file *m, struct pid_namespace *ns, task_cpus_allowed(m, task); cpuset_task_status_allowed(m, task); task_context_switch_counts(m, task); + arch_proc_pid_thread_features(m, task); return 0; } diff --git a/fs/proc/base.c b/fs/proc/base.c index eb2e498e3b8d..ffd54617c354 100644 --- a/fs/proc/base.c +++ b/fs/proc/base.c @@ -1902,7 +1902,7 @@ struct inode *proc_pid_make_inode(struct super_block *sb, ei = PROC_I(inode); inode->i_mode = mode; inode->i_ino = get_next_ino(); - inode->i_mtime = inode->i_atime = inode->i_ctime = current_time(inode); + inode->i_mtime = inode->i_atime = inode_set_ctime_current(inode); inode->i_op = &proc_def_inode_operations; /* @@ -1966,7 +1966,7 @@ int pid_getattr(struct mnt_idmap *idmap, const struct path *path, struct proc_fs_info *fs_info = proc_sb_info(inode->i_sb); struct task_struct *task; - generic_fillattr(&nop_mnt_idmap, inode, stat); + generic_fillattr(&nop_mnt_idmap, request_mask, inode, stat); stat->uid = GLOBAL_ROOT_UID; stat->gid = GLOBAL_ROOT_GID; @@ -2817,7 +2817,7 @@ static int proc_##LSM##_attr_dir_iterate(struct file *filp, \ \ static const struct file_operations proc_##LSM##_attr_dir_ops = { \ .read = generic_read_dir, \ - .iterate = proc_##LSM##_attr_dir_iterate, \ + .iterate_shared = proc_##LSM##_attr_dir_iterate, \ .llseek = default_llseek, \ }; \ \ @@ -3584,7 +3584,8 @@ static int proc_tid_comm_permission(struct mnt_idmap *idmap, } static const struct inode_operations proc_tid_comm_inode_operations = { - .permission = proc_tid_comm_permission, + .setattr = proc_setattr, + .permission = proc_tid_comm_permission, }; /* @@ -3814,11 +3815,10 @@ static struct task_struct *first_tid(struct pid *pid, int tid, loff_t f_pos, /* If we haven't found our starting place yet start * with the leader and walk nr threads forward. */ - pos = task = task->group_leader; - do { + for_each_thread(task, pos) { if (!nr--) goto found; - } while_each_thread(task, pos); + }; fail: pos = NULL; goto out; @@ -3900,7 +3900,7 @@ static int proc_task_getattr(struct mnt_idmap *idmap, { struct inode *inode = d_inode(path->dentry); struct task_struct *p = get_proc_task(inode); - generic_fillattr(&nop_mnt_idmap, inode, stat); + generic_fillattr(&nop_mnt_idmap, request_mask, inode, stat); if (p) { stat->nlink += get_nr_threads(p); diff --git a/fs/proc/fd.c b/fs/proc/fd.c index b3140deebbbf..6276b3938842 100644 --- a/fs/proc/fd.c +++ b/fs/proc/fd.c @@ -352,7 +352,7 @@ static int proc_fd_getattr(struct mnt_idmap *idmap, struct inode *inode = d_inode(path->dentry); int rv = 0; - generic_fillattr(&nop_mnt_idmap, inode, stat); + generic_fillattr(&nop_mnt_idmap, request_mask, inode, stat); /* If it's a directory, put the number of open fds there */ if (S_ISDIR(inode->i_mode)) { diff --git a/fs/proc/generic.c b/fs/proc/generic.c index 42ae38ff6e7e..775ce0bcf08c 100644 --- a/fs/proc/generic.c +++ b/fs/proc/generic.c @@ -146,7 +146,7 @@ static int proc_getattr(struct mnt_idmap *idmap, } } - generic_fillattr(&nop_mnt_idmap, inode, stat); + generic_fillattr(&nop_mnt_idmap, request_mask, inode, stat); return 0; } diff --git a/fs/proc/inode.c b/fs/proc/inode.c index 67b09a1d9433..532dc9d240f7 100644 --- a/fs/proc/inode.c +++ b/fs/proc/inode.c @@ -660,7 +660,7 @@ struct inode *proc_get_inode(struct super_block *sb, struct proc_dir_entry *de) inode->i_private = de->data; inode->i_ino = de->low_ino; - inode->i_mtime = inode->i_atime = inode->i_ctime = current_time(inode); + inode->i_mtime = inode->i_atime = inode_set_ctime_current(inode); PROC_I(inode)->pde = de; if (is_empty_pde(de)) { make_empty_dir_inode(inode); diff --git a/fs/proc/proc_net.c b/fs/proc/proc_net.c index a0c0419872e3..2ba31b6d68c0 100644 --- a/fs/proc/proc_net.c +++ b/fs/proc/proc_net.c @@ -308,7 +308,7 @@ static int proc_tgid_net_getattr(struct mnt_idmap *idmap, net = get_proc_task_net(inode); - generic_fillattr(&nop_mnt_idmap, inode, stat); + generic_fillattr(&nop_mnt_idmap, request_mask, inode, stat); if (net != NULL) { stat->nlink = net->proc_net->nlink; @@ -321,6 +321,7 @@ static int proc_tgid_net_getattr(struct mnt_idmap *idmap, const struct inode_operations proc_net_inode_operations = { .lookup = proc_tgid_net_lookup, .getattr = proc_tgid_net_getattr, + .setattr = proc_setattr, }; static int proc_tgid_net_readdir(struct file *file, struct dir_context *ctx) diff --git a/fs/proc/proc_sysctl.c b/fs/proc/proc_sysctl.c index 5ea42653126e..c88854df0b62 100644 --- a/fs/proc/proc_sysctl.c +++ b/fs/proc/proc_sysctl.c @@ -19,8 +19,9 @@ #include <linux/kmemleak.h> #include "internal.h" -#define list_for_each_table_entry(entry, table) \ - for ((entry) = (table); (entry)->procname; (entry)++) +#define list_for_each_table_entry(entry, header) \ + entry = header->ctl_table; \ + for (size_t i = 0 ; i < header->ctl_table_size && entry->procname; ++i, entry++) static const struct dentry_operations proc_sys_dentry_operations; static const struct file_operations proc_sys_file_operations; @@ -43,7 +44,7 @@ static struct ctl_table sysctl_mount_point[] = { */ struct ctl_table_header *register_sysctl_mount_point(const char *path) { - return register_sysctl(path, sysctl_mount_point); + return register_sysctl_sz(path, sysctl_mount_point, 0); } EXPORT_SYMBOL(register_sysctl_mount_point); @@ -188,9 +189,10 @@ static void erase_entry(struct ctl_table_header *head, struct ctl_table *entry) static void init_header(struct ctl_table_header *head, struct ctl_table_root *root, struct ctl_table_set *set, - struct ctl_node *node, struct ctl_table *table) + struct ctl_node *node, struct ctl_table *table, size_t table_size) { head->ctl_table = table; + head->ctl_table_size = table_size; head->ctl_table_arg = table; head->used = 0; head->count = 1; @@ -204,7 +206,7 @@ static void init_header(struct ctl_table_header *head, if (node) { struct ctl_table *entry; - list_for_each_table_entry(entry, table) { + list_for_each_table_entry(entry, head) { node->header = head; node++; } @@ -215,7 +217,7 @@ static void erase_header(struct ctl_table_header *head) { struct ctl_table *entry; - list_for_each_table_entry(entry, head->ctl_table) + list_for_each_table_entry(entry, head) erase_entry(head, entry); } @@ -242,7 +244,7 @@ static int insert_header(struct ctl_dir *dir, struct ctl_table_header *header) err = insert_links(header); if (err) goto fail_links; - list_for_each_table_entry(entry, header->ctl_table) { + list_for_each_table_entry(entry, header) { err = insert_entry(header, entry); if (err) goto fail; @@ -463,7 +465,7 @@ static struct inode *proc_sys_make_inode(struct super_block *sb, head->count++; spin_unlock(&sysctl_lock); - inode->i_mtime = inode->i_atime = inode->i_ctime = current_time(inode); + inode->i_mtime = inode->i_atime = inode_set_ctime_current(inode); inode->i_mode = table->mode; if (!S_ISDIR(table->mode)) { inode->i_mode |= S_IFREG; @@ -849,7 +851,7 @@ static int proc_sys_getattr(struct mnt_idmap *idmap, if (IS_ERR(head)) return PTR_ERR(head); - generic_fillattr(&nop_mnt_idmap, inode, stat); + generic_fillattr(&nop_mnt_idmap, request_mask, inode, stat); if (table) stat->mode = (stat->mode & S_IFMT) | table->mode; @@ -973,7 +975,7 @@ static struct ctl_dir *new_dir(struct ctl_table_set *set, memcpy(new_name, name, namelen); table[0].procname = new_name; table[0].mode = S_IFDIR|S_IRUGO|S_IXUGO; - init_header(&new->header, set->dir.header.root, set, node, table); + init_header(&new->header, set->dir.header.root, set, node, table, 1); return new; } @@ -1125,11 +1127,11 @@ static int sysctl_check_table_array(const char *path, struct ctl_table *table) return err; } -static int sysctl_check_table(const char *path, struct ctl_table *table) +static int sysctl_check_table(const char *path, struct ctl_table_header *header) { struct ctl_table *entry; int err = 0; - list_for_each_table_entry(entry, table) { + list_for_each_table_entry(entry, header) { if ((entry->proc_handler == proc_dostring) || (entry->proc_handler == proc_dobool) || (entry->proc_handler == proc_dointvec) || @@ -1159,8 +1161,7 @@ static int sysctl_check_table(const char *path, struct ctl_table *table) return err; } -static struct ctl_table_header *new_links(struct ctl_dir *dir, struct ctl_table *table, - struct ctl_table_root *link_root) +static struct ctl_table_header *new_links(struct ctl_dir *dir, struct ctl_table_header *head) { struct ctl_table *link_table, *entry, *link; struct ctl_table_header *links; @@ -1170,7 +1171,7 @@ static struct ctl_table_header *new_links(struct ctl_dir *dir, struct ctl_table name_bytes = 0; nr_entries = 0; - list_for_each_table_entry(entry, table) { + list_for_each_table_entry(entry, head) { nr_entries++; name_bytes += strlen(entry->procname) + 1; } @@ -1189,31 +1190,33 @@ static struct ctl_table_header *new_links(struct ctl_dir *dir, struct ctl_table link_name = (char *)&link_table[nr_entries + 1]; link = link_table; - list_for_each_table_entry(entry, table) { + list_for_each_table_entry(entry, head) { int len = strlen(entry->procname) + 1; memcpy(link_name, entry->procname, len); link->procname = link_name; link->mode = S_IFLNK|S_IRWXUGO; - link->data = link_root; + link->data = head->root; link_name += len; link++; } - init_header(links, dir->header.root, dir->header.set, node, link_table); + init_header(links, dir->header.root, dir->header.set, node, link_table, + head->ctl_table_size); links->nreg = nr_entries; return links; } static bool get_links(struct ctl_dir *dir, - struct ctl_table *table, struct ctl_table_root *link_root) + struct ctl_table_header *header, + struct ctl_table_root *link_root) { - struct ctl_table_header *head; + struct ctl_table_header *tmp_head; struct ctl_table *entry, *link; /* Are there links available for every entry in table? */ - list_for_each_table_entry(entry, table) { + list_for_each_table_entry(entry, header) { const char *procname = entry->procname; - link = find_entry(&head, dir, procname, strlen(procname)); + link = find_entry(&tmp_head, dir, procname, strlen(procname)); if (!link) return false; if (S_ISDIR(link->mode) && S_ISDIR(entry->mode)) @@ -1224,10 +1227,10 @@ static bool get_links(struct ctl_dir *dir, } /* The checks passed. Increase the registration count on the links */ - list_for_each_table_entry(entry, table) { + list_for_each_table_entry(entry, header) { const char *procname = entry->procname; - link = find_entry(&head, dir, procname, strlen(procname)); - head->nreg++; + link = find_entry(&tmp_head, dir, procname, strlen(procname)); + tmp_head->nreg++; } return true; } @@ -1246,13 +1249,13 @@ static int insert_links(struct ctl_table_header *head) if (IS_ERR(core_parent)) return 0; - if (get_links(core_parent, head->ctl_table, head->root)) + if (get_links(core_parent, head, head->root)) return 0; core_parent->header.nreg++; spin_unlock(&sysctl_lock); - links = new_links(core_parent, head->ctl_table, head->root); + links = new_links(core_parent, head); spin_lock(&sysctl_lock); err = -ENOMEM; @@ -1260,7 +1263,7 @@ static int insert_links(struct ctl_table_header *head) goto out; err = 0; - if (get_links(core_parent, head->ctl_table, head->root)) { + if (get_links(core_parent, head, head->root)) { kfree(links); goto out; } @@ -1310,6 +1313,7 @@ static struct ctl_dir *sysctl_mkdir_p(struct ctl_dir *dir, const char *path) * should not be free'd after registration. So it should not be * used on stack. It can either be a global or dynamically allocated * by the caller and free'd later after sysctl unregistration. + * @table_size : The number of elements in table * * Register a sysctl table hierarchy. @table should be a filled in ctl_table * array. A completely 0 filled entry terminates the table. @@ -1352,26 +1356,21 @@ static struct ctl_dir *sysctl_mkdir_p(struct ctl_dir *dir, const char *path) */ struct ctl_table_header *__register_sysctl_table( struct ctl_table_set *set, - const char *path, struct ctl_table *table) + const char *path, struct ctl_table *table, size_t table_size) { struct ctl_table_root *root = set->dir.header.root; struct ctl_table_header *header; struct ctl_dir *dir; - struct ctl_table *entry; struct ctl_node *node; - int nr_entries = 0; - - list_for_each_table_entry(entry, table) - nr_entries++; header = kzalloc(sizeof(struct ctl_table_header) + - sizeof(struct ctl_node)*nr_entries, GFP_KERNEL_ACCOUNT); + sizeof(struct ctl_node)*table_size, GFP_KERNEL_ACCOUNT); if (!header) return NULL; node = (struct ctl_node *)(header + 1); - init_header(header, root, set, node, table); - if (sysctl_check_table(path, table)) + init_header(header, root, set, node, table, table_size); + if (sysctl_check_table(path, header)) goto fail; spin_lock(&sysctl_lock); @@ -1401,7 +1400,7 @@ fail: } /** - * register_sysctl - register a sysctl table + * register_sysctl_sz - register a sysctl table * @path: The path to the directory the sysctl table is in. If the path * doesn't exist we will create it for you. * @table: the table structure. The calller must ensure the life of the @table @@ -1411,18 +1410,20 @@ fail: * to call unregister_sysctl_table() and can instead use something like * register_sysctl_init() which does not care for the result of the syctl * registration. + * @table_size: The number of elements in table. * * Register a sysctl table. @table should be a filled in ctl_table * array. A completely 0 filled entry terminates the table. * * See __register_sysctl_table for more details. */ -struct ctl_table_header *register_sysctl(const char *path, struct ctl_table *table) +struct ctl_table_header *register_sysctl_sz(const char *path, struct ctl_table *table, + size_t table_size) { return __register_sysctl_table(&sysctl_table_root.default_set, - path, table); + path, table, table_size); } -EXPORT_SYMBOL(register_sysctl); +EXPORT_SYMBOL(register_sysctl_sz); /** * __register_sysctl_init() - register sysctl table to path @@ -1433,6 +1434,7 @@ EXPORT_SYMBOL(register_sysctl); * lifetime use of the sysctl. * @table_name: The name of sysctl table, only used for log printing when * registration fails + * @table_size: The number of elements in table * * The sysctl interface is used by userspace to query or modify at runtime * a predefined value set on a variable. These variables however have default @@ -1445,12 +1447,12 @@ EXPORT_SYMBOL(register_sysctl); * Context: if your base directory does not exist it will be created for you. */ void __init __register_sysctl_init(const char *path, struct ctl_table *table, - const char *table_name) + const char *table_name, size_t table_size) { - struct ctl_table_header *hdr = register_sysctl(path, table); + struct ctl_table_header *hdr = register_sysctl_sz(path, table, table_size); if (unlikely(!hdr)) { - pr_err("failed when register_sysctl %s to %s\n", table_name, path); + pr_err("failed when register_sysctl_sz %s to %s\n", table_name, path); return; } kmemleak_not_leak(hdr); @@ -1471,7 +1473,7 @@ static void put_links(struct ctl_table_header *header) if (IS_ERR(core_parent)) return; - list_for_each_table_entry(entry, header->ctl_table) { + list_for_each_table_entry(entry, header) { struct ctl_table_header *link_head; struct ctl_table *link; const char *name = entry->procname; @@ -1535,7 +1537,7 @@ void setup_sysctl_set(struct ctl_table_set *set, { memset(set, 0, sizeof(*set)); set->is_seen = is_seen; - init_header(&set->dir.header, root, set, NULL, root_table); + init_header(&set->dir.header, root, set, NULL, root_table, 1); } void retire_sysctl_set(struct ctl_table_set *set) diff --git a/fs/proc/root.c b/fs/proc/root.c index a86e65a608da..9191248f2dac 100644 --- a/fs/proc/root.c +++ b/fs/proc/root.c @@ -314,7 +314,8 @@ static int proc_root_getattr(struct mnt_idmap *idmap, const struct path *path, struct kstat *stat, u32 request_mask, unsigned int query_flags) { - generic_fillattr(&nop_mnt_idmap, d_inode(path->dentry), stat); + generic_fillattr(&nop_mnt_idmap, request_mask, d_inode(path->dentry), + stat); stat->nlink = proc_root.nlink + nr_processes(); return 0; } diff --git a/fs/proc/self.c b/fs/proc/self.c index 72cd69bcaf4a..ecc4da8d265e 100644 --- a/fs/proc/self.c +++ b/fs/proc/self.c @@ -46,7 +46,7 @@ int proc_setup_self(struct super_block *s) struct inode *inode = new_inode(s); if (inode) { inode->i_ino = self_inum; - inode->i_mtime = inode->i_atime = inode->i_ctime = current_time(inode); + inode->i_mtime = inode->i_atime = inode_set_ctime_current(inode); inode->i_mode = S_IFLNK | S_IRWXUGO; inode->i_uid = GLOBAL_ROOT_UID; inode->i_gid = GLOBAL_ROOT_GID; diff --git a/fs/proc/task_mmu.c b/fs/proc/task_mmu.c index 5fc732cb2350..3dd5be96691b 100644 --- a/fs/proc/task_mmu.c +++ b/fs/proc/task_mmu.c @@ -697,6 +697,9 @@ static void show_smap_vma_flags(struct seq_file *m, struct vm_area_struct *vma) #ifdef CONFIG_HAVE_ARCH_USERFAULTFD_MINOR [ilog2(VM_UFFD_MINOR)] = "ui", #endif /* CONFIG_HAVE_ARCH_USERFAULTFD_MINOR */ +#ifdef CONFIG_X86_USER_SHADOW_STACK + [ilog2(VM_SHADOW_STACK)] = "ss", +#endif }; size_t i; diff --git a/fs/proc/thread_self.c b/fs/proc/thread_self.c index a553273fbd41..63ac1f93289f 100644 --- a/fs/proc/thread_self.c +++ b/fs/proc/thread_self.c @@ -46,7 +46,7 @@ int proc_setup_thread_self(struct super_block *s) struct inode *inode = new_inode(s); if (inode) { inode->i_ino = thread_self_inum; - inode->i_mtime = inode->i_atime = inode->i_ctime = current_time(inode); + inode->i_mtime = inode->i_atime = inode_set_ctime_current(inode); inode->i_mode = S_IFLNK | S_IRWXUGO; inode->i_uid = GLOBAL_ROOT_UID; inode->i_gid = GLOBAL_ROOT_GID; diff --git a/fs/pstore/Kconfig b/fs/pstore/Kconfig index c49d554cc9ae..3acc38600cd1 100644 --- a/fs/pstore/Kconfig +++ b/fs/pstore/Kconfig @@ -1,7 +1,6 @@ # SPDX-License-Identifier: GPL-2.0-only config PSTORE tristate "Persistent store support" - select CRYPTO if PSTORE_COMPRESS default n help This option enables generic access to platform level @@ -22,99 +21,18 @@ config PSTORE_DEFAULT_KMSG_BYTES Defines default size of pstore kernel log storage. Can be enlarged if needed, not recommended to shrink it. -config PSTORE_DEFLATE_COMPRESS - tristate "DEFLATE (ZLIB) compression" - default y - depends on PSTORE - select CRYPTO_DEFLATE - help - This option enables DEFLATE (also known as ZLIB) compression - algorithm support. - -config PSTORE_LZO_COMPRESS - tristate "LZO compression" - depends on PSTORE - select CRYPTO_LZO - help - This option enables LZO compression algorithm support. - -config PSTORE_LZ4_COMPRESS - tristate "LZ4 compression" - depends on PSTORE - select CRYPTO_LZ4 - help - This option enables LZ4 compression algorithm support. - -config PSTORE_LZ4HC_COMPRESS - tristate "LZ4HC compression" - depends on PSTORE - select CRYPTO_LZ4HC - help - This option enables LZ4HC (high compression) mode algorithm. - -config PSTORE_842_COMPRESS - bool "842 compression" - depends on PSTORE - select CRYPTO_842 - help - This option enables 842 compression algorithm support. - -config PSTORE_ZSTD_COMPRESS - bool "zstd compression" - depends on PSTORE - select CRYPTO_ZSTD - help - This option enables zstd compression algorithm support. - config PSTORE_COMPRESS - def_bool y + bool "Pstore compression (deflate)" depends on PSTORE - depends on PSTORE_DEFLATE_COMPRESS || PSTORE_LZO_COMPRESS || \ - PSTORE_LZ4_COMPRESS || PSTORE_LZ4HC_COMPRESS || \ - PSTORE_842_COMPRESS || PSTORE_ZSTD_COMPRESS - -choice - prompt "Default pstore compression algorithm" - depends on PSTORE_COMPRESS + select ZLIB_INFLATE + select ZLIB_DEFLATE + default y help - This option chooses the default active compression algorithm. - This change be changed at boot with "pstore.compress=..." on - the kernel command line. - - Currently, pstore has support for 6 compression algorithms: - deflate, lzo, lz4, lz4hc, 842 and zstd. - - The default compression algorithm is deflate. - - config PSTORE_DEFLATE_COMPRESS_DEFAULT - bool "deflate" if PSTORE_DEFLATE_COMPRESS - - config PSTORE_LZO_COMPRESS_DEFAULT - bool "lzo" if PSTORE_LZO_COMPRESS - - config PSTORE_LZ4_COMPRESS_DEFAULT - bool "lz4" if PSTORE_LZ4_COMPRESS - - config PSTORE_LZ4HC_COMPRESS_DEFAULT - bool "lz4hc" if PSTORE_LZ4HC_COMPRESS - - config PSTORE_842_COMPRESS_DEFAULT - bool "842" if PSTORE_842_COMPRESS - - config PSTORE_ZSTD_COMPRESS_DEFAULT - bool "zstd" if PSTORE_ZSTD_COMPRESS - -endchoice - -config PSTORE_COMPRESS_DEFAULT - string - depends on PSTORE_COMPRESS - default "deflate" if PSTORE_DEFLATE_COMPRESS_DEFAULT - default "lzo" if PSTORE_LZO_COMPRESS_DEFAULT - default "lz4" if PSTORE_LZ4_COMPRESS_DEFAULT - default "lz4hc" if PSTORE_LZ4HC_COMPRESS_DEFAULT - default "842" if PSTORE_842_COMPRESS_DEFAULT - default "zstd" if PSTORE_ZSTD_COMPRESS_DEFAULT + Whether pstore records should be compressed before being written to + the backing store. This is implemented using the zlib 'deflate' + algorithm, using the library implementation instead of using the full + blown crypto API. This reduces the risk of secondary oopses or other + problems while pstore is recording panic metadata. config PSTORE_CONSOLE bool "Log kernel console messages" diff --git a/fs/pstore/inode.c b/fs/pstore/inode.c index ffbadb8b3032..585360706b33 100644 --- a/fs/pstore/inode.c +++ b/fs/pstore/inode.c @@ -54,7 +54,7 @@ static void free_pstore_private(struct pstore_private *private) if (!private) return; if (private->record) { - kfree(private->record->buf); + kvfree(private->record->buf); kfree(private->record->priv); kfree(private->record); } @@ -223,7 +223,7 @@ static struct inode *pstore_get_inode(struct super_block *sb) struct inode *inode = new_inode(sb); if (inode) { inode->i_ino = get_next_ino(); - inode->i_atime = inode->i_mtime = inode->i_ctime = current_time(inode); + inode->i_atime = inode->i_mtime = inode_set_ctime_current(inode); } return inode; } @@ -390,7 +390,7 @@ int pstore_mkfile(struct dentry *root, struct pstore_record *record) inode->i_private = private; if (record->time.tv_sec) - inode->i_mtime = inode->i_ctime = record->time; + inode->i_mtime = inode_set_ctime_to_ts(inode, record->time); d_add(dentry, inode); diff --git a/fs/pstore/platform.c b/fs/pstore/platform.c index cbc0b468c1ab..e5bca9a004cc 100644 --- a/fs/pstore/platform.c +++ b/fs/pstore/platform.c @@ -14,24 +14,17 @@ #include <linux/init.h> #include <linux/kmsg_dump.h> #include <linux/console.h> +#include <linux/mm.h> #include <linux/module.h> #include <linux/pstore.h> -#if IS_ENABLED(CONFIG_PSTORE_LZO_COMPRESS) -#include <linux/lzo.h> -#endif -#if IS_ENABLED(CONFIG_PSTORE_LZ4_COMPRESS) || IS_ENABLED(CONFIG_PSTORE_LZ4HC_COMPRESS) -#include <linux/lz4.h> -#endif -#if IS_ENABLED(CONFIG_PSTORE_ZSTD_COMPRESS) -#include <linux/zstd.h> -#endif -#include <linux/crypto.h> #include <linux/string.h> #include <linux/timer.h> #include <linux/slab.h> #include <linux/uaccess.h> #include <linux/jiffies.h> +#include <linux/vmalloc.h> #include <linux/workqueue.h> +#include <linux/zlib.h> #include "internal.h" @@ -80,12 +73,21 @@ static char *backend; module_param(backend, charp, 0444); MODULE_PARM_DESC(backend, "specific backend to use"); -static char *compress = -#ifdef CONFIG_PSTORE_COMPRESS_DEFAULT - CONFIG_PSTORE_COMPRESS_DEFAULT; -#else - NULL; -#endif +/* + * pstore no longer implements compression via the crypto API, and only + * supports zlib deflate compression implemented using the zlib library + * interface. This removes additional complexity which is hard to justify for a + * diagnostic facility that has to operate in conditions where the system may + * have become unstable. Zlib deflate is comparatively small in terms of code + * size, and compresses ASCII text comparatively well. In terms of compression + * speed, deflate is not the best performer but for recording the log output on + * a kernel panic, this is not considered critical. + * + * The only remaining arguments supported by the compress= module parameter are + * 'deflate' and 'none'. To retain compatibility with existing installations, + * all other values are logged and replaced with 'deflate'. + */ +static char *compress = "deflate"; module_param(compress, charp, 0444); MODULE_PARM_DESC(compress, "compression to use"); @@ -94,16 +96,16 @@ unsigned long kmsg_bytes = CONFIG_PSTORE_DEFAULT_KMSG_BYTES; module_param(kmsg_bytes, ulong, 0444); MODULE_PARM_DESC(kmsg_bytes, "amount of kernel log to snapshot (in bytes)"); -/* Compression parameters */ -static struct crypto_comp *tfm; +static void *compress_workspace; -struct pstore_zbackend { - int (*zbufsize)(size_t size); - const char *name; -}; +/* + * Compression is only used for dmesg output, which consists of low-entropy + * ASCII text, and so we can assume worst-case 60%. + */ +#define DMESG_COMP_PERCENT 60 static char *big_oops_buf; -static size_t big_oops_buf_sz; +static size_t max_compressed_size; void pstore_set_kmsg_bytes(int bytes) { @@ -168,206 +170,93 @@ static bool pstore_cannot_block_path(enum kmsg_dump_reason reason) } } -#if IS_ENABLED(CONFIG_PSTORE_DEFLATE_COMPRESS) -static int zbufsize_deflate(size_t size) -{ - size_t cmpr; - - switch (size) { - /* buffer range for efivars */ - case 1000 ... 2000: - cmpr = 56; - break; - case 2001 ... 3000: - cmpr = 54; - break; - case 3001 ... 3999: - cmpr = 52; - break; - /* buffer range for nvram, erst */ - case 4000 ... 10000: - cmpr = 45; - break; - default: - cmpr = 60; - break; - } - - return (size * 100) / cmpr; -} -#endif - -#if IS_ENABLED(CONFIG_PSTORE_LZO_COMPRESS) -static int zbufsize_lzo(size_t size) -{ - return lzo1x_worst_compress(size); -} -#endif - -#if IS_ENABLED(CONFIG_PSTORE_LZ4_COMPRESS) || IS_ENABLED(CONFIG_PSTORE_LZ4HC_COMPRESS) -static int zbufsize_lz4(size_t size) -{ - return LZ4_compressBound(size); -} -#endif - -#if IS_ENABLED(CONFIG_PSTORE_842_COMPRESS) -static int zbufsize_842(size_t size) -{ - return size; -} -#endif - -#if IS_ENABLED(CONFIG_PSTORE_ZSTD_COMPRESS) -static int zbufsize_zstd(size_t size) -{ - return zstd_compress_bound(size); -} -#endif - -static const struct pstore_zbackend *zbackend __ro_after_init; - -static const struct pstore_zbackend zbackends[] = { -#if IS_ENABLED(CONFIG_PSTORE_DEFLATE_COMPRESS) - { - .zbufsize = zbufsize_deflate, - .name = "deflate", - }, -#endif -#if IS_ENABLED(CONFIG_PSTORE_LZO_COMPRESS) - { - .zbufsize = zbufsize_lzo, - .name = "lzo", - }, -#endif -#if IS_ENABLED(CONFIG_PSTORE_LZ4_COMPRESS) - { - .zbufsize = zbufsize_lz4, - .name = "lz4", - }, -#endif -#if IS_ENABLED(CONFIG_PSTORE_LZ4HC_COMPRESS) - { - .zbufsize = zbufsize_lz4, - .name = "lz4hc", - }, -#endif -#if IS_ENABLED(CONFIG_PSTORE_842_COMPRESS) - { - .zbufsize = zbufsize_842, - .name = "842", - }, -#endif -#if IS_ENABLED(CONFIG_PSTORE_ZSTD_COMPRESS) - { - .zbufsize = zbufsize_zstd, - .name = "zstd", - }, -#endif - { } -}; - static int pstore_compress(const void *in, void *out, unsigned int inlen, unsigned int outlen) { + struct z_stream_s zstream = { + .next_in = in, + .avail_in = inlen, + .next_out = out, + .avail_out = outlen, + .workspace = compress_workspace, + }; int ret; if (!IS_ENABLED(CONFIG_PSTORE_COMPRESS)) return -EINVAL; - ret = crypto_comp_compress(tfm, in, inlen, out, &outlen); - if (ret) { - pr_err("crypto_comp_compress failed, ret = %d!\n", ret); - return ret; - } + ret = zlib_deflateInit2(&zstream, Z_DEFAULT_COMPRESSION, Z_DEFLATED, + -MAX_WBITS, DEF_MEM_LEVEL, Z_DEFAULT_STRATEGY); + if (ret != Z_OK) + return -EINVAL; - return outlen; + ret = zlib_deflate(&zstream, Z_FINISH); + if (ret != Z_STREAM_END) + return -EINVAL; + + ret = zlib_deflateEnd(&zstream); + if (ret != Z_OK) + pr_warn_once("zlib_deflateEnd() failed: %d\n", ret); + + return zstream.total_out; } static void allocate_buf_for_compression(void) { - struct crypto_comp *ctx; - int size; + size_t compressed_size; char *buf; - /* Skip if not built-in or compression backend not selected yet. */ - if (!IS_ENABLED(CONFIG_PSTORE_COMPRESS) || !zbackend) - return; - - /* Skip if no pstore backend yet or compression init already done. */ - if (!psinfo || tfm) - return; - - if (!crypto_has_comp(zbackend->name, 0, 0)) { - pr_err("Unknown compression: %s\n", zbackend->name); + /* Skip if not built-in or compression disabled. */ + if (!IS_ENABLED(CONFIG_PSTORE_COMPRESS) || !compress || + !strcmp(compress, "none")) { + compress = NULL; return; } - size = zbackend->zbufsize(psinfo->bufsize); - if (size <= 0) { - pr_err("Invalid compression size for %s: %d\n", - zbackend->name, size); - return; + if (strcmp(compress, "deflate")) { + pr_err("Unsupported compression '%s', falling back to deflate\n", + compress); + compress = "deflate"; } - buf = kmalloc(size, GFP_KERNEL); + /* + * The compression buffer only needs to be as large as the maximum + * uncompressed record size, since any record that would be expanded by + * compression is just stored uncompressed. + */ + compressed_size = (psinfo->bufsize * 100) / DMESG_COMP_PERCENT; + buf = kvzalloc(compressed_size, GFP_KERNEL); if (!buf) { - pr_err("Failed %d byte compression buffer allocation for: %s\n", - size, zbackend->name); + pr_err("Failed %zu byte compression buffer allocation for: %s\n", + psinfo->bufsize, compress); return; } - ctx = crypto_alloc_comp(zbackend->name, 0, 0); - if (IS_ERR_OR_NULL(ctx)) { - kfree(buf); - pr_err("crypto_alloc_comp('%s') failed: %ld\n", zbackend->name, - PTR_ERR(ctx)); + compress_workspace = + vmalloc(zlib_deflate_workspacesize(MAX_WBITS, DEF_MEM_LEVEL)); + if (!compress_workspace) { + pr_err("Failed to allocate zlib deflate workspace\n"); + kvfree(buf); return; } /* A non-NULL big_oops_buf indicates compression is available. */ - tfm = ctx; - big_oops_buf_sz = size; big_oops_buf = buf; + max_compressed_size = compressed_size; - pr_info("Using crash dump compression: %s\n", zbackend->name); + pr_info("Using crash dump compression: %s\n", compress); } static void free_buf_for_compression(void) { - if (IS_ENABLED(CONFIG_PSTORE_COMPRESS) && tfm) { - crypto_free_comp(tfm); - tfm = NULL; + if (IS_ENABLED(CONFIG_PSTORE_COMPRESS) && compress_workspace) { + vfree(compress_workspace); + compress_workspace = NULL; } - kfree(big_oops_buf); - big_oops_buf = NULL; - big_oops_buf_sz = 0; -} -/* - * Called when compression fails, since the printk buffer - * would be fetched for compression calling it again when - * compression fails would have moved the iterator of - * printk buffer which results in fetching old contents. - * Copy the recent messages from big_oops_buf to psinfo->buf - */ -static size_t copy_kmsg_to_buffer(int hsize, size_t len) -{ - size_t total_len; - size_t diff; - - total_len = hsize + len; - - if (total_len > psinfo->bufsize) { - diff = total_len - psinfo->bufsize + hsize; - memcpy(psinfo->buf, big_oops_buf, hsize); - memcpy(psinfo->buf + hsize, big_oops_buf + diff, - psinfo->bufsize - hsize); - total_len = psinfo->bufsize; - } else - memcpy(psinfo->buf, big_oops_buf, total_len); - - return total_len; + kvfree(big_oops_buf); + big_oops_buf = NULL; + max_compressed_size = 0; } void pstore_record_init(struct pstore_record *record, @@ -426,13 +315,8 @@ static void pstore_dump(struct kmsg_dumper *dumper, record.part = part; record.buf = psinfo->buf; - if (big_oops_buf) { - dst = big_oops_buf; - dst_size = big_oops_buf_sz; - } else { - dst = psinfo->buf; - dst_size = psinfo->bufsize; - } + dst = big_oops_buf ?: psinfo->buf; + dst_size = max_compressed_size ?: psinfo->bufsize; /* Write dump header. */ header_size = snprintf(dst, dst_size, "%s#%d Part%u\n", why, @@ -453,8 +337,15 @@ static void pstore_dump(struct kmsg_dumper *dumper, record.compressed = true; record.size = zipped_len; } else { - record.size = copy_kmsg_to_buffer(header_size, - dump_size); + /* + * Compression failed, so the buffer is most + * likely filled with binary data that does not + * compress as well as ASCII text. Copy as much + * of the uncompressed data as possible into + * the pstore record, and discard the rest. + */ + record.size = psinfo->bufsize; + memcpy(psinfo->buf, dst, psinfo->bufsize); } } else { record.size = header_size + dump_size; @@ -549,7 +440,7 @@ static int pstore_write_user_compat(struct pstore_record *record, if (record->buf) return -EINVAL; - record->buf = memdup_user(buf, record->size); + record->buf = vmemdup_user(buf, record->size); if (IS_ERR(record->buf)) { ret = PTR_ERR(record->buf); goto out; @@ -557,7 +448,7 @@ static int pstore_write_user_compat(struct pstore_record *record, ret = record->psi->write(record); - kfree(record->buf); + kvfree(record->buf); out: record->buf = NULL; @@ -681,11 +572,13 @@ void pstore_unregister(struct pstore_info *psi) } EXPORT_SYMBOL_GPL(pstore_unregister); -static void decompress_record(struct pstore_record *record) +static void decompress_record(struct pstore_record *record, + struct z_stream_s *zstream) { int ret; int unzipped_len; char *unzipped, *workspace; + size_t max_uncompressed_size; if (!IS_ENABLED(CONFIG_PSTORE_COMPRESS) || !record->compressed) return; @@ -697,40 +590,51 @@ static void decompress_record(struct pstore_record *record) } /* Missing compression buffer means compression was not initialized. */ - if (!big_oops_buf) { + if (!zstream->workspace) { pr_warn("no decompression method initialized!\n"); return; } + ret = zlib_inflateReset(zstream); + if (ret != Z_OK) { + pr_err("zlib_inflateReset() failed, ret = %d!\n", ret); + return; + } + /* Allocate enough space to hold max decompression and ECC. */ - unzipped_len = big_oops_buf_sz; - workspace = kmalloc(unzipped_len + record->ecc_notice_size, - GFP_KERNEL); + max_uncompressed_size = 3 * psinfo->bufsize; + workspace = kvzalloc(max_uncompressed_size + record->ecc_notice_size, + GFP_KERNEL); if (!workspace) return; - /* After decompression "unzipped_len" is almost certainly smaller. */ - ret = crypto_comp_decompress(tfm, record->buf, record->size, - workspace, &unzipped_len); - if (ret) { - pr_err("crypto_comp_decompress failed, ret = %d!\n", ret); - kfree(workspace); + zstream->next_in = record->buf; + zstream->avail_in = record->size; + zstream->next_out = workspace; + zstream->avail_out = max_uncompressed_size; + + ret = zlib_inflate(zstream, Z_FINISH); + if (ret != Z_STREAM_END) { + pr_err_ratelimited("zlib_inflate() failed, ret = %d!\n", ret); + kvfree(workspace); return; } + unzipped_len = zstream->total_out; + /* Append ECC notice to decompressed buffer. */ memcpy(workspace + unzipped_len, record->buf + record->size, record->ecc_notice_size); /* Copy decompressed contents into an minimum-sized allocation. */ - unzipped = kmemdup(workspace, unzipped_len + record->ecc_notice_size, - GFP_KERNEL); - kfree(workspace); + unzipped = kvmemdup(workspace, unzipped_len + record->ecc_notice_size, + GFP_KERNEL); + kvfree(workspace); if (!unzipped) return; /* Swap out compressed contents with decompressed contents. */ - kfree(record->buf); + kvfree(record->buf); record->buf = unzipped; record->size = unzipped_len; record->compressed = false; @@ -747,10 +651,17 @@ void pstore_get_backend_records(struct pstore_info *psi, { int failed = 0; unsigned int stop_loop = 65536; + struct z_stream_s zstream = {}; if (!psi || !root) return; + if (IS_ENABLED(CONFIG_PSTORE_COMPRESS) && compress) { + zstream.workspace = kvmalloc(zlib_inflate_workspacesize(), + GFP_KERNEL); + zlib_inflateInit2(&zstream, -DEF_WBITS); + } + mutex_lock(&psi->read_mutex); if (psi->open && psi->open(psi)) goto out; @@ -779,11 +690,11 @@ void pstore_get_backend_records(struct pstore_info *psi, break; } - decompress_record(record); + decompress_record(record, &zstream); rc = pstore_mkfile(root, record); if (rc) { /* pstore_mkfile() did not take record, so free it. */ - kfree(record->buf); + kvfree(record->buf); kfree(record->priv); kfree(record); if (rc != -EEXIST || !quiet) @@ -795,6 +706,12 @@ void pstore_get_backend_records(struct pstore_info *psi, out: mutex_unlock(&psi->read_mutex); + if (IS_ENABLED(CONFIG_PSTORE_COMPRESS) && compress) { + if (zlib_inflateEnd(&zstream) != Z_OK) + pr_warn("zlib_inflateEnd() failed\n"); + kvfree(zstream.workspace); + } + if (failed) pr_warn("failed to create %d record(s) from '%s'\n", failed, psi->name); @@ -818,34 +735,10 @@ static void pstore_timefunc(struct timer_list *unused) pstore_timer_kick(); } -static void __init pstore_choose_compression(void) -{ - const struct pstore_zbackend *step; - - if (!compress) - return; - - for (step = zbackends; step->name; step++) { - if (!strcmp(compress, step->name)) { - zbackend = step; - return; - } - } -} - static int __init pstore_init(void) { int ret; - pstore_choose_compression(); - - /* - * Check if any pstore backends registered earlier but did not - * initialize compression because crypto was not ready. If so, - * initialize compression now. - */ - allocate_buf_for_compression(); - ret = pstore_init_fs(); if (ret) free_buf_for_compression(); diff --git a/fs/pstore/ram.c b/fs/pstore/ram.c index 2f625e1fa8d8..d36702c7ab3c 100644 --- a/fs/pstore/ram.c +++ b/fs/pstore/ram.c @@ -20,6 +20,7 @@ #include <linux/compiler.h> #include <linux/of.h> #include <linux/of_address.h> +#include <linux/mm.h> #include "internal.h" #include "ram_internal.h" @@ -268,7 +269,7 @@ static ssize_t ramoops_pstore_read(struct pstore_record *record) /* ECC correction notice */ record->ecc_notice_size = persistent_ram_ecc_string(prz, NULL, 0); - record->buf = kmalloc(size + record->ecc_notice_size + 1, GFP_KERNEL); + record->buf = kvzalloc(size + record->ecc_notice_size + 1, GFP_KERNEL); if (record->buf == NULL) { size = -ENOMEM; goto out; @@ -282,7 +283,7 @@ static ssize_t ramoops_pstore_read(struct pstore_record *record) out: if (free_prz) { - kfree(prz->old_log); + kvfree(prz->old_log); kfree(prz); } @@ -833,7 +834,7 @@ static int ramoops_probe(struct platform_device *pdev) */ if (cxt->pstore.flags & PSTORE_FLAGS_DMESG) { cxt->pstore.bufsize = cxt->dprzs[0]->buffer_size; - cxt->pstore.buf = kzalloc(cxt->pstore.bufsize, GFP_KERNEL); + cxt->pstore.buf = kvzalloc(cxt->pstore.bufsize, GFP_KERNEL); if (!cxt->pstore.buf) { pr_err("cannot allocate pstore crash dump buffer\n"); err = -ENOMEM; @@ -866,7 +867,7 @@ static int ramoops_probe(struct platform_device *pdev) return 0; fail_buf: - kfree(cxt->pstore.buf); + kvfree(cxt->pstore.buf); fail_clear: cxt->pstore.bufsize = 0; fail_init: @@ -881,7 +882,7 @@ static void ramoops_remove(struct platform_device *pdev) pstore_unregister(&cxt->pstore); - kfree(cxt->pstore.buf); + kvfree(cxt->pstore.buf); cxt->pstore.bufsize = 0; ramoops_free_przs(cxt); diff --git a/fs/pstore/ram_core.c b/fs/pstore/ram_core.c index 85aaf0fc6d7d..650e437b55e6 100644 --- a/fs/pstore/ram_core.c +++ b/fs/pstore/ram_core.c @@ -17,6 +17,7 @@ #include <linux/slab.h> #include <linux/uaccess.h> #include <linux/vmalloc.h> +#include <linux/mm.h> #include <asm/page.h> #include "ram_internal.h" @@ -24,12 +25,10 @@ /** * struct persistent_ram_buffer - persistent circular RAM buffer * - * @sig: - * signature to indicate header (PERSISTENT_RAM_SIG xor PRZ-type value) - * @start: - * offset into @data where the beginning of the stored bytes begin - * @size: - * number of valid bytes stored in @data + * @sig: Signature to indicate header (PERSISTENT_RAM_SIG xor PRZ-type value) + * @start: First valid byte in the buffer. + * @size: Number of valid bytes in the buffer. + * @data: The contents of the buffer. */ struct persistent_ram_buffer { uint32_t sig; @@ -301,7 +300,7 @@ void persistent_ram_save_old(struct persistent_ram_zone *prz) if (!prz->old_log) { persistent_ram_ecc_old(prz); - prz->old_log = kmalloc(size, GFP_KERNEL); + prz->old_log = kvzalloc(size, GFP_KERNEL); } if (!prz->old_log) { pr_err("failed to allocate buffer\n"); @@ -385,7 +384,7 @@ void *persistent_ram_old(struct persistent_ram_zone *prz) void persistent_ram_free_old(struct persistent_ram_zone *prz) { - kfree(prz->old_log); + kvfree(prz->old_log); prz->old_log = NULL; prz->old_log_size = 0; } @@ -519,7 +518,7 @@ static int persistent_ram_post_init(struct persistent_ram_zone *prz, u32 sig, sig ^= PERSISTENT_RAM_SIG; if (prz->buffer->sig == sig) { - if (buffer_size(prz) == 0) { + if (buffer_size(prz) == 0 && buffer_start(prz) == 0) { pr_debug("found existing empty buffer\n"); return 0; } diff --git a/fs/qnx4/Kconfig b/fs/qnx4/Kconfig index 45b5b98376c4..a2eb826e76c6 100644 --- a/fs/qnx4/Kconfig +++ b/fs/qnx4/Kconfig @@ -2,6 +2,7 @@ config QNX4FS_FS tristate "QNX4 file system support (read only)" depends on BLOCK + select BUFFER_HEAD help This is the file system used by the real-time operating systems QNX 4 and QNX 6 (the latter is also called QNX RTP). diff --git a/fs/qnx4/inode.c b/fs/qnx4/inode.c index 391ea402920d..a7171f5532a1 100644 --- a/fs/qnx4/inode.c +++ b/fs/qnx4/inode.c @@ -305,8 +305,7 @@ struct inode *qnx4_iget(struct super_block *sb, unsigned long ino) inode->i_mtime.tv_nsec = 0; inode->i_atime.tv_sec = le32_to_cpu(raw_inode->di_atime); inode->i_atime.tv_nsec = 0; - inode->i_ctime.tv_sec = le32_to_cpu(raw_inode->di_ctime); - inode->i_ctime.tv_nsec = 0; + inode_set_ctime(inode, le32_to_cpu(raw_inode->di_ctime), 0); inode->i_blocks = le32_to_cpu(raw_inode->di_first_xtnt.xtnt_size); memcpy(qnx4_inode, raw_inode, QNX4_DIR_ENTRY_SIZE); diff --git a/fs/qnx6/Kconfig b/fs/qnx6/Kconfig index 6a9d6bce1586..8e865d72204e 100644 --- a/fs/qnx6/Kconfig +++ b/fs/qnx6/Kconfig @@ -2,6 +2,7 @@ config QNX6FS_FS tristate "QNX6 file system support (read only)" depends on BLOCK && CRC32 + select BUFFER_HEAD help This is the file system used by the real-time operating systems QNX 6 (also called QNX RTP). diff --git a/fs/qnx6/inode.c b/fs/qnx6/inode.c index 85b2fa3b211c..21f90d519f1a 100644 --- a/fs/qnx6/inode.c +++ b/fs/qnx6/inode.c @@ -562,8 +562,7 @@ struct inode *qnx6_iget(struct super_block *sb, unsigned ino) inode->i_mtime.tv_nsec = 0; inode->i_atime.tv_sec = fs32_to_cpu(sbi, raw_inode->di_atime); inode->i_atime.tv_nsec = 0; - inode->i_ctime.tv_sec = fs32_to_cpu(sbi, raw_inode->di_ctime); - inode->i_ctime.tv_nsec = 0; + inode_set_ctime(inode, fs32_to_cpu(sbi, raw_inode->di_ctime), 0); /* calc blocks based on 512 byte blocksize */ inode->i_blocks = (inode->i_size + 511) >> 9; diff --git a/fs/quota/dquot.c b/fs/quota/dquot.c index e3e4f4047657..9e72bfe8bbad 100644 --- a/fs/quota/dquot.c +++ b/fs/quota/dquot.c @@ -225,13 +225,22 @@ static void put_quota_format(struct quota_format_type *fmt) /* * Dquot List Management: - * The quota code uses four lists for dquot management: the inuse_list, - * free_dquots, dqi_dirty_list, and dquot_hash[] array. A single dquot - * structure may be on some of those lists, depending on its current state. + * The quota code uses five lists for dquot management: the inuse_list, + * releasing_dquots, free_dquots, dqi_dirty_list, and dquot_hash[] array. + * A single dquot structure may be on some of those lists, depending on + * its current state. * * All dquots are placed to the end of inuse_list when first created, and this * list is used for invalidate operation, which must look at every dquot. * + * When the last reference of a dquot will be dropped, the dquot will be + * added to releasing_dquots. We'd then queue work item which would call + * synchronize_srcu() and after that perform the final cleanup of all the + * dquots on the list. Both releasing_dquots and free_dquots use the + * dq_free list_head in the dquot struct. When a dquot is removed from + * releasing_dquots, a reference count is always subtracted, and if + * dq_count == 0 at that point, the dquot will be added to the free_dquots. + * * Unused dquots (dq_count == 0) are added to the free_dquots list when freed, * and this list is searched whenever we need an available dquot. Dquots are * removed from the list as soon as they are used again, and @@ -250,6 +259,7 @@ static void put_quota_format(struct quota_format_type *fmt) static LIST_HEAD(inuse_list); static LIST_HEAD(free_dquots); +static LIST_HEAD(releasing_dquots); static unsigned int dq_hash_bits, dq_hash_mask; static struct hlist_head *dquot_hash; @@ -260,6 +270,9 @@ static qsize_t inode_get_rsv_space(struct inode *inode); static qsize_t __inode_get_rsv_space(struct inode *inode); static int __dquot_initialize(struct inode *inode, int type); +static void quota_release_workfn(struct work_struct *work); +static DECLARE_DELAYED_WORK(quota_release_work, quota_release_workfn); + static inline unsigned int hashfn(const struct super_block *sb, struct kqid qid) { @@ -305,12 +318,18 @@ static inline void put_dquot_last(struct dquot *dquot) dqstats_inc(DQST_FREE_DQUOTS); } +static inline void put_releasing_dquots(struct dquot *dquot) +{ + list_add_tail(&dquot->dq_free, &releasing_dquots); +} + static inline void remove_free_dquot(struct dquot *dquot) { if (list_empty(&dquot->dq_free)) return; list_del_init(&dquot->dq_free); - dqstats_dec(DQST_FREE_DQUOTS); + if (!atomic_read(&dquot->dq_count)) + dqstats_dec(DQST_FREE_DQUOTS); } static inline void put_inuse(struct dquot *dquot) @@ -336,6 +355,11 @@ static void wait_on_dquot(struct dquot *dquot) mutex_unlock(&dquot->dq_lock); } +static inline int dquot_active(struct dquot *dquot) +{ + return test_bit(DQ_ACTIVE_B, &dquot->dq_flags); +} + static inline int dquot_dirty(struct dquot *dquot) { return test_bit(DQ_MOD_B, &dquot->dq_flags); @@ -351,14 +375,14 @@ int dquot_mark_dquot_dirty(struct dquot *dquot) { int ret = 1; - if (!test_bit(DQ_ACTIVE_B, &dquot->dq_flags)) + if (!dquot_active(dquot)) return 0; if (sb_dqopt(dquot->dq_sb)->flags & DQUOT_NOLIST_DIRTY) return test_and_set_bit(DQ_MOD_B, &dquot->dq_flags); /* If quota is dirty already, we don't have to acquire dq_list_lock */ - if (test_bit(DQ_MOD_B, &dquot->dq_flags)) + if (dquot_dirty(dquot)) return 1; spin_lock(&dq_list_lock); @@ -440,7 +464,7 @@ int dquot_acquire(struct dquot *dquot) smp_mb__before_atomic(); set_bit(DQ_READ_B, &dquot->dq_flags); /* Instantiate dquot if needed */ - if (!test_bit(DQ_ACTIVE_B, &dquot->dq_flags) && !dquot->dq_off) { + if (!dquot_active(dquot) && !dquot->dq_off) { ret = dqopt->ops[dquot->dq_id.type]->commit_dqblk(dquot); /* Write the info if needed */ if (info_dirty(&dqopt->info[dquot->dq_id.type])) { @@ -482,7 +506,7 @@ int dquot_commit(struct dquot *dquot) goto out_lock; /* Inactive dquot can be only if there was error during read/init * => we have better not writing it */ - if (test_bit(DQ_ACTIVE_B, &dquot->dq_flags)) + if (dquot_active(dquot)) ret = dqopt->ops[dquot->dq_id.type]->commit_dqblk(dquot); else ret = -EIO; @@ -547,6 +571,8 @@ static void invalidate_dquots(struct super_block *sb, int type) struct dquot *dquot, *tmp; restart: + flush_delayed_work("a_release_work); + spin_lock(&dq_list_lock); list_for_each_entry_safe(dquot, tmp, &inuse_list, dq_inuse) { if (dquot->dq_sb != sb) @@ -555,6 +581,12 @@ restart: continue; /* Wait for dquot users */ if (atomic_read(&dquot->dq_count)) { + /* dquot in releasing_dquots, flush and retry */ + if (!list_empty(&dquot->dq_free)) { + spin_unlock(&dq_list_lock); + goto restart; + } + atomic_inc(&dquot->dq_count); spin_unlock(&dq_list_lock); /* @@ -597,7 +629,7 @@ int dquot_scan_active(struct super_block *sb, spin_lock(&dq_list_lock); list_for_each_entry(dquot, &inuse_list, dq_inuse) { - if (!test_bit(DQ_ACTIVE_B, &dquot->dq_flags)) + if (!dquot_active(dquot)) continue; if (dquot->dq_sb != sb) continue; @@ -612,7 +644,7 @@ int dquot_scan_active(struct super_block *sb, * outstanding call and recheck the DQ_ACTIVE_B after that. */ wait_on_dquot(dquot); - if (test_bit(DQ_ACTIVE_B, &dquot->dq_flags)) { + if (dquot_active(dquot)) { ret = fn(dquot, priv); if (ret < 0) goto out; @@ -628,6 +660,18 @@ out: } EXPORT_SYMBOL(dquot_scan_active); +static inline int dquot_write_dquot(struct dquot *dquot) +{ + int ret = dquot->dq_sb->dq_op->write_dquot(dquot); + if (ret < 0) { + quota_error(dquot->dq_sb, "Can't write quota structure " + "(error %d). Quota may get out of sync!", ret); + /* Clear dirty bit anyway to avoid infinite loop. */ + clear_dquot_dirty(dquot); + } + return ret; +} + /* Write all dquot structures to quota files */ int dquot_writeback_dquots(struct super_block *sb, int type) { @@ -651,23 +695,16 @@ int dquot_writeback_dquots(struct super_block *sb, int type) dquot = list_first_entry(&dirty, struct dquot, dq_dirty); - WARN_ON(!test_bit(DQ_ACTIVE_B, &dquot->dq_flags)); + WARN_ON(!dquot_active(dquot)); /* Now we have active dquot from which someone is * holding reference so we can safely just increase * use count */ dqgrab(dquot); spin_unlock(&dq_list_lock); - err = sb->dq_op->write_dquot(dquot); - if (err) { - /* - * Clear dirty bit anyway to avoid infinite - * loop here. - */ - clear_dquot_dirty(dquot); - if (!ret) - ret = err; - } + err = dquot_write_dquot(dquot); + if (err && !ret) + ret = err; dqput(dquot); spin_lock(&dq_list_lock); } @@ -761,12 +798,53 @@ static struct shrinker dqcache_shrinker = { }; /* + * Safely release dquot and put reference to dquot. + */ +static void quota_release_workfn(struct work_struct *work) +{ + struct dquot *dquot; + struct list_head rls_head; + + spin_lock(&dq_list_lock); + /* Exchange the list head to avoid livelock. */ + list_replace_init(&releasing_dquots, &rls_head); + spin_unlock(&dq_list_lock); + +restart: + synchronize_srcu(&dquot_srcu); + spin_lock(&dq_list_lock); + while (!list_empty(&rls_head)) { + dquot = list_first_entry(&rls_head, struct dquot, dq_free); + /* Dquot got used again? */ + if (atomic_read(&dquot->dq_count) > 1) { + remove_free_dquot(dquot); + atomic_dec(&dquot->dq_count); + continue; + } + if (dquot_dirty(dquot)) { + spin_unlock(&dq_list_lock); + /* Commit dquot before releasing */ + dquot_write_dquot(dquot); + goto restart; + } + if (dquot_active(dquot)) { + spin_unlock(&dq_list_lock); + dquot->dq_sb->dq_op->release_dquot(dquot); + goto restart; + } + /* Dquot is inactive and clean, now move it to free list */ + remove_free_dquot(dquot); + atomic_dec(&dquot->dq_count); + put_dquot_last(dquot); + } + spin_unlock(&dq_list_lock); +} + +/* * Put reference to dquot */ void dqput(struct dquot *dquot) { - int ret; - if (!dquot) return; #ifdef CONFIG_QUOTA_DEBUG @@ -778,7 +856,7 @@ void dqput(struct dquot *dquot) } #endif dqstats_inc(DQST_DROPS); -we_slept: + spin_lock(&dq_list_lock); if (atomic_read(&dquot->dq_count) > 1) { /* We have more than one user... nothing to do */ @@ -790,35 +868,15 @@ we_slept: spin_unlock(&dq_list_lock); return; } + /* Need to release dquot? */ - if (dquot_dirty(dquot)) { - spin_unlock(&dq_list_lock); - /* Commit dquot before releasing */ - ret = dquot->dq_sb->dq_op->write_dquot(dquot); - if (ret < 0) { - quota_error(dquot->dq_sb, "Can't write quota structure" - " (error %d). Quota may get out of sync!", - ret); - /* - * We clear dirty bit anyway, so that we avoid - * infinite loop here - */ - clear_dquot_dirty(dquot); - } - goto we_slept; - } - if (test_bit(DQ_ACTIVE_B, &dquot->dq_flags)) { - spin_unlock(&dq_list_lock); - dquot->dq_sb->dq_op->release_dquot(dquot); - goto we_slept; - } - atomic_dec(&dquot->dq_count); #ifdef CONFIG_QUOTA_DEBUG /* sanity check */ BUG_ON(!list_empty(&dquot->dq_free)); #endif - put_dquot_last(dquot); + put_releasing_dquots(dquot); spin_unlock(&dq_list_lock); + queue_delayed_work(system_unbound_wq, "a_release_work, 1); } EXPORT_SYMBOL(dqput); @@ -908,7 +966,7 @@ we_slept: * already finished or it will be canceled due to dq_count > 1 test */ wait_on_dquot(dquot); /* Read the dquot / allocate space in quota file */ - if (!test_bit(DQ_ACTIVE_B, &dquot->dq_flags)) { + if (!dquot_active(dquot)) { int err; err = sb->dq_op->acquire_dquot(dquot); @@ -1014,59 +1072,7 @@ out: return err; } -/* - * Remove references to dquots from inode and add dquot to list for freeing - * if we have the last reference to dquot - */ -static void remove_inode_dquot_ref(struct inode *inode, int type, - struct list_head *tofree_head) -{ - struct dquot **dquots = i_dquot(inode); - struct dquot *dquot = dquots[type]; - - if (!dquot) - return; - - dquots[type] = NULL; - if (list_empty(&dquot->dq_free)) { - /* - * The inode still has reference to dquot so it can't be in the - * free list - */ - spin_lock(&dq_list_lock); - list_add(&dquot->dq_free, tofree_head); - spin_unlock(&dq_list_lock); - } else { - /* - * Dquot is already in a list to put so we won't drop the last - * reference here. - */ - dqput(dquot); - } -} - -/* - * Free list of dquots - * Dquots are removed from inodes and no new references can be got so we are - * the only ones holding reference - */ -static void put_dquot_list(struct list_head *tofree_head) -{ - struct list_head *act_head; - struct dquot *dquot; - - act_head = tofree_head->next; - while (act_head != tofree_head) { - dquot = list_entry(act_head, struct dquot, dq_free); - act_head = act_head->next; - /* Remove dquot from the list so we won't have problems... */ - list_del_init(&dquot->dq_free); - dqput(dquot); - } -} - -static void remove_dquot_ref(struct super_block *sb, int type, - struct list_head *tofree_head) +static void remove_dquot_ref(struct super_block *sb, int type) { struct inode *inode; #ifdef CONFIG_QUOTA_DEBUG @@ -1083,11 +1089,16 @@ static void remove_dquot_ref(struct super_block *sb, int type, */ spin_lock(&dq_data_lock); if (!IS_NOQUOTA(inode)) { + struct dquot **dquots = i_dquot(inode); + struct dquot *dquot = dquots[type]; + #ifdef CONFIG_QUOTA_DEBUG if (unlikely(inode_get_rsv_space(inode) > 0)) reserved = 1; #endif - remove_inode_dquot_ref(inode, type, tofree_head); + dquots[type] = NULL; + if (dquot) + dqput(dquot); } spin_unlock(&dq_data_lock); } @@ -1104,13 +1115,8 @@ static void remove_dquot_ref(struct super_block *sb, int type, /* Gather all references from inodes and drop them */ static void drop_dquot_ref(struct super_block *sb, int type) { - LIST_HEAD(tofree_head); - - if (sb->dq_op) { - remove_dquot_ref(sb, type, &tofree_head); - synchronize_srcu(&dquot_srcu); - put_dquot_list(&tofree_head); - } + if (sb->dq_op) + remove_dquot_ref(sb, type); } static inline @@ -1425,7 +1431,7 @@ static int info_bdq_free(struct dquot *dquot, qsize_t space) return QUOTA_NL_NOWARN; } -static int dquot_active(const struct inode *inode) +static int inode_quota_active(const struct inode *inode) { struct super_block *sb = inode->i_sb; @@ -1448,7 +1454,7 @@ static int __dquot_initialize(struct inode *inode, int type) qsize_t rsv; int ret = 0; - if (!dquot_active(inode)) + if (!inode_quota_active(inode)) return 0; dquots = i_dquot(inode); @@ -1556,7 +1562,7 @@ bool dquot_initialize_needed(struct inode *inode) struct dquot **dquots; int i; - if (!dquot_active(inode)) + if (!inode_quota_active(inode)) return false; dquots = i_dquot(inode); @@ -1667,7 +1673,7 @@ int __dquot_alloc_space(struct inode *inode, qsize_t number, int flags) int reserve = flags & DQUOT_SPACE_RESERVE; struct dquot **dquots; - if (!dquot_active(inode)) { + if (!inode_quota_active(inode)) { if (reserve) { spin_lock(&inode->i_lock); *inode_reserved_space(inode) += number; @@ -1737,7 +1743,7 @@ int dquot_alloc_inode(struct inode *inode) struct dquot_warn warn[MAXQUOTAS]; struct dquot * const *dquots; - if (!dquot_active(inode)) + if (!inode_quota_active(inode)) return 0; for (cnt = 0; cnt < MAXQUOTAS; cnt++) warn[cnt].w_type = QUOTA_NL_NOWARN; @@ -1780,7 +1786,7 @@ int dquot_claim_space_nodirty(struct inode *inode, qsize_t number) struct dquot **dquots; int cnt, index; - if (!dquot_active(inode)) { + if (!inode_quota_active(inode)) { spin_lock(&inode->i_lock); *inode_reserved_space(inode) -= number; __inode_add_bytes(inode, number); @@ -1822,7 +1828,7 @@ void dquot_reclaim_space_nodirty(struct inode *inode, qsize_t number) struct dquot **dquots; int cnt, index; - if (!dquot_active(inode)) { + if (!inode_quota_active(inode)) { spin_lock(&inode->i_lock); *inode_reserved_space(inode) += number; __inode_sub_bytes(inode, number); @@ -1866,7 +1872,7 @@ void __dquot_free_space(struct inode *inode, qsize_t number, int flags) struct dquot **dquots; int reserve = flags & DQUOT_SPACE_RESERVE, index; - if (!dquot_active(inode)) { + if (!inode_quota_active(inode)) { if (reserve) { spin_lock(&inode->i_lock); *inode_reserved_space(inode) -= number; @@ -1921,7 +1927,7 @@ void dquot_free_inode(struct inode *inode) struct dquot * const *dquots; int index; - if (!dquot_active(inode)) + if (!inode_quota_active(inode)) return; dquots = i_dquot(inode); @@ -2093,7 +2099,7 @@ int dquot_transfer(struct mnt_idmap *idmap, struct inode *inode, struct super_block *sb = inode->i_sb; int ret; - if (!dquot_active(inode)) + if (!inode_quota_active(inode)) return 0; if (i_uid_needs_update(idmap, iattr, inode)) { @@ -2359,15 +2365,14 @@ int dquot_load_quota_sb(struct super_block *sb, int type, int format_id, struct quota_info *dqopt = sb_dqopt(sb); int error; + lockdep_assert_held_write(&sb->s_umount); + /* Just unsuspend quotas? */ BUG_ON(flags & DQUOT_SUSPENDED); - /* s_umount should be held in exclusive mode */ - if (WARN_ON_ONCE(down_read_trylock(&sb->s_umount))) - up_read(&sb->s_umount); if (!fmt) return -ESRCH; - if (!sb->s_op->quota_write || !sb->s_op->quota_read || + if (!sb->dq_op || !sb->s_qcop || (type == PRJQUOTA && sb->dq_op->get_projid == NULL)) { error = -EINVAL; goto out_fmt; diff --git a/fs/ramfs/inode.c b/fs/ramfs/inode.c index fef477c78107..18e8387cab41 100644 --- a/fs/ramfs/inode.c +++ b/fs/ramfs/inode.c @@ -65,7 +65,7 @@ struct inode *ramfs_get_inode(struct super_block *sb, inode->i_mapping->a_ops = &ram_aops; mapping_set_gfp_mask(inode->i_mapping, GFP_HIGHUSER); mapping_set_unevictable(inode->i_mapping); - inode->i_atime = inode->i_mtime = inode->i_ctime = current_time(inode); + inode->i_atime = inode->i_mtime = inode_set_ctime_current(inode); switch (mode & S_IFMT) { default: init_special_inode(inode, mode, dev); @@ -105,7 +105,7 @@ ramfs_mknod(struct mnt_idmap *idmap, struct inode *dir, d_instantiate(dentry, inode); dget(dentry); /* Extra count - pin the dentry in core */ error = 0; - dir->i_mtime = dir->i_ctime = current_time(dir); + dir->i_mtime = inode_set_ctime_current(dir); } return error; } @@ -138,7 +138,7 @@ static int ramfs_symlink(struct mnt_idmap *idmap, struct inode *dir, if (!error) { d_instantiate(dentry, inode); dget(dentry); - dir->i_mtime = dir->i_ctime = current_time(dir); + dir->i_mtime = inode_set_ctime_current(dir); } else iput(inode); } diff --git a/fs/read_write.c b/fs/read_write.c index b07de77ef126..4771701c896b 100644 --- a/fs/read_write.c +++ b/fs/read_write.c @@ -71,7 +71,7 @@ EXPORT_SYMBOL(vfs_setpos); * @file: file structure to seek on * @offset: file offset to seek to * @whence: type of seek - * @size: max size of this file in file system + * @maxsize: max size of this file in file system * @eof: offset used for SEEK_END position * * This is a variant of generic_file_llseek that allows passing in a custom diff --git a/fs/readdir.c b/fs/readdir.c index b264ce60114d..c8c46e294431 100644 --- a/fs/readdir.c +++ b/fs/readdir.c @@ -25,6 +25,53 @@ #include <asm/unaligned.h> /* + * Some filesystems were never converted to '->iterate_shared()' + * and their directory iterators want the inode lock held for + * writing. This wrapper allows for converting from the shared + * semantics to the exclusive inode use. + */ +int wrap_directory_iterator(struct file *file, + struct dir_context *ctx, + int (*iter)(struct file *, struct dir_context *)) +{ + struct inode *inode = file_inode(file); + int ret; + + /* + * We'd love to have an 'inode_upgrade_trylock()' operation, + * see the comment in mmap_upgrade_trylock() in mm/memory.c. + * + * But considering this is for "filesystems that never got + * converted", it really doesn't matter. + * + * Also note that since we have to return with the lock held + * for reading, we can't use the "killable()" locking here, + * since we do need to get the lock even if we're dying. + * + * We could do the write part killably and then get the read + * lock unconditionally if it mattered, but see above on why + * this does the very simplistic conversion. + */ + up_read(&inode->i_rwsem); + down_write(&inode->i_rwsem); + + /* + * Since we dropped the inode lock, we should do the + * DEADDIR test again. See 'iterate_dir()' below. + * + * Note that we don't need to re-do the f_pos games, + * since the file must be locked wrt f_pos anyway. + */ + ret = -ENOENT; + if (!IS_DEADDIR(inode)) + ret = iter(file, ctx); + + downgrade_write(&inode->i_rwsem); + return ret; +} +EXPORT_SYMBOL(wrap_directory_iterator); + +/* * Note the "unsafe_put_user() semantics: we goto a * label for errors. */ @@ -40,39 +87,28 @@ int iterate_dir(struct file *file, struct dir_context *ctx) { struct inode *inode = file_inode(file); - bool shared = false; int res = -ENOTDIR; - if (file->f_op->iterate_shared) - shared = true; - else if (!file->f_op->iterate) + + if (!file->f_op->iterate_shared) goto out; res = security_file_permission(file, MAY_READ); if (res) goto out; - if (shared) - res = down_read_killable(&inode->i_rwsem); - else - res = down_write_killable(&inode->i_rwsem); + res = down_read_killable(&inode->i_rwsem); if (res) goto out; res = -ENOENT; if (!IS_DEADDIR(inode)) { ctx->pos = file->f_pos; - if (shared) - res = file->f_op->iterate_shared(file, ctx); - else - res = file->f_op->iterate(file, ctx); + res = file->f_op->iterate_shared(file, ctx); file->f_pos = ctx->pos; fsnotify_access(file); file_accessed(file); } - if (shared) - inode_unlock_shared(inode); - else - inode_unlock(inode); + inode_unlock_shared(inode); out: return res; } diff --git a/fs/reiserfs/Kconfig b/fs/reiserfs/Kconfig index 4d22ecfe0fab..0e6fe26458fe 100644 --- a/fs/reiserfs/Kconfig +++ b/fs/reiserfs/Kconfig @@ -1,6 +1,7 @@ # SPDX-License-Identifier: GPL-2.0-only config REISERFS_FS tristate "Reiserfs support (deprecated)" + select BUFFER_HEAD select CRC32 select LEGACY_DIRECT_IO help diff --git a/fs/reiserfs/fix_node.c b/fs/reiserfs/fix_node.c index fefe87e1c099..6c13a8d9a73c 100644 --- a/fs/reiserfs/fix_node.c +++ b/fs/reiserfs/fix_node.c @@ -2252,8 +2252,9 @@ static int get_virtual_node_size(struct super_block *sb, struct buffer_head *bh) return sizeof(struct virtual_node) + max(max_num_of_items * sizeof(struct virtual_item), - sizeof(struct virtual_item) + sizeof(struct direntry_uarea) + - (max_num_of_entries - 1) * sizeof(__u16)); + sizeof(struct virtual_item) + + struct_size_t(struct direntry_uarea, entry_sizes, + max_num_of_entries)); } /* diff --git a/fs/reiserfs/inode.c b/fs/reiserfs/inode.c index 77bd3b27059f..86e55d4bb10d 100644 --- a/fs/reiserfs/inode.c +++ b/fs/reiserfs/inode.c @@ -1259,9 +1259,8 @@ static void init_inode(struct inode *inode, struct treepath *path) inode->i_size = sd_v1_size(sd); inode->i_atime.tv_sec = sd_v1_atime(sd); inode->i_mtime.tv_sec = sd_v1_mtime(sd); - inode->i_ctime.tv_sec = sd_v1_ctime(sd); + inode_set_ctime(inode, sd_v1_ctime(sd), 0); inode->i_atime.tv_nsec = 0; - inode->i_ctime.tv_nsec = 0; inode->i_mtime.tv_nsec = 0; inode->i_blocks = sd_v1_blocks(sd); @@ -1314,8 +1313,7 @@ static void init_inode(struct inode *inode, struct treepath *path) i_gid_write(inode, sd_v2_gid(sd)); inode->i_mtime.tv_sec = sd_v2_mtime(sd); inode->i_atime.tv_sec = sd_v2_atime(sd); - inode->i_ctime.tv_sec = sd_v2_ctime(sd); - inode->i_ctime.tv_nsec = 0; + inode_set_ctime(inode, sd_v2_ctime(sd), 0); inode->i_mtime.tv_nsec = 0; inode->i_atime.tv_nsec = 0; inode->i_blocks = sd_v2_blocks(sd); @@ -1374,7 +1372,7 @@ static void inode2sd(void *sd, struct inode *inode, loff_t size) set_sd_v2_gid(sd_v2, i_gid_read(inode)); set_sd_v2_mtime(sd_v2, inode->i_mtime.tv_sec); set_sd_v2_atime(sd_v2, inode->i_atime.tv_sec); - set_sd_v2_ctime(sd_v2, inode->i_ctime.tv_sec); + set_sd_v2_ctime(sd_v2, inode_get_ctime(inode).tv_sec); set_sd_v2_blocks(sd_v2, to_fake_used_blocks(inode, SD_V2_SIZE)); if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode)) set_sd_v2_rdev(sd_v2, new_encode_dev(inode->i_rdev)); @@ -1394,7 +1392,7 @@ static void inode2sd_v1(void *sd, struct inode *inode, loff_t size) set_sd_v1_nlink(sd_v1, inode->i_nlink); set_sd_v1_size(sd_v1, size); set_sd_v1_atime(sd_v1, inode->i_atime.tv_sec); - set_sd_v1_ctime(sd_v1, inode->i_ctime.tv_sec); + set_sd_v1_ctime(sd_v1, inode_get_ctime(inode).tv_sec); set_sd_v1_mtime(sd_v1, inode->i_mtime.tv_sec); if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode)) @@ -1986,7 +1984,7 @@ int reiserfs_new_inode(struct reiserfs_transaction_handle *th, /* uid and gid must already be set by the caller for quota init */ - inode->i_mtime = inode->i_atime = inode->i_ctime = current_time(inode); + inode->i_mtime = inode->i_atime = inode_set_ctime_current(inode); inode->i_size = i_size; inode->i_blocks = 0; inode->i_bytes = 0; diff --git a/fs/reiserfs/ioctl.c b/fs/reiserfs/ioctl.c index 6bf9b54e58ca..dd33f8cc6eda 100644 --- a/fs/reiserfs/ioctl.c +++ b/fs/reiserfs/ioctl.c @@ -55,7 +55,7 @@ int reiserfs_fileattr_set(struct mnt_idmap *idmap, } sd_attrs_to_i_attrs(flags, inode); REISERFS_I(inode)->i_attrs = flags; - inode->i_ctime = current_time(inode); + inode_set_ctime_current(inode); mark_inode_dirty(inode); err = 0; unlock: @@ -107,7 +107,7 @@ long reiserfs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) err = -EFAULT; goto setversion_out; } - inode->i_ctime = current_time(inode); + inode_set_ctime_current(inode); mark_inode_dirty(inode); setversion_out: mnt_drop_write_file(filp); diff --git a/fs/reiserfs/journal.c b/fs/reiserfs/journal.c index 479aa4a57602..015bfe4e4524 100644 --- a/fs/reiserfs/journal.c +++ b/fs/reiserfs/journal.c @@ -2326,7 +2326,7 @@ static struct buffer_head *reiserfs_breada(struct block_device *dev, int i, j; bh = __getblk(dev, block, bufsize); - if (buffer_uptodate(bh)) + if (!bh || buffer_uptodate(bh)) return (bh); if (block + BUFNR > max_block) { @@ -2336,6 +2336,8 @@ static struct buffer_head *reiserfs_breada(struct block_device *dev, j = 1; for (i = 1; i < blocks; i++) { bh = __getblk(dev, block + i, bufsize); + if (!bh) + break; if (buffer_uptodate(bh)) { brelse(bh); break; diff --git a/fs/reiserfs/namei.c b/fs/reiserfs/namei.c index 52240cc891cf..9c5704be2435 100644 --- a/fs/reiserfs/namei.c +++ b/fs/reiserfs/namei.c @@ -572,7 +572,7 @@ static int reiserfs_add_entry(struct reiserfs_transaction_handle *th, } dir->i_size += paste_size; - dir->i_mtime = dir->i_ctime = current_time(dir); + dir->i_mtime = inode_set_ctime_current(dir); if (!S_ISDIR(inode->i_mode) && visible) /* reiserfs_mkdir or reiserfs_rename will do that by itself */ reiserfs_update_sd(th, dir); @@ -966,7 +966,8 @@ static int reiserfs_rmdir(struct inode *dir, struct dentry *dentry) inode->i_nlink); clear_nlink(inode); - inode->i_ctime = dir->i_ctime = dir->i_mtime = current_time(dir); + dir->i_mtime = inode_set_ctime_to_ts(dir, + inode_set_ctime_current(inode)); reiserfs_update_sd(&th, inode); DEC_DIR_INODE_NLINK(dir) @@ -1070,11 +1071,11 @@ static int reiserfs_unlink(struct inode *dir, struct dentry *dentry) inc_nlink(inode); goto end_unlink; } - inode->i_ctime = current_time(inode); + inode_set_ctime_current(inode); reiserfs_update_sd(&th, inode); dir->i_size -= (de.de_entrylen + DEH_SIZE); - dir->i_ctime = dir->i_mtime = current_time(dir); + dir->i_mtime = inode_set_ctime_current(dir); reiserfs_update_sd(&th, dir); if (!savelink) @@ -1250,7 +1251,7 @@ static int reiserfs_link(struct dentry *old_dentry, struct inode *dir, return err ? err : retval; } - inode->i_ctime = current_time(inode); + inode_set_ctime_current(inode); reiserfs_update_sd(&th, inode); ihold(inode); @@ -1325,7 +1326,6 @@ static int reiserfs_rename(struct mnt_idmap *idmap, int jbegin_count; umode_t old_inode_mode; unsigned long savelink = 1; - struct timespec64 ctime; if (flags & ~RENAME_NOREPLACE) return -EINVAL; @@ -1576,14 +1576,11 @@ static int reiserfs_rename(struct mnt_idmap *idmap, mark_de_hidden(old_de.de_deh + old_de.de_entry_num); journal_mark_dirty(&th, old_de.de_bh); - ctime = current_time(old_dir); - old_dir->i_ctime = old_dir->i_mtime = ctime; - new_dir->i_ctime = new_dir->i_mtime = ctime; /* * thanks to Alex Adriaanse <alex_a@caltech.edu> for patch * which adds ctime update of renamed object */ - old_inode->i_ctime = ctime; + simple_rename_timestamp(old_dir, old_dentry, new_dir, new_dentry); if (new_dentry_inode) { /* adjust link number of the victim */ @@ -1592,7 +1589,6 @@ static int reiserfs_rename(struct mnt_idmap *idmap, } else { drop_nlink(new_dentry_inode); } - new_dentry_inode->i_ctime = ctime; savelink = new_dentry_inode->i_nlink; } diff --git a/fs/reiserfs/reiserfs.h b/fs/reiserfs/reiserfs.h index 55e85256aae8..b81749492ef9 100644 --- a/fs/reiserfs/reiserfs.h +++ b/fs/reiserfs/reiserfs.h @@ -2373,7 +2373,7 @@ struct virtual_node { struct direntry_uarea { int flags; __u16 entry_count; - __u16 entry_sizes[1]; + __u16 entry_sizes[]; } __attribute__ ((__packed__)); /*************************************************************************** diff --git a/fs/reiserfs/stree.c b/fs/reiserfs/stree.c index ce5003986789..3676e02a0232 100644 --- a/fs/reiserfs/stree.c +++ b/fs/reiserfs/stree.c @@ -2004,7 +2004,7 @@ int reiserfs_do_truncate(struct reiserfs_transaction_handle *th, if (update_timestamps) { inode->i_mtime = current_time(inode); - inode->i_ctime = current_time(inode); + inode_set_ctime_current(inode); } reiserfs_update_sd(th, inode); @@ -2029,7 +2029,7 @@ update_and_out: if (update_timestamps) { /* this is truncate, not file closing */ inode->i_mtime = current_time(inode); - inode->i_ctime = current_time(inode); + inode_set_ctime_current(inode); } reiserfs_update_sd(th, inode); diff --git a/fs/reiserfs/super.c b/fs/reiserfs/super.c index 929acce6e731..7eaf36b3de12 100644 --- a/fs/reiserfs/super.c +++ b/fs/reiserfs/super.c @@ -2587,7 +2587,7 @@ out: return err; if (inode->i_size < off + len - towrite) i_size_write(inode, off + len - towrite); - inode->i_mtime = inode->i_ctime = current_time(inode); + inode->i_mtime = inode_set_ctime_current(inode); mark_inode_dirty(inode); return len - towrite; } diff --git a/fs/reiserfs/xattr.c b/fs/reiserfs/xattr.c index 651027967159..6000964c2b80 100644 --- a/fs/reiserfs/xattr.c +++ b/fs/reiserfs/xattr.c @@ -466,12 +466,13 @@ int reiserfs_commit_write(struct file *f, struct page *page, static void update_ctime(struct inode *inode) { struct timespec64 now = current_time(inode); + struct timespec64 ctime = inode_get_ctime(inode); if (inode_unhashed(inode) || !inode->i_nlink || - timespec64_equal(&inode->i_ctime, &now)) + timespec64_equal(&ctime, &now)) return; - inode->i_ctime = current_time(inode); + inode_set_ctime_to_ts(inode, now); mark_inode_dirty(inode); } diff --git a/fs/reiserfs/xattr_acl.c b/fs/reiserfs/xattr_acl.c index 138060452678..064264992b49 100644 --- a/fs/reiserfs/xattr_acl.c +++ b/fs/reiserfs/xattr_acl.c @@ -285,7 +285,7 @@ __reiserfs_set_acl(struct reiserfs_transaction_handle *th, struct inode *inode, if (error == -ENODATA) { error = 0; if (type == ACL_TYPE_ACCESS) { - inode->i_ctime = current_time(inode); + inode_set_ctime_current(inode); mark_inode_dirty(inode); } } diff --git a/fs/romfs/Kconfig b/fs/romfs/Kconfig index 8eb87008b55a..f24a96a331af 100644 --- a/fs/romfs/Kconfig +++ b/fs/romfs/Kconfig @@ -57,6 +57,7 @@ endchoice config ROMFS_ON_BLOCK bool default y if ROMFS_BACKED_BY_BLOCK || ROMFS_BACKED_BY_BOTH + select BUFFER_HEAD config ROMFS_ON_MTD bool diff --git a/fs/romfs/super.c b/fs/romfs/super.c index c59b230d55b4..5c35f6c76037 100644 --- a/fs/romfs/super.c +++ b/fs/romfs/super.c @@ -322,8 +322,7 @@ static struct inode *romfs_iget(struct super_block *sb, unsigned long pos) set_nlink(i, 1); /* Hard to decide.. */ i->i_size = be32_to_cpu(ri.size); - i->i_mtime.tv_sec = i->i_atime.tv_sec = i->i_ctime.tv_sec = 0; - i->i_mtime.tv_nsec = i->i_atime.tv_nsec = i->i_ctime.tv_nsec = 0; + i->i_mtime = i->i_atime = inode_set_ctime(i, 0, 0); /* set up mode and ops */ mode = romfs_modemap[nextfh & ROMFH_TYPE]; @@ -583,16 +582,18 @@ static int romfs_init_fs_context(struct fs_context *fc) */ static void romfs_kill_sb(struct super_block *sb) { + generic_shutdown_super(sb); + #ifdef CONFIG_ROMFS_ON_MTD if (sb->s_mtd) { - kill_mtd_super(sb); - return; + put_mtd_device(sb->s_mtd); + sb->s_mtd = NULL; } #endif #ifdef CONFIG_ROMFS_ON_BLOCK if (sb->s_bdev) { - kill_block_super(sb); - return; + sync_blockdev(sb->s_bdev); + blkdev_put(sb->s_bdev, sb); } #endif } diff --git a/fs/smb/client/Kconfig b/fs/smb/client/Kconfig index 4c0d53bf931a..2927bd174a88 100644 --- a/fs/smb/client/Kconfig +++ b/fs/smb/client/Kconfig @@ -3,6 +3,7 @@ config CIFS tristate "SMB3 and CIFS support (advanced network filesystem)" depends on INET select NLS + select NLS_UCS2_UTILS select CRYPTO select CRYPTO_MD5 select CRYPTO_SHA256 diff --git a/fs/smb/client/Makefile b/fs/smb/client/Makefile index 304a7f6cc13a..0b07eb94c93b 100644 --- a/fs/smb/client/Makefile +++ b/fs/smb/client/Makefile @@ -11,7 +11,8 @@ cifs-y := trace.o cifsfs.o cifs_debug.o connect.o dir.o file.o \ readdir.o ioctl.o sess.o export.o unc.o winucase.o \ smb2ops.o smb2maperror.o smb2transport.o \ smb2misc.o smb2pdu.o smb2inode.o smb2file.o cifsacl.o fs_context.o \ - dns_resolve.o cifs_spnego_negtokeninit.asn1.o asn1.o + dns_resolve.o cifs_spnego_negtokeninit.asn1.o asn1.o \ + namespace.o $(obj)/asn1.o: $(obj)/cifs_spnego_negtokeninit.asn1.h @@ -21,7 +22,7 @@ cifs-$(CONFIG_CIFS_XATTR) += xattr.o cifs-$(CONFIG_CIFS_UPCALL) += cifs_spnego.o -cifs-$(CONFIG_CIFS_DFS_UPCALL) += cifs_dfs_ref.o dfs_cache.o dfs.o +cifs-$(CONFIG_CIFS_DFS_UPCALL) += dfs_cache.o dfs.o cifs-$(CONFIG_CIFS_SWN_UPCALL) += netlink.o cifs_swn.o diff --git a/fs/smb/client/cached_dir.c b/fs/smb/client/cached_dir.c index fe483f163dbc..2d5e9a9d5b8b 100644 --- a/fs/smb/client/cached_dir.c +++ b/fs/smb/client/cached_dir.c @@ -218,7 +218,7 @@ int open_cached_dir(unsigned int xid, struct cifs_tcon *tcon, .tcon = tcon, .path = path, .create_options = cifs_create_options(cifs_sb, CREATE_NOT_FILE), - .desired_access = FILE_READ_ATTRIBUTES, + .desired_access = FILE_READ_DATA | FILE_READ_ATTRIBUTES, .disposition = FILE_OPEN, .fid = pfid, }; diff --git a/fs/smb/client/cifs_debug.c b/fs/smb/client/cifs_debug.c index fb4162a52844..76922fcc4bc6 100644 --- a/fs/smb/client/cifs_debug.c +++ b/fs/smb/client/cifs_debug.c @@ -153,6 +153,11 @@ cifs_dump_channel(struct seq_file *m, int i, struct cifs_chan *chan) in_flight(server), atomic_read(&server->in_send), atomic_read(&server->num_waiters)); +#ifdef CONFIG_NET_NS + if (server->net) + seq_printf(m, " Net namespace: %u ", server->net->ns.inum); +#endif /* NET_NS */ + } static inline const char *smb_speed_to_str(size_t bps) @@ -326,7 +331,7 @@ static int cifs_debug_data_proc_show(struct seq_file *m, void *v) spin_lock(&cifs_tcp_ses_lock); list_for_each_entry(server, &cifs_tcp_ses_list, tcp_ses_list) { /* channel info will be printed as a part of sessions below */ - if (CIFS_SERVER_IS_CHAN(server)) + if (SERVER_IS_CHAN(server)) continue; c++; @@ -430,10 +435,15 @@ skip_rdma: server->reconnect_instance, server->srv_count, server->sec_mode, in_flight(server)); +#ifdef CONFIG_NET_NS + if (server->net) + seq_printf(m, " Net namespace: %u ", server->net->ns.inum); +#endif /* NET_NS */ seq_printf(m, "\nIn Send: %d In MaxReq Wait: %d", atomic_read(&server->in_send), atomic_read(&server->num_waiters)); + if (server->leaf_fullpath) { seq_printf(m, "\nDFS leaf full path: %s", server->leaf_fullpath); diff --git a/fs/smb/client/cifs_unicode.c b/fs/smb/client/cifs_unicode.c index e7582dd79179..79d99a913944 100644 --- a/fs/smb/client/cifs_unicode.c +++ b/fs/smb/client/cifs_unicode.c @@ -8,7 +8,6 @@ #include <linux/slab.h> #include "cifs_fs_sb.h" #include "cifs_unicode.h" -#include "cifs_uniupr.h" #include "cifspdu.h" #include "cifsglob.h" #include "cifs_debug.h" diff --git a/fs/smb/client/cifs_unicode.h b/fs/smb/client/cifs_unicode.h index 80b3d845419f..e137a0dfbbe9 100644 --- a/fs/smb/client/cifs_unicode.h +++ b/fs/smb/client/cifs_unicode.h @@ -21,21 +21,7 @@ #include <asm/byteorder.h> #include <linux/types.h> #include <linux/nls.h> - -#define UNIUPR_NOLOWER /* Example to not expand lower case tables */ - -/* - * Windows maps these to the user defined 16 bit Unicode range since they are - * reserved symbols (along with \ and /), otherwise illegal to store - * in filenames in NTFS - */ -#define UNI_ASTERISK (__u16) ('*' + 0xF000) -#define UNI_QUESTION (__u16) ('?' + 0xF000) -#define UNI_COLON (__u16) (':' + 0xF000) -#define UNI_GRTRTHAN (__u16) ('>' + 0xF000) -#define UNI_LESSTHAN (__u16) ('<' + 0xF000) -#define UNI_PIPE (__u16) ('|' + 0xF000) -#define UNI_SLASH (__u16) ('\\' + 0xF000) +#include "../../nls/nls_ucs2_utils.h" /* * Macs use an older "SFM" mapping of the symbols above. Fortunately it does @@ -68,27 +54,6 @@ #define SFM_MAP_UNI_RSVD 1 #define SFU_MAP_UNI_RSVD 2 -/* Just define what we want from uniupr.h. We don't want to define the tables - * in each source file. - */ -#ifndef UNICASERANGE_DEFINED -struct UniCaseRange { - wchar_t start; - wchar_t end; - signed char *table; -}; -#endif /* UNICASERANGE_DEFINED */ - -#ifndef UNIUPR_NOUPPER -extern signed char CifsUniUpperTable[512]; -extern const struct UniCaseRange CifsUniUpperRange[]; -#endif /* UNIUPR_NOUPPER */ - -#ifndef UNIUPR_NOLOWER -extern signed char CifsUniLowerTable[512]; -extern const struct UniCaseRange CifsUniLowerRange[]; -#endif /* UNIUPR_NOLOWER */ - #ifdef __KERNEL__ int cifs_from_utf16(char *to, const __le16 *from, int tolen, int fromlen, const struct nls_table *cp, int map_type); @@ -108,297 +73,4 @@ extern __le16 *cifs_strndup_to_utf16(const char *src, const int maxlen, wchar_t cifs_toupper(wchar_t in); -/* - * UniStrcat: Concatenate the second string to the first - * - * Returns: - * Address of the first string - */ -static inline __le16 * -UniStrcat(__le16 *ucs1, const __le16 *ucs2) -{ - __le16 *anchor = ucs1; /* save a pointer to start of ucs1 */ - - while (*ucs1++) ; /* To end of first string */ - ucs1--; /* Return to the null */ - while ((*ucs1++ = *ucs2++)) ; /* copy string 2 over */ - return anchor; -} - -/* - * UniStrchr: Find a character in a string - * - * Returns: - * Address of first occurrence of character in string - * or NULL if the character is not in the string - */ -static inline wchar_t * -UniStrchr(const wchar_t *ucs, wchar_t uc) -{ - while ((*ucs != uc) && *ucs) - ucs++; - - if (*ucs == uc) - return (wchar_t *) ucs; - return NULL; -} - -/* - * UniStrcmp: Compare two strings - * - * Returns: - * < 0: First string is less than second - * = 0: Strings are equal - * > 0: First string is greater than second - */ -static inline int -UniStrcmp(const wchar_t *ucs1, const wchar_t *ucs2) -{ - while ((*ucs1 == *ucs2) && *ucs1) { - ucs1++; - ucs2++; - } - return (int) *ucs1 - (int) *ucs2; -} - -/* - * UniStrcpy: Copy a string - */ -static inline wchar_t * -UniStrcpy(wchar_t *ucs1, const wchar_t *ucs2) -{ - wchar_t *anchor = ucs1; /* save the start of result string */ - - while ((*ucs1++ = *ucs2++)) ; - return anchor; -} - -/* - * UniStrlen: Return the length of a string (in 16 bit Unicode chars not bytes) - */ -static inline size_t -UniStrlen(const wchar_t *ucs1) -{ - int i = 0; - - while (*ucs1++) - i++; - return i; -} - -/* - * UniStrnlen: Return the length (in 16 bit Unicode chars not bytes) of a - * string (length limited) - */ -static inline size_t -UniStrnlen(const wchar_t *ucs1, int maxlen) -{ - int i = 0; - - while (*ucs1++) { - i++; - if (i >= maxlen) - break; - } - return i; -} - -/* - * UniStrncat: Concatenate length limited string - */ -static inline wchar_t * -UniStrncat(wchar_t *ucs1, const wchar_t *ucs2, size_t n) -{ - wchar_t *anchor = ucs1; /* save pointer to string 1 */ - - while (*ucs1++) ; - ucs1--; /* point to null terminator of s1 */ - while (n-- && (*ucs1 = *ucs2)) { /* copy s2 after s1 */ - ucs1++; - ucs2++; - } - *ucs1 = 0; /* Null terminate the result */ - return (anchor); -} - -/* - * UniStrncmp: Compare length limited string - */ -static inline int -UniStrncmp(const wchar_t *ucs1, const wchar_t *ucs2, size_t n) -{ - if (!n) - return 0; /* Null strings are equal */ - while ((*ucs1 == *ucs2) && *ucs1 && --n) { - ucs1++; - ucs2++; - } - return (int) *ucs1 - (int) *ucs2; -} - -/* - * UniStrncmp_le: Compare length limited string - native to little-endian - */ -static inline int -UniStrncmp_le(const wchar_t *ucs1, const wchar_t *ucs2, size_t n) -{ - if (!n) - return 0; /* Null strings are equal */ - while ((*ucs1 == __le16_to_cpu(*ucs2)) && *ucs1 && --n) { - ucs1++; - ucs2++; - } - return (int) *ucs1 - (int) __le16_to_cpu(*ucs2); -} - -/* - * UniStrncpy: Copy length limited string with pad - */ -static inline wchar_t * -UniStrncpy(wchar_t *ucs1, const wchar_t *ucs2, size_t n) -{ - wchar_t *anchor = ucs1; - - while (n-- && *ucs2) /* Copy the strings */ - *ucs1++ = *ucs2++; - - n++; - while (n--) /* Pad with nulls */ - *ucs1++ = 0; - return anchor; -} - -/* - * UniStrncpy_le: Copy length limited string with pad to little-endian - */ -static inline wchar_t * -UniStrncpy_le(wchar_t *ucs1, const wchar_t *ucs2, size_t n) -{ - wchar_t *anchor = ucs1; - - while (n-- && *ucs2) /* Copy the strings */ - *ucs1++ = __le16_to_cpu(*ucs2++); - - n++; - while (n--) /* Pad with nulls */ - *ucs1++ = 0; - return anchor; -} - -/* - * UniStrstr: Find a string in a string - * - * Returns: - * Address of first match found - * NULL if no matching string is found - */ -static inline wchar_t * -UniStrstr(const wchar_t *ucs1, const wchar_t *ucs2) -{ - const wchar_t *anchor1 = ucs1; - const wchar_t *anchor2 = ucs2; - - while (*ucs1) { - if (*ucs1 == *ucs2) { - /* Partial match found */ - ucs1++; - ucs2++; - } else { - if (!*ucs2) /* Match found */ - return (wchar_t *) anchor1; - ucs1 = ++anchor1; /* No match */ - ucs2 = anchor2; - } - } - - if (!*ucs2) /* Both end together */ - return (wchar_t *) anchor1; /* Match found */ - return NULL; /* No match */ -} - -#ifndef UNIUPR_NOUPPER -/* - * UniToupper: Convert a unicode character to upper case - */ -static inline wchar_t -UniToupper(register wchar_t uc) -{ - register const struct UniCaseRange *rp; - - if (uc < sizeof(CifsUniUpperTable)) { - /* Latin characters */ - return uc + CifsUniUpperTable[uc]; /* Use base tables */ - } else { - rp = CifsUniUpperRange; /* Use range tables */ - while (rp->start) { - if (uc < rp->start) /* Before start of range */ - return uc; /* Uppercase = input */ - if (uc <= rp->end) /* In range */ - return uc + rp->table[uc - rp->start]; - rp++; /* Try next range */ - } - } - return uc; /* Past last range */ -} - -/* - * UniStrupr: Upper case a unicode string - */ -static inline __le16 * -UniStrupr(register __le16 *upin) -{ - register __le16 *up; - - up = upin; - while (*up) { /* For all characters */ - *up = cpu_to_le16(UniToupper(le16_to_cpu(*up))); - up++; - } - return upin; /* Return input pointer */ -} -#endif /* UNIUPR_NOUPPER */ - -#ifndef UNIUPR_NOLOWER -/* - * UniTolower: Convert a unicode character to lower case - */ -static inline wchar_t -UniTolower(register wchar_t uc) -{ - register const struct UniCaseRange *rp; - - if (uc < sizeof(CifsUniLowerTable)) { - /* Latin characters */ - return uc + CifsUniLowerTable[uc]; /* Use base tables */ - } else { - rp = CifsUniLowerRange; /* Use range tables */ - while (rp->start) { - if (uc < rp->start) /* Before start of range */ - return uc; /* Uppercase = input */ - if (uc <= rp->end) /* In range */ - return uc + rp->table[uc - rp->start]; - rp++; /* Try next range */ - } - } - return uc; /* Past last range */ -} - -/* - * UniStrlwr: Lower case a unicode string - */ -static inline wchar_t * -UniStrlwr(register wchar_t *upin) -{ - register wchar_t *up; - - up = upin; - while (*up) { /* For all characters */ - *up = UniTolower(*up); - up++; - } - return upin; /* Return input pointer */ -} - -#endif - #endif /* _CIFS_UNICODE_H */ diff --git a/fs/smb/client/cifs_uniupr.h b/fs/smb/client/cifs_uniupr.h deleted file mode 100644 index 7b272fcdf0d3..000000000000 --- a/fs/smb/client/cifs_uniupr.h +++ /dev/null @@ -1,239 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0-or-later */ -/* - * Copyright (c) International Business Machines Corp., 2000,2002 - * - * uniupr.h - Unicode compressed case ranges -*/ - -#ifndef UNIUPR_NOUPPER -/* - * Latin upper case - */ -signed char CifsUniUpperTable[512] = { - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 000-00f */ - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 010-01f */ - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 020-02f */ - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 030-03f */ - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 040-04f */ - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 050-05f */ - 0, -32, -32, -32, -32, -32, -32, -32, -32, -32, -32, -32, -32, -32, -32, -32, /* 060-06f */ - -32, -32, -32, -32, -32, -32, -32, -32, -32, -32, -32, 0, 0, 0, 0, 0, /* 070-07f */ - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 080-08f */ - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 090-09f */ - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0a0-0af */ - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0b0-0bf */ - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0c0-0cf */ - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0d0-0df */ - -32, -32, -32, -32, -32, -32, -32, -32, -32, -32, -32, -32, -32, -32, -32, -32, /* 0e0-0ef */ - -32, -32, -32, -32, -32, -32, -32, 0, -32, -32, -32, -32, -32, -32, -32, 121, /* 0f0-0ff */ - 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, /* 100-10f */ - 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, /* 110-11f */ - 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, /* 120-12f */ - 0, 0, 0, -1, 0, -1, 0, -1, 0, 0, -1, 0, -1, 0, -1, 0, /* 130-13f */ - -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, 0, -1, 0, -1, 0, -1, /* 140-14f */ - 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, /* 150-15f */ - 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, /* 160-16f */ - 0, -1, 0, -1, 0, -1, 0, -1, 0, 0, -1, 0, -1, 0, -1, 0, /* 170-17f */ - 0, 0, 0, -1, 0, -1, 0, 0, -1, 0, 0, 0, -1, 0, 0, 0, /* 180-18f */ - 0, 0, -1, 0, 0, 0, 0, 0, 0, -1, 0, 0, 0, 0, 0, 0, /* 190-19f */ - 0, -1, 0, -1, 0, -1, 0, 0, -1, 0, 0, 0, 0, -1, 0, 0, /* 1a0-1af */ - -1, 0, 0, 0, -1, 0, -1, 0, 0, -1, 0, 0, 0, -1, 0, 0, /* 1b0-1bf */ - 0, 0, 0, 0, 0, -1, -2, 0, -1, -2, 0, -1, -2, 0, -1, 0, /* 1c0-1cf */ - -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, -79, 0, -1, /* 1d0-1df */ - 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, /* 1e0-1ef */ - 0, 0, -1, -2, 0, -1, 0, 0, 0, -1, 0, -1, 0, -1, 0, -1, /* 1f0-1ff */ -}; - -/* Upper case range - Greek */ -static signed char UniCaseRangeU03a0[47] = { - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -38, -37, -37, -37, /* 3a0-3af */ - 0, -32, -32, -32, -32, -32, -32, -32, -32, -32, -32, -32, -32, -32, -32, -32, /* 3b0-3bf */ - -32, -32, -31, -32, -32, -32, -32, -32, -32, -32, -32, -32, -64, - -63, -63, -}; - -/* Upper case range - Cyrillic */ -static signed char UniCaseRangeU0430[48] = { - -32, -32, -32, -32, -32, -32, -32, -32, -32, -32, -32, -32, -32, -32, -32, -32, /* 430-43f */ - -32, -32, -32, -32, -32, -32, -32, -32, -32, -32, -32, -32, -32, -32, -32, -32, /* 440-44f */ - 0, -80, -80, -80, -80, -80, -80, -80, -80, -80, -80, -80, -80, 0, -80, -80, /* 450-45f */ -}; - -/* Upper case range - Extended cyrillic */ -static signed char UniCaseRangeU0490[61] = { - 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, /* 490-49f */ - 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, /* 4a0-4af */ - 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, /* 4b0-4bf */ - 0, 0, -1, 0, -1, 0, 0, 0, -1, 0, 0, 0, -1, -}; - -/* Upper case range - Extended latin and greek */ -static signed char UniCaseRangeU1e00[509] = { - 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, /* 1e00-1e0f */ - 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, /* 1e10-1e1f */ - 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, /* 1e20-1e2f */ - 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, /* 1e30-1e3f */ - 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, /* 1e40-1e4f */ - 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, /* 1e50-1e5f */ - 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, /* 1e60-1e6f */ - 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, /* 1e70-1e7f */ - 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, /* 1e80-1e8f */ - 0, -1, 0, -1, 0, -1, 0, 0, 0, 0, 0, -59, 0, -1, 0, -1, /* 1e90-1e9f */ - 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, /* 1ea0-1eaf */ - 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, /* 1eb0-1ebf */ - 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, /* 1ec0-1ecf */ - 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, /* 1ed0-1edf */ - 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, /* 1ee0-1eef */ - 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, 0, 0, 0, 0, 0, /* 1ef0-1eff */ - 8, 8, 8, 8, 8, 8, 8, 8, 0, 0, 0, 0, 0, 0, 0, 0, /* 1f00-1f0f */ - 8, 8, 8, 8, 8, 8, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 1f10-1f1f */ - 8, 8, 8, 8, 8, 8, 8, 8, 0, 0, 0, 0, 0, 0, 0, 0, /* 1f20-1f2f */ - 8, 8, 8, 8, 8, 8, 8, 8, 0, 0, 0, 0, 0, 0, 0, 0, /* 1f30-1f3f */ - 8, 8, 8, 8, 8, 8, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 1f40-1f4f */ - 0, 8, 0, 8, 0, 8, 0, 8, 0, 0, 0, 0, 0, 0, 0, 0, /* 1f50-1f5f */ - 8, 8, 8, 8, 8, 8, 8, 8, 0, 0, 0, 0, 0, 0, 0, 0, /* 1f60-1f6f */ - 74, 74, 86, 86, 86, 86, 100, 100, 0, 0, 112, 112, 126, 126, 0, 0, /* 1f70-1f7f */ - 8, 8, 8, 8, 8, 8, 8, 8, 0, 0, 0, 0, 0, 0, 0, 0, /* 1f80-1f8f */ - 8, 8, 8, 8, 8, 8, 8, 8, 0, 0, 0, 0, 0, 0, 0, 0, /* 1f90-1f9f */ - 8, 8, 8, 8, 8, 8, 8, 8, 0, 0, 0, 0, 0, 0, 0, 0, /* 1fa0-1faf */ - 8, 8, 0, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 1fb0-1fbf */ - 0, 0, 0, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 1fc0-1fcf */ - 8, 8, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 1fd0-1fdf */ - 8, 8, 0, 0, 0, 7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 1fe0-1fef */ - 0, 0, 0, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, -}; - -/* Upper case range - Wide latin */ -static signed char UniCaseRangeUff40[27] = { - 0, -32, -32, -32, -32, -32, -32, -32, -32, -32, -32, -32, -32, -32, -32, -32, /* ff40-ff4f */ - -32, -32, -32, -32, -32, -32, -32, -32, -32, -32, -32, -}; - -/* - * Upper Case Range - */ -const struct UniCaseRange CifsUniUpperRange[] = { - {0x03a0, 0x03ce, UniCaseRangeU03a0}, - {0x0430, 0x045f, UniCaseRangeU0430}, - {0x0490, 0x04cc, UniCaseRangeU0490}, - {0x1e00, 0x1ffc, UniCaseRangeU1e00}, - {0xff40, 0xff5a, UniCaseRangeUff40}, - {0} -}; -#endif - -#ifndef UNIUPR_NOLOWER -/* - * Latin lower case - */ -signed char CifsUniLowerTable[512] = { - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 000-00f */ - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 010-01f */ - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 020-02f */ - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 030-03f */ - 0, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, /* 040-04f */ - 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 0, 0, 0, 0, 0, /* 050-05f */ - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 060-06f */ - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 070-07f */ - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 080-08f */ - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 090-09f */ - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0a0-0af */ - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0b0-0bf */ - 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, /* 0c0-0cf */ - 32, 32, 32, 32, 32, 32, 32, 0, 32, 32, 32, 32, 32, 32, 32, 0, /* 0d0-0df */ - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0e0-0ef */ - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0f0-0ff */ - 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, /* 100-10f */ - 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, /* 110-11f */ - 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, /* 120-12f */ - 0, 0, 1, 0, 1, 0, 1, 0, 0, 1, 0, 1, 0, 1, 0, 1, /* 130-13f */ - 0, 1, 0, 1, 0, 1, 0, 1, 0, 0, 1, 0, 1, 0, 1, 0, /* 140-14f */ - 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, /* 150-15f */ - 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, /* 160-16f */ - 1, 0, 1, 0, 1, 0, 1, 0, -121, 1, 0, 1, 0, 1, 0, 0, /* 170-17f */ - 0, 0, 1, 0, 1, 0, 0, 1, 0, 0, 0, 1, 0, 0, 79, 0, /* 180-18f */ - 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, /* 190-19f */ - 1, 0, 1, 0, 1, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 1, /* 1a0-1af */ - 0, 0, 0, 1, 0, 1, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, /* 1b0-1bf */ - 0, 0, 0, 0, 2, 1, 0, 2, 1, 0, 2, 1, 0, 1, 0, 1, /* 1c0-1cf */ - 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 0, 1, 0, /* 1d0-1df */ - 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, /* 1e0-1ef */ - 0, 2, 1, 0, 1, 0, 0, 0, 1, 0, 1, 0, 1, 0, 1, 0, /* 1f0-1ff */ -}; - -/* Lower case range - Greek */ -static signed char UniCaseRangeL0380[44] = { - 0, 0, 0, 0, 0, 0, 38, 0, 37, 37, 37, 0, 64, 0, 63, 63, /* 380-38f */ - 0, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, /* 390-39f */ - 32, 32, 0, 32, 32, 32, 32, 32, 32, 32, 32, 32, -}; - -/* Lower case range - Cyrillic */ -static signed char UniCaseRangeL0400[48] = { - 0, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 80, 0, 80, 80, /* 400-40f */ - 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, /* 410-41f */ - 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, /* 420-42f */ -}; - -/* Lower case range - Extended cyrillic */ -static signed char UniCaseRangeL0490[60] = { - 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, /* 490-49f */ - 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, /* 4a0-4af */ - 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, /* 4b0-4bf */ - 0, 1, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, -}; - -/* Lower case range - Extended latin and greek */ -static signed char UniCaseRangeL1e00[504] = { - 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, /* 1e00-1e0f */ - 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, /* 1e10-1e1f */ - 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, /* 1e20-1e2f */ - 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, /* 1e30-1e3f */ - 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, /* 1e40-1e4f */ - 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, /* 1e50-1e5f */ - 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, /* 1e60-1e6f */ - 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, /* 1e70-1e7f */ - 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, /* 1e80-1e8f */ - 1, 0, 1, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 1, 0, /* 1e90-1e9f */ - 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, /* 1ea0-1eaf */ - 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, /* 1eb0-1ebf */ - 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, /* 1ec0-1ecf */ - 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, /* 1ed0-1edf */ - 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, /* 1ee0-1eef */ - 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 0, 0, 0, 0, 0, 0, /* 1ef0-1eff */ - 0, 0, 0, 0, 0, 0, 0, 0, -8, -8, -8, -8, -8, -8, -8, -8, /* 1f00-1f0f */ - 0, 0, 0, 0, 0, 0, 0, 0, -8, -8, -8, -8, -8, -8, 0, 0, /* 1f10-1f1f */ - 0, 0, 0, 0, 0, 0, 0, 0, -8, -8, -8, -8, -8, -8, -8, -8, /* 1f20-1f2f */ - 0, 0, 0, 0, 0, 0, 0, 0, -8, -8, -8, -8, -8, -8, -8, -8, /* 1f30-1f3f */ - 0, 0, 0, 0, 0, 0, 0, 0, -8, -8, -8, -8, -8, -8, 0, 0, /* 1f40-1f4f */ - 0, 0, 0, 0, 0, 0, 0, 0, 0, -8, 0, -8, 0, -8, 0, -8, /* 1f50-1f5f */ - 0, 0, 0, 0, 0, 0, 0, 0, -8, -8, -8, -8, -8, -8, -8, -8, /* 1f60-1f6f */ - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 1f70-1f7f */ - 0, 0, 0, 0, 0, 0, 0, 0, -8, -8, -8, -8, -8, -8, -8, -8, /* 1f80-1f8f */ - 0, 0, 0, 0, 0, 0, 0, 0, -8, -8, -8, -8, -8, -8, -8, -8, /* 1f90-1f9f */ - 0, 0, 0, 0, 0, 0, 0, 0, -8, -8, -8, -8, -8, -8, -8, -8, /* 1fa0-1faf */ - 0, 0, 0, 0, 0, 0, 0, 0, -8, -8, -74, -74, -9, 0, 0, 0, /* 1fb0-1fbf */ - 0, 0, 0, 0, 0, 0, 0, 0, -86, -86, -86, -86, -9, 0, 0, 0, /* 1fc0-1fcf */ - 0, 0, 0, 0, 0, 0, 0, 0, -8, -8, -100, -100, 0, 0, 0, 0, /* 1fd0-1fdf */ - 0, 0, 0, 0, 0, 0, 0, 0, -8, -8, -112, -112, -7, 0, 0, 0, /* 1fe0-1fef */ - 0, 0, 0, 0, 0, 0, 0, 0, -}; - -/* Lower case range - Wide latin */ -static signed char UniCaseRangeLff20[27] = { - 0, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, /* ff20-ff2f */ - 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, -}; - -/* - * Lower Case Range - */ -const struct UniCaseRange CifsUniLowerRange[] = { - {0x0380, 0x03ab, UniCaseRangeL0380}, - {0x0400, 0x042f, UniCaseRangeL0400}, - {0x0490, 0x04cb, UniCaseRangeL0490}, - {0x1e00, 0x1ff7, UniCaseRangeL1e00}, - {0xff20, 0xff3a, UniCaseRangeLff20}, - {0} -}; -#endif diff --git a/fs/smb/client/cifsfs.c b/fs/smb/client/cifsfs.c index a4d8b0ea1c8c..73c44e097a69 100644 --- a/fs/smb/client/cifsfs.c +++ b/fs/smb/client/cifsfs.c @@ -1077,7 +1077,7 @@ static loff_t cifs_llseek(struct file *file, loff_t offset, int whence) } static int -cifs_setlease(struct file *file, long arg, struct file_lock **lease, void **priv) +cifs_setlease(struct file *file, int arg, struct file_lock **lease, void **priv) { /* * Note that this is called by vfs setlease with i_lock held to @@ -1805,7 +1805,7 @@ exit_cifs(void) cifs_dbg(NOISY, "exit_smb3\n"); unregister_filesystem(&cifs_fs_type); unregister_filesystem(&smb3_fs_type); - cifs_dfs_release_automount_timer(); + cifs_release_automount_timer(); exit_cifs_idmap(); #ifdef CONFIG_CIFS_SWN_UPCALL cifs_genl_exit(); diff --git a/fs/smb/client/cifsfs.h b/fs/smb/client/cifsfs.h index 15c8cc4b6680..532c38fe07cd 100644 --- a/fs/smb/client/cifsfs.h +++ b/fs/smb/client/cifsfs.h @@ -81,7 +81,7 @@ extern int cifs_fiemap(struct inode *, struct fiemap_extent_info *, u64 start, extern const struct inode_operations cifs_file_inode_ops; extern const struct inode_operations cifs_symlink_inode_ops; -extern const struct inode_operations cifs_dfs_referral_inode_operations; +extern const struct inode_operations cifs_namespace_inode_operations; /* Functions related to files and directories */ @@ -118,14 +118,7 @@ extern void cifs_pages_write_redirty(struct inode *inode, loff_t start, unsigned extern const struct dentry_operations cifs_dentry_ops; extern const struct dentry_operations cifs_ci_dentry_ops; -#ifdef CONFIG_CIFS_DFS_UPCALL -extern struct vfsmount *cifs_dfs_d_automount(struct path *path); -#else -static inline struct vfsmount *cifs_dfs_d_automount(struct path *path) -{ - return ERR_PTR(-EREMOTE); -} -#endif +extern struct vfsmount *cifs_d_automount(struct path *path); /* Functions related to symlinks */ extern const char *cifs_get_link(struct dentry *, struct inode *, diff --git a/fs/smb/client/cifsglob.h b/fs/smb/client/cifsglob.h index 657dee4b2c8c..259e231f8b4f 100644 --- a/fs/smb/client/cifsglob.h +++ b/fs/smb/client/cifsglob.h @@ -186,6 +186,12 @@ struct cifs_cred { }; struct cifs_open_info_data { + bool adjust_tz; + union { + bool reparse_point; + bool symlink; + }; + __u32 reparse_tag; char *symlink_target; union { struct smb2_file_all_info fi; @@ -193,6 +199,10 @@ struct cifs_open_info_data { }; }; +#define cifs_open_data_reparse(d) \ + ((d)->reparse_point || \ + (le32_to_cpu((d)->fi.Attributes) & ATTR_REPARSE)) + static inline void cifs_free_open_info(struct cifs_open_info_data *data) { kfree(data->symlink_target); @@ -318,16 +328,21 @@ struct smb_version_operations { int (*is_path_accessible)(const unsigned int, struct cifs_tcon *, struct cifs_sb_info *, const char *); /* query path data from the server */ - int (*query_path_info)(const unsigned int xid, struct cifs_tcon *tcon, - struct cifs_sb_info *cifs_sb, const char *full_path, - struct cifs_open_info_data *data, bool *adjust_tz, bool *reparse); + int (*query_path_info)(const unsigned int xid, + struct cifs_tcon *tcon, + struct cifs_sb_info *cifs_sb, + const char *full_path, + struct cifs_open_info_data *data); /* query file data from the server */ int (*query_file_info)(const unsigned int xid, struct cifs_tcon *tcon, struct cifsFileInfo *cfile, struct cifs_open_info_data *data); - /* query reparse tag from srv to determine which type of special file */ - int (*query_reparse_tag)(const unsigned int xid, struct cifs_tcon *tcon, - struct cifs_sb_info *cifs_sb, const char *path, - __u32 *reparse_tag); + /* query reparse point to determine which type of special file */ + int (*query_reparse_point)(const unsigned int xid, + struct cifs_tcon *tcon, + struct cifs_sb_info *cifs_sb, + const char *full_path, + u32 *tag, struct kvec *rsp, + int *rsp_buftype); /* get server index number */ int (*get_srv_inum)(const unsigned int xid, struct cifs_tcon *tcon, struct cifs_sb_info *cifs_sb, const char *full_path, u64 *uniqueid, @@ -376,9 +391,12 @@ struct smb_version_operations { const char *, const char *, struct cifs_sb_info *); /* query symlink target */ - int (*query_symlink)(const unsigned int, struct cifs_tcon *, - struct cifs_sb_info *, const char *, - char **, bool); + int (*query_symlink)(const unsigned int xid, + struct cifs_tcon *tcon, + struct cifs_sb_info *cifs_sb, + const char *full_path, + char **target_path, + struct kvec *rsp_iov); /* open a file for non-posix mounts */ int (*open)(const unsigned int xid, struct cifs_open_parms *oparms, __u32 *oplock, void *buf); @@ -727,8 +745,9 @@ struct TCP_Server_Info { * primary_server holds the ref-counted * pointer to primary channel connection for the session. */ -#define CIFS_SERVER_IS_CHAN(server) (!!(server)->primary_server) +#define SERVER_IS_CHAN(server) (!!(server)->primary_server) struct TCP_Server_Info *primary_server; + __u16 channel_sequence_num; /* incremented on primary channel on each chan reconnect */ #ifdef CONFIG_CIFS_SWN_UPCALL bool use_swn_dstaddr; @@ -1076,7 +1095,7 @@ cap_unix(struct cifs_ses *ses) * inode with new info */ -#define CIFS_FATTR_DFS_REFERRAL 0x1 +#define CIFS_FATTR_JUNCTION 0x1 #define CIFS_FATTR_DELETE_PENDING 0x2 #define CIFS_FATTR_NEED_REVAL 0x4 #define CIFS_FATTR_INO_COLLISION 0x8 @@ -1721,11 +1740,23 @@ struct cifs_mount_ctx { struct list_head dfs_ses_list; }; +static inline void __free_dfs_info_param(struct dfs_info3_param *param) +{ + kfree(param->path_name); + kfree(param->node_name); +} + static inline void free_dfs_info_param(struct dfs_info3_param *param) { + if (param) + __free_dfs_info_param(param); +} + +static inline void zfree_dfs_info_param(struct dfs_info3_param *param) +{ if (param) { - kfree(param->path_name); - kfree(param->node_name); + __free_dfs_info_param(param); + memset(param, 0, sizeof(*param)); } } @@ -2184,4 +2215,17 @@ static inline void cifs_sg_set_buf(struct sg_table *sgtable, } } +struct smb2_compound_vars { + struct cifs_open_parms oparms; + struct kvec rsp_iov[3]; + struct smb_rqst rqst[3]; + struct kvec open_iov[SMB2_CREATE_IOV_SIZE]; + struct kvec qi_iov; + struct kvec io_iov[SMB2_IOCTL_IOV_SIZE]; + struct kvec si_iov[SMB2_SET_INFO_IOV_SIZE]; + struct kvec close_iov; + struct smb2_file_rename_info rename_info; + struct smb2_file_link_info link_info; +}; + #endif /* _CIFS_GLOB_H */ diff --git a/fs/smb/client/cifsproto.h b/fs/smb/client/cifsproto.h index 1d71d658e167..7d8035846680 100644 --- a/fs/smb/client/cifsproto.h +++ b/fs/smb/client/cifsproto.h @@ -207,6 +207,9 @@ extern struct inode *cifs_iget(struct super_block *sb, int cifs_get_inode_info(struct inode **inode, const char *full_path, struct cifs_open_info_data *data, struct super_block *sb, int xid, const struct cifs_fid *fid); +bool cifs_reparse_point_to_fattr(struct cifs_sb_info *cifs_sb, + struct cifs_fattr *fattr, + u32 tag); extern int smb311_posix_get_inode_info(struct inode **pinode, const char *search_path, struct super_block *sb, unsigned int xid); extern int cifs_get_inode_info_unix(struct inode **pinode, @@ -295,11 +298,7 @@ extern void cifs_put_tcp_session(struct TCP_Server_Info *server, int from_reconnect); extern void cifs_put_tcon(struct cifs_tcon *tcon); -#if IS_ENABLED(CONFIG_CIFS_DFS_UPCALL) -extern void cifs_dfs_release_automount_timer(void); -#else /* ! IS_ENABLED(CONFIG_CIFS_DFS_UPCALL) */ -#define cifs_dfs_release_automount_timer() do { } while (0) -#endif /* ! IS_ENABLED(CONFIG_CIFS_DFS_UPCALL) */ +extern void cifs_release_automount_timer(void); void cifs_proc_init(void); void cifs_proc_clean(void); diff --git a/fs/smb/client/connect.c b/fs/smb/client/connect.c index 238538dde4e3..3bd71f982170 100644 --- a/fs/smb/client/connect.c +++ b/fs/smb/client/connect.c @@ -154,7 +154,7 @@ cifs_signal_cifsd_for_reconnect(struct TCP_Server_Info *server, int i; /* If server is a channel, select the primary channel */ - pserver = CIFS_SERVER_IS_CHAN(server) ? server->primary_server : server; + pserver = SERVER_IS_CHAN(server) ? server->primary_server : server; spin_lock(&pserver->srv_lock); if (!all_channels) { @@ -202,7 +202,7 @@ cifs_mark_tcp_ses_conns_for_reconnect(struct TCP_Server_Info *server, cifs_dbg(FYI, "%s: marking necessary sessions and tcons for reconnect\n", __func__); /* If server is a channel, select the primary channel */ - pserver = CIFS_SERVER_IS_CHAN(server) ? server->primary_server : server; + pserver = SERVER_IS_CHAN(server) ? server->primary_server : server; spin_lock(&cifs_tcp_ses_lock); @@ -453,10 +453,10 @@ static int reconnect_target_unlocked(struct TCP_Server_Info *server, struct dfs_ static int reconnect_dfs_server(struct TCP_Server_Info *server) { - int rc = 0; - struct dfs_cache_tgt_list tl = DFS_CACHE_TGT_LIST_INIT(tl); struct dfs_cache_tgt_iterator *target_hint = NULL; + DFS_CACHE_TGT_LIST(tl); int num_targets = 0; + int rc = 0; /* * Determine the number of dfs targets the referral path in @cifs_sb resolves to. @@ -911,8 +911,8 @@ cifs_enable_signing(struct TCP_Server_Info *server, bool mnt_sign_required) return 0; } - -static void clean_demultiplex_info(struct TCP_Server_Info *server) +static noinline_for_stack void +clean_demultiplex_info(struct TCP_Server_Info *server) { int length; @@ -1551,7 +1551,7 @@ cifs_find_tcp_session(struct smb3_fs_context *ctx) * Skip ses channels since they're only handled in lower layers * (e.g. cifs_send_recv). */ - if (CIFS_SERVER_IS_CHAN(server) || + if (SERVER_IS_CHAN(server) || !match_server(server, ctx, false)) { spin_unlock(&server->srv_lock); continue; @@ -1587,7 +1587,7 @@ cifs_put_tcp_session(struct TCP_Server_Info *server, int from_reconnect) spin_unlock(&cifs_tcp_ses_lock); /* For secondary channels, we pick up ref-count on the primary server */ - if (CIFS_SERVER_IS_CHAN(server)) + if (SERVER_IS_CHAN(server)) cifs_put_tcp_session(server->primary_server, from_reconnect); cancel_delayed_work_sync(&server->echo); @@ -1686,6 +1686,7 @@ cifs_get_tcp_session(struct smb3_fs_context *ctx, ctx->target_rfc1001_name, RFC1001_NAME_LEN_WITH_NULL); tcp_ses->session_estab = false; tcp_ses->sequence_number = 0; + tcp_ses->channel_sequence_num = 0; /* only tracked for primary channel */ tcp_ses->reconnect_instance = 1; tcp_ses->lstrp = jiffies; tcp_ses->compress_algorithm = cpu_to_le16(ctx->compression); @@ -1792,7 +1793,7 @@ out_err_crypto_release: out_err: if (tcp_ses) { - if (CIFS_SERVER_IS_CHAN(tcp_ses)) + if (SERVER_IS_CHAN(tcp_ses)) cifs_put_tcp_session(tcp_ses->primary_server, false); kfree(tcp_ses->hostname); kfree(tcp_ses->leaf_fullpath); @@ -3813,7 +3814,7 @@ cifs_setup_session(const unsigned int xid, struct cifs_ses *ses, struct nls_table *nls_info) { int rc = -ENOSYS; - struct TCP_Server_Info *pserver = CIFS_SERVER_IS_CHAN(server) ? server->primary_server : server; + struct TCP_Server_Info *pserver = SERVER_IS_CHAN(server) ? server->primary_server : server; struct sockaddr_in6 *addr6 = (struct sockaddr_in6 *)&pserver->dstaddr; struct sockaddr_in *addr = (struct sockaddr_in *)&pserver->dstaddr; bool is_binding = false; diff --git a/fs/smb/client/dfs.c b/fs/smb/client/dfs.c index df3fd3b720da..81b84151450d 100644 --- a/fs/smb/client/dfs.c +++ b/fs/smb/client/dfs.c @@ -3,7 +3,6 @@ * Copyright (c) 2022 Paulo Alcantara <palcantara@suse.de> */ -#include <linux/namei.h> #include "cifsproto.h" #include "cifs_debug.h" #include "dns_resolve.h" @@ -96,51 +95,134 @@ static int add_root_smb_session(struct cifs_mount_ctx *mnt_ctx) return 0; } -static int get_dfs_conn(struct cifs_mount_ctx *mnt_ctx, const char *ref_path, const char *full_path, - const struct dfs_cache_tgt_iterator *tit) +static inline int parse_dfs_target(struct smb3_fs_context *ctx, + struct dfs_ref_walk *rw, + struct dfs_info3_param *tgt) +{ + int rc; + const char *fpath = ref_walk_fpath(rw) + 1; + + rc = ref_walk_get_tgt(rw, tgt); + if (!rc) + rc = dfs_parse_target_referral(fpath, tgt, ctx); + return rc; +} + +static int set_ref_paths(struct cifs_mount_ctx *mnt_ctx, + struct dfs_info3_param *tgt, + struct dfs_ref_walk *rw) { struct smb3_fs_context *ctx = mnt_ctx->fs_ctx; - struct dfs_info3_param ref = {}; - bool is_refsrv; - int rc, rc2; + struct cifs_sb_info *cifs_sb = mnt_ctx->cifs_sb; + char *ref_path, *full_path; + int rc; - rc = dfs_cache_get_tgt_referral(ref_path + 1, tit, &ref); - if (rc) + full_path = smb3_fs_context_fullpath(ctx, CIFS_DIR_SEP(cifs_sb)); + if (IS_ERR(full_path)) + return PTR_ERR(full_path); + + if (!tgt || (tgt->server_type == DFS_TYPE_LINK && + DFS_INTERLINK(tgt->flags))) + ref_path = dfs_get_path(cifs_sb, ctx->UNC); + else + ref_path = dfs_get_path(cifs_sb, full_path); + if (IS_ERR(ref_path)) { + rc = PTR_ERR(ref_path); + kfree(full_path); return rc; + } + ref_walk_path(rw) = ref_path; + ref_walk_fpath(rw) = full_path; + return 0; +} - rc = dfs_parse_target_referral(full_path + 1, &ref, ctx); - if (rc) - goto out; +static int __dfs_referral_walk(struct cifs_mount_ctx *mnt_ctx, + struct dfs_ref_walk *rw) +{ + struct smb3_fs_context *ctx = mnt_ctx->fs_ctx; + struct dfs_info3_param tgt = {}; + bool is_refsrv; + int rc = -ENOENT; - cifs_mount_put_conns(mnt_ctx); - rc = get_session(mnt_ctx, ref_path); - if (rc) - goto out; +again: + do { + if (ref_walk_empty(rw)) { + rc = dfs_get_referral(mnt_ctx, ref_walk_path(rw) + 1, + NULL, ref_walk_tl(rw)); + if (rc) { + rc = cifs_mount_get_tcon(mnt_ctx); + if (!rc) + rc = cifs_is_path_remote(mnt_ctx); + continue; + } + if (!ref_walk_num_tgts(rw)) { + rc = -ENOENT; + continue; + } + } - is_refsrv = !!(ref.flags & DFSREF_REFERRAL_SERVER); + while (ref_walk_next_tgt(rw)) { + rc = parse_dfs_target(ctx, rw, &tgt); + if (rc) + continue; - rc = -EREMOTE; - if (ref.flags & DFSREF_STORAGE_SERVER) { - rc = cifs_mount_get_tcon(mnt_ctx); - if (rc) - goto out; + cifs_mount_put_conns(mnt_ctx); + rc = get_session(mnt_ctx, ref_walk_path(rw)); + if (rc) + continue; - /* some servers may not advertise referral capability under ref.flags */ - is_refsrv |= is_tcon_dfs(mnt_ctx->tcon); + is_refsrv = tgt.server_type == DFS_TYPE_ROOT || + DFS_INTERLINK(tgt.flags); + ref_walk_set_tgt_hint(rw); - rc = cifs_is_path_remote(mnt_ctx); - } + if (tgt.flags & DFSREF_STORAGE_SERVER) { + rc = cifs_mount_get_tcon(mnt_ctx); + if (!rc) + rc = cifs_is_path_remote(mnt_ctx); + if (!rc) + break; + if (rc != -EREMOTE) + continue; + } - dfs_cache_noreq_update_tgthint(ref_path + 1, tit); + if (is_refsrv) { + rc = add_root_smb_session(mnt_ctx); + if (rc) + goto out; + } - if (rc == -EREMOTE && is_refsrv) { - rc2 = add_root_smb_session(mnt_ctx); - if (rc2) - rc = rc2; - } + rc = ref_walk_advance(rw); + if (!rc) { + rc = set_ref_paths(mnt_ctx, &tgt, rw); + if (!rc) { + rc = -EREMOTE; + goto again; + } + } + if (rc != -ELOOP) + goto out; + } + } while (rc && ref_walk_descend(rw)); out: - free_dfs_info_param(&ref); + free_dfs_info_param(&tgt); + return rc; +} + +static int dfs_referral_walk(struct cifs_mount_ctx *mnt_ctx) +{ + struct dfs_ref_walk *rw; + int rc; + + rw = ref_walk_alloc(); + if (IS_ERR(rw)) + return PTR_ERR(rw); + + ref_walk_init(rw); + rc = set_ref_paths(mnt_ctx, NULL, rw); + if (!rc) + rc = __dfs_referral_walk(mnt_ctx, rw); + ref_walk_free(rw); return rc; } @@ -148,101 +230,48 @@ static int __dfs_mount_share(struct cifs_mount_ctx *mnt_ctx) { struct cifs_sb_info *cifs_sb = mnt_ctx->cifs_sb; struct smb3_fs_context *ctx = mnt_ctx->fs_ctx; - char *ref_path = NULL, *full_path = NULL; - struct dfs_cache_tgt_iterator *tit; struct cifs_tcon *tcon; - char *origin_fullpath = NULL; - char sep = CIFS_DIR_SEP(cifs_sb); - int num_links = 0; + char *origin_fullpath; int rc; - ref_path = dfs_get_path(cifs_sb, ctx->UNC); - if (IS_ERR(ref_path)) - return PTR_ERR(ref_path); + origin_fullpath = dfs_get_path(cifs_sb, ctx->source); + if (IS_ERR(origin_fullpath)) + return PTR_ERR(origin_fullpath); - full_path = smb3_fs_context_fullpath(ctx, sep); - if (IS_ERR(full_path)) { - rc = PTR_ERR(full_path); - full_path = NULL; + rc = dfs_referral_walk(mnt_ctx); + if (rc) goto out; - } - origin_fullpath = kstrdup(full_path, GFP_KERNEL); - if (!origin_fullpath) { - rc = -ENOMEM; - goto out; + tcon = mnt_ctx->tcon; + spin_lock(&tcon->tc_lock); + if (!tcon->origin_fullpath) { + tcon->origin_fullpath = origin_fullpath; + origin_fullpath = NULL; } + spin_unlock(&tcon->tc_lock); - do { - struct dfs_cache_tgt_list tl = DFS_CACHE_TGT_LIST_INIT(tl); - - rc = dfs_get_referral(mnt_ctx, ref_path + 1, NULL, &tl); - if (rc) - break; - - tit = dfs_cache_get_tgt_iterator(&tl); - if (!tit) { - cifs_dbg(VFS, "%s: dfs referral (%s) with no targets\n", __func__, - ref_path + 1); - rc = -ENOENT; - dfs_cache_free_tgts(&tl); - break; - } - - do { - rc = get_dfs_conn(mnt_ctx, ref_path, full_path, tit); - if (!rc) - break; - if (rc == -EREMOTE) { - if (++num_links > MAX_NESTED_LINKS) { - rc = -ELOOP; - break; - } - kfree(ref_path); - kfree(full_path); - ref_path = full_path = NULL; - - full_path = smb3_fs_context_fullpath(ctx, sep); - if (IS_ERR(full_path)) { - rc = PTR_ERR(full_path); - full_path = NULL; - } else { - ref_path = dfs_get_path(cifs_sb, full_path); - if (IS_ERR(ref_path)) { - rc = PTR_ERR(ref_path); - ref_path = NULL; - } - } - break; - } - } while ((tit = dfs_cache_get_next_tgt(&tl, tit))); - dfs_cache_free_tgts(&tl); - } while (rc == -EREMOTE); - - if (!rc) { - tcon = mnt_ctx->tcon; - - spin_lock(&tcon->tc_lock); - if (!tcon->origin_fullpath) { - tcon->origin_fullpath = origin_fullpath; - origin_fullpath = NULL; - } - spin_unlock(&tcon->tc_lock); - - if (list_empty(&tcon->dfs_ses_list)) { - list_replace_init(&mnt_ctx->dfs_ses_list, - &tcon->dfs_ses_list); - queue_delayed_work(dfscache_wq, &tcon->dfs_cache_work, - dfs_cache_get_ttl() * HZ); - } else { - dfs_put_root_smb_sessions(&mnt_ctx->dfs_ses_list); - } + if (list_empty(&tcon->dfs_ses_list)) { + list_replace_init(&mnt_ctx->dfs_ses_list, &tcon->dfs_ses_list); + queue_delayed_work(dfscache_wq, &tcon->dfs_cache_work, + dfs_cache_get_ttl() * HZ); + } else { + dfs_put_root_smb_sessions(&mnt_ctx->dfs_ses_list); } out: kfree(origin_fullpath); - kfree(ref_path); - kfree(full_path); + return rc; +} + +/* Resolve UNC hostname in @ctx->source and set ip addr in @ctx->dstaddr */ +static int update_fs_context_dstaddr(struct smb3_fs_context *ctx) +{ + struct sockaddr *addr = (struct sockaddr *)&ctx->dstaddr; + int rc; + + rc = dns_resolve_server_name_to_ip(ctx->source, addr, NULL); + if (!rc) + cifs_set_port(addr, ctx->port); return rc; } @@ -252,6 +281,10 @@ int dfs_mount_share(struct cifs_mount_ctx *mnt_ctx, bool *isdfs) bool nodfs = ctx->nodfs; int rc; + rc = update_fs_context_dstaddr(ctx); + if (rc) + return rc; + *isdfs = false; rc = get_session(mnt_ctx, NULL); if (rc) @@ -422,7 +455,7 @@ static int __tree_connect_dfs_target(const unsigned int xid, struct cifs_tcon *t /* Try to tree connect to all dfs targets */ for (; tit; tit = dfs_cache_get_next_tgt(tl, tit)) { const char *target = dfs_cache_get_tgt_name(tit); - struct dfs_cache_tgt_list ntl = DFS_CACHE_TGT_LIST_INIT(ntl); + DFS_CACHE_TGT_LIST(ntl); kfree(share); kfree(prefix); @@ -516,7 +549,7 @@ int cifs_tree_connect(const unsigned int xid, struct cifs_tcon *tcon, const stru int rc; struct TCP_Server_Info *server = tcon->ses->server; const struct smb_version_operations *ops = server->ops; - struct dfs_cache_tgt_list tl = DFS_CACHE_TGT_LIST_INIT(tl); + DFS_CACHE_TGT_LIST(tl); struct cifs_sb_info *cifs_sb = NULL; struct super_block *sb = NULL; struct dfs_info3_param ref = {0}; diff --git a/fs/smb/client/dfs.h b/fs/smb/client/dfs.h index 98e9d2aca6a7..875ab7ae57fc 100644 --- a/fs/smb/client/dfs.h +++ b/fs/smb/client/dfs.h @@ -9,6 +9,110 @@ #include "cifsglob.h" #include "fs_context.h" #include "cifs_unicode.h" +#include <linux/namei.h> + +#define DFS_INTERLINK(v) \ + (((v) & DFSREF_REFERRAL_SERVER) && !((v) & DFSREF_STORAGE_SERVER)) + +struct dfs_ref { + char *path; + char *full_path; + struct dfs_cache_tgt_list tl; + struct dfs_cache_tgt_iterator *tit; +}; + +struct dfs_ref_walk { + struct dfs_ref *ref; + struct dfs_ref refs[MAX_NESTED_LINKS]; +}; + +#define ref_walk_start(w) ((w)->refs) +#define ref_walk_end(w) (&(w)->refs[ARRAY_SIZE((w)->refs) - 1]) +#define ref_walk_cur(w) ((w)->ref) +#define ref_walk_descend(w) (--ref_walk_cur(w) >= ref_walk_start(w)) + +#define ref_walk_tit(w) (ref_walk_cur(w)->tit) +#define ref_walk_empty(w) (!ref_walk_tit(w)) +#define ref_walk_path(w) (ref_walk_cur(w)->path) +#define ref_walk_fpath(w) (ref_walk_cur(w)->full_path) +#define ref_walk_tl(w) (&ref_walk_cur(w)->tl) + +static inline struct dfs_ref_walk *ref_walk_alloc(void) +{ + struct dfs_ref_walk *rw; + + rw = kmalloc(sizeof(*rw), GFP_KERNEL); + if (!rw) + return ERR_PTR(-ENOMEM); + return rw; +} + +static inline void ref_walk_init(struct dfs_ref_walk *rw) +{ + memset(rw, 0, sizeof(*rw)); + ref_walk_cur(rw) = ref_walk_start(rw); +} + +static inline void __ref_walk_free(struct dfs_ref *ref) +{ + kfree(ref->path); + kfree(ref->full_path); + dfs_cache_free_tgts(&ref->tl); + memset(ref, 0, sizeof(*ref)); +} + +static inline void ref_walk_free(struct dfs_ref_walk *rw) +{ + struct dfs_ref *ref = ref_walk_start(rw); + + for (; ref <= ref_walk_end(rw); ref++) + __ref_walk_free(ref); + kfree(rw); +} + +static inline int ref_walk_advance(struct dfs_ref_walk *rw) +{ + struct dfs_ref *ref = ref_walk_cur(rw) + 1; + + if (ref > ref_walk_end(rw)) + return -ELOOP; + __ref_walk_free(ref); + ref_walk_cur(rw) = ref; + return 0; +} + +static inline struct dfs_cache_tgt_iterator * +ref_walk_next_tgt(struct dfs_ref_walk *rw) +{ + struct dfs_cache_tgt_iterator *tit; + struct dfs_ref *ref = ref_walk_cur(rw); + + if (!ref->tit) + tit = dfs_cache_get_tgt_iterator(&ref->tl); + else + tit = dfs_cache_get_next_tgt(&ref->tl, ref->tit); + ref->tit = tit; + return tit; +} + +static inline int ref_walk_get_tgt(struct dfs_ref_walk *rw, + struct dfs_info3_param *tgt) +{ + zfree_dfs_info_param(tgt); + return dfs_cache_get_tgt_referral(ref_walk_path(rw) + 1, + ref_walk_tit(rw), tgt); +} + +static inline int ref_walk_num_tgts(struct dfs_ref_walk *rw) +{ + return dfs_cache_get_nr_tgts(ref_walk_tl(rw)); +} + +static inline void ref_walk_set_tgt_hint(struct dfs_ref_walk *rw) +{ + dfs_cache_noreq_update_tgthint(ref_walk_path(rw) + 1, + ref_walk_tit(rw)); +} struct dfs_root_ses { struct list_head list; @@ -34,43 +138,6 @@ static inline int dfs_get_referral(struct cifs_mount_ctx *mnt_ctx, const char *p cifs_remap(cifs_sb), path, ref, tl); } -/* Return DFS full path out of a dentry set for automount */ -static inline char *dfs_get_automount_devname(struct dentry *dentry, void *page) -{ - struct cifs_sb_info *cifs_sb = CIFS_SB(dentry->d_sb); - struct cifs_tcon *tcon = cifs_sb_master_tcon(cifs_sb); - size_t len; - char *s; - - spin_lock(&tcon->tc_lock); - if (unlikely(!tcon->origin_fullpath)) { - spin_unlock(&tcon->tc_lock); - return ERR_PTR(-EREMOTE); - } - spin_unlock(&tcon->tc_lock); - - s = dentry_path_raw(dentry, page, PATH_MAX); - if (IS_ERR(s)) - return s; - /* for root, we want "" */ - if (!s[1]) - s++; - - spin_lock(&tcon->tc_lock); - len = strlen(tcon->origin_fullpath); - if (s < (char *)page + len) { - spin_unlock(&tcon->tc_lock); - return ERR_PTR(-ENAMETOOLONG); - } - - s -= len; - memcpy(s, tcon->origin_fullpath, len); - spin_unlock(&tcon->tc_lock); - convert_delimiter(s, '/'); - - return s; -} - static inline void dfs_put_root_smb_sessions(struct list_head *head) { struct dfs_root_ses *root, *tmp; diff --git a/fs/smb/client/dfs_cache.c b/fs/smb/client/dfs_cache.c index 33adf43a01f1..508d831fabe3 100644 --- a/fs/smb/client/dfs_cache.c +++ b/fs/smb/client/dfs_cache.c @@ -29,8 +29,6 @@ #define CACHE_MIN_TTL 120 /* 2 minutes */ #define CACHE_DEFAULT_TTL 300 /* 5 minutes */ -#define IS_DFS_INTERLINK(v) (((v) & DFSREF_REFERRAL_SERVER) && !((v) & DFSREF_STORAGE_SERVER)) - struct cache_dfs_tgt { char *name; int path_consumed; @@ -174,7 +172,7 @@ static int dfscache_proc_show(struct seq_file *m, void *v) "cache entry: path=%s,type=%s,ttl=%d,etime=%ld,hdr_flags=0x%x,ref_flags=0x%x,interlink=%s,path_consumed=%d,expired=%s\n", ce->path, ce->srvtype == DFS_TYPE_ROOT ? "root" : "link", ce->ttl, ce->etime.tv_nsec, ce->hdr_flags, ce->ref_flags, - IS_DFS_INTERLINK(ce->hdr_flags) ? "yes" : "no", + DFS_INTERLINK(ce->hdr_flags) ? "yes" : "no", ce->path_consumed, cache_entry_expired(ce) ? "yes" : "no"); list_for_each_entry(t, &ce->tlist, list) { @@ -243,7 +241,7 @@ static inline void dump_ce(const struct cache_entry *ce) ce->srvtype == DFS_TYPE_ROOT ? "root" : "link", ce->ttl, ce->etime.tv_nsec, ce->hdr_flags, ce->ref_flags, - IS_DFS_INTERLINK(ce->hdr_flags) ? "yes" : "no", + DFS_INTERLINK(ce->hdr_flags) ? "yes" : "no", ce->path_consumed, cache_entry_expired(ce) ? "yes" : "no"); dump_tgts(ce); @@ -1177,9 +1175,9 @@ static bool is_ses_good(struct cifs_ses *ses) /* Refresh dfs referral of tcon and mark it for reconnect if needed */ static int __refresh_tcon(const char *path, struct cifs_ses *ses, bool force_refresh) { - struct dfs_cache_tgt_list old_tl = DFS_CACHE_TGT_LIST_INIT(old_tl); - struct dfs_cache_tgt_list new_tl = DFS_CACHE_TGT_LIST_INIT(new_tl); struct TCP_Server_Info *server = ses->server; + DFS_CACHE_TGT_LIST(old_tl); + DFS_CACHE_TGT_LIST(new_tl); bool needs_refresh = false; struct cache_entry *ce; unsigned int xid; diff --git a/fs/smb/client/dfs_cache.h b/fs/smb/client/dfs_cache.h index c6d89cd6d4fd..18a08a2ca93b 100644 --- a/fs/smb/client/dfs_cache.h +++ b/fs/smb/client/dfs_cache.h @@ -16,7 +16,11 @@ extern struct workqueue_struct *dfscache_wq; extern atomic_t dfs_cache_ttl; -#define DFS_CACHE_TGT_LIST_INIT(var) { .tl_numtgts = 0, .tl_list = LIST_HEAD_INIT((var).tl_list), } +#define DFS_CACHE_TGT_LIST_INIT(var) \ + { .tl_numtgts = 0, .tl_list = LIST_HEAD_INIT((var).tl_list), } + +#define DFS_CACHE_TGT_LIST(var) \ + struct dfs_cache_tgt_list var = DFS_CACHE_TGT_LIST_INIT(var) struct dfs_cache_tgt_list { int tl_numtgts; @@ -51,8 +55,8 @@ static inline struct dfs_cache_tgt_iterator * dfs_cache_get_next_tgt(struct dfs_cache_tgt_list *tl, struct dfs_cache_tgt_iterator *it) { - if (!tl || list_empty(&tl->tl_list) || !it || - list_is_last(&it->it_list, &tl->tl_list)) + if (!tl || !tl->tl_numtgts || list_empty(&tl->tl_list) || + !it || list_is_last(&it->it_list, &tl->tl_list)) return NULL; return list_next_entry(it, it_list); } @@ -71,7 +75,7 @@ static inline void dfs_cache_free_tgts(struct dfs_cache_tgt_list *tl) { struct dfs_cache_tgt_iterator *it, *nit; - if (!tl || list_empty(&tl->tl_list)) + if (!tl || !tl->tl_numtgts || list_empty(&tl->tl_list)) return; list_for_each_entry_safe(it, nit, &tl->tl_list, it_list) { list_del(&it->it_list); diff --git a/fs/smb/client/dir.c b/fs/smb/client/dir.c index 30b1e1bfd204..580a27a3a7e6 100644 --- a/fs/smb/client/dir.c +++ b/fs/smb/client/dir.c @@ -797,7 +797,7 @@ cifs_d_revalidate(struct dentry *direntry, unsigned int flags) const struct dentry_operations cifs_dentry_ops = { .d_revalidate = cifs_d_revalidate, - .d_automount = cifs_dfs_d_automount, + .d_automount = cifs_d_automount, /* d_delete: cifs_d_delete, */ /* not needed except for debugging */ }; @@ -872,5 +872,5 @@ const struct dentry_operations cifs_ci_dentry_ops = { .d_revalidate = cifs_d_revalidate, .d_hash = cifs_ci_hash, .d_compare = cifs_ci_compare, - .d_automount = cifs_dfs_d_automount, + .d_automount = cifs_d_automount, }; diff --git a/fs/smb/client/file.c b/fs/smb/client/file.c index fc5acc95cd13..2108b3b40ce9 100644 --- a/fs/smb/client/file.c +++ b/fs/smb/client/file.c @@ -1085,7 +1085,7 @@ int cifs_close(struct inode *inode, struct file *file) !test_bit(CIFS_INO_CLOSE_ON_LOCK, &cinode->flags) && dclose) { if (test_and_clear_bit(CIFS_INO_MODIFIED_ATTR, &cinode->flags)) { - inode->i_ctime = inode->i_mtime = current_time(inode); + inode->i_mtime = inode_set_ctime_current(inode); } spin_lock(&cinode->deferred_lock); cifs_add_deferred_close(cfile, dclose); @@ -2596,7 +2596,7 @@ static int cifs_partialpagewrite(struct page *page, unsigned from, unsigned to) write_data, to - from, &offset); cifsFileInfo_put(open_file); /* Does mm or vfs already set times? */ - inode->i_atime = inode->i_mtime = current_time(inode); + inode->i_atime = inode->i_mtime = inode_set_ctime_current(inode); if ((bytes_written > 0) && (offset)) rc = 0; else if (bytes_written < 0) @@ -4681,9 +4681,9 @@ static int cifs_readpage_worker(struct file *file, struct page *page, io_error: kunmap(page); - unlock_page(page); read_complete: + unlock_page(page); return rc; } @@ -4878,9 +4878,11 @@ void cifs_oplock_break(struct work_struct *work) struct cifsFileInfo *cfile = container_of(work, struct cifsFileInfo, oplock_break); struct inode *inode = d_inode(cfile->dentry); + struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb); struct cifsInodeInfo *cinode = CIFS_I(inode); - struct cifs_tcon *tcon = tlink_tcon(cfile->tlink); - struct TCP_Server_Info *server = tcon->ses->server; + struct cifs_tcon *tcon; + struct TCP_Server_Info *server; + struct tcon_link *tlink; int rc = 0; bool purge_cache = false, oplock_break_cancelled; __u64 persistent_fid, volatile_fid; @@ -4889,6 +4891,12 @@ void cifs_oplock_break(struct work_struct *work) wait_on_bit(&cinode->flags, CIFS_INODE_PENDING_WRITERS, TASK_UNINTERRUPTIBLE); + tlink = cifs_sb_tlink(cifs_sb); + if (IS_ERR(tlink)) + goto out; + tcon = tlink_tcon(tlink); + server = tcon->ses->server; + server->ops->downgrade_oplock(server, cinode, cfile->oplock_level, cfile->oplock_epoch, &purge_cache); @@ -4938,18 +4946,19 @@ oplock_break_ack: /* * MS-SMB2 3.2.5.19.1 and 3.2.5.19.2 (and MS-CIFS 3.2.5.42) do not require * an acknowledgment to be sent when the file has already been closed. - * check for server null, since can race with kill_sb calling tree disconnect. */ spin_lock(&cinode->open_file_lock); - if (tcon->ses && tcon->ses->server && !oplock_break_cancelled && - !list_empty(&cinode->openFileList)) { + /* check list empty since can race with kill_sb calling tree disconnect */ + if (!oplock_break_cancelled && !list_empty(&cinode->openFileList)) { spin_unlock(&cinode->open_file_lock); - rc = tcon->ses->server->ops->oplock_response(tcon, persistent_fid, - volatile_fid, net_fid, cinode); + rc = server->ops->oplock_response(tcon, persistent_fid, + volatile_fid, net_fid, cinode); cifs_dbg(FYI, "Oplock release rc = %d\n", rc); } else spin_unlock(&cinode->open_file_lock); + cifs_put_tlink(tlink); +out: cifs_done_oplock_break(cinode); } diff --git a/fs/smb/client/fs_context.c b/fs/smb/client/fs_context.c index 4946a0c59600..67e16c2ac90e 100644 --- a/fs/smb/client/fs_context.c +++ b/fs/smb/client/fs_context.c @@ -231,6 +231,8 @@ cifs_parse_security_flavors(struct fs_context *fc, char *value, struct smb3_fs_c break; case Opt_sec_none: ctx->nullauth = 1; + kfree(ctx->username); + ctx->username = NULL; break; default: cifs_errorf(fc, "bad security option: %s\n", value); @@ -1201,6 +1203,8 @@ static int smb3_fs_context_parse_param(struct fs_context *fc, case Opt_user: kfree(ctx->username); ctx->username = NULL; + if (ctx->nullauth) + break; if (strlen(param->string) == 0) { /* null user, ie. anonymous authentication */ ctx->nullauth = 1; diff --git a/fs/smb/client/fscache.h b/fs/smb/client/fscache.h index 173999610997..84f3b09367d2 100644 --- a/fs/smb/client/fscache.h +++ b/fs/smb/client/fscache.h @@ -50,12 +50,13 @@ void cifs_fscache_fill_coherency(struct inode *inode, struct cifs_fscache_inode_coherency_data *cd) { struct cifsInodeInfo *cifsi = CIFS_I(inode); + struct timespec64 ctime = inode_get_ctime(inode); memset(cd, 0, sizeof(*cd)); cd->last_write_time_sec = cpu_to_le64(cifsi->netfs.inode.i_mtime.tv_sec); cd->last_write_time_nsec = cpu_to_le32(cifsi->netfs.inode.i_mtime.tv_nsec); - cd->last_change_time_sec = cpu_to_le64(cifsi->netfs.inode.i_ctime.tv_sec); - cd->last_change_time_nsec = cpu_to_le32(cifsi->netfs.inode.i_ctime.tv_nsec); + cd->last_change_time_sec = cpu_to_le64(ctime.tv_sec); + cd->last_change_time_nsec = cpu_to_le32(ctime.tv_nsec); } diff --git a/fs/smb/client/inode.c b/fs/smb/client/inode.c index c3eeae07e139..de2dfbaae821 100644 --- a/fs/smb/client/inode.c +++ b/fs/smb/client/inode.c @@ -58,13 +58,9 @@ static void cifs_set_ops(struct inode *inode) inode->i_data.a_ops = &cifs_addr_ops; break; case S_IFDIR: -#ifdef CONFIG_CIFS_DFS_UPCALL if (IS_AUTOMOUNT(inode)) { - inode->i_op = &cifs_dfs_referral_inode_operations; + inode->i_op = &cifs_namespace_inode_operations; } else { -#else /* NO DFS support, treat as a directory */ - { -#endif inode->i_op = &cifs_dir_inode_ops; inode->i_fop = &cifs_dir_ops; } @@ -172,7 +168,7 @@ cifs_fattr_to_inode(struct inode *inode, struct cifs_fattr *fattr) else inode->i_atime = fattr->cf_atime; inode->i_mtime = fattr->cf_mtime; - inode->i_ctime = fattr->cf_ctime; + inode_set_ctime_to_ts(inode, fattr->cf_ctime); inode->i_rdev = fattr->cf_rdev; cifs_nlink_fattr_to_inode(inode, fattr); inode->i_uid = fattr->cf_uid; @@ -218,7 +214,7 @@ cifs_fattr_to_inode(struct inode *inode, struct cifs_fattr *fattr) } spin_unlock(&inode->i_lock); - if (fattr->cf_flags & CIFS_FATTR_DFS_REFERRAL) + if (fattr->cf_flags & CIFS_FATTR_JUNCTION) inode->i_flags |= S_AUTOMOUNT; if (inode->i_state & I_NEW) cifs_set_ops(inode); @@ -327,14 +323,14 @@ cifs_unix_basic_to_fattr(struct cifs_fattr *fattr, FILE_UNIX_BASIC_INFO *info, * * Needed to setup cifs_fattr data for the directory which is the * junction to the new submount (ie to setup the fake directory - * which represents a DFS referral). + * which represents a DFS referral or reparse mount point). */ -static void -cifs_create_dfs_fattr(struct cifs_fattr *fattr, struct super_block *sb) +static void cifs_create_junction_fattr(struct cifs_fattr *fattr, + struct super_block *sb) { struct cifs_sb_info *cifs_sb = CIFS_SB(sb); - cifs_dbg(FYI, "creating fake fattr for DFS referral\n"); + cifs_dbg(FYI, "%s: creating fake fattr\n", __func__); memset(fattr, 0, sizeof(*fattr)); fattr->cf_mode = S_IFDIR | S_IXUGO | S_IRWXU; @@ -343,7 +339,33 @@ cifs_create_dfs_fattr(struct cifs_fattr *fattr, struct super_block *sb) ktime_get_coarse_real_ts64(&fattr->cf_mtime); fattr->cf_atime = fattr->cf_ctime = fattr->cf_mtime; fattr->cf_nlink = 2; - fattr->cf_flags = CIFS_FATTR_DFS_REFERRAL; + fattr->cf_flags = CIFS_FATTR_JUNCTION; +} + +/* Update inode with final fattr data */ +static int update_inode_info(struct super_block *sb, + struct cifs_fattr *fattr, + struct inode **inode) +{ + struct cifs_sb_info *cifs_sb = CIFS_SB(sb); + int rc = 0; + + if (!*inode) { + *inode = cifs_iget(sb, fattr); + if (!*inode) + rc = -ENOMEM; + return rc; + } + /* We already have inode, update it. + * + * If file type or uniqueid is different, return error. + */ + if (unlikely((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM) && + CIFS_I(*inode)->uniqueid != fattr->cf_uniqueid)) { + CIFS_I(*inode)->time = 0; /* force reval */ + return -ESTALE; + } + return cifs_fattr_to_inode(*inode, fattr); } #ifdef CONFIG_CIFS_ALLOW_INSECURE_LEGACY @@ -373,7 +395,7 @@ cifs_get_file_info_unix(struct file *filp) if (!rc) { cifs_unix_basic_to_fattr(&fattr, &find_data, cifs_sb); } else if (rc == -EREMOTE) { - cifs_create_dfs_fattr(&fattr, inode->i_sb); + cifs_create_junction_fattr(&fattr, inode->i_sb); rc = 0; } else goto cifs_gfiunix_out; @@ -385,17 +407,18 @@ cifs_gfiunix_out: return rc; } -int cifs_get_inode_info_unix(struct inode **pinode, - const unsigned char *full_path, - struct super_block *sb, unsigned int xid) +static int cifs_get_unix_fattr(const unsigned char *full_path, + struct super_block *sb, + struct cifs_fattr *fattr, + struct inode **pinode, + const unsigned int xid) { - int rc; + struct TCP_Server_Info *server; + struct cifs_sb_info *cifs_sb = CIFS_SB(sb); FILE_UNIX_BASIC_INFO find_data; - struct cifs_fattr fattr; struct cifs_tcon *tcon; - struct TCP_Server_Info *server; struct tcon_link *tlink; - struct cifs_sb_info *cifs_sb = CIFS_SB(sb); + int rc, tmprc; cifs_dbg(FYI, "Getting info on %s\n", full_path); @@ -412,59 +435,61 @@ int cifs_get_inode_info_unix(struct inode **pinode, cifs_put_tlink(tlink); if (!rc) { - cifs_unix_basic_to_fattr(&fattr, &find_data, cifs_sb); + cifs_unix_basic_to_fattr(fattr, &find_data, cifs_sb); } else if (rc == -EREMOTE) { - cifs_create_dfs_fattr(&fattr, sb); + cifs_create_junction_fattr(fattr, sb); rc = 0; } else { return rc; } + if (!*pinode) + cifs_fill_uniqueid(sb, fattr); + /* check for Minshall+French symlinks */ if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MF_SYMLINKS) { - int tmprc = check_mf_symlink(xid, tcon, cifs_sb, &fattr, - full_path); - if (tmprc) - cifs_dbg(FYI, "check_mf_symlink: %d\n", tmprc); + tmprc = check_mf_symlink(xid, tcon, cifs_sb, fattr, full_path); + cifs_dbg(FYI, "check_mf_symlink: %d\n", tmprc); } - if (S_ISLNK(fattr.cf_mode) && !fattr.cf_symlink_target) { + if (S_ISLNK(fattr->cf_mode) && !fattr->cf_symlink_target) { if (!server->ops->query_symlink) return -EOPNOTSUPP; - rc = server->ops->query_symlink(xid, tcon, cifs_sb, full_path, - &fattr.cf_symlink_target, false); - if (rc) { - cifs_dbg(FYI, "%s: query_symlink: %d\n", __func__, rc); - goto cgiiu_exit; - } + rc = server->ops->query_symlink(xid, tcon, + cifs_sb, full_path, + &fattr->cf_symlink_target, + NULL); + cifs_dbg(FYI, "%s: query_symlink: %d\n", __func__, rc); } + return rc; +} - if (*pinode == NULL) { - /* get new inode */ - cifs_fill_uniqueid(sb, &fattr); - *pinode = cifs_iget(sb, &fattr); - if (!*pinode) - rc = -ENOMEM; - } else { - /* we already have inode, update it */ - - /* if uniqueid is different, return error */ - if (unlikely(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM && - CIFS_I(*pinode)->uniqueid != fattr.cf_uniqueid)) { - CIFS_I(*pinode)->time = 0; /* force reval */ - rc = -ESTALE; - goto cgiiu_exit; - } +int cifs_get_inode_info_unix(struct inode **pinode, + const unsigned char *full_path, + struct super_block *sb, unsigned int xid) +{ + struct cifs_fattr fattr = {}; + int rc; - /* if filetype is different, return error */ - rc = cifs_fattr_to_inode(*pinode, &fattr); - } + rc = cifs_get_unix_fattr(full_path, sb, &fattr, pinode, xid); + if (rc) + goto out; -cgiiu_exit: + rc = update_inode_info(sb, &fattr, pinode); +out: kfree(fattr.cf_symlink_target); return rc; } #else +static inline int cifs_get_unix_fattr(const unsigned char *full_path, + struct super_block *sb, + struct cifs_fattr *fattr, + struct inode **pinode, + const unsigned int xid) +{ + return -EOPNOTSUPP; +} + int cifs_get_inode_info_unix(struct inode **pinode, const unsigned char *full_path, struct super_block *sb, unsigned int xid) @@ -632,10 +657,11 @@ static int cifs_sfu_mode(struct cifs_fattr *fattr, const unsigned char *path, } /* Fill a cifs_fattr struct with info from POSIX info struct */ -static void smb311_posix_info_to_fattr(struct cifs_fattr *fattr, struct cifs_open_info_data *data, +static void smb311_posix_info_to_fattr(struct cifs_fattr *fattr, + struct cifs_open_info_data *data, struct cifs_sid *owner, struct cifs_sid *group, - struct super_block *sb, bool adjust_tz, bool symlink) + struct super_block *sb) { struct smb311_posix_qinfo *info = &data->posix_fi; struct cifs_sb_info *cifs_sb = CIFS_SB(sb); @@ -655,7 +681,7 @@ static void smb311_posix_info_to_fattr(struct cifs_fattr *fattr, struct cifs_ope fattr->cf_ctime = cifs_NTtimeToUnix(info->ChangeTime); fattr->cf_mtime = cifs_NTtimeToUnix(info->LastWriteTime); - if (adjust_tz) { + if (data->adjust_tz) { fattr->cf_ctime.tv_sec += tcon->ses->server->timeAdj; fattr->cf_mtime.tv_sec += tcon->ses->server->timeAdj; } @@ -669,7 +695,7 @@ static void smb311_posix_info_to_fattr(struct cifs_fattr *fattr, struct cifs_ope /* The srv fs device id is overridden on network mount so setting rdev isn't needed here */ /* fattr->cf_rdev = le32_to_cpu(info->DeviceId); */ - if (symlink) { + if (data->symlink) { fattr->cf_mode |= S_IFLNK; fattr->cf_dtype = DT_LNK; fattr->cf_symlink_target = data->symlink_target; @@ -690,9 +716,46 @@ static void smb311_posix_info_to_fattr(struct cifs_fattr *fattr, struct cifs_ope fattr->cf_mode, fattr->cf_uniqueid, fattr->cf_nlink); } -static void cifs_open_info_to_fattr(struct cifs_fattr *fattr, struct cifs_open_info_data *data, - struct super_block *sb, bool adjust_tz, bool symlink, - u32 reparse_tag) +bool cifs_reparse_point_to_fattr(struct cifs_sb_info *cifs_sb, + struct cifs_fattr *fattr, + u32 tag) +{ + switch (tag) { + case IO_REPARSE_TAG_LX_SYMLINK: + fattr->cf_mode |= S_IFLNK | cifs_sb->ctx->file_mode; + fattr->cf_dtype = DT_LNK; + break; + case IO_REPARSE_TAG_LX_FIFO: + fattr->cf_mode |= S_IFIFO | cifs_sb->ctx->file_mode; + fattr->cf_dtype = DT_FIFO; + break; + case IO_REPARSE_TAG_AF_UNIX: + fattr->cf_mode |= S_IFSOCK | cifs_sb->ctx->file_mode; + fattr->cf_dtype = DT_SOCK; + break; + case IO_REPARSE_TAG_LX_CHR: + fattr->cf_mode |= S_IFCHR | cifs_sb->ctx->file_mode; + fattr->cf_dtype = DT_CHR; + break; + case IO_REPARSE_TAG_LX_BLK: + fattr->cf_mode |= S_IFBLK | cifs_sb->ctx->file_mode; + fattr->cf_dtype = DT_BLK; + break; + case 0: /* SMB1 symlink */ + case IO_REPARSE_TAG_SYMLINK: + case IO_REPARSE_TAG_NFS: + fattr->cf_mode = S_IFLNK; + fattr->cf_dtype = DT_LNK; + break; + default: + return false; + } + return true; +} + +static void cifs_open_info_to_fattr(struct cifs_fattr *fattr, + struct cifs_open_info_data *data, + struct super_block *sb) { struct smb2_file_all_info *info = &data->fi; struct cifs_sb_info *cifs_sb = CIFS_SB(sb); @@ -711,7 +774,7 @@ static void cifs_open_info_to_fattr(struct cifs_fattr *fattr, struct cifs_open_i fattr->cf_ctime = cifs_NTtimeToUnix(info->ChangeTime); fattr->cf_mtime = cifs_NTtimeToUnix(info->LastWriteTime); - if (adjust_tz) { + if (data->adjust_tz) { fattr->cf_ctime.tv_sec += tcon->ses->server->timeAdj; fattr->cf_mtime.tv_sec += tcon->ses->server->timeAdj; } @@ -719,28 +782,13 @@ static void cifs_open_info_to_fattr(struct cifs_fattr *fattr, struct cifs_open_i fattr->cf_eof = le64_to_cpu(info->EndOfFile); fattr->cf_bytes = le64_to_cpu(info->AllocationSize); fattr->cf_createtime = le64_to_cpu(info->CreationTime); - fattr->cf_nlink = le32_to_cpu(info->NumberOfLinks); - if (reparse_tag == IO_REPARSE_TAG_LX_SYMLINK) { - fattr->cf_mode |= S_IFLNK | cifs_sb->ctx->file_mode; - fattr->cf_dtype = DT_LNK; - } else if (reparse_tag == IO_REPARSE_TAG_LX_FIFO) { - fattr->cf_mode |= S_IFIFO | cifs_sb->ctx->file_mode; - fattr->cf_dtype = DT_FIFO; - } else if (reparse_tag == IO_REPARSE_TAG_AF_UNIX) { - fattr->cf_mode |= S_IFSOCK | cifs_sb->ctx->file_mode; - fattr->cf_dtype = DT_SOCK; - } else if (reparse_tag == IO_REPARSE_TAG_LX_CHR) { - fattr->cf_mode |= S_IFCHR | cifs_sb->ctx->file_mode; - fattr->cf_dtype = DT_CHR; - } else if (reparse_tag == IO_REPARSE_TAG_LX_BLK) { - fattr->cf_mode |= S_IFBLK | cifs_sb->ctx->file_mode; - fattr->cf_dtype = DT_BLK; - } else if (symlink || reparse_tag == IO_REPARSE_TAG_SYMLINK || - reparse_tag == IO_REPARSE_TAG_NFS) { - fattr->cf_mode = S_IFLNK; - fattr->cf_dtype = DT_LNK; - } else if (fattr->cf_cifsattrs & ATTR_DIRECTORY) { + + if (cifs_open_data_reparse(data) && + cifs_reparse_point_to_fattr(cifs_sb, fattr, data->reparse_tag)) + goto out_reparse; + + if (fattr->cf_cifsattrs & ATTR_DIRECTORY) { fattr->cf_mode = S_IFDIR | cifs_sb->ctx->dir_mode; fattr->cf_dtype = DT_DIR; /* @@ -769,6 +817,7 @@ static void cifs_open_info_to_fattr(struct cifs_fattr *fattr, struct cifs_open_i } } +out_reparse: if (S_ISLNK(fattr->cf_mode)) { fattr->cf_symlink_target = data->symlink_target; data->symlink_target = NULL; @@ -789,8 +838,6 @@ cifs_get_file_info(struct file *filp) struct cifsFileInfo *cfile = filp->private_data; struct cifs_tcon *tcon = tlink_tcon(cfile->tlink); struct TCP_Server_Info *server = tcon->ses->server; - bool symlink = false; - u32 tag = 0; if (!server->ops->query_file_info) return -ENOSYS; @@ -800,14 +847,15 @@ cifs_get_file_info(struct file *filp) switch (rc) { case 0: /* TODO: add support to query reparse tag */ + data.adjust_tz = false; if (data.symlink_target) { - symlink = true; - tag = IO_REPARSE_TAG_SYMLINK; + data.symlink = true; + data.reparse_tag = IO_REPARSE_TAG_SYMLINK; } - cifs_open_info_to_fattr(&fattr, &data, inode->i_sb, false, symlink, tag); + cifs_open_info_to_fattr(&fattr, &data, inode->i_sb); break; case -EREMOTE: - cifs_create_dfs_fattr(&fattr, inode->i_sb); + cifs_create_junction_fattr(&fattr, inode->i_sb); rc = 0; break; case -EOPNOTSUPP: @@ -960,22 +1008,66 @@ static inline bool is_inode_cache_good(struct inode *ino) return ino && CIFS_CACHE_READ(CIFS_I(ino)) && CIFS_I(ino)->time != 0; } -int cifs_get_inode_info(struct inode **inode, const char *full_path, - struct cifs_open_info_data *data, struct super_block *sb, int xid, - const struct cifs_fid *fid) +static int reparse_info_to_fattr(struct cifs_open_info_data *data, + struct super_block *sb, + const unsigned int xid, + struct cifs_tcon *tcon, + const char *full_path, + struct cifs_fattr *fattr) { + struct TCP_Server_Info *server = tcon->ses->server; + struct cifs_sb_info *cifs_sb = CIFS_SB(sb); + struct kvec rsp_iov, *iov = NULL; + int rsp_buftype = CIFS_NO_BUFFER; + u32 tag = data->reparse_tag; + int rc = 0; + + if (!tag && server->ops->query_reparse_point) { + rc = server->ops->query_reparse_point(xid, tcon, cifs_sb, + full_path, &tag, + &rsp_iov, &rsp_buftype); + if (!rc) + iov = &rsp_iov; + } + switch ((data->reparse_tag = tag)) { + case 0: /* SMB1 symlink */ + iov = NULL; + fallthrough; + case IO_REPARSE_TAG_NFS: + case IO_REPARSE_TAG_SYMLINK: + if (!data->symlink_target && server->ops->query_symlink) { + rc = server->ops->query_symlink(xid, tcon, + cifs_sb, full_path, + &data->symlink_target, + iov); + } + break; + case IO_REPARSE_TAG_MOUNT_POINT: + cifs_create_junction_fattr(fattr, sb); + goto out; + } + + cifs_open_info_to_fattr(fattr, data, sb); +out: + free_rsp_buf(rsp_buftype, rsp_iov.iov_base); + return rc; +} + +static int cifs_get_fattr(struct cifs_open_info_data *data, + struct super_block *sb, int xid, + const struct cifs_fid *fid, + struct cifs_fattr *fattr, + struct inode **inode, + const char *full_path) +{ + struct cifs_open_info_data tmp_data = {}; struct cifs_tcon *tcon; struct TCP_Server_Info *server; struct tcon_link *tlink; struct cifs_sb_info *cifs_sb = CIFS_SB(sb); - bool adjust_tz = false; - struct cifs_fattr fattr = {0}; - bool is_reparse_point = false; - struct cifs_open_info_data tmp_data = {}; void *smb1_backup_rsp_buf = NULL; int rc = 0; int tmprc = 0; - __u32 reparse_tag = 0; tlink = cifs_sb_tlink(cifs_sb); if (IS_ERR(tlink)) @@ -988,12 +1080,8 @@ int cifs_get_inode_info(struct inode **inode, const char *full_path, */ if (!data) { - if (is_inode_cache_good(*inode)) { - cifs_dbg(FYI, "No need to revalidate cached inode sizes\n"); - goto out; - } - rc = server->ops->query_path_info(xid, tcon, cifs_sb, full_path, &tmp_data, - &adjust_tz, &is_reparse_point); + rc = server->ops->query_path_info(xid, tcon, cifs_sb, + full_path, &tmp_data); data = &tmp_data; } @@ -1008,28 +1096,16 @@ int cifs_get_inode_info(struct inode **inode, const char *full_path, * since we have to check if its reparse tag matches a known * special file type e.g. symlink or fifo or char etc. */ - if (is_reparse_point && data->symlink_target) { - reparse_tag = IO_REPARSE_TAG_SYMLINK; - } else if ((le32_to_cpu(data->fi.Attributes) & ATTR_REPARSE) && - server->ops->query_reparse_tag) { - tmprc = server->ops->query_reparse_tag(xid, tcon, cifs_sb, full_path, - &reparse_tag); - if (tmprc) - cifs_dbg(FYI, "%s: query_reparse_tag: rc = %d\n", __func__, tmprc); - if (server->ops->query_symlink) { - tmprc = server->ops->query_symlink(xid, tcon, cifs_sb, full_path, - &data->symlink_target, - is_reparse_point); - if (tmprc) - cifs_dbg(FYI, "%s: query_symlink: rc = %d\n", __func__, - tmprc); - } + if (cifs_open_data_reparse(data)) { + rc = reparse_info_to_fattr(data, sb, xid, tcon, + full_path, fattr); + } else { + cifs_open_info_to_fattr(fattr, data, sb); } - cifs_open_info_to_fattr(&fattr, data, sb, adjust_tz, is_reparse_point, reparse_tag); break; case -EREMOTE: /* DFS link, no metadata available on this server */ - cifs_create_dfs_fattr(&fattr, sb); + cifs_create_junction_fattr(fattr, sb); rc = 0; break; case -EACCES: @@ -1059,8 +1135,8 @@ int cifs_get_inode_info(struct inode **inode, const char *full_path, fdi = (FILE_DIRECTORY_INFO *)fi; si = (SEARCH_ID_FULL_DIR_INFO *)fi; - cifs_dir_info_to_fattr(&fattr, fdi, cifs_sb); - fattr.cf_uniqueid = le64_to_cpu(si->UniqueId); + cifs_dir_info_to_fattr(fattr, fdi, cifs_sb); + fattr->cf_uniqueid = le64_to_cpu(si->UniqueId); /* uniqueid set, skip get inum step */ goto handle_mnt_opt; } else { @@ -1077,10 +1153,10 @@ int cifs_get_inode_info(struct inode **inode, const char *full_path, } /* - * 3. Get or update inode number (fattr.cf_uniqueid) + * 3. Get or update inode number (fattr->cf_uniqueid) */ - cifs_set_fattr_ino(xid, tcon, sb, inode, full_path, data, &fattr); + cifs_set_fattr_ino(xid, tcon, sb, inode, full_path, data, fattr); /* * 4. Tweak fattr based on mount options @@ -1089,17 +1165,17 @@ int cifs_get_inode_info(struct inode **inode, const char *full_path, handle_mnt_opt: #endif /* CONFIG_CIFS_ALLOW_INSECURE_LEGACY */ /* query for SFU type info if supported and needed */ - if (fattr.cf_cifsattrs & ATTR_SYSTEM && - cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UNX_EMUL) { - tmprc = cifs_sfu_type(&fattr, full_path, cifs_sb, xid); + if ((fattr->cf_cifsattrs & ATTR_SYSTEM) && + (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UNX_EMUL)) { + tmprc = cifs_sfu_type(fattr, full_path, cifs_sb, xid); if (tmprc) cifs_dbg(FYI, "cifs_sfu_type failed: %d\n", tmprc); } /* fill in 0777 bits from ACL */ if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MODE_FROM_SID) { - rc = cifs_acl_to_fattr(cifs_sb, &fattr, *inode, true, - full_path, fid); + rc = cifs_acl_to_fattr(cifs_sb, fattr, *inode, + true, full_path, fid); if (rc == -EREMOTE) rc = 0; if (rc) { @@ -1108,8 +1184,8 @@ handle_mnt_opt: goto out; } } else if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_CIFS_ACL) { - rc = cifs_acl_to_fattr(cifs_sb, &fattr, *inode, false, - full_path, fid); + rc = cifs_acl_to_fattr(cifs_sb, fattr, *inode, + false, full_path, fid); if (rc == -EREMOTE) rc = 0; if (rc) { @@ -1121,60 +1197,57 @@ handle_mnt_opt: /* fill in remaining high mode bits e.g. SUID, VTX */ if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UNX_EMUL) - cifs_sfu_mode(&fattr, full_path, cifs_sb, xid); + cifs_sfu_mode(fattr, full_path, cifs_sb, xid); /* check for Minshall+French symlinks */ if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MF_SYMLINKS) { - tmprc = check_mf_symlink(xid, tcon, cifs_sb, &fattr, - full_path); - if (tmprc) - cifs_dbg(FYI, "check_mf_symlink: %d\n", tmprc); + tmprc = check_mf_symlink(xid, tcon, cifs_sb, fattr, full_path); + cifs_dbg(FYI, "check_mf_symlink: %d\n", tmprc); } - /* - * 5. Update inode with final fattr data - */ - - if (!*inode) { - *inode = cifs_iget(sb, &fattr); - if (!*inode) - rc = -ENOMEM; - } else { - /* we already have inode, update it */ - - /* if uniqueid is different, return error */ - if (unlikely(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM && - CIFS_I(*inode)->uniqueid != fattr.cf_uniqueid)) { - CIFS_I(*inode)->time = 0; /* force reval */ - rc = -ESTALE; - goto out; - } - /* if filetype is different, return error */ - rc = cifs_fattr_to_inode(*inode, &fattr); - } out: cifs_buf_release(smb1_backup_rsp_buf); cifs_put_tlink(tlink); cifs_free_open_info(&tmp_data); + return rc; +} + +int cifs_get_inode_info(struct inode **inode, + const char *full_path, + struct cifs_open_info_data *data, + struct super_block *sb, int xid, + const struct cifs_fid *fid) +{ + struct cifs_fattr fattr = {}; + int rc; + + if (is_inode_cache_good(*inode)) { + cifs_dbg(FYI, "No need to revalidate cached inode sizes\n"); + return 0; + } + + rc = cifs_get_fattr(data, sb, xid, fid, &fattr, inode, full_path); + if (rc) + goto out; + + rc = update_inode_info(sb, &fattr, inode); +out: kfree(fattr.cf_symlink_target); return rc; } -int -smb311_posix_get_inode_info(struct inode **inode, - const char *full_path, - struct super_block *sb, unsigned int xid) +static int smb311_posix_get_fattr(struct cifs_fattr *fattr, + const char *full_path, + struct super_block *sb, + const unsigned int xid) { + struct cifs_open_info_data data = {}; + struct cifs_sb_info *cifs_sb = CIFS_SB(sb); struct cifs_tcon *tcon; struct tcon_link *tlink; - struct cifs_sb_info *cifs_sb = CIFS_SB(sb); - bool adjust_tz = false; - struct cifs_fattr fattr = {0}; - bool symlink = false; - struct cifs_open_info_data data = {}; struct cifs_sid owner, group; - int rc = 0; - int tmprc = 0; + int tmprc; + int rc; tlink = cifs_sb_tlink(cifs_sb); if (IS_ERR(tlink)) @@ -1185,14 +1258,9 @@ smb311_posix_get_inode_info(struct inode **inode, * 1. Fetch file metadata */ - if (is_inode_cache_good(*inode)) { - cifs_dbg(FYI, "No need to revalidate cached inode sizes\n"); - goto out; - } - - rc = smb311_posix_query_path_info(xid, tcon, cifs_sb, full_path, &data, - &owner, &group, &adjust_tz, - &symlink); + rc = smb311_posix_query_path_info(xid, tcon, cifs_sb, + full_path, &data, + &owner, &group); /* * 2. Convert it to internal cifs metadata (fattr) @@ -1200,12 +1268,11 @@ smb311_posix_get_inode_info(struct inode **inode, switch (rc) { case 0: - smb311_posix_info_to_fattr(&fattr, &data, &owner, &group, - sb, adjust_tz, symlink); + smb311_posix_info_to_fattr(fattr, &data, &owner, &group, sb); break; case -EREMOTE: /* DFS link, no metadata available on this server */ - cifs_create_dfs_fattr(&fattr, sb); + cifs_create_junction_fattr(fattr, sb); rc = 0; break; case -EACCES: @@ -1221,49 +1288,42 @@ smb311_posix_get_inode_info(struct inode **inode, goto out; } - /* * 3. Tweak fattr based on mount options */ - /* check for Minshall+French symlinks */ if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MF_SYMLINKS) { - tmprc = check_mf_symlink(xid, tcon, cifs_sb, &fattr, - full_path); - if (tmprc) - cifs_dbg(FYI, "check_mf_symlink: %d\n", tmprc); + tmprc = check_mf_symlink(xid, tcon, cifs_sb, fattr, full_path); + cifs_dbg(FYI, "check_mf_symlink: %d\n", tmprc); } - /* - * 4. Update inode with final fattr data - */ - - if (!*inode) { - *inode = cifs_iget(sb, &fattr); - if (!*inode) - rc = -ENOMEM; - } else { - /* we already have inode, update it */ +out: + cifs_put_tlink(tlink); + cifs_free_open_info(&data); + return rc; +} - /* if uniqueid is different, return error */ - if (unlikely(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM && - CIFS_I(*inode)->uniqueid != fattr.cf_uniqueid)) { - CIFS_I(*inode)->time = 0; /* force reval */ - rc = -ESTALE; - goto out; - } +int smb311_posix_get_inode_info(struct inode **inode, const char *full_path, + struct super_block *sb, const unsigned int xid) +{ + struct cifs_fattr fattr = {}; + int rc; - /* if filetype is different, return error */ - rc = cifs_fattr_to_inode(*inode, &fattr); + if (is_inode_cache_good(*inode)) { + cifs_dbg(FYI, "No need to revalidate cached inode sizes\n"); + return 0; } + + rc = smb311_posix_get_fattr(&fattr, full_path, sb, xid); + if (rc) + goto out; + + rc = update_inode_info(sb, &fattr, inode); out: - cifs_put_tlink(tlink); - cifs_free_open_info(&data); kfree(fattr.cf_symlink_target); return rc; } - static const struct inode_operations cifs_ipc_inode_ops = { .lookup = cifs_lookup, }; @@ -1367,13 +1427,14 @@ retry_iget5_locked: /* gets root inode */ struct inode *cifs_root_iget(struct super_block *sb) { - unsigned int xid; struct cifs_sb_info *cifs_sb = CIFS_SB(sb); - struct inode *inode = NULL; - long rc; + struct cifs_fattr fattr = {}; struct cifs_tcon *tcon = cifs_sb_master_tcon(cifs_sb); + struct inode *inode = NULL; + unsigned int xid; char *path = NULL; int len; + int rc; if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_USE_PREFIX_PATH) && cifs_sb->prepath) { @@ -1391,21 +1452,29 @@ struct inode *cifs_root_iget(struct super_block *sb) xid = get_xid(); if (tcon->unix_ext) { - rc = cifs_get_inode_info_unix(&inode, path, sb, xid); + rc = cifs_get_unix_fattr(path, sb, &fattr, &inode, xid); /* some servers mistakenly claim POSIX support */ if (rc != -EOPNOTSUPP) - goto iget_no_retry; + goto iget_root; cifs_dbg(VFS, "server does not support POSIX extensions\n"); tcon->unix_ext = false; } convert_delimiter(path, CIFS_DIR_SEP(cifs_sb)); if (tcon->posix_extensions) - rc = smb311_posix_get_inode_info(&inode, path, sb, xid); + rc = smb311_posix_get_fattr(&fattr, path, sb, xid); else - rc = cifs_get_inode_info(&inode, path, NULL, sb, xid, NULL); + rc = cifs_get_fattr(NULL, sb, xid, NULL, &fattr, &inode, path); + +iget_root: + if (!rc) { + if (fattr.cf_flags & CIFS_FATTR_JUNCTION) { + fattr.cf_flags &= ~CIFS_FATTR_JUNCTION; + cifs_autodisable_serverino(cifs_sb); + } + inode = cifs_iget(sb, &fattr); + } -iget_no_retry: if (!inode) { inode = ERR_PTR(rc); goto out; @@ -1429,6 +1498,7 @@ iget_no_retry: out: kfree(path); free_xid(xid); + kfree(fattr.cf_symlink_target); return inode; } @@ -1744,9 +1814,9 @@ out_reval: cifs_inode = CIFS_I(inode); cifs_inode->time = 0; /* will force revalidate to get info when needed */ - inode->i_ctime = current_time(inode); + inode_set_ctime_current(inode); } - dir->i_ctime = dir->i_mtime = current_time(dir); + dir->i_mtime = inode_set_ctime_current(dir); cifs_inode = CIFS_I(dir); CIFS_I(dir)->time = 0; /* force revalidate of dir as well */ unlink_out: @@ -2060,8 +2130,8 @@ int cifs_rmdir(struct inode *inode, struct dentry *direntry) */ cifsInode->time = 0; - d_inode(direntry)->i_ctime = inode->i_ctime = inode->i_mtime = - current_time(inode); + inode_set_ctime_current(d_inode(direntry)); + inode->i_mtime = inode_set_ctime_current(inode); rmdir_exit: free_dentry_path(page); @@ -2267,8 +2337,8 @@ unlink_target: /* force revalidate to go get info when needed */ CIFS_I(source_dir)->time = CIFS_I(target_dir)->time = 0; - source_dir->i_ctime = source_dir->i_mtime = target_dir->i_ctime = - target_dir->i_mtime = current_time(source_dir); + source_dir->i_mtime = target_dir->i_mtime = inode_set_ctime_to_ts(source_dir, + inode_set_ctime_current(target_dir)); cifs_rename_exit: kfree(info_buf_source); @@ -2540,7 +2610,7 @@ int cifs_getattr(struct mnt_idmap *idmap, const struct path *path, return rc; } - generic_fillattr(&nop_mnt_idmap, inode, stat); + generic_fillattr(&nop_mnt_idmap, request_mask, inode, stat); stat->blksize = cifs_sb->ctx->bsize; stat->ino = CIFS_I(inode)->uniqueid; diff --git a/fs/smb/client/misc.c b/fs/smb/client/misc.c index d7e85d9a2655..366b755ca913 100644 --- a/fs/smb/client/misc.c +++ b/fs/smb/client/misc.c @@ -476,7 +476,7 @@ is_valid_oplock_break(char *buffer, struct TCP_Server_Info *srv) return false; /* If server is a channel, select the primary channel */ - pserver = CIFS_SERVER_IS_CHAN(srv) ? srv->primary_server : srv; + pserver = SERVER_IS_CHAN(srv) ? srv->primary_server : srv; /* look up tcon based on tid & uid */ spin_lock(&cifs_tcp_ses_lock); diff --git a/fs/smb/client/cifs_dfs_ref.c b/fs/smb/client/namespace.c index b1c2499b1c3b..c8f5ed8a69f1 100644 --- a/fs/smb/client/cifs_dfs_ref.c +++ b/fs/smb/client/namespace.c @@ -1,12 +1,12 @@ // SPDX-License-Identifier: GPL-2.0-or-later /* - * Contains the CIFS DFS referral mounting routines used for handling - * traversal via DFS junction point + * Contains mounting routines used for handling traversal via SMB junctions. * * Copyright (c) 2007 Igor Mammedov * Copyright (C) International Business Machines Corp., 2008 * Author(s): Igor Mammedov (niallain@gmail.com) * Steve French (sfrench@us.ibm.com) + * Copyright (c) 2023 Paulo Alcantara <palcantara@suse.de> */ #include <linux/dcache.h> @@ -19,32 +19,31 @@ #include "cifsglob.h" #include "cifsproto.h" #include "cifsfs.h" -#include "dns_resolve.h" #include "cifs_debug.h" -#include "dfs.h" #include "fs_context.h" -static LIST_HEAD(cifs_dfs_automount_list); +static LIST_HEAD(cifs_automount_list); -static void cifs_dfs_expire_automounts(struct work_struct *work); -static DECLARE_DELAYED_WORK(cifs_dfs_automount_task, - cifs_dfs_expire_automounts); -static int cifs_dfs_mountpoint_expiry_timeout = 500 * HZ; +static void cifs_expire_automounts(struct work_struct *work); +static DECLARE_DELAYED_WORK(cifs_automount_task, + cifs_expire_automounts); +static int cifs_mountpoint_expiry_timeout = 500 * HZ; -static void cifs_dfs_expire_automounts(struct work_struct *work) +static void cifs_expire_automounts(struct work_struct *work) { - struct list_head *list = &cifs_dfs_automount_list; + struct list_head *list = &cifs_automount_list; mark_mounts_for_expiry(list); if (!list_empty(list)) - schedule_delayed_work(&cifs_dfs_automount_task, - cifs_dfs_mountpoint_expiry_timeout); + schedule_delayed_work(&cifs_automount_task, + cifs_mountpoint_expiry_timeout); } -void cifs_dfs_release_automount_timer(void) +void cifs_release_automount_timer(void) { - BUG_ON(!list_empty(&cifs_dfs_automount_list)); - cancel_delayed_work_sync(&cifs_dfs_automount_task); + if (WARN_ON(!list_empty(&cifs_automount_list))) + return; + cancel_delayed_work_sync(&cifs_automount_task); } /** @@ -118,26 +117,53 @@ cifs_build_devname(char *nodename, const char *prepath) return dev; } -static int set_dest_addr(struct smb3_fs_context *ctx) +/* Return full path out of a dentry set for automount */ +static char *automount_fullpath(struct dentry *dentry, void *page) { - struct sockaddr *addr = (struct sockaddr *)&ctx->dstaddr; - int rc; + struct cifs_sb_info *cifs_sb = CIFS_SB(dentry->d_sb); + struct cifs_tcon *tcon = cifs_sb_master_tcon(cifs_sb); + size_t len; + char *s; + + spin_lock(&tcon->tc_lock); + if (!tcon->origin_fullpath) { + spin_unlock(&tcon->tc_lock); + return build_path_from_dentry_optional_prefix(dentry, + page, + true); + } + spin_unlock(&tcon->tc_lock); + + s = dentry_path_raw(dentry, page, PATH_MAX); + if (IS_ERR(s)) + return s; + /* for root, we want "" */ + if (!s[1]) + s++; + + spin_lock(&tcon->tc_lock); + len = strlen(tcon->origin_fullpath); + if (s < (char *)page + len) { + spin_unlock(&tcon->tc_lock); + return ERR_PTR(-ENAMETOOLONG); + } + + s -= len; + memcpy(s, tcon->origin_fullpath, len); + spin_unlock(&tcon->tc_lock); + convert_delimiter(s, '/'); - rc = dns_resolve_server_name_to_ip(ctx->source, addr, NULL); - if (!rc) - cifs_set_port(addr, ctx->port); - return rc; + return s; } /* * Create a vfsmount that we can automount */ -static struct vfsmount *cifs_dfs_do_automount(struct path *path) +static struct vfsmount *cifs_do_automount(struct path *path) { int rc; struct dentry *mntpt = path->dentry; struct fs_context *fc; - struct cifs_sb_info *cifs_sb; void *page = NULL; struct smb3_fs_context *ctx, *cur_ctx; struct smb3_fs_context tmp; @@ -147,17 +173,7 @@ static struct vfsmount *cifs_dfs_do_automount(struct path *path) if (IS_ROOT(mntpt)) return ERR_PTR(-ESTALE); - /* - * The MSDFS spec states that paths in DFS referral requests and - * responses must be prefixed by a single '\' character instead of - * the double backslashes usually used in the UNC. This function - * gives us the latter, so we must adjust the result. - */ - cifs_sb = CIFS_SB(mntpt->d_sb); - if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_DFS) - return ERR_PTR(-EREMOTE); - - cur_ctx = cifs_sb->ctx; + cur_ctx = CIFS_SB(mntpt->d_sb)->ctx; fc = fs_context_for_submount(path->mnt->mnt_sb->s_type, mntpt); if (IS_ERR(fc)) @@ -166,7 +182,7 @@ static struct vfsmount *cifs_dfs_do_automount(struct path *path) ctx = smb3_fc2context(fc); page = alloc_dentry_path(); - full_path = dfs_get_automount_devname(mntpt, page); + full_path = automount_fullpath(mntpt, page); if (IS_ERR(full_path)) { mnt = ERR_CAST(full_path); goto out; @@ -196,15 +212,10 @@ static struct vfsmount *cifs_dfs_do_automount(struct path *path) ctx->source = NULL; goto out; } - cifs_dbg(FYI, "%s: ctx: source=%s UNC=%s prepath=%s dstaddr=%pISpc\n", - __func__, ctx->source, ctx->UNC, ctx->prepath, &ctx->dstaddr); - - rc = set_dest_addr(ctx); - if (!rc) - mnt = fc_mount(fc); - else - mnt = ERR_PTR(rc); + cifs_dbg(FYI, "%s: ctx: source=%s UNC=%s prepath=%s\n", + __func__, ctx->source, ctx->UNC, ctx->prepath); + mnt = fc_mount(fc); out: put_fs_context(fc); free_dentry_path(page); @@ -214,25 +225,25 @@ out: /* * Attempt to automount the referral */ -struct vfsmount *cifs_dfs_d_automount(struct path *path) +struct vfsmount *cifs_d_automount(struct path *path) { struct vfsmount *newmnt; cifs_dbg(FYI, "%s: %pd\n", __func__, path->dentry); - newmnt = cifs_dfs_do_automount(path); + newmnt = cifs_do_automount(path); if (IS_ERR(newmnt)) { cifs_dbg(FYI, "leaving %s [automount failed]\n" , __func__); return newmnt; } mntget(newmnt); /* prevent immediate expiration */ - mnt_set_expiry(newmnt, &cifs_dfs_automount_list); - schedule_delayed_work(&cifs_dfs_automount_task, - cifs_dfs_mountpoint_expiry_timeout); + mnt_set_expiry(newmnt, &cifs_automount_list); + schedule_delayed_work(&cifs_automount_task, + cifs_mountpoint_expiry_timeout); cifs_dbg(FYI, "leaving %s [ok]\n" , __func__); return newmnt; } -const struct inode_operations cifs_dfs_referral_inode_operations = { +const struct inode_operations cifs_namespace_inode_operations = { }; diff --git a/fs/smb/client/readdir.c b/fs/smb/client/readdir.c index ef638086d734..47fc22de8d20 100644 --- a/fs/smb/client/readdir.c +++ b/fs/smb/client/readdir.c @@ -143,6 +143,7 @@ static bool reparse_file_needs_reval(const struct cifs_fattr *fattr) case IO_REPARSE_TAG_DFSR: case IO_REPARSE_TAG_SYMLINK: case IO_REPARSE_TAG_NFS: + case IO_REPARSE_TAG_MOUNT_POINT: case 0: return true; } @@ -163,29 +164,19 @@ cifs_fill_common_info(struct cifs_fattr *fattr, struct cifs_sb_info *cifs_sb) * TODO: go through all documented reparse tags to see if we can * reasonably map some of them to directories vs. files vs. symlinks */ + if ((fattr->cf_cifsattrs & ATTR_REPARSE) && + cifs_reparse_point_to_fattr(cifs_sb, fattr, fattr->cf_cifstag)) + goto out_reparse; + if (fattr->cf_cifsattrs & ATTR_DIRECTORY) { fattr->cf_mode = S_IFDIR | cifs_sb->ctx->dir_mode; fattr->cf_dtype = DT_DIR; - } else if (fattr->cf_cifstag == IO_REPARSE_TAG_LX_SYMLINK) { - fattr->cf_mode |= S_IFLNK | cifs_sb->ctx->file_mode; - fattr->cf_dtype = DT_LNK; - } else if (fattr->cf_cifstag == IO_REPARSE_TAG_LX_FIFO) { - fattr->cf_mode |= S_IFIFO | cifs_sb->ctx->file_mode; - fattr->cf_dtype = DT_FIFO; - } else if (fattr->cf_cifstag == IO_REPARSE_TAG_AF_UNIX) { - fattr->cf_mode |= S_IFSOCK | cifs_sb->ctx->file_mode; - fattr->cf_dtype = DT_SOCK; - } else if (fattr->cf_cifstag == IO_REPARSE_TAG_LX_CHR) { - fattr->cf_mode |= S_IFCHR | cifs_sb->ctx->file_mode; - fattr->cf_dtype = DT_CHR; - } else if (fattr->cf_cifstag == IO_REPARSE_TAG_LX_BLK) { - fattr->cf_mode |= S_IFBLK | cifs_sb->ctx->file_mode; - fattr->cf_dtype = DT_BLK; - } else { /* TODO: should we mark some other reparse points (like DFSR) as directories? */ + } else { fattr->cf_mode = S_IFREG | cifs_sb->ctx->file_mode; fattr->cf_dtype = DT_REG; } +out_reparse: /* * We need to revalidate it further to make a decision about whether it * is a symbolic link, DFS referral or a reparse point with a direct diff --git a/fs/smb/client/sess.c b/fs/smb/client/sess.c index c57ca2050b73..79f26c560edf 100644 --- a/fs/smb/client/sess.c +++ b/fs/smb/client/sess.c @@ -323,12 +323,12 @@ cifs_chan_update_iface(struct cifs_ses *ses, struct TCP_Server_Info *server) ses->chans[chan_index].iface = iface; /* No iface is found. if secondary chan, drop connection */ - if (!iface && CIFS_SERVER_IS_CHAN(server)) + if (!iface && SERVER_IS_CHAN(server)) ses->chans[chan_index].server = NULL; spin_unlock(&ses->chan_lock); - if (!iface && CIFS_SERVER_IS_CHAN(server)) + if (!iface && SERVER_IS_CHAN(server)) cifs_put_tcp_session(server, false); return rc; @@ -360,11 +360,11 @@ cifs_ses_add_channel(struct cifs_sb_info *cifs_sb, struct cifs_ses *ses, { struct TCP_Server_Info *chan_server; struct cifs_chan *chan; - struct smb3_fs_context ctx = {NULL}; + struct smb3_fs_context *ctx; static const char unc_fmt[] = "\\%s\\foo"; - char unc[sizeof(unc_fmt)+SERVER_NAME_LEN_WITH_NULL] = {0}; struct sockaddr_in *ipv4 = (struct sockaddr_in *)&iface->sockaddr; struct sockaddr_in6 *ipv6 = (struct sockaddr_in6 *)&iface->sockaddr; + size_t len; int rc; unsigned int xid = get_xid(); @@ -388,54 +388,64 @@ cifs_ses_add_channel(struct cifs_sb_info *cifs_sb, struct cifs_ses *ses, * the session and server without caring about memory * management. */ + ctx = kzalloc(sizeof(*ctx), GFP_KERNEL); + if (!ctx) { + rc = -ENOMEM; + goto out_free_xid; + } /* Always make new connection for now (TODO?) */ - ctx.nosharesock = true; + ctx->nosharesock = true; /* Auth */ - ctx.domainauto = ses->domainAuto; - ctx.domainname = ses->domainName; + ctx->domainauto = ses->domainAuto; + ctx->domainname = ses->domainName; /* no hostname for extra channels */ - ctx.server_hostname = ""; + ctx->server_hostname = ""; - ctx.username = ses->user_name; - ctx.password = ses->password; - ctx.sectype = ses->sectype; - ctx.sign = ses->sign; + ctx->username = ses->user_name; + ctx->password = ses->password; + ctx->sectype = ses->sectype; + ctx->sign = ses->sign; /* UNC and paths */ /* XXX: Use ses->server->hostname? */ - sprintf(unc, unc_fmt, ses->ip_addr); - ctx.UNC = unc; - ctx.prepath = ""; + len = sizeof(unc_fmt) + SERVER_NAME_LEN_WITH_NULL; + ctx->UNC = kzalloc(len, GFP_KERNEL); + if (!ctx->UNC) { + rc = -ENOMEM; + goto out_free_ctx; + } + scnprintf(ctx->UNC, len, unc_fmt, ses->ip_addr); + ctx->prepath = ""; /* Reuse same version as master connection */ - ctx.vals = ses->server->vals; - ctx.ops = ses->server->ops; + ctx->vals = ses->server->vals; + ctx->ops = ses->server->ops; - ctx.noblocksnd = ses->server->noblocksnd; - ctx.noautotune = ses->server->noautotune; - ctx.sockopt_tcp_nodelay = ses->server->tcp_nodelay; - ctx.echo_interval = ses->server->echo_interval / HZ; - ctx.max_credits = ses->server->max_credits; + ctx->noblocksnd = ses->server->noblocksnd; + ctx->noautotune = ses->server->noautotune; + ctx->sockopt_tcp_nodelay = ses->server->tcp_nodelay; + ctx->echo_interval = ses->server->echo_interval / HZ; + ctx->max_credits = ses->server->max_credits; /* * This will be used for encoding/decoding user/domain/pw * during sess setup auth. */ - ctx.local_nls = cifs_sb->local_nls; + ctx->local_nls = cifs_sb->local_nls; /* Use RDMA if possible */ - ctx.rdma = iface->rdma_capable; - memcpy(&ctx.dstaddr, &iface->sockaddr, sizeof(struct sockaddr_storage)); + ctx->rdma = iface->rdma_capable; + memcpy(&ctx->dstaddr, &iface->sockaddr, sizeof(ctx->dstaddr)); /* reuse master con client guid */ - memcpy(&ctx.client_guid, ses->server->client_guid, - SMB2_CLIENT_GUID_SIZE); - ctx.use_client_guid = true; + memcpy(&ctx->client_guid, ses->server->client_guid, + sizeof(ctx->client_guid)); + ctx->use_client_guid = true; - chan_server = cifs_get_tcp_session(&ctx, ses->server); + chan_server = cifs_get_tcp_session(ctx, ses->server); spin_lock(&ses->chan_lock); chan = &ses->chans[ses->chan_count]; @@ -497,6 +507,10 @@ out: cifs_put_tcp_session(chan->server, 0); } + kfree(ctx->UNC); +out_free_ctx: + kfree(ctx); +out_free_xid: free_xid(xid); return rc; } diff --git a/fs/smb/client/smb1ops.c b/fs/smb/client/smb1ops.c index 7d1b3fc014d9..9bf8735cdd1e 100644 --- a/fs/smb/client/smb1ops.c +++ b/fs/smb/client/smb1ops.c @@ -542,14 +542,17 @@ cifs_is_path_accessible(const unsigned int xid, struct cifs_tcon *tcon, return rc; } -static int cifs_query_path_info(const unsigned int xid, struct cifs_tcon *tcon, - struct cifs_sb_info *cifs_sb, const char *full_path, - struct cifs_open_info_data *data, bool *adjustTZ, bool *symlink) +static int cifs_query_path_info(const unsigned int xid, + struct cifs_tcon *tcon, + struct cifs_sb_info *cifs_sb, + const char *full_path, + struct cifs_open_info_data *data) { int rc; FILE_ALL_INFO fi = {}; - *symlink = false; + data->symlink = false; + data->adjust_tz = false; /* could do find first instead but this returns more info */ rc = CIFSSMBQPathInfo(xid, tcon, full_path, &fi, 0 /* not legacy */, cifs_sb->local_nls, @@ -562,7 +565,7 @@ static int cifs_query_path_info(const unsigned int xid, struct cifs_tcon *tcon, if ((rc == -EOPNOTSUPP) || (rc == -EINVAL)) { rc = SMBQueryInformation(xid, tcon, full_path, &fi, cifs_sb->local_nls, cifs_remap(cifs_sb)); - *adjustTZ = true; + data->adjust_tz = true; } if (!rc) { @@ -589,7 +592,7 @@ static int cifs_query_path_info(const unsigned int xid, struct cifs_tcon *tcon, /* Need to check if this is a symbolic link or not */ tmprc = CIFS_open(xid, &oparms, &oplock, NULL); if (tmprc == -EOPNOTSUPP) - *symlink = true; + data->symlink = true; else if (tmprc == 0) CIFSSMBClose(xid, tcon, fid.netfid); } @@ -969,13 +972,16 @@ cifs_unix_dfs_readlink(const unsigned int xid, struct cifs_tcon *tcon, #endif } -static int -cifs_query_symlink(const unsigned int xid, struct cifs_tcon *tcon, - struct cifs_sb_info *cifs_sb, const char *full_path, - char **target_path, bool is_reparse_point) +static int cifs_query_symlink(const unsigned int xid, + struct cifs_tcon *tcon, + struct cifs_sb_info *cifs_sb, + const char *full_path, + char **target_path, + struct kvec *rsp_iov) { int rc; int oplock = 0; + bool is_reparse_point = !!rsp_iov; struct cifs_fid fid; struct cifs_open_parms oparms; diff --git a/fs/smb/client/smb2inode.c b/fs/smb/client/smb2inode.c index 8e696fbd72fa..b41e2e872b22 100644 --- a/fs/smb/client/smb2inode.c +++ b/fs/smb/client/smb2inode.c @@ -35,34 +35,22 @@ free_set_inf_compound(struct smb_rqst *rqst) SMB2_close_free(&rqst[2]); } - -struct cop_vars { - struct cifs_open_parms oparms; - struct kvec rsp_iov[3]; - struct smb_rqst rqst[3]; - struct kvec open_iov[SMB2_CREATE_IOV_SIZE]; - struct kvec qi_iov[1]; - struct kvec si_iov[SMB2_SET_INFO_IOV_SIZE]; - struct kvec close_iov[1]; - struct smb2_file_rename_info rename_info; - struct smb2_file_link_info link_info; -}; - /* * note: If cfile is passed, the reference to it is dropped here. * So make sure that you do not reuse cfile after return from this func. * - * If passing @err_iov and @err_buftype, ensure to make them both large enough (>= 3) to hold all - * error responses. Caller is also responsible for freeing them up. + * If passing @out_iov and @out_buftype, ensure to make them both large enough + * (>= 3) to hold all compounded responses. Caller is also responsible for + * freeing them up with free_rsp_buf(). */ static int smb2_compound_op(const unsigned int xid, struct cifs_tcon *tcon, struct cifs_sb_info *cifs_sb, const char *full_path, __u32 desired_access, __u32 create_disposition, __u32 create_options, umode_t mode, void *ptr, int command, struct cifsFileInfo *cfile, __u8 **extbuf, size_t *extbuflen, - struct kvec *err_iov, int *err_buftype) + struct kvec *out_iov, int *out_buftype) { - struct cop_vars *vars = NULL; + struct smb2_compound_vars *vars = NULL; struct kvec *rsp_iov; struct smb_rqst *rqst; int rc; @@ -133,7 +121,7 @@ static int smb2_compound_op(const unsigned int xid, struct cifs_tcon *tcon, /* Operation */ switch (command) { case SMB2_OP_QUERY_INFO: - rqst[num_rqst].rq_iov = &vars->qi_iov[0]; + rqst[num_rqst].rq_iov = &vars->qi_iov; rqst[num_rqst].rq_nvec = 1; if (cfile) @@ -167,7 +155,7 @@ static int smb2_compound_op(const unsigned int xid, struct cifs_tcon *tcon, full_path); break; case SMB2_OP_POSIX_QUERY_INFO: - rqst[num_rqst].rq_iov = &vars->qi_iov[0]; + rqst[num_rqst].rq_iov = &vars->qi_iov; rqst[num_rqst].rq_nvec = 1; if (cfile) @@ -375,7 +363,7 @@ static int smb2_compound_op(const unsigned int xid, struct cifs_tcon *tcon, goto after_close; /* Close */ flags |= CIFS_CP_CREATE_CLOSE_OP; - rqst[num_rqst].rq_iov = &vars->close_iov[0]; + rqst[num_rqst].rq_iov = &vars->close_iov; rqst[num_rqst].rq_nvec = 1; rc = SMB2_close_init(tcon, server, &rqst[num_rqst], COMPOUND_FID, @@ -529,9 +517,9 @@ static int smb2_compound_op(const unsigned int xid, struct cifs_tcon *tcon, if (cfile) cifsFileInfo_put(cfile); - if (rc && err_iov && err_buftype) { - memcpy(err_iov, rsp_iov, 3 * sizeof(*err_iov)); - memcpy(err_buftype, resp_buftype, 3 * sizeof(*err_buftype)); + if (out_iov && out_buftype) { + memcpy(out_iov, rsp_iov, 3 * sizeof(*out_iov)); + memcpy(out_buftype, resp_buftype, 3 * sizeof(*out_buftype)); } else { free_rsp_buf(resp_buftype[0], rsp_iov[0].iov_base); free_rsp_buf(resp_buftype[1], rsp_iov[1].iov_base); @@ -541,20 +529,50 @@ static int smb2_compound_op(const unsigned int xid, struct cifs_tcon *tcon, return rc; } -int smb2_query_path_info(const unsigned int xid, struct cifs_tcon *tcon, - struct cifs_sb_info *cifs_sb, const char *full_path, - struct cifs_open_info_data *data, bool *adjust_tz, bool *reparse) +static int parse_create_response(struct cifs_open_info_data *data, + struct cifs_sb_info *cifs_sb, + const struct kvec *iov) +{ + struct smb2_create_rsp *rsp = iov->iov_base; + bool reparse_point = false; + u32 tag = 0; + int rc = 0; + + switch (rsp->hdr.Status) { + case STATUS_STOPPED_ON_SYMLINK: + rc = smb2_parse_symlink_response(cifs_sb, iov, + &data->symlink_target); + if (rc) + return rc; + tag = IO_REPARSE_TAG_SYMLINK; + reparse_point = true; + break; + case STATUS_SUCCESS: + reparse_point = !!(rsp->Flags & SMB2_CREATE_FLAG_REPARSEPOINT); + break; + } + data->reparse_point = reparse_point; + data->reparse_tag = tag; + return rc; +} + +int smb2_query_path_info(const unsigned int xid, + struct cifs_tcon *tcon, + struct cifs_sb_info *cifs_sb, + const char *full_path, + struct cifs_open_info_data *data) { __u32 create_options = 0; struct cifsFileInfo *cfile; struct cached_fid *cfid = NULL; - struct kvec err_iov[3] = {}; - int err_buftype[3] = {}; + struct smb2_hdr *hdr; + struct kvec out_iov[3] = {}; + int out_buftype[3] = {}; bool islink; int rc, rc2; - *adjust_tz = false; - *reparse = false; + data->adjust_tz = false; + data->reparse_point = false; if (strcmp(full_path, "")) rc = -ENOENT; @@ -575,69 +593,73 @@ int smb2_query_path_info(const unsigned int xid, struct cifs_tcon *tcon, cifs_get_readable_path(tcon, full_path, &cfile); rc = smb2_compound_op(xid, tcon, cifs_sb, full_path, FILE_READ_ATTRIBUTES, FILE_OPEN, create_options, ACL_NO_MODE, data, SMB2_OP_QUERY_INFO, cfile, - NULL, NULL, err_iov, err_buftype); - if (rc) { - struct smb2_hdr *hdr = err_iov[0].iov_base; - - if (unlikely(!hdr || err_buftype[0] == CIFS_NO_BUFFER)) + NULL, NULL, out_iov, out_buftype); + hdr = out_iov[0].iov_base; + /* + * If first iov is unset, then SMB session was dropped or we've got a + * cached open file (@cfile). + */ + if (!hdr || out_buftype[0] == CIFS_NO_BUFFER) + goto out; + + switch (rc) { + case 0: + case -EOPNOTSUPP: + rc = parse_create_response(data, cifs_sb, &out_iov[0]); + if (rc || !data->reparse_point) goto out; - if (rc == -EOPNOTSUPP && hdr->Command == SMB2_CREATE && - hdr->Status == STATUS_STOPPED_ON_SYMLINK) { - rc = smb2_parse_symlink_response(cifs_sb, err_iov, - &data->symlink_target); - if (rc) - goto out; - - *reparse = true; - create_options |= OPEN_REPARSE_POINT; - - /* Failed on a symbolic link - query a reparse point info */ - cifs_get_readable_path(tcon, full_path, &cfile); - rc = smb2_compound_op(xid, tcon, cifs_sb, full_path, - FILE_READ_ATTRIBUTES, FILE_OPEN, - create_options, ACL_NO_MODE, data, - SMB2_OP_QUERY_INFO, cfile, NULL, NULL, - NULL, NULL); + + create_options |= OPEN_REPARSE_POINT; + /* Failed on a symbolic link - query a reparse point info */ + cifs_get_readable_path(tcon, full_path, &cfile); + rc = smb2_compound_op(xid, tcon, cifs_sb, full_path, + FILE_READ_ATTRIBUTES, FILE_OPEN, + create_options, ACL_NO_MODE, data, + SMB2_OP_QUERY_INFO, cfile, NULL, NULL, + NULL, NULL); + break; + case -EREMOTE: + break; + default: + if (hdr->Status != STATUS_OBJECT_NAME_INVALID) + break; + rc2 = cifs_inval_name_dfs_link_error(xid, tcon, cifs_sb, + full_path, &islink); + if (rc2) { + rc = rc2; goto out; - } else if (rc != -EREMOTE && hdr->Status == STATUS_OBJECT_NAME_INVALID) { - rc2 = cifs_inval_name_dfs_link_error(xid, tcon, cifs_sb, - full_path, &islink); - if (rc2) { - rc = rc2; - goto out; - } - if (islink) - rc = -EREMOTE; } + if (islink) + rc = -EREMOTE; } out: - free_rsp_buf(err_buftype[0], err_iov[0].iov_base); - free_rsp_buf(err_buftype[1], err_iov[1].iov_base); - free_rsp_buf(err_buftype[2], err_iov[2].iov_base); + free_rsp_buf(out_buftype[0], out_iov[0].iov_base); + free_rsp_buf(out_buftype[1], out_iov[1].iov_base); + free_rsp_buf(out_buftype[2], out_iov[2].iov_base); return rc; } - -int smb311_posix_query_path_info(const unsigned int xid, struct cifs_tcon *tcon, - struct cifs_sb_info *cifs_sb, const char *full_path, +int smb311_posix_query_path_info(const unsigned int xid, + struct cifs_tcon *tcon, + struct cifs_sb_info *cifs_sb, + const char *full_path, struct cifs_open_info_data *data, struct cifs_sid *owner, - struct cifs_sid *group, - bool *adjust_tz, bool *reparse) + struct cifs_sid *group) { int rc; __u32 create_options = 0; struct cifsFileInfo *cfile; - struct kvec err_iov[3] = {}; - int err_buftype[3] = {}; + struct kvec out_iov[3] = {}; + int out_buftype[3] = {}; __u8 *sidsbuf = NULL; __u8 *sidsbuf_end = NULL; size_t sidsbuflen = 0; size_t owner_len, group_len; - *adjust_tz = false; - *reparse = false; + data->adjust_tz = false; + data->reparse_point = false; /* * BB TODO: Add support for using the cached root handle. @@ -649,27 +671,33 @@ int smb311_posix_query_path_info(const unsigned int xid, struct cifs_tcon *tcon, cifs_get_readable_path(tcon, full_path, &cfile); rc = smb2_compound_op(xid, tcon, cifs_sb, full_path, FILE_READ_ATTRIBUTES, FILE_OPEN, create_options, ACL_NO_MODE, data, SMB2_OP_POSIX_QUERY_INFO, cfile, - &sidsbuf, &sidsbuflen, err_iov, err_buftype); - if (rc == -EOPNOTSUPP) { + &sidsbuf, &sidsbuflen, out_iov, out_buftype); + /* + * If first iov is unset, then SMB session was dropped or we've got a + * cached open file (@cfile). + */ + if (!out_iov[0].iov_base || out_buftype[0] == CIFS_NO_BUFFER) + goto out; + + switch (rc) { + case 0: + case -EOPNOTSUPP: /* BB TODO: When support for special files added to Samba re-verify this path */ - if (err_iov[0].iov_base && err_buftype[0] != CIFS_NO_BUFFER && - ((struct smb2_hdr *)err_iov[0].iov_base)->Command == SMB2_CREATE && - ((struct smb2_hdr *)err_iov[0].iov_base)->Status == STATUS_STOPPED_ON_SYMLINK) { - rc = smb2_parse_symlink_response(cifs_sb, err_iov, &data->symlink_target); - if (rc) - goto out; - } - *reparse = true; - create_options |= OPEN_REPARSE_POINT; + rc = parse_create_response(data, cifs_sb, &out_iov[0]); + if (rc || !data->reparse_point) + goto out; + create_options |= OPEN_REPARSE_POINT; /* Failed on a symbolic link - query a reparse point info */ cifs_get_readable_path(tcon, full_path, &cfile); rc = smb2_compound_op(xid, tcon, cifs_sb, full_path, FILE_READ_ATTRIBUTES, FILE_OPEN, create_options, ACL_NO_MODE, data, SMB2_OP_POSIX_QUERY_INFO, cfile, &sidsbuf, &sidsbuflen, NULL, NULL); + break; } +out: if (rc == 0) { sidsbuf_end = sidsbuf + sidsbuflen; @@ -689,11 +717,10 @@ int smb311_posix_query_path_info(const unsigned int xid, struct cifs_tcon *tcon, memcpy(group, sidsbuf + owner_len, group_len); } -out: kfree(sidsbuf); - free_rsp_buf(err_buftype[0], err_iov[0].iov_base); - free_rsp_buf(err_buftype[1], err_iov[1].iov_base); - free_rsp_buf(err_buftype[2], err_iov[2].iov_base); + free_rsp_buf(out_buftype[0], out_iov[0].iov_base); + free_rsp_buf(out_buftype[1], out_iov[1].iov_base); + free_rsp_buf(out_buftype[2], out_iov[2].iov_base); return rc; } diff --git a/fs/smb/client/smb2misc.c b/fs/smb/client/smb2misc.c index 3935a60db5c3..25f7cd6f23d6 100644 --- a/fs/smb/client/smb2misc.c +++ b/fs/smb/client/smb2misc.c @@ -145,7 +145,7 @@ smb2_check_message(char *buf, unsigned int len, struct TCP_Server_Info *server) __u64 mid; /* If server is a channel, select the primary channel */ - pserver = CIFS_SERVER_IS_CHAN(server) ? server->primary_server : server; + pserver = SERVER_IS_CHAN(server) ? server->primary_server : server; /* * Add function to do table lookup of StructureSize by command @@ -623,7 +623,7 @@ smb2_is_valid_lease_break(char *buffer, struct TCP_Server_Info *server) cifs_dbg(FYI, "Checking for lease break\n"); /* If server is a channel, select the primary channel */ - pserver = CIFS_SERVER_IS_CHAN(server) ? server->primary_server : server; + pserver = SERVER_IS_CHAN(server) ? server->primary_server : server; /* look up tcon based on tid & uid */ spin_lock(&cifs_tcp_ses_lock); @@ -698,7 +698,7 @@ smb2_is_valid_oplock_break(char *buffer, struct TCP_Server_Info *server) cifs_dbg(FYI, "oplock level 0x%x\n", rsp->OplockLevel); /* If server is a channel, select the primary channel */ - pserver = CIFS_SERVER_IS_CHAN(server) ? server->primary_server : server; + pserver = SERVER_IS_CHAN(server) ? server->primary_server : server; /* look up tcon based on tid & uid */ spin_lock(&cifs_tcp_ses_lock); diff --git a/fs/smb/client/smb2ops.c b/fs/smb/client/smb2ops.c index 0f62bc373ad0..e3dd698854d6 100644 --- a/fs/smb/client/smb2ops.c +++ b/fs/smb/client/smb2ops.c @@ -172,8 +172,17 @@ smb2_set_credits(struct TCP_Server_Info *server, const int val) spin_lock(&server->req_lock); server->credits = val; - if (val == 1) + if (val == 1) { server->reconnect_instance++; + /* + * ChannelSequence updated for all channels in primary channel so that consistent + * across SMB3 requests sent on any channel. See MS-SMB2 3.2.4.1 and 3.2.7.1 + */ + if (SERVER_IS_CHAN(server)) + server->primary_server->channel_sequence_num++; + else + server->channel_sequence_num++; + } scredits = server->credits; in_flight = server->in_flight; spin_unlock(&server->req_lock); @@ -1075,31 +1084,28 @@ smb2_query_eas(const unsigned int xid, struct cifs_tcon *tcon, return rc; } - static int smb2_set_ea(const unsigned int xid, struct cifs_tcon *tcon, const char *path, const char *ea_name, const void *ea_value, const __u16 ea_value_len, const struct nls_table *nls_codepage, struct cifs_sb_info *cifs_sb) { + struct smb2_compound_vars *vars; struct cifs_ses *ses = tcon->ses; struct TCP_Server_Info *server = cifs_pick_channel(ses); + struct smb_rqst *rqst; + struct kvec *rsp_iov; __le16 *utf16_path = NULL; int ea_name_len = strlen(ea_name); int flags = CIFS_CP_CREATE_CLOSE_OP; int len; - struct smb_rqst rqst[3]; int resp_buftype[3]; - struct kvec rsp_iov[3]; - struct kvec open_iov[SMB2_CREATE_IOV_SIZE]; struct cifs_open_parms oparms; __u8 oplock = SMB2_OPLOCK_LEVEL_NONE; struct cifs_fid fid; - struct kvec si_iov[SMB2_SET_INFO_IOV_SIZE]; unsigned int size[1]; void *data[1]; struct smb2_file_full_ea_info *ea = NULL; - struct kvec close_iov[1]; struct smb2_query_info_rsp *rsp; int rc, used_len = 0; @@ -1113,9 +1119,14 @@ smb2_set_ea(const unsigned int xid, struct cifs_tcon *tcon, if (!utf16_path) return -ENOMEM; - memset(rqst, 0, sizeof(rqst)); resp_buftype[0] = resp_buftype[1] = resp_buftype[2] = CIFS_NO_BUFFER; - memset(rsp_iov, 0, sizeof(rsp_iov)); + vars = kzalloc(sizeof(*vars), GFP_KERNEL); + if (!vars) { + rc = -ENOMEM; + goto out_free_path; + } + rqst = vars->rqst; + rsp_iov = vars->rsp_iov; if (ses->server->ops->query_all_EAs) { if (!ea_value) { @@ -1160,8 +1171,7 @@ smb2_set_ea(const unsigned int xid, struct cifs_tcon *tcon, } /* Open */ - memset(&open_iov, 0, sizeof(open_iov)); - rqst[0].rq_iov = open_iov; + rqst[0].rq_iov = vars->open_iov; rqst[0].rq_nvec = SMB2_CREATE_IOV_SIZE; oparms = (struct cifs_open_parms) { @@ -1181,8 +1191,7 @@ smb2_set_ea(const unsigned int xid, struct cifs_tcon *tcon, /* Set Info */ - memset(&si_iov, 0, sizeof(si_iov)); - rqst[1].rq_iov = si_iov; + rqst[1].rq_iov = vars->si_iov; rqst[1].rq_nvec = 1; len = sizeof(*ea) + ea_name_len + ea_value_len + 1; @@ -1210,10 +1219,8 @@ smb2_set_ea(const unsigned int xid, struct cifs_tcon *tcon, smb2_set_next_command(tcon, &rqst[1]); smb2_set_related(&rqst[1]); - /* Close */ - memset(&close_iov, 0, sizeof(close_iov)); - rqst[2].rq_iov = close_iov; + rqst[2].rq_iov = &vars->close_iov; rqst[2].rq_nvec = 1; rc = SMB2_close_init(tcon, server, &rqst[2], COMPOUND_FID, COMPOUND_FID, false); @@ -1228,13 +1235,15 @@ smb2_set_ea(const unsigned int xid, struct cifs_tcon *tcon, sea_exit: kfree(ea); - kfree(utf16_path); SMB2_open_free(&rqst[0]); SMB2_set_info_free(&rqst[1]); SMB2_close_free(&rqst[2]); free_rsp_buf(resp_buftype[0], rsp_iov[0].iov_base); free_rsp_buf(resp_buftype[1], rsp_iov[1].iov_base); free_rsp_buf(resp_buftype[2], rsp_iov[2].iov_base); + kfree(vars); +out_free_path: + kfree(utf16_path); return rc; } #endif @@ -1396,7 +1405,8 @@ smb2_close_getattr(const unsigned int xid, struct cifs_tcon *tcon, if (file_inf.LastWriteTime) inode->i_mtime = cifs_NTtimeToUnix(file_inf.LastWriteTime); if (file_inf.ChangeTime) - inode->i_ctime = cifs_NTtimeToUnix(file_inf.ChangeTime); + inode_set_ctime_to_ts(inode, + cifs_NTtimeToUnix(file_inf.ChangeTime)); if (file_inf.LastAccessTime) inode->i_atime = cifs_NTtimeToUnix(file_inf.LastAccessTime); @@ -1445,16 +1455,6 @@ req_res_key_exit: return rc; } -struct iqi_vars { - struct smb_rqst rqst[3]; - struct kvec rsp_iov[3]; - struct kvec open_iov[SMB2_CREATE_IOV_SIZE]; - struct kvec qi_iov[1]; - struct kvec io_iov[SMB2_IOCTL_IOV_SIZE]; - struct kvec si_iov[SMB2_SET_INFO_IOV_SIZE]; - struct kvec close_iov[1]; -}; - static int smb2_ioctl_query_info(const unsigned int xid, struct cifs_tcon *tcon, @@ -1462,7 +1462,7 @@ smb2_ioctl_query_info(const unsigned int xid, __le16 *path, int is_dir, unsigned long p) { - struct iqi_vars *vars; + struct smb2_compound_vars *vars; struct smb_rqst *rqst; struct kvec *rsp_iov; struct cifs_ses *ses = tcon->ses; @@ -1580,7 +1580,7 @@ smb2_ioctl_query_info(const unsigned int xid, rc = -EINVAL; goto free_open_req; } - rqst[1].rq_iov = &vars->si_iov[0]; + rqst[1].rq_iov = vars->si_iov; rqst[1].rq_nvec = 1; /* MS-FSCC 2.4.13 FileEndOfFileInformation */ @@ -1592,7 +1592,7 @@ smb2_ioctl_query_info(const unsigned int xid, SMB2_O_INFO_FILE, 0, data, size); free_req1_func = SMB2_set_info_free; } else if (qi.flags == PASSTHRU_QUERY_INFO) { - rqst[1].rq_iov = &vars->qi_iov[0]; + rqst[1].rq_iov = &vars->qi_iov; rqst[1].rq_nvec = 1; rc = SMB2_query_info_init(tcon, server, @@ -1614,7 +1614,7 @@ smb2_ioctl_query_info(const unsigned int xid, smb2_set_related(&rqst[1]); /* Close */ - rqst[2].rq_iov = &vars->close_iov[0]; + rqst[2].rq_iov = &vars->close_iov; rqst[2].rq_nvec = 1; rc = SMB2_close_init(tcon, server, @@ -2407,7 +2407,7 @@ smb2_is_network_name_deleted(char *buf, struct TCP_Server_Info *server) return false; /* If server is a channel, select the primary channel */ - pserver = CIFS_SERVER_IS_CHAN(server) ? server->primary_server : server; + pserver = SERVER_IS_CHAN(server) ? server->primary_server : server; spin_lock(&cifs_tcp_ses_lock); list_for_each_entry(ses, &pserver->smb_ses_list, smb_ses_list) { @@ -2523,15 +2523,13 @@ smb2_query_info_compound(const unsigned int xid, struct cifs_tcon *tcon, struct kvec *rsp, int *buftype, struct cifs_sb_info *cifs_sb) { + struct smb2_compound_vars *vars; struct cifs_ses *ses = tcon->ses; struct TCP_Server_Info *server = cifs_pick_channel(ses); int flags = CIFS_CP_CREATE_CLOSE_OP; - struct smb_rqst rqst[3]; + struct smb_rqst *rqst; int resp_buftype[3]; - struct kvec rsp_iov[3]; - struct kvec open_iov[SMB2_CREATE_IOV_SIZE]; - struct kvec qi_iov[1]; - struct kvec close_iov[1]; + struct kvec *rsp_iov; u8 oplock = SMB2_OPLOCK_LEVEL_NONE; struct cifs_open_parms oparms; struct cifs_fid fid; @@ -2548,9 +2546,14 @@ smb2_query_info_compound(const unsigned int xid, struct cifs_tcon *tcon, if (smb3_encryption_required(tcon)) flags |= CIFS_TRANSFORM_REQ; - memset(rqst, 0, sizeof(rqst)); resp_buftype[0] = resp_buftype[1] = resp_buftype[2] = CIFS_NO_BUFFER; - memset(rsp_iov, 0, sizeof(rsp_iov)); + vars = kzalloc(sizeof(*vars), GFP_KERNEL); + if (!vars) { + rc = -ENOMEM; + goto out_free_path; + } + rqst = vars->rqst; + rsp_iov = vars->rsp_iov; /* * We can only call this for things we know are directories. @@ -2559,8 +2562,7 @@ smb2_query_info_compound(const unsigned int xid, struct cifs_tcon *tcon, open_cached_dir(xid, tcon, path, cifs_sb, false, &cfid); /* cfid null if open dir failed */ - memset(&open_iov, 0, sizeof(open_iov)); - rqst[0].rq_iov = open_iov; + rqst[0].rq_iov = vars->open_iov; rqst[0].rq_nvec = SMB2_CREATE_IOV_SIZE; oparms = (struct cifs_open_parms) { @@ -2578,8 +2580,7 @@ smb2_query_info_compound(const unsigned int xid, struct cifs_tcon *tcon, goto qic_exit; smb2_set_next_command(tcon, &rqst[0]); - memset(&qi_iov, 0, sizeof(qi_iov)); - rqst[1].rq_iov = qi_iov; + rqst[1].rq_iov = &vars->qi_iov; rqst[1].rq_nvec = 1; if (cfid) { @@ -2606,8 +2607,7 @@ smb2_query_info_compound(const unsigned int xid, struct cifs_tcon *tcon, smb2_set_related(&rqst[1]); } - memset(&close_iov, 0, sizeof(close_iov)); - rqst[2].rq_iov = close_iov; + rqst[2].rq_iov = &vars->close_iov; rqst[2].rq_nvec = 1; rc = SMB2_close_init(tcon, server, @@ -2638,7 +2638,6 @@ smb2_query_info_compound(const unsigned int xid, struct cifs_tcon *tcon, *buftype = resp_buftype[1]; qic_exit: - kfree(utf16_path); SMB2_open_free(&rqst[0]); SMB2_query_info_free(&rqst[1]); SMB2_close_free(&rqst[2]); @@ -2646,6 +2645,9 @@ smb2_query_info_compound(const unsigned int xid, struct cifs_tcon *tcon, free_rsp_buf(resp_buftype[2], rsp_iov[2].iov_base); if (cfid) close_cached_dir(cfid); + kfree(vars); +out_free_path: + kfree(utf16_path); return rc; } @@ -2948,154 +2950,32 @@ parse_reparse_point(struct reparse_data_buffer *buf, } } -static int -smb2_query_symlink(const unsigned int xid, struct cifs_tcon *tcon, - struct cifs_sb_info *cifs_sb, const char *full_path, - char **target_path, bool is_reparse_point) +static int smb2_query_symlink(const unsigned int xid, + struct cifs_tcon *tcon, + struct cifs_sb_info *cifs_sb, + const char *full_path, + char **target_path, + struct kvec *rsp_iov) { - int rc; - __le16 *utf16_path = NULL; - __u8 oplock = SMB2_OPLOCK_LEVEL_NONE; - struct cifs_open_parms oparms; - struct cifs_fid fid; - struct kvec err_iov = {NULL, 0}; - struct TCP_Server_Info *server = cifs_pick_channel(tcon->ses); - int flags = CIFS_CP_CREATE_CLOSE_OP; - struct smb_rqst rqst[3]; - int resp_buftype[3]; - struct kvec rsp_iov[3]; - struct kvec open_iov[SMB2_CREATE_IOV_SIZE]; - struct kvec io_iov[SMB2_IOCTL_IOV_SIZE]; - struct kvec close_iov[1]; - struct smb2_create_rsp *create_rsp; - struct smb2_ioctl_rsp *ioctl_rsp; - struct reparse_data_buffer *reparse_buf; - int create_options = is_reparse_point ? OPEN_REPARSE_POINT : 0; - u32 plen; + struct reparse_data_buffer *buf; + struct smb2_ioctl_rsp *io = rsp_iov->iov_base; + u32 plen = le32_to_cpu(io->OutputCount); cifs_dbg(FYI, "%s: path: %s\n", __func__, full_path); - *target_path = NULL; - - if (smb3_encryption_required(tcon)) - flags |= CIFS_TRANSFORM_REQ; - - memset(rqst, 0, sizeof(rqst)); - resp_buftype[0] = resp_buftype[1] = resp_buftype[2] = CIFS_NO_BUFFER; - memset(rsp_iov, 0, sizeof(rsp_iov)); - - utf16_path = cifs_convert_path_to_utf16(full_path, cifs_sb); - if (!utf16_path) - return -ENOMEM; - - /* Open */ - memset(&open_iov, 0, sizeof(open_iov)); - rqst[0].rq_iov = open_iov; - rqst[0].rq_nvec = SMB2_CREATE_IOV_SIZE; - - oparms = (struct cifs_open_parms) { - .tcon = tcon, - .path = full_path, - .desired_access = FILE_READ_ATTRIBUTES, - .disposition = FILE_OPEN, - .create_options = cifs_create_options(cifs_sb, create_options), - .fid = &fid, - }; - - rc = SMB2_open_init(tcon, server, - &rqst[0], &oplock, &oparms, utf16_path); - if (rc) - goto querty_exit; - smb2_set_next_command(tcon, &rqst[0]); - - - /* IOCTL */ - memset(&io_iov, 0, sizeof(io_iov)); - rqst[1].rq_iov = io_iov; - rqst[1].rq_nvec = SMB2_IOCTL_IOV_SIZE; - - rc = SMB2_ioctl_init(tcon, server, - &rqst[1], fid.persistent_fid, - fid.volatile_fid, FSCTL_GET_REPARSE_POINT, NULL, 0, - CIFSMaxBufSize - - MAX_SMB2_CREATE_RESPONSE_SIZE - - MAX_SMB2_CLOSE_RESPONSE_SIZE); - if (rc) - goto querty_exit; - - smb2_set_next_command(tcon, &rqst[1]); - smb2_set_related(&rqst[1]); - - - /* Close */ - memset(&close_iov, 0, sizeof(close_iov)); - rqst[2].rq_iov = close_iov; - rqst[2].rq_nvec = 1; - - rc = SMB2_close_init(tcon, server, - &rqst[2], COMPOUND_FID, COMPOUND_FID, false); - if (rc) - goto querty_exit; - - smb2_set_related(&rqst[2]); - - rc = compound_send_recv(xid, tcon->ses, server, - flags, 3, rqst, - resp_buftype, rsp_iov); - - create_rsp = rsp_iov[0].iov_base; - if (create_rsp && create_rsp->hdr.Status) - err_iov = rsp_iov[0]; - ioctl_rsp = rsp_iov[1].iov_base; - - /* - * Open was successful and we got an ioctl response. - */ - if ((rc == 0) && (is_reparse_point)) { - /* See MS-FSCC 2.3.23 */ - - reparse_buf = (struct reparse_data_buffer *) - ((char *)ioctl_rsp + - le32_to_cpu(ioctl_rsp->OutputOffset)); - plen = le32_to_cpu(ioctl_rsp->OutputCount); - - if (plen + le32_to_cpu(ioctl_rsp->OutputOffset) > - rsp_iov[1].iov_len) { - cifs_tcon_dbg(VFS, "srv returned invalid ioctl len: %d\n", - plen); - rc = -EIO; - goto querty_exit; - } - - rc = parse_reparse_point(reparse_buf, plen, target_path, - cifs_sb); - goto querty_exit; - } - - if (!rc || !err_iov.iov_base) { - rc = -ENOENT; - goto querty_exit; - } - - rc = smb2_parse_symlink_response(cifs_sb, &err_iov, target_path); - - querty_exit: - cifs_dbg(FYI, "query symlink rc %d\n", rc); - kfree(utf16_path); - SMB2_open_free(&rqst[0]); - SMB2_ioctl_free(&rqst[1]); - SMB2_close_free(&rqst[2]); - free_rsp_buf(resp_buftype[0], rsp_iov[0].iov_base); - free_rsp_buf(resp_buftype[1], rsp_iov[1].iov_base); - free_rsp_buf(resp_buftype[2], rsp_iov[2].iov_base); - return rc; + buf = (struct reparse_data_buffer *)((u8 *)io + + le32_to_cpu(io->OutputOffset)); + return parse_reparse_point(buf, plen, target_path, cifs_sb); } -int -smb2_query_reparse_tag(const unsigned int xid, struct cifs_tcon *tcon, - struct cifs_sb_info *cifs_sb, const char *full_path, - __u32 *tag) +static int smb2_query_reparse_point(const unsigned int xid, + struct cifs_tcon *tcon, + struct cifs_sb_info *cifs_sb, + const char *full_path, + u32 *tag, struct kvec *rsp, + int *rsp_buftype) { + struct smb2_compound_vars *vars; int rc; __le16 *utf16_path = NULL; __u8 oplock = SMB2_OPLOCK_LEVEL_NONE; @@ -3103,12 +2983,9 @@ smb2_query_reparse_tag(const unsigned int xid, struct cifs_tcon *tcon, struct cifs_fid fid; struct TCP_Server_Info *server = cifs_pick_channel(tcon->ses); int flags = CIFS_CP_CREATE_CLOSE_OP; - struct smb_rqst rqst[3]; + struct smb_rqst *rqst; int resp_buftype[3]; - struct kvec rsp_iov[3]; - struct kvec open_iov[SMB2_CREATE_IOV_SIZE]; - struct kvec io_iov[SMB2_IOCTL_IOV_SIZE]; - struct kvec close_iov[1]; + struct kvec *rsp_iov; struct smb2_ioctl_rsp *ioctl_rsp; struct reparse_data_buffer *reparse_buf; u32 plen; @@ -3118,20 +2995,24 @@ smb2_query_reparse_tag(const unsigned int xid, struct cifs_tcon *tcon, if (smb3_encryption_required(tcon)) flags |= CIFS_TRANSFORM_REQ; - memset(rqst, 0, sizeof(rqst)); - resp_buftype[0] = resp_buftype[1] = resp_buftype[2] = CIFS_NO_BUFFER; - memset(rsp_iov, 0, sizeof(rsp_iov)); - utf16_path = cifs_convert_path_to_utf16(full_path, cifs_sb); if (!utf16_path) return -ENOMEM; + resp_buftype[0] = resp_buftype[1] = resp_buftype[2] = CIFS_NO_BUFFER; + vars = kzalloc(sizeof(*vars), GFP_KERNEL); + if (!vars) { + rc = -ENOMEM; + goto out_free_path; + } + rqst = vars->rqst; + rsp_iov = vars->rsp_iov; + /* * setup smb2open - TODO add optimization to call cifs_get_readable_path * to see if there is a handle already open that we can use */ - memset(&open_iov, 0, sizeof(open_iov)); - rqst[0].rq_iov = open_iov; + rqst[0].rq_iov = vars->open_iov; rqst[0].rq_nvec = SMB2_CREATE_IOV_SIZE; oparms = (struct cifs_open_parms) { @@ -3151,8 +3032,7 @@ smb2_query_reparse_tag(const unsigned int xid, struct cifs_tcon *tcon, /* IOCTL */ - memset(&io_iov, 0, sizeof(io_iov)); - rqst[1].rq_iov = io_iov; + rqst[1].rq_iov = vars->io_iov; rqst[1].rq_nvec = SMB2_IOCTL_IOV_SIZE; rc = SMB2_ioctl_init(tcon, server, @@ -3167,10 +3047,8 @@ smb2_query_reparse_tag(const unsigned int xid, struct cifs_tcon *tcon, smb2_set_next_command(tcon, &rqst[1]); smb2_set_related(&rqst[1]); - /* Close */ - memset(&close_iov, 0, sizeof(close_iov)); - rqst[2].rq_iov = close_iov; + rqst[2].rq_iov = &vars->close_iov; rqst[2].rq_nvec = 1; rc = SMB2_close_init(tcon, server, @@ -3205,16 +3083,21 @@ smb2_query_reparse_tag(const unsigned int xid, struct cifs_tcon *tcon, goto query_rp_exit; } *tag = le32_to_cpu(reparse_buf->ReparseTag); + *rsp = rsp_iov[1]; + *rsp_buftype = resp_buftype[1]; + resp_buftype[1] = CIFS_NO_BUFFER; } query_rp_exit: - kfree(utf16_path); SMB2_open_free(&rqst[0]); SMB2_ioctl_free(&rqst[1]); SMB2_close_free(&rqst[2]); free_rsp_buf(resp_buftype[0], rsp_iov[0].iov_base); free_rsp_buf(resp_buftype[1], rsp_iov[1].iov_base); free_rsp_buf(resp_buftype[2], rsp_iov[2].iov_base); + kfree(vars); +out_free_path: + kfree(utf16_path); return rc; } @@ -4400,7 +4283,7 @@ smb2_get_enc_key(struct TCP_Server_Info *server, __u64 ses_id, int enc, u8 *key) u8 *ses_enc_key; /* If server is a channel, select the primary channel */ - pserver = CIFS_SERVER_IS_CHAN(server) ? server->primary_server : server; + pserver = SERVER_IS_CHAN(server) ? server->primary_server : server; spin_lock(&cifs_tcp_ses_lock); list_for_each_entry(ses, &pserver->smb_ses_list, smb_ses_list) { @@ -5298,6 +5181,7 @@ struct smb_version_operations smb20_operations = { .can_echo = smb2_can_echo, .echo = SMB2_echo, .query_path_info = smb2_query_path_info, + .query_reparse_point = smb2_query_reparse_point, .get_srv_inum = smb2_get_srv_inum, .query_file_info = smb2_query_file_info, .set_path_size = smb2_set_path_size, @@ -5399,6 +5283,7 @@ struct smb_version_operations smb21_operations = { .can_echo = smb2_can_echo, .echo = SMB2_echo, .query_path_info = smb2_query_path_info, + .query_reparse_point = smb2_query_reparse_point, .get_srv_inum = smb2_get_srv_inum, .query_file_info = smb2_query_file_info, .set_path_size = smb2_set_path_size, @@ -5503,7 +5388,7 @@ struct smb_version_operations smb30_operations = { .echo = SMB2_echo, .query_path_info = smb2_query_path_info, /* WSL tags introduced long after smb2.1, enable for SMB3, 3.11 only */ - .query_reparse_tag = smb2_query_reparse_tag, + .query_reparse_point = smb2_query_reparse_point, .get_srv_inum = smb2_get_srv_inum, .query_file_info = smb2_query_file_info, .set_path_size = smb2_set_path_size, @@ -5616,7 +5501,7 @@ struct smb_version_operations smb311_operations = { .can_echo = smb2_can_echo, .echo = SMB2_echo, .query_path_info = smb2_query_path_info, - .query_reparse_tag = smb2_query_reparse_tag, + .query_reparse_point = smb2_query_reparse_point, .get_srv_inum = smb2_get_srv_inum, .query_file_info = smb2_query_file_info, .set_path_size = smb2_set_path_size, diff --git a/fs/smb/client/smb2pdu.c b/fs/smb/client/smb2pdu.c index a457f07f820d..092b0087c9dc 100644 --- a/fs/smb/client/smb2pdu.c +++ b/fs/smb/client/smb2pdu.c @@ -88,9 +88,20 @@ smb2_hdr_assemble(struct smb2_hdr *shdr, __le16 smb2_cmd, const struct cifs_tcon *tcon, struct TCP_Server_Info *server) { + struct smb3_hdr_req *smb3_hdr; shdr->ProtocolId = SMB2_PROTO_NUMBER; shdr->StructureSize = cpu_to_le16(64); shdr->Command = smb2_cmd; + if (server->dialect >= SMB30_PROT_ID) { + /* After reconnect SMB3 must set ChannelSequence on subsequent reqs */ + smb3_hdr = (struct smb3_hdr_req *)shdr; + /* if primary channel is not set yet, use default channel for chan sequence num */ + if (SERVER_IS_CHAN(server)) + smb3_hdr->ChannelSequence = + cpu_to_le16(server->primary_server->channel_sequence_num); + else + smb3_hdr->ChannelSequence = cpu_to_le16(server->channel_sequence_num); + } if (server) { spin_lock(&server->req_lock); /* Request up to 10 credits but don't go over the limit. */ @@ -553,7 +564,7 @@ assemble_neg_contexts(struct smb2_negotiate_req *req, * secondary channels don't have the hostname field populated * use the hostname field in the primary channel instead */ - pserver = CIFS_SERVER_IS_CHAN(server) ? server->primary_server : server; + pserver = SERVER_IS_CHAN(server) ? server->primary_server : server; cifs_server_lock(pserver); hostname = pserver->hostname; if (hostname && (hostname[0] != 0)) { @@ -2570,8 +2581,8 @@ alloc_path_with_tree_prefix(__le16 **out_path, int *out_size, int *out_len, /* Do not append the separator if the path is empty */ if (path[0] != cpu_to_le16(0x0000)) { - UniStrcat(*out_path, sep); - UniStrcat(*out_path, path); + UniStrcat((wchar_t *)*out_path, (wchar_t *)sep); + UniStrcat((wchar_t *)*out_path, (wchar_t *)path); } unload_nls(cp); @@ -3785,7 +3796,7 @@ void smb2_reconnect_server(struct work_struct *work) bool resched = false; /* If server is a channel, select the primary channel */ - pserver = CIFS_SERVER_IS_CHAN(server) ? server->primary_server : server; + pserver = SERVER_IS_CHAN(server) ? server->primary_server : server; /* Prevent simultaneous reconnects that can corrupt tcon->rlist list */ mutex_lock(&pserver->reconnect_mutex); diff --git a/fs/smb/client/smb2proto.h b/fs/smb/client/smb2proto.h index d5d7ffb7711c..46eff9ec302a 100644 --- a/fs/smb/client/smb2proto.h +++ b/fs/smb/client/smb2proto.h @@ -56,9 +56,11 @@ extern int smb3_handle_read_data(struct TCP_Server_Info *server, extern int smb2_query_reparse_tag(const unsigned int xid, struct cifs_tcon *tcon, struct cifs_sb_info *cifs_sb, const char *path, __u32 *reparse_tag); -int smb2_query_path_info(const unsigned int xid, struct cifs_tcon *tcon, - struct cifs_sb_info *cifs_sb, const char *full_path, - struct cifs_open_info_data *data, bool *adjust_tz, bool *reparse); +int smb2_query_path_info(const unsigned int xid, + struct cifs_tcon *tcon, + struct cifs_sb_info *cifs_sb, + const char *full_path, + struct cifs_open_info_data *data); extern int smb2_set_path_size(const unsigned int xid, struct cifs_tcon *tcon, const char *full_path, __u64 size, struct cifs_sb_info *cifs_sb, bool set_alloc); @@ -275,12 +277,13 @@ extern int smb2_query_info_compound(const unsigned int xid, struct kvec *rsp, int *buftype, struct cifs_sb_info *cifs_sb); /* query path info from the server using SMB311 POSIX extensions*/ -int smb311_posix_query_path_info(const unsigned int xid, struct cifs_tcon *tcon, - struct cifs_sb_info *cifs_sb, const char *full_path, +int smb311_posix_query_path_info(const unsigned int xid, + struct cifs_tcon *tcon, + struct cifs_sb_info *cifs_sb, + const char *full_path, struct cifs_open_info_data *data, struct cifs_sid *owner, - struct cifs_sid *group, - bool *adjust_tz, bool *reparse); + struct cifs_sid *group); int posix_info_parse(const void *beg, const void *end, struct smb2_posix_info_parsed *out); int posix_info_sid_size(const void *beg, const void *end); diff --git a/fs/smb/client/smb2transport.c b/fs/smb/client/smb2transport.c index 7676091b3e77..23c50ed7d4b5 100644 --- a/fs/smb/client/smb2transport.c +++ b/fs/smb/client/smb2transport.c @@ -86,7 +86,7 @@ int smb2_get_sign_key(__u64 ses_id, struct TCP_Server_Info *server, u8 *key) spin_lock(&cifs_tcp_ses_lock); /* If server is a channel, select the primary channel */ - pserver = CIFS_SERVER_IS_CHAN(server) ? server->primary_server : server; + pserver = SERVER_IS_CHAN(server) ? server->primary_server : server; list_for_each_entry(ses, &pserver->smb_ses_list, smb_ses_list) { if (ses->Suid == ses_id) @@ -149,7 +149,7 @@ smb2_find_smb_ses_unlocked(struct TCP_Server_Info *server, __u64 ses_id) struct cifs_ses *ses; /* If server is a channel, select the primary channel */ - pserver = CIFS_SERVER_IS_CHAN(server) ? server->primary_server : server; + pserver = SERVER_IS_CHAN(server) ? server->primary_server : server; list_for_each_entry(ses, &pserver->smb_ses_list, smb_ses_list) { if (ses->Suid != ses_id) diff --git a/fs/smb/client/transport.c b/fs/smb/client/transport.c index f280502a2aee..1b5d9794ed5b 100644 --- a/fs/smb/client/transport.c +++ b/fs/smb/client/transport.c @@ -416,13 +416,19 @@ out: return rc; } +struct send_req_vars { + struct smb2_transform_hdr tr_hdr; + struct smb_rqst rqst[MAX_COMPOUND]; + struct kvec iov; +}; + static int smb_send_rqst(struct TCP_Server_Info *server, int num_rqst, struct smb_rqst *rqst, int flags) { - struct kvec iov; - struct smb2_transform_hdr *tr_hdr; - struct smb_rqst cur_rqst[MAX_COMPOUND]; + struct send_req_vars *vars; + struct smb_rqst *cur_rqst; + struct kvec *iov; int rc; if (!(flags & CIFS_TRANSFORM_REQ)) @@ -436,16 +442,15 @@ smb_send_rqst(struct TCP_Server_Info *server, int num_rqst, return -EIO; } - tr_hdr = kzalloc(sizeof(*tr_hdr), GFP_NOFS); - if (!tr_hdr) + vars = kzalloc(sizeof(*vars), GFP_NOFS); + if (!vars) return -ENOMEM; + cur_rqst = vars->rqst; + iov = &vars->iov; - memset(&cur_rqst[0], 0, sizeof(cur_rqst)); - memset(&iov, 0, sizeof(iov)); - - iov.iov_base = tr_hdr; - iov.iov_len = sizeof(*tr_hdr); - cur_rqst[0].rq_iov = &iov; + iov->iov_base = &vars->tr_hdr; + iov->iov_len = sizeof(vars->tr_hdr); + cur_rqst[0].rq_iov = iov; cur_rqst[0].rq_nvec = 1; rc = server->ops->init_transform_rq(server, num_rqst + 1, @@ -456,7 +461,7 @@ smb_send_rqst(struct TCP_Server_Info *server, int num_rqst, rc = __smb_send_rqst(server, num_rqst + 1, &cur_rqst[0]); smb3_free_compound_rqst(num_rqst, &cur_rqst[1]); out: - kfree(tr_hdr); + kfree(vars); return rc; } diff --git a/fs/smb/common/smb2pdu.h b/fs/smb/common/smb2pdu.h index bae590eec871..2680251b9aac 100644 --- a/fs/smb/common/smb2pdu.h +++ b/fs/smb/common/smb2pdu.h @@ -153,6 +153,28 @@ struct smb2_hdr { __u8 Signature[16]; } __packed; +struct smb3_hdr_req { + __le32 ProtocolId; /* 0xFE 'S' 'M' 'B' */ + __le16 StructureSize; /* 64 */ + __le16 CreditCharge; /* MBZ */ + __le16 ChannelSequence; /* See MS-SMB2 3.2.4.1 and 3.2.7.1 */ + __le16 Reserved; + __le16 Command; + __le16 CreditRequest; /* CreditResponse */ + __le32 Flags; + __le32 NextCommand; + __le64 MessageId; + union { + struct { + __le32 ProcessId; + __le32 TreeId; + } __packed SyncId; + __le64 AsyncId; + } __packed Id; + __le64 SessionId; + __u8 Signature[16]; +} __packed; + struct smb2_pdu { struct smb2_hdr hdr; __le16 StructureSize2; /* size of wct area (varies, request specific) */ diff --git a/fs/smb/server/Kconfig b/fs/smb/server/Kconfig index 7055cb5d2880..793151ddd60e 100644 --- a/fs/smb/server/Kconfig +++ b/fs/smb/server/Kconfig @@ -5,6 +5,7 @@ config SMB_SERVER depends on FILE_LOCKING select NLS select NLS_UTF8 + select NLS_UCS2_UTILS select CRYPTO select CRYPTO_MD5 select CRYPTO_HMAC diff --git a/fs/smb/server/asn1.c b/fs/smb/server/asn1.c index cc6384f79675..4a4b2b03ff33 100644 --- a/fs/smb/server/asn1.c +++ b/fs/smb/server/asn1.c @@ -214,12 +214,10 @@ static int ksmbd_neg_token_alloc(void *context, size_t hdrlen, { struct ksmbd_conn *conn = context; - conn->mechToken = kmalloc(vlen + 1, GFP_KERNEL); + conn->mechToken = kmemdup_nul(value, vlen, GFP_KERNEL); if (!conn->mechToken) return -ENOMEM; - memcpy(conn->mechToken, value, vlen); - conn->mechToken[vlen] = '\0'; return 0; } diff --git a/fs/smb/server/auth.c b/fs/smb/server/auth.c index 5e5e120edcc2..229a6527870d 100644 --- a/fs/smb/server/auth.c +++ b/fs/smb/server/auth.c @@ -355,6 +355,9 @@ int ksmbd_decode_ntlmssp_auth_blob(struct authenticate_message *authblob, if (blob_len < (u64)sess_key_off + sess_key_len) return -EINVAL; + if (sess_key_len > CIFS_KEY_SIZE) + return -EINVAL; + ctx_arc4 = kmalloc(sizeof(*ctx_arc4), GFP_KERNEL); if (!ctx_arc4) return -ENOMEM; @@ -1029,11 +1032,15 @@ static struct scatterlist *ksmbd_init_sg(struct kvec *iov, unsigned int nvec, { struct scatterlist *sg; unsigned int assoc_data_len = sizeof(struct smb2_transform_hdr) - 20; - int i, nr_entries[3] = {0}, total_entries = 0, sg_idx = 0; + int i, *nr_entries, total_entries = 0, sg_idx = 0; if (!nvec) return NULL; + nr_entries = kcalloc(nvec, sizeof(int), GFP_KERNEL); + if (!nr_entries) + return NULL; + for (i = 0; i < nvec - 1; i++) { unsigned long kaddr = (unsigned long)iov[i + 1].iov_base; @@ -1051,8 +1058,10 @@ static struct scatterlist *ksmbd_init_sg(struct kvec *iov, unsigned int nvec, total_entries += 2; sg = kmalloc_array(total_entries, sizeof(struct scatterlist), GFP_KERNEL); - if (!sg) + if (!sg) { + kfree(nr_entries); return NULL; + } sg_init_table(sg, total_entries); smb2_sg_set_buf(&sg[sg_idx++], iov[0].iov_base + 24, assoc_data_len); @@ -1086,6 +1095,7 @@ static struct scatterlist *ksmbd_init_sg(struct kvec *iov, unsigned int nvec, } } smb2_sg_set_buf(&sg[sg_idx], sign, SMB2_SIGNATURE_SIZE); + kfree(nr_entries); return sg; } diff --git a/fs/smb/server/connection.c b/fs/smb/server/connection.c index 2a717d158f02..0d990c2f33cd 100644 --- a/fs/smb/server/connection.c +++ b/fs/smb/server/connection.c @@ -123,28 +123,22 @@ void ksmbd_conn_enqueue_request(struct ksmbd_work *work) } } -int ksmbd_conn_try_dequeue_request(struct ksmbd_work *work) +void ksmbd_conn_try_dequeue_request(struct ksmbd_work *work) { struct ksmbd_conn *conn = work->conn; - int ret = 1; if (list_empty(&work->request_entry) && list_empty(&work->async_request_entry)) - return 0; + return; - if (!work->multiRsp) - atomic_dec(&conn->req_running); - if (!work->multiRsp) { - spin_lock(&conn->request_lock); - list_del_init(&work->request_entry); - spin_unlock(&conn->request_lock); - if (work->asynchronous) - release_async_work(work); - ret = 0; - } + atomic_dec(&conn->req_running); + spin_lock(&conn->request_lock); + list_del_init(&work->request_entry); + spin_unlock(&conn->request_lock); + if (work->asynchronous) + release_async_work(work); wake_up_all(&conn->req_running_q); - return ret; } void ksmbd_conn_lock(struct ksmbd_conn *conn) @@ -193,41 +187,22 @@ void ksmbd_conn_wait_idle(struct ksmbd_conn *conn, u64 sess_id) int ksmbd_conn_write(struct ksmbd_work *work) { struct ksmbd_conn *conn = work->conn; - size_t len = 0; int sent; - struct kvec iov[3]; - int iov_idx = 0; if (!work->response_buf) { pr_err("NULL response header\n"); return -EINVAL; } - if (work->tr_buf) { - iov[iov_idx] = (struct kvec) { work->tr_buf, - sizeof(struct smb2_transform_hdr) + 4 }; - len += iov[iov_idx++].iov_len; - } - - if (work->aux_payload_sz) { - iov[iov_idx] = (struct kvec) { work->response_buf, work->resp_hdr_sz }; - len += iov[iov_idx++].iov_len; - iov[iov_idx] = (struct kvec) { work->aux_payload_buf, work->aux_payload_sz }; - len += iov[iov_idx++].iov_len; - } else { - if (work->tr_buf) - iov[iov_idx].iov_len = work->resp_hdr_sz; - else - iov[iov_idx].iov_len = get_rfc1002_len(work->response_buf) + 4; - iov[iov_idx].iov_base = work->response_buf; - len += iov[iov_idx++].iov_len; - } + if (work->send_no_response) + return 0; ksmbd_conn_lock(conn); - sent = conn->transport->ops->writev(conn->transport, &iov[0], - iov_idx, len, - work->need_invalidate_rkey, - work->remote_key); + sent = conn->transport->ops->writev(conn->transport, work->iov, + work->iov_cnt, + get_rfc1002_len(work->iov[0].iov_base) + 4, + work->need_invalidate_rkey, + work->remote_key); ksmbd_conn_unlock(conn); if (sent < 0) { diff --git a/fs/smb/server/connection.h b/fs/smb/server/connection.h index ad8dfaa48ffb..ab2583f030ce 100644 --- a/fs/smb/server/connection.h +++ b/fs/smb/server/connection.h @@ -158,7 +158,7 @@ int ksmbd_conn_rdma_write(struct ksmbd_conn *conn, struct smb2_buffer_desc_v1 *desc, unsigned int desc_len); void ksmbd_conn_enqueue_request(struct ksmbd_work *work); -int ksmbd_conn_try_dequeue_request(struct ksmbd_work *work); +void ksmbd_conn_try_dequeue_request(struct ksmbd_work *work); void ksmbd_conn_init_server_callbacks(struct ksmbd_conn_ops *ops); int ksmbd_conn_handler_loop(void *p); int ksmbd_conn_transport_init(void); diff --git a/fs/smb/server/ksmbd_work.c b/fs/smb/server/ksmbd_work.c index 14b9caebf7a4..51def3ca74c0 100644 --- a/fs/smb/server/ksmbd_work.c +++ b/fs/smb/server/ksmbd_work.c @@ -27,18 +27,35 @@ struct ksmbd_work *ksmbd_alloc_work_struct(void) INIT_LIST_HEAD(&work->async_request_entry); INIT_LIST_HEAD(&work->fp_entry); INIT_LIST_HEAD(&work->interim_entry); + INIT_LIST_HEAD(&work->aux_read_list); + work->iov_alloc_cnt = 4; + work->iov = kcalloc(work->iov_alloc_cnt, sizeof(struct kvec), + GFP_KERNEL); + if (!work->iov) { + kmem_cache_free(work_cache, work); + work = NULL; + } } return work; } void ksmbd_free_work_struct(struct ksmbd_work *work) { + struct aux_read *ar, *tmp; + WARN_ON(work->saved_cred != NULL); kvfree(work->response_buf); - kvfree(work->aux_payload_buf); + + list_for_each_entry_safe(ar, tmp, &work->aux_read_list, entry) { + kvfree(ar->buf); + list_del(&ar->entry); + kfree(ar); + } + kfree(work->tr_buf); kvfree(work->request_buf); + kfree(work->iov); if (work->async_id) ksmbd_release_id(&work->conn->async_ida, work->async_id); kmem_cache_free(work_cache, work); @@ -77,3 +94,77 @@ bool ksmbd_queue_work(struct ksmbd_work *work) { return queue_work(ksmbd_wq, &work->work); } + +static int ksmbd_realloc_iov_pin(struct ksmbd_work *work, void *ib, + unsigned int ib_len) +{ + + if (work->iov_alloc_cnt <= work->iov_cnt) { + struct kvec *new; + + work->iov_alloc_cnt += 4; + new = krealloc(work->iov, + sizeof(struct kvec) * work->iov_alloc_cnt, + GFP_KERNEL | __GFP_ZERO); + if (!new) + return -ENOMEM; + work->iov = new; + } + + work->iov[++work->iov_idx].iov_base = ib; + work->iov[work->iov_idx].iov_len = ib_len; + work->iov_cnt++; + + return 0; +} + +static int __ksmbd_iov_pin_rsp(struct ksmbd_work *work, void *ib, int len, + void *aux_buf, unsigned int aux_size) +{ + /* Plus rfc_length size on first iov */ + if (!work->iov_idx) { + work->iov[work->iov_idx].iov_base = work->response_buf; + *(__be32 *)work->iov[0].iov_base = 0; + work->iov[work->iov_idx].iov_len = 4; + work->iov_cnt++; + } + + ksmbd_realloc_iov_pin(work, ib, len); + inc_rfc1001_len(work->iov[0].iov_base, len); + + if (aux_size) { + struct aux_read *ar; + + ksmbd_realloc_iov_pin(work, aux_buf, aux_size); + inc_rfc1001_len(work->iov[0].iov_base, aux_size); + + ar = kmalloc(sizeof(struct aux_read), GFP_KERNEL); + if (!ar) + return -ENOMEM; + + ar->buf = aux_buf; + list_add(&ar->entry, &work->aux_read_list); + } + + return 0; +} + +int ksmbd_iov_pin_rsp(struct ksmbd_work *work, void *ib, int len) +{ + return __ksmbd_iov_pin_rsp(work, ib, len, NULL, 0); +} + +int ksmbd_iov_pin_rsp_read(struct ksmbd_work *work, void *ib, int len, + void *aux_buf, unsigned int aux_size) +{ + return __ksmbd_iov_pin_rsp(work, ib, len, aux_buf, aux_size); +} + +int allocate_interim_rsp_buf(struct ksmbd_work *work) +{ + work->response_buf = kzalloc(MAX_CIFS_SMALL_BUFFER_SIZE, GFP_KERNEL); + if (!work->response_buf) + return -ENOMEM; + work->response_sz = MAX_CIFS_SMALL_BUFFER_SIZE; + return 0; +} diff --git a/fs/smb/server/ksmbd_work.h b/fs/smb/server/ksmbd_work.h index f8ae6144c0ae..8ca2c813246e 100644 --- a/fs/smb/server/ksmbd_work.h +++ b/fs/smb/server/ksmbd_work.h @@ -19,6 +19,11 @@ enum { KSMBD_WORK_CLOSED, }; +struct aux_read { + void *buf; + struct list_head entry; +}; + /* one of these for every pending CIFS request at the connection */ struct ksmbd_work { /* Server corresponding to this mid */ @@ -31,13 +36,19 @@ struct ksmbd_work { /* Response buffer */ void *response_buf; - /* Read data buffer */ - void *aux_payload_buf; + struct list_head aux_read_list; + + struct kvec *iov; + int iov_alloc_cnt; + int iov_cnt; + int iov_idx; /* Next cmd hdr in compound req buf*/ int next_smb2_rcv_hdr_off; /* Next cmd hdr in compound rsp buf*/ int next_smb2_rsp_hdr_off; + /* Current cmd hdr in compound rsp buf*/ + int curr_smb2_rsp_hdr_off; /* * Current Local FID assigned compound response if SMB2 CREATE @@ -53,16 +64,11 @@ struct ksmbd_work { unsigned int credits_granted; /* response smb header size */ - unsigned int resp_hdr_sz; unsigned int response_sz; - /* Read data count */ - unsigned int aux_payload_sz; void *tr_buf; unsigned char state; - /* Multiple responses for one request e.g. SMB ECHO */ - bool multiRsp:1; /* No response for cancelled request */ bool send_no_response:1; /* Request is encrypted */ @@ -96,6 +102,15 @@ static inline void *ksmbd_resp_buf_next(struct ksmbd_work *work) } /** + * ksmbd_resp_buf_curr - Get current buffer on compound response. + * @work: smb work containing response buffer + */ +static inline void *ksmbd_resp_buf_curr(struct ksmbd_work *work) +{ + return work->response_buf + work->curr_smb2_rsp_hdr_off + 4; +} + +/** * ksmbd_req_buf_next - Get next buffer on compound request. * @work: smb work containing response buffer */ @@ -113,5 +128,8 @@ int ksmbd_work_pool_init(void); int ksmbd_workqueue_init(void); void ksmbd_workqueue_destroy(void); bool ksmbd_queue_work(struct ksmbd_work *work); - +int ksmbd_iov_pin_rsp_read(struct ksmbd_work *work, void *ib, int len, + void *aux_buf, unsigned int aux_size); +int ksmbd_iov_pin_rsp(struct ksmbd_work *work, void *ib, int len); +int allocate_interim_rsp_buf(struct ksmbd_work *work); #endif /* __KSMBD_WORK_H__ */ diff --git a/fs/smb/server/mgmt/share_config.h b/fs/smb/server/mgmt/share_config.h index 3fd338293942..5f591751b923 100644 --- a/fs/smb/server/mgmt/share_config.h +++ b/fs/smb/server/mgmt/share_config.h @@ -34,29 +34,22 @@ struct ksmbd_share_config { #define KSMBD_SHARE_INVALID_UID ((__u16)-1) #define KSMBD_SHARE_INVALID_GID ((__u16)-1) -static inline int share_config_create_mode(struct ksmbd_share_config *share, - umode_t posix_mode) +static inline umode_t +share_config_create_mode(struct ksmbd_share_config *share, + umode_t posix_mode) { - if (!share->force_create_mode) { - if (!posix_mode) - return share->create_mask; - else - return posix_mode & share->create_mask; - } - return share->force_create_mode & share->create_mask; + umode_t mode = (posix_mode ?: (umode_t)-1) & share->create_mask; + + return mode | share->force_create_mode; } -static inline int share_config_directory_mode(struct ksmbd_share_config *share, - umode_t posix_mode) +static inline umode_t +share_config_directory_mode(struct ksmbd_share_config *share, + umode_t posix_mode) { - if (!share->force_directory_mode) { - if (!posix_mode) - return share->directory_mask; - else - return posix_mode & share->directory_mask; - } + umode_t mode = (posix_mode ?: (umode_t)-1) & share->directory_mask; - return share->force_directory_mode & share->directory_mask; + return mode | share->force_directory_mode; } static inline int test_share_config_flag(struct ksmbd_share_config *share, diff --git a/fs/smb/server/oplock.c b/fs/smb/server/oplock.c index 844b303baf29..9bc0103720f5 100644 --- a/fs/smb/server/oplock.c +++ b/fs/smb/server/oplock.c @@ -616,15 +616,6 @@ static int oplock_break_pending(struct oplock_info *opinfo, int req_op_level) return 0; } -static inline int allocate_oplock_break_buf(struct ksmbd_work *work) -{ - work->response_buf = kzalloc(MAX_CIFS_SMALL_BUFFER_SIZE, GFP_KERNEL); - if (!work->response_buf) - return -ENOMEM; - work->response_sz = MAX_CIFS_SMALL_BUFFER_SIZE; - return 0; -} - /** * __smb2_oplock_break_noti() - send smb2 oplock break cmd from conn * to client @@ -639,7 +630,6 @@ static void __smb2_oplock_break_noti(struct work_struct *wk) { struct smb2_oplock_break *rsp = NULL; struct ksmbd_work *work = container_of(wk, struct ksmbd_work, work); - struct ksmbd_conn *conn = work->conn; struct oplock_break_info *br_info = work->request_buf; struct smb2_hdr *rsp_hdr; struct ksmbd_file *fp; @@ -648,7 +638,7 @@ static void __smb2_oplock_break_noti(struct work_struct *wk) if (!fp) goto out; - if (allocate_oplock_break_buf(work)) { + if (allocate_interim_rsp_buf(work)) { pr_err("smb2_allocate_rsp_buf failed! "); ksmbd_fd_put(work, fp); goto out; @@ -656,8 +646,6 @@ static void __smb2_oplock_break_noti(struct work_struct *wk) rsp_hdr = smb2_get_msg(work->response_buf); memset(rsp_hdr, 0, sizeof(struct smb2_hdr) + 2); - *(__be32 *)work->response_buf = - cpu_to_be32(conn->vals->header_size); rsp_hdr->ProtocolId = SMB2_PROTO_NUMBER; rsp_hdr->StructureSize = SMB2_HEADER_STRUCTURE_SIZE; rsp_hdr->CreditRequest = cpu_to_le16(0); @@ -684,13 +672,15 @@ static void __smb2_oplock_break_noti(struct work_struct *wk) rsp->PersistentFid = fp->persistent_id; rsp->VolatileFid = fp->volatile_id; - inc_rfc1001_len(work->response_buf, 24); + ksmbd_fd_put(work, fp); + if (ksmbd_iov_pin_rsp(work, (void *)rsp, + sizeof(struct smb2_oplock_break))) + goto out; ksmbd_debug(OPLOCK, "sending oplock break v_id %llu p_id = %llu lock level = %d\n", rsp->VolatileFid, rsp->PersistentFid, rsp->OplockLevel); - ksmbd_fd_put(work, fp); ksmbd_conn_write(work); out: @@ -751,18 +741,15 @@ static void __smb2_lease_break_noti(struct work_struct *wk) struct smb2_lease_break *rsp = NULL; struct ksmbd_work *work = container_of(wk, struct ksmbd_work, work); struct lease_break_info *br_info = work->request_buf; - struct ksmbd_conn *conn = work->conn; struct smb2_hdr *rsp_hdr; - if (allocate_oplock_break_buf(work)) { + if (allocate_interim_rsp_buf(work)) { ksmbd_debug(OPLOCK, "smb2_allocate_rsp_buf failed! "); goto out; } rsp_hdr = smb2_get_msg(work->response_buf); memset(rsp_hdr, 0, sizeof(struct smb2_hdr) + 2); - *(__be32 *)work->response_buf = - cpu_to_be32(conn->vals->header_size); rsp_hdr->ProtocolId = SMB2_PROTO_NUMBER; rsp_hdr->StructureSize = SMB2_HEADER_STRUCTURE_SIZE; rsp_hdr->CreditRequest = cpu_to_le16(0); @@ -791,7 +778,9 @@ static void __smb2_lease_break_noti(struct work_struct *wk) rsp->AccessMaskHint = 0; rsp->ShareMaskHint = 0; - inc_rfc1001_len(work->response_buf, 44); + if (ksmbd_iov_pin_rsp(work, (void *)rsp, + sizeof(struct smb2_lease_break))) + goto out; ksmbd_conn_write(work); @@ -1492,7 +1481,7 @@ struct create_context *smb2_find_context_vals(void *open_req, const char *tag, i name_len < 4 || name_off + name_len > cc_len || (value_off & 0x7) != 0 || - (value_off && (value_off < name_off + name_len)) || + (value_len && value_off < name_off + (name_len < 8 ? 8 : name_len)) || ((u64)value_off + value_len > cc_len)) return ERR_PTR(-EINVAL); diff --git a/fs/smb/server/server.c b/fs/smb/server/server.c index 9df121bdf349..801cd0929209 100644 --- a/fs/smb/server/server.c +++ b/fs/smb/server/server.c @@ -163,6 +163,7 @@ static void __handle_ksmbd_work(struct ksmbd_work *work, { u16 command = 0; int rc; + bool is_chained = false; if (conn->ops->allocate_rsp_buf(work)) return; @@ -229,14 +230,13 @@ static void __handle_ksmbd_work(struct ksmbd_work *work, } } + is_chained = is_chained_smb2_message(work); + if (work->sess && (work->sess->sign || smb3_11_final_sess_setup_resp(work) || conn->ops->is_sign_req(work, command))) conn->ops->set_sign_rsp(work); - } while (is_chained_smb2_message(work)); - - if (work->send_no_response) - return; + } while (is_chained == true); send: smb3_preauth_hash_rsp(work); diff --git a/fs/smb/server/smb2misc.c b/fs/smb/server/smb2misc.c index 33b7e6c4ceff..e881df1d10cb 100644 --- a/fs/smb/server/smb2misc.c +++ b/fs/smb/server/smb2misc.c @@ -380,13 +380,13 @@ int ksmbd_smb2_check_message(struct ksmbd_work *work) } if (smb2_req_struct_sizes[command] != pdu->StructureSize2) { - if (command == SMB2_OPLOCK_BREAK_HE && - le16_to_cpu(pdu->StructureSize2) != OP_BREAK_STRUCT_SIZE_20 && - le16_to_cpu(pdu->StructureSize2) != OP_BREAK_STRUCT_SIZE_21) { + if (!(command == SMB2_OPLOCK_BREAK_HE && + (le16_to_cpu(pdu->StructureSize2) == OP_BREAK_STRUCT_SIZE_20 || + le16_to_cpu(pdu->StructureSize2) == OP_BREAK_STRUCT_SIZE_21))) { /* special case for SMB2.1 lease break message */ ksmbd_debug(SMB, - "Illegal request size %d for oplock break\n", - le16_to_cpu(pdu->StructureSize2)); + "Illegal request size %u for command %d\n", + le16_to_cpu(pdu->StructureSize2), command); return 1; } } diff --git a/fs/smb/server/smb2pdu.c b/fs/smb/server/smb2pdu.c index 9849d7489345..749660110878 100644 --- a/fs/smb/server/smb2pdu.c +++ b/fs/smb/server/smb2pdu.c @@ -145,12 +145,18 @@ void smb2_set_err_rsp(struct ksmbd_work *work) err_rsp = smb2_get_msg(work->response_buf); if (err_rsp->hdr.Status != STATUS_STOPPED_ON_SYMLINK) { + int err; + err_rsp->StructureSize = SMB2_ERROR_STRUCTURE_SIZE2_LE; err_rsp->ErrorContextCount = 0; err_rsp->Reserved = 0; err_rsp->ByteCount = 0; err_rsp->ErrorData[0] = 0; - inc_rfc1001_len(work->response_buf, SMB2_ERROR_STRUCTURE_SIZE2); + err = ksmbd_iov_pin_rsp(work, (void *)err_rsp, + __SMB2_HEADER_STRUCTURE_SIZE + + SMB2_ERROR_STRUCTURE_SIZE2); + if (err) + work->send_no_response = 1; } } @@ -245,9 +251,7 @@ int init_smb2_neg_rsp(struct ksmbd_work *work) struct smb2_hdr *rsp_hdr; struct smb2_negotiate_rsp *rsp; struct ksmbd_conn *conn = work->conn; - - *(__be32 *)work->response_buf = - cpu_to_be32(conn->vals->header_size); + int err; rsp_hdr = smb2_get_msg(work->response_buf); memset(rsp_hdr, 0, sizeof(struct smb2_hdr) + 2); @@ -286,12 +290,13 @@ int init_smb2_neg_rsp(struct ksmbd_work *work) rsp->SecurityBufferLength = cpu_to_le16(AUTH_GSS_LENGTH); ksmbd_copy_gss_neg_header((char *)(&rsp->hdr) + le16_to_cpu(rsp->SecurityBufferOffset)); - inc_rfc1001_len(work->response_buf, - sizeof(struct smb2_negotiate_rsp) - - sizeof(struct smb2_hdr) + AUTH_GSS_LENGTH); rsp->SecurityMode = SMB2_NEGOTIATE_SIGNING_ENABLED_LE; if (server_conf.signing == KSMBD_CONFIG_OPT_MANDATORY) rsp->SecurityMode |= SMB2_NEGOTIATE_SIGNING_REQUIRED_LE; + err = ksmbd_iov_pin_rsp(work, rsp, + sizeof(struct smb2_negotiate_rsp) + AUTH_GSS_LENGTH); + if (err) + return err; conn->use_spnego = true; ksmbd_conn_set_need_negotiate(conn); @@ -390,11 +395,12 @@ static void init_chained_smb2_rsp(struct ksmbd_work *work) next_hdr_offset = le32_to_cpu(req->NextCommand); new_len = ALIGN(len, 8); - inc_rfc1001_len(work->response_buf, - sizeof(struct smb2_hdr) + new_len - len); + work->iov[work->iov_idx].iov_len += (new_len - len); + inc_rfc1001_len(work->response_buf, new_len - len); rsp->NextCommand = cpu_to_le32(new_len); work->next_smb2_rcv_hdr_off += next_hdr_offset; + work->curr_smb2_rsp_hdr_off = work->next_smb2_rsp_hdr_off; work->next_smb2_rsp_hdr_off += new_len; ksmbd_debug(SMB, "Compound req new_len = %d rcv off = %d rsp off = %d\n", @@ -470,10 +476,10 @@ bool is_chained_smb2_message(struct ksmbd_work *work) len = len - get_rfc1002_len(work->response_buf); if (len) { ksmbd_debug(SMB, "padding len %u\n", len); + work->iov[work->iov_idx].iov_len += len; inc_rfc1001_len(work->response_buf, len); - if (work->aux_payload_sz) - work->aux_payload_sz += len; } + work->curr_smb2_rsp_hdr_off = work->next_smb2_rsp_hdr_off; } return false; } @@ -488,11 +494,8 @@ int init_smb2_rsp_hdr(struct ksmbd_work *work) { struct smb2_hdr *rsp_hdr = smb2_get_msg(work->response_buf); struct smb2_hdr *rcv_hdr = smb2_get_msg(work->request_buf); - struct ksmbd_conn *conn = work->conn; memset(rsp_hdr, 0, sizeof(struct smb2_hdr) + 2); - *(__be32 *)work->response_buf = - cpu_to_be32(conn->vals->header_size); rsp_hdr->ProtocolId = rcv_hdr->ProtocolId; rsp_hdr->StructureSize = SMB2_HEADER_STRUCTURE_SIZE; rsp_hdr->Command = rcv_hdr->Command; @@ -657,7 +660,7 @@ int setup_async_work(struct ksmbd_work *work, void (*fn)(void **), void **arg) struct ksmbd_conn *conn = work->conn; int id; - rsp_hdr = smb2_get_msg(work->response_buf); + rsp_hdr = ksmbd_resp_buf_next(work); rsp_hdr->Flags |= SMB2_FLAGS_ASYNC_COMMAND; id = ksmbd_acquire_async_msg_id(&conn->async_ida); @@ -706,15 +709,24 @@ void release_async_work(struct ksmbd_work *work) void smb2_send_interim_resp(struct ksmbd_work *work, __le32 status) { struct smb2_hdr *rsp_hdr; + struct ksmbd_work *in_work = ksmbd_alloc_work_struct(); - rsp_hdr = smb2_get_msg(work->response_buf); - smb2_set_err_rsp(work); + if (allocate_interim_rsp_buf(in_work)) { + pr_err("smb_allocate_rsp_buf failed!\n"); + ksmbd_free_work_struct(in_work); + return; + } + + in_work->conn = work->conn; + memcpy(smb2_get_msg(in_work->response_buf), ksmbd_resp_buf_next(work), + __SMB2_HEADER_STRUCTURE_SIZE); + + rsp_hdr = smb2_get_msg(in_work->response_buf); + smb2_set_err_rsp(in_work); rsp_hdr->Status = status; - work->multiRsp = 1; - ksmbd_conn_write(work); - rsp_hdr->Status = 0; - work->multiRsp = 0; + ksmbd_conn_write(in_work); + ksmbd_free_work_struct(in_work); } static __le32 smb2_get_reparse_tag_special_file(umode_t mode) @@ -821,9 +833,8 @@ static void build_posix_ctxt(struct smb2_posix_neg_context *pneg_ctxt) pneg_ctxt->Name[15] = 0x7C; } -static void assemble_neg_contexts(struct ksmbd_conn *conn, - struct smb2_negotiate_rsp *rsp, - void *smb2_buf_len) +static unsigned int assemble_neg_contexts(struct ksmbd_conn *conn, + struct smb2_negotiate_rsp *rsp) { char * const pneg_ctxt = (char *)rsp + le32_to_cpu(rsp->NegotiateContextOffset); @@ -834,7 +845,6 @@ static void assemble_neg_contexts(struct ksmbd_conn *conn, "assemble SMB2_PREAUTH_INTEGRITY_CAPABILITIES context\n"); build_preauth_ctxt((struct smb2_preauth_neg_context *)pneg_ctxt, conn->preauth_info->Preauth_HashId); - inc_rfc1001_len(smb2_buf_len, AUTH_GSS_PADDING); ctxt_size = sizeof(struct smb2_preauth_neg_context); if (conn->cipher_type) { @@ -874,7 +884,7 @@ static void assemble_neg_contexts(struct ksmbd_conn *conn, } rsp->NegotiateContextCount = cpu_to_le16(neg_ctxt_cnt); - inc_rfc1001_len(smb2_buf_len, ctxt_size); + return ctxt_size + AUTH_GSS_PADDING; } static __le32 decode_preauth_ctxt(struct ksmbd_conn *conn, @@ -1090,7 +1100,7 @@ int smb2_handle_negotiate(struct ksmbd_work *work) struct smb2_negotiate_req *req = smb2_get_msg(work->request_buf); struct smb2_negotiate_rsp *rsp = smb2_get_msg(work->response_buf); int rc = 0; - unsigned int smb2_buf_len, smb2_neg_size; + unsigned int smb2_buf_len, smb2_neg_size, neg_ctxt_len = 0; __le32 status; ksmbd_debug(SMB, "Received negotiate request\n"); @@ -1183,7 +1193,7 @@ int smb2_handle_negotiate(struct ksmbd_work *work) conn->preauth_info->Preauth_HashValue); rsp->NegotiateContextOffset = cpu_to_le32(OFFSET_OF_NEG_CONTEXT); - assemble_neg_contexts(conn, rsp, work->response_buf); + neg_ctxt_len = assemble_neg_contexts(conn, rsp); break; case SMB302_PROT_ID: init_smb3_02_server(conn); @@ -1233,8 +1243,7 @@ int smb2_handle_negotiate(struct ksmbd_work *work) rsp->SecurityBufferLength = cpu_to_le16(AUTH_GSS_LENGTH); ksmbd_copy_gss_neg_header((char *)(&rsp->hdr) + le16_to_cpu(rsp->SecurityBufferOffset)); - inc_rfc1001_len(work->response_buf, sizeof(struct smb2_negotiate_rsp) - - sizeof(struct smb2_hdr) + AUTH_GSS_LENGTH); + rsp->SecurityMode = SMB2_NEGOTIATE_SIGNING_ENABLED_LE; conn->use_spnego = true; @@ -1252,9 +1261,15 @@ int smb2_handle_negotiate(struct ksmbd_work *work) ksmbd_conn_set_need_negotiate(conn); err_out: + if (rc) + rsp->hdr.Status = STATUS_INSUFFICIENT_RESOURCES; + + if (!rc) + rc = ksmbd_iov_pin_rsp(work, rsp, + sizeof(struct smb2_negotiate_rsp) + + AUTH_GSS_LENGTH + neg_ctxt_len); if (rc < 0) smb2_set_err_rsp(work); - return rc; } @@ -1454,7 +1469,6 @@ static int ntlm_authenticate(struct ksmbd_work *work, memcpy((char *)&rsp->hdr.ProtocolId + sz, spnego_blob, spnego_blob_len); rsp->SecurityBufferLength = cpu_to_le16(spnego_blob_len); kfree(spnego_blob); - inc_rfc1001_len(work->response_buf, spnego_blob_len - 1); } user = session_user(conn, req); @@ -1600,7 +1614,6 @@ static int krb5_authenticate(struct ksmbd_work *work, return -EINVAL; } rsp->SecurityBufferLength = cpu_to_le16(out_len); - inc_rfc1001_len(work->response_buf, out_len - 1); if ((conn->sign || server_conf.enforced_signing) || (req->SecurityMode & SMB2_NEGOTIATE_SIGNING_REQUIRED)) @@ -1672,7 +1685,6 @@ int smb2_sess_setup(struct ksmbd_work *work) rsp->SessionFlags = 0; rsp->SecurityBufferOffset = cpu_to_le16(72); rsp->SecurityBufferLength = 0; - inc_rfc1001_len(work->response_buf, 9); ksmbd_conn_lock(conn); if (!req->hdr.SessionId) { @@ -1808,13 +1820,6 @@ int smb2_sess_setup(struct ksmbd_work *work) goto out_err; rsp->hdr.Status = STATUS_MORE_PROCESSING_REQUIRED; - /* - * Note: here total size -1 is done as an - * adjustment for 0 size blob - */ - inc_rfc1001_len(work->response_buf, - le16_to_cpu(rsp->SecurityBufferLength) - 1); - } else if (negblob->MessageType == NtLmAuthenticate) { rc = ntlm_authenticate(work, req, rsp); if (rc) @@ -1899,6 +1904,18 @@ out_err: ksmbd_conn_set_need_negotiate(conn); } } + smb2_set_err_rsp(work); + } else { + unsigned int iov_len; + + if (rsp->SecurityBufferLength) + iov_len = offsetof(struct smb2_sess_setup_rsp, Buffer) + + le16_to_cpu(rsp->SecurityBufferLength); + else + iov_len = sizeof(struct smb2_sess_setup_rsp); + rc = ksmbd_iov_pin_rsp(work, rsp, iov_len); + if (rc) + rsp->hdr.Status = STATUS_INSUFFICIENT_RESOURCES; } ksmbd_conn_unlock(conn); @@ -1977,13 +1994,16 @@ int smb2_tree_connect(struct ksmbd_work *work) status.tree_conn->posix_extensions = true; rsp->StructureSize = cpu_to_le16(16); - inc_rfc1001_len(work->response_buf, 16); out_err1: rsp->Capabilities = 0; rsp->Reserved = 0; /* default manual caching */ rsp->ShareFlags = SMB2_SHAREFLAG_MANUAL_CACHING; + rc = ksmbd_iov_pin_rsp(work, rsp, sizeof(struct smb2_tree_connect_rsp)); + if (rc) + status.ret = KSMBD_TREE_CONN_STATUS_NOMEM; + if (!IS_ERR(treename)) kfree(treename); if (!IS_ERR(name)) @@ -2096,20 +2116,27 @@ int smb2_tree_disconnect(struct ksmbd_work *work) struct smb2_tree_disconnect_req *req; struct ksmbd_session *sess = work->sess; struct ksmbd_tree_connect *tcon = work->tcon; + int err; WORK_BUFFERS(work, req, rsp); - rsp->StructureSize = cpu_to_le16(4); - inc_rfc1001_len(work->response_buf, 4); - ksmbd_debug(SMB, "request\n"); + rsp->StructureSize = cpu_to_le16(4); + err = ksmbd_iov_pin_rsp(work, rsp, + sizeof(struct smb2_tree_disconnect_rsp)); + if (err) { + rsp->hdr.Status = STATUS_INSUFFICIENT_RESOURCES; + smb2_set_err_rsp(work); + return err; + } + if (!tcon || test_and_set_bit(TREE_CONN_EXPIRE, &tcon->status)) { ksmbd_debug(SMB, "Invalid tid %d\n", req->hdr.Id.SyncId.TreeId); rsp->hdr.Status = STATUS_NETWORK_NAME_DELETED; smb2_set_err_rsp(work); - return 0; + return -ENOENT; } ksmbd_close_tree_conn_fds(work); @@ -2131,15 +2158,21 @@ int smb2_session_logoff(struct ksmbd_work *work) struct smb2_logoff_rsp *rsp; struct ksmbd_session *sess; u64 sess_id; + int err; WORK_BUFFERS(work, req, rsp); + ksmbd_debug(SMB, "request\n"); + sess_id = le64_to_cpu(req->hdr.SessionId); rsp->StructureSize = cpu_to_le16(4); - inc_rfc1001_len(work->response_buf, 4); - - ksmbd_debug(SMB, "request\n"); + err = ksmbd_iov_pin_rsp(work, rsp, sizeof(struct smb2_logoff_rsp)); + if (err) { + rsp->hdr.Status = STATUS_INSUFFICIENT_RESOURCES; + smb2_set_err_rsp(work); + return err; + } ksmbd_all_conn_set_status(sess_id, KSMBD_SESS_NEED_RECONNECT); ksmbd_close_session_fds(work); @@ -2154,7 +2187,7 @@ int smb2_session_logoff(struct ksmbd_work *work) ksmbd_debug(SMB, "Invalid tid %d\n", req->hdr.Id.SyncId.TreeId); rsp->hdr.Status = STATUS_NETWORK_NAME_DELETED; smb2_set_err_rsp(work); - return 0; + return -ENOENT; } ksmbd_destroy_file_table(&sess->file_table); @@ -2215,7 +2248,10 @@ static noinline int create_smb2_pipe(struct ksmbd_work *work) rsp->CreateContextsOffset = 0; rsp->CreateContextsLength = 0; - inc_rfc1001_len(work->response_buf, 88); /* StructureSize - 1*/ + err = ksmbd_iov_pin_rsp(work, rsp, offsetof(struct smb2_create_rsp, Buffer)); + if (err) + goto out; + kfree(name); return 0; @@ -2324,9 +2360,16 @@ next: break; buf_len -= next; eabuf = (struct smb2_ea_info *)((char *)eabuf + next); - if (next < (u32)eabuf->EaNameLength + le16_to_cpu(eabuf->EaValueLength)) + if (buf_len < sizeof(struct smb2_ea_info)) { + rc = -EINVAL; break; + } + if (buf_len < sizeof(struct smb2_ea_info) + eabuf->EaNameLength + + le16_to_cpu(eabuf->EaValueLength)) { + rc = -EINVAL; + break; + } } while (next != 0); kfree(attr_name); @@ -2590,6 +2633,7 @@ int smb2_open(struct ksmbd_work *work) u64 time; umode_t posix_mode = 0; __le32 daccess, maximal_access = 0; + int iov_len = 0; WORK_BUFFERS(work, req, rsp); @@ -3241,7 +3285,7 @@ int smb2_open(struct ksmbd_work *work) rsp->CreateContextsOffset = 0; rsp->CreateContextsLength = 0; - inc_rfc1001_len(work->response_buf, 88); /* StructureSize - 1*/ + iov_len = offsetof(struct smb2_create_rsp, Buffer); /* If lease is request send lease context response */ if (opinfo && opinfo->is_lease) { @@ -3256,8 +3300,7 @@ int smb2_open(struct ksmbd_work *work) create_lease_buf(rsp->Buffer, opinfo->o_lease); le32_add_cpu(&rsp->CreateContextsLength, conn->vals->create_lease_size); - inc_rfc1001_len(work->response_buf, - conn->vals->create_lease_size); + iov_len += conn->vals->create_lease_size; next_ptr = &lease_ccontext->Next; next_off = conn->vals->create_lease_size; } @@ -3277,8 +3320,7 @@ int smb2_open(struct ksmbd_work *work) le32_to_cpu(maximal_access)); le32_add_cpu(&rsp->CreateContextsLength, conn->vals->create_mxac_size); - inc_rfc1001_len(work->response_buf, - conn->vals->create_mxac_size); + iov_len += conn->vals->create_mxac_size; if (next_ptr) *next_ptr = cpu_to_le32(next_off); next_ptr = &mxac_ccontext->Next; @@ -3296,8 +3338,7 @@ int smb2_open(struct ksmbd_work *work) stat.ino, tcon->id); le32_add_cpu(&rsp->CreateContextsLength, conn->vals->create_disk_id_size); - inc_rfc1001_len(work->response_buf, - conn->vals->create_disk_id_size); + iov_len += conn->vals->create_disk_id_size; if (next_ptr) *next_ptr = cpu_to_le32(next_off); next_ptr = &disk_id_ccontext->Next; @@ -3311,8 +3352,7 @@ int smb2_open(struct ksmbd_work *work) fp); le32_add_cpu(&rsp->CreateContextsLength, conn->vals->create_posix_size); - inc_rfc1001_len(work->response_buf, - conn->vals->create_posix_size); + iov_len += conn->vals->create_posix_size; if (next_ptr) *next_ptr = cpu_to_le32(next_off); } @@ -3330,7 +3370,8 @@ err_out: } ksmbd_revert_fsids(work); err_out1: - + if (!rc) + rc = ksmbd_iov_pin_rsp(work, (void *)rsp, iov_len); if (rc) { if (rc == -EINVAL) rsp->hdr.Status = STATUS_INVALID_PARAMETER; @@ -4056,7 +4097,10 @@ int smb2_query_dir(struct ksmbd_work *work) rsp->OutputBufferOffset = cpu_to_le16(0); rsp->OutputBufferLength = cpu_to_le32(0); rsp->Buffer[0] = 0; - inc_rfc1001_len(work->response_buf, 9); + rc = ksmbd_iov_pin_rsp(work, (void *)rsp, + sizeof(struct smb2_query_directory_rsp)); + if (rc) + goto err_out; } else { no_buf_len: ((struct file_directory_info *) @@ -4068,7 +4112,11 @@ no_buf_len: rsp->StructureSize = cpu_to_le16(9); rsp->OutputBufferOffset = cpu_to_le16(72); rsp->OutputBufferLength = cpu_to_le32(d_info.data_count); - inc_rfc1001_len(work->response_buf, 8 + d_info.data_count); + rc = ksmbd_iov_pin_rsp(work, (void *)rsp, + offsetof(struct smb2_query_directory_rsp, Buffer) + + d_info.data_count); + if (rc) + goto err_out; } kfree(srch_ptr); @@ -4109,27 +4157,18 @@ err_out2: * @reqOutputBufferLength: max buffer length expected in command response * @rsp: query info response buffer contains output buffer length * @rsp_org: base response buffer pointer in case of chained response - * @infoclass_size: query info class response buffer size * * Return: 0 on success, otherwise error */ static int buffer_check_err(int reqOutputBufferLength, struct smb2_query_info_rsp *rsp, - void *rsp_org, int infoclass_size) + void *rsp_org) { if (reqOutputBufferLength < le32_to_cpu(rsp->OutputBufferLength)) { - if (reqOutputBufferLength < infoclass_size) { - pr_err("Invalid Buffer Size Requested\n"); - rsp->hdr.Status = STATUS_INFO_LENGTH_MISMATCH; - *(__be32 *)rsp_org = cpu_to_be32(sizeof(struct smb2_hdr)); - return -EINVAL; - } - - ksmbd_debug(SMB, "Buffer Overflow\n"); - rsp->hdr.Status = STATUS_BUFFER_OVERFLOW; - *(__be32 *)rsp_org = cpu_to_be32(sizeof(struct smb2_hdr) + - reqOutputBufferLength); - rsp->OutputBufferLength = cpu_to_le32(reqOutputBufferLength); + pr_err("Invalid Buffer Size Requested\n"); + rsp->hdr.Status = STATUS_INFO_LENGTH_MISMATCH; + *(__be32 *)rsp_org = cpu_to_be32(sizeof(struct smb2_hdr)); + return -EINVAL; } return 0; } @@ -4148,7 +4187,6 @@ static void get_standard_info_pipe(struct smb2_query_info_rsp *rsp, sinfo->Directory = 0; rsp->OutputBufferLength = cpu_to_le32(sizeof(struct smb2_file_standard_info)); - inc_rfc1001_len(rsp_org, sizeof(struct smb2_file_standard_info)); } static void get_internal_info_pipe(struct smb2_query_info_rsp *rsp, u64 num, @@ -4162,7 +4200,6 @@ static void get_internal_info_pipe(struct smb2_query_info_rsp *rsp, u64 num, file_info->IndexNumber = cpu_to_le64(num | (1ULL << 63)); rsp->OutputBufferLength = cpu_to_le32(sizeof(struct smb2_file_internal_info)); - inc_rfc1001_len(rsp_org, sizeof(struct smb2_file_internal_info)); } static int smb2_get_info_file_pipe(struct ksmbd_session *sess, @@ -4188,14 +4225,12 @@ static int smb2_get_info_file_pipe(struct ksmbd_session *sess, case FILE_STANDARD_INFORMATION: get_standard_info_pipe(rsp, rsp_org); rc = buffer_check_err(le32_to_cpu(req->OutputBufferLength), - rsp, rsp_org, - FILE_STANDARD_INFORMATION_SIZE); + rsp, rsp_org); break; case FILE_INTERNAL_INFORMATION: get_internal_info_pipe(rsp, id, rsp_org); rc = buffer_check_err(le32_to_cpu(req->OutputBufferLength), - rsp, rsp_org, - FILE_INTERNAL_INFORMATION_SIZE); + rsp, rsp_org); break; default: ksmbd_debug(SMB, "smb2_info_file_pipe for %u not supported\n", @@ -4301,7 +4336,7 @@ static int smb2_get_ea(struct ksmbd_work *work, struct ksmbd_file *fp, if (!strncmp(name, XATTR_USER_PREFIX, XATTR_USER_PREFIX_LEN)) name_len -= XATTR_USER_PREFIX_LEN; - ptr = (char *)(&eainfo->name + name_len + 1); + ptr = eainfo->name + name_len + 1; buf_free_len -= (offsetof(struct smb2_ea_info, name) + name_len + 1); /* bailout if xattr can't fit in buf_free_len */ @@ -4363,7 +4398,6 @@ done: if (rsp_data_cnt == 0) rsp->hdr.Status = STATUS_NO_EAS_ON_FILE; rsp->OutputBufferLength = cpu_to_le32(rsp_data_cnt); - inc_rfc1001_len(rsp_org, rsp_data_cnt); out: kvfree(xattr_list); return rc; @@ -4378,7 +4412,6 @@ static void get_file_access_info(struct smb2_query_info_rsp *rsp, file_info->AccessFlags = fp->daccess; rsp->OutputBufferLength = cpu_to_le32(sizeof(struct smb2_file_access_info)); - inc_rfc1001_len(rsp_org, sizeof(struct smb2_file_access_info)); } static int get_file_basic_info(struct smb2_query_info_rsp *rsp, @@ -4395,8 +4428,8 @@ static int get_file_basic_info(struct smb2_query_info_rsp *rsp, } basic_info = (struct smb2_file_basic_info *)rsp->Buffer; - generic_fillattr(file_mnt_idmap(fp->filp), file_inode(fp->filp), - &stat); + generic_fillattr(file_mnt_idmap(fp->filp), STATX_BASIC_STATS, + file_inode(fp->filp), &stat); basic_info->CreationTime = cpu_to_le64(fp->create_time); time = ksmbd_UnixTimeToNT(stat.atime); basic_info->LastAccessTime = cpu_to_le64(time); @@ -4408,7 +4441,6 @@ static int get_file_basic_info(struct smb2_query_info_rsp *rsp, basic_info->Pad1 = 0; rsp->OutputBufferLength = cpu_to_le32(sizeof(struct smb2_file_basic_info)); - inc_rfc1001_len(rsp_org, sizeof(struct smb2_file_basic_info)); return 0; } @@ -4421,7 +4453,7 @@ static void get_file_standard_info(struct smb2_query_info_rsp *rsp, struct kstat stat; inode = file_inode(fp->filp); - generic_fillattr(file_mnt_idmap(fp->filp), inode, &stat); + generic_fillattr(file_mnt_idmap(fp->filp), STATX_BASIC_STATS, inode, &stat); sinfo = (struct smb2_file_standard_info *)rsp->Buffer; delete_pending = ksmbd_inode_pending_delete(fp); @@ -4433,8 +4465,6 @@ static void get_file_standard_info(struct smb2_query_info_rsp *rsp, sinfo->Directory = S_ISDIR(stat.mode) ? 1 : 0; rsp->OutputBufferLength = cpu_to_le32(sizeof(struct smb2_file_standard_info)); - inc_rfc1001_len(rsp_org, - sizeof(struct smb2_file_standard_info)); } static void get_file_alignment_info(struct smb2_query_info_rsp *rsp, @@ -4446,8 +4476,6 @@ static void get_file_alignment_info(struct smb2_query_info_rsp *rsp, file_info->AlignmentRequirement = 0; rsp->OutputBufferLength = cpu_to_le32(sizeof(struct smb2_file_alignment_info)); - inc_rfc1001_len(rsp_org, - sizeof(struct smb2_file_alignment_info)); } static int get_file_all_info(struct ksmbd_work *work, @@ -4475,7 +4503,7 @@ static int get_file_all_info(struct ksmbd_work *work, return PTR_ERR(filename); inode = file_inode(fp->filp); - generic_fillattr(file_mnt_idmap(fp->filp), inode, &stat); + generic_fillattr(file_mnt_idmap(fp->filp), STATX_BASIC_STATS, inode, &stat); ksmbd_debug(SMB, "filename = %s\n", filename); delete_pending = ksmbd_inode_pending_delete(fp); @@ -4511,7 +4539,6 @@ static int get_file_all_info(struct ksmbd_work *work, rsp->OutputBufferLength = cpu_to_le32(sizeof(struct smb2_file_all_info) + conv_len - 1); kfree(filename); - inc_rfc1001_len(rsp_org, le32_to_cpu(rsp->OutputBufferLength)); return 0; } @@ -4534,7 +4561,6 @@ static void get_file_alternate_info(struct ksmbd_work *work, file_info->FileNameLength = cpu_to_le32(conv_len); rsp->OutputBufferLength = cpu_to_le32(sizeof(struct smb2_file_alt_name_info) + conv_len); - inc_rfc1001_len(rsp_org, le32_to_cpu(rsp->OutputBufferLength)); } static void get_file_stream_info(struct ksmbd_work *work, @@ -4552,8 +4578,8 @@ static void get_file_stream_info(struct ksmbd_work *work, int buf_free_len; struct smb2_query_info_req *req = ksmbd_req_buf_next(work); - generic_fillattr(file_mnt_idmap(fp->filp), file_inode(fp->filp), - &stat); + generic_fillattr(file_mnt_idmap(fp->filp), STATX_BASIC_STATS, + file_inode(fp->filp), &stat); file_info = (struct smb2_file_stream_info *)rsp->Buffer; buf_free_len = @@ -4634,7 +4660,6 @@ out: kvfree(xattr_list); rsp->OutputBufferLength = cpu_to_le32(nbytes); - inc_rfc1001_len(rsp_org, nbytes); } static void get_file_internal_info(struct smb2_query_info_rsp *rsp, @@ -4643,13 +4668,12 @@ static void get_file_internal_info(struct smb2_query_info_rsp *rsp, struct smb2_file_internal_info *file_info; struct kstat stat; - generic_fillattr(file_mnt_idmap(fp->filp), file_inode(fp->filp), - &stat); + generic_fillattr(file_mnt_idmap(fp->filp), STATX_BASIC_STATS, + file_inode(fp->filp), &stat); file_info = (struct smb2_file_internal_info *)rsp->Buffer; file_info->IndexNumber = cpu_to_le64(stat.ino); rsp->OutputBufferLength = cpu_to_le32(sizeof(struct smb2_file_internal_info)); - inc_rfc1001_len(rsp_org, sizeof(struct smb2_file_internal_info)); } static int get_file_network_open_info(struct smb2_query_info_rsp *rsp, @@ -4669,7 +4693,7 @@ static int get_file_network_open_info(struct smb2_query_info_rsp *rsp, file_info = (struct smb2_file_ntwrk_info *)rsp->Buffer; inode = file_inode(fp->filp); - generic_fillattr(file_mnt_idmap(fp->filp), inode, &stat); + generic_fillattr(file_mnt_idmap(fp->filp), STATX_BASIC_STATS, inode, &stat); file_info->CreationTime = cpu_to_le64(fp->create_time); time = ksmbd_UnixTimeToNT(stat.atime); @@ -4685,7 +4709,6 @@ static int get_file_network_open_info(struct smb2_query_info_rsp *rsp, file_info->Reserved = cpu_to_le32(0); rsp->OutputBufferLength = cpu_to_le32(sizeof(struct smb2_file_ntwrk_info)); - inc_rfc1001_len(rsp_org, sizeof(struct smb2_file_ntwrk_info)); return 0; } @@ -4697,7 +4720,6 @@ static void get_file_ea_info(struct smb2_query_info_rsp *rsp, void *rsp_org) file_info->EASize = 0; rsp->OutputBufferLength = cpu_to_le32(sizeof(struct smb2_file_ea_info)); - inc_rfc1001_len(rsp_org, sizeof(struct smb2_file_ea_info)); } static void get_file_position_info(struct smb2_query_info_rsp *rsp, @@ -4709,7 +4731,6 @@ static void get_file_position_info(struct smb2_query_info_rsp *rsp, file_info->CurrentByteOffset = cpu_to_le64(fp->filp->f_pos); rsp->OutputBufferLength = cpu_to_le32(sizeof(struct smb2_file_pos_info)); - inc_rfc1001_len(rsp_org, sizeof(struct smb2_file_pos_info)); } static void get_file_mode_info(struct smb2_query_info_rsp *rsp, @@ -4721,7 +4742,6 @@ static void get_file_mode_info(struct smb2_query_info_rsp *rsp, file_info->Mode = fp->coption & FILE_MODE_INFO_MASK; rsp->OutputBufferLength = cpu_to_le32(sizeof(struct smb2_file_mode_info)); - inc_rfc1001_len(rsp_org, sizeof(struct smb2_file_mode_info)); } static void get_file_compression_info(struct smb2_query_info_rsp *rsp, @@ -4730,8 +4750,8 @@ static void get_file_compression_info(struct smb2_query_info_rsp *rsp, struct smb2_file_comp_info *file_info; struct kstat stat; - generic_fillattr(file_mnt_idmap(fp->filp), file_inode(fp->filp), - &stat); + generic_fillattr(file_mnt_idmap(fp->filp), STATX_BASIC_STATS, + file_inode(fp->filp), &stat); file_info = (struct smb2_file_comp_info *)rsp->Buffer; file_info->CompressedFileSize = cpu_to_le64(stat.blocks << 9); @@ -4743,7 +4763,6 @@ static void get_file_compression_info(struct smb2_query_info_rsp *rsp, rsp->OutputBufferLength = cpu_to_le32(sizeof(struct smb2_file_comp_info)); - inc_rfc1001_len(rsp_org, sizeof(struct smb2_file_comp_info)); } static int get_file_attribute_tag_info(struct smb2_query_info_rsp *rsp, @@ -4762,11 +4781,10 @@ static int get_file_attribute_tag_info(struct smb2_query_info_rsp *rsp, file_info->ReparseTag = 0; rsp->OutputBufferLength = cpu_to_le32(sizeof(struct smb2_file_attr_tag_info)); - inc_rfc1001_len(rsp_org, sizeof(struct smb2_file_attr_tag_info)); return 0; } -static int find_file_posix_info(struct smb2_query_info_rsp *rsp, +static void find_file_posix_info(struct smb2_query_info_rsp *rsp, struct ksmbd_file *fp, void *rsp_org) { struct smb311_posix_qinfo *file_info; @@ -4783,7 +4801,7 @@ static int find_file_posix_info(struct smb2_query_info_rsp *rsp, file_info->LastAccessTime = cpu_to_le64(time); time = ksmbd_UnixTimeToNT(inode->i_mtime); file_info->LastWriteTime = cpu_to_le64(time); - time = ksmbd_UnixTimeToNT(inode->i_ctime); + time = ksmbd_UnixTimeToNT(inode_get_ctime(inode)); file_info->ChangeTime = cpu_to_le64(time); file_info->DosAttributes = fp->f_ci->m_fattr; file_info->Inode = cpu_to_le64(inode->i_ino); @@ -4804,8 +4822,6 @@ static int find_file_posix_info(struct smb2_query_info_rsp *rsp, SIDUNIX_GROUP, (struct smb_sid *)&file_info->Sids[16]); rsp->OutputBufferLength = cpu_to_le32(out_buf_len); - inc_rfc1001_len(rsp_org, out_buf_len); - return out_buf_len; } static int smb2_get_info_file(struct ksmbd_work *work, @@ -4815,7 +4831,6 @@ static int smb2_get_info_file(struct ksmbd_work *work, struct ksmbd_file *fp; int fileinfoclass = 0; int rc = 0; - int file_infoclass_size; unsigned int id = KSMBD_NO_FID, pid = KSMBD_NO_FID; if (test_share_config_flag(work->tcon->share_conf, @@ -4848,85 +4863,69 @@ static int smb2_get_info_file(struct ksmbd_work *work, switch (fileinfoclass) { case FILE_ACCESS_INFORMATION: get_file_access_info(rsp, fp, work->response_buf); - file_infoclass_size = FILE_ACCESS_INFORMATION_SIZE; break; case FILE_BASIC_INFORMATION: rc = get_file_basic_info(rsp, fp, work->response_buf); - file_infoclass_size = FILE_BASIC_INFORMATION_SIZE; break; case FILE_STANDARD_INFORMATION: get_file_standard_info(rsp, fp, work->response_buf); - file_infoclass_size = FILE_STANDARD_INFORMATION_SIZE; break; case FILE_ALIGNMENT_INFORMATION: get_file_alignment_info(rsp, work->response_buf); - file_infoclass_size = FILE_ALIGNMENT_INFORMATION_SIZE; break; case FILE_ALL_INFORMATION: rc = get_file_all_info(work, rsp, fp, work->response_buf); - file_infoclass_size = FILE_ALL_INFORMATION_SIZE; break; case FILE_ALTERNATE_NAME_INFORMATION: get_file_alternate_info(work, rsp, fp, work->response_buf); - file_infoclass_size = FILE_ALTERNATE_NAME_INFORMATION_SIZE; break; case FILE_STREAM_INFORMATION: get_file_stream_info(work, rsp, fp, work->response_buf); - file_infoclass_size = FILE_STREAM_INFORMATION_SIZE; break; case FILE_INTERNAL_INFORMATION: get_file_internal_info(rsp, fp, work->response_buf); - file_infoclass_size = FILE_INTERNAL_INFORMATION_SIZE; break; case FILE_NETWORK_OPEN_INFORMATION: rc = get_file_network_open_info(rsp, fp, work->response_buf); - file_infoclass_size = FILE_NETWORK_OPEN_INFORMATION_SIZE; break; case FILE_EA_INFORMATION: get_file_ea_info(rsp, work->response_buf); - file_infoclass_size = FILE_EA_INFORMATION_SIZE; break; case FILE_FULL_EA_INFORMATION: rc = smb2_get_ea(work, fp, req, rsp, work->response_buf); - file_infoclass_size = FILE_FULL_EA_INFORMATION_SIZE; break; case FILE_POSITION_INFORMATION: get_file_position_info(rsp, fp, work->response_buf); - file_infoclass_size = FILE_POSITION_INFORMATION_SIZE; break; case FILE_MODE_INFORMATION: get_file_mode_info(rsp, fp, work->response_buf); - file_infoclass_size = FILE_MODE_INFORMATION_SIZE; break; case FILE_COMPRESSION_INFORMATION: get_file_compression_info(rsp, fp, work->response_buf); - file_infoclass_size = FILE_COMPRESSION_INFORMATION_SIZE; break; case FILE_ATTRIBUTE_TAG_INFORMATION: rc = get_file_attribute_tag_info(rsp, fp, work->response_buf); - file_infoclass_size = FILE_ATTRIBUTE_TAG_INFORMATION_SIZE; break; case SMB_FIND_FILE_POSIX_INFO: if (!work->tcon->posix_extensions) { pr_err("client doesn't negotiate with SMB3.1.1 POSIX Extensions\n"); rc = -EOPNOTSUPP; } else { - file_infoclass_size = find_file_posix_info(rsp, fp, - work->response_buf); + find_file_posix_info(rsp, fp, work->response_buf); } break; default: @@ -4936,8 +4935,7 @@ static int smb2_get_info_file(struct ksmbd_work *work, } if (!rc) rc = buffer_check_err(le32_to_cpu(req->OutputBufferLength), - rsp, work->response_buf, - file_infoclass_size); + rsp, work->response_buf); ksmbd_fd_put(work, fp); return rc; } @@ -4953,7 +4951,6 @@ static int smb2_get_info_filesystem(struct ksmbd_work *work, struct kstatfs stfs; struct path path; int rc = 0, len; - int fs_infoclass_size = 0; if (!share->path) return -EIO; @@ -4983,8 +4980,6 @@ static int smb2_get_info_filesystem(struct ksmbd_work *work, info->DeviceType = cpu_to_le32(stfs.f_type); info->DeviceCharacteristics = cpu_to_le32(0x00000020); rsp->OutputBufferLength = cpu_to_le32(8); - inc_rfc1001_len(work->response_buf, 8); - fs_infoclass_size = FS_DEVICE_INFORMATION_SIZE; break; } case FS_ATTRIBUTE_INFORMATION: @@ -5013,8 +5008,6 @@ static int smb2_get_info_filesystem(struct ksmbd_work *work, info->FileSystemNameLen = cpu_to_le32(len); sz = sizeof(struct filesystem_attribute_info) - 2 + len; rsp->OutputBufferLength = cpu_to_le32(sz); - inc_rfc1001_len(work->response_buf, sz); - fs_infoclass_size = FS_ATTRIBUTE_INFORMATION_SIZE; break; } case FS_VOLUME_INFORMATION: @@ -5041,8 +5034,6 @@ static int smb2_get_info_filesystem(struct ksmbd_work *work, info->Reserved = 0; sz = sizeof(struct filesystem_vol_info) - 2 + len; rsp->OutputBufferLength = cpu_to_le32(sz); - inc_rfc1001_len(work->response_buf, sz); - fs_infoclass_size = FS_VOLUME_INFORMATION_SIZE; break; } case FS_SIZE_INFORMATION: @@ -5055,8 +5046,6 @@ static int smb2_get_info_filesystem(struct ksmbd_work *work, info->SectorsPerAllocationUnit = cpu_to_le32(1); info->BytesPerSector = cpu_to_le32(stfs.f_bsize); rsp->OutputBufferLength = cpu_to_le32(24); - inc_rfc1001_len(work->response_buf, 24); - fs_infoclass_size = FS_SIZE_INFORMATION_SIZE; break; } case FS_FULL_SIZE_INFORMATION: @@ -5072,8 +5061,6 @@ static int smb2_get_info_filesystem(struct ksmbd_work *work, info->SectorsPerAllocationUnit = cpu_to_le32(1); info->BytesPerSector = cpu_to_le32(stfs.f_bsize); rsp->OutputBufferLength = cpu_to_le32(32); - inc_rfc1001_len(work->response_buf, 32); - fs_infoclass_size = FS_FULL_SIZE_INFORMATION_SIZE; break; } case FS_OBJECT_ID_INFORMATION: @@ -5093,8 +5080,6 @@ static int smb2_get_info_filesystem(struct ksmbd_work *work, info->extended_info.rel_date = 0; memcpy(info->extended_info.version_string, "1.1.0", strlen("1.1.0")); rsp->OutputBufferLength = cpu_to_le32(64); - inc_rfc1001_len(work->response_buf, 64); - fs_infoclass_size = FS_OBJECT_ID_INFORMATION_SIZE; break; } case FS_SECTOR_SIZE_INFORMATION: @@ -5116,8 +5101,6 @@ static int smb2_get_info_filesystem(struct ksmbd_work *work, info->ByteOffsetForSectorAlignment = 0; info->ByteOffsetForPartitionAlignment = 0; rsp->OutputBufferLength = cpu_to_le32(28); - inc_rfc1001_len(work->response_buf, 28); - fs_infoclass_size = FS_SECTOR_SIZE_INFORMATION_SIZE; break; } case FS_CONTROL_INFORMATION: @@ -5138,8 +5121,6 @@ static int smb2_get_info_filesystem(struct ksmbd_work *work, info->DefaultQuotaLimit = cpu_to_le64(SMB2_NO_FID); info->Padding = 0; rsp->OutputBufferLength = cpu_to_le32(48); - inc_rfc1001_len(work->response_buf, 48); - fs_infoclass_size = FS_CONTROL_INFORMATION_SIZE; break; } case FS_POSIX_INFORMATION: @@ -5159,8 +5140,6 @@ static int smb2_get_info_filesystem(struct ksmbd_work *work, info->TotalFileNodes = cpu_to_le64(stfs.f_files); info->FreeFileNodes = cpu_to_le64(stfs.f_ffree); rsp->OutputBufferLength = cpu_to_le32(56); - inc_rfc1001_len(work->response_buf, 56); - fs_infoclass_size = FS_POSIX_INFORMATION_SIZE; } break; } @@ -5169,8 +5148,7 @@ static int smb2_get_info_filesystem(struct ksmbd_work *work, return -EOPNOTSUPP; } rc = buffer_check_err(le32_to_cpu(req->OutputBufferLength), - rsp, work->response_buf, - fs_infoclass_size); + rsp, work->response_buf); path_put(&path); return rc; } @@ -5204,7 +5182,6 @@ static int smb2_get_info_sec(struct ksmbd_work *work, secdesclen = sizeof(struct smb_ntsd); rsp->OutputBufferLength = cpu_to_le32(secdesclen); - inc_rfc1001_len(work->response_buf, secdesclen); return 0; } @@ -5249,7 +5226,6 @@ static int smb2_get_info_sec(struct ksmbd_work *work, return rc; rsp->OutputBufferLength = cpu_to_le32(secdesclen); - inc_rfc1001_len(work->response_buf, secdesclen); return 0; } @@ -5288,6 +5264,14 @@ int smb2_query_info(struct ksmbd_work *work) rc = -EOPNOTSUPP; } + if (!rc) { + rsp->StructureSize = cpu_to_le16(9); + rsp->OutputBufferOffset = cpu_to_le16(72); + rc = ksmbd_iov_pin_rsp(work, (void *)rsp, + offsetof(struct smb2_query_info_rsp, Buffer) + + le32_to_cpu(rsp->OutputBufferLength)); + } + if (rc < 0) { if (rc == -EACCES) rsp->hdr.Status = STATUS_ACCESS_DENIED; @@ -5295,6 +5279,8 @@ int smb2_query_info(struct ksmbd_work *work) rsp->hdr.Status = STATUS_FILE_CLOSED; else if (rc == -EIO) rsp->hdr.Status = STATUS_UNEXPECTED_IO_ERROR; + else if (rc == -ENOMEM) + rsp->hdr.Status = STATUS_INSUFFICIENT_RESOURCES; else if (rc == -EOPNOTSUPP || rsp->hdr.Status == 0) rsp->hdr.Status = STATUS_INVALID_INFO_CLASS; smb2_set_err_rsp(work); @@ -5303,9 +5289,6 @@ int smb2_query_info(struct ksmbd_work *work) rc); return rc; } - rsp->StructureSize = cpu_to_le16(9); - rsp->OutputBufferOffset = cpu_to_le16(72); - inc_rfc1001_len(work->response_buf, 8); return 0; } @@ -5336,8 +5319,9 @@ static noinline int smb2_close_pipe(struct ksmbd_work *work) rsp->AllocationSize = 0; rsp->EndOfFile = 0; rsp->Attributes = 0; - inc_rfc1001_len(work->response_buf, 60); - return 0; + + return ksmbd_iov_pin_rsp(work, (void *)rsp, + sizeof(struct smb2_close_rsp)); } /** @@ -5426,7 +5410,7 @@ int smb2_close(struct ksmbd_work *work) rsp->LastAccessTime = cpu_to_le64(time); time = ksmbd_UnixTimeToNT(inode->i_mtime); rsp->LastWriteTime = cpu_to_le64(time); - time = ksmbd_UnixTimeToNT(inode->i_ctime); + time = ksmbd_UnixTimeToNT(inode_get_ctime(inode)); rsp->ChangeTime = cpu_to_le64(time); ksmbd_fd_put(work, fp); } else { @@ -5442,15 +5426,17 @@ int smb2_close(struct ksmbd_work *work) err = ksmbd_close_fd(work, volatile_id); out: + if (!err) + err = ksmbd_iov_pin_rsp(work, (void *)rsp, + sizeof(struct smb2_close_rsp)); + if (err) { if (rsp->hdr.Status == 0) rsp->hdr.Status = STATUS_FILE_CLOSED; smb2_set_err_rsp(work); - } else { - inc_rfc1001_len(work->response_buf, 60); } - return 0; + return err; } /** @@ -5468,8 +5454,7 @@ int smb2_echo(struct ksmbd_work *work) rsp->StructureSize = cpu_to_le16(4); rsp->Reserved = 0; - inc_rfc1001_len(work->response_buf, 4); - return 0; + return ksmbd_iov_pin_rsp(work, rsp, sizeof(struct smb2_echo_rsp)); } static int smb2_rename(struct ksmbd_work *work, @@ -5649,7 +5634,7 @@ static int set_file_basic_info(struct ksmbd_file *fp, if (file_info->ChangeTime) attrs.ia_ctime = ksmbd_NTtimeToUnix(file_info->ChangeTime); else - attrs.ia_ctime = inode->i_ctime; + attrs.ia_ctime = inode_get_ctime(inode); if (file_info->LastWriteTime) { attrs.ia_mtime = ksmbd_NTtimeToUnix(file_info->LastWriteTime); @@ -5694,7 +5679,7 @@ static int set_file_basic_info(struct ksmbd_file *fp, return -EACCES; inode_lock(inode); - inode->i_ctime = attrs.ia_ctime; + inode_set_ctime_to_ts(inode, attrs.ia_ctime); attrs.ia_valid &= ~ATTR_CTIME; rc = notify_change(idmap, dentry, &attrs, NULL); inode_unlock(inode); @@ -6061,7 +6046,10 @@ int smb2_set_info(struct ksmbd_work *work) goto err_out; rsp->StructureSize = cpu_to_le16(2); - inc_rfc1001_len(work->response_buf, 2); + rc = ksmbd_iov_pin_rsp(work, (void *)rsp, + sizeof(struct smb2_set_info_rsp)); + if (rc) + goto err_out; ksmbd_fd_put(work, fp); return 0; @@ -6108,28 +6096,36 @@ static noinline int smb2_read_pipe(struct ksmbd_work *work) id = req->VolatileFileId; - inc_rfc1001_len(work->response_buf, 16); rpc_resp = ksmbd_rpc_read(work->sess, id); if (rpc_resp) { + void *aux_payload_buf; + if (rpc_resp->flags != KSMBD_RPC_OK) { err = -EINVAL; goto out; } - work->aux_payload_buf = + aux_payload_buf = kvmalloc(rpc_resp->payload_sz, GFP_KERNEL); - if (!work->aux_payload_buf) { + if (!aux_payload_buf) { err = -ENOMEM; goto out; } - memcpy(work->aux_payload_buf, rpc_resp->payload, - rpc_resp->payload_sz); + memcpy(aux_payload_buf, rpc_resp->payload, rpc_resp->payload_sz); nbytes = rpc_resp->payload_sz; - work->resp_hdr_sz = get_rfc1002_len(work->response_buf) + 4; - work->aux_payload_sz = nbytes; kvfree(rpc_resp); + err = ksmbd_iov_pin_rsp_read(work, (void *)rsp, + offsetof(struct smb2_read_rsp, Buffer), + aux_payload_buf, nbytes); + if (err) + goto out; + } else { + err = ksmbd_iov_pin_rsp(work, (void *)rsp, + offsetof(struct smb2_read_rsp, Buffer)); + if (err) + goto out; } rsp->StructureSize = cpu_to_le16(17); @@ -6138,7 +6134,6 @@ static noinline int smb2_read_pipe(struct ksmbd_work *work) rsp->DataLength = cpu_to_le32(nbytes); rsp->DataRemaining = 0; rsp->Flags = 0; - inc_rfc1001_len(work->response_buf, nbytes); return 0; out: @@ -6212,13 +6207,8 @@ int smb2_read(struct ksmbd_work *work) int err = 0; bool is_rdma_channel = false; unsigned int max_read_size = conn->vals->max_read_size; - - WORK_BUFFERS(work, req, rsp); - if (work->next_smb2_rcv_hdr_off) { - work->send_no_response = 1; - err = -EOPNOTSUPP; - goto out; - } + unsigned int id = KSMBD_NO_FID, pid = KSMBD_NO_FID; + void *aux_payload_buf; if (test_share_config_flag(work->tcon->share_conf, KSMBD_SHARE_FLAG_PIPE)) { @@ -6226,6 +6216,25 @@ int smb2_read(struct ksmbd_work *work) return smb2_read_pipe(work); } + if (work->next_smb2_rcv_hdr_off) { + req = ksmbd_req_buf_next(work); + rsp = ksmbd_resp_buf_next(work); + if (!has_file_id(req->VolatileFileId)) { + ksmbd_debug(SMB, "Compound request set FID = %llu\n", + work->compound_fid); + id = work->compound_fid; + pid = work->compound_pfid; + } + } else { + req = smb2_get_msg(work->request_buf); + rsp = smb2_get_msg(work->response_buf); + } + + if (!has_file_id(id)) { + id = req->VolatileFileId; + pid = req->PersistentFileId; + } + if (req->Channel == SMB2_CHANNEL_RDMA_V1_INVALIDATE || req->Channel == SMB2_CHANNEL_RDMA_V1) { is_rdma_channel = true; @@ -6248,7 +6257,7 @@ int smb2_read(struct ksmbd_work *work) goto out; } - fp = ksmbd_lookup_fd_slow(work, req->VolatileFileId, req->PersistentFileId); + fp = ksmbd_lookup_fd_slow(work, id, pid); if (!fp) { err = -ENOENT; goto out; @@ -6274,21 +6283,20 @@ int smb2_read(struct ksmbd_work *work) ksmbd_debug(SMB, "filename %pD, offset %lld, len %zu\n", fp->filp, offset, length); - work->aux_payload_buf = kvzalloc(length, GFP_KERNEL); - if (!work->aux_payload_buf) { + aux_payload_buf = kvzalloc(length, GFP_KERNEL); + if (!aux_payload_buf) { err = -ENOMEM; goto out; } - nbytes = ksmbd_vfs_read(work, fp, length, &offset); + nbytes = ksmbd_vfs_read(work, fp, length, &offset, aux_payload_buf); if (nbytes < 0) { err = nbytes; goto out; } if ((nbytes == 0 && length != 0) || nbytes < mincount) { - kvfree(work->aux_payload_buf); - work->aux_payload_buf = NULL; + kvfree(aux_payload_buf); rsp->hdr.Status = STATUS_END_OF_FILE; smb2_set_err_rsp(work); ksmbd_fd_put(work, fp); @@ -6301,10 +6309,9 @@ int smb2_read(struct ksmbd_work *work) if (is_rdma_channel == true) { /* write data to the client using rdma channel */ remain_bytes = smb2_read_rdma_channel(work, req, - work->aux_payload_buf, + aux_payload_buf, nbytes); - kvfree(work->aux_payload_buf); - work->aux_payload_buf = NULL; + kvfree(aux_payload_buf); nbytes = 0; if (remain_bytes < 0) { @@ -6319,10 +6326,11 @@ int smb2_read(struct ksmbd_work *work) rsp->DataLength = cpu_to_le32(nbytes); rsp->DataRemaining = cpu_to_le32(remain_bytes); rsp->Flags = 0; - inc_rfc1001_len(work->response_buf, 16); - work->resp_hdr_sz = get_rfc1002_len(work->response_buf) + 4; - work->aux_payload_sz = nbytes; - inc_rfc1001_len(work->response_buf, nbytes); + err = ksmbd_iov_pin_rsp_read(work, (void *)rsp, + offsetof(struct smb2_read_rsp, Buffer), + aux_payload_buf, nbytes); + if (err) + goto out; ksmbd_fd_put(work, fp); return 0; @@ -6405,8 +6413,8 @@ static noinline int smb2_write_pipe(struct ksmbd_work *work) rsp->DataLength = cpu_to_le32(length); rsp->DataRemaining = 0; rsp->Reserved2 = 0; - inc_rfc1001_len(work->response_buf, 16); - return 0; + err = ksmbd_iov_pin_rsp(work, (void *)rsp, + offsetof(struct smb2_write_rsp, Buffer)); out: if (err) { rsp->hdr.Status = STATUS_INVALID_HANDLE; @@ -6562,7 +6570,9 @@ int smb2_write(struct ksmbd_work *work) rsp->DataLength = cpu_to_le32(nbytes); rsp->DataRemaining = 0; rsp->Reserved2 = 0; - inc_rfc1001_len(work->response_buf, 16); + err = ksmbd_iov_pin_rsp(work, rsp, offsetof(struct smb2_write_rsp, Buffer)); + if (err) + goto out; ksmbd_fd_put(work, fp); return 0; @@ -6609,15 +6619,11 @@ int smb2_flush(struct ksmbd_work *work) rsp->StructureSize = cpu_to_le16(4); rsp->Reserved = 0; - inc_rfc1001_len(work->response_buf, 4); - return 0; + return ksmbd_iov_pin_rsp(work, rsp, sizeof(struct smb2_flush_rsp)); out: - if (err) { - rsp->hdr.Status = STATUS_INVALID_HANDLE; - smb2_set_err_rsp(work); - } - + rsp->hdr.Status = STATUS_INVALID_HANDLE; + smb2_set_err_rsp(work); return err; } @@ -7071,8 +7077,6 @@ skip: goto out; } - init_smb2_rsp_hdr(work); - smb2_set_err_rsp(work); rsp->hdr.Status = STATUS_RANGE_NOT_LOCKED; kfree(smb_lock); @@ -7107,7 +7111,10 @@ skip: ksmbd_debug(SMB, "successful in taking lock\n"); rsp->hdr.Status = STATUS_SUCCESS; rsp->Reserved = 0; - inc_rfc1001_len(work->response_buf, 4); + err = ksmbd_iov_pin_rsp(work, rsp, sizeof(struct smb2_lock_rsp)); + if (err) + goto out; + ksmbd_fd_put(work, fp); return 0; @@ -7903,9 +7910,9 @@ dup_ext_out: rsp->Reserved = cpu_to_le16(0); rsp->Flags = cpu_to_le32(0); rsp->Reserved2 = cpu_to_le32(0); - inc_rfc1001_len(work->response_buf, 48 + nbytes); - - return 0; + ret = ksmbd_iov_pin_rsp(work, rsp, sizeof(struct smb2_ioctl_rsp) + nbytes); + if (!ret) + return ret; out: if (ret == -EACCES) @@ -8040,8 +8047,9 @@ static void smb20_oplock_break_ack(struct ksmbd_work *work) rsp->Reserved2 = 0; rsp->VolatileFid = volatile_id; rsp->PersistentFid = persistent_id; - inc_rfc1001_len(work->response_buf, 24); - return; + ret = ksmbd_iov_pin_rsp(work, rsp, sizeof(struct smb2_oplock_break)); + if (!ret) + return; err_out: opinfo->op_state = OPLOCK_STATE_NONE; @@ -8191,8 +8199,9 @@ static void smb21_lease_break_ack(struct ksmbd_work *work) memcpy(rsp->LeaseKey, req->LeaseKey, 16); rsp->LeaseState = lease_state; rsp->LeaseDuration = 0; - inc_rfc1001_len(work->response_buf, 36); - return; + ret = ksmbd_iov_pin_rsp(work, rsp, sizeof(struct smb2_lease_ack)); + if (!ret) + return; err_out: opinfo->op_state = OPLOCK_STATE_NONE; @@ -8330,43 +8339,19 @@ int smb2_check_sign_req(struct ksmbd_work *work) void smb2_set_sign_rsp(struct ksmbd_work *work) { struct smb2_hdr *hdr; - struct smb2_hdr *req_hdr; char signature[SMB2_HMACSHA256_SIZE]; - struct kvec iov[2]; - size_t len; + struct kvec *iov; int n_vec = 1; - hdr = smb2_get_msg(work->response_buf); - if (work->next_smb2_rsp_hdr_off) - hdr = ksmbd_resp_buf_next(work); - - req_hdr = ksmbd_req_buf_next(work); - - if (!work->next_smb2_rsp_hdr_off) { - len = get_rfc1002_len(work->response_buf); - if (req_hdr->NextCommand) - len = ALIGN(len, 8); - } else { - len = get_rfc1002_len(work->response_buf) - - work->next_smb2_rsp_hdr_off; - len = ALIGN(len, 8); - } - - if (req_hdr->NextCommand) - hdr->NextCommand = cpu_to_le32(len); - + hdr = ksmbd_resp_buf_curr(work); hdr->Flags |= SMB2_FLAGS_SIGNED; memset(hdr->Signature, 0, SMB2_SIGNATURE_SIZE); - iov[0].iov_base = (char *)&hdr->ProtocolId; - iov[0].iov_len = len; - - if (work->aux_payload_sz) { - iov[0].iov_len -= work->aux_payload_sz; - - iov[1].iov_base = work->aux_payload_buf; - iov[1].iov_len = work->aux_payload_sz; + if (hdr->Command == SMB2_READ) { + iov = &work->iov[work->iov_idx - 1]; n_vec++; + } else { + iov = &work->iov[work->iov_idx]; } if (!ksmbd_sign_smb2_pdu(work->conn, work->sess->sess_key, iov, n_vec, @@ -8442,29 +8427,14 @@ int smb3_check_sign_req(struct ksmbd_work *work) void smb3_set_sign_rsp(struct ksmbd_work *work) { struct ksmbd_conn *conn = work->conn; - struct smb2_hdr *req_hdr, *hdr; + struct smb2_hdr *hdr; struct channel *chann; char signature[SMB2_CMACAES_SIZE]; - struct kvec iov[2]; + struct kvec *iov; int n_vec = 1; - size_t len; char *signing_key; - hdr = smb2_get_msg(work->response_buf); - if (work->next_smb2_rsp_hdr_off) - hdr = ksmbd_resp_buf_next(work); - - req_hdr = ksmbd_req_buf_next(work); - - if (!work->next_smb2_rsp_hdr_off) { - len = get_rfc1002_len(work->response_buf); - if (req_hdr->NextCommand) - len = ALIGN(len, 8); - } else { - len = get_rfc1002_len(work->response_buf) - - work->next_smb2_rsp_hdr_off; - len = ALIGN(len, 8); - } + hdr = ksmbd_resp_buf_curr(work); if (conn->binding == false && le16_to_cpu(hdr->Command) == SMB2_SESSION_SETUP_HE) { @@ -8480,21 +8450,18 @@ void smb3_set_sign_rsp(struct ksmbd_work *work) if (!signing_key) return; - if (req_hdr->NextCommand) - hdr->NextCommand = cpu_to_le32(len); - hdr->Flags |= SMB2_FLAGS_SIGNED; memset(hdr->Signature, 0, SMB2_SIGNATURE_SIZE); - iov[0].iov_base = (char *)&hdr->ProtocolId; - iov[0].iov_len = len; - if (work->aux_payload_sz) { - iov[0].iov_len -= work->aux_payload_sz; - iov[1].iov_base = work->aux_payload_buf; - iov[1].iov_len = work->aux_payload_sz; + + if (hdr->Command == SMB2_READ) { + iov = &work->iov[work->iov_idx - 1]; n_vec++; + } else { + iov = &work->iov[work->iov_idx]; } - if (!ksmbd_sign_smb3_pdu(conn, signing_key, iov, n_vec, signature)) + if (!ksmbd_sign_smb3_pdu(conn, signing_key, iov, n_vec, + signature)) memcpy(hdr->Signature, signature, SMB2_SIGNATURE_SIZE); } @@ -8561,45 +8528,22 @@ static void fill_transform_hdr(void *tr_buf, char *old_buf, __le16 cipher_type) int smb3_encrypt_resp(struct ksmbd_work *work) { - char *buf = work->response_buf; - struct kvec iov[3]; + struct kvec *iov = work->iov; int rc = -ENOMEM; - int buf_size = 0, rq_nvec = 2 + (work->aux_payload_sz ? 1 : 0); - - if (ARRAY_SIZE(iov) < rq_nvec) - return -ENOMEM; + void *tr_buf; - work->tr_buf = kzalloc(sizeof(struct smb2_transform_hdr) + 4, GFP_KERNEL); - if (!work->tr_buf) + tr_buf = kzalloc(sizeof(struct smb2_transform_hdr) + 4, GFP_KERNEL); + if (!tr_buf) return rc; /* fill transform header */ - fill_transform_hdr(work->tr_buf, buf, work->conn->cipher_type); + fill_transform_hdr(tr_buf, work->response_buf, work->conn->cipher_type); - iov[0].iov_base = work->tr_buf; + iov[0].iov_base = tr_buf; iov[0].iov_len = sizeof(struct smb2_transform_hdr) + 4; - buf_size += iov[0].iov_len - 4; - - iov[1].iov_base = buf + 4; - iov[1].iov_len = get_rfc1002_len(buf); - if (work->aux_payload_sz) { - iov[1].iov_len = work->resp_hdr_sz - 4; - - iov[2].iov_base = work->aux_payload_buf; - iov[2].iov_len = work->aux_payload_sz; - buf_size += iov[2].iov_len; - } - buf_size += iov[1].iov_len; - work->resp_hdr_sz = iov[1].iov_len; + work->tr_buf = tr_buf; - rc = ksmbd_crypt_message(work, iov, rq_nvec, 1); - if (rc) - return rc; - - memmove(buf, iov[1].iov_base, iov[1].iov_len); - *(__be32 *)work->tr_buf = cpu_to_be32(buf_size); - - return rc; + return ksmbd_crypt_message(work, iov, work->iov_idx + 1, 1); } bool smb3_is_transform_hdr(void *buf) diff --git a/fs/smb/server/smb2pdu.h b/fs/smb/server/smb2pdu.h index 2767c08a534a..d12cfd3b0927 100644 --- a/fs/smb/server/smb2pdu.h +++ b/fs/smb/server/smb2pdu.h @@ -361,7 +361,7 @@ struct smb2_ea_info { __u8 Flags; __u8 EaNameLength; __le16 EaValueLength; - char name[1]; + char name[]; /* optionally followed by value */ } __packed; /* level 15 Query */ diff --git a/fs/smb/server/smb_common.c b/fs/smb/server/smb_common.c index c2b75d898852..e6ba1e9b8589 100644 --- a/fs/smb/server/smb_common.c +++ b/fs/smb/server/smb_common.c @@ -319,12 +319,6 @@ static int init_smb1_rsp_hdr(struct ksmbd_work *work) struct smb_hdr *rsp_hdr = (struct smb_hdr *)work->response_buf; struct smb_hdr *rcv_hdr = (struct smb_hdr *)work->request_buf; - /* - * Remove 4 byte direct TCP header. - */ - *(__be32 *)work->response_buf = - cpu_to_be32(sizeof(struct smb_hdr) - 4); - rsp_hdr->Command = SMB_COM_NEGOTIATE; *(__le32 *)rsp_hdr->Protocol = SMB1_PROTO_NUMBER; rsp_hdr->Flags = SMBFLG_RESPONSE; @@ -560,10 +554,11 @@ static int smb_handle_negotiate(struct ksmbd_work *work) ksmbd_debug(SMB, "Unsupported SMB1 protocol\n"); - /* Add 2 byte bcc and 2 byte DialectIndex. */ - inc_rfc1001_len(work->response_buf, 4); - neg_rsp->hdr.Status.CifsError = STATUS_SUCCESS; + if (ksmbd_iov_pin_rsp(work, (void *)neg_rsp, + sizeof(struct smb_negotiate_rsp) - 4)) + return -ENOMEM; + neg_rsp->hdr.Status.CifsError = STATUS_SUCCESS; neg_rsp->hdr.WordCount = 1; neg_rsp->DialectIndex = cpu_to_le16(work->conn->dialect); neg_rsp->ByteCount = 0; diff --git a/fs/smb/server/transport_rdma.c b/fs/smb/server/transport_rdma.c index c06efc020bd9..3b269e1f523a 100644 --- a/fs/smb/server/transport_rdma.c +++ b/fs/smb/server/transport_rdma.c @@ -1241,14 +1241,12 @@ static int smb_direct_writev(struct ksmbd_transport *t, //FIXME: skip RFC1002 header.. buflen -= 4; - iov[0].iov_base += 4; - iov[0].iov_len -= 4; remaining_data_length = buflen; ksmbd_debug(RDMA, "Sending smb (RDMA): smb_len=%u\n", buflen); smb_direct_send_ctx_init(st, &send_ctx, need_invalidate, remote_key); - start = i = 0; + start = i = 1; buflen = 0; while (true) { buflen += iov[i].iov_len; @@ -1366,24 +1364,35 @@ static int smb_direct_rdma_xmit(struct smb_direct_transport *t, LIST_HEAD(msg_list); char *desc_buf; int credits_needed; - unsigned int desc_buf_len; - size_t total_length = 0; + unsigned int desc_buf_len, desc_num = 0; if (t->status != SMB_DIRECT_CS_CONNECTED) return -ENOTCONN; + if (buf_len > t->max_rdma_rw_size) + return -EINVAL; + /* calculate needed credits */ credits_needed = 0; desc_buf = buf; for (i = 0; i < desc_len / sizeof(*desc); i++) { + if (!buf_len) + break; + desc_buf_len = le32_to_cpu(desc[i].length); + if (!desc_buf_len) + return -EINVAL; + + if (desc_buf_len > buf_len) { + desc_buf_len = buf_len; + desc[i].length = cpu_to_le32(desc_buf_len); + buf_len = 0; + } credits_needed += calc_rw_credits(t, desc_buf, desc_buf_len); desc_buf += desc_buf_len; - total_length += desc_buf_len; - if (desc_buf_len == 0 || total_length > buf_len || - total_length > t->max_rdma_rw_size) - return -EINVAL; + buf_len -= desc_buf_len; + desc_num++; } ksmbd_debug(RDMA, "RDMA %s, len %#x, needed credits %#x\n", @@ -1395,7 +1404,7 @@ static int smb_direct_rdma_xmit(struct smb_direct_transport *t, /* build rdma_rw_ctx for each descriptor */ desc_buf = buf; - for (i = 0; i < desc_len / sizeof(*desc); i++) { + for (i = 0; i < desc_num; i++) { msg = kzalloc(offsetof(struct smb_direct_rdma_rw_msg, sg_list) + sizeof(struct scatterlist) * SG_CHUNK_SIZE, GFP_KERNEL); if (!msg) { diff --git a/fs/smb/server/unicode.c b/fs/smb/server/unicode.c index 9ae676906ed3..393dd4a7432b 100644 --- a/fs/smb/server/unicode.c +++ b/fs/smb/server/unicode.c @@ -11,7 +11,6 @@ #include <asm/unaligned.h> #include "glob.h" #include "unicode.h" -#include "uniupr.h" #include "smb_common.h" /* diff --git a/fs/smb/server/unicode.h b/fs/smb/server/unicode.h index 076f6034a789..28c7c736f7bb 100644 --- a/fs/smb/server/unicode.h +++ b/fs/smb/server/unicode.h @@ -18,49 +18,14 @@ * This is a compressed table of upper and lower case conversion. * */ -#ifndef _CIFS_UNICODE_H -#define _CIFS_UNICODE_H +#ifndef _SMB_UNICODE_H +#define _SMB_UNICODE_H #include <asm/byteorder.h> #include <linux/types.h> #include <linux/nls.h> #include <linux/unicode.h> - -#define UNIUPR_NOLOWER /* Example to not expand lower case tables */ - -/* - * Windows maps these to the user defined 16 bit Unicode range since they are - * reserved symbols (along with \ and /), otherwise illegal to store - * in filenames in NTFS - */ -#define UNI_ASTERISK ((__u16)('*' + 0xF000)) -#define UNI_QUESTION ((__u16)('?' + 0xF000)) -#define UNI_COLON ((__u16)(':' + 0xF000)) -#define UNI_GRTRTHAN ((__u16)('>' + 0xF000)) -#define UNI_LESSTHAN ((__u16)('<' + 0xF000)) -#define UNI_PIPE ((__u16)('|' + 0xF000)) -#define UNI_SLASH ((__u16)('\\' + 0xF000)) - -/* Just define what we want from uniupr.h. We don't want to define the tables - * in each source file. - */ -#ifndef UNICASERANGE_DEFINED -struct UniCaseRange { - wchar_t start; - wchar_t end; - signed char *table; -}; -#endif /* UNICASERANGE_DEFINED */ - -#ifndef UNIUPR_NOUPPER -extern signed char SmbUniUpperTable[512]; -extern const struct UniCaseRange SmbUniUpperRange[]; -#endif /* UNIUPR_NOUPPER */ - -#ifndef UNIUPR_NOLOWER -extern signed char CifsUniLowerTable[512]; -extern const struct UniCaseRange CifsUniLowerRange[]; -#endif /* UNIUPR_NOLOWER */ +#include "../../nls/nls_ucs2_utils.h" #ifdef __KERNEL__ int smb_strtoUTF16(__le16 *to, const char *from, int len, @@ -73,286 +38,4 @@ int smbConvertToUTF16(__le16 *target, const char *source, int srclen, char *ksmbd_extract_sharename(struct unicode_map *um, const char *treename); #endif -/* - * UniStrcat: Concatenate the second string to the first - * - * Returns: - * Address of the first string - */ -static inline wchar_t *UniStrcat(wchar_t *ucs1, const wchar_t *ucs2) -{ - wchar_t *anchor = ucs1; /* save a pointer to start of ucs1 */ - - while (*ucs1++) - /*NULL*/; /* To end of first string */ - ucs1--; /* Return to the null */ - while ((*ucs1++ = *ucs2++)) - /*NULL*/; /* copy string 2 over */ - return anchor; -} - -/* - * UniStrchr: Find a character in a string - * - * Returns: - * Address of first occurrence of character in string - * or NULL if the character is not in the string - */ -static inline wchar_t *UniStrchr(const wchar_t *ucs, wchar_t uc) -{ - while ((*ucs != uc) && *ucs) - ucs++; - - if (*ucs == uc) - return (wchar_t *)ucs; - return NULL; -} - -/* - * UniStrcmp: Compare two strings - * - * Returns: - * < 0: First string is less than second - * = 0: Strings are equal - * > 0: First string is greater than second - */ -static inline int UniStrcmp(const wchar_t *ucs1, const wchar_t *ucs2) -{ - while ((*ucs1 == *ucs2) && *ucs1) { - ucs1++; - ucs2++; - } - return (int)*ucs1 - (int)*ucs2; -} - -/* - * UniStrcpy: Copy a string - */ -static inline wchar_t *UniStrcpy(wchar_t *ucs1, const wchar_t *ucs2) -{ - wchar_t *anchor = ucs1; /* save the start of result string */ - - while ((*ucs1++ = *ucs2++)) - /*NULL*/; - return anchor; -} - -/* - * UniStrlen: Return the length of a string (in 16 bit Unicode chars not bytes) - */ -static inline size_t UniStrlen(const wchar_t *ucs1) -{ - int i = 0; - - while (*ucs1++) - i++; - return i; -} - -/* - * UniStrnlen: Return the length (in 16 bit Unicode chars not bytes) of a - * string (length limited) - */ -static inline size_t UniStrnlen(const wchar_t *ucs1, int maxlen) -{ - int i = 0; - - while (*ucs1++) { - i++; - if (i >= maxlen) - break; - } - return i; -} - -/* - * UniStrncat: Concatenate length limited string - */ -static inline wchar_t *UniStrncat(wchar_t *ucs1, const wchar_t *ucs2, size_t n) -{ - wchar_t *anchor = ucs1; /* save pointer to string 1 */ - - while (*ucs1++) - /*NULL*/; - ucs1--; /* point to null terminator of s1 */ - while (n-- && (*ucs1 = *ucs2)) { /* copy s2 after s1 */ - ucs1++; - ucs2++; - } - *ucs1 = 0; /* Null terminate the result */ - return anchor; -} - -/* - * UniStrncmp: Compare length limited string - */ -static inline int UniStrncmp(const wchar_t *ucs1, const wchar_t *ucs2, size_t n) -{ - if (!n) - return 0; /* Null strings are equal */ - while ((*ucs1 == *ucs2) && *ucs1 && --n) { - ucs1++; - ucs2++; - } - return (int)*ucs1 - (int)*ucs2; -} - -/* - * UniStrncmp_le: Compare length limited string - native to little-endian - */ -static inline int -UniStrncmp_le(const wchar_t *ucs1, const wchar_t *ucs2, size_t n) -{ - if (!n) - return 0; /* Null strings are equal */ - while ((*ucs1 == __le16_to_cpu(*ucs2)) && *ucs1 && --n) { - ucs1++; - ucs2++; - } - return (int)*ucs1 - (int)__le16_to_cpu(*ucs2); -} - -/* - * UniStrncpy: Copy length limited string with pad - */ -static inline wchar_t *UniStrncpy(wchar_t *ucs1, const wchar_t *ucs2, size_t n) -{ - wchar_t *anchor = ucs1; - - while (n-- && *ucs2) /* Copy the strings */ - *ucs1++ = *ucs2++; - - n++; - while (n--) /* Pad with nulls */ - *ucs1++ = 0; - return anchor; -} - -/* - * UniStrncpy_le: Copy length limited string with pad to little-endian - */ -static inline wchar_t *UniStrncpy_le(wchar_t *ucs1, const wchar_t *ucs2, size_t n) -{ - wchar_t *anchor = ucs1; - - while (n-- && *ucs2) /* Copy the strings */ - *ucs1++ = __le16_to_cpu(*ucs2++); - - n++; - while (n--) /* Pad with nulls */ - *ucs1++ = 0; - return anchor; -} - -/* - * UniStrstr: Find a string in a string - * - * Returns: - * Address of first match found - * NULL if no matching string is found - */ -static inline wchar_t *UniStrstr(const wchar_t *ucs1, const wchar_t *ucs2) -{ - const wchar_t *anchor1 = ucs1; - const wchar_t *anchor2 = ucs2; - - while (*ucs1) { - if (*ucs1 == *ucs2) { - /* Partial match found */ - ucs1++; - ucs2++; - } else { - if (!*ucs2) /* Match found */ - return (wchar_t *)anchor1; - ucs1 = ++anchor1; /* No match */ - ucs2 = anchor2; - } - } - - if (!*ucs2) /* Both end together */ - return (wchar_t *)anchor1; /* Match found */ - return NULL; /* No match */ -} - -#ifndef UNIUPR_NOUPPER -/* - * UniToupper: Convert a unicode character to upper case - */ -static inline wchar_t UniToupper(register wchar_t uc) -{ - register const struct UniCaseRange *rp; - - if (uc < sizeof(SmbUniUpperTable)) { - /* Latin characters */ - return uc + SmbUniUpperTable[uc]; /* Use base tables */ - } - - rp = SmbUniUpperRange; /* Use range tables */ - while (rp->start) { - if (uc < rp->start) /* Before start of range */ - return uc; /* Uppercase = input */ - if (uc <= rp->end) /* In range */ - return uc + rp->table[uc - rp->start]; - rp++; /* Try next range */ - } - return uc; /* Past last range */ -} - -/* - * UniStrupr: Upper case a unicode string - */ -static inline __le16 *UniStrupr(register __le16 *upin) -{ - register __le16 *up; - - up = upin; - while (*up) { /* For all characters */ - *up = cpu_to_le16(UniToupper(le16_to_cpu(*up))); - up++; - } - return upin; /* Return input pointer */ -} -#endif /* UNIUPR_NOUPPER */ - -#ifndef UNIUPR_NOLOWER -/* - * UniTolower: Convert a unicode character to lower case - */ -static inline wchar_t UniTolower(register wchar_t uc) -{ - register const struct UniCaseRange *rp; - - if (uc < sizeof(CifsUniLowerTable)) { - /* Latin characters */ - return uc + CifsUniLowerTable[uc]; /* Use base tables */ - } - - rp = CifsUniLowerRange; /* Use range tables */ - while (rp->start) { - if (uc < rp->start) /* Before start of range */ - return uc; /* Uppercase = input */ - if (uc <= rp->end) /* In range */ - return uc + rp->table[uc - rp->start]; - rp++; /* Try next range */ - } - return uc; /* Past last range */ -} - -/* - * UniStrlwr: Lower case a unicode string - */ -static inline wchar_t *UniStrlwr(register wchar_t *upin) -{ - register wchar_t *up; - - up = upin; - while (*up) { /* For all characters */ - *up = UniTolower(*up); - up++; - } - return upin; /* Return input pointer */ -} - -#endif - -#endif /* _CIFS_UNICODE_H */ +#endif /* _SMB_UNICODE_H */ diff --git a/fs/smb/server/vfs.c b/fs/smb/server/vfs.c index 3d5d652153a5..b5a5e50fc9ca 100644 --- a/fs/smb/server/vfs.c +++ b/fs/smb/server/vfs.c @@ -367,15 +367,15 @@ out: * @fid: file id of open file * @count: read byte count * @pos: file pos + * @rbuf: read data buffer * * Return: number of read bytes on success, otherwise error */ int ksmbd_vfs_read(struct ksmbd_work *work, struct ksmbd_file *fp, size_t count, - loff_t *pos) + loff_t *pos, char *rbuf) { struct file *filp = fp->filp; ssize_t nbytes = 0; - char *rbuf = work->aux_payload_buf; struct inode *inode = file_inode(filp); if (S_ISDIR(inode->i_mode)) @@ -1659,7 +1659,8 @@ int ksmbd_vfs_fill_dentry_attrs(struct ksmbd_work *work, u64 time; int rc; - generic_fillattr(idmap, d_inode(dentry), ksmbd_kstat->kstat); + generic_fillattr(idmap, STATX_BASIC_STATS, d_inode(dentry), + ksmbd_kstat->kstat); time = ksmbd_UnixTimeToNT(ksmbd_kstat->kstat->ctime); ksmbd_kstat->create_time = time; diff --git a/fs/smb/server/vfs.h b/fs/smb/server/vfs.h index 72f9fb4b48d1..00968081856e 100644 --- a/fs/smb/server/vfs.h +++ b/fs/smb/server/vfs.h @@ -76,8 +76,8 @@ void ksmbd_vfs_query_maximal_access(struct mnt_idmap *idmap, struct dentry *dentry, __le32 *daccess); int ksmbd_vfs_create(struct ksmbd_work *work, const char *name, umode_t mode); int ksmbd_vfs_mkdir(struct ksmbd_work *work, const char *name, umode_t mode); -int ksmbd_vfs_read(struct ksmbd_work *work, struct ksmbd_file *fp, - size_t count, loff_t *pos); +int ksmbd_vfs_read(struct ksmbd_work *work, struct ksmbd_file *fp, size_t count, + loff_t *pos, char *rbuf); int ksmbd_vfs_write(struct ksmbd_work *work, struct ksmbd_file *fp, char *buf, size_t count, loff_t *pos, bool sync, ssize_t *written); diff --git a/fs/splice.c b/fs/splice.c index 0d3deeb3857e..d983d375ff11 100644 --- a/fs/splice.c +++ b/fs/splice.c @@ -119,17 +119,17 @@ static void page_cache_pipe_buf_release(struct pipe_inode_info *pipe, static int page_cache_pipe_buf_confirm(struct pipe_inode_info *pipe, struct pipe_buffer *buf) { - struct page *page = buf->page; + struct folio *folio = page_folio(buf->page); int err; - if (!PageUptodate(page)) { - lock_page(page); + if (!folio_test_uptodate(folio)) { + folio_lock(folio); /* - * Page got truncated/unhashed. This will cause a 0-byte + * Folio got truncated/unhashed. This will cause a 0-byte * splice, if this is the first page. */ - if (!page->mapping) { + if (!folio->mapping) { err = -ENODATA; goto error; } @@ -137,20 +137,18 @@ static int page_cache_pipe_buf_confirm(struct pipe_inode_info *pipe, /* * Uh oh, read-error from disk. */ - if (!PageUptodate(page)) { + if (!folio_test_uptodate(folio)) { err = -EIO; goto error; } - /* - * Page is ok afterall, we are done. - */ - unlock_page(page); + /* Folio is ok after all, we are done */ + folio_unlock(folio); } return 0; error: - unlock_page(page); + folio_unlock(folio); return err; } @@ -1268,10 +1266,8 @@ long do_splice(struct file *in, loff_t *off_in, struct file *out, if ((in->f_flags | out->f_flags) & O_NONBLOCK) flags |= SPLICE_F_NONBLOCK; - return splice_pipe_to_pipe(ipipe, opipe, len, flags); - } - - if (ipipe) { + ret = splice_pipe_to_pipe(ipipe, opipe, len, flags); + } else if (ipipe) { if (off_in) return -ESPIPE; if (off_out) { @@ -1296,18 +1292,11 @@ long do_splice(struct file *in, loff_t *off_in, struct file *out, ret = do_splice_from(ipipe, out, &offset, len, flags); file_end_write(out); - if (ret > 0) - fsnotify_modify(out); - if (!off_out) out->f_pos = offset; else *off_out = offset; - - return ret; - } - - if (opipe) { + } else if (opipe) { if (off_out) return -ESPIPE; if (off_in) { @@ -1323,18 +1312,25 @@ long do_splice(struct file *in, loff_t *off_in, struct file *out, ret = splice_file_to_pipe(in, opipe, &offset, len, flags); - if (ret > 0) - fsnotify_access(in); - if (!off_in) in->f_pos = offset; else *off_in = offset; + } else { + ret = -EINVAL; + } - return ret; + if (ret > 0) { + /* + * Generate modify out before access in: + * do_splice_from() may've already sent modify out, + * and this ensures the events get merged. + */ + fsnotify_modify(out); + fsnotify_access(in); } - return -EINVAL; + return ret; } static long __do_splice(struct file *in, loff_t __user *off_in, @@ -1463,6 +1459,9 @@ static long vmsplice_to_user(struct file *file, struct iov_iter *iter, pipe_unlock(pipe); } + if (ret > 0) + fsnotify_access(file); + return ret; } @@ -1492,8 +1491,10 @@ static long vmsplice_to_pipe(struct file *file, struct iov_iter *iter, if (!ret) ret = iter_to_pipe(iter, pipe, buf_flag); pipe_unlock(pipe); - if (ret > 0) + if (ret > 0) { wakeup_pipe_readers(pipe); + fsnotify_modify(file); + } return ret; } @@ -1927,6 +1928,11 @@ long do_tee(struct file *in, struct file *out, size_t len, unsigned int flags) } } + if (ret > 0) { + fsnotify_access(in); + fsnotify_modify(out); + } + return ret; } diff --git a/fs/squashfs/inode.c b/fs/squashfs/inode.c index 24463145b351..c6e626b00546 100644 --- a/fs/squashfs/inode.c +++ b/fs/squashfs/inode.c @@ -61,7 +61,7 @@ static int squashfs_new_inode(struct super_block *sb, struct inode *inode, inode->i_ino = le32_to_cpu(sqsh_ino->inode_number); inode->i_mtime.tv_sec = le32_to_cpu(sqsh_ino->mtime); inode->i_atime.tv_sec = inode->i_mtime.tv_sec; - inode->i_ctime.tv_sec = inode->i_mtime.tv_sec; + inode_set_ctime(inode, inode->i_mtime.tv_sec, 0); inode->i_mode = le16_to_cpu(sqsh_ino->mode); inode->i_size = 0; diff --git a/fs/stack.c b/fs/stack.c index c9830924eb12..b5e01bdb5f5f 100644 --- a/fs/stack.c +++ b/fs/stack.c @@ -68,7 +68,7 @@ void fsstack_copy_attr_all(struct inode *dest, const struct inode *src) dest->i_rdev = src->i_rdev; dest->i_atime = src->i_atime; dest->i_mtime = src->i_mtime; - dest->i_ctime = src->i_ctime; + inode_set_ctime_to_ts(dest, inode_get_ctime(src)); dest->i_blkbits = src->i_blkbits; dest->i_flags = src->i_flags; set_nlink(dest, src->i_nlink); diff --git a/fs/stat.c b/fs/stat.c index 7c238da22ef0..136711ae72fb 100644 --- a/fs/stat.c +++ b/fs/stat.c @@ -27,10 +27,42 @@ #include "mount.h" /** + * fill_mg_cmtime - Fill in the mtime and ctime and flag ctime as QUERIED + * @stat: where to store the resulting values + * @request_mask: STATX_* values requested + * @inode: inode from which to grab the c/mtime + * + * Given @inode, grab the ctime and mtime out if it and store the result + * in @stat. When fetching the value, flag it as queried so the next write + * will use a fine-grained timestamp. + */ +void fill_mg_cmtime(struct kstat *stat, u32 request_mask, struct inode *inode) +{ + atomic_long_t *pnsec = (atomic_long_t *)&inode->__i_ctime.tv_nsec; + + /* If neither time was requested, then don't report them */ + if (!(request_mask & (STATX_CTIME|STATX_MTIME))) { + stat->result_mask &= ~(STATX_CTIME|STATX_MTIME); + return; + } + + stat->mtime = inode->i_mtime; + stat->ctime.tv_sec = inode->__i_ctime.tv_sec; + /* + * Atomically set the QUERIED flag and fetch the new value with + * the flag masked off. + */ + stat->ctime.tv_nsec = atomic_long_fetch_or(I_CTIME_QUERIED, pnsec) & + ~I_CTIME_QUERIED; +} +EXPORT_SYMBOL(fill_mg_cmtime); + +/** * generic_fillattr - Fill in the basic attributes from the inode struct - * @idmap: idmap of the mount the inode was found from - * @inode: Inode to use as the source - * @stat: Where to fill in the attributes + * @idmap: idmap of the mount the inode was found from + * @request_mask: statx request_mask + * @inode: Inode to use as the source + * @stat: Where to fill in the attributes * * Fill in the basic attributes in the kstat structure from data that's to be * found on the VFS inode structure. This is the default if no getattr inode @@ -42,8 +74,8 @@ * uid and gid filds. On non-idmapped mounts or if permission checking is to be * performed on the raw inode simply passs @nop_mnt_idmap. */ -void generic_fillattr(struct mnt_idmap *idmap, struct inode *inode, - struct kstat *stat) +void generic_fillattr(struct mnt_idmap *idmap, u32 request_mask, + struct inode *inode, struct kstat *stat) { vfsuid_t vfsuid = i_uid_into_vfsuid(idmap, inode); vfsgid_t vfsgid = i_gid_into_vfsgid(idmap, inode); @@ -57,10 +89,22 @@ void generic_fillattr(struct mnt_idmap *idmap, struct inode *inode, stat->rdev = inode->i_rdev; stat->size = i_size_read(inode); stat->atime = inode->i_atime; - stat->mtime = inode->i_mtime; - stat->ctime = inode->i_ctime; + + if (is_mgtime(inode)) { + fill_mg_cmtime(stat, request_mask, inode); + } else { + stat->mtime = inode->i_mtime; + stat->ctime = inode_get_ctime(inode); + } + stat->blksize = i_blocksize(inode); stat->blocks = inode->i_blocks; + + if ((request_mask & STATX_CHANGE_COOKIE) && IS_I_VERSION(inode)) { + stat->result_mask |= STATX_CHANGE_COOKIE; + stat->change_cookie = inode_query_iversion(inode); + } + } EXPORT_SYMBOL(generic_fillattr); @@ -123,17 +167,12 @@ int vfs_getattr_nosec(const struct path *path, struct kstat *stat, stat->attributes_mask |= (STATX_ATTR_AUTOMOUNT | STATX_ATTR_DAX); - if ((request_mask & STATX_CHANGE_COOKIE) && IS_I_VERSION(inode)) { - stat->result_mask |= STATX_CHANGE_COOKIE; - stat->change_cookie = inode_query_iversion(inode); - } - idmap = mnt_idmap(path->mnt); if (inode->i_op->getattr) return inode->i_op->getattr(idmap, path, stat, request_mask, query_flags); - generic_fillattr(idmap, inode, stat); + generic_fillattr(idmap, request_mask, inode, stat); return 0; } EXPORT_SYMBOL(vfs_getattr_nosec); diff --git a/fs/super.c b/fs/super.c index e781226e2880..2d762ce67f6e 100644 --- a/fs/super.c +++ b/fs/super.c @@ -39,7 +39,7 @@ #include <uapi/linux/mount.h> #include "internal.h" -static int thaw_super_locked(struct super_block *sb); +static int thaw_super_locked(struct super_block *sb, enum freeze_holder who); static LIST_HEAD(super_blocks); static DEFINE_SPINLOCK(sb_lock); @@ -50,6 +50,130 @@ static char *sb_writers_name[SB_FREEZE_LEVELS] = { "sb_internal", }; +static inline void __super_lock(struct super_block *sb, bool excl) +{ + if (excl) + down_write(&sb->s_umount); + else + down_read(&sb->s_umount); +} + +static inline void super_unlock(struct super_block *sb, bool excl) +{ + if (excl) + up_write(&sb->s_umount); + else + up_read(&sb->s_umount); +} + +static inline void __super_lock_excl(struct super_block *sb) +{ + __super_lock(sb, true); +} + +static inline void super_unlock_excl(struct super_block *sb) +{ + super_unlock(sb, true); +} + +static inline void super_unlock_shared(struct super_block *sb) +{ + super_unlock(sb, false); +} + +static inline bool wait_born(struct super_block *sb) +{ + unsigned int flags; + + /* + * Pairs with smp_store_release() in super_wake() and ensures + * that we see SB_BORN or SB_DYING after we're woken. + */ + flags = smp_load_acquire(&sb->s_flags); + return flags & (SB_BORN | SB_DYING); +} + +/** + * super_lock - wait for superblock to become ready and lock it + * @sb: superblock to wait for + * @excl: whether exclusive access is required + * + * If the superblock has neither passed through vfs_get_tree() or + * generic_shutdown_super() yet wait for it to happen. Either superblock + * creation will succeed and SB_BORN is set by vfs_get_tree() or we're + * woken and we'll see SB_DYING. + * + * The caller must have acquired a temporary reference on @sb->s_count. + * + * Return: This returns true if SB_BORN was set, false if SB_DYING was + * set. The function acquires s_umount and returns with it held. + */ +static __must_check bool super_lock(struct super_block *sb, bool excl) +{ + + lockdep_assert_not_held(&sb->s_umount); + +relock: + __super_lock(sb, excl); + + /* + * Has gone through generic_shutdown_super() in the meantime. + * @sb->s_root is NULL and @sb->s_active is 0. No one needs to + * grab a reference to this. Tell them so. + */ + if (sb->s_flags & SB_DYING) + return false; + + /* Has called ->get_tree() successfully. */ + if (sb->s_flags & SB_BORN) + return true; + + super_unlock(sb, excl); + + /* wait until the superblock is ready or dying */ + wait_var_event(&sb->s_flags, wait_born(sb)); + + /* + * Neither SB_BORN nor SB_DYING are ever unset so we never loop. + * Just reacquire @sb->s_umount for the caller. + */ + goto relock; +} + +/* wait and acquire read-side of @sb->s_umount */ +static inline bool super_lock_shared(struct super_block *sb) +{ + return super_lock(sb, false); +} + +/* wait and acquire write-side of @sb->s_umount */ +static inline bool super_lock_excl(struct super_block *sb) +{ + return super_lock(sb, true); +} + +/* wake waiters */ +#define SUPER_WAKE_FLAGS (SB_BORN | SB_DYING | SB_DEAD) +static void super_wake(struct super_block *sb, unsigned int flag) +{ + WARN_ON_ONCE((flag & ~SUPER_WAKE_FLAGS)); + WARN_ON_ONCE(hweight32(flag & SUPER_WAKE_FLAGS) > 1); + + /* + * Pairs with smp_load_acquire() in super_lock() to make sure + * all initializations in the superblock are seen by the user + * seeing SB_BORN sent. + */ + smp_store_release(&sb->s_flags, sb->s_flags | flag); + /* + * Pairs with the barrier in prepare_to_wait_event() to make sure + * ___wait_var_event() either sees SB_BORN set or + * waitqueue_active() check in wake_up_var() sees the waiter. + */ + smp_mb(); + wake_up_var(&sb->s_flags); +} + /* * One thing we have to be careful of with a per-sb shrinker is that we don't * drop the last active reference to the superblock from within the shrinker. @@ -76,7 +200,7 @@ static unsigned long super_cache_scan(struct shrinker *shrink, if (!(sc->gfp_mask & __GFP_FS)) return SHRINK_STOP; - if (!trylock_super(sb)) + if (!super_trylock_shared(sb)) return SHRINK_STOP; if (sb->s_op->nr_cached_objects) @@ -110,7 +234,7 @@ static unsigned long super_cache_scan(struct shrinker *shrink, freed += sb->s_op->free_cached_objects(sb, sc); } - up_read(&sb->s_umount); + super_unlock_shared(sb); return freed; } @@ -123,17 +247,17 @@ static unsigned long super_cache_count(struct shrinker *shrink, sb = container_of(shrink, struct super_block, s_shrink); /* - * We don't call trylock_super() here as it is a scalability bottleneck, - * so we're exposed to partial setup state. The shrinker rwsem does not - * protect filesystem operations backing list_lru_shrink_count() or - * s_op->nr_cached_objects(). Counts can change between - * super_cache_count and super_cache_scan, so we really don't need locks - * here. + * We don't call super_trylock_shared() here as it is a scalability + * bottleneck, so we're exposed to partial setup state. The shrinker + * rwsem does not protect filesystem operations backing + * list_lru_shrink_count() or s_op->nr_cached_objects(). Counts can + * change between super_cache_count and super_cache_scan, so we really + * don't need locks here. * * However, if we are currently mounting the superblock, the underlying * filesystem might be in a state of partial construction and hence it - * is dangerous to access it. trylock_super() uses a SB_BORN check to - * avoid this situation, so do the same here. The memory barrier is + * is dangerous to access it. super_trylock_shared() uses a SB_BORN check + * to avoid this situation, so do the same here. The memory barrier is * matched with the one in mount_fs() as we don't hold locks here. */ if (!(sb->s_flags & SB_BORN)) @@ -176,7 +300,7 @@ static void destroy_unused_super(struct super_block *s) { if (!s) return; - up_write(&s->s_umount); + super_unlock_excl(s); list_lru_destroy(&s->s_dentry_lru); list_lru_destroy(&s->s_inode_lru); security_sb_free(s); @@ -310,6 +434,33 @@ void put_super(struct super_block *sb) spin_unlock(&sb_lock); } +static void kill_super_notify(struct super_block *sb) +{ + lockdep_assert_not_held(&sb->s_umount); + + /* already notified earlier */ + if (sb->s_flags & SB_DEAD) + return; + + /* + * Remove it from @fs_supers so it isn't found by new + * sget{_fc}() walkers anymore. Any concurrent mounter still + * managing to grab a temporary reference is guaranteed to + * already see SB_DYING and will wait until we notify them about + * SB_DEAD. + */ + spin_lock(&sb_lock); + hlist_del_init(&sb->s_instances); + spin_unlock(&sb_lock); + + /* + * Let concurrent mounts know that this thing is really dead. + * We don't need @sb->s_umount here as every concurrent caller + * will see SB_DYING and either discard the superblock or wait + * for SB_DEAD. + */ + super_wake(sb, SB_DEAD); +} /** * deactivate_locked_super - drop an active reference to superblock @@ -329,6 +480,8 @@ void deactivate_locked_super(struct super_block *s) unregister_shrinker(&s->s_shrink); fs->kill_sb(s); + kill_super_notify(s); + /* * Since list_lru_destroy() may sleep, we cannot call it from * put_super(), where we hold the sb_lock. Therefore we destroy @@ -340,7 +493,7 @@ void deactivate_locked_super(struct super_block *s) put_filesystem(fs); put_super(s); } else { - up_write(&s->s_umount); + super_unlock_excl(s); } } @@ -357,7 +510,7 @@ EXPORT_SYMBOL(deactivate_locked_super); void deactivate_super(struct super_block *s) { if (!atomic_add_unless(&s->s_active, -1, 1)) { - down_write(&s->s_umount); + __super_lock_excl(s); deactivate_locked_super(s); } } @@ -379,20 +532,61 @@ EXPORT_SYMBOL(deactivate_super); */ static int grab_super(struct super_block *s) __releases(sb_lock) { + bool born; + s->s_count++; spin_unlock(&sb_lock); - down_write(&s->s_umount); - if ((s->s_flags & SB_BORN) && atomic_inc_not_zero(&s->s_active)) { + born = super_lock_excl(s); + if (born && atomic_inc_not_zero(&s->s_active)) { put_super(s); return 1; } - up_write(&s->s_umount); + super_unlock_excl(s); put_super(s); return 0; } +static inline bool wait_dead(struct super_block *sb) +{ + unsigned int flags; + + /* + * Pairs with memory barrier in super_wake() and ensures + * that we see SB_DEAD after we're woken. + */ + flags = smp_load_acquire(&sb->s_flags); + return flags & SB_DEAD; +} + +/** + * grab_super_dead - acquire an active reference to a superblock + * @sb: superblock to acquire + * + * Acquire a temporary reference on a superblock and try to trade it for + * an active reference. This is used in sget{_fc}() to wait for a + * superblock to either become SB_BORN or for it to pass through + * sb->kill() and be marked as SB_DEAD. + * + * Return: This returns true if an active reference could be acquired, + * false if not. + */ +static bool grab_super_dead(struct super_block *sb) +{ + + sb->s_count++; + if (grab_super(sb)) { + put_super(sb); + lockdep_assert_held(&sb->s_umount); + return true; + } + wait_var_event(&sb->s_flags, wait_dead(sb)); + lockdep_assert_not_held(&sb->s_umount); + put_super(sb); + return false; +} + /* - * trylock_super - try to grab ->s_umount shared + * super_trylock_shared - try to grab ->s_umount shared * @sb: reference we are trying to grab * * Try to prevent fs shutdown. This is used in places where we @@ -408,13 +602,13 @@ static int grab_super(struct super_block *s) __releases(sb_lock) * of down_read(). There's a couple of places that are OK with that, but * it's very much not a general-purpose interface. */ -bool trylock_super(struct super_block *sb) +bool super_trylock_shared(struct super_block *sb) { if (down_read_trylock(&sb->s_umount)) { - if (!hlist_unhashed(&sb->s_instances) && - sb->s_root && (sb->s_flags & SB_BORN)) + if (!(sb->s_flags & SB_DYING) && sb->s_root && + (sb->s_flags & SB_BORN)) return true; - up_read(&sb->s_umount); + super_unlock_shared(sb); } return false; @@ -439,13 +633,13 @@ bool trylock_super(struct super_block *sb) void retire_super(struct super_block *sb) { WARN_ON(!sb->s_bdev); - down_write(&sb->s_umount); + __super_lock_excl(sb); if (sb->s_iflags & SB_I_PERSB_BDI) { bdi_unregister(sb->s_bdi); sb->s_iflags &= ~SB_I_PERSB_BDI; } sb->s_iflags |= SB_I_RETIRED; - up_write(&sb->s_umount); + super_unlock_excl(sb); } EXPORT_SYMBOL(retire_super); @@ -517,11 +711,17 @@ void generic_shutdown_super(struct super_block *sb) spin_unlock(&sb->s_inode_list_lock); } } - spin_lock(&sb_lock); - /* should be initialized for __put_super_and_need_restart() */ - hlist_del_init(&sb->s_instances); - spin_unlock(&sb_lock); - up_write(&sb->s_umount); + /* + * Broadcast to everyone that grabbed a temporary reference to this + * superblock before we removed it from @fs_supers that the superblock + * is dying. Every walker of @fs_supers outside of sget{_fc}() will now + * discard this superblock and treat it as dead. + * + * We leave the superblock on @fs_supers so it can be found by + * sget{_fc}() until we passed sb->kill_sb(). + */ + super_wake(sb, SB_DYING); + super_unlock_excl(sb); if (sb->s_bdi != &noop_backing_dev_info) { if (sb->s_iflags & SB_I_PERSB_BDI) bdi_unregister(sb->s_bdi); @@ -546,17 +746,31 @@ bool mount_capable(struct fs_context *fc) * @test: Comparison callback * @set: Setup callback * - * Find or create a superblock using the parameters stored in the filesystem - * context and the two callback functions. + * Create a new superblock or find an existing one. + * + * The @test callback is used to find a matching existing superblock. + * Whether or not the requested parameters in @fc are taken into account + * is specific to the @test callback that is used. They may even be + * completely ignored. + * + * If an extant superblock is matched, it will be returned unless: + * + * (1) the namespace the filesystem context @fc and the extant + * superblock's namespace differ + * + * (2) the filesystem context @fc has requested that reusing an extant + * superblock is not allowed * - * If an extant superblock is matched, then that will be returned with an - * elevated reference count that the caller must transfer or discard. + * In both cases EBUSY will be returned. * * If no match is made, a new superblock will be allocated and basic - * initialisation will be performed (s_type, s_fs_info and s_id will be set and - * the set() callback will be invoked), the superblock will be published and it - * will be returned in a partially constructed state with SB_BORN and SB_ACTIVE - * as yet unset. + * initialisation will be performed (s_type, s_fs_info and s_id will be + * set and the @set callback will be invoked), the superblock will be + * published and it will be returned in a partially constructed state + * with SB_BORN and SB_ACTIVE as yet unset. + * + * Return: On success, an extant or newly created superblock is + * returned. On failure an error pointer is returned. */ struct super_block *sget_fc(struct fs_context *fc, int (*test)(struct super_block *, struct fs_context *), @@ -595,6 +809,11 @@ retry: s->s_type = fc->fs_type; s->s_iflags |= fc->s_iflags; strscpy(s->s_id, s->s_type->name, sizeof(s->s_id)); + /* + * Make the superblock visible on @super_blocks and @fs_supers. + * It's in a nascent state and users should wait on SB_BORN or + * SB_DYING to be set. + */ list_add_tail(&s->s_list, &super_blocks); hlist_add_head(&s->s_instances, &s->s_type->fs_supers); spin_unlock(&sb_lock); @@ -603,12 +822,16 @@ retry: return s; share_extant_sb: - if (user_ns != old->s_user_ns) { + if (user_ns != old->s_user_ns || fc->exclusive) { spin_unlock(&sb_lock); destroy_unused_super(s); + if (fc->exclusive) + warnfc(fc, "reusing existing filesystem not allowed"); + else + warnfc(fc, "reusing existing filesystem in another namespace not allowed"); return ERR_PTR(-EBUSY); } - if (!grab_super(old)) + if (!grab_super_dead(old)) goto retry; destroy_unused_super(s); return old; @@ -652,7 +875,7 @@ retry: destroy_unused_super(s); return ERR_PTR(-EBUSY); } - if (!grab_super(old)) + if (!grab_super_dead(old)) goto retry; destroy_unused_super(s); return old; @@ -685,7 +908,7 @@ EXPORT_SYMBOL(sget); void drop_super(struct super_block *sb) { - up_read(&sb->s_umount); + super_unlock_shared(sb); put_super(sb); } @@ -693,7 +916,7 @@ EXPORT_SYMBOL(drop_super); void drop_super_exclusive(struct super_block *sb) { - up_write(&sb->s_umount); + super_unlock_excl(sb); put_super(sb); } EXPORT_SYMBOL(drop_super_exclusive); @@ -704,7 +927,8 @@ static void __iterate_supers(void (*f)(struct super_block *)) spin_lock(&sb_lock); list_for_each_entry(sb, &super_blocks, s_list) { - if (hlist_unhashed(&sb->s_instances)) + /* Pairs with memory marrier in super_wake(). */ + if (smp_load_acquire(&sb->s_flags) & SB_DYING) continue; sb->s_count++; spin_unlock(&sb_lock); @@ -734,15 +958,15 @@ void iterate_supers(void (*f)(struct super_block *, void *), void *arg) spin_lock(&sb_lock); list_for_each_entry(sb, &super_blocks, s_list) { - if (hlist_unhashed(&sb->s_instances)) - continue; + bool born; + sb->s_count++; spin_unlock(&sb_lock); - down_read(&sb->s_umount); - if (sb->s_root && (sb->s_flags & SB_BORN)) + born = super_lock_shared(sb); + if (born && sb->s_root) f(sb, arg); - up_read(&sb->s_umount); + super_unlock_shared(sb); spin_lock(&sb_lock); if (p) @@ -770,13 +994,15 @@ void iterate_supers_type(struct file_system_type *type, spin_lock(&sb_lock); hlist_for_each_entry(sb, &type->fs_supers, s_instances) { + bool born; + sb->s_count++; spin_unlock(&sb_lock); - down_read(&sb->s_umount); - if (sb->s_root && (sb->s_flags & SB_BORN)) + born = super_lock_shared(sb); + if (born && sb->s_root) f(sb, arg); - up_read(&sb->s_umount); + super_unlock_shared(sb); spin_lock(&sb_lock); if (p) @@ -791,43 +1017,6 @@ void iterate_supers_type(struct file_system_type *type, EXPORT_SYMBOL(iterate_supers_type); /** - * get_super - get the superblock of a device - * @bdev: device to get the superblock for - * - * Scans the superblock list and finds the superblock of the file system - * mounted on the device given. %NULL is returned if no match is found. - */ -struct super_block *get_super(struct block_device *bdev) -{ - struct super_block *sb; - - if (!bdev) - return NULL; - - spin_lock(&sb_lock); -rescan: - list_for_each_entry(sb, &super_blocks, s_list) { - if (hlist_unhashed(&sb->s_instances)) - continue; - if (sb->s_bdev == bdev) { - sb->s_count++; - spin_unlock(&sb_lock); - down_read(&sb->s_umount); - /* still alive? */ - if (sb->s_root && (sb->s_flags & SB_BORN)) - return sb; - up_read(&sb->s_umount); - /* nope, got unmounted */ - spin_lock(&sb_lock); - __put_super(sb); - goto rescan; - } - } - spin_unlock(&sb_lock); - return NULL; -} - -/** * get_active_super - get an active reference to the superblock of a device * @bdev: device to get the superblock for * @@ -842,15 +1031,12 @@ struct super_block *get_active_super(struct block_device *bdev) if (!bdev) return NULL; -restart: spin_lock(&sb_lock); list_for_each_entry(sb, &super_blocks, s_list) { - if (hlist_unhashed(&sb->s_instances)) - continue; if (sb->s_bdev == bdev) { if (!grab_super(sb)) - goto restart; - up_write(&sb->s_umount); + return NULL; + super_unlock_excl(sb); return sb; } } @@ -863,28 +1049,21 @@ struct super_block *user_get_super(dev_t dev, bool excl) struct super_block *sb; spin_lock(&sb_lock); -rescan: list_for_each_entry(sb, &super_blocks, s_list) { - if (hlist_unhashed(&sb->s_instances)) - continue; if (sb->s_dev == dev) { + bool born; + sb->s_count++; spin_unlock(&sb_lock); - if (excl) - down_write(&sb->s_umount); - else - down_read(&sb->s_umount); /* still alive? */ - if (sb->s_root && (sb->s_flags & SB_BORN)) + born = super_lock(sb, excl); + if (born && sb->s_root) return sb; - if (excl) - up_write(&sb->s_umount); - else - up_read(&sb->s_umount); + super_unlock(sb, excl); /* nope, got unmounted */ spin_lock(&sb_lock); __put_super(sb); - goto rescan; + break; } } spin_unlock(&sb_lock); @@ -926,9 +1105,9 @@ int reconfigure_super(struct fs_context *fc) if (remount_ro) { if (!hlist_empty(&sb->s_pins)) { - up_write(&sb->s_umount); + super_unlock_excl(sb); group_pin_kill(&sb->s_pins); - down_write(&sb->s_umount); + __super_lock_excl(sb); if (!sb->s_root) return 0; if (sb->s_writers.frozen != SB_UNFROZEN) @@ -991,9 +1170,9 @@ cancel_readonly: static void do_emergency_remount_callback(struct super_block *sb) { - down_write(&sb->s_umount); - if (sb->s_root && sb->s_bdev && (sb->s_flags & SB_BORN) && - !sb_rdonly(sb)) { + bool born = super_lock_excl(sb); + + if (born && sb->s_root && sb->s_bdev && !sb_rdonly(sb)) { struct fs_context *fc; fc = fs_context_for_reconfigure(sb->s_root, @@ -1004,7 +1183,7 @@ static void do_emergency_remount_callback(struct super_block *sb) put_fs_context(fc); } } - up_write(&sb->s_umount); + super_unlock_excl(sb); } static void do_emergency_remount(struct work_struct *work) @@ -1027,12 +1206,15 @@ void emergency_remount(void) static void do_thaw_all_callback(struct super_block *sb) { - down_write(&sb->s_umount); - if (sb->s_root && sb->s_flags & SB_BORN) { - emergency_thaw_bdev(sb); - thaw_super_locked(sb); + bool born = super_lock_excl(sb); + + if (born && sb->s_root) { + if (IS_ENABLED(CONFIG_BLOCK)) + while (sb->s_bdev && !thaw_bdev(sb->s_bdev)) + pr_warn("Emergency Thaw on %pg\n", sb->s_bdev); + thaw_super_locked(sb, FREEZE_HOLDER_USERSPACE); } else { - up_write(&sb->s_umount); + super_unlock_excl(sb); } } @@ -1108,6 +1290,7 @@ void kill_anon_super(struct super_block *sb) { dev_t dev = sb->s_dev; generic_shutdown_super(sb); + kill_super_notify(sb); free_anon_bdev(dev); } EXPORT_SYMBOL(kill_anon_super); @@ -1136,7 +1319,7 @@ static int test_single_super(struct super_block *s, struct fs_context *fc) return 1; } -static int vfs_get_super(struct fs_context *fc, bool reconf, +static int vfs_get_super(struct fs_context *fc, int (*test)(struct super_block *, struct fs_context *), int (*fill_super)(struct super_block *sb, struct fs_context *fc)) @@ -1154,19 +1337,9 @@ static int vfs_get_super(struct fs_context *fc, bool reconf, goto error; sb->s_flags |= SB_ACTIVE; - fc->root = dget(sb->s_root); - } else { - fc->root = dget(sb->s_root); - if (reconf) { - err = reconfigure_super(fc); - if (err < 0) { - dput(fc->root); - fc->root = NULL; - goto error; - } - } } + fc->root = dget(sb->s_root); return 0; error: @@ -1178,7 +1351,7 @@ int get_tree_nodev(struct fs_context *fc, int (*fill_super)(struct super_block *sb, struct fs_context *fc)) { - return vfs_get_super(fc, false, NULL, fill_super); + return vfs_get_super(fc, NULL, fill_super); } EXPORT_SYMBOL(get_tree_nodev); @@ -1186,66 +1359,175 @@ int get_tree_single(struct fs_context *fc, int (*fill_super)(struct super_block *sb, struct fs_context *fc)) { - return vfs_get_super(fc, false, test_single_super, fill_super); + return vfs_get_super(fc, test_single_super, fill_super); } EXPORT_SYMBOL(get_tree_single); -int get_tree_single_reconf(struct fs_context *fc, - int (*fill_super)(struct super_block *sb, - struct fs_context *fc)) -{ - return vfs_get_super(fc, true, test_single_super, fill_super); -} -EXPORT_SYMBOL(get_tree_single_reconf); - int get_tree_keyed(struct fs_context *fc, int (*fill_super)(struct super_block *sb, struct fs_context *fc), void *key) { fc->s_fs_info = key; - return vfs_get_super(fc, false, test_keyed_super, fill_super); + return vfs_get_super(fc, test_keyed_super, fill_super); } EXPORT_SYMBOL(get_tree_keyed); +static int set_bdev_super(struct super_block *s, void *data) +{ + s->s_dev = *(dev_t *)data; + return 0; +} + +static int super_s_dev_set(struct super_block *s, struct fs_context *fc) +{ + return set_bdev_super(s, fc->sget_key); +} + +static int super_s_dev_test(struct super_block *s, struct fs_context *fc) +{ + return !(s->s_iflags & SB_I_RETIRED) && + s->s_dev == *(dev_t *)fc->sget_key; +} + +/** + * sget_dev - Find or create a superblock by device number + * @fc: Filesystem context. + * @dev: device number + * + * Find or create a superblock using the provided device number that + * will be stored in fc->sget_key. + * + * If an extant superblock is matched, then that will be returned with + * an elevated reference count that the caller must transfer or discard. + * + * If no match is made, a new superblock will be allocated and basic + * initialisation will be performed (s_type, s_fs_info, s_id, s_dev will + * be set). The superblock will be published and it will be returned in + * a partially constructed state with SB_BORN and SB_ACTIVE as yet + * unset. + * + * Return: an existing or newly created superblock on success, an error + * pointer on failure. + */ +struct super_block *sget_dev(struct fs_context *fc, dev_t dev) +{ + fc->sget_key = &dev; + return sget_fc(fc, super_s_dev_test, super_s_dev_set); +} +EXPORT_SYMBOL(sget_dev); + #ifdef CONFIG_BLOCK -static void fs_mark_dead(struct block_device *bdev) +/* + * Lock a super block that the callers holds a reference to. + * + * The caller needs to ensure that the super_block isn't being freed while + * calling this function, e.g. by holding a lock over the call to this function + * and the place that clears the pointer to the superblock used by this function + * before freeing the superblock. + */ +static bool super_lock_shared_active(struct super_block *sb) { - struct super_block *sb; + bool born = super_lock_shared(sb); - sb = get_super(bdev); - if (!sb) + if (!born || !sb->s_root || !(sb->s_flags & SB_ACTIVE)) { + super_unlock_shared(sb); + return false; + } + return true; +} + +static void fs_bdev_mark_dead(struct block_device *bdev, bool surprise) +{ + struct super_block *sb = bdev->bd_holder; + + /* bd_holder_lock ensures that the sb isn't freed */ + lockdep_assert_held(&bdev->bd_holder_lock); + + if (!super_lock_shared_active(sb)) return; + if (!surprise) + sync_filesystem(sb); + shrink_dcache_sb(sb); + invalidate_inodes(sb); if (sb->s_op->shutdown) sb->s_op->shutdown(sb); - drop_super(sb); -} -static const struct blk_holder_ops fs_holder_ops = { - .mark_dead = fs_mark_dead, -}; + super_unlock_shared(sb); +} -static int set_bdev_super(struct super_block *s, void *data) +static void fs_bdev_sync(struct block_device *bdev) { - s->s_bdev = data; - s->s_dev = s->s_bdev->bd_dev; - s->s_bdi = bdi_get(s->s_bdev->bd_disk->bdi); + struct super_block *sb = bdev->bd_holder; - if (bdev_stable_writes(s->s_bdev)) - s->s_iflags |= SB_I_STABLE_WRITES; - return 0; -} + lockdep_assert_held(&bdev->bd_holder_lock); -static int set_bdev_super_fc(struct super_block *s, struct fs_context *fc) -{ - return set_bdev_super(s, fc->sget_key); + if (!super_lock_shared_active(sb)) + return; + sync_filesystem(sb); + super_unlock_shared(sb); } -static int test_bdev_super_fc(struct super_block *s, struct fs_context *fc) +const struct blk_holder_ops fs_holder_ops = { + .mark_dead = fs_bdev_mark_dead, + .sync = fs_bdev_sync, +}; +EXPORT_SYMBOL_GPL(fs_holder_ops); + +int setup_bdev_super(struct super_block *sb, int sb_flags, + struct fs_context *fc) { - return !(s->s_iflags & SB_I_RETIRED) && s->s_bdev == fc->sget_key; + blk_mode_t mode = sb_open_mode(sb_flags); + struct block_device *bdev; + + bdev = blkdev_get_by_dev(sb->s_dev, mode, sb, &fs_holder_ops); + if (IS_ERR(bdev)) { + if (fc) + errorf(fc, "%s: Can't open blockdev", fc->source); + return PTR_ERR(bdev); + } + + /* + * This really should be in blkdev_get_by_dev, but right now can't due + * to legacy issues that require us to allow opening a block device node + * writable from userspace even for a read-only block device. + */ + if ((mode & BLK_OPEN_WRITE) && bdev_read_only(bdev)) { + blkdev_put(bdev, sb); + return -EACCES; + } + + /* + * Until SB_BORN flag is set, there can be no active superblock + * references and thus no filesystem freezing. get_active_super() will + * just loop waiting for SB_BORN so even freeze_bdev() cannot proceed. + * + * It is enough to check bdev was not frozen before we set s_bdev. + */ + mutex_lock(&bdev->bd_fsfreeze_mutex); + if (bdev->bd_fsfreeze_count > 0) { + mutex_unlock(&bdev->bd_fsfreeze_mutex); + if (fc) + warnf(fc, "%pg: Can't mount, blockdev is frozen", bdev); + blkdev_put(bdev, sb); + return -EBUSY; + } + spin_lock(&sb_lock); + sb->s_bdev = bdev; + sb->s_bdi = bdi_get(bdev->bd_disk->bdi); + if (bdev_stable_writes(bdev)) + sb->s_iflags |= SB_I_STABLE_WRITES; + spin_unlock(&sb_lock); + mutex_unlock(&bdev->bd_fsfreeze_mutex); + + snprintf(sb->s_id, sizeof(sb->s_id), "%pg", bdev); + shrinker_debugfs_rename(&sb->s_shrink, "sb-%s:%s", sb->s_type->name, + sb->s_id); + sb_set_blocksize(sb, block_size(bdev)); + return 0; } +EXPORT_SYMBOL_GPL(setup_bdev_super); /** * get_tree_bdev - Get a superblock based on a single block device @@ -1256,73 +1538,48 @@ int get_tree_bdev(struct fs_context *fc, int (*fill_super)(struct super_block *, struct fs_context *)) { - struct block_device *bdev; struct super_block *s; int error = 0; + dev_t dev; if (!fc->source) return invalf(fc, "No source specified"); - bdev = blkdev_get_by_path(fc->source, sb_open_mode(fc->sb_flags), - fc->fs_type, &fs_holder_ops); - if (IS_ERR(bdev)) { - errorf(fc, "%s: Can't open blockdev", fc->source); - return PTR_ERR(bdev); - } - - /* Once the superblock is inserted into the list by sget_fc(), s_umount - * will protect the lockfs code from trying to start a snapshot while - * we are mounting - */ - mutex_lock(&bdev->bd_fsfreeze_mutex); - if (bdev->bd_fsfreeze_count > 0) { - mutex_unlock(&bdev->bd_fsfreeze_mutex); - warnf(fc, "%pg: Can't mount, blockdev is frozen", bdev); - blkdev_put(bdev, fc->fs_type); - return -EBUSY; + error = lookup_bdev(fc->source, &dev); + if (error) { + errorf(fc, "%s: Can't lookup blockdev", fc->source); + return error; } fc->sb_flags |= SB_NOSEC; - fc->sget_key = bdev; - s = sget_fc(fc, test_bdev_super_fc, set_bdev_super_fc); - mutex_unlock(&bdev->bd_fsfreeze_mutex); - if (IS_ERR(s)) { - blkdev_put(bdev, fc->fs_type); + s = sget_dev(fc, dev); + if (IS_ERR(s)) return PTR_ERR(s); - } if (s->s_root) { /* Don't summarily change the RO/RW state. */ if ((fc->sb_flags ^ s->s_flags) & SB_RDONLY) { - warnf(fc, "%pg: Can't mount, would change RO state", bdev); + warnf(fc, "%pg: Can't mount, would change RO state", s->s_bdev); deactivate_locked_super(s); - blkdev_put(bdev, fc->fs_type); return -EBUSY; } - + } else { /* - * s_umount nests inside open_mutex during - * __invalidate_device(). blkdev_put() acquires - * open_mutex and can't be called under s_umount. Drop - * s_umount temporarily. This is safe as we're - * holding an active reference. + * We drop s_umount here because we need to open the bdev and + * bdev->open_mutex ranks above s_umount (blkdev_put() -> + * bdev_mark_dead()). It is safe because we have active sb + * reference and SB_BORN is not set yet. */ - up_write(&s->s_umount); - blkdev_put(bdev, fc->fs_type); - down_write(&s->s_umount); - } else { - snprintf(s->s_id, sizeof(s->s_id), "%pg", bdev); - shrinker_debugfs_rename(&s->s_shrink, "sb-%s:%s", - fc->fs_type->name, s->s_id); - sb_set_blocksize(s, block_size(bdev)); - error = fill_super(s, fc); + super_unlock_excl(s); + error = setup_bdev_super(s, fc->sb_flags, fc); + __super_lock_excl(s); + if (!error) + error = fill_super(s, fc); if (error) { deactivate_locked_super(s); return error; } - s->s_flags |= SB_ACTIVE; - bdev->bd_super = s; } BUG_ON(fc->root); @@ -1333,79 +1590,52 @@ EXPORT_SYMBOL(get_tree_bdev); static int test_bdev_super(struct super_block *s, void *data) { - return !(s->s_iflags & SB_I_RETIRED) && (void *)s->s_bdev == data; + return !(s->s_iflags & SB_I_RETIRED) && s->s_dev == *(dev_t *)data; } struct dentry *mount_bdev(struct file_system_type *fs_type, int flags, const char *dev_name, void *data, int (*fill_super)(struct super_block *, void *, int)) { - struct block_device *bdev; struct super_block *s; - int error = 0; + int error; + dev_t dev; - bdev = blkdev_get_by_path(dev_name, sb_open_mode(flags), fs_type, - &fs_holder_ops); - if (IS_ERR(bdev)) - return ERR_CAST(bdev); + error = lookup_bdev(dev_name, &dev); + if (error) + return ERR_PTR(error); - /* - * once the super is inserted into the list by sget, s_umount - * will protect the lockfs code from trying to start a snapshot - * while we are mounting - */ - mutex_lock(&bdev->bd_fsfreeze_mutex); - if (bdev->bd_fsfreeze_count > 0) { - mutex_unlock(&bdev->bd_fsfreeze_mutex); - error = -EBUSY; - goto error_bdev; - } - s = sget(fs_type, test_bdev_super, set_bdev_super, flags | SB_NOSEC, - bdev); - mutex_unlock(&bdev->bd_fsfreeze_mutex); + flags |= SB_NOSEC; + s = sget(fs_type, test_bdev_super, set_bdev_super, flags, &dev); if (IS_ERR(s)) - goto error_s; + return ERR_CAST(s); if (s->s_root) { if ((flags ^ s->s_flags) & SB_RDONLY) { deactivate_locked_super(s); - error = -EBUSY; - goto error_bdev; + return ERR_PTR(-EBUSY); } - + } else { /* - * s_umount nests inside open_mutex during - * __invalidate_device(). blkdev_put() acquires - * open_mutex and can't be called under s_umount. Drop - * s_umount temporarily. This is safe as we're - * holding an active reference. + * We drop s_umount here because we need to open the bdev and + * bdev->open_mutex ranks above s_umount (blkdev_put() -> + * bdev_mark_dead()). It is safe because we have active sb + * reference and SB_BORN is not set yet. */ - up_write(&s->s_umount); - blkdev_put(bdev, fs_type); - down_write(&s->s_umount); - } else { - snprintf(s->s_id, sizeof(s->s_id), "%pg", bdev); - shrinker_debugfs_rename(&s->s_shrink, "sb-%s:%s", - fs_type->name, s->s_id); - sb_set_blocksize(s, block_size(bdev)); - error = fill_super(s, data, flags & SB_SILENT ? 1 : 0); + super_unlock_excl(s); + error = setup_bdev_super(s, flags, NULL); + __super_lock_excl(s); + if (!error) + error = fill_super(s, data, flags & SB_SILENT ? 1 : 0); if (error) { deactivate_locked_super(s); - goto error; + return ERR_PTR(error); } s->s_flags |= SB_ACTIVE; - bdev->bd_super = s; } return dget(s->s_root); - -error_s: - error = PTR_ERR(s); -error_bdev: - blkdev_put(bdev, fs_type); -error: - return ERR_PTR(error); } EXPORT_SYMBOL(mount_bdev); @@ -1413,10 +1643,11 @@ void kill_block_super(struct super_block *sb) { struct block_device *bdev = sb->s_bdev; - bdev->bd_super = NULL; generic_shutdown_super(sb); - sync_blockdev(bdev); - blkdev_put(bdev, sb->s_type); + if (bdev) { + sync_blockdev(bdev); + blkdev_put(bdev, sb); + } } EXPORT_SYMBOL(kill_block_super); @@ -1533,13 +1764,13 @@ int vfs_get_tree(struct fs_context *fc) WARN_ON(!sb->s_bdi); /* - * Write barrier is for super_cache_count(). We place it before setting - * SB_BORN as the data dependency between the two functions is the - * superblock structure contents that we just set up, not the SB_BORN - * flag. + * super_wake() contains a memory barrier which also care of + * ordering for super_cache_count(). We place it before setting + * SB_BORN as the data dependency between the two functions is + * the superblock structure contents that we just set up, not + * the SB_BORN flag. */ - smp_wmb(); - sb->s_flags |= SB_BORN; + super_wake(sb, SB_BORN); error = security_sb_set_mnt_opts(sb, fc->security, 0, NULL); if (unlikely(error)) { @@ -1644,14 +1875,43 @@ static void sb_freeze_unlock(struct super_block *sb, int level) percpu_up_write(sb->s_writers.rw_sem + level); } +static int wait_for_partially_frozen(struct super_block *sb) +{ + int ret = 0; + + do { + unsigned short old = sb->s_writers.frozen; + + up_write(&sb->s_umount); + ret = wait_var_event_killable(&sb->s_writers.frozen, + sb->s_writers.frozen != old); + down_write(&sb->s_umount); + } while (ret == 0 && + sb->s_writers.frozen != SB_UNFROZEN && + sb->s_writers.frozen != SB_FREEZE_COMPLETE); + + return ret; +} + /** * freeze_super - lock the filesystem and force it into a consistent state * @sb: the super to lock + * @who: context that wants to freeze * * Syncs the super to make sure the filesystem is consistent and calls the fs's - * freeze_fs. Subsequent calls to this without first thawing the fs will return + * freeze_fs. Subsequent calls to this without first thawing the fs may return * -EBUSY. * + * @who should be: + * * %FREEZE_HOLDER_USERSPACE if userspace wants to freeze the fs; + * * %FREEZE_HOLDER_KERNEL if the kernel wants to freeze the fs. + * + * The @who argument distinguishes between the kernel and userspace trying to + * freeze the filesystem. Although there cannot be multiple kernel freezes or + * multiple userspace freezes in effect at any given time, the kernel and + * userspace can both hold a filesystem frozen. The filesystem remains frozen + * until there are no kernel or userspace freezes in effect. + * * During this function, sb->s_writers.frozen goes through these values: * * SB_UNFROZEN: File system is normal, all writes progress as usual. @@ -1677,34 +1937,62 @@ static void sb_freeze_unlock(struct super_block *sb, int level) * * sb->s_writers.frozen is protected by sb->s_umount. */ -int freeze_super(struct super_block *sb) +int freeze_super(struct super_block *sb, enum freeze_holder who) { int ret; atomic_inc(&sb->s_active); - down_write(&sb->s_umount); + if (!super_lock_excl(sb)) + WARN(1, "Dying superblock while freezing!"); + +retry: + if (sb->s_writers.frozen == SB_FREEZE_COMPLETE) { + if (sb->s_writers.freeze_holders & who) { + deactivate_locked_super(sb); + return -EBUSY; + } + + WARN_ON(sb->s_writers.freeze_holders == 0); + + /* + * Someone else already holds this type of freeze; share the + * freeze and assign the active ref to the freeze. + */ + sb->s_writers.freeze_holders |= who; + super_unlock_excl(sb); + return 0; + } + if (sb->s_writers.frozen != SB_UNFROZEN) { - deactivate_locked_super(sb); - return -EBUSY; + ret = wait_for_partially_frozen(sb); + if (ret) { + deactivate_locked_super(sb); + return ret; + } + + goto retry; } if (!(sb->s_flags & SB_BORN)) { - up_write(&sb->s_umount); + super_unlock_excl(sb); return 0; /* sic - it's "nothing to do" */ } if (sb_rdonly(sb)) { /* Nothing to do really... */ + sb->s_writers.freeze_holders |= who; sb->s_writers.frozen = SB_FREEZE_COMPLETE; - up_write(&sb->s_umount); + wake_up_var(&sb->s_writers.frozen); + super_unlock_excl(sb); return 0; } sb->s_writers.frozen = SB_FREEZE_WRITE; /* Release s_umount to preserve sb_start_write -> s_umount ordering */ - up_write(&sb->s_umount); + super_unlock_excl(sb); sb_wait_write(sb, SB_FREEZE_WRITE); - down_write(&sb->s_umount); + if (!super_lock_excl(sb)) + WARN(1, "Dying superblock while freezing!"); /* Now we go and block page faults... */ sb->s_writers.frozen = SB_FREEZE_PAGEFAULT; @@ -1715,6 +2003,7 @@ int freeze_super(struct super_block *sb) if (ret) { sb->s_writers.frozen = SB_UNFROZEN; sb_freeze_unlock(sb, SB_FREEZE_PAGEFAULT); + wake_up_var(&sb->s_writers.frozen); deactivate_locked_super(sb); return ret; } @@ -1730,6 +2019,7 @@ int freeze_super(struct super_block *sb) "VFS:Filesystem freeze failed\n"); sb->s_writers.frozen = SB_UNFROZEN; sb_freeze_unlock(sb, SB_FREEZE_FS); + wake_up_var(&sb->s_writers.frozen); deactivate_locked_super(sb); return ret; } @@ -1738,24 +2028,50 @@ int freeze_super(struct super_block *sb) * For debugging purposes so that fs can warn if it sees write activity * when frozen is set to SB_FREEZE_COMPLETE, and for thaw_super(). */ + sb->s_writers.freeze_holders |= who; sb->s_writers.frozen = SB_FREEZE_COMPLETE; + wake_up_var(&sb->s_writers.frozen); lockdep_sb_freeze_release(sb); - up_write(&sb->s_umount); + super_unlock_excl(sb); return 0; } EXPORT_SYMBOL(freeze_super); -static int thaw_super_locked(struct super_block *sb) +/* + * Undoes the effect of a freeze_super_locked call. If the filesystem is + * frozen both by userspace and the kernel, a thaw call from either source + * removes that state without releasing the other state or unlocking the + * filesystem. + */ +static int thaw_super_locked(struct super_block *sb, enum freeze_holder who) { int error; - if (sb->s_writers.frozen != SB_FREEZE_COMPLETE) { - up_write(&sb->s_umount); + if (sb->s_writers.frozen == SB_FREEZE_COMPLETE) { + if (!(sb->s_writers.freeze_holders & who)) { + super_unlock_excl(sb); + return -EINVAL; + } + + /* + * Freeze is shared with someone else. Release our hold and + * drop the active ref that freeze_super assigned to the + * freezer. + */ + if (sb->s_writers.freeze_holders & ~who) { + sb->s_writers.freeze_holders &= ~who; + deactivate_locked_super(sb); + return 0; + } + } else { + super_unlock_excl(sb); return -EINVAL; } if (sb_rdonly(sb)) { + sb->s_writers.freeze_holders &= ~who; sb->s_writers.frozen = SB_UNFROZEN; + wake_up_var(&sb->s_writers.frozen); goto out; } @@ -1764,15 +2080,16 @@ static int thaw_super_locked(struct super_block *sb) if (sb->s_op->unfreeze_fs) { error = sb->s_op->unfreeze_fs(sb); if (error) { - printk(KERN_ERR - "VFS:Filesystem thaw failed\n"); + printk(KERN_ERR "VFS:Filesystem thaw failed\n"); lockdep_sb_freeze_release(sb); - up_write(&sb->s_umount); + super_unlock_excl(sb); return error; } } + sb->s_writers.freeze_holders &= ~who; sb->s_writers.frozen = SB_UNFROZEN; + wake_up_var(&sb->s_writers.frozen); sb_freeze_unlock(sb, SB_FREEZE_FS); out: deactivate_locked_super(sb); @@ -1782,13 +2099,20 @@ out: /** * thaw_super -- unlock filesystem * @sb: the super to thaw + * @who: context that wants to freeze + * + * Unlocks the filesystem and marks it writeable again after freeze_super() + * if there are no remaining freezes on the filesystem. * - * Unlocks the filesystem and marks it writeable again after freeze_super(). + * @who should be: + * * %FREEZE_HOLDER_USERSPACE if userspace wants to thaw the fs; + * * %FREEZE_HOLDER_KERNEL if the kernel wants to thaw the fs. */ -int thaw_super(struct super_block *sb) +int thaw_super(struct super_block *sb, enum freeze_holder who) { - down_write(&sb->s_umount); - return thaw_super_locked(sb); + if (!super_lock_excl(sb)) + WARN(1, "Dying superblock while thawing!"); + return thaw_super_locked(sb, who); } EXPORT_SYMBOL(thaw_super); diff --git a/fs/sysv/Kconfig b/fs/sysv/Kconfig index b4e23e03fbeb..67b3f90afbfd 100644 --- a/fs/sysv/Kconfig +++ b/fs/sysv/Kconfig @@ -2,6 +2,7 @@ config SYSV_FS tristate "System V/Xenix/V7/Coherent file system support" depends on BLOCK + select BUFFER_HEAD help SCO, Xenix and Coherent are commercial Unix systems for Intel machines, and Version 7 was used on the DEC PDP-11. Saying Y diff --git a/fs/sysv/dir.c b/fs/sysv/dir.c index 0140010aa0c3..2f5ead88d00b 100644 --- a/fs/sysv/dir.c +++ b/fs/sysv/dir.c @@ -224,7 +224,7 @@ got_it: memset (de->name + namelen, 0, SYSV_DIRSIZE - namelen - 2); de->inode = cpu_to_fs16(SYSV_SB(inode->i_sb), inode->i_ino); dir_commit_chunk(page, pos, SYSV_DIRSIZE); - dir->i_mtime = dir->i_ctime = current_time(dir); + dir->i_mtime = inode_set_ctime_current(dir); mark_inode_dirty(dir); err = sysv_handle_dirsync(dir); out_page: @@ -249,7 +249,7 @@ int sysv_delete_entry(struct sysv_dir_entry *de, struct page *page) } de->inode = 0; dir_commit_chunk(page, pos, SYSV_DIRSIZE); - inode->i_ctime = inode->i_mtime = current_time(inode); + inode->i_mtime = inode_set_ctime_current(inode); mark_inode_dirty(inode); return sysv_handle_dirsync(inode); } @@ -346,7 +346,7 @@ int sysv_set_link(struct sysv_dir_entry *de, struct page *page, } de->inode = cpu_to_fs16(SYSV_SB(inode->i_sb), inode->i_ino); dir_commit_chunk(page, pos, SYSV_DIRSIZE); - dir->i_mtime = dir->i_ctime = current_time(dir); + dir->i_mtime = inode_set_ctime_current(dir); mark_inode_dirty(dir); return sysv_handle_dirsync(inode); } diff --git a/fs/sysv/ialloc.c b/fs/sysv/ialloc.c index e732879036ab..6719da5889d9 100644 --- a/fs/sysv/ialloc.c +++ b/fs/sysv/ialloc.c @@ -165,7 +165,7 @@ struct inode * sysv_new_inode(const struct inode * dir, umode_t mode) dirty_sb(sb); inode_init_owner(&nop_mnt_idmap, inode, dir, mode); inode->i_ino = fs16_to_cpu(sbi, ino); - inode->i_mtime = inode->i_atime = inode->i_ctime = current_time(inode); + inode->i_mtime = inode->i_atime = inode_set_ctime_current(inode); inode->i_blocks = 0; memset(SYSV_I(inode)->i_data, 0, sizeof(SYSV_I(inode)->i_data)); SYSV_I(inode)->i_dir_start_lookup = 0; diff --git a/fs/sysv/inode.c b/fs/sysv/inode.c index 9e8d4a6fb2f3..0aa3827d8178 100644 --- a/fs/sysv/inode.c +++ b/fs/sysv/inode.c @@ -202,8 +202,7 @@ struct inode *sysv_iget(struct super_block *sb, unsigned int ino) inode->i_size = fs32_to_cpu(sbi, raw_inode->i_size); inode->i_atime.tv_sec = fs32_to_cpu(sbi, raw_inode->i_atime); inode->i_mtime.tv_sec = fs32_to_cpu(sbi, raw_inode->i_mtime); - inode->i_ctime.tv_sec = fs32_to_cpu(sbi, raw_inode->i_ctime); - inode->i_ctime.tv_nsec = 0; + inode_set_ctime(inode, fs32_to_cpu(sbi, raw_inode->i_ctime), 0); inode->i_atime.tv_nsec = 0; inode->i_mtime.tv_nsec = 0; inode->i_blocks = 0; @@ -256,7 +255,7 @@ static int __sysv_write_inode(struct inode *inode, int wait) raw_inode->i_size = cpu_to_fs32(sbi, inode->i_size); raw_inode->i_atime = cpu_to_fs32(sbi, inode->i_atime.tv_sec); raw_inode->i_mtime = cpu_to_fs32(sbi, inode->i_mtime.tv_sec); - raw_inode->i_ctime = cpu_to_fs32(sbi, inode->i_ctime.tv_sec); + raw_inode->i_ctime = cpu_to_fs32(sbi, inode_get_ctime(inode).tv_sec); si = SYSV_I(inode); if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode)) diff --git a/fs/sysv/itree.c b/fs/sysv/itree.c index 58d7f43a1371..edb94e55de8e 100644 --- a/fs/sysv/itree.c +++ b/fs/sysv/itree.c @@ -183,7 +183,7 @@ static inline int splice_branch(struct inode *inode, *where->p = where->key; write_unlock(&pointers_lock); - inode->i_ctime = current_time(inode); + inode_set_ctime_current(inode); /* had we spliced it onto indirect block? */ if (where->bh) @@ -423,7 +423,7 @@ do_indirects: } n++; } - inode->i_mtime = inode->i_ctime = current_time(inode); + inode->i_mtime = inode_set_ctime_current(inode); if (IS_SYNC(inode)) sysv_sync_inode (inode); else @@ -449,7 +449,8 @@ int sysv_getattr(struct mnt_idmap *idmap, const struct path *path, struct kstat *stat, u32 request_mask, unsigned int flags) { struct super_block *s = path->dentry->d_sb; - generic_fillattr(&nop_mnt_idmap, d_inode(path->dentry), stat); + generic_fillattr(&nop_mnt_idmap, request_mask, d_inode(path->dentry), + stat); stat->blocks = (s->s_blocksize / 512) * sysv_nblocks(s, stat->size); stat->blksize = s->s_blocksize; return 0; diff --git a/fs/sysv/namei.c b/fs/sysv/namei.c index fcf163fea3ad..d6b73798071b 100644 --- a/fs/sysv/namei.c +++ b/fs/sysv/namei.c @@ -103,7 +103,7 @@ static int sysv_link(struct dentry * old_dentry, struct inode * dir, { struct inode *inode = d_inode(old_dentry); - inode->i_ctime = current_time(inode); + inode_set_ctime_current(inode); inode_inc_link_count(inode); ihold(inode); @@ -161,7 +161,7 @@ static int sysv_unlink(struct inode * dir, struct dentry * dentry) err = sysv_delete_entry(de, page); if (!err) { - inode->i_ctime = dir->i_ctime; + inode_set_ctime_to_ts(inode, inode_get_ctime(dir)); inode_dec_link_count(inode); } unmap_and_put_page(page, de); @@ -230,7 +230,7 @@ static int sysv_rename(struct mnt_idmap *idmap, struct inode *old_dir, unmap_and_put_page(new_page, new_de); if (err) goto out_dir; - new_inode->i_ctime = current_time(new_inode); + inode_set_ctime_current(new_inode); if (dir_de) drop_nlink(new_inode); inode_dec_link_count(new_inode); diff --git a/fs/tracefs/Makefile b/fs/tracefs/Makefile index 7c35a282b484..73c56da8e284 100644 --- a/fs/tracefs/Makefile +++ b/fs/tracefs/Makefile @@ -1,5 +1,6 @@ # SPDX-License-Identifier: GPL-2.0-only tracefs-objs := inode.o +tracefs-objs += event_inode.o obj-$(CONFIG_TRACING) += tracefs.o diff --git a/fs/tracefs/event_inode.c b/fs/tracefs/event_inode.c new file mode 100644 index 000000000000..237c6f370ad9 --- /dev/null +++ b/fs/tracefs/event_inode.c @@ -0,0 +1,807 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * event_inode.c - part of tracefs, a pseudo file system for activating tracing + * + * Copyright (C) 2020-23 VMware Inc, author: Steven Rostedt (VMware) <rostedt@goodmis.org> + * Copyright (C) 2020-23 VMware Inc, author: Ajay Kaher <akaher@vmware.com> + * + * eventfs is used to dynamically create inodes and dentries based on the + * meta data provided by the tracing system. + * + * eventfs stores the meta-data of files/dirs and holds off on creating + * inodes/dentries of the files. When accessed, the eventfs will create the + * inodes/dentries in a just-in-time (JIT) manner. The eventfs will clean up + * and delete the inodes/dentries when they are no longer referenced. + */ +#include <linux/fsnotify.h> +#include <linux/fs.h> +#include <linux/namei.h> +#include <linux/workqueue.h> +#include <linux/security.h> +#include <linux/tracefs.h> +#include <linux/kref.h> +#include <linux/delay.h> +#include "internal.h" + +struct eventfs_inode { + struct list_head e_top_files; +}; + +/* + * struct eventfs_file - hold the properties of the eventfs files and + * directories. + * @name: the name of the file or directory to create + * @d_parent: holds parent's dentry + * @dentry: once accessed holds dentry + * @list: file or directory to be added to parent directory + * @ei: list of files and directories within directory + * @fop: file_operations for file or directory + * @iop: inode_operations for file or directory + * @data: something that the caller will want to get to later on + * @mode: the permission that the file or directory should have + */ +struct eventfs_file { + const char *name; + struct dentry *d_parent; + struct dentry *dentry; + struct list_head list; + struct eventfs_inode *ei; + const struct file_operations *fop; + const struct inode_operations *iop; + /* + * Union - used for deletion + * @del_list: list of eventfs_file to delete + * @rcu: eventfs_file to delete in RCU + * @is_freed: node is freed if one of the above is set + */ + union { + struct list_head del_list; + struct rcu_head rcu; + unsigned long is_freed; + }; + void *data; + umode_t mode; +}; + +static DEFINE_MUTEX(eventfs_mutex); +DEFINE_STATIC_SRCU(eventfs_srcu); + +static struct dentry *eventfs_root_lookup(struct inode *dir, + struct dentry *dentry, + unsigned int flags); +static int dcache_dir_open_wrapper(struct inode *inode, struct file *file); +static int eventfs_release(struct inode *inode, struct file *file); + +static const struct inode_operations eventfs_root_dir_inode_operations = { + .lookup = eventfs_root_lookup, +}; + +static const struct file_operations eventfs_file_operations = { + .open = dcache_dir_open_wrapper, + .read = generic_read_dir, + .iterate_shared = dcache_readdir, + .llseek = generic_file_llseek, + .release = eventfs_release, +}; + +/** + * create_file - create a file in the tracefs filesystem + * @name: the name of the file to create. + * @mode: the permission that the file should have. + * @parent: parent dentry for this file. + * @data: something that the caller will want to get to later on. + * @fop: struct file_operations that should be used for this file. + * + * This is the basic "create a file" function for tracefs. It allows for a + * wide range of flexibility in creating a file. + * + * This function will return a pointer to a dentry if it succeeds. This + * pointer must be passed to the tracefs_remove() function when the file is + * to be removed (no automatic cleanup happens if your module is unloaded, + * you are responsible here.) If an error occurs, %NULL will be returned. + * + * If tracefs is not enabled in the kernel, the value -%ENODEV will be + * returned. + */ +static struct dentry *create_file(const char *name, umode_t mode, + struct dentry *parent, void *data, + const struct file_operations *fop) +{ + struct tracefs_inode *ti; + struct dentry *dentry; + struct inode *inode; + + if (!(mode & S_IFMT)) + mode |= S_IFREG; + + if (WARN_ON_ONCE(!S_ISREG(mode))) + return NULL; + + dentry = eventfs_start_creating(name, parent); + + if (IS_ERR(dentry)) + return dentry; + + inode = tracefs_get_inode(dentry->d_sb); + if (unlikely(!inode)) + return eventfs_failed_creating(dentry); + + inode->i_mode = mode; + inode->i_fop = fop; + inode->i_private = data; + + ti = get_tracefs(inode); + ti->flags |= TRACEFS_EVENT_INODE; + d_instantiate(dentry, inode); + fsnotify_create(dentry->d_parent->d_inode, dentry); + return eventfs_end_creating(dentry); +}; + +/** + * create_dir - create a dir in the tracefs filesystem + * @name: the name of the file to create. + * @parent: parent dentry for this file. + * @data: something that the caller will want to get to later on. + * + * This is the basic "create a dir" function for eventfs. It allows for a + * wide range of flexibility in creating a dir. + * + * This function will return a pointer to a dentry if it succeeds. This + * pointer must be passed to the tracefs_remove() function when the file is + * to be removed (no automatic cleanup happens if your module is unloaded, + * you are responsible here.) If an error occurs, %NULL will be returned. + * + * If tracefs is not enabled in the kernel, the value -%ENODEV will be + * returned. + */ +static struct dentry *create_dir(const char *name, struct dentry *parent, void *data) +{ + struct tracefs_inode *ti; + struct dentry *dentry; + struct inode *inode; + + dentry = eventfs_start_creating(name, parent); + if (IS_ERR(dentry)) + return dentry; + + inode = tracefs_get_inode(dentry->d_sb); + if (unlikely(!inode)) + return eventfs_failed_creating(dentry); + + inode->i_mode = S_IFDIR | S_IRWXU | S_IRUGO | S_IXUGO; + inode->i_op = &eventfs_root_dir_inode_operations; + inode->i_fop = &eventfs_file_operations; + inode->i_private = data; + + ti = get_tracefs(inode); + ti->flags |= TRACEFS_EVENT_INODE; + + inc_nlink(inode); + d_instantiate(dentry, inode); + inc_nlink(dentry->d_parent->d_inode); + fsnotify_mkdir(dentry->d_parent->d_inode, dentry); + return eventfs_end_creating(dentry); +} + +/** + * eventfs_set_ef_status_free - set the ef->status to free + * @dentry: dentry who's status to be freed + * + * eventfs_set_ef_status_free will be called if no more + * references remain + */ +void eventfs_set_ef_status_free(struct dentry *dentry) +{ + struct tracefs_inode *ti_parent; + struct eventfs_file *ef; + + mutex_lock(&eventfs_mutex); + ti_parent = get_tracefs(dentry->d_parent->d_inode); + if (!ti_parent || !(ti_parent->flags & TRACEFS_EVENT_INODE)) + goto out; + + ef = dentry->d_fsdata; + if (!ef) + goto out; + + /* + * If ef was freed, then the LSB bit is set for d_fsdata. + * But this should not happen, as it should still have a + * ref count that prevents it. Warn in case it does. + */ + if (WARN_ON_ONCE((unsigned long)ef & 1)) + goto out; + + dentry->d_fsdata = NULL; + ef->dentry = NULL; +out: + mutex_unlock(&eventfs_mutex); +} + +/** + * eventfs_post_create_dir - post create dir routine + * @ef: eventfs_file of recently created dir + * + * Map the meta-data of files within an eventfs dir to their parent dentry + */ +static void eventfs_post_create_dir(struct eventfs_file *ef) +{ + struct eventfs_file *ef_child; + struct tracefs_inode *ti; + + /* srcu lock already held */ + /* fill parent-child relation */ + list_for_each_entry_srcu(ef_child, &ef->ei->e_top_files, list, + srcu_read_lock_held(&eventfs_srcu)) { + ef_child->d_parent = ef->dentry; + } + + ti = get_tracefs(ef->dentry->d_inode); + ti->private = ef->ei; +} + +/** + * create_dentry - helper function to create dentry + * @ef: eventfs_file of file or directory to create + * @parent: parent dentry + * @lookup: true if called from lookup routine + * + * Used to create a dentry for file/dir, executes post dentry creation routine + */ +static struct dentry * +create_dentry(struct eventfs_file *ef, struct dentry *parent, bool lookup) +{ + bool invalidate = false; + struct dentry *dentry; + + mutex_lock(&eventfs_mutex); + if (ef->is_freed) { + mutex_unlock(&eventfs_mutex); + return NULL; + } + if (ef->dentry) { + dentry = ef->dentry; + /* On dir open, up the ref count */ + if (!lookup) + dget(dentry); + mutex_unlock(&eventfs_mutex); + return dentry; + } + mutex_unlock(&eventfs_mutex); + + if (!lookup) + inode_lock(parent->d_inode); + + if (ef->ei) + dentry = create_dir(ef->name, parent, ef->data); + else + dentry = create_file(ef->name, ef->mode, parent, + ef->data, ef->fop); + + if (!lookup) + inode_unlock(parent->d_inode); + + mutex_lock(&eventfs_mutex); + if (IS_ERR_OR_NULL(dentry)) { + /* If the ef was already updated get it */ + dentry = ef->dentry; + if (dentry && !lookup) + dget(dentry); + mutex_unlock(&eventfs_mutex); + return dentry; + } + + if (!ef->dentry && !ef->is_freed) { + ef->dentry = dentry; + if (ef->ei) + eventfs_post_create_dir(ef); + dentry->d_fsdata = ef; + } else { + /* A race here, should try again (unless freed) */ + invalidate = true; + + /* + * Should never happen unless we get here due to being freed. + * Otherwise it means two dentries exist with the same name. + */ + WARN_ON_ONCE(!ef->is_freed); + } + mutex_unlock(&eventfs_mutex); + if (invalidate) + d_invalidate(dentry); + + if (lookup || invalidate) + dput(dentry); + + return invalidate ? NULL : dentry; +} + +static bool match_event_file(struct eventfs_file *ef, const char *name) +{ + bool ret; + + mutex_lock(&eventfs_mutex); + ret = !ef->is_freed && strcmp(ef->name, name) == 0; + mutex_unlock(&eventfs_mutex); + + return ret; +} + +/** + * eventfs_root_lookup - lookup routine to create file/dir + * @dir: in which a lookup is being done + * @dentry: file/dir dentry + * @flags: to pass as flags parameter to simple lookup + * + * Used to create a dynamic file/dir within @dir. Use the eventfs_inode + * list of meta data to find the information needed to create the file/dir. + */ +static struct dentry *eventfs_root_lookup(struct inode *dir, + struct dentry *dentry, + unsigned int flags) +{ + struct tracefs_inode *ti; + struct eventfs_inode *ei; + struct eventfs_file *ef; + struct dentry *ret = NULL; + int idx; + + ti = get_tracefs(dir); + if (!(ti->flags & TRACEFS_EVENT_INODE)) + return NULL; + + ei = ti->private; + idx = srcu_read_lock(&eventfs_srcu); + list_for_each_entry_srcu(ef, &ei->e_top_files, list, + srcu_read_lock_held(&eventfs_srcu)) { + if (!match_event_file(ef, dentry->d_name.name)) + continue; + ret = simple_lookup(dir, dentry, flags); + create_dentry(ef, ef->d_parent, true); + break; + } + srcu_read_unlock(&eventfs_srcu, idx); + return ret; +} + +/** + * eventfs_release - called to release eventfs file/dir + * @inode: inode to be released + * @file: file to be released (not used) + */ +static int eventfs_release(struct inode *inode, struct file *file) +{ + struct tracefs_inode *ti; + struct eventfs_inode *ei; + struct eventfs_file *ef; + struct dentry *dentry; + int idx; + + ti = get_tracefs(inode); + if (!(ti->flags & TRACEFS_EVENT_INODE)) + return -EINVAL; + + ei = ti->private; + idx = srcu_read_lock(&eventfs_srcu); + list_for_each_entry_srcu(ef, &ei->e_top_files, list, + srcu_read_lock_held(&eventfs_srcu)) { + mutex_lock(&eventfs_mutex); + dentry = ef->dentry; + mutex_unlock(&eventfs_mutex); + if (dentry) + dput(dentry); + } + srcu_read_unlock(&eventfs_srcu, idx); + return dcache_dir_close(inode, file); +} + +/** + * dcache_dir_open_wrapper - eventfs open wrapper + * @inode: not used + * @file: dir to be opened (to create its child) + * + * Used to dynamically create the file/dir within @file. @file is really a + * directory and all the files/dirs of the children within @file will be + * created. If any of the files/dirs have already been created, their + * reference count will be incremented. + */ +static int dcache_dir_open_wrapper(struct inode *inode, struct file *file) +{ + struct tracefs_inode *ti; + struct eventfs_inode *ei; + struct eventfs_file *ef; + struct dentry *dentry = file_dentry(file); + struct inode *f_inode = file_inode(file); + int idx; + + ti = get_tracefs(f_inode); + if (!(ti->flags & TRACEFS_EVENT_INODE)) + return -EINVAL; + + ei = ti->private; + idx = srcu_read_lock(&eventfs_srcu); + list_for_each_entry_rcu(ef, &ei->e_top_files, list) { + create_dentry(ef, dentry, false); + } + srcu_read_unlock(&eventfs_srcu, idx); + return dcache_dir_open(inode, file); +} + +/** + * eventfs_prepare_ef - helper function to prepare eventfs_file + * @name: the name of the file/directory to create. + * @mode: the permission that the file should have. + * @fop: struct file_operations that should be used for this file/directory. + * @iop: struct inode_operations that should be used for this file/directory. + * @data: something that the caller will want to get to later on. The + * inode.i_private pointer will point to this value on the open() call. + * + * This function allocates and fills the eventfs_file structure. + */ +static struct eventfs_file *eventfs_prepare_ef(const char *name, umode_t mode, + const struct file_operations *fop, + const struct inode_operations *iop, + void *data) +{ + struct eventfs_file *ef; + + ef = kzalloc(sizeof(*ef), GFP_KERNEL); + if (!ef) + return ERR_PTR(-ENOMEM); + + ef->name = kstrdup(name, GFP_KERNEL); + if (!ef->name) { + kfree(ef); + return ERR_PTR(-ENOMEM); + } + + if (S_ISDIR(mode)) { + ef->ei = kzalloc(sizeof(*ef->ei), GFP_KERNEL); + if (!ef->ei) { + kfree(ef->name); + kfree(ef); + return ERR_PTR(-ENOMEM); + } + INIT_LIST_HEAD(&ef->ei->e_top_files); + } else { + ef->ei = NULL; + } + + ef->iop = iop; + ef->fop = fop; + ef->mode = mode; + ef->data = data; + return ef; +} + +/** + * eventfs_create_events_dir - create the trace event structure + * @name: the name of the directory to create. + * @parent: parent dentry for this file. This should be a directory dentry + * if set. If this parameter is NULL, then the directory will be + * created in the root of the tracefs filesystem. + * + * This function creates the top of the trace event directory. + */ +struct dentry *eventfs_create_events_dir(const char *name, + struct dentry *parent) +{ + struct dentry *dentry = tracefs_start_creating(name, parent); + struct eventfs_inode *ei; + struct tracefs_inode *ti; + struct inode *inode; + + if (IS_ERR(dentry)) + return dentry; + + ei = kzalloc(sizeof(*ei), GFP_KERNEL); + if (!ei) + return ERR_PTR(-ENOMEM); + inode = tracefs_get_inode(dentry->d_sb); + if (unlikely(!inode)) { + kfree(ei); + tracefs_failed_creating(dentry); + return ERR_PTR(-ENOMEM); + } + + INIT_LIST_HEAD(&ei->e_top_files); + + ti = get_tracefs(inode); + ti->flags |= TRACEFS_EVENT_INODE; + ti->private = ei; + + inode->i_mode = S_IFDIR | S_IRWXU | S_IRUGO | S_IXUGO; + inode->i_op = &eventfs_root_dir_inode_operations; + inode->i_fop = &eventfs_file_operations; + + /* directory inodes start off with i_nlink == 2 (for "." entry) */ + inc_nlink(inode); + d_instantiate(dentry, inode); + inc_nlink(dentry->d_parent->d_inode); + fsnotify_mkdir(dentry->d_parent->d_inode, dentry); + return tracefs_end_creating(dentry); +} + +/** + * eventfs_add_subsystem_dir - add eventfs subsystem_dir to list to create later + * @name: the name of the file to create. + * @parent: parent dentry for this dir. + * + * This function adds eventfs subsystem dir to list. + * And all these dirs are created on the fly when they are looked up, + * and the dentry and inodes will be removed when they are done. + */ +struct eventfs_file *eventfs_add_subsystem_dir(const char *name, + struct dentry *parent) +{ + struct tracefs_inode *ti_parent; + struct eventfs_inode *ei_parent; + struct eventfs_file *ef; + + if (!parent) + return ERR_PTR(-EINVAL); + + ti_parent = get_tracefs(parent->d_inode); + ei_parent = ti_parent->private; + + ef = eventfs_prepare_ef(name, S_IFDIR, NULL, NULL, NULL); + if (IS_ERR(ef)) + return ef; + + mutex_lock(&eventfs_mutex); + list_add_tail(&ef->list, &ei_parent->e_top_files); + ef->d_parent = parent; + mutex_unlock(&eventfs_mutex); + return ef; +} + +/** + * eventfs_add_dir - add eventfs dir to list to create later + * @name: the name of the file to create. + * @ef_parent: parent eventfs_file for this dir. + * + * This function adds eventfs dir to list. + * And all these dirs are created on the fly when they are looked up, + * and the dentry and inodes will be removed when they are done. + */ +struct eventfs_file *eventfs_add_dir(const char *name, + struct eventfs_file *ef_parent) +{ + struct eventfs_file *ef; + + if (!ef_parent) + return ERR_PTR(-EINVAL); + + ef = eventfs_prepare_ef(name, S_IFDIR, NULL, NULL, NULL); + if (IS_ERR(ef)) + return ef; + + mutex_lock(&eventfs_mutex); + list_add_tail(&ef->list, &ef_parent->ei->e_top_files); + ef->d_parent = ef_parent->dentry; + mutex_unlock(&eventfs_mutex); + return ef; +} + +/** + * eventfs_add_events_file - add the data needed to create a file for later reference + * @name: the name of the file to create. + * @mode: the permission that the file should have. + * @parent: parent dentry for this file. + * @data: something that the caller will want to get to later on. + * @fop: struct file_operations that should be used for this file. + * + * This function is used to add the information needed to create a + * dentry/inode within the top level events directory. The file created + * will have the @mode permissions. The @data will be used to fill the + * inode.i_private when the open() call is done. The dentry and inodes are + * all created when they are referenced, and removed when they are no + * longer referenced. + */ +int eventfs_add_events_file(const char *name, umode_t mode, + struct dentry *parent, void *data, + const struct file_operations *fop) +{ + struct tracefs_inode *ti; + struct eventfs_inode *ei; + struct eventfs_file *ef; + + if (!parent) + return -EINVAL; + + if (!(mode & S_IFMT)) + mode |= S_IFREG; + + if (!parent->d_inode) + return -EINVAL; + + ti = get_tracefs(parent->d_inode); + if (!(ti->flags & TRACEFS_EVENT_INODE)) + return -EINVAL; + + ei = ti->private; + ef = eventfs_prepare_ef(name, mode, fop, NULL, data); + + if (IS_ERR(ef)) + return -ENOMEM; + + mutex_lock(&eventfs_mutex); + list_add_tail(&ef->list, &ei->e_top_files); + ef->d_parent = parent; + mutex_unlock(&eventfs_mutex); + return 0; +} + +/** + * eventfs_add_file - add eventfs file to list to create later + * @name: the name of the file to create. + * @mode: the permission that the file should have. + * @ef_parent: parent eventfs_file for this file. + * @data: something that the caller will want to get to later on. + * @fop: struct file_operations that should be used for this file. + * + * This function is used to add the information needed to create a + * file within a subdirectory of the events directory. The file created + * will have the @mode permissions. The @data will be used to fill the + * inode.i_private when the open() call is done. The dentry and inodes are + * all created when they are referenced, and removed when they are no + * longer referenced. + */ +int eventfs_add_file(const char *name, umode_t mode, + struct eventfs_file *ef_parent, + void *data, + const struct file_operations *fop) +{ + struct eventfs_file *ef; + + if (!ef_parent) + return -EINVAL; + + if (!(mode & S_IFMT)) + mode |= S_IFREG; + + ef = eventfs_prepare_ef(name, mode, fop, NULL, data); + if (IS_ERR(ef)) + return -ENOMEM; + + mutex_lock(&eventfs_mutex); + list_add_tail(&ef->list, &ef_parent->ei->e_top_files); + ef->d_parent = ef_parent->dentry; + mutex_unlock(&eventfs_mutex); + return 0; +} + +static void free_ef(struct rcu_head *head) +{ + struct eventfs_file *ef = container_of(head, struct eventfs_file, rcu); + + kfree(ef->name); + kfree(ef->ei); + kfree(ef); +} + +/** + * eventfs_remove_rec - remove eventfs dir or file from list + * @ef: eventfs_file to be removed. + * @head: to create list of eventfs_file to be deleted + * @level: to check recursion depth + * + * The helper function eventfs_remove_rec() is used to clean up and free the + * associated data from eventfs for both of the added functions. + */ +static void eventfs_remove_rec(struct eventfs_file *ef, struct list_head *head, int level) +{ + struct eventfs_file *ef_child; + + if (!ef) + return; + /* + * Check recursion depth. It should never be greater than 3: + * 0 - events/ + * 1 - events/group/ + * 2 - events/group/event/ + * 3 - events/group/event/file + */ + if (WARN_ON_ONCE(level > 3)) + return; + + if (ef->ei) { + /* search for nested folders or files */ + list_for_each_entry_srcu(ef_child, &ef->ei->e_top_files, list, + lockdep_is_held(&eventfs_mutex)) { + eventfs_remove_rec(ef_child, head, level + 1); + } + } + + list_del_rcu(&ef->list); + list_add_tail(&ef->del_list, head); +} + +/** + * eventfs_remove - remove eventfs dir or file from list + * @ef: eventfs_file to be removed. + * + * This function acquire the eventfs_mutex lock and call eventfs_remove_rec() + */ +void eventfs_remove(struct eventfs_file *ef) +{ + struct eventfs_file *tmp; + LIST_HEAD(ef_del_list); + struct dentry *dentry_list = NULL; + struct dentry *dentry; + + if (!ef) + return; + + mutex_lock(&eventfs_mutex); + eventfs_remove_rec(ef, &ef_del_list, 0); + list_for_each_entry_safe(ef, tmp, &ef_del_list, del_list) { + if (ef->dentry) { + unsigned long ptr = (unsigned long)dentry_list; + + /* Keep the dentry from being freed yet */ + dget(ef->dentry); + + /* + * Paranoid: The dget() above should prevent the dentry + * from being freed and calling eventfs_set_ef_status_free(). + * But just in case, set the link list LSB pointer to 1 + * and have eventfs_set_ef_status_free() check that to + * make sure that if it does happen, it will not think + * the d_fsdata is an event_file. + * + * For this to work, no event_file should be allocated + * on a odd space, as the ef should always be allocated + * to be at least word aligned. Check for that too. + */ + WARN_ON_ONCE(ptr & 1); + + ef->dentry->d_fsdata = (void *)(ptr | 1); + dentry_list = ef->dentry; + ef->dentry = NULL; + } + call_srcu(&eventfs_srcu, &ef->rcu, free_ef); + } + mutex_unlock(&eventfs_mutex); + + while (dentry_list) { + unsigned long ptr; + + dentry = dentry_list; + ptr = (unsigned long)dentry->d_fsdata & ~1UL; + dentry_list = (struct dentry *)ptr; + dentry->d_fsdata = NULL; + d_invalidate(dentry); + mutex_lock(&eventfs_mutex); + /* dentry should now have at least a single reference */ + WARN_ONCE((int)d_count(dentry) < 1, + "dentry %p less than one reference (%d) after invalidate\n", + dentry, d_count(dentry)); + mutex_unlock(&eventfs_mutex); + dput(dentry); + } +} + +/** + * eventfs_remove_events_dir - remove eventfs dir or file from list + * @dentry: events's dentry to be removed. + * + * This function remove events main directory + */ +void eventfs_remove_events_dir(struct dentry *dentry) +{ + struct tracefs_inode *ti; + struct eventfs_inode *ei; + + if (!dentry || !dentry->d_inode) + return; + + ti = get_tracefs(dentry->d_inode); + if (!ti || !(ti->flags & TRACEFS_EVENT_INODE)) + return; + + ei = ti->private; + d_invalidate(dentry); + dput(dentry); + kfree(ei); +} diff --git a/fs/tracefs/inode.c b/fs/tracefs/inode.c index 57ac8aa4a724..de5b72216b1a 100644 --- a/fs/tracefs/inode.c +++ b/fs/tracefs/inode.c @@ -21,13 +21,33 @@ #include <linux/parser.h> #include <linux/magic.h> #include <linux/slab.h> +#include "internal.h" #define TRACEFS_DEFAULT_MODE 0700 +static struct kmem_cache *tracefs_inode_cachep __ro_after_init; static struct vfsmount *tracefs_mount; static int tracefs_mount_count; static bool tracefs_registered; +static struct inode *tracefs_alloc_inode(struct super_block *sb) +{ + struct tracefs_inode *ti; + + ti = kmem_cache_alloc(tracefs_inode_cachep, GFP_KERNEL); + if (!ti) + return NULL; + + ti->flags = 0; + + return &ti->vfs_inode; +} + +static void tracefs_free_inode(struct inode *inode) +{ + kmem_cache_free(tracefs_inode_cachep, get_tracefs(inode)); +} + static ssize_t default_read_file(struct file *file, char __user *buf, size_t count, loff_t *ppos) { @@ -127,12 +147,12 @@ static const struct inode_operations tracefs_dir_inode_operations = { .rmdir = tracefs_syscall_rmdir, }; -static struct inode *tracefs_get_inode(struct super_block *sb) +struct inode *tracefs_get_inode(struct super_block *sb) { struct inode *inode = new_inode(sb); if (inode) { inode->i_ino = get_next_ino(); - inode->i_atime = inode->i_mtime = inode->i_ctime = current_time(inode); + inode->i_atime = inode->i_mtime = inode_set_ctime_current(inode); } return inode; } @@ -290,6 +310,7 @@ static int tracefs_apply_options(struct super_block *sb, bool remount) struct tracefs_fs_info *fsi = sb->s_fs_info; struct inode *inode = d_inode(sb->s_root); struct tracefs_mount_opts *opts = &fsi->mount_opts; + umode_t tmp_mode; /* * On remount, only reset mode/uid/gid if they were provided as mount @@ -297,8 +318,9 @@ static int tracefs_apply_options(struct super_block *sb, bool remount) */ if (!remount || opts->opts & BIT(Opt_mode)) { - inode->i_mode &= ~S_IALLUGO; - inode->i_mode |= opts->mode; + tmp_mode = READ_ONCE(inode->i_mode) & ~S_IALLUGO; + tmp_mode |= opts->mode; + WRITE_ONCE(inode->i_mode, tmp_mode); } if (!remount || opts->opts & BIT(Opt_uid)) @@ -346,11 +368,31 @@ static int tracefs_show_options(struct seq_file *m, struct dentry *root) } static const struct super_operations tracefs_super_operations = { + .alloc_inode = tracefs_alloc_inode, + .free_inode = tracefs_free_inode, + .drop_inode = generic_delete_inode, .statfs = simple_statfs, .remount_fs = tracefs_remount, .show_options = tracefs_show_options, }; +static void tracefs_dentry_iput(struct dentry *dentry, struct inode *inode) +{ + struct tracefs_inode *ti; + + if (!dentry || !inode) + return; + + ti = get_tracefs(inode); + if (ti && ti->flags & TRACEFS_EVENT_INODE) + eventfs_set_ef_status_free(dentry); + iput(inode); +} + +static const struct dentry_operations tracefs_dentry_operations = { + .d_iput = tracefs_dentry_iput, +}; + static int trace_fill_super(struct super_block *sb, void *data, int silent) { static const struct tree_descr trace_files[] = {{""}}; @@ -373,6 +415,7 @@ static int trace_fill_super(struct super_block *sb, void *data, int silent) goto fail; sb->s_op = &tracefs_super_operations; + sb->s_d_op = &tracefs_dentry_operations; tracefs_apply_options(sb, false); @@ -399,7 +442,7 @@ static struct file_system_type trace_fs_type = { }; MODULE_ALIAS_FS("tracefs"); -static struct dentry *start_creating(const char *name, struct dentry *parent) +struct dentry *tracefs_start_creating(const char *name, struct dentry *parent) { struct dentry *dentry; int error; @@ -437,7 +480,7 @@ static struct dentry *start_creating(const char *name, struct dentry *parent) return dentry; } -static struct dentry *failed_creating(struct dentry *dentry) +struct dentry *tracefs_failed_creating(struct dentry *dentry) { inode_unlock(d_inode(dentry->d_parent)); dput(dentry); @@ -445,13 +488,87 @@ static struct dentry *failed_creating(struct dentry *dentry) return NULL; } -static struct dentry *end_creating(struct dentry *dentry) +struct dentry *tracefs_end_creating(struct dentry *dentry) { inode_unlock(d_inode(dentry->d_parent)); return dentry; } /** + * eventfs_start_creating - start the process of creating a dentry + * @name: Name of the file created for the dentry + * @parent: The parent dentry where this dentry will be created + * + * This is a simple helper function for the dynamically created eventfs + * files. When the directory of the eventfs files are accessed, their + * dentries are created on the fly. This function is used to start that + * process. + */ +struct dentry *eventfs_start_creating(const char *name, struct dentry *parent) +{ + struct dentry *dentry; + int error; + + error = simple_pin_fs(&trace_fs_type, &tracefs_mount, + &tracefs_mount_count); + if (error) + return ERR_PTR(error); + + /* + * If the parent is not specified, we create it in the root. + * We need the root dentry to do this, which is in the super + * block. A pointer to that is in the struct vfsmount that we + * have around. + */ + if (!parent) + parent = tracefs_mount->mnt_root; + + if (unlikely(IS_DEADDIR(parent->d_inode))) + dentry = ERR_PTR(-ENOENT); + else + dentry = lookup_one_len(name, parent, strlen(name)); + + if (!IS_ERR(dentry) && dentry->d_inode) { + dput(dentry); + dentry = ERR_PTR(-EEXIST); + } + + if (IS_ERR(dentry)) + simple_release_fs(&tracefs_mount, &tracefs_mount_count); + + return dentry; +} + +/** + * eventfs_failed_creating - clean up a failed eventfs dentry creation + * @dentry: The dentry to clean up + * + * If after calling eventfs_start_creating(), a failure is detected, the + * resources created by eventfs_start_creating() needs to be cleaned up. In + * that case, this function should be called to perform that clean up. + */ +struct dentry *eventfs_failed_creating(struct dentry *dentry) +{ + dput(dentry); + simple_release_fs(&tracefs_mount, &tracefs_mount_count); + return NULL; +} + +/** + * eventfs_end_creating - Finish the process of creating a eventfs dentry + * @dentry: The dentry that has successfully been created. + * + * This function is currently just a place holder to match + * eventfs_start_creating(). In case any synchronization needs to be added, + * this function will be used to implement that without having to modify + * the callers of eventfs_start_creating(). + */ +struct dentry *eventfs_end_creating(struct dentry *dentry) +{ + return dentry; +} + +/** * tracefs_create_file - create a file in the tracefs filesystem * @name: a pointer to a string containing the name of the file to create. * @mode: the permission that the file should have. @@ -490,14 +607,14 @@ struct dentry *tracefs_create_file(const char *name, umode_t mode, if (!(mode & S_IFMT)) mode |= S_IFREG; BUG_ON(!S_ISREG(mode)); - dentry = start_creating(name, parent); + dentry = tracefs_start_creating(name, parent); if (IS_ERR(dentry)) return NULL; inode = tracefs_get_inode(dentry->d_sb); if (unlikely(!inode)) - return failed_creating(dentry); + return tracefs_failed_creating(dentry); inode->i_mode = mode; inode->i_fop = fops ? fops : &tracefs_file_operations; @@ -506,13 +623,13 @@ struct dentry *tracefs_create_file(const char *name, umode_t mode, inode->i_gid = d_inode(dentry->d_parent)->i_gid; d_instantiate(dentry, inode); fsnotify_create(d_inode(dentry->d_parent), dentry); - return end_creating(dentry); + return tracefs_end_creating(dentry); } static struct dentry *__create_dir(const char *name, struct dentry *parent, const struct inode_operations *ops) { - struct dentry *dentry = start_creating(name, parent); + struct dentry *dentry = tracefs_start_creating(name, parent); struct inode *inode; if (IS_ERR(dentry)) @@ -520,7 +637,7 @@ static struct dentry *__create_dir(const char *name, struct dentry *parent, inode = tracefs_get_inode(dentry->d_sb); if (unlikely(!inode)) - return failed_creating(dentry); + return tracefs_failed_creating(dentry); /* Do not set bits for OTH */ inode->i_mode = S_IFDIR | S_IRWXU | S_IRUSR| S_IRGRP | S_IXUSR | S_IXGRP; @@ -534,7 +651,7 @@ static struct dentry *__create_dir(const char *name, struct dentry *parent, d_instantiate(dentry, inode); inc_nlink(d_inode(dentry->d_parent)); fsnotify_mkdir(d_inode(dentry->d_parent), dentry); - return end_creating(dentry); + return tracefs_end_creating(dentry); } /** @@ -628,10 +745,26 @@ bool tracefs_initialized(void) return tracefs_registered; } +static void init_once(void *foo) +{ + struct tracefs_inode *ti = (struct tracefs_inode *) foo; + + inode_init_once(&ti->vfs_inode); +} + static int __init tracefs_init(void) { int retval; + tracefs_inode_cachep = kmem_cache_create("tracefs_inode_cache", + sizeof(struct tracefs_inode), + 0, (SLAB_RECLAIM_ACCOUNT| + SLAB_MEM_SPREAD| + SLAB_ACCOUNT), + init_once); + if (!tracefs_inode_cachep) + return -ENOMEM; + retval = sysfs_create_mount_point(kernel_kobj, "tracing"); if (retval) return -EINVAL; diff --git a/fs/tracefs/internal.h b/fs/tracefs/internal.h new file mode 100644 index 000000000000..69c2b1d87c46 --- /dev/null +++ b/fs/tracefs/internal.h @@ -0,0 +1,29 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef _TRACEFS_INTERNAL_H +#define _TRACEFS_INTERNAL_H + +enum { + TRACEFS_EVENT_INODE = BIT(1), +}; + +struct tracefs_inode { + unsigned long flags; + void *private; + struct inode vfs_inode; +}; + +static inline struct tracefs_inode *get_tracefs(const struct inode *inode) +{ + return container_of(inode, struct tracefs_inode, vfs_inode); +} + +struct dentry *tracefs_start_creating(const char *name, struct dentry *parent); +struct dentry *tracefs_end_creating(struct dentry *dentry); +struct dentry *tracefs_failed_creating(struct dentry *dentry); +struct inode *tracefs_get_inode(struct super_block *sb); +struct dentry *eventfs_start_creating(const char *name, struct dentry *parent); +struct dentry *eventfs_failed_creating(struct dentry *dentry); +struct dentry *eventfs_end_creating(struct dentry *dentry); +void eventfs_set_ef_status_free(struct dentry *dentry); + +#endif /* _TRACEFS_INTERNAL_H */ diff --git a/fs/ubifs/debug.c b/fs/ubifs/debug.c index 9c9d3f0e36a4..eef9e527d9ff 100644 --- a/fs/ubifs/debug.c +++ b/fs/ubifs/debug.c @@ -243,8 +243,8 @@ void ubifs_dump_inode(struct ubifs_info *c, const struct inode *inode) (unsigned int)inode->i_mtime.tv_sec, (unsigned int)inode->i_mtime.tv_nsec); pr_err("\tctime %u.%u\n", - (unsigned int)inode->i_ctime.tv_sec, - (unsigned int)inode->i_ctime.tv_nsec); + (unsigned int) inode_get_ctime(inode).tv_sec, + (unsigned int) inode_get_ctime(inode).tv_nsec); pr_err("\tcreat_sqnum %llu\n", ui->creat_sqnum); pr_err("\txattr_size %u\n", ui->xattr_size); pr_err("\txattr_cnt %u\n", ui->xattr_cnt); diff --git a/fs/ubifs/dir.c b/fs/ubifs/dir.c index ef0499edc248..2f48c58d47cd 100644 --- a/fs/ubifs/dir.c +++ b/fs/ubifs/dir.c @@ -96,8 +96,7 @@ struct inode *ubifs_new_inode(struct ubifs_info *c, struct inode *dir, inode->i_flags |= S_NOCMTIME; inode_init_owner(&nop_mnt_idmap, inode, dir, mode); - inode->i_mtime = inode->i_atime = inode->i_ctime = - current_time(inode); + inode->i_mtime = inode->i_atime = inode_set_ctime_current(inode); inode->i_mapping->nrpages = 0; if (!is_xattr) { @@ -325,7 +324,7 @@ static int ubifs_create(struct mnt_idmap *idmap, struct inode *dir, mutex_lock(&dir_ui->ui_mutex); dir->i_size += sz_change; dir_ui->ui_size = dir->i_size; - dir->i_mtime = dir->i_ctime = inode->i_ctime; + dir->i_mtime = inode_set_ctime_to_ts(dir, inode_get_ctime(inode)); err = ubifs_jnl_update(c, dir, &nm, inode, 0, 0); if (err) goto out_cancel; @@ -765,10 +764,10 @@ static int ubifs_link(struct dentry *old_dentry, struct inode *dir, inc_nlink(inode); ihold(inode); - inode->i_ctime = current_time(inode); + inode_set_ctime_current(inode); dir->i_size += sz_change; dir_ui->ui_size = dir->i_size; - dir->i_mtime = dir->i_ctime = inode->i_ctime; + dir->i_mtime = inode_set_ctime_to_ts(dir, inode_get_ctime(inode)); err = ubifs_jnl_update(c, dir, &nm, inode, 0, 0); if (err) goto out_cancel; @@ -838,11 +837,11 @@ static int ubifs_unlink(struct inode *dir, struct dentry *dentry) } lock_2_inodes(dir, inode); - inode->i_ctime = current_time(dir); + inode_set_ctime_current(inode); drop_nlink(inode); dir->i_size -= sz_change; dir_ui->ui_size = dir->i_size; - dir->i_mtime = dir->i_ctime = inode->i_ctime; + dir->i_mtime = inode_set_ctime_to_ts(dir, inode_get_ctime(inode)); err = ubifs_jnl_update(c, dir, &nm, inode, 1, 0); if (err) goto out_cancel; @@ -940,12 +939,12 @@ static int ubifs_rmdir(struct inode *dir, struct dentry *dentry) } lock_2_inodes(dir, inode); - inode->i_ctime = current_time(dir); + inode_set_ctime_current(inode); clear_nlink(inode); drop_nlink(dir); dir->i_size -= sz_change; dir_ui->ui_size = dir->i_size; - dir->i_mtime = dir->i_ctime = inode->i_ctime; + dir->i_mtime = inode_set_ctime_to_ts(dir, inode_get_ctime(inode)); err = ubifs_jnl_update(c, dir, &nm, inode, 1, 0); if (err) goto out_cancel; @@ -1019,7 +1018,7 @@ static int ubifs_mkdir(struct mnt_idmap *idmap, struct inode *dir, inc_nlink(dir); dir->i_size += sz_change; dir_ui->ui_size = dir->i_size; - dir->i_mtime = dir->i_ctime = inode->i_ctime; + dir->i_mtime = inode_set_ctime_to_ts(dir, inode_get_ctime(inode)); err = ubifs_jnl_update(c, dir, &nm, inode, 0, 0); if (err) { ubifs_err(c, "cannot create directory, error %d", err); @@ -1110,7 +1109,7 @@ static int ubifs_mknod(struct mnt_idmap *idmap, struct inode *dir, mutex_lock(&dir_ui->ui_mutex); dir->i_size += sz_change; dir_ui->ui_size = dir->i_size; - dir->i_mtime = dir->i_ctime = inode->i_ctime; + dir->i_mtime = inode_set_ctime_to_ts(dir, inode_get_ctime(inode)); err = ubifs_jnl_update(c, dir, &nm, inode, 0, 0); if (err) goto out_cancel; @@ -1210,7 +1209,7 @@ static int ubifs_symlink(struct mnt_idmap *idmap, struct inode *dir, mutex_lock(&dir_ui->ui_mutex); dir->i_size += sz_change; dir_ui->ui_size = dir->i_size; - dir->i_mtime = dir->i_ctime = inode->i_ctime; + dir->i_mtime = inode_set_ctime_to_ts(dir, inode_get_ctime(inode)); err = ubifs_jnl_update(c, dir, &nm, inode, 0, 0); if (err) goto out_cancel; @@ -1298,7 +1297,6 @@ static int do_rename(struct inode *old_dir, struct dentry *old_dentry, struct ubifs_budget_req ino_req = { .dirtied_ino = 1, .dirtied_ino_d = ALIGN(old_inode_ui->data_len, 8) }; struct ubifs_budget_req wht_req; - struct timespec64 time; unsigned int saved_nlink; struct fscrypt_name old_nm, new_nm; @@ -1414,8 +1412,7 @@ static int do_rename(struct inode *old_dir, struct dentry *old_dentry, * Like most other Unix systems, set the @i_ctime for inodes on a * rename. */ - time = current_time(old_dir); - old_inode->i_ctime = time; + simple_rename_timestamp(old_dir, old_dentry, new_dir, new_dentry); /* We must adjust parent link count when renaming directories */ if (is_dir) { @@ -1444,13 +1441,11 @@ static int do_rename(struct inode *old_dir, struct dentry *old_dentry, old_dir->i_size -= old_sz; ubifs_inode(old_dir)->ui_size = old_dir->i_size; - old_dir->i_mtime = old_dir->i_ctime = time; - new_dir->i_mtime = new_dir->i_ctime = time; /* * And finally, if we unlinked a direntry which happened to have the * same name as the moved direntry, we have to decrement @i_nlink of - * the unlinked inode and change its ctime. + * the unlinked inode. */ if (unlink) { /* @@ -1462,7 +1457,6 @@ static int do_rename(struct inode *old_dir, struct dentry *old_dentry, clear_nlink(new_inode); else drop_nlink(new_inode); - new_inode->i_ctime = time; } else { new_dir->i_size += new_sz; ubifs_inode(new_dir)->ui_size = new_dir->i_size; @@ -1557,7 +1551,6 @@ static int ubifs_xrename(struct inode *old_dir, struct dentry *old_dentry, int sync = IS_DIRSYNC(old_dir) || IS_DIRSYNC(new_dir); struct inode *fst_inode = d_inode(old_dentry); struct inode *snd_inode = d_inode(new_dentry); - struct timespec64 time; int err; struct fscrypt_name fst_nm, snd_nm; @@ -1588,11 +1581,7 @@ static int ubifs_xrename(struct inode *old_dir, struct dentry *old_dentry, lock_4_inodes(old_dir, new_dir, NULL, NULL); - time = current_time(old_dir); - fst_inode->i_ctime = time; - snd_inode->i_ctime = time; - old_dir->i_mtime = old_dir->i_ctime = time; - new_dir->i_mtime = new_dir->i_ctime = time; + simple_rename_timestamp(old_dir, old_dentry, new_dir, new_dentry); if (old_dir != new_dir) { if (S_ISDIR(fst_inode->i_mode) && !S_ISDIR(snd_inode->i_mode)) { @@ -1665,7 +1654,7 @@ int ubifs_getattr(struct mnt_idmap *idmap, const struct path *path, STATX_ATTR_ENCRYPTED | STATX_ATTR_IMMUTABLE); - generic_fillattr(&nop_mnt_idmap, inode, stat); + generic_fillattr(&nop_mnt_idmap, request_mask, inode, stat); stat->blksize = UBIFS_BLOCK_SIZE; stat->size = ui->ui_size; diff --git a/fs/ubifs/file.c b/fs/ubifs/file.c index 6738fe43040b..e5382f0b2587 100644 --- a/fs/ubifs/file.c +++ b/fs/ubifs/file.c @@ -1092,7 +1092,7 @@ static void do_attr_changes(struct inode *inode, const struct iattr *attr) if (attr->ia_valid & ATTR_MTIME) inode->i_mtime = attr->ia_mtime; if (attr->ia_valid & ATTR_CTIME) - inode->i_ctime = attr->ia_ctime; + inode_set_ctime_to_ts(inode, attr->ia_ctime); if (attr->ia_valid & ATTR_MODE) { umode_t mode = attr->ia_mode; @@ -1192,7 +1192,7 @@ static int do_truncation(struct ubifs_info *c, struct inode *inode, mutex_lock(&ui->ui_mutex); ui->ui_size = inode->i_size; /* Truncation changes inode [mc]time */ - inode->i_mtime = inode->i_ctime = current_time(inode); + inode->i_mtime = inode_set_ctime_current(inode); /* Other attributes may be changed at the same time as well */ do_attr_changes(inode, attr); err = ubifs_jnl_truncate(c, inode, old_size, new_size); @@ -1239,7 +1239,7 @@ static int do_setattr(struct ubifs_info *c, struct inode *inode, mutex_lock(&ui->ui_mutex); if (attr->ia_valid & ATTR_SIZE) { /* Truncation changes inode [mc]time */ - inode->i_mtime = inode->i_ctime = current_time(inode); + inode->i_mtime = inode_set_ctime_current(inode); /* 'truncate_setsize()' changed @i_size, update @ui_size */ ui->ui_size = inode->i_size; } @@ -1364,8 +1364,10 @@ out: static inline int mctime_update_needed(const struct inode *inode, const struct timespec64 *now) { + struct timespec64 ctime = inode_get_ctime(inode); + if (!timespec64_equal(&inode->i_mtime, now) || - !timespec64_equal(&inode->i_ctime, now)) + !timespec64_equal(&ctime, now)) return 1; return 0; } @@ -1376,8 +1378,7 @@ static inline int mctime_update_needed(const struct inode *inode, * * This function updates time of the inode. */ -int ubifs_update_time(struct inode *inode, struct timespec64 *time, - int flags) +int ubifs_update_time(struct inode *inode, int flags) { struct ubifs_inode *ui = ubifs_inode(inode); struct ubifs_info *c = inode->i_sb->s_fs_info; @@ -1385,21 +1386,17 @@ int ubifs_update_time(struct inode *inode, struct timespec64 *time, .dirtied_ino_d = ALIGN(ui->data_len, 8) }; int err, release; - if (!IS_ENABLED(CONFIG_UBIFS_ATIME_SUPPORT)) - return generic_update_time(inode, time, flags); + if (!IS_ENABLED(CONFIG_UBIFS_ATIME_SUPPORT)) { + generic_update_time(inode, flags); + return 0; + } err = ubifs_budget_space(c, &req); if (err) return err; mutex_lock(&ui->ui_mutex); - if (flags & S_ATIME) - inode->i_atime = *time; - if (flags & S_CTIME) - inode->i_ctime = *time; - if (flags & S_MTIME) - inode->i_mtime = *time; - + inode_update_timestamps(inode, flags); release = ui->dirty; __mark_inode_dirty(inode, I_DIRTY_SYNC); mutex_unlock(&ui->ui_mutex); @@ -1432,7 +1429,7 @@ static int update_mctime(struct inode *inode) return err; mutex_lock(&ui->ui_mutex); - inode->i_mtime = inode->i_ctime = current_time(inode); + inode->i_mtime = inode_set_ctime_current(inode); release = ui->dirty; mark_inode_dirty_sync(inode); mutex_unlock(&ui->ui_mutex); @@ -1570,7 +1567,7 @@ static vm_fault_t ubifs_vm_page_mkwrite(struct vm_fault *vmf) struct ubifs_inode *ui = ubifs_inode(inode); mutex_lock(&ui->ui_mutex); - inode->i_mtime = inode->i_ctime = current_time(inode); + inode->i_mtime = inode_set_ctime_current(inode); release = ui->dirty; mark_inode_dirty_sync(inode); mutex_unlock(&ui->ui_mutex); diff --git a/fs/ubifs/ioctl.c b/fs/ubifs/ioctl.c index 67c5108abd89..d79cabe193c3 100644 --- a/fs/ubifs/ioctl.c +++ b/fs/ubifs/ioctl.c @@ -118,7 +118,7 @@ static int setflags(struct inode *inode, int flags) ui->flags &= ~ioctl2ubifs(UBIFS_SETTABLE_IOCTL_FLAGS); ui->flags |= ioctl2ubifs(flags); ubifs_set_inode_flags(inode); - inode->i_ctime = current_time(inode); + inode_set_ctime_current(inode); release = ui->dirty; mark_inode_dirty_sync(inode); mutex_unlock(&ui->ui_mutex); diff --git a/fs/ubifs/journal.c b/fs/ubifs/journal.c index dc52ac0f4a34..ffc9beee7be6 100644 --- a/fs/ubifs/journal.c +++ b/fs/ubifs/journal.c @@ -454,8 +454,8 @@ static void pack_inode(struct ubifs_info *c, struct ubifs_ino_node *ino, ino->creat_sqnum = cpu_to_le64(ui->creat_sqnum); ino->atime_sec = cpu_to_le64(inode->i_atime.tv_sec); ino->atime_nsec = cpu_to_le32(inode->i_atime.tv_nsec); - ino->ctime_sec = cpu_to_le64(inode->i_ctime.tv_sec); - ino->ctime_nsec = cpu_to_le32(inode->i_ctime.tv_nsec); + ino->ctime_sec = cpu_to_le64(inode_get_ctime(inode).tv_sec); + ino->ctime_nsec = cpu_to_le32(inode_get_ctime(inode).tv_nsec); ino->mtime_sec = cpu_to_le64(inode->i_mtime.tv_sec); ino->mtime_nsec = cpu_to_le32(inode->i_mtime.tv_nsec); ino->uid = cpu_to_le32(i_uid_read(inode)); diff --git a/fs/ubifs/super.c b/fs/ubifs/super.c index 32cb14759796..b08fb28d16b5 100644 --- a/fs/ubifs/super.c +++ b/fs/ubifs/super.c @@ -146,8 +146,8 @@ struct inode *ubifs_iget(struct super_block *sb, unsigned long inum) inode->i_atime.tv_nsec = le32_to_cpu(ino->atime_nsec); inode->i_mtime.tv_sec = (int64_t)le64_to_cpu(ino->mtime_sec); inode->i_mtime.tv_nsec = le32_to_cpu(ino->mtime_nsec); - inode->i_ctime.tv_sec = (int64_t)le64_to_cpu(ino->ctime_sec); - inode->i_ctime.tv_nsec = le32_to_cpu(ino->ctime_nsec); + inode_set_ctime(inode, (int64_t)le64_to_cpu(ino->ctime_sec), + le32_to_cpu(ino->ctime_nsec)); inode->i_mode = le32_to_cpu(ino->mode); inode->i_size = le64_to_cpu(ino->size); diff --git a/fs/ubifs/ubifs.h b/fs/ubifs/ubifs.h index 4c36044140e7..ebb3ad6b5e7e 100644 --- a/fs/ubifs/ubifs.h +++ b/fs/ubifs/ubifs.h @@ -2027,7 +2027,7 @@ int ubifs_calc_dark(const struct ubifs_info *c, int spc); int ubifs_fsync(struct file *file, loff_t start, loff_t end, int datasync); int ubifs_setattr(struct mnt_idmap *idmap, struct dentry *dentry, struct iattr *attr); -int ubifs_update_time(struct inode *inode, struct timespec64 *time, int flags); +int ubifs_update_time(struct inode *inode, int flags); /* dir.c */ struct inode *ubifs_new_inode(struct ubifs_info *c, struct inode *dir, diff --git a/fs/ubifs/xattr.c b/fs/ubifs/xattr.c index 349228dd1191..406c82eab513 100644 --- a/fs/ubifs/xattr.c +++ b/fs/ubifs/xattr.c @@ -134,7 +134,7 @@ static int create_xattr(struct ubifs_info *c, struct inode *host, ui->data_len = size; mutex_lock(&host_ui->ui_mutex); - host->i_ctime = current_time(host); + inode_set_ctime_current(host); host_ui->xattr_cnt += 1; host_ui->xattr_size += CALC_DENT_SIZE(fname_len(nm)); host_ui->xattr_size += CALC_XATTR_BYTES(size); @@ -215,7 +215,7 @@ static int change_xattr(struct ubifs_info *c, struct inode *host, ui->data_len = size; mutex_lock(&host_ui->ui_mutex); - host->i_ctime = current_time(host); + inode_set_ctime_current(host); host_ui->xattr_size -= CALC_XATTR_BYTES(old_size); host_ui->xattr_size += CALC_XATTR_BYTES(size); @@ -474,7 +474,7 @@ static int remove_xattr(struct ubifs_info *c, struct inode *host, return err; mutex_lock(&host_ui->ui_mutex); - host->i_ctime = current_time(host); + inode_set_ctime_current(host); host_ui->xattr_cnt -= 1; host_ui->xattr_size -= CALC_DENT_SIZE(fname_len(nm)); host_ui->xattr_size -= CALC_XATTR_BYTES(ui->data_len); diff --git a/fs/udf/Kconfig b/fs/udf/Kconfig index 82e8bfa2dfd9..8f7ce30d47fd 100644 --- a/fs/udf/Kconfig +++ b/fs/udf/Kconfig @@ -1,6 +1,7 @@ # SPDX-License-Identifier: GPL-2.0-only config UDF_FS tristate "UDF file system support" + select BUFFER_HEAD select CRC_ITU_T select NLS select LEGACY_DIRECT_IO diff --git a/fs/udf/directory.c b/fs/udf/directory.c index 1c775e072b2f..93153665eb37 100644 --- a/fs/udf/directory.c +++ b/fs/udf/directory.c @@ -95,7 +95,7 @@ static int udf_copy_fi(struct udf_fileident_iter *iter) } off = iter->pos & (blksize - 1); - len = min_t(int, sizeof(struct fileIdentDesc), blksize - off); + len = min_t(u32, sizeof(struct fileIdentDesc), blksize - off); memcpy(&iter->fi, iter->bh[0]->b_data + off, len); if (len < sizeof(struct fileIdentDesc)) memcpy((char *)(&iter->fi) + len, iter->bh[1]->b_data, diff --git a/fs/udf/file.c b/fs/udf/file.c index 0292d75e60cc..0ceac4b5937c 100644 --- a/fs/udf/file.c +++ b/fs/udf/file.c @@ -65,7 +65,7 @@ static vm_fault_t udf_page_mkwrite(struct vm_fault *vmf) err = __block_write_begin(page, 0, end, udf_get_block); if (err) { unlock_page(page); - ret = block_page_mkwrite_return(err); + ret = vmf_fs_error(err); goto out_unlock; } diff --git a/fs/udf/ialloc.c b/fs/udf/ialloc.c index 5f7ac8c84798..6b558cbbeb6b 100644 --- a/fs/udf/ialloc.c +++ b/fs/udf/ialloc.c @@ -100,7 +100,7 @@ struct inode *udf_new_inode(struct inode *dir, umode_t mode) iinfo->i_alloc_type = ICBTAG_FLAG_AD_SHORT; else iinfo->i_alloc_type = ICBTAG_FLAG_AD_LONG; - inode->i_mtime = inode->i_atime = inode->i_ctime = current_time(inode); + inode->i_mtime = inode->i_atime = inode_set_ctime_current(inode); iinfo->i_crtime = inode->i_mtime; if (unlikely(insert_inode_locked(inode) < 0)) { make_bad_inode(inode); diff --git a/fs/udf/inode.c b/fs/udf/inode.c index 28cdfc57d946..a17a6184cc39 100644 --- a/fs/udf/inode.c +++ b/fs/udf/inode.c @@ -352,8 +352,6 @@ int udf_expand_file_adinicb(struct inode *inode) iinfo->i_alloc_type = ICBTAG_FLAG_AD_SHORT; else iinfo->i_alloc_type = ICBTAG_FLAG_AD_LONG; - /* from now on we have normal address_space methods */ - inode->i_data.a_ops = &udf_aops; up_write(&iinfo->i_data_sem); mark_inode_dirty(inode); return 0; @@ -910,7 +908,7 @@ static int inode_getblk(struct inode *inode, struct udf_map_rq *map) map->oflags = UDF_BLK_NEW | UDF_BLK_MAPPED; iinfo->i_next_alloc_block = map->lblk + 1; iinfo->i_next_alloc_goal = newblocknum + 1; - inode->i_ctime = current_time(inode); + inode_set_ctime_current(inode); if (IS_SYNC(inode)) udf_sync_inode(inode); @@ -1298,7 +1296,7 @@ set_size: goto out_unlock; } update_time: - inode->i_mtime = inode->i_ctime = current_time(inode); + inode->i_mtime = inode_set_ctime_current(inode); if (IS_SYNC(inode)) udf_sync_inode(inode); else @@ -1329,6 +1327,7 @@ static int udf_read_inode(struct inode *inode, bool hidden_inode) int bs = inode->i_sb->s_blocksize; int ret = -EIO; uint32_t uid, gid; + struct timespec64 ctime; reread: if (iloc->partitionReferenceNum >= sbi->s_partitions) { @@ -1507,7 +1506,8 @@ reread: udf_disk_stamp_to_time(&inode->i_atime, fe->accessTime); udf_disk_stamp_to_time(&inode->i_mtime, fe->modificationTime); - udf_disk_stamp_to_time(&inode->i_ctime, fe->attrTime); + udf_disk_stamp_to_time(&ctime, fe->attrTime); + inode_set_ctime_to_ts(inode, ctime); iinfo->i_unique = le64_to_cpu(fe->uniqueID); iinfo->i_lenEAttr = le32_to_cpu(fe->lengthExtendedAttr); @@ -1522,7 +1522,8 @@ reread: udf_disk_stamp_to_time(&inode->i_atime, efe->accessTime); udf_disk_stamp_to_time(&inode->i_mtime, efe->modificationTime); udf_disk_stamp_to_time(&iinfo->i_crtime, efe->createTime); - udf_disk_stamp_to_time(&inode->i_ctime, efe->attrTime); + udf_disk_stamp_to_time(&ctime, efe->attrTime); + inode_set_ctime_to_ts(inode, ctime); iinfo->i_unique = le64_to_cpu(efe->uniqueID); iinfo->i_lenEAttr = le32_to_cpu(efe->lengthExtendedAttr); @@ -1799,7 +1800,7 @@ static int udf_update_inode(struct inode *inode, int do_sync) udf_time_to_disk_stamp(&fe->accessTime, inode->i_atime); udf_time_to_disk_stamp(&fe->modificationTime, inode->i_mtime); - udf_time_to_disk_stamp(&fe->attrTime, inode->i_ctime); + udf_time_to_disk_stamp(&fe->attrTime, inode_get_ctime(inode)); memset(&(fe->impIdent), 0, sizeof(struct regid)); strcpy(fe->impIdent.ident, UDF_ID_DEVELOPER); fe->impIdent.identSuffix[0] = UDF_OS_CLASS_UNIX; @@ -1830,12 +1831,12 @@ static int udf_update_inode(struct inode *inode, int do_sync) udf_adjust_time(iinfo, inode->i_atime); udf_adjust_time(iinfo, inode->i_mtime); - udf_adjust_time(iinfo, inode->i_ctime); + udf_adjust_time(iinfo, inode_get_ctime(inode)); udf_time_to_disk_stamp(&efe->accessTime, inode->i_atime); udf_time_to_disk_stamp(&efe->modificationTime, inode->i_mtime); udf_time_to_disk_stamp(&efe->createTime, iinfo->i_crtime); - udf_time_to_disk_stamp(&efe->attrTime, inode->i_ctime); + udf_time_to_disk_stamp(&efe->attrTime, inode_get_ctime(inode)); memset(&(efe->impIdent), 0, sizeof(efe->impIdent)); strcpy(efe->impIdent.ident, UDF_ID_DEVELOPER); diff --git a/fs/udf/namei.c b/fs/udf/namei.c index a95579b043ab..ae55ab8859b6 100644 --- a/fs/udf/namei.c +++ b/fs/udf/namei.c @@ -365,7 +365,7 @@ static int udf_add_nondir(struct dentry *dentry, struct inode *inode) *(__le32 *)((struct allocDescImpUse *)iter.fi.icb.impUse)->impUse = cpu_to_le32(iinfo->i_unique & 0x00000000FFFFFFFFUL); udf_fiiter_write_fi(&iter, NULL); - dir->i_ctime = dir->i_mtime = current_time(dir); + dir->i_mtime = inode_set_ctime_current(dir); mark_inode_dirty(dir); udf_fiiter_release(&iter); udf_add_fid_counter(dir->i_sb, false, 1); @@ -471,7 +471,7 @@ static int udf_mkdir(struct mnt_idmap *idmap, struct inode *dir, udf_fiiter_release(&iter); udf_add_fid_counter(dir->i_sb, true, 1); inc_nlink(dir); - dir->i_ctime = dir->i_mtime = current_time(dir); + dir->i_mtime = inode_set_ctime_current(dir); mark_inode_dirty(dir); d_instantiate_new(dentry, inode); @@ -523,8 +523,8 @@ static int udf_rmdir(struct inode *dir, struct dentry *dentry) inode->i_size = 0; inode_dec_link_count(dir); udf_add_fid_counter(dir->i_sb, true, -1); - inode->i_ctime = dir->i_ctime = dir->i_mtime = - current_time(inode); + dir->i_mtime = inode_set_ctime_to_ts(dir, + inode_set_ctime_current(inode)); mark_inode_dirty(dir); ret = 0; end_rmdir: @@ -555,11 +555,11 @@ static int udf_unlink(struct inode *dir, struct dentry *dentry) set_nlink(inode, 1); } udf_fiiter_delete_entry(&iter); - dir->i_ctime = dir->i_mtime = current_time(dir); + dir->i_mtime = inode_set_ctime_current(dir); mark_inode_dirty(dir); inode_dec_link_count(inode); udf_add_fid_counter(dir->i_sb, false, -1); - inode->i_ctime = dir->i_ctime; + inode_set_ctime_to_ts(inode, inode_get_ctime(dir)); ret = 0; end_unlink: udf_fiiter_release(&iter); @@ -746,9 +746,9 @@ static int udf_link(struct dentry *old_dentry, struct inode *dir, inc_nlink(inode); udf_add_fid_counter(dir->i_sb, false, 1); - inode->i_ctime = current_time(inode); + inode_set_ctime_current(inode); mark_inode_dirty(inode); - dir->i_ctime = dir->i_mtime = current_time(dir); + dir->i_mtime = inode_set_ctime_current(dir); mark_inode_dirty(dir); ihold(inode); d_instantiate(dentry, inode); @@ -833,7 +833,7 @@ static int udf_rename(struct mnt_idmap *idmap, struct inode *old_dir, * Like most other Unix systems, set the ctime for inodes on a * rename. */ - old_inode->i_ctime = current_time(old_inode); + inode_set_ctime_current(old_inode); mark_inode_dirty(old_inode); /* @@ -861,13 +861,13 @@ static int udf_rename(struct mnt_idmap *idmap, struct inode *old_dir, } if (new_inode) { - new_inode->i_ctime = current_time(new_inode); + inode_set_ctime_current(new_inode); inode_dec_link_count(new_inode); udf_add_fid_counter(old_dir->i_sb, S_ISDIR(new_inode->i_mode), -1); } - old_dir->i_ctime = old_dir->i_mtime = current_time(old_dir); - new_dir->i_ctime = new_dir->i_mtime = current_time(new_dir); + old_dir->i_mtime = inode_set_ctime_current(old_dir); + new_dir->i_mtime = inode_set_ctime_current(new_dir); mark_inode_dirty(old_dir); mark_inode_dirty(new_dir); diff --git a/fs/udf/symlink.c b/fs/udf/symlink.c index 779b5c2c75f6..f7eaf7b14594 100644 --- a/fs/udf/symlink.c +++ b/fs/udf/symlink.c @@ -149,7 +149,7 @@ static int udf_symlink_getattr(struct mnt_idmap *idmap, struct inode *inode = d_backing_inode(dentry); struct page *page; - generic_fillattr(&nop_mnt_idmap, inode, stat); + generic_fillattr(&nop_mnt_idmap, request_mask, inode, stat); page = read_mapping_page(inode->i_mapping, 0, NULL); if (IS_ERR(page)) return PTR_ERR(page); diff --git a/fs/ufs/Kconfig b/fs/ufs/Kconfig index 6d30adb6b890..9301e7ecd092 100644 --- a/fs/ufs/Kconfig +++ b/fs/ufs/Kconfig @@ -2,6 +2,7 @@ config UFS_FS tristate "UFS file system support (read only)" depends on BLOCK + select BUFFER_HEAD help BSD and derivate versions of Unix (such as SunOS, FreeBSD, NetBSD, OpenBSD and NeXTstep) use a file system called UFS. Some System V diff --git a/fs/ufs/dir.c b/fs/ufs/dir.c index 379d75796a5c..fd57f03b6c93 100644 --- a/fs/ufs/dir.c +++ b/fs/ufs/dir.c @@ -107,7 +107,7 @@ void ufs_set_link(struct inode *dir, struct ufs_dir_entry *de, ufs_commit_chunk(page, pos, len); ufs_put_page(page); if (update_times) - dir->i_mtime = dir->i_ctime = current_time(dir); + dir->i_mtime = inode_set_ctime_current(dir); mark_inode_dirty(dir); ufs_handle_dirsync(dir); } @@ -397,7 +397,7 @@ got_it: ufs_set_de_type(sb, de, inode->i_mode); ufs_commit_chunk(page, pos, rec_len); - dir->i_mtime = dir->i_ctime = current_time(dir); + dir->i_mtime = inode_set_ctime_current(dir); mark_inode_dirty(dir); err = ufs_handle_dirsync(dir); @@ -539,7 +539,7 @@ int ufs_delete_entry(struct inode *inode, struct ufs_dir_entry *dir, pde->d_reclen = cpu_to_fs16(sb, to - from); dir->d_ino = 0; ufs_commit_chunk(page, pos, to - from); - inode->i_ctime = inode->i_mtime = current_time(inode); + inode->i_mtime = inode_set_ctime_current(inode); mark_inode_dirty(inode); err = ufs_handle_dirsync(inode); out: diff --git a/fs/ufs/ialloc.c b/fs/ufs/ialloc.c index 06bd84d555bd..a1e7bd9d1f98 100644 --- a/fs/ufs/ialloc.c +++ b/fs/ufs/ialloc.c @@ -292,7 +292,7 @@ cg_found: inode_init_owner(&nop_mnt_idmap, inode, dir, mode); inode->i_blocks = 0; inode->i_generation = 0; - inode->i_mtime = inode->i_atime = inode->i_ctime = current_time(inode); + inode->i_mtime = inode->i_atime = inode_set_ctime_current(inode); ufsi->i_flags = UFS_I(dir)->i_flags; ufsi->i_lastfrag = 0; ufsi->i_shadow = 0; diff --git a/fs/ufs/inode.c b/fs/ufs/inode.c index a4246c83a8cd..21a4779a2de5 100644 --- a/fs/ufs/inode.c +++ b/fs/ufs/inode.c @@ -296,7 +296,7 @@ ufs_inode_getfrag(struct inode *inode, unsigned index, if (new) *new = 1; - inode->i_ctime = current_time(inode); + inode_set_ctime_current(inode); if (IS_SYNC(inode)) ufs_sync_inode (inode); mark_inode_dirty(inode); @@ -378,7 +378,7 @@ ufs_inode_getblock(struct inode *inode, u64 ind_block, mark_buffer_dirty(bh); if (IS_SYNC(inode)) sync_dirty_buffer(bh); - inode->i_ctime = current_time(inode); + inode_set_ctime_current(inode); mark_inode_dirty(inode); out: brelse (bh); @@ -580,11 +580,12 @@ static int ufs1_read_inode(struct inode *inode, struct ufs_inode *ufs_inode) inode->i_size = fs64_to_cpu(sb, ufs_inode->ui_size); inode->i_atime.tv_sec = (signed)fs32_to_cpu(sb, ufs_inode->ui_atime.tv_sec); - inode->i_ctime.tv_sec = (signed)fs32_to_cpu(sb, ufs_inode->ui_ctime.tv_sec); + inode_set_ctime(inode, + (signed)fs32_to_cpu(sb, ufs_inode->ui_ctime.tv_sec), + 0); inode->i_mtime.tv_sec = (signed)fs32_to_cpu(sb, ufs_inode->ui_mtime.tv_sec); inode->i_mtime.tv_nsec = 0; inode->i_atime.tv_nsec = 0; - inode->i_ctime.tv_nsec = 0; inode->i_blocks = fs32_to_cpu(sb, ufs_inode->ui_blocks); inode->i_generation = fs32_to_cpu(sb, ufs_inode->ui_gen); ufsi->i_flags = fs32_to_cpu(sb, ufs_inode->ui_flags); @@ -626,10 +627,10 @@ static int ufs2_read_inode(struct inode *inode, struct ufs2_inode *ufs2_inode) inode->i_size = fs64_to_cpu(sb, ufs2_inode->ui_size); inode->i_atime.tv_sec = fs64_to_cpu(sb, ufs2_inode->ui_atime); - inode->i_ctime.tv_sec = fs64_to_cpu(sb, ufs2_inode->ui_ctime); + inode_set_ctime(inode, fs64_to_cpu(sb, ufs2_inode->ui_ctime), + fs32_to_cpu(sb, ufs2_inode->ui_ctimensec)); inode->i_mtime.tv_sec = fs64_to_cpu(sb, ufs2_inode->ui_mtime); inode->i_atime.tv_nsec = fs32_to_cpu(sb, ufs2_inode->ui_atimensec); - inode->i_ctime.tv_nsec = fs32_to_cpu(sb, ufs2_inode->ui_ctimensec); inode->i_mtime.tv_nsec = fs32_to_cpu(sb, ufs2_inode->ui_mtimensec); inode->i_blocks = fs64_to_cpu(sb, ufs2_inode->ui_blocks); inode->i_generation = fs32_to_cpu(sb, ufs2_inode->ui_gen); @@ -726,7 +727,8 @@ static void ufs1_update_inode(struct inode *inode, struct ufs_inode *ufs_inode) ufs_inode->ui_size = cpu_to_fs64(sb, inode->i_size); ufs_inode->ui_atime.tv_sec = cpu_to_fs32(sb, inode->i_atime.tv_sec); ufs_inode->ui_atime.tv_usec = 0; - ufs_inode->ui_ctime.tv_sec = cpu_to_fs32(sb, inode->i_ctime.tv_sec); + ufs_inode->ui_ctime.tv_sec = cpu_to_fs32(sb, + inode_get_ctime(inode).tv_sec); ufs_inode->ui_ctime.tv_usec = 0; ufs_inode->ui_mtime.tv_sec = cpu_to_fs32(sb, inode->i_mtime.tv_sec); ufs_inode->ui_mtime.tv_usec = 0; @@ -770,8 +772,9 @@ static void ufs2_update_inode(struct inode *inode, struct ufs2_inode *ufs_inode) ufs_inode->ui_size = cpu_to_fs64(sb, inode->i_size); ufs_inode->ui_atime = cpu_to_fs64(sb, inode->i_atime.tv_sec); ufs_inode->ui_atimensec = cpu_to_fs32(sb, inode->i_atime.tv_nsec); - ufs_inode->ui_ctime = cpu_to_fs64(sb, inode->i_ctime.tv_sec); - ufs_inode->ui_ctimensec = cpu_to_fs32(sb, inode->i_ctime.tv_nsec); + ufs_inode->ui_ctime = cpu_to_fs64(sb, inode_get_ctime(inode).tv_sec); + ufs_inode->ui_ctimensec = cpu_to_fs32(sb, + inode_get_ctime(inode).tv_nsec); ufs_inode->ui_mtime = cpu_to_fs64(sb, inode->i_mtime.tv_sec); ufs_inode->ui_mtimensec = cpu_to_fs32(sb, inode->i_mtime.tv_nsec); @@ -1205,7 +1208,7 @@ static int ufs_truncate(struct inode *inode, loff_t size) truncate_setsize(inode, size); ufs_truncate_blocks(inode); - inode->i_mtime = inode->i_ctime = current_time(inode); + inode->i_mtime = inode_set_ctime_current(inode); mark_inode_dirty(inode); out: UFSD("EXIT: err %d\n", err); diff --git a/fs/ufs/namei.c b/fs/ufs/namei.c index 36154b5aca6d..9cad29463791 100644 --- a/fs/ufs/namei.c +++ b/fs/ufs/namei.c @@ -153,7 +153,7 @@ static int ufs_link (struct dentry * old_dentry, struct inode * dir, struct inode *inode = d_inode(old_dentry); int error; - inode->i_ctime = current_time(inode); + inode_set_ctime_current(inode); inode_inc_link_count(inode); ihold(inode); @@ -220,7 +220,7 @@ static int ufs_unlink(struct inode *dir, struct dentry *dentry) if (err) goto out; - inode->i_ctime = dir->i_ctime; + inode_set_ctime_to_ts(inode, inode_get_ctime(dir)); inode_dec_link_count(inode); err = 0; out: @@ -282,7 +282,7 @@ static int ufs_rename(struct mnt_idmap *idmap, struct inode *old_dir, if (!new_de) goto out_dir; ufs_set_link(new_dir, new_de, new_page, old_inode, 1); - new_inode->i_ctime = current_time(new_inode); + inode_set_ctime_current(new_inode); if (dir_de) drop_nlink(new_inode); inode_dec_link_count(new_inode); @@ -298,7 +298,7 @@ static int ufs_rename(struct mnt_idmap *idmap, struct inode *old_dir, * Like most other Unix systems, set the ctime for inodes on a * rename. */ - old_inode->i_ctime = current_time(old_inode); + inode_set_ctime_current(old_inode); ufs_delete_entry(old_dir, old_de, old_page); mark_inode_dirty(old_inode); diff --git a/fs/vboxsf/dir.c b/fs/vboxsf/dir.c index 075f15c43c78..5f1a14d5b927 100644 --- a/fs/vboxsf/dir.c +++ b/fs/vboxsf/dir.c @@ -179,9 +179,10 @@ static int vboxsf_dir_iterate(struct file *dir, struct dir_context *ctx) return 0; } +WRAP_DIR_ITER(vboxsf_dir_iterate) // FIXME! const struct file_operations vboxsf_dir_fops = { .open = vboxsf_dir_open, - .iterate = vboxsf_dir_iterate, + .iterate_shared = shared_vboxsf_dir_iterate, .release = vboxsf_dir_release, .read = generic_read_dir, .llseek = generic_file_llseek, diff --git a/fs/vboxsf/shfl_hostintf.h b/fs/vboxsf/shfl_hostintf.h index aca829062c12..069a019c9247 100644 --- a/fs/vboxsf/shfl_hostintf.h +++ b/fs/vboxsf/shfl_hostintf.h @@ -68,9 +68,9 @@ struct shfl_string { /** UTF-8 or UTF-16 string. Nul terminated. */ union { - u8 utf8[2]; - u16 utf16[1]; - u16 ucs2[1]; /* misnomer, use utf16. */ + u8 legacy_padding[2]; + DECLARE_FLEX_ARRAY(u8, utf8); + DECLARE_FLEX_ARRAY(u16, utf16); } string; }; VMMDEV_ASSERT_SIZE(shfl_string, 6); diff --git a/fs/vboxsf/utils.c b/fs/vboxsf/utils.c index dd0ae1188e87..83f20dd15522 100644 --- a/fs/vboxsf/utils.c +++ b/fs/vboxsf/utils.c @@ -128,8 +128,8 @@ int vboxsf_init_inode(struct vboxsf_sbi *sbi, struct inode *inode, inode->i_atime = ns_to_timespec64( info->access_time.ns_relative_to_unix_epoch); - inode->i_ctime = ns_to_timespec64( - info->change_time.ns_relative_to_unix_epoch); + inode_set_ctime_to_ts(inode, + ns_to_timespec64(info->change_time.ns_relative_to_unix_epoch)); inode->i_mtime = ns_to_timespec64( info->modification_time.ns_relative_to_unix_epoch); return 0; @@ -252,7 +252,7 @@ int vboxsf_getattr(struct mnt_idmap *idmap, const struct path *path, if (err) return err; - generic_fillattr(&nop_mnt_idmap, d_inode(dentry), kstat); + generic_fillattr(&nop_mnt_idmap, request_mask, d_inode(dentry), kstat); return 0; } diff --git a/fs/verity/fsverity_private.h b/fs/verity/fsverity_private.h index 49bf3a1eb2a0..d071a6e32581 100644 --- a/fs/verity/fsverity_private.h +++ b/fs/verity/fsverity_private.h @@ -118,16 +118,16 @@ void fsverity_free_info(struct fsverity_info *vi); int fsverity_get_descriptor(struct inode *inode, struct fsverity_descriptor **desc_ret); -int __init fsverity_init_info_cache(void); -void __init fsverity_exit_info_cache(void); +void __init fsverity_init_info_cache(void); /* signature.c */ #ifdef CONFIG_FS_VERITY_BUILTIN_SIGNATURES +extern int fsverity_require_signatures; int fsverity_verify_signature(const struct fsverity_info *vi, const u8 *signature, size_t sig_size); -int __init fsverity_init_signature(void); +void __init fsverity_init_signature(void); #else /* !CONFIG_FS_VERITY_BUILTIN_SIGNATURES */ static inline int fsverity_verify_signature(const struct fsverity_info *vi, @@ -136,15 +136,13 @@ fsverity_verify_signature(const struct fsverity_info *vi, return 0; } -static inline int fsverity_init_signature(void) +static inline void fsverity_init_signature(void) { - return 0; } #endif /* !CONFIG_FS_VERITY_BUILTIN_SIGNATURES */ /* verify.c */ -int __init fsverity_init_workqueue(void); -void __init fsverity_exit_workqueue(void); +void __init fsverity_init_workqueue(void); #endif /* _FSVERITY_PRIVATE_H */ diff --git a/fs/verity/hash_algs.c b/fs/verity/hash_algs.c index c598d2035476..6b08b1d9a7d7 100644 --- a/fs/verity/hash_algs.c +++ b/fs/verity/hash_algs.c @@ -226,6 +226,14 @@ void __init fsverity_check_hash_algs(void) if (!alg->name) continue; + /* + * 0 must never be allocated as an FS_VERITY_HASH_ALG_* value, + * as it is reserved for users that use 0 to mean unspecified or + * a default value. fs/verity/ itself doesn't care and doesn't + * have a default algorithm, but some users make use of this. + */ + BUG_ON(i == 0); + BUG_ON(alg->digest_size > FS_VERITY_MAX_DIGEST_SIZE); /* diff --git a/fs/verity/init.c b/fs/verity/init.c index 023905151035..a29f062f6047 100644 --- a/fs/verity/init.c +++ b/fs/verity/init.c @@ -9,6 +9,37 @@ #include <linux/ratelimit.h> +#ifdef CONFIG_SYSCTL +static struct ctl_table_header *fsverity_sysctl_header; + +static struct ctl_table fsverity_sysctl_table[] = { +#ifdef CONFIG_FS_VERITY_BUILTIN_SIGNATURES + { + .procname = "require_signatures", + .data = &fsverity_require_signatures, + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = proc_dointvec_minmax, + .extra1 = SYSCTL_ZERO, + .extra2 = SYSCTL_ONE, + }, +#endif + { } +}; + +static void __init fsverity_init_sysctl(void) +{ + fsverity_sysctl_header = register_sysctl("fs/verity", + fsverity_sysctl_table); + if (!fsverity_sysctl_header) + panic("fsverity sysctl registration failed"); +} +#else /* CONFIG_SYSCTL */ +static inline void fsverity_init_sysctl(void) +{ +} +#endif /* !CONFIG_SYSCTL */ + void fsverity_msg(const struct inode *inode, const char *level, const char *fmt, ...) { @@ -33,28 +64,11 @@ void fsverity_msg(const struct inode *inode, const char *level, static int __init fsverity_init(void) { - int err; - fsverity_check_hash_algs(); - - err = fsverity_init_info_cache(); - if (err) - return err; - - err = fsverity_init_workqueue(); - if (err) - goto err_exit_info_cache; - - err = fsverity_init_signature(); - if (err) - goto err_exit_workqueue; - + fsverity_init_info_cache(); + fsverity_init_workqueue(); + fsverity_init_sysctl(); + fsverity_init_signature(); return 0; - -err_exit_workqueue: - fsverity_exit_workqueue(); -err_exit_info_cache: - fsverity_exit_info_cache(); - return err; } late_initcall(fsverity_init) diff --git a/fs/verity/open.c b/fs/verity/open.c index 1db5106a9c38..6c31a871b84b 100644 --- a/fs/verity/open.c +++ b/fs/verity/open.c @@ -408,18 +408,10 @@ void __fsverity_cleanup_inode(struct inode *inode) } EXPORT_SYMBOL_GPL(__fsverity_cleanup_inode); -int __init fsverity_init_info_cache(void) +void __init fsverity_init_info_cache(void) { - fsverity_info_cachep = KMEM_CACHE_USERCOPY(fsverity_info, - SLAB_RECLAIM_ACCOUNT, - file_digest); - if (!fsverity_info_cachep) - return -ENOMEM; - return 0; -} - -void __init fsverity_exit_info_cache(void) -{ - kmem_cache_destroy(fsverity_info_cachep); - fsverity_info_cachep = NULL; + fsverity_info_cachep = KMEM_CACHE_USERCOPY( + fsverity_info, + SLAB_RECLAIM_ACCOUNT | SLAB_PANIC, + file_digest); } diff --git a/fs/verity/signature.c b/fs/verity/signature.c index 72034bc71c9d..90c07573dd77 100644 --- a/fs/verity/signature.c +++ b/fs/verity/signature.c @@ -24,7 +24,7 @@ * /proc/sys/fs/verity/require_signatures * If 1, all verity files must have a valid builtin signature. */ -static int fsverity_require_signatures; +int fsverity_require_signatures; /* * Keyring that contains the trusted X.509 certificates. @@ -62,6 +62,22 @@ int fsverity_verify_signature(const struct fsverity_info *vi, return 0; } + if (fsverity_keyring->keys.nr_leaves_on_tree == 0) { + /* + * The ".fs-verity" keyring is empty, due to builtin signatures + * being supported by the kernel but not actually being used. + * In this case, verify_pkcs7_signature() would always return an + * error, usually ENOKEY. It could also be EBADMSG if the + * PKCS#7 is malformed, but that isn't very important to + * distinguish. So, just skip to ENOKEY to avoid the attack + * surface of the PKCS#7 parser, which would otherwise be + * reachable by any task able to execute FS_IOC_ENABLE_VERITY. + */ + fsverity_err(inode, + "fs-verity keyring is empty, rejecting signed file!"); + return -ENOKEY; + } + d = kzalloc(sizeof(*d) + hash_alg->digest_size, GFP_KERNEL); if (!d) return -ENOMEM; @@ -93,59 +109,14 @@ int fsverity_verify_signature(const struct fsverity_info *vi, return 0; } -#ifdef CONFIG_SYSCTL -static struct ctl_table_header *fsverity_sysctl_header; - -static struct ctl_table fsverity_sysctl_table[] = { - { - .procname = "require_signatures", - .data = &fsverity_require_signatures, - .maxlen = sizeof(int), - .mode = 0644, - .proc_handler = proc_dointvec_minmax, - .extra1 = SYSCTL_ZERO, - .extra2 = SYSCTL_ONE, - }, - { } -}; - -static int __init fsverity_sysctl_init(void) -{ - fsverity_sysctl_header = register_sysctl("fs/verity", fsverity_sysctl_table); - if (!fsverity_sysctl_header) { - pr_err("sysctl registration failed!\n"); - return -ENOMEM; - } - return 0; -} -#else /* !CONFIG_SYSCTL */ -static inline int __init fsverity_sysctl_init(void) +void __init fsverity_init_signature(void) { - return 0; -} -#endif /* !CONFIG_SYSCTL */ - -int __init fsverity_init_signature(void) -{ - struct key *ring; - int err; - - ring = keyring_alloc(".fs-verity", KUIDT_INIT(0), KGIDT_INIT(0), - current_cred(), KEY_POS_SEARCH | + fsverity_keyring = + keyring_alloc(".fs-verity", KUIDT_INIT(0), KGIDT_INIT(0), + current_cred(), KEY_POS_SEARCH | KEY_USR_VIEW | KEY_USR_READ | KEY_USR_WRITE | KEY_USR_SEARCH | KEY_USR_SETATTR, - KEY_ALLOC_NOT_IN_QUOTA, NULL, NULL); - if (IS_ERR(ring)) - return PTR_ERR(ring); - - err = fsverity_sysctl_init(); - if (err) - goto err_put_ring; - - fsverity_keyring = ring; - return 0; - -err_put_ring: - key_put(ring); - return err; + KEY_ALLOC_NOT_IN_QUOTA, NULL, NULL); + if (IS_ERR(fsverity_keyring)) + panic("failed to allocate \".fs-verity\" keyring"); } diff --git a/fs/verity/verify.c b/fs/verity/verify.c index 433cef51f5f6..904ccd7e8e16 100644 --- a/fs/verity/verify.c +++ b/fs/verity/verify.c @@ -346,7 +346,7 @@ void fsverity_enqueue_verify_work(struct work_struct *work) } EXPORT_SYMBOL_GPL(fsverity_enqueue_verify_work); -int __init fsverity_init_workqueue(void) +void __init fsverity_init_workqueue(void) { /* * Use a high-priority workqueue to prioritize verification work, which @@ -360,12 +360,5 @@ int __init fsverity_init_workqueue(void) WQ_HIGHPRI, num_online_cpus()); if (!fsverity_read_workqueue) - return -ENOMEM; - return 0; -} - -void __init fsverity_exit_workqueue(void) -{ - destroy_workqueue(fsverity_read_workqueue); - fsverity_read_workqueue = NULL; + panic("failed to allocate fsverity_read_queue"); } diff --git a/fs/xattr.c b/fs/xattr.c index e7bbb7f57557..efd4736bc94b 100644 --- a/fs/xattr.c +++ b/fs/xattr.c @@ -1040,12 +1040,32 @@ const char *xattr_full_name(const struct xattr_handler *handler, EXPORT_SYMBOL(xattr_full_name); /** - * free_simple_xattr - free an xattr object + * simple_xattr_space - estimate the memory used by a simple xattr + * @name: the full name of the xattr + * @size: the size of its value + * + * This takes no account of how much larger the two slab objects actually are: + * that would depend on the slab implementation, when what is required is a + * deterministic number, which grows with name length and size and quantity. + * + * Return: The approximate number of bytes of memory used by such an xattr. + */ +size_t simple_xattr_space(const char *name, size_t size) +{ + /* + * Use "40" instead of sizeof(struct simple_xattr), to return the + * same result on 32-bit and 64-bit, and even if simple_xattr grows. + */ + return 40 + size + strlen(name); +} + +/** + * simple_xattr_free - free an xattr object * @xattr: the xattr object * * Free the xattr object. Can handle @xattr being NULL. */ -static inline void free_simple_xattr(struct simple_xattr *xattr) +void simple_xattr_free(struct simple_xattr *xattr) { if (xattr) kfree(xattr->name); @@ -1073,7 +1093,7 @@ struct simple_xattr *simple_xattr_alloc(const void *value, size_t size) if (len < sizeof(*new_xattr)) return NULL; - new_xattr = kvmalloc(len, GFP_KERNEL); + new_xattr = kvmalloc(len, GFP_KERNEL_ACCOUNT); if (!new_xattr) return NULL; @@ -1164,7 +1184,6 @@ int simple_xattr_get(struct simple_xattrs *xattrs, const char *name, * @value: the value to store along the xattr * @size: the size of @value * @flags: the flags determining how to set the xattr - * @removed_size: the size of the removed xattr * * Set a new xattr object. * If @value is passed a new xattr object will be allocated. If XATTR_REPLACE @@ -1181,29 +1200,27 @@ int simple_xattr_get(struct simple_xattrs *xattrs, const char *name, * nothing if XATTR_CREATE is specified in @flags or @flags is zero. For * XATTR_REPLACE we fail as mentioned above. * - * Return: On success zero and on error a negative error code is returned. + * Return: On success, the removed or replaced xattr is returned, to be freed + * by the caller; or NULL if none. On failure a negative error code is returned. */ -int simple_xattr_set(struct simple_xattrs *xattrs, const char *name, - const void *value, size_t size, int flags, - ssize_t *removed_size) +struct simple_xattr *simple_xattr_set(struct simple_xattrs *xattrs, + const char *name, const void *value, + size_t size, int flags) { - struct simple_xattr *xattr = NULL, *new_xattr = NULL; + struct simple_xattr *old_xattr = NULL, *new_xattr = NULL; struct rb_node *parent = NULL, **rbp; int err = 0, ret; - if (removed_size) - *removed_size = -1; - /* value == NULL means remove */ if (value) { new_xattr = simple_xattr_alloc(value, size); if (!new_xattr) - return -ENOMEM; + return ERR_PTR(-ENOMEM); - new_xattr->name = kstrdup(name, GFP_KERNEL); + new_xattr->name = kstrdup(name, GFP_KERNEL_ACCOUNT); if (!new_xattr->name) { - free_simple_xattr(new_xattr); - return -ENOMEM; + simple_xattr_free(new_xattr); + return ERR_PTR(-ENOMEM); } } @@ -1217,12 +1234,12 @@ int simple_xattr_set(struct simple_xattrs *xattrs, const char *name, else if (ret > 0) rbp = &(*rbp)->rb_right; else - xattr = rb_entry(*rbp, struct simple_xattr, rb_node); - if (xattr) + old_xattr = rb_entry(*rbp, struct simple_xattr, rb_node); + if (old_xattr) break; } - if (xattr) { + if (old_xattr) { /* Fail if XATTR_CREATE is requested and the xattr exists. */ if (flags & XATTR_CREATE) { err = -EEXIST; @@ -1230,12 +1247,10 @@ int simple_xattr_set(struct simple_xattrs *xattrs, const char *name, } if (new_xattr) - rb_replace_node(&xattr->rb_node, &new_xattr->rb_node, - &xattrs->rb_root); + rb_replace_node(&old_xattr->rb_node, + &new_xattr->rb_node, &xattrs->rb_root); else - rb_erase(&xattr->rb_node, &xattrs->rb_root); - if (!err && removed_size) - *removed_size = xattr->size; + rb_erase(&old_xattr->rb_node, &xattrs->rb_root); } else { /* Fail if XATTR_REPLACE is requested but no xattr is found. */ if (flags & XATTR_REPLACE) { @@ -1260,12 +1275,10 @@ int simple_xattr_set(struct simple_xattrs *xattrs, const char *name, out_unlock: write_unlock(&xattrs->lock); - if (err) - free_simple_xattr(new_xattr); - else - free_simple_xattr(xattr); - return err; - + if (!err) + return old_xattr; + simple_xattr_free(new_xattr); + return ERR_PTR(err); } static bool xattr_is_trusted(const char *name) @@ -1370,14 +1383,17 @@ void simple_xattrs_init(struct simple_xattrs *xattrs) /** * simple_xattrs_free - free xattrs * @xattrs: xattr header whose xattrs to destroy + * @freed_space: approximate number of bytes of memory freed from @xattrs * * Destroy all xattrs in @xattr. When this is called no one can hold a * reference to any of the xattrs anymore. */ -void simple_xattrs_free(struct simple_xattrs *xattrs) +void simple_xattrs_free(struct simple_xattrs *xattrs, size_t *freed_space) { struct rb_node *rbp; + if (freed_space) + *freed_space = 0; rbp = rb_first(&xattrs->rb_root); while (rbp) { struct simple_xattr *xattr; @@ -1386,7 +1402,10 @@ void simple_xattrs_free(struct simple_xattrs *xattrs) rbp_next = rb_next(rbp); xattr = rb_entry(rbp, struct simple_xattr, rb_node); rb_erase(&xattr->rb_node, &xattrs->rb_root); - free_simple_xattr(xattr); + if (freed_space) + *freed_space += simple_xattr_space(xattr->name, + xattr->size); + simple_xattr_free(xattr); rbp = rbp_next; } } diff --git a/fs/xfs/Kconfig b/fs/xfs/Kconfig index 52e1823241fb..c9d653168ad0 100644 --- a/fs/xfs/Kconfig +++ b/fs/xfs/Kconfig @@ -128,6 +128,7 @@ config XFS_ONLINE_SCRUB bool "XFS online metadata check support" default n depends on XFS_FS + depends on TMPFS && SHMEM select XFS_DRAIN_INTENTS help If you say Y here you will be able to check metadata on a @@ -142,6 +143,23 @@ config XFS_ONLINE_SCRUB If unsure, say N. +config XFS_ONLINE_SCRUB_STATS + bool "XFS online metadata check usage data collection" + default y + depends on XFS_ONLINE_SCRUB + select FS_DEBUG + help + If you say Y here, the kernel will gather usage data about + the online metadata check subsystem. This includes the number + of invocations, the outcomes, and the results of repairs, if any. + This may slow down scrub slightly due to the use of high precision + timers and the need to merge per-invocation information into the + filesystem counters. + + Usage data are collected in /sys/kernel/debug/xfs/scrub. + + If unsure, say N. + config XFS_ONLINE_REPAIR bool "XFS online metadata repair support" default n diff --git a/fs/xfs/Makefile b/fs/xfs/Makefile index 16e4eb431230..7762c01a85cf 100644 --- a/fs/xfs/Makefile +++ b/fs/xfs/Makefile @@ -164,15 +164,24 @@ xfs-y += $(addprefix scrub/, \ rmap.o \ scrub.o \ symlink.o \ + xfarray.o \ + xfile.o \ + ) + +xfs-$(CONFIG_XFS_ONLINE_SCRUB_STATS) += scrub/stats.o + +xfs-$(CONFIG_XFS_RT) += $(addprefix scrub/, \ + rtbitmap.o \ + rtsummary.o \ ) -xfs-$(CONFIG_XFS_RT) += scrub/rtbitmap.o xfs-$(CONFIG_XFS_QUOTA) += scrub/quota.o # online repair ifeq ($(CONFIG_XFS_ONLINE_REPAIR),y) xfs-y += $(addprefix scrub/, \ agheader_repair.o \ + reap.o \ repair.o \ ) endif diff --git a/fs/xfs/libxfs/xfs_fs.h b/fs/xfs/libxfs/xfs_fs.h index 2cbf9ea39b8c..6360073865db 100644 --- a/fs/xfs/libxfs/xfs_fs.h +++ b/fs/xfs/libxfs/xfs_fs.h @@ -743,7 +743,11 @@ struct xfs_scrub_metadata { */ #define XFS_SCRUB_OFLAG_NO_REPAIR_NEEDED (1u << 7) -#define XFS_SCRUB_FLAGS_IN (XFS_SCRUB_IFLAG_REPAIR) +/* i: Rebuild the data structure. */ +#define XFS_SCRUB_IFLAG_FORCE_REBUILD (1u << 8) + +#define XFS_SCRUB_FLAGS_IN (XFS_SCRUB_IFLAG_REPAIR | \ + XFS_SCRUB_IFLAG_FORCE_REBUILD) #define XFS_SCRUB_FLAGS_OUT (XFS_SCRUB_OFLAG_CORRUPT | \ XFS_SCRUB_OFLAG_PREEN | \ XFS_SCRUB_OFLAG_XFAIL | \ diff --git a/fs/xfs/libxfs/xfs_inode_buf.c b/fs/xfs/libxfs/xfs_inode_buf.c index 758aacd8166b..a35781577cad 100644 --- a/fs/xfs/libxfs/xfs_inode_buf.c +++ b/fs/xfs/libxfs/xfs_inode_buf.c @@ -222,7 +222,8 @@ xfs_inode_from_disk( */ inode->i_atime = xfs_inode_from_disk_ts(from, from->di_atime); inode->i_mtime = xfs_inode_from_disk_ts(from, from->di_mtime); - inode->i_ctime = xfs_inode_from_disk_ts(from, from->di_ctime); + inode_set_ctime_to_ts(inode, + xfs_inode_from_disk_ts(from, from->di_ctime)); ip->i_disk_size = be64_to_cpu(from->di_size); ip->i_nblocks = be64_to_cpu(from->di_nblocks); @@ -316,7 +317,7 @@ xfs_inode_to_disk( to->di_atime = xfs_inode_to_disk_ts(ip, inode->i_atime); to->di_mtime = xfs_inode_to_disk_ts(ip, inode->i_mtime); - to->di_ctime = xfs_inode_to_disk_ts(ip, inode->i_ctime); + to->di_ctime = xfs_inode_to_disk_ts(ip, inode_get_ctime(inode)); to->di_nlink = cpu_to_be32(inode->i_nlink); to->di_gen = cpu_to_be32(inode->i_generation); to->di_mode = cpu_to_be16(inode->i_mode); diff --git a/fs/xfs/libxfs/xfs_trans_inode.c b/fs/xfs/libxfs/xfs_trans_inode.c index cb4796b6e693..ad22656376d3 100644 --- a/fs/xfs/libxfs/xfs_trans_inode.c +++ b/fs/xfs/libxfs/xfs_trans_inode.c @@ -62,12 +62,12 @@ xfs_trans_ichgtime( ASSERT(tp); ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); - tv = current_time(inode); + /* If the mtime changes, then ctime must also change */ + ASSERT(flags & XFS_ICHGTIME_CHG); + tv = inode_set_ctime_current(inode); if (flags & XFS_ICHGTIME_MOD) inode->i_mtime = tv; - if (flags & XFS_ICHGTIME_CHG) - inode->i_ctime = tv; if (flags & XFS_ICHGTIME_CREATE) ip->i_crtime = tv; } diff --git a/fs/xfs/scrub/agheader_repair.c b/fs/xfs/scrub/agheader_repair.c index bbaa65422c4f..876a2f41b063 100644 --- a/fs/xfs/scrub/agheader_repair.c +++ b/fs/xfs/scrub/agheader_repair.c @@ -26,6 +26,7 @@ #include "scrub/trace.h" #include "scrub/repair.h" #include "scrub/bitmap.h" +#include "scrub/reap.h" /* Superblock */ @@ -48,6 +49,10 @@ xrep_superblock( if (error) return error; + /* Last chance to abort before we start committing fixes. */ + if (xchk_should_terminate(sc, &error)) + return error; + /* Copy AG 0's superblock to this one. */ xfs_buf_zero(bp, 0, BBTOB(bp->b_length)); xfs_sb_to_disk(bp->b_addr, &mp->m_sb); @@ -423,6 +428,10 @@ xrep_agf( if (error) return error; + /* Last chance to abort before we start committing fixes. */ + if (xchk_should_terminate(sc, &error)) + return error; + /* Start rewriting the header and implant the btrees we found. */ xrep_agf_init_header(sc, agf_bp, &old_agf); xrep_agf_set_roots(sc, agf, fab); @@ -444,13 +453,13 @@ out_revert: struct xrep_agfl { /* Bitmap of alleged AGFL blocks that we're not going to add. */ - struct xbitmap crossed; + struct xagb_bitmap crossed; /* Bitmap of other OWN_AG metadata blocks. */ - struct xbitmap agmetablocks; + struct xagb_bitmap agmetablocks; /* Bitmap of free space. */ - struct xbitmap *freesp; + struct xagb_bitmap *freesp; /* rmapbt cursor for finding crosslinked blocks */ struct xfs_btree_cur *rmap_cur; @@ -466,7 +475,6 @@ xrep_agfl_walk_rmap( void *priv) { struct xrep_agfl *ra = priv; - xfs_fsblock_t fsb; int error = 0; if (xchk_should_terminate(ra->sc, &error)) @@ -474,14 +482,13 @@ xrep_agfl_walk_rmap( /* Record all the OWN_AG blocks. */ if (rec->rm_owner == XFS_RMAP_OWN_AG) { - fsb = XFS_AGB_TO_FSB(cur->bc_mp, cur->bc_ag.pag->pag_agno, - rec->rm_startblock); - error = xbitmap_set(ra->freesp, fsb, rec->rm_blockcount); + error = xagb_bitmap_set(ra->freesp, rec->rm_startblock, + rec->rm_blockcount); if (error) return error; } - return xbitmap_set_btcur_path(&ra->agmetablocks, cur); + return xagb_bitmap_set_btcur_path(&ra->agmetablocks, cur); } /* Strike out the blocks that are cross-linked according to the rmapbt. */ @@ -492,12 +499,10 @@ xrep_agfl_check_extent( void *priv) { struct xrep_agfl *ra = priv; - xfs_agblock_t agbno = XFS_FSB_TO_AGBNO(ra->sc->mp, start); + xfs_agblock_t agbno = start; xfs_agblock_t last_agbno = agbno + len - 1; int error; - ASSERT(XFS_FSB_TO_AGNO(ra->sc->mp, start) == ra->sc->sa.pag->pag_agno); - while (agbno <= last_agbno) { bool other_owners; @@ -507,7 +512,7 @@ xrep_agfl_check_extent( return error; if (other_owners) { - error = xbitmap_set(&ra->crossed, agbno, 1); + error = xagb_bitmap_set(&ra->crossed, agbno, 1); if (error) return error; } @@ -533,7 +538,7 @@ STATIC int xrep_agfl_collect_blocks( struct xfs_scrub *sc, struct xfs_buf *agf_bp, - struct xbitmap *agfl_extents, + struct xagb_bitmap *agfl_extents, xfs_agblock_t *flcount) { struct xrep_agfl ra; @@ -543,8 +548,8 @@ xrep_agfl_collect_blocks( ra.sc = sc; ra.freesp = agfl_extents; - xbitmap_init(&ra.agmetablocks); - xbitmap_init(&ra.crossed); + xagb_bitmap_init(&ra.agmetablocks); + xagb_bitmap_init(&ra.crossed); /* Find all space used by the free space btrees & rmapbt. */ cur = xfs_rmapbt_init_cursor(mp, sc->tp, agf_bp, sc->sa.pag); @@ -556,7 +561,7 @@ xrep_agfl_collect_blocks( /* Find all blocks currently being used by the bnobt. */ cur = xfs_allocbt_init_cursor(mp, sc->tp, agf_bp, sc->sa.pag, XFS_BTNUM_BNO); - error = xbitmap_set_btblocks(&ra.agmetablocks, cur); + error = xagb_bitmap_set_btblocks(&ra.agmetablocks, cur); xfs_btree_del_cursor(cur, error); if (error) goto out_bmp; @@ -564,7 +569,7 @@ xrep_agfl_collect_blocks( /* Find all blocks currently being used by the cntbt. */ cur = xfs_allocbt_init_cursor(mp, sc->tp, agf_bp, sc->sa.pag, XFS_BTNUM_CNT); - error = xbitmap_set_btblocks(&ra.agmetablocks, cur); + error = xagb_bitmap_set_btblocks(&ra.agmetablocks, cur); xfs_btree_del_cursor(cur, error); if (error) goto out_bmp; @@ -573,17 +578,17 @@ xrep_agfl_collect_blocks( * Drop the freesp meta blocks that are in use by btrees. * The remaining blocks /should/ be AGFL blocks. */ - error = xbitmap_disunion(agfl_extents, &ra.agmetablocks); + error = xagb_bitmap_disunion(agfl_extents, &ra.agmetablocks); if (error) goto out_bmp; /* Strike out the blocks that are cross-linked. */ ra.rmap_cur = xfs_rmapbt_init_cursor(mp, sc->tp, agf_bp, sc->sa.pag); - error = xbitmap_walk(agfl_extents, xrep_agfl_check_extent, &ra); + error = xagb_bitmap_walk(agfl_extents, xrep_agfl_check_extent, &ra); xfs_btree_del_cursor(ra.rmap_cur, error); if (error) goto out_bmp; - error = xbitmap_disunion(agfl_extents, &ra.crossed); + error = xagb_bitmap_disunion(agfl_extents, &ra.crossed); if (error) goto out_bmp; @@ -591,12 +596,12 @@ xrep_agfl_collect_blocks( * Calculate the new AGFL size. If we found more blocks than fit in * the AGFL we'll free them later. */ - *flcount = min_t(uint64_t, xbitmap_hweight(agfl_extents), + *flcount = min_t(uint64_t, xagb_bitmap_hweight(agfl_extents), xfs_agfl_size(mp)); out_bmp: - xbitmap_destroy(&ra.crossed); - xbitmap_destroy(&ra.agmetablocks); + xagb_bitmap_destroy(&ra.crossed); + xagb_bitmap_destroy(&ra.agmetablocks); return error; } @@ -615,18 +620,24 @@ xrep_agfl_update_agf( xfs_force_summary_recalc(sc->mp); /* Update the AGF counters. */ - if (xfs_perag_initialised_agf(sc->sa.pag)) + if (xfs_perag_initialised_agf(sc->sa.pag)) { sc->sa.pag->pagf_flcount = flcount; + clear_bit(XFS_AGSTATE_AGFL_NEEDS_RESET, + &sc->sa.pag->pag_opstate); + } agf->agf_flfirst = cpu_to_be32(0); agf->agf_flcount = cpu_to_be32(flcount); - agf->agf_fllast = cpu_to_be32(flcount - 1); + if (flcount) + agf->agf_fllast = cpu_to_be32(flcount - 1); + else + agf->agf_fllast = cpu_to_be32(xfs_agfl_size(sc->mp) - 1); xfs_alloc_log_agf(sc->tp, agf_bp, XFS_AGF_FLFIRST | XFS_AGF_FLLAST | XFS_AGF_FLCOUNT); } struct xrep_agfl_fill { - struct xbitmap used_extents; + struct xagb_bitmap used_extents; struct xfs_scrub *sc; __be32 *agfl_bno; xfs_agblock_t flcount; @@ -642,17 +653,15 @@ xrep_agfl_fill( { struct xrep_agfl_fill *af = priv; struct xfs_scrub *sc = af->sc; - xfs_fsblock_t fsbno = start; + xfs_agblock_t agbno = start; int error; - while (fsbno < start + len && af->fl_off < af->flcount) - af->agfl_bno[af->fl_off++] = - cpu_to_be32(XFS_FSB_TO_AGBNO(sc->mp, fsbno++)); + trace_xrep_agfl_insert(sc->sa.pag, agbno, len); - trace_xrep_agfl_insert(sc->mp, sc->sa.pag->pag_agno, - XFS_FSB_TO_AGBNO(sc->mp, start), len); + while (agbno < start + len && af->fl_off < af->flcount) + af->agfl_bno[af->fl_off++] = cpu_to_be32(agbno++); - error = xbitmap_set(&af->used_extents, start, fsbno - 1); + error = xagb_bitmap_set(&af->used_extents, start, agbno - 1); if (error) return error; @@ -667,7 +676,7 @@ STATIC int xrep_agfl_init_header( struct xfs_scrub *sc, struct xfs_buf *agfl_bp, - struct xbitmap *agfl_extents, + struct xagb_bitmap *agfl_extents, xfs_agblock_t flcount) { struct xrep_agfl_fill af = { @@ -695,17 +704,17 @@ xrep_agfl_init_header( * blocks than fit in the AGFL, they will be freed in a subsequent * step. */ - xbitmap_init(&af.used_extents); + xagb_bitmap_init(&af.used_extents); af.agfl_bno = xfs_buf_to_agfl_bno(agfl_bp), - xbitmap_walk(agfl_extents, xrep_agfl_fill, &af); - error = xbitmap_disunion(agfl_extents, &af.used_extents); + xagb_bitmap_walk(agfl_extents, xrep_agfl_fill, &af); + error = xagb_bitmap_disunion(agfl_extents, &af.used_extents); if (error) return error; /* Write new AGFL to disk. */ xfs_trans_buf_set_type(sc->tp, agfl_bp, XFS_BLFT_AGFL_BUF); xfs_trans_log_buf(sc->tp, agfl_bp, 0, BBTOB(agfl_bp->b_length) - 1); - xbitmap_destroy(&af.used_extents); + xagb_bitmap_destroy(&af.used_extents); return 0; } @@ -714,7 +723,7 @@ int xrep_agfl( struct xfs_scrub *sc) { - struct xbitmap agfl_extents; + struct xagb_bitmap agfl_extents; struct xfs_mount *mp = sc->mp; struct xfs_buf *agf_bp; struct xfs_buf *agfl_bp; @@ -725,7 +734,7 @@ xrep_agfl( if (!xfs_has_rmapbt(mp)) return -EOPNOTSUPP; - xbitmap_init(&agfl_extents); + xagb_bitmap_init(&agfl_extents); /* * Read the AGF so that we can query the rmapbt. We hope that there's @@ -753,6 +762,10 @@ xrep_agfl( if (error) goto err; + /* Last chance to abort before we start committing fixes. */ + if (xchk_should_terminate(sc, &error)) + goto err; + /* * Update AGF and AGFL. We reset the global free block counter when * we adjust the AGF flcount (which can fail) so avoid updating any @@ -774,10 +787,10 @@ xrep_agfl( goto err; /* Dump any AGFL overflow. */ - error = xrep_reap_extents(sc, &agfl_extents, &XFS_RMAP_OINFO_AG, + error = xrep_reap_agblocks(sc, &agfl_extents, &XFS_RMAP_OINFO_AG, XFS_AG_RESV_AGFL); err: - xbitmap_destroy(&agfl_extents); + xagb_bitmap_destroy(&agfl_extents); return error; } @@ -1000,6 +1013,10 @@ xrep_agi( if (error) return error; + /* Last chance to abort before we start committing fixes. */ + if (xchk_should_terminate(sc, &error)) + return error; + /* Start rewriting the header and implant the btrees we found. */ xrep_agi_init_header(sc, agi_bp, &old_agi); xrep_agi_set_roots(sc, agi, fab); diff --git a/fs/xfs/scrub/bitmap.c b/fs/xfs/scrub/bitmap.c index 0c959be396ea..e0c89a9a0ca0 100644 --- a/fs/xfs/scrub/bitmap.c +++ b/fs/xfs/scrub/bitmap.c @@ -301,21 +301,15 @@ xagb_bitmap_set_btblocks( * blocks going from the leaf towards the root. */ int -xbitmap_set_btcur_path( - struct xbitmap *bitmap, +xagb_bitmap_set_btcur_path( + struct xagb_bitmap *bitmap, struct xfs_btree_cur *cur) { - struct xfs_buf *bp; - xfs_fsblock_t fsb; int i; int error; for (i = 0; i < cur->bc_nlevels && cur->bc_levels[i].ptr == 1; i++) { - xfs_btree_get_block(cur, i, &bp); - if (!bp) - continue; - fsb = XFS_DADDR_TO_FSB(cur->bc_mp, xfs_buf_daddr(bp)); - error = xbitmap_set(bitmap, fsb, 1); + error = xagb_bitmap_visit_btblock(cur, i, bitmap); if (error) return error; } @@ -323,35 +317,6 @@ xbitmap_set_btcur_path( return 0; } -/* Collect a btree's block in the bitmap. */ -STATIC int -xbitmap_collect_btblock( - struct xfs_btree_cur *cur, - int level, - void *priv) -{ - struct xbitmap *bitmap = priv; - struct xfs_buf *bp; - xfs_fsblock_t fsbno; - - xfs_btree_get_block(cur, level, &bp); - if (!bp) - return 0; - - fsbno = XFS_DADDR_TO_FSB(cur->bc_mp, xfs_buf_daddr(bp)); - return xbitmap_set(bitmap, fsbno, 1); -} - -/* Walk the btree and mark the bitmap wherever a btree block is found. */ -int -xbitmap_set_btblocks( - struct xbitmap *bitmap, - struct xfs_btree_cur *cur) -{ - return xfs_btree_visit_blocks(cur, xbitmap_collect_btblock, - XFS_BTREE_VISIT_ALL, bitmap); -} - /* How many bits are set in this bitmap? */ uint64_t xbitmap_hweight( @@ -385,43 +350,6 @@ xbitmap_walk( return error; } -struct xbitmap_walk_bits { - xbitmap_walk_bits_fn fn; - void *priv; -}; - -/* Walk all the bits in a run. */ -static int -xbitmap_walk_bits_in_run( - uint64_t start, - uint64_t len, - void *priv) -{ - struct xbitmap_walk_bits *wb = priv; - uint64_t i; - int error = 0; - - for (i = start; i < start + len; i++) { - error = wb->fn(i, wb->priv); - if (error) - break; - } - - return error; -} - -/* Call a function for every set bit in this bitmap. */ -int -xbitmap_walk_bits( - struct xbitmap *bitmap, - xbitmap_walk_bits_fn fn, - void *priv) -{ - struct xbitmap_walk_bits wb = {.fn = fn, .priv = priv}; - - return xbitmap_walk(bitmap, xbitmap_walk_bits_in_run, &wb); -} - /* Does this bitmap have no bits set at all? */ bool xbitmap_empty( diff --git a/fs/xfs/scrub/bitmap.h b/fs/xfs/scrub/bitmap.h index 84981724ecaf..4fe58bad6734 100644 --- a/fs/xfs/scrub/bitmap.h +++ b/fs/xfs/scrub/bitmap.h @@ -16,10 +16,6 @@ void xbitmap_destroy(struct xbitmap *bitmap); int xbitmap_clear(struct xbitmap *bitmap, uint64_t start, uint64_t len); int xbitmap_set(struct xbitmap *bitmap, uint64_t start, uint64_t len); int xbitmap_disunion(struct xbitmap *bitmap, struct xbitmap *sub); -int xbitmap_set_btcur_path(struct xbitmap *bitmap, - struct xfs_btree_cur *cur); -int xbitmap_set_btblocks(struct xbitmap *bitmap, - struct xfs_btree_cur *cur); uint64_t xbitmap_hweight(struct xbitmap *bitmap); /* @@ -33,10 +29,6 @@ typedef int (*xbitmap_walk_fn)(uint64_t start, uint64_t len, void *priv); int xbitmap_walk(struct xbitmap *bitmap, xbitmap_walk_fn fn, void *priv); -typedef int (*xbitmap_walk_bits_fn)(uint64_t bit, void *priv); -int xbitmap_walk_bits(struct xbitmap *bitmap, xbitmap_walk_bits_fn fn, - void *priv); - bool xbitmap_empty(struct xbitmap *bitmap); bool xbitmap_test(struct xbitmap *bitmap, uint64_t start, uint64_t *len); @@ -110,5 +102,7 @@ static inline int xagb_bitmap_walk(struct xagb_bitmap *bitmap, int xagb_bitmap_set_btblocks(struct xagb_bitmap *bitmap, struct xfs_btree_cur *cur); +int xagb_bitmap_set_btcur_path(struct xagb_bitmap *bitmap, + struct xfs_btree_cur *cur); #endif /* __XFS_SCRUB_BITMAP_H__ */ diff --git a/fs/xfs/scrub/bmap.c b/fs/xfs/scrub/bmap.c index 5bf4326e9783..75588915572e 100644 --- a/fs/xfs/scrub/bmap.c +++ b/fs/xfs/scrub/bmap.c @@ -38,8 +38,7 @@ xchk_setup_inode_bmap( if (error) goto out; - sc->ilock_flags = XFS_IOLOCK_EXCL; - xfs_ilock(sc->ip, XFS_IOLOCK_EXCL); + xchk_ilock(sc, XFS_IOLOCK_EXCL); /* * We don't want any ephemeral data/cow fork updates sitting around @@ -50,8 +49,7 @@ xchk_setup_inode_bmap( sc->sm->sm_type != XFS_SCRUB_TYPE_BMBTA) { struct address_space *mapping = VFS_I(sc->ip)->i_mapping; - sc->ilock_flags |= XFS_MMAPLOCK_EXCL; - xfs_ilock(sc->ip, XFS_MMAPLOCK_EXCL); + xchk_ilock(sc, XFS_MMAPLOCK_EXCL); inode_dio_wait(VFS_I(sc->ip)); @@ -79,9 +77,8 @@ xchk_setup_inode_bmap( error = xchk_trans_alloc(sc, 0); if (error) goto out; - sc->ilock_flags |= XFS_ILOCK_EXCL; - xfs_ilock(sc->ip, XFS_ILOCK_EXCL); + xchk_ilock(sc, XFS_ILOCK_EXCL); out: /* scrub teardown will unlock and release the inode */ return error; @@ -844,7 +841,7 @@ xchk_bmap( /* Non-existent forks can be ignored. */ if (!ifp) - goto out; + return -ENOENT; info.is_rt = whichfork == XFS_DATA_FORK && XFS_IS_REALTIME_INODE(ip); info.whichfork = whichfork; @@ -853,10 +850,10 @@ xchk_bmap( switch (whichfork) { case XFS_COW_FORK: - /* No CoW forks on non-reflink inodes/filesystems. */ - if (!xfs_is_reflink_inode(ip)) { + /* No CoW forks on non-reflink filesystems. */ + if (!xfs_has_reflink(mp)) { xchk_ino_set_corrupt(sc, sc->ip->i_ino); - goto out; + return 0; } break; case XFS_ATTR_FORK: @@ -876,31 +873,31 @@ xchk_bmap( /* No mappings to check. */ if (whichfork == XFS_COW_FORK) xchk_fblock_set_corrupt(sc, whichfork, 0); - goto out; + return 0; case XFS_DINODE_FMT_EXTENTS: break; case XFS_DINODE_FMT_BTREE: if (whichfork == XFS_COW_FORK) { xchk_fblock_set_corrupt(sc, whichfork, 0); - goto out; + return 0; } error = xchk_bmap_btree(sc, whichfork, &info); if (error) - goto out; + return error; break; default: xchk_fblock_set_corrupt(sc, whichfork, 0); - goto out; + return 0; } if (sc->sm->sm_flags & XFS_SCRUB_OFLAG_CORRUPT) - goto out; + return 0; /* Find the offset of the last extent in the mapping. */ error = xfs_bmap_last_offset(ip, &endoff, whichfork); if (!xchk_fblock_process_error(sc, whichfork, 0, &error)) - goto out; + return error; /* * Scrub extent records. We use a special iterator function here that @@ -913,12 +910,12 @@ xchk_bmap( while (xchk_bmap_iext_iter(&info, &irec)) { if (xchk_should_terminate(sc, &error) || (sc->sm->sm_flags & XFS_SCRUB_OFLAG_CORRUPT)) - goto out; + return 0; if (irec.br_startoff >= endoff) { xchk_fblock_set_corrupt(sc, whichfork, irec.br_startoff); - goto out; + return 0; } if (isnullstartblock(irec.br_startblock)) @@ -931,10 +928,10 @@ xchk_bmap( if (xchk_bmap_want_check_rmaps(&info)) { error = xchk_bmap_check_rmaps(sc, whichfork); if (!xchk_fblock_xref_process_error(sc, whichfork, 0, &error)) - goto out; + return error; } -out: - return error; + + return 0; } /* Scrub an inode's data fork. */ @@ -958,8 +955,5 @@ int xchk_bmap_cow( struct xfs_scrub *sc) { - if (!xfs_is_reflink_inode(sc->ip)) - return -ENOENT; - return xchk_bmap(sc, XFS_COW_FORK); } diff --git a/fs/xfs/scrub/common.c b/fs/xfs/scrub/common.c index 7a20256be969..de24532fe083 100644 --- a/fs/xfs/scrub/common.c +++ b/fs/xfs/scrub/common.c @@ -832,6 +832,25 @@ xchk_install_handle_inode( } /* + * Install an already-referenced inode for scrubbing. Get our own reference to + * the inode to make disposal simpler. The inode must not be in I_FREEING or + * I_WILL_FREE state! + */ +int +xchk_install_live_inode( + struct xfs_scrub *sc, + struct xfs_inode *ip) +{ + if (!igrab(VFS_I(ip))) { + xchk_ino_set_corrupt(sc, ip->i_ino); + return -EFSCORRUPTED; + } + + sc->ip = ip; + return 0; +} + +/* * In preparation to scrub metadata structures that hang off of an inode, * grab either the inode referenced in the scrub control structure or the * inode passed in. If the inumber does not reference an allocated inode @@ -854,10 +873,8 @@ xchk_iget_for_scrubbing( ASSERT(sc->tp == NULL); /* We want to scan the inode we already had opened. */ - if (sc->sm->sm_ino == 0 || sc->sm->sm_ino == ip_in->i_ino) { - sc->ip = ip_in; - return 0; - } + if (sc->sm->sm_ino == 0 || sc->sm->sm_ino == ip_in->i_ino) + return xchk_install_live_inode(sc, ip_in); /* Reject internal metadata files and obviously bad inode numbers. */ if (xfs_internal_inum(mp, sc->sm->sm_ino)) @@ -1005,20 +1022,48 @@ xchk_setup_inode_contents( return error; /* Lock the inode so the VFS cannot touch this file. */ - sc->ilock_flags = XFS_IOLOCK_EXCL; - xfs_ilock(sc->ip, sc->ilock_flags); + xchk_ilock(sc, XFS_IOLOCK_EXCL); error = xchk_trans_alloc(sc, resblks); if (error) goto out; - sc->ilock_flags |= XFS_ILOCK_EXCL; - xfs_ilock(sc->ip, XFS_ILOCK_EXCL); - + xchk_ilock(sc, XFS_ILOCK_EXCL); out: /* scrub teardown will unlock and release the inode for us */ return error; } +void +xchk_ilock( + struct xfs_scrub *sc, + unsigned int ilock_flags) +{ + xfs_ilock(sc->ip, ilock_flags); + sc->ilock_flags |= ilock_flags; +} + +bool +xchk_ilock_nowait( + struct xfs_scrub *sc, + unsigned int ilock_flags) +{ + if (xfs_ilock_nowait(sc->ip, ilock_flags)) { + sc->ilock_flags |= ilock_flags; + return true; + } + + return false; +} + +void +xchk_iunlock( + struct xfs_scrub *sc, + unsigned int ilock_flags) +{ + sc->ilock_flags &= ~ilock_flags; + xfs_iunlock(sc->ip, ilock_flags); +} + /* * Predicate that decides if we need to evaluate the cross-reference check. * If there was an error accessing the cross-reference btree, just delete @@ -1185,3 +1230,155 @@ xchk_fsgates_enable( sc->flags |= scrub_fsgates; } + +/* + * Decide if this is this a cached inode that's also allocated. The caller + * must hold a reference to an AG and the AGI buffer lock to prevent inodes + * from being allocated or freed. + * + * Look up an inode by number in the given file system. If the inode number + * is invalid, return -EINVAL. If the inode is not in cache, return -ENODATA. + * If the inode is being reclaimed, return -ENODATA because we know the inode + * cache cannot be updating the ondisk metadata. + * + * Otherwise, the incore inode is the one we want, and it is either live, + * somewhere in the inactivation machinery, or reclaimable. The inode is + * allocated if i_mode is nonzero. In all three cases, the cached inode will + * be more up to date than the ondisk inode buffer, so we must use the incore + * i_mode. + */ +int +xchk_inode_is_allocated( + struct xfs_scrub *sc, + xfs_agino_t agino, + bool *inuse) +{ + struct xfs_mount *mp = sc->mp; + struct xfs_perag *pag = sc->sa.pag; + xfs_ino_t ino; + struct xfs_inode *ip; + int error; + + /* caller must hold perag reference */ + if (pag == NULL) { + ASSERT(pag != NULL); + return -EINVAL; + } + + /* caller must have AGI buffer */ + if (sc->sa.agi_bp == NULL) { + ASSERT(sc->sa.agi_bp != NULL); + return -EINVAL; + } + + /* reject inode numbers outside existing AGs */ + ino = XFS_AGINO_TO_INO(sc->mp, pag->pag_agno, agino); + if (!xfs_verify_ino(mp, ino)) + return -EINVAL; + + error = -ENODATA; + rcu_read_lock(); + ip = radix_tree_lookup(&pag->pag_ici_root, agino); + if (!ip) { + /* cache miss */ + goto out_rcu; + } + + /* + * If the inode number doesn't match, the incore inode got reused + * during an RCU grace period and the radix tree hasn't been updated. + * This isn't the inode we want. + */ + spin_lock(&ip->i_flags_lock); + if (ip->i_ino != ino) + goto out_skip; + + trace_xchk_inode_is_allocated(ip); + + /* + * We have an incore inode that matches the inode we want, and the + * caller holds the perag structure and the AGI buffer. Let's check + * our assumptions below: + */ + +#ifdef DEBUG + /* + * (1) If the incore inode is live (i.e. referenced from the dcache), + * it will not be INEW, nor will it be in the inactivation or reclaim + * machinery. The ondisk inode had better be allocated. This is the + * most trivial case. + */ + if (!(ip->i_flags & (XFS_NEED_INACTIVE | XFS_INEW | XFS_IRECLAIMABLE | + XFS_INACTIVATING))) { + /* live inode */ + ASSERT(VFS_I(ip)->i_mode != 0); + } + + /* + * If the incore inode is INEW, there are several possibilities: + * + * (2) For a file that is being created, note that we allocate the + * ondisk inode before allocating, initializing, and adding the incore + * inode to the radix tree. + * + * (3) If the incore inode is being recycled, the inode has to be + * allocated because we don't allow freed inodes to be recycled. + * Recycling doesn't touch i_mode. + */ + if (ip->i_flags & XFS_INEW) { + /* created on disk already or recycling */ + ASSERT(VFS_I(ip)->i_mode != 0); + } + + /* + * (4) If the inode is queued for inactivation (NEED_INACTIVE) but + * inactivation has not started (!INACTIVATING), it is still allocated. + */ + if ((ip->i_flags & XFS_NEED_INACTIVE) && + !(ip->i_flags & XFS_INACTIVATING)) { + /* definitely before difree */ + ASSERT(VFS_I(ip)->i_mode != 0); + } +#endif + + /* + * If the incore inode is undergoing inactivation (INACTIVATING), there + * are two possibilities: + * + * (5) It is before the point where it would get freed ondisk, in which + * case i_mode is still nonzero. + * + * (6) It has already been freed, in which case i_mode is zero. + * + * We don't take the ILOCK here, but difree and dialloc update the AGI, + * and we've taken the AGI buffer lock, which prevents that from + * happening. + */ + + /* + * (7) Inodes undergoing inactivation (INACTIVATING) or queued for + * reclaim (IRECLAIMABLE) could be allocated or free. i_mode still + * reflects the ondisk state. + */ + + /* + * (8) If the inode is in IFLUSHING, it's safe to query i_mode because + * the flush code uses i_mode to format the ondisk inode. + */ + + /* + * (9) If the inode is in IRECLAIM and was reachable via the radix + * tree, it still has the same i_mode as it did before it entered + * reclaim. The inode object is still alive because we hold the RCU + * read lock. + */ + + *inuse = VFS_I(ip)->i_mode != 0; + error = 0; + +out_skip: + spin_unlock(&ip->i_flags_lock); +out_rcu: + rcu_read_unlock(); + return error; +} diff --git a/fs/xfs/scrub/common.h b/fs/xfs/scrub/common.h index 791235cd9b00..cabdc0e16838 100644 --- a/fs/xfs/scrub/common.h +++ b/fs/xfs/scrub/common.h @@ -88,10 +88,16 @@ int xchk_setup_xattr(struct xfs_scrub *sc); int xchk_setup_symlink(struct xfs_scrub *sc); int xchk_setup_parent(struct xfs_scrub *sc); #ifdef CONFIG_XFS_RT -int xchk_setup_rt(struct xfs_scrub *sc); +int xchk_setup_rtbitmap(struct xfs_scrub *sc); +int xchk_setup_rtsummary(struct xfs_scrub *sc); #else static inline int -xchk_setup_rt(struct xfs_scrub *sc) +xchk_setup_rtbitmap(struct xfs_scrub *sc) +{ + return -ENOENT; +} +static inline int +xchk_setup_rtsummary(struct xfs_scrub *sc) { return -ENOENT; } @@ -137,6 +143,12 @@ int xchk_count_rmap_ownedby_ag(struct xfs_scrub *sc, struct xfs_btree_cur *cur, int xchk_setup_ag_btree(struct xfs_scrub *sc, bool force_log); int xchk_iget_for_scrubbing(struct xfs_scrub *sc); int xchk_setup_inode_contents(struct xfs_scrub *sc, unsigned int resblks); +int xchk_install_live_inode(struct xfs_scrub *sc, struct xfs_inode *ip); + +void xchk_ilock(struct xfs_scrub *sc, unsigned int ilock_flags); +bool xchk_ilock_nowait(struct xfs_scrub *sc, unsigned int ilock_flags); +void xchk_iunlock(struct xfs_scrub *sc, unsigned int ilock_flags); + void xchk_buffer_recheck(struct xfs_scrub *sc, struct xfs_buf *bp); int xchk_iget(struct xfs_scrub *sc, xfs_ino_t inum, struct xfs_inode **ipp); @@ -155,9 +167,29 @@ static inline bool xchk_skip_xref(struct xfs_scrub_metadata *sm) XFS_SCRUB_OFLAG_XCORRUPT); } +#ifdef CONFIG_XFS_ONLINE_REPAIR +/* Decide if a repair is required. */ +static inline bool xchk_needs_repair(const struct xfs_scrub_metadata *sm) +{ + return sm->sm_flags & (XFS_SCRUB_OFLAG_CORRUPT | + XFS_SCRUB_OFLAG_XCORRUPT | + XFS_SCRUB_OFLAG_PREEN); +} +#else +# define xchk_needs_repair(sc) (false) +#endif /* CONFIG_XFS_ONLINE_REPAIR */ + int xchk_metadata_inode_forks(struct xfs_scrub *sc); /* + * Helper macros to allocate and format xfile description strings. + * Callers must kfree the pointer returned. + */ +#define xchk_xfile_descr(sc, fmt, ...) \ + kasprintf(XCHK_GFP_FLAGS, "XFS (%s): " fmt, \ + (sc)->mp->m_super->s_id, ##__VA_ARGS__) + +/* * Setting up a hook to wait for intents to drain is costly -- we have to take * the CPU hotplug lock and force an i-cache flush on all CPUs once to set it * up, and again to tear it down. These costs add up quickly, so we only want @@ -171,4 +203,7 @@ static inline bool xchk_need_intent_drain(struct xfs_scrub *sc) void xchk_fsgates_enable(struct xfs_scrub *sc, unsigned int scrub_fshooks); +int xchk_inode_is_allocated(struct xfs_scrub *sc, xfs_agino_t agino, + bool *inuse); + #endif /* __XFS_SCRUB_COMMON_H__ */ diff --git a/fs/xfs/scrub/fscounters.c b/fs/xfs/scrub/fscounters.c index e382a35e98d8..05be757668bb 100644 --- a/fs/xfs/scrub/fscounters.c +++ b/fs/xfs/scrub/fscounters.c @@ -1,4 +1,4 @@ -// SPDX-License-Identifier: GPL-2.0+ +// SPDX-License-Identifier: GPL-2.0-or-later /* * Copyright (C) 2019-2023 Oracle. All Rights Reserved. * Author: Darrick J. Wong <djwong@kernel.org> @@ -8,6 +8,8 @@ #include "xfs_shared.h" #include "xfs_format.h" #include "xfs_trans_resv.h" +#include "xfs_log_format.h" +#include "xfs_trans.h" #include "xfs_mount.h" #include "xfs_alloc.h" #include "xfs_ialloc.h" @@ -16,6 +18,7 @@ #include "xfs_ag.h" #include "xfs_rtalloc.h" #include "xfs_inode.h" +#include "xfs_icache.h" #include "scrub/scrub.h" #include "scrub/common.h" #include "scrub/trace.h" @@ -53,6 +56,7 @@ struct xchk_fscounters { uint64_t frextents; unsigned long long icount_min; unsigned long long icount_max; + bool frozen; }; /* @@ -123,6 +127,82 @@ xchk_fscount_warmup( return error; } +static inline int +xchk_fsfreeze( + struct xfs_scrub *sc) +{ + int error; + + error = freeze_super(sc->mp->m_super, FREEZE_HOLDER_KERNEL); + trace_xchk_fsfreeze(sc, error); + return error; +} + +static inline int +xchk_fsthaw( + struct xfs_scrub *sc) +{ + int error; + + /* This should always succeed, we have a kernel freeze */ + error = thaw_super(sc->mp->m_super, FREEZE_HOLDER_KERNEL); + trace_xchk_fsthaw(sc, error); + return error; +} + +/* + * We couldn't stabilize the filesystem long enough to sample all the variables + * that comprise the summary counters and compare them to the percpu counters. + * We need to disable all writer threads, which means taking the first two + * freeze levels to put userspace to sleep, and the third freeze level to + * prevent background threads from starting new transactions. Take one level + * more to prevent other callers from unfreezing the filesystem while we run. + */ +STATIC int +xchk_fscounters_freeze( + struct xfs_scrub *sc) +{ + struct xchk_fscounters *fsc = sc->buf; + int error = 0; + + if (sc->flags & XCHK_HAVE_FREEZE_PROT) { + sc->flags &= ~XCHK_HAVE_FREEZE_PROT; + mnt_drop_write_file(sc->file); + } + + /* Try to grab a kernel freeze. */ + while ((error = xchk_fsfreeze(sc)) == -EBUSY) { + if (xchk_should_terminate(sc, &error)) + return error; + + delay(HZ / 10); + } + if (error) + return error; + + fsc->frozen = true; + return 0; +} + +/* Thaw the filesystem after checking or repairing fscounters. */ +STATIC void +xchk_fscounters_cleanup( + void *buf) +{ + struct xchk_fscounters *fsc = buf; + struct xfs_scrub *sc = fsc->sc; + int error; + + if (!fsc->frozen) + return; + + error = xchk_fsthaw(sc); + if (error) + xfs_emerg(sc->mp, "still frozen after scrub, err=%d", error); + else + fsc->frozen = false; +} + int xchk_setup_fscounters( struct xfs_scrub *sc) @@ -140,6 +220,7 @@ xchk_setup_fscounters( sc->buf = kzalloc(sizeof(struct xchk_fscounters), XCHK_GFP_FLAGS); if (!sc->buf) return -ENOMEM; + sc->buf_cleanup = xchk_fscounters_cleanup; fsc = sc->buf; fsc->sc = sc; @@ -150,7 +231,18 @@ xchk_setup_fscounters( if (error) return error; - return xchk_trans_alloc(sc, 0); + /* + * Pause all writer activity in the filesystem while we're scrubbing to + * reduce the likelihood of background perturbations to the counters + * throwing off our calculations. + */ + if (sc->flags & XCHK_TRY_HARDER) { + error = xchk_fscounters_freeze(sc); + if (error) + return error; + } + + return xfs_trans_alloc_empty(sc->mp, &sc->tp); } /* @@ -290,8 +382,7 @@ retry: if (fsc->ifree > fsc->icount) { if (tries--) goto retry; - xchk_set_incomplete(sc); - return 0; + return -EDEADLOCK; } return 0; @@ -367,6 +458,8 @@ xchk_fscount_count_frextents( * Otherwise, we /might/ have a problem. If the change in the summations is * more than we want to tolerate, the filesystem is probably busy and we should * just send back INCOMPLETE and see if userspace will try again. + * + * If we're repairing then we require an exact match. */ static inline bool xchk_fscount_within_range( @@ -396,21 +489,7 @@ xchk_fscount_within_range( if (expected >= min_value && expected <= max_value) return true; - /* - * If the difference between the two summations is too large, the fs - * might just be busy and so we'll mark the scrub incomplete. Return - * true here so that we don't mark the counter corrupt. - * - * XXX: In the future when userspace can grant scrub permission to - * quiesce the filesystem to solve the outsized variance problem, this - * check should be moved up and the return code changed to signal to - * userspace that we need quiesce permission. - */ - if (max_value - min_value >= XCHK_FSCOUNT_MIN_VARIANCE) { - xchk_set_incomplete(sc); - return true; - } - + /* Everything else is bad. */ return false; } @@ -422,6 +501,7 @@ xchk_fscounters( struct xfs_mount *mp = sc->mp; struct xchk_fscounters *fsc = sc->buf; int64_t icount, ifree, fdblocks, frextents; + bool try_again = false; int error; /* Snapshot the percpu counters. */ @@ -431,9 +511,26 @@ xchk_fscounters( frextents = percpu_counter_sum(&mp->m_frextents); /* No negative values, please! */ - if (icount < 0 || ifree < 0 || fdblocks < 0 || frextents < 0) + if (icount < 0 || ifree < 0) xchk_set_corrupt(sc); + /* + * If the filesystem is not frozen, the counter summation calls above + * can race with xfs_mod_freecounter, which subtracts a requested space + * reservation from the counter and undoes the subtraction if that made + * the counter go negative. Therefore, it's possible to see negative + * values here, and we should only flag that as a corruption if we + * froze the fs. This is much more likely to happen with frextents + * since there are no reserved pools. + */ + if (fdblocks < 0 || frextents < 0) { + if (!fsc->frozen) + return -EDEADLOCK; + + xchk_set_corrupt(sc); + return 0; + } + /* See if icount is obviously wrong. */ if (icount < fsc->icount_min || icount > fsc->icount_max) xchk_set_corrupt(sc); @@ -447,12 +544,6 @@ xchk_fscounters( xchk_set_corrupt(sc); /* - * XXX: We can't quiesce percpu counter updates, so exit early. - * This can be re-enabled when we gain exclusive freeze functionality. - */ - return 0; - - /* * If ifree exceeds icount by more than the minimum variance then * something's probably wrong with the counters. */ @@ -463,8 +554,6 @@ xchk_fscounters( error = xchk_fscount_aggregate_agcounts(sc, fsc); if (!xchk_process_error(sc, 0, XFS_SB_BLOCK(mp), &error)) return error; - if (sc->sm->sm_flags & XFS_SCRUB_OFLAG_INCOMPLETE) - return 0; /* Count the free extents counter for rt volumes. */ error = xchk_fscount_count_frextents(sc, fsc); @@ -473,20 +562,45 @@ xchk_fscounters( if (sc->sm->sm_flags & XFS_SCRUB_OFLAG_INCOMPLETE) return 0; - /* Compare the in-core counters with whatever we counted. */ - if (!xchk_fscount_within_range(sc, icount, &mp->m_icount, fsc->icount)) - xchk_set_corrupt(sc); + /* + * Compare the in-core counters with whatever we counted. If the fs is + * frozen, we treat the discrepancy as a corruption because the freeze + * should have stabilized the counter values. Otherwise, we need + * userspace to call us back having granted us freeze permission. + */ + if (!xchk_fscount_within_range(sc, icount, &mp->m_icount, + fsc->icount)) { + if (fsc->frozen) + xchk_set_corrupt(sc); + else + try_again = true; + } - if (!xchk_fscount_within_range(sc, ifree, &mp->m_ifree, fsc->ifree)) - xchk_set_corrupt(sc); + if (!xchk_fscount_within_range(sc, ifree, &mp->m_ifree, fsc->ifree)) { + if (fsc->frozen) + xchk_set_corrupt(sc); + else + try_again = true; + } if (!xchk_fscount_within_range(sc, fdblocks, &mp->m_fdblocks, - fsc->fdblocks)) - xchk_set_corrupt(sc); + fsc->fdblocks)) { + if (fsc->frozen) + xchk_set_corrupt(sc); + else + try_again = true; + } if (!xchk_fscount_within_range(sc, frextents, &mp->m_frextents, - fsc->frextents)) - xchk_set_corrupt(sc); + fsc->frextents)) { + if (fsc->frozen) + xchk_set_corrupt(sc); + else + try_again = true; + } + + if (try_again) + return -EDEADLOCK; return 0; } diff --git a/fs/xfs/scrub/health.c b/fs/xfs/scrub/health.c index d2b2a1cb6533..5e2b09ed6e29 100644 --- a/fs/xfs/scrub/health.c +++ b/fs/xfs/scrub/health.c @@ -226,6 +226,16 @@ xchk_ag_btree_healthy_enough( return true; } + /* + * If we just repaired some AG metadata, sc->sick_mask will reflect all + * the per-AG metadata types that were repaired. Exclude these from + * the filesystem health query because we have not yet updated the + * health status and we want everything to be scanned. + */ + if ((sc->flags & XREP_ALREADY_FIXED) && + type_to_health_flag[sc->sm->sm_type].group == XHG_AG) + mask &= ~sc->sick_mask; + if (xfs_ag_has_sickness(pag, mask)) { sc->sm->sm_flags |= XFS_SCRUB_OFLAG_XFAIL; return false; diff --git a/fs/xfs/scrub/ialloc.c b/fs/xfs/scrub/ialloc.c index 575f22a02ebe..fb7bbf47ae5d 100644 --- a/fs/xfs/scrub/ialloc.c +++ b/fs/xfs/scrub/ialloc.c @@ -328,8 +328,7 @@ xchk_iallocbt_check_cluster_ifree( goto out; } - error = xfs_icache_inode_is_allocated(mp, bs->cur->bc_tp, fsino, - &ino_inuse); + error = xchk_inode_is_allocated(bs->sc, agino, &ino_inuse); if (error == -ENODATA) { /* Not cached, just read the disk buffer */ freemask_ok = irec_free ^ !!(dip->di_mode); diff --git a/fs/xfs/scrub/inode.c b/fs/xfs/scrub/inode.c index 3e1e02e340a6..59d7912fb75f 100644 --- a/fs/xfs/scrub/inode.c +++ b/fs/xfs/scrub/inode.c @@ -32,15 +32,13 @@ xchk_prepare_iscrub( { int error; - sc->ilock_flags = XFS_IOLOCK_EXCL; - xfs_ilock(sc->ip, sc->ilock_flags); + xchk_ilock(sc, XFS_IOLOCK_EXCL); error = xchk_trans_alloc(sc, 0); if (error) return error; - sc->ilock_flags |= XFS_ILOCK_EXCL; - xfs_ilock(sc->ip, XFS_ILOCK_EXCL); + xchk_ilock(sc, XFS_ILOCK_EXCL); return 0; } @@ -83,7 +81,10 @@ xchk_setup_inode( /* We want to scan the opened inode, so lock it and exit. */ if (sc->sm->sm_ino == 0 || sc->sm->sm_ino == ip_in->i_ino) { - sc->ip = ip_in; + error = xchk_install_live_inode(sc, ip_in); + if (error) + return error; + return xchk_prepare_iscrub(sc); } diff --git a/fs/xfs/scrub/parent.c b/fs/xfs/scrub/parent.c index 58d5dfb7ea21..e6155d86f791 100644 --- a/fs/xfs/scrub/parent.c +++ b/fs/xfs/scrub/parent.c @@ -150,8 +150,8 @@ xchk_parent_validate( lock_mode = xchk_parent_ilock_dir(dp); if (!lock_mode) { - xfs_iunlock(sc->ip, XFS_ILOCK_EXCL); - xfs_ilock(sc->ip, XFS_ILOCK_EXCL); + xchk_iunlock(sc, XFS_ILOCK_EXCL); + xchk_ilock(sc, XFS_ILOCK_EXCL); error = -EAGAIN; goto out_rele; } diff --git a/fs/xfs/scrub/quota.c b/fs/xfs/scrub/quota.c index e6caa358cbda..5671c8153433 100644 --- a/fs/xfs/scrub/quota.c +++ b/fs/xfs/scrub/quota.c @@ -59,9 +59,12 @@ xchk_setup_quota( error = xchk_setup_fs(sc); if (error) return error; - sc->ip = xfs_quota_inode(sc->mp, dqtype); - xfs_ilock(sc->ip, XFS_ILOCK_EXCL); - sc->ilock_flags = XFS_ILOCK_EXCL; + + error = xchk_install_live_inode(sc, xfs_quota_inode(sc->mp, dqtype)); + if (error) + return error; + + xchk_ilock(sc, XFS_ILOCK_EXCL); return 0; } @@ -235,13 +238,11 @@ xchk_quota( * data fork we have to drop ILOCK_EXCL to use the regular dquot * functions. */ - xfs_iunlock(sc->ip, sc->ilock_flags); - sc->ilock_flags = 0; + xchk_iunlock(sc, sc->ilock_flags); sqi.sc = sc; sqi.last_id = 0; error = xfs_qm_dqiterate(mp, dqtype, xchk_quota_item, &sqi); - sc->ilock_flags = XFS_ILOCK_EXCL; - xfs_ilock(sc->ip, sc->ilock_flags); + xchk_ilock(sc, XFS_ILOCK_EXCL); if (error == -ECANCELED) error = 0; if (!xchk_fblock_process_error(sc, XFS_DATA_FORK, diff --git a/fs/xfs/scrub/reap.c b/fs/xfs/scrub/reap.c new file mode 100644 index 000000000000..86a62420e02c --- /dev/null +++ b/fs/xfs/scrub/reap.c @@ -0,0 +1,498 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Copyright (C) 2022-2023 Oracle. All Rights Reserved. + * Author: Darrick J. Wong <djwong@kernel.org> + */ +#include "xfs.h" +#include "xfs_fs.h" +#include "xfs_shared.h" +#include "xfs_format.h" +#include "xfs_trans_resv.h" +#include "xfs_mount.h" +#include "xfs_btree.h" +#include "xfs_log_format.h" +#include "xfs_trans.h" +#include "xfs_sb.h" +#include "xfs_inode.h" +#include "xfs_alloc.h" +#include "xfs_alloc_btree.h" +#include "xfs_ialloc.h" +#include "xfs_ialloc_btree.h" +#include "xfs_rmap.h" +#include "xfs_rmap_btree.h" +#include "xfs_refcount_btree.h" +#include "xfs_extent_busy.h" +#include "xfs_ag.h" +#include "xfs_ag_resv.h" +#include "xfs_quota.h" +#include "xfs_qm.h" +#include "xfs_bmap.h" +#include "xfs_da_format.h" +#include "xfs_da_btree.h" +#include "xfs_attr.h" +#include "xfs_attr_remote.h" +#include "scrub/scrub.h" +#include "scrub/common.h" +#include "scrub/trace.h" +#include "scrub/repair.h" +#include "scrub/bitmap.h" +#include "scrub/reap.h" + +/* + * Disposal of Blocks from Old Metadata + * + * Now that we've constructed a new btree to replace the damaged one, we want + * to dispose of the blocks that (we think) the old btree was using. + * Previously, we used the rmapbt to collect the extents (bitmap) with the + * rmap owner corresponding to the tree we rebuilt, collected extents for any + * blocks with the same rmap owner that are owned by another data structure + * (sublist), and subtracted sublist from bitmap. In theory the extents + * remaining in bitmap are the old btree's blocks. + * + * Unfortunately, it's possible that the btree was crosslinked with other + * blocks on disk. The rmap data can tell us if there are multiple owners, so + * if the rmapbt says there is an owner of this block other than @oinfo, then + * the block is crosslinked. Remove the reverse mapping and continue. + * + * If there is one rmap record, we can free the block, which removes the + * reverse mapping but doesn't add the block to the free space. Our repair + * strategy is to hope the other metadata objects crosslinked on this block + * will be rebuilt (atop different blocks), thereby removing all the cross + * links. + * + * If there are no rmap records at all, we also free the block. If the btree + * being rebuilt lives in the free space (bnobt/cntbt/rmapbt) then there isn't + * supposed to be a rmap record and everything is ok. For other btrees there + * had to have been an rmap entry for the block to have ended up on @bitmap, + * so if it's gone now there's something wrong and the fs will shut down. + * + * Note: If there are multiple rmap records with only the same rmap owner as + * the btree we're trying to rebuild and the block is indeed owned by another + * data structure with the same rmap owner, then the block will be in sublist + * and therefore doesn't need disposal. If there are multiple rmap records + * with only the same rmap owner but the block is not owned by something with + * the same rmap owner, the block will be freed. + * + * The caller is responsible for locking the AG headers for the entire rebuild + * operation so that nothing else can sneak in and change the AG state while + * we're not looking. We must also invalidate any buffers associated with + * @bitmap. + */ + +/* Information about reaping extents after a repair. */ +struct xreap_state { + struct xfs_scrub *sc; + + /* Reverse mapping owner and metadata reservation type. */ + const struct xfs_owner_info *oinfo; + enum xfs_ag_resv_type resv; + + /* If true, roll the transaction before reaping the next extent. */ + bool force_roll; + + /* Number of deferred reaps attached to the current transaction. */ + unsigned int deferred; + + /* Number of invalidated buffers logged to the current transaction. */ + unsigned int invalidated; + + /* Number of deferred reaps queued during the whole reap sequence. */ + unsigned long long total_deferred; +}; + +/* Put a block back on the AGFL. */ +STATIC int +xreap_put_freelist( + struct xfs_scrub *sc, + xfs_agblock_t agbno) +{ + struct xfs_buf *agfl_bp; + int error; + + /* Make sure there's space on the freelist. */ + error = xrep_fix_freelist(sc, true); + if (error) + return error; + + /* + * Since we're "freeing" a lost block onto the AGFL, we have to + * create an rmap for the block prior to merging it or else other + * parts will break. + */ + error = xfs_rmap_alloc(sc->tp, sc->sa.agf_bp, sc->sa.pag, agbno, 1, + &XFS_RMAP_OINFO_AG); + if (error) + return error; + + /* Put the block on the AGFL. */ + error = xfs_alloc_read_agfl(sc->sa.pag, sc->tp, &agfl_bp); + if (error) + return error; + + error = xfs_alloc_put_freelist(sc->sa.pag, sc->tp, sc->sa.agf_bp, + agfl_bp, agbno, 0); + if (error) + return error; + xfs_extent_busy_insert(sc->tp, sc->sa.pag, agbno, 1, + XFS_EXTENT_BUSY_SKIP_DISCARD); + + return 0; +} + +/* Are there any uncommitted reap operations? */ +static inline bool xreap_dirty(const struct xreap_state *rs) +{ + if (rs->force_roll) + return true; + if (rs->deferred) + return true; + if (rs->invalidated) + return true; + if (rs->total_deferred) + return true; + return false; +} + +#define XREAP_MAX_BINVAL (2048) + +/* + * Decide if we want to roll the transaction after reaping an extent. We don't + * want to overrun the transaction reservation, so we prohibit more than + * 128 EFIs per transaction. For the same reason, we limit the number + * of buffer invalidations to 2048. + */ +static inline bool xreap_want_roll(const struct xreap_state *rs) +{ + if (rs->force_roll) + return true; + if (rs->deferred > XREP_MAX_ITRUNCATE_EFIS) + return true; + if (rs->invalidated > XREAP_MAX_BINVAL) + return true; + return false; +} + +static inline void xreap_reset(struct xreap_state *rs) +{ + rs->total_deferred += rs->deferred; + rs->deferred = 0; + rs->invalidated = 0; + rs->force_roll = false; +} + +#define XREAP_MAX_DEFER_CHAIN (2048) + +/* + * Decide if we want to finish the deferred ops that are attached to the scrub + * transaction. We don't want to queue huge chains of deferred ops because + * that can consume a lot of log space and kernel memory. Hence we trigger a + * xfs_defer_finish if there are more than 2048 deferred reap operations or the + * caller did some real work. + */ +static inline bool +xreap_want_defer_finish(const struct xreap_state *rs) +{ + if (rs->force_roll) + return true; + if (rs->total_deferred > XREAP_MAX_DEFER_CHAIN) + return true; + return false; +} + +static inline void xreap_defer_finish_reset(struct xreap_state *rs) +{ + rs->total_deferred = 0; + rs->deferred = 0; + rs->invalidated = 0; + rs->force_roll = false; +} + +/* Try to invalidate the incore buffers for an extent that we're freeing. */ +STATIC void +xreap_agextent_binval( + struct xreap_state *rs, + xfs_agblock_t agbno, + xfs_extlen_t *aglenp) +{ + struct xfs_scrub *sc = rs->sc; + struct xfs_perag *pag = sc->sa.pag; + struct xfs_mount *mp = sc->mp; + xfs_agnumber_t agno = sc->sa.pag->pag_agno; + xfs_agblock_t agbno_next = agbno + *aglenp; + xfs_agblock_t bno = agbno; + + /* + * Avoid invalidating AG headers and post-EOFS blocks because we never + * own those. + */ + if (!xfs_verify_agbno(pag, agbno) || + !xfs_verify_agbno(pag, agbno_next - 1)) + return; + + /* + * If there are incore buffers for these blocks, invalidate them. We + * assume that the lack of any other known owners means that the buffer + * can be locked without risk of deadlocking. The buffer cache cannot + * detect aliasing, so employ nested loops to scan for incore buffers + * of any plausible size. + */ + while (bno < agbno_next) { + xfs_agblock_t fsbcount; + xfs_agblock_t max_fsbs; + + /* + * Max buffer size is the max remote xattr buffer size, which + * is one fs block larger than 64k. + */ + max_fsbs = min_t(xfs_agblock_t, agbno_next - bno, + xfs_attr3_rmt_blocks(mp, XFS_XATTR_SIZE_MAX)); + + for (fsbcount = 1; fsbcount < max_fsbs; fsbcount++) { + struct xfs_buf *bp = NULL; + xfs_daddr_t daddr; + int error; + + daddr = XFS_AGB_TO_DADDR(mp, agno, bno); + error = xfs_buf_incore(mp->m_ddev_targp, daddr, + XFS_FSB_TO_BB(mp, fsbcount), + XBF_LIVESCAN, &bp); + if (error) + continue; + + xfs_trans_bjoin(sc->tp, bp); + xfs_trans_binval(sc->tp, bp); + rs->invalidated++; + + /* + * Stop invalidating if we've hit the limit; we should + * still have enough reservation left to free however + * far we've gotten. + */ + if (rs->invalidated > XREAP_MAX_BINVAL) { + *aglenp -= agbno_next - bno; + goto out; + } + } + + bno++; + } + +out: + trace_xreap_agextent_binval(sc->sa.pag, agbno, *aglenp); +} + +/* + * Figure out the longest run of blocks that we can dispose of with a single + * call. Cross-linked blocks should have their reverse mappings removed, but + * single-owner extents can be freed. AGFL blocks can only be put back one at + * a time. + */ +STATIC int +xreap_agextent_select( + struct xreap_state *rs, + xfs_agblock_t agbno, + xfs_agblock_t agbno_next, + bool *crosslinked, + xfs_extlen_t *aglenp) +{ + struct xfs_scrub *sc = rs->sc; + struct xfs_btree_cur *cur; + xfs_agblock_t bno = agbno + 1; + xfs_extlen_t len = 1; + int error; + + /* + * Determine if there are any other rmap records covering the first + * block of this extent. If so, the block is crosslinked. + */ + cur = xfs_rmapbt_init_cursor(sc->mp, sc->tp, sc->sa.agf_bp, + sc->sa.pag); + error = xfs_rmap_has_other_keys(cur, agbno, 1, rs->oinfo, + crosslinked); + if (error) + goto out_cur; + + /* AGFL blocks can only be deal with one at a time. */ + if (rs->resv == XFS_AG_RESV_AGFL) + goto out_found; + + /* + * Figure out how many of the subsequent blocks have the same crosslink + * status. + */ + while (bno < agbno_next) { + bool also_crosslinked; + + error = xfs_rmap_has_other_keys(cur, bno, 1, rs->oinfo, + &also_crosslinked); + if (error) + goto out_cur; + + if (*crosslinked != also_crosslinked) + break; + + len++; + bno++; + } + +out_found: + *aglenp = len; + trace_xreap_agextent_select(sc->sa.pag, agbno, len, *crosslinked); +out_cur: + xfs_btree_del_cursor(cur, error); + return error; +} + +/* + * Dispose of as much of the beginning of this AG extent as possible. The + * number of blocks disposed of will be returned in @aglenp. + */ +STATIC int +xreap_agextent_iter( + struct xreap_state *rs, + xfs_agblock_t agbno, + xfs_extlen_t *aglenp, + bool crosslinked) +{ + struct xfs_scrub *sc = rs->sc; + xfs_fsblock_t fsbno; + int error = 0; + + fsbno = XFS_AGB_TO_FSB(sc->mp, sc->sa.pag->pag_agno, agbno); + + /* + * If there are other rmappings, this block is cross linked and must + * not be freed. Remove the reverse mapping and move on. Otherwise, + * we were the only owner of the block, so free the extent, which will + * also remove the rmap. + * + * XXX: XFS doesn't support detecting the case where a single block + * metadata structure is crosslinked with a multi-block structure + * because the buffer cache doesn't detect aliasing problems, so we + * can't fix 100% of crosslinking problems (yet). The verifiers will + * blow on writeout, the filesystem will shut down, and the admin gets + * to run xfs_repair. + */ + if (crosslinked) { + trace_xreap_dispose_unmap_extent(sc->sa.pag, agbno, *aglenp); + + rs->force_roll = true; + return xfs_rmap_free(sc->tp, sc->sa.agf_bp, sc->sa.pag, agbno, + *aglenp, rs->oinfo); + } + + trace_xreap_dispose_free_extent(sc->sa.pag, agbno, *aglenp); + + /* + * Invalidate as many buffers as we can, starting at agbno. If this + * function sets *aglenp to zero, the transaction is full of logged + * buffer invalidations, so we need to return early so that we can + * roll and retry. + */ + xreap_agextent_binval(rs, agbno, aglenp); + if (*aglenp == 0) { + ASSERT(xreap_want_roll(rs)); + return 0; + } + + /* Put blocks back on the AGFL one at a time. */ + if (rs->resv == XFS_AG_RESV_AGFL) { + ASSERT(*aglenp == 1); + error = xreap_put_freelist(sc, agbno); + if (error) + return error; + + rs->force_roll = true; + return 0; + } + + /* + * Use deferred frees to get rid of the old btree blocks to try to + * minimize the window in which we could crash and lose the old blocks. + */ + error = __xfs_free_extent_later(sc->tp, fsbno, *aglenp, rs->oinfo, + rs->resv, true); + if (error) + return error; + + rs->deferred++; + return 0; +} + +/* + * Break an AG metadata extent into sub-extents by fate (crosslinked, not + * crosslinked), and dispose of each sub-extent separately. + */ +STATIC int +xreap_agmeta_extent( + uint64_t fsbno, + uint64_t len, + void *priv) +{ + struct xreap_state *rs = priv; + struct xfs_scrub *sc = rs->sc; + xfs_agblock_t agbno = fsbno; + xfs_agblock_t agbno_next = agbno + len; + int error = 0; + + ASSERT(len <= XFS_MAX_BMBT_EXTLEN); + ASSERT(sc->ip == NULL); + + while (agbno < agbno_next) { + xfs_extlen_t aglen; + bool crosslinked; + + error = xreap_agextent_select(rs, agbno, agbno_next, + &crosslinked, &aglen); + if (error) + return error; + + error = xreap_agextent_iter(rs, agbno, &aglen, crosslinked); + if (error) + return error; + + if (xreap_want_defer_finish(rs)) { + error = xrep_defer_finish(sc); + if (error) + return error; + xreap_defer_finish_reset(rs); + } else if (xreap_want_roll(rs)) { + error = xrep_roll_ag_trans(sc); + if (error) + return error; + xreap_reset(rs); + } + + agbno += aglen; + } + + return 0; +} + +/* Dispose of every block of every AG metadata extent in the bitmap. */ +int +xrep_reap_agblocks( + struct xfs_scrub *sc, + struct xagb_bitmap *bitmap, + const struct xfs_owner_info *oinfo, + enum xfs_ag_resv_type type) +{ + struct xreap_state rs = { + .sc = sc, + .oinfo = oinfo, + .resv = type, + }; + int error; + + ASSERT(xfs_has_rmapbt(sc->mp)); + ASSERT(sc->ip == NULL); + + error = xagb_bitmap_walk(bitmap, xreap_agmeta_extent, &rs); + if (error) + return error; + + if (xreap_dirty(&rs)) + return xrep_defer_finish(sc); + + return 0; +} diff --git a/fs/xfs/scrub/reap.h b/fs/xfs/scrub/reap.h new file mode 100644 index 000000000000..fe24626af164 --- /dev/null +++ b/fs/xfs/scrub/reap.h @@ -0,0 +1,12 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Copyright (C) 2022-2023 Oracle. All Rights Reserved. + * Author: Darrick J. Wong <djwong@kernel.org> + */ +#ifndef __XFS_SCRUB_REAP_H__ +#define __XFS_SCRUB_REAP_H__ + +int xrep_reap_agblocks(struct xfs_scrub *sc, struct xagb_bitmap *bitmap, + const struct xfs_owner_info *oinfo, enum xfs_ag_resv_type type); + +#endif /* __XFS_SCRUB_REAP_H__ */ diff --git a/fs/xfs/scrub/repair.c b/fs/xfs/scrub/repair.c index ac6d8803e660..1b8b5439f2d7 100644 --- a/fs/xfs/scrub/repair.c +++ b/fs/xfs/scrub/repair.c @@ -26,11 +26,13 @@ #include "xfs_ag_resv.h" #include "xfs_quota.h" #include "xfs_qm.h" +#include "xfs_defer.h" #include "scrub/scrub.h" #include "scrub/common.h" #include "scrub/trace.h" #include "scrub/repair.h" #include "scrub/bitmap.h" +#include "scrub/stats.h" /* * Attempt to repair some metadata, if the metadata is corrupt and userspace @@ -39,8 +41,10 @@ */ int xrep_attempt( - struct xfs_scrub *sc) + struct xfs_scrub *sc, + struct xchk_stats_run *run) { + u64 repair_start; int error = 0; trace_xrep_attempt(XFS_I(file_inode(sc->file)), sc->sm, error); @@ -49,8 +53,11 @@ xrep_attempt( /* Repair whatever's broken. */ ASSERT(sc->ops->repair); + run->repair_attempted = true; + repair_start = xchk_stats_now(); error = sc->ops->repair(sc); trace_xrep_done(XFS_I(file_inode(sc->file)), sc->sm, error); + run->repair_ns += xchk_stats_elapsed_ns(repair_start); switch (error) { case 0: /* @@ -59,14 +66,17 @@ xrep_attempt( */ sc->sm->sm_flags &= ~XFS_SCRUB_FLAGS_OUT; sc->flags |= XREP_ALREADY_FIXED; + run->repair_succeeded = true; return -EAGAIN; case -ECHRNG: sc->flags |= XCHK_NEED_DRAIN; + run->retries++; return -EAGAIN; case -EDEADLOCK: /* Tell the caller to try again having grabbed all the locks. */ if (!(sc->flags & XCHK_TRY_HARDER)) { sc->flags |= XCHK_TRY_HARDER; + run->retries++; return -EAGAIN; } /* @@ -166,6 +176,56 @@ xrep_roll_ag_trans( return 0; } +/* Finish all deferred work attached to the repair transaction. */ +int +xrep_defer_finish( + struct xfs_scrub *sc) +{ + int error; + + /* + * Keep the AG header buffers locked while we complete deferred work + * items. Ensure that both AG buffers are dirty and held when we roll + * the transaction so that they move forward in the log without losing + * the bli (and hence the bli type) when the transaction commits. + * + * Normal code would never hold clean buffers across a roll, but repair + * needs both buffers to maintain a total lock on the AG. + */ + if (sc->sa.agi_bp) { + xfs_ialloc_log_agi(sc->tp, sc->sa.agi_bp, XFS_AGI_MAGICNUM); + xfs_trans_bhold(sc->tp, sc->sa.agi_bp); + } + + if (sc->sa.agf_bp) { + xfs_alloc_log_agf(sc->tp, sc->sa.agf_bp, XFS_AGF_MAGICNUM); + xfs_trans_bhold(sc->tp, sc->sa.agf_bp); + } + + /* + * Finish all deferred work items. We still hold the AG header buffers + * locked regardless of whether or not that succeeds. On failure, the + * buffers will be released during teardown on our way out of the + * kernel. If successful, join the buffers to the new transaction + * and move on. + */ + error = xfs_defer_finish(&sc->tp); + if (error) + return error; + + /* + * Release the hold that we set above because defer_finish won't do + * that for us. The defer roll code redirties held buffers after each + * roll, so the AG header buffers should be ready for logging. + */ + if (sc->sa.agi_bp) + xfs_trans_bhold_release(sc->tp, sc->sa.agi_bp); + if (sc->sa.agf_bp) + xfs_trans_bhold_release(sc->tp, sc->sa.agf_bp); + + return 0; +} + /* * Does the given AG have enough space to rebuild a btree? Neither AG * reservation can be critical, and we must have enough space (factoring @@ -297,89 +357,6 @@ xrep_calc_ag_resblks( return max(max(bnobt_sz, inobt_sz), max(rmapbt_sz, refcbt_sz)); } -/* Allocate a block in an AG. */ -int -xrep_alloc_ag_block( - struct xfs_scrub *sc, - const struct xfs_owner_info *oinfo, - xfs_fsblock_t *fsbno, - enum xfs_ag_resv_type resv) -{ - struct xfs_alloc_arg args = {0}; - xfs_agblock_t bno; - int error; - - switch (resv) { - case XFS_AG_RESV_AGFL: - case XFS_AG_RESV_RMAPBT: - error = xfs_alloc_get_freelist(sc->sa.pag, sc->tp, - sc->sa.agf_bp, &bno, 1); - if (error) - return error; - if (bno == NULLAGBLOCK) - return -ENOSPC; - xfs_extent_busy_reuse(sc->mp, sc->sa.pag, bno, 1, false); - *fsbno = XFS_AGB_TO_FSB(sc->mp, sc->sa.pag->pag_agno, bno); - if (resv == XFS_AG_RESV_RMAPBT) - xfs_ag_resv_rmapbt_alloc(sc->mp, sc->sa.pag->pag_agno); - return 0; - default: - break; - } - - args.tp = sc->tp; - args.mp = sc->mp; - args.pag = sc->sa.pag; - args.oinfo = *oinfo; - args.minlen = 1; - args.maxlen = 1; - args.prod = 1; - args.resv = resv; - - error = xfs_alloc_vextent_this_ag(&args, sc->sa.pag->pag_agno); - if (error) - return error; - if (args.fsbno == NULLFSBLOCK) - return -ENOSPC; - ASSERT(args.len == 1); - *fsbno = args.fsbno; - - return 0; -} - -/* Initialize a new AG btree root block with zero entries. */ -int -xrep_init_btblock( - struct xfs_scrub *sc, - xfs_fsblock_t fsb, - struct xfs_buf **bpp, - xfs_btnum_t btnum, - const struct xfs_buf_ops *ops) -{ - struct xfs_trans *tp = sc->tp; - struct xfs_mount *mp = sc->mp; - struct xfs_buf *bp; - int error; - - trace_xrep_init_btblock(mp, XFS_FSB_TO_AGNO(mp, fsb), - XFS_FSB_TO_AGBNO(mp, fsb), btnum); - - ASSERT(XFS_FSB_TO_AGNO(mp, fsb) == sc->sa.pag->pag_agno); - error = xfs_trans_get_buf(tp, mp->m_ddev_targp, - XFS_FSB_TO_DADDR(mp, fsb), XFS_FSB_TO_BB(mp, 1), 0, - &bp); - if (error) - return error; - xfs_buf_zero(bp, 0, BBTOB(bp->b_length)); - xfs_btree_init_block(mp, bp, btnum, 0, 0, sc->sa.pag->pag_agno); - xfs_trans_buf_set_type(tp, bp, XFS_BLFT_BTREE_BUF); - xfs_trans_log_buf(tp, bp, 0, BBTOB(bp->b_length) - 1); - bp->b_ops = ops; - *bpp = bp; - - return 0; -} - /* * Reconstructing per-AG Btrees * @@ -404,91 +381,8 @@ xrep_init_btblock( * sublist. As with the other btrees we subtract sublist from bitmap, and the * result (since the rmapbt lives in the free space) are the blocks from the * old rmapbt. - * - * Disposal of Blocks from Old per-AG Btrees - * - * Now that we've constructed a new btree to replace the damaged one, we want - * to dispose of the blocks that (we think) the old btree was using. - * Previously, we used the rmapbt to collect the extents (bitmap) with the - * rmap owner corresponding to the tree we rebuilt, collected extents for any - * blocks with the same rmap owner that are owned by another data structure - * (sublist), and subtracted sublist from bitmap. In theory the extents - * remaining in bitmap are the old btree's blocks. - * - * Unfortunately, it's possible that the btree was crosslinked with other - * blocks on disk. The rmap data can tell us if there are multiple owners, so - * if the rmapbt says there is an owner of this block other than @oinfo, then - * the block is crosslinked. Remove the reverse mapping and continue. - * - * If there is one rmap record, we can free the block, which removes the - * reverse mapping but doesn't add the block to the free space. Our repair - * strategy is to hope the other metadata objects crosslinked on this block - * will be rebuilt (atop different blocks), thereby removing all the cross - * links. - * - * If there are no rmap records at all, we also free the block. If the btree - * being rebuilt lives in the free space (bnobt/cntbt/rmapbt) then there isn't - * supposed to be a rmap record and everything is ok. For other btrees there - * had to have been an rmap entry for the block to have ended up on @bitmap, - * so if it's gone now there's something wrong and the fs will shut down. - * - * Note: If there are multiple rmap records with only the same rmap owner as - * the btree we're trying to rebuild and the block is indeed owned by another - * data structure with the same rmap owner, then the block will be in sublist - * and therefore doesn't need disposal. If there are multiple rmap records - * with only the same rmap owner but the block is not owned by something with - * the same rmap owner, the block will be freed. - * - * The caller is responsible for locking the AG headers for the entire rebuild - * operation so that nothing else can sneak in and change the AG state while - * we're not looking. We also assume that the caller already invalidated any - * buffers associated with @bitmap. */ -static int -xrep_invalidate_block( - uint64_t fsbno, - void *priv) -{ - struct xfs_scrub *sc = priv; - struct xfs_buf *bp; - int error; - - /* Skip AG headers and post-EOFS blocks */ - if (!xfs_verify_fsbno(sc->mp, fsbno)) - return 0; - - error = xfs_buf_incore(sc->mp->m_ddev_targp, - XFS_FSB_TO_DADDR(sc->mp, fsbno), - XFS_FSB_TO_BB(sc->mp, 1), XBF_TRYLOCK, &bp); - if (error) - return 0; - - xfs_trans_bjoin(sc->tp, bp); - xfs_trans_binval(sc->tp, bp); - return 0; -} - -/* - * Invalidate buffers for per-AG btree blocks we're dumping. This function - * is not intended for use with file data repairs; we have bunmapi for that. - */ -int -xrep_invalidate_blocks( - struct xfs_scrub *sc, - struct xbitmap *bitmap) -{ - /* - * For each block in each extent, see if there's an incore buffer for - * exactly that block; if so, invalidate it. The buffer cache only - * lets us look for one buffer at a time, so we have to look one block - * at a time. Avoid invalidating AG headers and post-EOFS blocks - * because we never own those; and if we can't TRYLOCK the buffer we - * assume it's owned by someone else. - */ - return xbitmap_walk_bits(bitmap, xrep_invalidate_block, sc); -} - /* Ensure the freelist is the correct size. */ int xrep_fix_freelist( @@ -507,155 +401,6 @@ xrep_fix_freelist( can_shrink ? 0 : XFS_ALLOC_FLAG_NOSHRINK); } -/* Information about reaping extents after a repair. */ -struct xrep_reap_state { - struct xfs_scrub *sc; - - /* Reverse mapping owner and metadata reservation type. */ - const struct xfs_owner_info *oinfo; - enum xfs_ag_resv_type resv; -}; - -/* - * Put a block back on the AGFL. - */ -STATIC int -xrep_put_freelist( - struct xfs_scrub *sc, - xfs_agblock_t agbno) -{ - struct xfs_buf *agfl_bp; - int error; - - /* Make sure there's space on the freelist. */ - error = xrep_fix_freelist(sc, true); - if (error) - return error; - - /* - * Since we're "freeing" a lost block onto the AGFL, we have to - * create an rmap for the block prior to merging it or else other - * parts will break. - */ - error = xfs_rmap_alloc(sc->tp, sc->sa.agf_bp, sc->sa.pag, agbno, 1, - &XFS_RMAP_OINFO_AG); - if (error) - return error; - - /* Put the block on the AGFL. */ - error = xfs_alloc_read_agfl(sc->sa.pag, sc->tp, &agfl_bp); - if (error) - return error; - - error = xfs_alloc_put_freelist(sc->sa.pag, sc->tp, sc->sa.agf_bp, - agfl_bp, agbno, 0); - if (error) - return error; - xfs_extent_busy_insert(sc->tp, sc->sa.pag, agbno, 1, - XFS_EXTENT_BUSY_SKIP_DISCARD); - - return 0; -} - -/* Dispose of a single block. */ -STATIC int -xrep_reap_block( - uint64_t fsbno, - void *priv) -{ - struct xrep_reap_state *rs = priv; - struct xfs_scrub *sc = rs->sc; - struct xfs_btree_cur *cur; - struct xfs_buf *agf_bp = NULL; - xfs_agblock_t agbno; - bool has_other_rmap; - int error; - - ASSERT(sc->ip != NULL || - XFS_FSB_TO_AGNO(sc->mp, fsbno) == sc->sa.pag->pag_agno); - trace_xrep_dispose_btree_extent(sc->mp, - XFS_FSB_TO_AGNO(sc->mp, fsbno), - XFS_FSB_TO_AGBNO(sc->mp, fsbno), 1); - - agbno = XFS_FSB_TO_AGBNO(sc->mp, fsbno); - ASSERT(XFS_FSB_TO_AGNO(sc->mp, fsbno) == sc->sa.pag->pag_agno); - - /* - * If we are repairing per-inode metadata, we need to read in the AGF - * buffer. Otherwise, we're repairing a per-AG structure, so reuse - * the AGF buffer that the setup functions already grabbed. - */ - if (sc->ip) { - error = xfs_alloc_read_agf(sc->sa.pag, sc->tp, 0, &agf_bp); - if (error) - return error; - } else { - agf_bp = sc->sa.agf_bp; - } - cur = xfs_rmapbt_init_cursor(sc->mp, sc->tp, agf_bp, sc->sa.pag); - - /* Can we find any other rmappings? */ - error = xfs_rmap_has_other_keys(cur, agbno, 1, rs->oinfo, - &has_other_rmap); - xfs_btree_del_cursor(cur, error); - if (error) - goto out_free; - - /* - * If there are other rmappings, this block is cross linked and must - * not be freed. Remove the reverse mapping and move on. Otherwise, - * we were the only owner of the block, so free the extent, which will - * also remove the rmap. - * - * XXX: XFS doesn't support detecting the case where a single block - * metadata structure is crosslinked with a multi-block structure - * because the buffer cache doesn't detect aliasing problems, so we - * can't fix 100% of crosslinking problems (yet). The verifiers will - * blow on writeout, the filesystem will shut down, and the admin gets - * to run xfs_repair. - */ - if (has_other_rmap) - error = xfs_rmap_free(sc->tp, agf_bp, sc->sa.pag, agbno, - 1, rs->oinfo); - else if (rs->resv == XFS_AG_RESV_AGFL) - error = xrep_put_freelist(sc, agbno); - else - error = xfs_free_extent(sc->tp, sc->sa.pag, agbno, 1, rs->oinfo, - rs->resv); - if (agf_bp != sc->sa.agf_bp) - xfs_trans_brelse(sc->tp, agf_bp); - if (error) - return error; - - if (sc->ip) - return xfs_trans_roll_inode(&sc->tp, sc->ip); - return xrep_roll_ag_trans(sc); - -out_free: - if (agf_bp != sc->sa.agf_bp) - xfs_trans_brelse(sc->tp, agf_bp); - return error; -} - -/* Dispose of every block of every extent in the bitmap. */ -int -xrep_reap_extents( - struct xfs_scrub *sc, - struct xbitmap *bitmap, - const struct xfs_owner_info *oinfo, - enum xfs_ag_resv_type type) -{ - struct xrep_reap_state rs = { - .sc = sc, - .oinfo = oinfo, - .resv = type, - }; - - ASSERT(xfs_has_rmapbt(sc->mp)); - - return xbitmap_walk_bits(bitmap, xrep_reap_block, &rs); -} - /* * Finding per-AG Btree Roots for AGF/AGI Reconstruction * diff --git a/fs/xfs/scrub/repair.h b/fs/xfs/scrub/repair.h index dce791c679ee..60d2a9ae5f2e 100644 --- a/fs/xfs/scrub/repair.h +++ b/fs/xfs/scrub/repair.h @@ -8,6 +8,8 @@ #include "xfs_quota_defs.h" +struct xchk_stats_run; + static inline int xrep_notsupported(struct xfs_scrub *sc) { return -EOPNOTSUPP; @@ -15,28 +17,28 @@ static inline int xrep_notsupported(struct xfs_scrub *sc) #ifdef CONFIG_XFS_ONLINE_REPAIR +/* + * This is the maximum number of deferred extent freeing item extents (EFIs) + * that we'll attach to a transaction without rolling the transaction to avoid + * overrunning a tr_itruncate reservation. + */ +#define XREP_MAX_ITRUNCATE_EFIS (128) + + /* Repair helpers */ -int xrep_attempt(struct xfs_scrub *sc); +int xrep_attempt(struct xfs_scrub *sc, struct xchk_stats_run *run); void xrep_failure(struct xfs_mount *mp); int xrep_roll_ag_trans(struct xfs_scrub *sc); +int xrep_defer_finish(struct xfs_scrub *sc); bool xrep_ag_has_space(struct xfs_perag *pag, xfs_extlen_t nr_blocks, enum xfs_ag_resv_type type); xfs_extlen_t xrep_calc_ag_resblks(struct xfs_scrub *sc); -int xrep_alloc_ag_block(struct xfs_scrub *sc, - const struct xfs_owner_info *oinfo, xfs_fsblock_t *fsbno, - enum xfs_ag_resv_type resv); -int xrep_init_btblock(struct xfs_scrub *sc, xfs_fsblock_t fsb, - struct xfs_buf **bpp, xfs_btnum_t btnum, - const struct xfs_buf_ops *ops); struct xbitmap; struct xagb_bitmap; int xrep_fix_freelist(struct xfs_scrub *sc, bool can_shrink); -int xrep_invalidate_blocks(struct xfs_scrub *sc, struct xbitmap *btlist); -int xrep_reap_extents(struct xfs_scrub *sc, struct xbitmap *exlist, - const struct xfs_owner_info *oinfo, enum xfs_ag_resv_type type); struct xrep_find_ag_btree { /* in: rmap owner of the btree we're looking for */ @@ -70,7 +72,8 @@ int xrep_agi(struct xfs_scrub *sc); static inline int xrep_attempt( - struct xfs_scrub *sc) + struct xfs_scrub *sc, + struct xchk_stats_run *run) { return -EOPNOTSUPP; } diff --git a/fs/xfs/scrub/rtbitmap.c b/fs/xfs/scrub/rtbitmap.c index e7dace7b4be8..008ddb599e13 100644 --- a/fs/xfs/scrub/rtbitmap.c +++ b/fs/xfs/scrub/rtbitmap.c @@ -19,19 +19,20 @@ /* Set us up with the realtime metadata locked. */ int -xchk_setup_rt( +xchk_setup_rtbitmap( struct xfs_scrub *sc) { int error; - error = xchk_setup_fs(sc); + error = xchk_trans_alloc(sc, 0); if (error) return error; - sc->ilock_flags = XFS_ILOCK_EXCL | XFS_ILOCK_RTBITMAP; - sc->ip = sc->mp->m_rbmip; - xfs_ilock(sc->ip, sc->ilock_flags); + error = xchk_install_live_inode(sc, sc->mp->m_rbmip); + if (error) + return error; + xchk_ilock(sc, XFS_ILOCK_EXCL | XFS_ILOCK_RTBITMAP); return 0; } @@ -123,43 +124,6 @@ out: return error; } -/* Scrub the realtime summary. */ -int -xchk_rtsummary( - struct xfs_scrub *sc) -{ - struct xfs_inode *rsumip = sc->mp->m_rsumip; - struct xfs_inode *old_ip = sc->ip; - uint old_ilock_flags = sc->ilock_flags; - int error = 0; - - /* - * We ILOCK'd the rt bitmap ip in the setup routine, now lock the - * rt summary ip in compliance with the rt inode locking rules. - * - * Since we switch sc->ip to rsumip we have to save the old ilock - * flags so that we don't mix up the inode state that @sc tracks. - */ - sc->ip = rsumip; - sc->ilock_flags = XFS_ILOCK_EXCL | XFS_ILOCK_RTSUM; - xfs_ilock(sc->ip, sc->ilock_flags); - - /* Invoke the fork scrubber. */ - error = xchk_metadata_inode_forks(sc); - if (error || (sc->sm->sm_flags & XFS_SCRUB_OFLAG_CORRUPT)) - goto out; - - /* XXX: implement this some day */ - xchk_set_incomplete(sc); -out: - /* Switch back to the rtbitmap inode and lock flags. */ - xfs_iunlock(sc->ip, sc->ilock_flags); - sc->ilock_flags = old_ilock_flags; - sc->ip = old_ip; - return error; -} - - /* xref check that the extent is not free in the rtbitmap */ void xchk_xref_is_used_rt_space( diff --git a/fs/xfs/scrub/rtsummary.c b/fs/xfs/scrub/rtsummary.c new file mode 100644 index 000000000000..437ed9acbb27 --- /dev/null +++ b/fs/xfs/scrub/rtsummary.c @@ -0,0 +1,264 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Copyright (C) 2017-2023 Oracle. All Rights Reserved. + * Author: Darrick J. Wong <djwong@kernel.org> + */ +#include "xfs.h" +#include "xfs_fs.h" +#include "xfs_shared.h" +#include "xfs_format.h" +#include "xfs_trans_resv.h" +#include "xfs_mount.h" +#include "xfs_btree.h" +#include "xfs_inode.h" +#include "xfs_log_format.h" +#include "xfs_trans.h" +#include "xfs_rtalloc.h" +#include "xfs_bit.h" +#include "xfs_bmap.h" +#include "scrub/scrub.h" +#include "scrub/common.h" +#include "scrub/trace.h" +#include "scrub/xfile.h" + +/* + * Realtime Summary + * ================ + * + * We check the realtime summary by scanning the realtime bitmap file to create + * a new summary file incore, and then we compare the computed version against + * the ondisk version. We use the 'xfile' functionality to store this + * (potentially large) amount of data in pageable memory. + */ + +/* Set us up to check the rtsummary file. */ +int +xchk_setup_rtsummary( + struct xfs_scrub *sc) +{ + struct xfs_mount *mp = sc->mp; + char *descr; + int error; + + /* + * Create an xfile to construct a new rtsummary file. The xfile allows + * us to avoid pinning kernel memory for this purpose. + */ + descr = xchk_xfile_descr(sc, "realtime summary file"); + error = xfile_create(descr, mp->m_rsumsize, &sc->xfile); + kfree(descr); + if (error) + return error; + + error = xchk_trans_alloc(sc, 0); + if (error) + return error; + + /* Allocate a memory buffer for the summary comparison. */ + sc->buf = kvmalloc(mp->m_sb.sb_blocksize, XCHK_GFP_FLAGS); + if (!sc->buf) + return -ENOMEM; + + error = xchk_install_live_inode(sc, mp->m_rsumip); + if (error) + return error; + + /* + * Locking order requires us to take the rtbitmap first. We must be + * careful to unlock it ourselves when we are done with the rtbitmap + * file since the scrub infrastructure won't do that for us. Only + * then we can lock the rtsummary inode. + */ + xfs_ilock(mp->m_rbmip, XFS_ILOCK_SHARED | XFS_ILOCK_RTBITMAP); + xchk_ilock(sc, XFS_ILOCK_EXCL | XFS_ILOCK_RTSUM); + return 0; +} + +/* Helper functions to record suminfo words in an xfile. */ + +typedef unsigned int xchk_rtsumoff_t; + +static inline int +xfsum_load( + struct xfs_scrub *sc, + xchk_rtsumoff_t sumoff, + xfs_suminfo_t *info) +{ + return xfile_obj_load(sc->xfile, info, sizeof(xfs_suminfo_t), + sumoff << XFS_WORDLOG); +} + +static inline int +xfsum_store( + struct xfs_scrub *sc, + xchk_rtsumoff_t sumoff, + const xfs_suminfo_t info) +{ + return xfile_obj_store(sc->xfile, &info, sizeof(xfs_suminfo_t), + sumoff << XFS_WORDLOG); +} + +static inline int +xfsum_copyout( + struct xfs_scrub *sc, + xchk_rtsumoff_t sumoff, + xfs_suminfo_t *info, + unsigned int nr_words) +{ + return xfile_obj_load(sc->xfile, info, nr_words << XFS_WORDLOG, + sumoff << XFS_WORDLOG); +} + +/* Update the summary file to reflect the free extent that we've accumulated. */ +STATIC int +xchk_rtsum_record_free( + struct xfs_mount *mp, + struct xfs_trans *tp, + const struct xfs_rtalloc_rec *rec, + void *priv) +{ + struct xfs_scrub *sc = priv; + xfs_fileoff_t rbmoff; + xfs_rtblock_t rtbno; + xfs_filblks_t rtlen; + xchk_rtsumoff_t offs; + unsigned int lenlog; + xfs_suminfo_t v = 0; + int error = 0; + + if (xchk_should_terminate(sc, &error)) + return error; + + /* Compute the relevant location in the rtsum file. */ + rbmoff = XFS_BITTOBLOCK(mp, rec->ar_startext); + lenlog = XFS_RTBLOCKLOG(rec->ar_extcount); + offs = XFS_SUMOFFS(mp, lenlog, rbmoff); + + rtbno = rec->ar_startext * mp->m_sb.sb_rextsize; + rtlen = rec->ar_extcount * mp->m_sb.sb_rextsize; + + if (!xfs_verify_rtext(mp, rtbno, rtlen)) { + xchk_ino_xref_set_corrupt(sc, mp->m_rbmip->i_ino); + return -EFSCORRUPTED; + } + + /* Bump the summary count. */ + error = xfsum_load(sc, offs, &v); + if (error) + return error; + + v++; + trace_xchk_rtsum_record_free(mp, rec->ar_startext, rec->ar_extcount, + lenlog, offs, v); + + return xfsum_store(sc, offs, v); +} + +/* Compute the realtime summary from the realtime bitmap. */ +STATIC int +xchk_rtsum_compute( + struct xfs_scrub *sc) +{ + struct xfs_mount *mp = sc->mp; + unsigned long long rtbmp_bytes; + + /* If the bitmap size doesn't match the computed size, bail. */ + rtbmp_bytes = howmany_64(mp->m_sb.sb_rextents, NBBY); + if (roundup_64(rtbmp_bytes, mp->m_sb.sb_blocksize) != + mp->m_rbmip->i_disk_size) + return -EFSCORRUPTED; + + return xfs_rtalloc_query_all(sc->mp, sc->tp, xchk_rtsum_record_free, + sc); +} + +/* Compare the rtsummary file against the one we computed. */ +STATIC int +xchk_rtsum_compare( + struct xfs_scrub *sc) +{ + struct xfs_mount *mp = sc->mp; + struct xfs_buf *bp; + struct xfs_bmbt_irec map; + xfs_fileoff_t off; + xchk_rtsumoff_t sumoff = 0; + int nmap; + + for (off = 0; off < XFS_B_TO_FSB(mp, mp->m_rsumsize); off++) { + int error = 0; + + if (xchk_should_terminate(sc, &error)) + return error; + if (sc->sm->sm_flags & XFS_SCRUB_OFLAG_CORRUPT) + return 0; + + /* Make sure we have a written extent. */ + nmap = 1; + error = xfs_bmapi_read(mp->m_rsumip, off, 1, &map, &nmap, + XFS_DATA_FORK); + if (!xchk_fblock_process_error(sc, XFS_DATA_FORK, off, &error)) + return error; + + if (nmap != 1 || !xfs_bmap_is_written_extent(&map)) { + xchk_fblock_set_corrupt(sc, XFS_DATA_FORK, off); + return 0; + } + + /* Read a block's worth of ondisk rtsummary file. */ + error = xfs_rtbuf_get(mp, sc->tp, off, 1, &bp); + if (!xchk_fblock_process_error(sc, XFS_DATA_FORK, off, &error)) + return error; + + /* Read a block's worth of computed rtsummary file. */ + error = xfsum_copyout(sc, sumoff, sc->buf, mp->m_blockwsize); + if (error) { + xfs_trans_brelse(sc->tp, bp); + return error; + } + + if (memcmp(bp->b_addr, sc->buf, + mp->m_blockwsize << XFS_WORDLOG) != 0) + xchk_fblock_set_corrupt(sc, XFS_DATA_FORK, off); + + xfs_trans_brelse(sc->tp, bp); + sumoff += mp->m_blockwsize; + } + + return 0; +} + +/* Scrub the realtime summary. */ +int +xchk_rtsummary( + struct xfs_scrub *sc) +{ + struct xfs_mount *mp = sc->mp; + int error = 0; + + /* Invoke the fork scrubber. */ + error = xchk_metadata_inode_forks(sc); + if (error || (sc->sm->sm_flags & XFS_SCRUB_OFLAG_CORRUPT)) + goto out_rbm; + + /* Construct the new summary file from the rtbitmap. */ + error = xchk_rtsum_compute(sc); + if (error == -EFSCORRUPTED) { + /* + * EFSCORRUPTED means the rtbitmap is corrupt, which is an xref + * error since we're checking the summary file. + */ + xchk_ino_xref_set_corrupt(sc, mp->m_rbmip->i_ino); + error = 0; + goto out_rbm; + } + if (error) + goto out_rbm; + + /* Does the computed summary file match the actual rtsummary file? */ + error = xchk_rtsum_compare(sc); + +out_rbm: + /* Unlock the rtbitmap since we're done with it. */ + xfs_iunlock(mp->m_rbmip, XFS_ILOCK_SHARED | XFS_ILOCK_RTBITMAP); + return error; +} diff --git a/fs/xfs/scrub/scrub.c b/fs/xfs/scrub/scrub.c index 3d98f604765e..7d3aa14d81b5 100644 --- a/fs/xfs/scrub/scrub.c +++ b/fs/xfs/scrub/scrub.c @@ -22,6 +22,8 @@ #include "scrub/trace.h" #include "scrub/repair.h" #include "scrub/health.h" +#include "scrub/stats.h" +#include "scrub/xfile.h" /* * Online Scrub and Repair @@ -166,8 +168,6 @@ xchk_teardown( struct xfs_scrub *sc, int error) { - struct xfs_inode *ip_in = XFS_I(file_inode(sc->file)); - xchk_ag_free(sc, &sc->sa); if (sc->tp) { if (error == 0 && (sc->sm->sm_flags & XFS_SCRUB_IFLAG_REPAIR)) @@ -178,14 +178,18 @@ xchk_teardown( } if (sc->ip) { if (sc->ilock_flags) - xfs_iunlock(sc->ip, sc->ilock_flags); - if (sc->ip != ip_in && - !xfs_internal_inum(sc->mp, sc->ip->i_ino)) - xchk_irele(sc, sc->ip); + xchk_iunlock(sc, sc->ilock_flags); + xchk_irele(sc, sc->ip); sc->ip = NULL; } - if (sc->sm->sm_flags & XFS_SCRUB_IFLAG_REPAIR) + if (sc->flags & XCHK_HAVE_FREEZE_PROT) { + sc->flags &= ~XCHK_HAVE_FREEZE_PROT; mnt_drop_write_file(sc->file); + } + if (sc->xfile) { + xfile_destroy(sc->xfile); + sc->xfile = NULL; + } if (sc->buf) { if (sc->buf_cleanup) sc->buf_cleanup(sc->buf); @@ -320,14 +324,14 @@ static const struct xchk_meta_ops meta_scrub_ops[] = { }, [XFS_SCRUB_TYPE_RTBITMAP] = { /* realtime bitmap */ .type = ST_FS, - .setup = xchk_setup_rt, + .setup = xchk_setup_rtbitmap, .scrub = xchk_rtbitmap, .has = xfs_has_realtime, .repair = xrep_notsupported, }, [XFS_SCRUB_TYPE_RTSUM] = { /* realtime summary */ .type = ST_FS, - .setup = xchk_setup_rt, + .setup = xchk_setup_rtsummary, .scrub = xchk_rtsummary, .has = xfs_has_realtime, .repair = xrep_notsupported, @@ -407,6 +411,11 @@ xchk_validate_inputs( goto out; } + /* No rebuild without repair. */ + if ((sm->sm_flags & XFS_SCRUB_IFLAG_FORCE_REBUILD) && + !(sm->sm_flags & XFS_SCRUB_IFLAG_REPAIR)) + return -EINVAL; + /* * We only want to repair read-write v5+ filesystems. Defer the check * for ops->repair until after our scrub confirms that we need to @@ -461,8 +470,10 @@ xfs_scrub_metadata( struct file *file, struct xfs_scrub_metadata *sm) { + struct xchk_stats_run run = { }; struct xfs_scrub *sc; struct xfs_mount *mp = XFS_I(file_inode(file))->i_mount; + u64 check_start; int error = 0; BUILD_BUG_ON(sizeof(meta_scrub_ops) != @@ -505,6 +516,8 @@ retry_op: error = mnt_want_write_file(sc->file); if (error) goto out_sc; + + sc->flags |= XCHK_HAVE_FREEZE_PROT; } /* Set up for the operation. */ @@ -517,7 +530,9 @@ retry_op: goto out_teardown; /* Scrub for errors. */ + check_start = xchk_stats_now(); error = sc->ops->scrub(sc); + run.scrub_ns += xchk_stats_elapsed_ns(check_start); if (error == -EDEADLOCK && !(sc->flags & XCHK_TRY_HARDER)) goto try_harder; if (error == -ECHRNG && !(sc->flags & XCHK_NEED_DRAIN)) @@ -529,15 +544,16 @@ retry_op: if ((sc->sm->sm_flags & XFS_SCRUB_IFLAG_REPAIR) && !(sc->flags & XREP_ALREADY_FIXED)) { - bool needs_fix; + bool needs_fix = xchk_needs_repair(sc->sm); + + /* Userspace asked us to rebuild the structure regardless. */ + if (sc->sm->sm_flags & XFS_SCRUB_IFLAG_FORCE_REBUILD) + needs_fix = true; /* Let debug users force us into the repair routines. */ - if (XFS_TEST_ERROR(false, mp, XFS_ERRTAG_FORCE_SCRUB_REPAIR)) - sc->sm->sm_flags |= XFS_SCRUB_OFLAG_CORRUPT; + if (XFS_TEST_ERROR(needs_fix, mp, XFS_ERRTAG_FORCE_SCRUB_REPAIR)) + needs_fix = true; - needs_fix = (sc->sm->sm_flags & (XFS_SCRUB_OFLAG_CORRUPT | - XFS_SCRUB_OFLAG_XCORRUPT | - XFS_SCRUB_OFLAG_PREEN)); /* * If userspace asked for a repair but it wasn't necessary, * report that back to userspace. @@ -551,7 +567,7 @@ retry_op: * If it's broken, userspace wants us to fix it, and we haven't * already tried to fix it, then attempt a repair. */ - error = xrep_attempt(sc); + error = xrep_attempt(sc, &run); if (error == -EAGAIN) { /* * Either the repair function succeeded or it couldn't @@ -579,12 +595,15 @@ out: sm->sm_flags |= XFS_SCRUB_OFLAG_CORRUPT; error = 0; } + if (error != -ENOENT) + xchk_stats_merge(mp, sm, &run); return error; need_drain: error = xchk_teardown(sc, 0); if (error) goto out_sc; sc->flags |= XCHK_NEED_DRAIN; + run.retries++; goto retry_op; try_harder: /* @@ -596,5 +615,6 @@ try_harder: if (error) goto out_sc; sc->flags |= XCHK_TRY_HARDER; + run.retries++; goto retry_op; } diff --git a/fs/xfs/scrub/scrub.h b/fs/xfs/scrub/scrub.h index e113f2f5c254..1ef9c6b4842a 100644 --- a/fs/xfs/scrub/scrub.h +++ b/fs/xfs/scrub/scrub.h @@ -88,6 +88,10 @@ struct xfs_scrub { */ void (*buf_cleanup)(void *buf); + /* xfile used by the scrubbers; freed at teardown. */ + struct xfile *xfile; + + /* Lock flags for @ip. */ uint ilock_flags; /* See the XCHK/XREP state flags below. */ @@ -106,6 +110,7 @@ struct xfs_scrub { /* XCHK state flags grow up from zero, XREP state flags grown down from 2^31 */ #define XCHK_TRY_HARDER (1U << 0) /* can't get resources, try again */ +#define XCHK_HAVE_FREEZE_PROT (1U << 1) /* do we have freeze protection? */ #define XCHK_FSGATES_DRAIN (1U << 2) /* defer ops draining enabled */ #define XCHK_NEED_DRAIN (1U << 3) /* scrub needs to drain defer ops */ #define XREP_ALREADY_FIXED (1U << 31) /* checking our repair work */ diff --git a/fs/xfs/scrub/stats.c b/fs/xfs/scrub/stats.c new file mode 100644 index 000000000000..aeb92624176b --- /dev/null +++ b/fs/xfs/scrub/stats.c @@ -0,0 +1,405 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Copyright (C) 2023 Oracle. All Rights Reserved. + * Author: Darrick J. Wong <djwong@kernel.org> + */ +#include "xfs.h" +#include "xfs_fs.h" +#include "xfs_shared.h" +#include "xfs_format.h" +#include "xfs_trans_resv.h" +#include "xfs_mount.h" +#include "xfs_sysfs.h" +#include "xfs_btree.h" +#include "xfs_super.h" +#include "scrub/scrub.h" +#include "scrub/stats.h" +#include "scrub/trace.h" + +struct xchk_scrub_stats { + /* all 32-bit counters here */ + + /* checking stats */ + uint32_t invocations; + uint32_t clean; + uint32_t corrupt; + uint32_t preen; + uint32_t xfail; + uint32_t xcorrupt; + uint32_t incomplete; + uint32_t warning; + uint32_t retries; + + /* repair stats */ + uint32_t repair_invocations; + uint32_t repair_success; + + /* all 64-bit items here */ + + /* runtimes */ + uint64_t checktime_us; + uint64_t repairtime_us; + + /* non-counter state must go at the end for clearall */ + spinlock_t css_lock; +}; + +struct xchk_stats { + struct dentry *cs_debugfs; + struct xchk_scrub_stats cs_stats[XFS_SCRUB_TYPE_NR]; +}; + + +static struct xchk_stats global_stats; + +static const char *name_map[XFS_SCRUB_TYPE_NR] = { + [XFS_SCRUB_TYPE_SB] = "sb", + [XFS_SCRUB_TYPE_AGF] = "agf", + [XFS_SCRUB_TYPE_AGFL] = "agfl", + [XFS_SCRUB_TYPE_AGI] = "agi", + [XFS_SCRUB_TYPE_BNOBT] = "bnobt", + [XFS_SCRUB_TYPE_CNTBT] = "cntbt", + [XFS_SCRUB_TYPE_INOBT] = "inobt", + [XFS_SCRUB_TYPE_FINOBT] = "finobt", + [XFS_SCRUB_TYPE_RMAPBT] = "rmapbt", + [XFS_SCRUB_TYPE_REFCNTBT] = "refcountbt", + [XFS_SCRUB_TYPE_INODE] = "inode", + [XFS_SCRUB_TYPE_BMBTD] = "bmapbtd", + [XFS_SCRUB_TYPE_BMBTA] = "bmapbta", + [XFS_SCRUB_TYPE_BMBTC] = "bmapbtc", + [XFS_SCRUB_TYPE_DIR] = "directory", + [XFS_SCRUB_TYPE_XATTR] = "xattr", + [XFS_SCRUB_TYPE_SYMLINK] = "symlink", + [XFS_SCRUB_TYPE_PARENT] = "parent", + [XFS_SCRUB_TYPE_RTBITMAP] = "rtbitmap", + [XFS_SCRUB_TYPE_RTSUM] = "rtsummary", + [XFS_SCRUB_TYPE_UQUOTA] = "usrquota", + [XFS_SCRUB_TYPE_GQUOTA] = "grpquota", + [XFS_SCRUB_TYPE_PQUOTA] = "prjquota", + [XFS_SCRUB_TYPE_FSCOUNTERS] = "fscounters", +}; + +/* Format the scrub stats into a text buffer, similar to pcp style. */ +STATIC ssize_t +xchk_stats_format( + struct xchk_stats *cs, + char *buf, + size_t remaining) +{ + struct xchk_scrub_stats *css = &cs->cs_stats[0]; + unsigned int i; + ssize_t copied = 0; + int ret = 0; + + for (i = 0; i < XFS_SCRUB_TYPE_NR; i++, css++) { + if (!name_map[i]) + continue; + + ret = scnprintf(buf, remaining, + "%s %u %u %u %u %u %u %u %u %u %llu %u %u %llu\n", + name_map[i], + (unsigned int)css->invocations, + (unsigned int)css->clean, + (unsigned int)css->corrupt, + (unsigned int)css->preen, + (unsigned int)css->xfail, + (unsigned int)css->xcorrupt, + (unsigned int)css->incomplete, + (unsigned int)css->warning, + (unsigned int)css->retries, + (unsigned long long)css->checktime_us, + (unsigned int)css->repair_invocations, + (unsigned int)css->repair_success, + (unsigned long long)css->repairtime_us); + if (ret <= 0) + break; + + remaining -= ret; + copied += ret; + buf += ret; + } + + return copied > 0 ? copied : ret; +} + +/* Estimate the worst case buffer size required to hold the whole report. */ +STATIC size_t +xchk_stats_estimate_bufsize( + struct xchk_stats *cs) +{ + struct xchk_scrub_stats *css = &cs->cs_stats[0]; + unsigned int i; + size_t field_width; + size_t ret = 0; + + /* 4294967296 plus one space for each u32 field */ + field_width = 11 * (offsetof(struct xchk_scrub_stats, checktime_us) / + sizeof(uint32_t)); + + /* 18446744073709551615 plus one space for each u64 field */ + field_width += 21 * ((offsetof(struct xchk_scrub_stats, css_lock) - + offsetof(struct xchk_scrub_stats, checktime_us)) / + sizeof(uint64_t)); + + for (i = 0; i < XFS_SCRUB_TYPE_NR; i++, css++) { + if (!name_map[i]) + continue; + + /* name plus one space */ + ret += 1 + strlen(name_map[i]); + + /* all fields, plus newline */ + ret += field_width + 1; + } + + return ret; +} + +/* Clear all counters. */ +STATIC void +xchk_stats_clearall( + struct xchk_stats *cs) +{ + struct xchk_scrub_stats *css = &cs->cs_stats[0]; + unsigned int i; + + for (i = 0; i < XFS_SCRUB_TYPE_NR; i++, css++) { + spin_lock(&css->css_lock); + memset(css, 0, offsetof(struct xchk_scrub_stats, css_lock)); + spin_unlock(&css->css_lock); + } +} + +#define XFS_SCRUB_OFLAG_UNCLEAN (XFS_SCRUB_OFLAG_CORRUPT | \ + XFS_SCRUB_OFLAG_PREEN | \ + XFS_SCRUB_OFLAG_XFAIL | \ + XFS_SCRUB_OFLAG_XCORRUPT | \ + XFS_SCRUB_OFLAG_INCOMPLETE | \ + XFS_SCRUB_OFLAG_WARNING) + +STATIC void +xchk_stats_merge_one( + struct xchk_stats *cs, + const struct xfs_scrub_metadata *sm, + const struct xchk_stats_run *run) +{ + struct xchk_scrub_stats *css; + + ASSERT(sm->sm_type < XFS_SCRUB_TYPE_NR); + + css = &cs->cs_stats[sm->sm_type]; + spin_lock(&css->css_lock); + css->invocations++; + if (!(sm->sm_flags & XFS_SCRUB_OFLAG_UNCLEAN)) + css->clean++; + if (sm->sm_flags & XFS_SCRUB_OFLAG_CORRUPT) + css->corrupt++; + if (sm->sm_flags & XFS_SCRUB_OFLAG_PREEN) + css->preen++; + if (sm->sm_flags & XFS_SCRUB_OFLAG_XFAIL) + css->xfail++; + if (sm->sm_flags & XFS_SCRUB_OFLAG_XCORRUPT) + css->xcorrupt++; + if (sm->sm_flags & XFS_SCRUB_OFLAG_INCOMPLETE) + css->incomplete++; + if (sm->sm_flags & XFS_SCRUB_OFLAG_WARNING) + css->warning++; + css->retries += run->retries; + css->checktime_us += howmany_64(run->scrub_ns, NSEC_PER_USEC); + + if (run->repair_attempted) + css->repair_invocations++; + if (run->repair_succeeded) + css->repair_success++; + css->repairtime_us += howmany_64(run->repair_ns, NSEC_PER_USEC); + spin_unlock(&css->css_lock); +} + +/* Merge these scrub-run stats into the global and mount stat data. */ +void +xchk_stats_merge( + struct xfs_mount *mp, + const struct xfs_scrub_metadata *sm, + const struct xchk_stats_run *run) +{ + xchk_stats_merge_one(&global_stats, sm, run); + xchk_stats_merge_one(mp->m_scrub_stats, sm, run); +} + +/* debugfs boilerplate */ + +static ssize_t +xchk_scrub_stats_read( + struct file *file, + char __user *ubuf, + size_t count, + loff_t *ppos) +{ + struct xchk_stats *cs = file->private_data; + char *buf; + size_t bufsize; + ssize_t avail, ret; + + /* + * This generates stringly snapshot of all the scrub counters, so we + * do not want userspace to receive garbled text from multiple calls. + * If the file position is greater than 0, return a short read. + */ + if (*ppos > 0) + return 0; + + bufsize = xchk_stats_estimate_bufsize(cs); + + buf = kvmalloc(bufsize, XCHK_GFP_FLAGS); + if (!buf) + return -ENOMEM; + + avail = xchk_stats_format(cs, buf, bufsize); + if (avail < 0) { + ret = avail; + goto out; + } + + ret = simple_read_from_buffer(ubuf, count, ppos, buf, avail); +out: + kvfree(buf); + return ret; +} + +static const struct file_operations scrub_stats_fops = { + .open = simple_open, + .read = xchk_scrub_stats_read, +}; + +static ssize_t +xchk_clear_scrub_stats_write( + struct file *file, + const char __user *ubuf, + size_t count, + loff_t *ppos) +{ + struct xchk_stats *cs = file->private_data; + unsigned int val; + int ret; + + ret = kstrtouint_from_user(ubuf, count, 0, &val); + if (ret) + return ret; + + if (val != 1) + return -EINVAL; + + xchk_stats_clearall(cs); + return count; +} + +static const struct file_operations clear_scrub_stats_fops = { + .open = simple_open, + .write = xchk_clear_scrub_stats_write, +}; + +/* Initialize the stats object. */ +STATIC int +xchk_stats_init( + struct xchk_stats *cs, + struct xfs_mount *mp) +{ + struct xchk_scrub_stats *css = &cs->cs_stats[0]; + unsigned int i; + + for (i = 0; i < XFS_SCRUB_TYPE_NR; i++, css++) + spin_lock_init(&css->css_lock); + + return 0; +} + +/* Connect the stats object to debugfs. */ +void +xchk_stats_register( + struct xchk_stats *cs, + struct dentry *parent) +{ + if (!parent) + return; + + cs->cs_debugfs = xfs_debugfs_mkdir("scrub", parent); + if (!cs->cs_debugfs) + return; + + debugfs_create_file("stats", 0644, cs->cs_debugfs, cs, + &scrub_stats_fops); + debugfs_create_file("clear_stats", 0400, cs->cs_debugfs, cs, + &clear_scrub_stats_fops); +} + +/* Free all resources related to the stats object. */ +STATIC int +xchk_stats_teardown( + struct xchk_stats *cs) +{ + return 0; +} + +/* Disconnect the stats object from debugfs. */ +void +xchk_stats_unregister( + struct xchk_stats *cs) +{ + debugfs_remove(cs->cs_debugfs); +} + +/* Initialize global stats and register them */ +int __init +xchk_global_stats_setup( + struct dentry *parent) +{ + int error; + + error = xchk_stats_init(&global_stats, NULL); + if (error) + return error; + + xchk_stats_register(&global_stats, parent); + return 0; +} + +/* Unregister global stats and tear them down */ +void +xchk_global_stats_teardown(void) +{ + xchk_stats_unregister(&global_stats); + xchk_stats_teardown(&global_stats); +} + +/* Allocate per-mount stats */ +int +xchk_mount_stats_alloc( + struct xfs_mount *mp) +{ + struct xchk_stats *cs; + int error; + + cs = kvzalloc(sizeof(struct xchk_stats), GFP_KERNEL); + if (!cs) + return -ENOMEM; + + error = xchk_stats_init(cs, mp); + if (error) + goto out_free; + + mp->m_scrub_stats = cs; + return 0; +out_free: + kvfree(cs); + return error; +} + +/* Free per-mount stats */ +void +xchk_mount_stats_free( + struct xfs_mount *mp) +{ + xchk_stats_teardown(mp->m_scrub_stats); + kvfree(mp->m_scrub_stats); + mp->m_scrub_stats = NULL; +} diff --git a/fs/xfs/scrub/stats.h b/fs/xfs/scrub/stats.h new file mode 100644 index 000000000000..b358ad8d8b90 --- /dev/null +++ b/fs/xfs/scrub/stats.h @@ -0,0 +1,59 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Copyright (C) 2023 Oracle. All Rights Reserved. + * Author: Darrick J. Wong <djwong@kernel.org> + */ +#ifndef __XFS_SCRUB_STATS_H__ +#define __XFS_SCRUB_STATS_H__ + +struct xchk_stats_run { + u64 scrub_ns; + u64 repair_ns; + unsigned int retries; + bool repair_attempted; + bool repair_succeeded; +}; + +#ifdef CONFIG_XFS_ONLINE_SCRUB_STATS +struct xchk_stats; + +int __init xchk_global_stats_setup(struct dentry *parent); +void xchk_global_stats_teardown(void); + +int xchk_mount_stats_alloc(struct xfs_mount *mp); +void xchk_mount_stats_free(struct xfs_mount *mp); + +void xchk_stats_register(struct xchk_stats *cs, struct dentry *parent); +void xchk_stats_unregister(struct xchk_stats *cs); + +void xchk_stats_merge(struct xfs_mount *mp, const struct xfs_scrub_metadata *sm, + const struct xchk_stats_run *run); + +static inline u64 xchk_stats_now(void) { return ktime_get_ns(); } +static inline u64 xchk_stats_elapsed_ns(u64 since) +{ + u64 now = xchk_stats_now(); + + /* + * If the system doesn't have a high enough resolution clock, charge at + * least one nanosecond so that our stats don't report instantaneous + * runtimes. + */ + if (now == since) + return 1; + + return now - since; +} +#else +# define xchk_global_stats_setup(parent) (0) +# define xchk_global_stats_teardown() ((void)0) +# define xchk_mount_stats_alloc(mp) (0) +# define xchk_mount_stats_free(mp) ((void)0) +# define xchk_stats_register(cs, parent) ((void)0) +# define xchk_stats_unregister(cs) ((void)0) +# define xchk_stats_now() (0) +# define xchk_stats_elapsed_ns(x) (0 * (x)) +# define xchk_stats_merge(mp, sm, run) ((void)0) +#endif /* CONFIG_XFS_ONLINE_SCRUB_STATS */ + +#endif /* __XFS_SCRUB_STATS_H__ */ diff --git a/fs/xfs/scrub/trace.c b/fs/xfs/scrub/trace.c index 0a975439d2b6..46249e7b17e0 100644 --- a/fs/xfs/scrub/trace.c +++ b/fs/xfs/scrub/trace.c @@ -12,8 +12,10 @@ #include "xfs_mount.h" #include "xfs_inode.h" #include "xfs_btree.h" -#include "scrub/scrub.h" #include "xfs_ag.h" +#include "scrub/scrub.h" +#include "scrub/xfile.h" +#include "scrub/xfarray.h" /* Figure out which block the btree cursor was pointing to. */ static inline xfs_fsblock_t diff --git a/fs/xfs/scrub/trace.h b/fs/xfs/scrub/trace.h index b3894daeb86a..cbd4d01e253c 100644 --- a/fs/xfs/scrub/trace.h +++ b/fs/xfs/scrub/trace.h @@ -16,6 +16,10 @@ #include <linux/tracepoint.h> #include "xfs_bit.h" +struct xfile; +struct xfarray; +struct xfarray_sortinfo; + /* * ftrace's __print_symbolic requires that all enum values be wrapped in the * TRACE_DEFINE_ENUM macro so that the enum value can be encoded in the ftrace @@ -94,10 +98,12 @@ TRACE_DEFINE_ENUM(XFS_SCRUB_TYPE_FSCOUNTERS); { XFS_SCRUB_OFLAG_XCORRUPT, "xcorrupt" }, \ { XFS_SCRUB_OFLAG_INCOMPLETE, "incomplete" }, \ { XFS_SCRUB_OFLAG_WARNING, "warning" }, \ - { XFS_SCRUB_OFLAG_NO_REPAIR_NEEDED, "norepair" } + { XFS_SCRUB_OFLAG_NO_REPAIR_NEEDED, "norepair" }, \ + { XFS_SCRUB_IFLAG_FORCE_REBUILD, "rebuild" } #define XFS_SCRUB_STATE_STRINGS \ { XCHK_TRY_HARDER, "try_harder" }, \ + { XCHK_HAVE_FREEZE_PROT, "nofreeze" }, \ { XCHK_FSGATES_DRAIN, "fsgates_drain" }, \ { XCHK_NEED_DRAIN, "need_drain" }, \ { XREP_ALREADY_FIXED, "already_fixed" } @@ -635,6 +641,28 @@ TRACE_EVENT(xchk_iallocbt_check_cluster, __entry->cluster_ino) ) +TRACE_EVENT(xchk_inode_is_allocated, + TP_PROTO(struct xfs_inode *ip), + TP_ARGS(ip), + TP_STRUCT__entry( + __field(dev_t, dev) + __field(xfs_ino_t, ino) + __field(unsigned long, iflags) + __field(umode_t, mode) + ), + TP_fast_assign( + __entry->dev = VFS_I(ip)->i_sb->s_dev; + __entry->ino = ip->i_ino; + __entry->iflags = ip->i_flags; + __entry->mode = VFS_I(ip)->i_mode; + ), + TP_printk("dev %d:%d ino 0x%llx iflags 0x%lx mode 0x%x", + MAJOR(__entry->dev), MINOR(__entry->dev), + __entry->ino, + __entry->iflags, + __entry->mode) +); + TRACE_EVENT(xchk_fscounters_calc, TP_PROTO(struct xfs_mount *mp, uint64_t icount, uint64_t ifree, uint64_t fdblocks, uint64_t delalloc), @@ -693,6 +721,31 @@ TRACE_EVENT(xchk_fscounters_within_range, __entry->old_value) ) +DECLARE_EVENT_CLASS(xchk_fsfreeze_class, + TP_PROTO(struct xfs_scrub *sc, int error), + TP_ARGS(sc, error), + TP_STRUCT__entry( + __field(dev_t, dev) + __field(unsigned int, type) + __field(int, error) + ), + TP_fast_assign( + __entry->dev = sc->mp->m_super->s_dev; + __entry->type = sc->sm->sm_type; + __entry->error = error; + ), + TP_printk("dev %d:%d type %s error %d", + MAJOR(__entry->dev), MINOR(__entry->dev), + __print_symbolic(__entry->type, XFS_SCRUB_TYPE_STRINGS), + __entry->error) +); +#define DEFINE_XCHK_FSFREEZE_EVENT(name) \ +DEFINE_EVENT(xchk_fsfreeze_class, name, \ + TP_PROTO(struct xfs_scrub *sc, int error), \ + TP_ARGS(sc, error)) +DEFINE_XCHK_FSFREEZE_EVENT(xchk_fsfreeze); +DEFINE_XCHK_FSFREEZE_EVENT(xchk_fsthaw); + TRACE_EVENT(xchk_refcount_incorrect, TP_PROTO(struct xfs_perag *pag, const struct xfs_refcount_irec *irec, xfs_nlink_t seen), @@ -725,13 +778,302 @@ TRACE_EVENT(xchk_refcount_incorrect, __entry->seen) ) +TRACE_EVENT(xfile_create, + TP_PROTO(struct xfile *xf), + TP_ARGS(xf), + TP_STRUCT__entry( + __field(dev_t, dev) + __field(unsigned long, ino) + __array(char, pathname, 256) + ), + TP_fast_assign( + char pathname[257]; + char *path; + + __entry->ino = file_inode(xf->file)->i_ino; + memset(pathname, 0, sizeof(pathname)); + path = file_path(xf->file, pathname, sizeof(pathname) - 1); + if (IS_ERR(path)) + path = "(unknown)"; + strncpy(__entry->pathname, path, sizeof(__entry->pathname)); + ), + TP_printk("xfino 0x%lx path '%s'", + __entry->ino, + __entry->pathname) +); + +TRACE_EVENT(xfile_destroy, + TP_PROTO(struct xfile *xf), + TP_ARGS(xf), + TP_STRUCT__entry( + __field(unsigned long, ino) + __field(unsigned long long, bytes) + __field(loff_t, size) + ), + TP_fast_assign( + struct xfile_stat statbuf; + int ret; + + ret = xfile_stat(xf, &statbuf); + if (!ret) { + __entry->bytes = statbuf.bytes; + __entry->size = statbuf.size; + } else { + __entry->bytes = -1; + __entry->size = -1; + } + __entry->ino = file_inode(xf->file)->i_ino; + ), + TP_printk("xfino 0x%lx mem_bytes 0x%llx isize 0x%llx", + __entry->ino, + __entry->bytes, + __entry->size) +); + +DECLARE_EVENT_CLASS(xfile_class, + TP_PROTO(struct xfile *xf, loff_t pos, unsigned long long bytecount), + TP_ARGS(xf, pos, bytecount), + TP_STRUCT__entry( + __field(unsigned long, ino) + __field(unsigned long long, bytes_used) + __field(loff_t, pos) + __field(loff_t, size) + __field(unsigned long long, bytecount) + ), + TP_fast_assign( + struct xfile_stat statbuf; + int ret; + + ret = xfile_stat(xf, &statbuf); + if (!ret) { + __entry->bytes_used = statbuf.bytes; + __entry->size = statbuf.size; + } else { + __entry->bytes_used = -1; + __entry->size = -1; + } + __entry->ino = file_inode(xf->file)->i_ino; + __entry->pos = pos; + __entry->bytecount = bytecount; + ), + TP_printk("xfino 0x%lx mem_bytes 0x%llx pos 0x%llx bytecount 0x%llx isize 0x%llx", + __entry->ino, + __entry->bytes_used, + __entry->pos, + __entry->bytecount, + __entry->size) +); +#define DEFINE_XFILE_EVENT(name) \ +DEFINE_EVENT(xfile_class, name, \ + TP_PROTO(struct xfile *xf, loff_t pos, unsigned long long bytecount), \ + TP_ARGS(xf, pos, bytecount)) +DEFINE_XFILE_EVENT(xfile_pread); +DEFINE_XFILE_EVENT(xfile_pwrite); +DEFINE_XFILE_EVENT(xfile_seek_data); +DEFINE_XFILE_EVENT(xfile_get_page); +DEFINE_XFILE_EVENT(xfile_put_page); + +TRACE_EVENT(xfarray_create, + TP_PROTO(struct xfarray *xfa, unsigned long long required_capacity), + TP_ARGS(xfa, required_capacity), + TP_STRUCT__entry( + __field(unsigned long, ino) + __field(uint64_t, max_nr) + __field(size_t, obj_size) + __field(int, obj_size_log) + __field(unsigned long long, required_capacity) + ), + TP_fast_assign( + __entry->max_nr = xfa->max_nr; + __entry->obj_size = xfa->obj_size; + __entry->obj_size_log = xfa->obj_size_log; + __entry->ino = file_inode(xfa->xfile->file)->i_ino; + __entry->required_capacity = required_capacity; + ), + TP_printk("xfino 0x%lx max_nr %llu reqd_nr %llu objsz %zu objszlog %d", + __entry->ino, + __entry->max_nr, + __entry->required_capacity, + __entry->obj_size, + __entry->obj_size_log) +); + +TRACE_EVENT(xfarray_isort, + TP_PROTO(struct xfarray_sortinfo *si, uint64_t lo, uint64_t hi), + TP_ARGS(si, lo, hi), + TP_STRUCT__entry( + __field(unsigned long, ino) + __field(unsigned long long, lo) + __field(unsigned long long, hi) + ), + TP_fast_assign( + __entry->ino = file_inode(si->array->xfile->file)->i_ino; + __entry->lo = lo; + __entry->hi = hi; + ), + TP_printk("xfino 0x%lx lo %llu hi %llu elts %llu", + __entry->ino, + __entry->lo, + __entry->hi, + __entry->hi - __entry->lo) +); + +TRACE_EVENT(xfarray_pagesort, + TP_PROTO(struct xfarray_sortinfo *si, uint64_t lo, uint64_t hi), + TP_ARGS(si, lo, hi), + TP_STRUCT__entry( + __field(unsigned long, ino) + __field(unsigned long long, lo) + __field(unsigned long long, hi) + ), + TP_fast_assign( + __entry->ino = file_inode(si->array->xfile->file)->i_ino; + __entry->lo = lo; + __entry->hi = hi; + ), + TP_printk("xfino 0x%lx lo %llu hi %llu elts %llu", + __entry->ino, + __entry->lo, + __entry->hi, + __entry->hi - __entry->lo) +); + +TRACE_EVENT(xfarray_qsort, + TP_PROTO(struct xfarray_sortinfo *si, uint64_t lo, uint64_t hi), + TP_ARGS(si, lo, hi), + TP_STRUCT__entry( + __field(unsigned long, ino) + __field(unsigned long long, lo) + __field(unsigned long long, hi) + __field(int, stack_depth) + __field(int, max_stack_depth) + ), + TP_fast_assign( + __entry->ino = file_inode(si->array->xfile->file)->i_ino; + __entry->lo = lo; + __entry->hi = hi; + __entry->stack_depth = si->stack_depth; + __entry->max_stack_depth = si->max_stack_depth; + ), + TP_printk("xfino 0x%lx lo %llu hi %llu elts %llu stack %d/%d", + __entry->ino, + __entry->lo, + __entry->hi, + __entry->hi - __entry->lo, + __entry->stack_depth, + __entry->max_stack_depth) +); + +TRACE_EVENT(xfarray_sort, + TP_PROTO(struct xfarray_sortinfo *si, size_t bytes), + TP_ARGS(si, bytes), + TP_STRUCT__entry( + __field(unsigned long, ino) + __field(unsigned long long, nr) + __field(size_t, obj_size) + __field(size_t, bytes) + __field(unsigned int, max_stack_depth) + ), + TP_fast_assign( + __entry->nr = si->array->nr; + __entry->obj_size = si->array->obj_size; + __entry->ino = file_inode(si->array->xfile->file)->i_ino; + __entry->bytes = bytes; + __entry->max_stack_depth = si->max_stack_depth; + ), + TP_printk("xfino 0x%lx nr %llu objsz %zu stack %u bytes %zu", + __entry->ino, + __entry->nr, + __entry->obj_size, + __entry->max_stack_depth, + __entry->bytes) +); + +TRACE_EVENT(xfarray_sort_stats, + TP_PROTO(struct xfarray_sortinfo *si, int error), + TP_ARGS(si, error), + TP_STRUCT__entry( + __field(unsigned long, ino) +#ifdef DEBUG + __field(unsigned long long, loads) + __field(unsigned long long, stores) + __field(unsigned long long, compares) + __field(unsigned long long, heapsorts) +#endif + __field(unsigned int, max_stack_depth) + __field(unsigned int, max_stack_used) + __field(int, error) + ), + TP_fast_assign( + __entry->ino = file_inode(si->array->xfile->file)->i_ino; +#ifdef DEBUG + __entry->loads = si->loads; + __entry->stores = si->stores; + __entry->compares = si->compares; + __entry->heapsorts = si->heapsorts; +#endif + __entry->max_stack_depth = si->max_stack_depth; + __entry->max_stack_used = si->max_stack_used; + __entry->error = error; + ), + TP_printk( +#ifdef DEBUG + "xfino 0x%lx loads %llu stores %llu compares %llu heapsorts %llu stack_depth %u/%u error %d", +#else + "xfino 0x%lx stack_depth %u/%u error %d", +#endif + __entry->ino, +#ifdef DEBUG + __entry->loads, + __entry->stores, + __entry->compares, + __entry->heapsorts, +#endif + __entry->max_stack_used, + __entry->max_stack_depth, + __entry->error) +); + +#ifdef CONFIG_XFS_RT +TRACE_EVENT(xchk_rtsum_record_free, + TP_PROTO(struct xfs_mount *mp, xfs_rtblock_t start, + uint64_t len, unsigned int log, loff_t pos, xfs_suminfo_t v), + TP_ARGS(mp, start, len, log, pos, v), + TP_STRUCT__entry( + __field(dev_t, dev) + __field(dev_t, rtdev) + __field(xfs_rtblock_t, start) + __field(unsigned long long, len) + __field(unsigned int, log) + __field(loff_t, pos) + __field(xfs_suminfo_t, v) + ), + TP_fast_assign( + __entry->dev = mp->m_super->s_dev; + __entry->rtdev = mp->m_rtdev_targp->bt_dev; + __entry->start = start; + __entry->len = len; + __entry->log = log; + __entry->pos = pos; + __entry->v = v; + ), + TP_printk("dev %d:%d rtdev %d:%d rtx 0x%llx rtxcount 0x%llx log %u rsumpos 0x%llx sumcount %u", + MAJOR(__entry->dev), MINOR(__entry->dev), + MAJOR(__entry->rtdev), MINOR(__entry->rtdev), + __entry->start, + __entry->len, + __entry->log, + __entry->pos, + __entry->v) +); +#endif /* CONFIG_XFS_RT */ + /* repair tracepoints */ #if IS_ENABLED(CONFIG_XFS_ONLINE_REPAIR) DECLARE_EVENT_CLASS(xrep_extent_class, - TP_PROTO(struct xfs_mount *mp, xfs_agnumber_t agno, - xfs_agblock_t agbno, xfs_extlen_t len), - TP_ARGS(mp, agno, agbno, len), + TP_PROTO(struct xfs_perag *pag, xfs_agblock_t agbno, xfs_extlen_t len), + TP_ARGS(pag, agbno, len), TP_STRUCT__entry( __field(dev_t, dev) __field(xfs_agnumber_t, agno) @@ -739,8 +1081,8 @@ DECLARE_EVENT_CLASS(xrep_extent_class, __field(xfs_extlen_t, len) ), TP_fast_assign( - __entry->dev = mp->m_super->s_dev; - __entry->agno = agno; + __entry->dev = pag->pag_mount->m_super->s_dev; + __entry->agno = pag->pag_agno; __entry->agbno = agbno; __entry->len = len; ), @@ -752,12 +1094,45 @@ DECLARE_EVENT_CLASS(xrep_extent_class, ); #define DEFINE_REPAIR_EXTENT_EVENT(name) \ DEFINE_EVENT(xrep_extent_class, name, \ - TP_PROTO(struct xfs_mount *mp, xfs_agnumber_t agno, \ - xfs_agblock_t agbno, xfs_extlen_t len), \ - TP_ARGS(mp, agno, agbno, len)) -DEFINE_REPAIR_EXTENT_EVENT(xrep_dispose_btree_extent); + TP_PROTO(struct xfs_perag *pag, xfs_agblock_t agbno, xfs_extlen_t len), \ + TP_ARGS(pag, agbno, len)) +DEFINE_REPAIR_EXTENT_EVENT(xreap_dispose_unmap_extent); +DEFINE_REPAIR_EXTENT_EVENT(xreap_dispose_free_extent); +DEFINE_REPAIR_EXTENT_EVENT(xreap_agextent_binval); DEFINE_REPAIR_EXTENT_EVENT(xrep_agfl_insert); +DECLARE_EVENT_CLASS(xrep_reap_find_class, + TP_PROTO(struct xfs_perag *pag, xfs_agblock_t agbno, xfs_extlen_t len, + bool crosslinked), + TP_ARGS(pag, agbno, len, crosslinked), + TP_STRUCT__entry( + __field(dev_t, dev) + __field(xfs_agnumber_t, agno) + __field(xfs_agblock_t, agbno) + __field(xfs_extlen_t, len) + __field(bool, crosslinked) + ), + TP_fast_assign( + __entry->dev = pag->pag_mount->m_super->s_dev; + __entry->agno = pag->pag_agno; + __entry->agbno = agbno; + __entry->len = len; + __entry->crosslinked = crosslinked; + ), + TP_printk("dev %d:%d agno 0x%x agbno 0x%x fsbcount 0x%x crosslinked %d", + MAJOR(__entry->dev), MINOR(__entry->dev), + __entry->agno, + __entry->agbno, + __entry->len, + __entry->crosslinked ? 1 : 0) +); +#define DEFINE_REPAIR_REAP_FIND_EVENT(name) \ +DEFINE_EVENT(xrep_reap_find_class, name, \ + TP_PROTO(struct xfs_perag *pag, xfs_agblock_t agbno, xfs_extlen_t len, \ + bool crosslinked), \ + TP_ARGS(pag, agbno, len, crosslinked)) +DEFINE_REPAIR_REAP_FIND_EVENT(xreap_agextent_select); + DECLARE_EVENT_CLASS(xrep_rmap_class, TP_PROTO(struct xfs_mount *mp, xfs_agnumber_t agno, xfs_agblock_t agbno, xfs_extlen_t len, @@ -827,28 +1202,6 @@ TRACE_EVENT(xrep_refcount_extent_fn, __entry->refcount) ) -TRACE_EVENT(xrep_init_btblock, - TP_PROTO(struct xfs_mount *mp, xfs_agnumber_t agno, xfs_agblock_t agbno, - xfs_btnum_t btnum), - TP_ARGS(mp, agno, agbno, btnum), - TP_STRUCT__entry( - __field(dev_t, dev) - __field(xfs_agnumber_t, agno) - __field(xfs_agblock_t, agbno) - __field(uint32_t, btnum) - ), - TP_fast_assign( - __entry->dev = mp->m_super->s_dev; - __entry->agno = agno; - __entry->agbno = agbno; - __entry->btnum = btnum; - ), - TP_printk("dev %d:%d agno 0x%x agbno 0x%x btree %s", - MAJOR(__entry->dev), MINOR(__entry->dev), - __entry->agno, - __entry->agbno, - __print_symbolic(__entry->btnum, XFS_BTNUM_STRINGS)) -) TRACE_EVENT(xrep_findroot_block, TP_PROTO(struct xfs_mount *mp, xfs_agnumber_t agno, xfs_agblock_t agbno, uint32_t magic, uint16_t level), diff --git a/fs/xfs/scrub/xfarray.c b/fs/xfs/scrub/xfarray.c new file mode 100644 index 000000000000..f0f532c10a5a --- /dev/null +++ b/fs/xfs/scrub/xfarray.c @@ -0,0 +1,1083 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Copyright (C) 2021-2023 Oracle. All Rights Reserved. + * Author: Darrick J. Wong <djwong@kernel.org> + */ +#include "xfs.h" +#include "xfs_fs.h" +#include "xfs_shared.h" +#include "xfs_format.h" +#include "scrub/xfile.h" +#include "scrub/xfarray.h" +#include "scrub/scrub.h" +#include "scrub/trace.h" + +/* + * Large Arrays of Fixed-Size Records + * ================================== + * + * This memory array uses an xfile (which itself is a memfd "file") to store + * large numbers of fixed-size records in memory that can be paged out. This + * puts less stress on the memory reclaim algorithms during an online repair + * because we don't have to pin so much memory. However, array access is less + * direct than would be in a regular memory array. Access to the array is + * performed via indexed load and store methods, and an append method is + * provided for convenience. Array elements can be unset, which sets them to + * all zeroes. Unset entries are skipped during iteration, though direct loads + * will return a zeroed buffer. Callers are responsible for concurrency + * control. + */ + +/* + * Pointer to scratch space. Because we can't access the xfile data directly, + * we allocate a small amount of memory on the end of the xfarray structure to + * buffer array items when we need space to store values temporarily. + */ +static inline void *xfarray_scratch(struct xfarray *array) +{ + return (array + 1); +} + +/* Compute array index given an xfile offset. */ +static xfarray_idx_t +xfarray_idx( + struct xfarray *array, + loff_t pos) +{ + if (array->obj_size_log >= 0) + return (xfarray_idx_t)pos >> array->obj_size_log; + + return div_u64((xfarray_idx_t)pos, array->obj_size); +} + +/* Compute xfile offset of array element. */ +static inline loff_t xfarray_pos(struct xfarray *array, xfarray_idx_t idx) +{ + if (array->obj_size_log >= 0) + return idx << array->obj_size_log; + + return idx * array->obj_size; +} + +/* + * Initialize a big memory array. Array records cannot be larger than a + * page, and the array cannot span more bytes than the page cache supports. + * If @required_capacity is nonzero, the maximum array size will be set to this + * quantity and the array creation will fail if the underlying storage cannot + * support that many records. + */ +int +xfarray_create( + const char *description, + unsigned long long required_capacity, + size_t obj_size, + struct xfarray **arrayp) +{ + struct xfarray *array; + struct xfile *xfile; + int error; + + ASSERT(obj_size < PAGE_SIZE); + + error = xfile_create(description, 0, &xfile); + if (error) + return error; + + error = -ENOMEM; + array = kzalloc(sizeof(struct xfarray) + obj_size, XCHK_GFP_FLAGS); + if (!array) + goto out_xfile; + + array->xfile = xfile; + array->obj_size = obj_size; + + if (is_power_of_2(obj_size)) + array->obj_size_log = ilog2(obj_size); + else + array->obj_size_log = -1; + + array->max_nr = xfarray_idx(array, MAX_LFS_FILESIZE); + trace_xfarray_create(array, required_capacity); + + if (required_capacity > 0) { + if (array->max_nr < required_capacity) { + error = -ENOMEM; + goto out_xfarray; + } + array->max_nr = required_capacity; + } + + *arrayp = array; + return 0; + +out_xfarray: + kfree(array); +out_xfile: + xfile_destroy(xfile); + return error; +} + +/* Destroy the array. */ +void +xfarray_destroy( + struct xfarray *array) +{ + xfile_destroy(array->xfile); + kfree(array); +} + +/* Load an element from the array. */ +int +xfarray_load( + struct xfarray *array, + xfarray_idx_t idx, + void *ptr) +{ + if (idx >= array->nr) + return -ENODATA; + + return xfile_obj_load(array->xfile, ptr, array->obj_size, + xfarray_pos(array, idx)); +} + +/* Is this array element potentially unset? */ +static inline bool +xfarray_is_unset( + struct xfarray *array, + loff_t pos) +{ + void *temp = xfarray_scratch(array); + int error; + + if (array->unset_slots == 0) + return false; + + error = xfile_obj_load(array->xfile, temp, array->obj_size, pos); + if (!error && xfarray_element_is_null(array, temp)) + return true; + + return false; +} + +/* + * Unset an array element. If @idx is the last element in the array, the + * array will be truncated. Otherwise, the entry will be zeroed. + */ +int +xfarray_unset( + struct xfarray *array, + xfarray_idx_t idx) +{ + void *temp = xfarray_scratch(array); + loff_t pos = xfarray_pos(array, idx); + int error; + + if (idx >= array->nr) + return -ENODATA; + + if (idx == array->nr - 1) { + array->nr--; + return 0; + } + + if (xfarray_is_unset(array, pos)) + return 0; + + memset(temp, 0, array->obj_size); + error = xfile_obj_store(array->xfile, temp, array->obj_size, pos); + if (error) + return error; + + array->unset_slots++; + return 0; +} + +/* + * Store an element in the array. The element must not be completely zeroed, + * because those are considered unset sparse elements. + */ +int +xfarray_store( + struct xfarray *array, + xfarray_idx_t idx, + const void *ptr) +{ + int ret; + + if (idx >= array->max_nr) + return -EFBIG; + + ASSERT(!xfarray_element_is_null(array, ptr)); + + ret = xfile_obj_store(array->xfile, ptr, array->obj_size, + xfarray_pos(array, idx)); + if (ret) + return ret; + + array->nr = max(array->nr, idx + 1); + return 0; +} + +/* Is this array element NULL? */ +bool +xfarray_element_is_null( + struct xfarray *array, + const void *ptr) +{ + return !memchr_inv(ptr, 0, array->obj_size); +} + +/* + * Store an element anywhere in the array that is unset. If there are no + * unset slots, append the element to the array. + */ +int +xfarray_store_anywhere( + struct xfarray *array, + const void *ptr) +{ + void *temp = xfarray_scratch(array); + loff_t endpos = xfarray_pos(array, array->nr); + loff_t pos; + int error; + + /* Find an unset slot to put it in. */ + for (pos = 0; + pos < endpos && array->unset_slots > 0; + pos += array->obj_size) { + error = xfile_obj_load(array->xfile, temp, array->obj_size, + pos); + if (error || !xfarray_element_is_null(array, temp)) + continue; + + error = xfile_obj_store(array->xfile, ptr, array->obj_size, + pos); + if (error) + return error; + + array->unset_slots--; + return 0; + } + + /* No unset slots found; attach it on the end. */ + array->unset_slots = 0; + return xfarray_append(array, ptr); +} + +/* Return length of array. */ +uint64_t +xfarray_length( + struct xfarray *array) +{ + return array->nr; +} + +/* + * Decide which array item we're going to read as part of an _iter_get. + * @cur is the array index, and @pos is the file offset of that array index in + * the backing xfile. Returns ENODATA if we reach the end of the records. + * + * Reading from a hole in a sparse xfile causes page instantiation, so for + * iterating a (possibly sparse) array we need to figure out if the cursor is + * pointing at a totally uninitialized hole and move the cursor up if + * necessary. + */ +static inline int +xfarray_find_data( + struct xfarray *array, + xfarray_idx_t *cur, + loff_t *pos) +{ + unsigned int pgoff = offset_in_page(*pos); + loff_t end_pos = *pos + array->obj_size - 1; + loff_t new_pos; + + /* + * If the current array record is not adjacent to a page boundary, we + * are in the middle of the page. We do not need to move the cursor. + */ + if (pgoff != 0 && pgoff + array->obj_size - 1 < PAGE_SIZE) + return 0; + + /* + * Call SEEK_DATA on the last byte in the record we're about to read. + * If the record ends at (or crosses) the end of a page then we know + * that the first byte of the record is backed by pages and don't need + * to query it. If instead the record begins at the start of the page + * then we know that querying the last byte is just as good as querying + * the first byte, since records cannot be larger than a page. + * + * If the call returns the same file offset, we know this record is + * backed by real pages. We do not need to move the cursor. + */ + new_pos = xfile_seek_data(array->xfile, end_pos); + if (new_pos == -ENXIO) + return -ENODATA; + if (new_pos < 0) + return new_pos; + if (new_pos == end_pos) + return 0; + + /* + * Otherwise, SEEK_DATA told us how far up to move the file pointer to + * find more data. Move the array index to the first record past the + * byte offset we were given. + */ + new_pos = roundup_64(new_pos, array->obj_size); + *cur = xfarray_idx(array, new_pos); + *pos = xfarray_pos(array, *cur); + return 0; +} + +/* + * Starting at *idx, fetch the next non-null array entry and advance the index + * to set up the next _load_next call. Returns ENODATA if we reach the end of + * the array. Callers must set @*idx to XFARRAY_CURSOR_INIT before the first + * call to this function. + */ +int +xfarray_load_next( + struct xfarray *array, + xfarray_idx_t *idx, + void *rec) +{ + xfarray_idx_t cur = *idx; + loff_t pos = xfarray_pos(array, cur); + int error; + + do { + if (cur >= array->nr) + return -ENODATA; + + /* + * Ask the backing store for the location of next possible + * written record, then retrieve that record. + */ + error = xfarray_find_data(array, &cur, &pos); + if (error) + return error; + error = xfarray_load(array, cur, rec); + if (error) + return error; + + cur++; + pos += array->obj_size; + } while (xfarray_element_is_null(array, rec)); + + *idx = cur; + return 0; +} + +/* Sorting functions */ + +#ifdef DEBUG +# define xfarray_sort_bump_loads(si) do { (si)->loads++; } while (0) +# define xfarray_sort_bump_stores(si) do { (si)->stores++; } while (0) +# define xfarray_sort_bump_compares(si) do { (si)->compares++; } while (0) +# define xfarray_sort_bump_heapsorts(si) do { (si)->heapsorts++; } while (0) +#else +# define xfarray_sort_bump_loads(si) +# define xfarray_sort_bump_stores(si) +# define xfarray_sort_bump_compares(si) +# define xfarray_sort_bump_heapsorts(si) +#endif /* DEBUG */ + +/* Load an array element for sorting. */ +static inline int +xfarray_sort_load( + struct xfarray_sortinfo *si, + xfarray_idx_t idx, + void *ptr) +{ + xfarray_sort_bump_loads(si); + return xfarray_load(si->array, idx, ptr); +} + +/* Store an array element for sorting. */ +static inline int +xfarray_sort_store( + struct xfarray_sortinfo *si, + xfarray_idx_t idx, + void *ptr) +{ + xfarray_sort_bump_stores(si); + return xfarray_store(si->array, idx, ptr); +} + +/* Compare an array element for sorting. */ +static inline int +xfarray_sort_cmp( + struct xfarray_sortinfo *si, + const void *a, + const void *b) +{ + xfarray_sort_bump_compares(si); + return si->cmp_fn(a, b); +} + +/* Return a pointer to the low index stack for quicksort partitioning. */ +static inline xfarray_idx_t *xfarray_sortinfo_lo(struct xfarray_sortinfo *si) +{ + return (xfarray_idx_t *)(si + 1); +} + +/* Return a pointer to the high index stack for quicksort partitioning. */ +static inline xfarray_idx_t *xfarray_sortinfo_hi(struct xfarray_sortinfo *si) +{ + return xfarray_sortinfo_lo(si) + si->max_stack_depth; +} + +/* Size of each element in the quicksort pivot array. */ +static inline size_t +xfarray_pivot_rec_sz( + struct xfarray *array) +{ + return round_up(array->obj_size, 8) + sizeof(xfarray_idx_t); +} + +/* Allocate memory to handle the sort. */ +static inline int +xfarray_sortinfo_alloc( + struct xfarray *array, + xfarray_cmp_fn cmp_fn, + unsigned int flags, + struct xfarray_sortinfo **infop) +{ + struct xfarray_sortinfo *si; + size_t nr_bytes = sizeof(struct xfarray_sortinfo); + size_t pivot_rec_sz = xfarray_pivot_rec_sz(array); + int max_stack_depth; + + /* + * The median-of-nine pivot algorithm doesn't work if a subset has + * fewer than 9 items. Make sure the in-memory sort will always take + * over for subsets where this wouldn't be the case. + */ + BUILD_BUG_ON(XFARRAY_QSORT_PIVOT_NR >= XFARRAY_ISORT_NR); + + /* + * Tail-call recursion during the partitioning phase means that + * quicksort will never recurse more than log2(nr) times. We need one + * extra level of stack to hold the initial parameters. In-memory + * sort will always take care of the last few levels of recursion for + * us, so we can reduce the stack depth by that much. + */ + max_stack_depth = ilog2(array->nr) + 1 - (XFARRAY_ISORT_SHIFT - 1); + if (max_stack_depth < 1) + max_stack_depth = 1; + + /* Each level of quicksort uses a lo and a hi index */ + nr_bytes += max_stack_depth * sizeof(xfarray_idx_t) * 2; + + /* Scratchpad for in-memory sort, or finding the pivot */ + nr_bytes += max_t(size_t, + (XFARRAY_QSORT_PIVOT_NR + 1) * pivot_rec_sz, + XFARRAY_ISORT_NR * array->obj_size); + + si = kvzalloc(nr_bytes, XCHK_GFP_FLAGS); + if (!si) + return -ENOMEM; + + si->array = array; + si->cmp_fn = cmp_fn; + si->flags = flags; + si->max_stack_depth = max_stack_depth; + si->max_stack_used = 1; + + xfarray_sortinfo_lo(si)[0] = 0; + xfarray_sortinfo_hi(si)[0] = array->nr - 1; + + trace_xfarray_sort(si, nr_bytes); + *infop = si; + return 0; +} + +/* Should this sort be terminated by a fatal signal? */ +static inline bool +xfarray_sort_terminated( + struct xfarray_sortinfo *si, + int *error) +{ + /* + * If preemption is disabled, we need to yield to the scheduler every + * few seconds so that we don't run afoul of the soft lockup watchdog + * or RCU stall detector. + */ + cond_resched(); + + if ((si->flags & XFARRAY_SORT_KILLABLE) && + fatal_signal_pending(current)) { + if (*error == 0) + *error = -EINTR; + return true; + } + return false; +} + +/* Do we want an in-memory sort? */ +static inline bool +xfarray_want_isort( + struct xfarray_sortinfo *si, + xfarray_idx_t start, + xfarray_idx_t end) +{ + /* + * For array subsets that fit in the scratchpad, it's much faster to + * use the kernel's heapsort than quicksort's stack machine. + */ + return (end - start) < XFARRAY_ISORT_NR; +} + +/* Return the scratch space within the sortinfo structure. */ +static inline void *xfarray_sortinfo_isort_scratch(struct xfarray_sortinfo *si) +{ + return xfarray_sortinfo_hi(si) + si->max_stack_depth; +} + +/* + * Sort a small number of array records using scratchpad memory. The records + * need not be contiguous in the xfile's memory pages. + */ +STATIC int +xfarray_isort( + struct xfarray_sortinfo *si, + xfarray_idx_t lo, + xfarray_idx_t hi) +{ + void *scratch = xfarray_sortinfo_isort_scratch(si); + loff_t lo_pos = xfarray_pos(si->array, lo); + loff_t len = xfarray_pos(si->array, hi - lo + 1); + int error; + + trace_xfarray_isort(si, lo, hi); + + xfarray_sort_bump_loads(si); + error = xfile_obj_load(si->array->xfile, scratch, len, lo_pos); + if (error) + return error; + + xfarray_sort_bump_heapsorts(si); + sort(scratch, hi - lo + 1, si->array->obj_size, si->cmp_fn, NULL); + + xfarray_sort_bump_stores(si); + return xfile_obj_store(si->array->xfile, scratch, len, lo_pos); +} + +/* Grab a page for sorting records. */ +static inline int +xfarray_sort_get_page( + struct xfarray_sortinfo *si, + loff_t pos, + uint64_t len) +{ + int error; + + error = xfile_get_page(si->array->xfile, pos, len, &si->xfpage); + if (error) + return error; + + /* + * xfile pages must never be mapped into userspace, so we skip the + * dcache flush when mapping the page. + */ + si->page_kaddr = kmap_local_page(si->xfpage.page); + return 0; +} + +/* Release a page we grabbed for sorting records. */ +static inline int +xfarray_sort_put_page( + struct xfarray_sortinfo *si) +{ + if (!si->page_kaddr) + return 0; + + kunmap_local(si->page_kaddr); + si->page_kaddr = NULL; + + return xfile_put_page(si->array->xfile, &si->xfpage); +} + +/* Decide if these records are eligible for in-page sorting. */ +static inline bool +xfarray_want_pagesort( + struct xfarray_sortinfo *si, + xfarray_idx_t lo, + xfarray_idx_t hi) +{ + pgoff_t lo_page; + pgoff_t hi_page; + loff_t end_pos; + + /* We can only map one page at a time. */ + lo_page = xfarray_pos(si->array, lo) >> PAGE_SHIFT; + end_pos = xfarray_pos(si->array, hi) + si->array->obj_size - 1; + hi_page = end_pos >> PAGE_SHIFT; + + return lo_page == hi_page; +} + +/* Sort a bunch of records that all live in the same memory page. */ +STATIC int +xfarray_pagesort( + struct xfarray_sortinfo *si, + xfarray_idx_t lo, + xfarray_idx_t hi) +{ + void *startp; + loff_t lo_pos = xfarray_pos(si->array, lo); + uint64_t len = xfarray_pos(si->array, hi - lo); + int error = 0; + + trace_xfarray_pagesort(si, lo, hi); + + xfarray_sort_bump_loads(si); + error = xfarray_sort_get_page(si, lo_pos, len); + if (error) + return error; + + xfarray_sort_bump_heapsorts(si); + startp = si->page_kaddr + offset_in_page(lo_pos); + sort(startp, hi - lo + 1, si->array->obj_size, si->cmp_fn, NULL); + + xfarray_sort_bump_stores(si); + return xfarray_sort_put_page(si); +} + +/* Return a pointer to the xfarray pivot record within the sortinfo struct. */ +static inline void *xfarray_sortinfo_pivot(struct xfarray_sortinfo *si) +{ + return xfarray_sortinfo_hi(si) + si->max_stack_depth; +} + +/* Return a pointer to the start of the pivot array. */ +static inline void * +xfarray_sortinfo_pivot_array( + struct xfarray_sortinfo *si) +{ + return xfarray_sortinfo_pivot(si) + si->array->obj_size; +} + +/* The xfarray record is stored at the start of each pivot array element. */ +static inline void * +xfarray_pivot_array_rec( + void *pa, + size_t pa_recsz, + unsigned int pa_idx) +{ + return pa + (pa_recsz * pa_idx); +} + +/* The xfarray index is stored at the end of each pivot array element. */ +static inline xfarray_idx_t * +xfarray_pivot_array_idx( + void *pa, + size_t pa_recsz, + unsigned int pa_idx) +{ + return xfarray_pivot_array_rec(pa, pa_recsz, pa_idx + 1) - + sizeof(xfarray_idx_t); +} + +/* + * Find a pivot value for quicksort partitioning, swap it with a[lo], and save + * the cached pivot record for the next step. + * + * Load evenly-spaced records within the given range into memory, sort them, + * and choose the pivot from the median record. Using multiple points will + * improve the quality of the pivot selection, and hopefully avoid the worst + * quicksort behavior, since our array values are nearly always evenly sorted. + */ +STATIC int +xfarray_qsort_pivot( + struct xfarray_sortinfo *si, + xfarray_idx_t lo, + xfarray_idx_t hi) +{ + void *pivot = xfarray_sortinfo_pivot(si); + void *parray = xfarray_sortinfo_pivot_array(si); + void *recp; + xfarray_idx_t *idxp; + xfarray_idx_t step = (hi - lo) / (XFARRAY_QSORT_PIVOT_NR - 1); + size_t pivot_rec_sz = xfarray_pivot_rec_sz(si->array); + int i, j; + int error; + + ASSERT(step > 0); + + /* + * Load the xfarray indexes of the records we intend to sample into the + * pivot array. + */ + idxp = xfarray_pivot_array_idx(parray, pivot_rec_sz, 0); + *idxp = lo; + for (i = 1; i < XFARRAY_QSORT_PIVOT_NR - 1; i++) { + idxp = xfarray_pivot_array_idx(parray, pivot_rec_sz, i); + *idxp = lo + (i * step); + } + idxp = xfarray_pivot_array_idx(parray, pivot_rec_sz, + XFARRAY_QSORT_PIVOT_NR - 1); + *idxp = hi; + + /* Load the selected xfarray records into the pivot array. */ + for (i = 0; i < XFARRAY_QSORT_PIVOT_NR; i++) { + xfarray_idx_t idx; + + recp = xfarray_pivot_array_rec(parray, pivot_rec_sz, i); + idxp = xfarray_pivot_array_idx(parray, pivot_rec_sz, i); + + /* No unset records; load directly into the array. */ + if (likely(si->array->unset_slots == 0)) { + error = xfarray_sort_load(si, *idxp, recp); + if (error) + return error; + continue; + } + + /* + * Load non-null records into the scratchpad without changing + * the xfarray_idx_t in the pivot array. + */ + idx = *idxp; + xfarray_sort_bump_loads(si); + error = xfarray_load_next(si->array, &idx, recp); + if (error) + return error; + } + + xfarray_sort_bump_heapsorts(si); + sort(parray, XFARRAY_QSORT_PIVOT_NR, pivot_rec_sz, si->cmp_fn, NULL); + + /* + * We sorted the pivot array records (which includes the xfarray + * indices) in xfarray record order. The median element of the pivot + * array contains the xfarray record that we will use as the pivot. + * Copy that xfarray record to the designated space. + */ + recp = xfarray_pivot_array_rec(parray, pivot_rec_sz, + XFARRAY_QSORT_PIVOT_NR / 2); + memcpy(pivot, recp, si->array->obj_size); + + /* If the pivot record we chose was already in a[lo] then we're done. */ + idxp = xfarray_pivot_array_idx(parray, pivot_rec_sz, + XFARRAY_QSORT_PIVOT_NR / 2); + if (*idxp == lo) + return 0; + + /* + * Find the cached copy of a[lo] in the pivot array so that we can swap + * a[lo] and a[pivot]. + */ + for (i = 0, j = -1; i < XFARRAY_QSORT_PIVOT_NR; i++) { + idxp = xfarray_pivot_array_idx(parray, pivot_rec_sz, i); + if (*idxp == lo) + j = i; + } + if (j < 0) { + ASSERT(j >= 0); + return -EFSCORRUPTED; + } + + /* Swap a[lo] and a[pivot]. */ + error = xfarray_sort_store(si, lo, pivot); + if (error) + return error; + + recp = xfarray_pivot_array_rec(parray, pivot_rec_sz, j); + idxp = xfarray_pivot_array_idx(parray, pivot_rec_sz, + XFARRAY_QSORT_PIVOT_NR / 2); + return xfarray_sort_store(si, *idxp, recp); +} + +/* + * Set up the pointers for the next iteration. We push onto the stack all of + * the unsorted values between a[lo + 1] and a[end[i]], and we tweak the + * current stack frame to point to the unsorted values between a[beg[i]] and + * a[lo] so that those values will be sorted when we pop the stack. + */ +static inline int +xfarray_qsort_push( + struct xfarray_sortinfo *si, + xfarray_idx_t *si_lo, + xfarray_idx_t *si_hi, + xfarray_idx_t lo, + xfarray_idx_t hi) +{ + /* Check for stack overflows */ + if (si->stack_depth >= si->max_stack_depth - 1) { + ASSERT(si->stack_depth < si->max_stack_depth - 1); + return -EFSCORRUPTED; + } + + si->max_stack_used = max_t(uint8_t, si->max_stack_used, + si->stack_depth + 2); + + si_lo[si->stack_depth + 1] = lo + 1; + si_hi[si->stack_depth + 1] = si_hi[si->stack_depth]; + si_hi[si->stack_depth++] = lo - 1; + + /* + * Always start with the smaller of the two partitions to keep the + * amount of recursion in check. + */ + if (si_hi[si->stack_depth] - si_lo[si->stack_depth] > + si_hi[si->stack_depth - 1] - si_lo[si->stack_depth - 1]) { + swap(si_lo[si->stack_depth], si_lo[si->stack_depth - 1]); + swap(si_hi[si->stack_depth], si_hi[si->stack_depth - 1]); + } + + return 0; +} + +/* + * Load an element from the array into the first scratchpad and cache the page, + * if possible. + */ +static inline int +xfarray_sort_load_cached( + struct xfarray_sortinfo *si, + xfarray_idx_t idx, + void *ptr) +{ + loff_t idx_pos = xfarray_pos(si->array, idx); + pgoff_t startpage; + pgoff_t endpage; + int error = 0; + + /* + * If this load would split a page, release the cached page, if any, + * and perform a traditional read. + */ + startpage = idx_pos >> PAGE_SHIFT; + endpage = (idx_pos + si->array->obj_size - 1) >> PAGE_SHIFT; + if (startpage != endpage) { + error = xfarray_sort_put_page(si); + if (error) + return error; + + if (xfarray_sort_terminated(si, &error)) + return error; + + return xfile_obj_load(si->array->xfile, ptr, + si->array->obj_size, idx_pos); + } + + /* If the cached page is not the one we want, release it. */ + if (xfile_page_cached(&si->xfpage) && + xfile_page_index(&si->xfpage) != startpage) { + error = xfarray_sort_put_page(si); + if (error) + return error; + } + + /* + * If we don't have a cached page (and we know the load is contained + * in a single page) then grab it. + */ + if (!xfile_page_cached(&si->xfpage)) { + if (xfarray_sort_terminated(si, &error)) + return error; + + error = xfarray_sort_get_page(si, startpage << PAGE_SHIFT, + PAGE_SIZE); + if (error) + return error; + } + + memcpy(ptr, si->page_kaddr + offset_in_page(idx_pos), + si->array->obj_size); + return 0; +} + +/* + * Sort the array elements via quicksort. This implementation incorporates + * four optimizations discussed in Sedgewick: + * + * 1. Use an explicit stack of array indices to store the next array partition + * to sort. This helps us to avoid recursion in the call stack, which is + * particularly expensive in the kernel. + * + * 2. For arrays with records in arbitrary or user-controlled order, choose the + * pivot element using a median-of-nine decision tree. This reduces the + * probability of selecting a bad pivot value which causes worst case + * behavior (i.e. partition sizes of 1). + * + * 3. The smaller of the two sub-partitions is pushed onto the stack to start + * the next level of recursion, and the larger sub-partition replaces the + * current stack frame. This guarantees that we won't need more than + * log2(nr) stack space. + * + * 4. For small sets, load the records into the scratchpad and run heapsort on + * them because that is very fast. In the author's experience, this yields + * a ~10% reduction in runtime. + * + * If a small set is contained entirely within a single xfile memory page, + * map the page directly and run heap sort directly on the xfile page + * instead of using the load/store interface. This halves the runtime. + * + * 5. This optimization is specific to the implementation. When converging lo + * and hi after selecting a pivot, we will try to retain the xfile memory + * page between load calls, which reduces run time by 50%. + */ + +/* + * Due to the use of signed indices, we can only support up to 2^63 records. + * Files can only grow to 2^63 bytes, so this is not much of a limitation. + */ +#define QSORT_MAX_RECS (1ULL << 63) + +int +xfarray_sort( + struct xfarray *array, + xfarray_cmp_fn cmp_fn, + unsigned int flags) +{ + struct xfarray_sortinfo *si; + xfarray_idx_t *si_lo, *si_hi; + void *pivot; + void *scratch = xfarray_scratch(array); + xfarray_idx_t lo, hi; + int error = 0; + + if (array->nr < 2) + return 0; + if (array->nr >= QSORT_MAX_RECS) + return -E2BIG; + + error = xfarray_sortinfo_alloc(array, cmp_fn, flags, &si); + if (error) + return error; + si_lo = xfarray_sortinfo_lo(si); + si_hi = xfarray_sortinfo_hi(si); + pivot = xfarray_sortinfo_pivot(si); + + while (si->stack_depth >= 0) { + lo = si_lo[si->stack_depth]; + hi = si_hi[si->stack_depth]; + + trace_xfarray_qsort(si, lo, hi); + + /* Nothing left in this partition to sort; pop stack. */ + if (lo >= hi) { + si->stack_depth--; + continue; + } + + /* + * If directly mapping the page and sorting can solve our + * problems, we're done. + */ + if (xfarray_want_pagesort(si, lo, hi)) { + error = xfarray_pagesort(si, lo, hi); + if (error) + goto out_free; + si->stack_depth--; + continue; + } + + /* If insertion sort can solve our problems, we're done. */ + if (xfarray_want_isort(si, lo, hi)) { + error = xfarray_isort(si, lo, hi); + if (error) + goto out_free; + si->stack_depth--; + continue; + } + + /* Pick a pivot, move it to a[lo] and stash it. */ + error = xfarray_qsort_pivot(si, lo, hi); + if (error) + goto out_free; + + /* + * Rearrange a[lo..hi] such that everything smaller than the + * pivot is on the left side of the range and everything larger + * than the pivot is on the right side of the range. + */ + while (lo < hi) { + /* + * Decrement hi until it finds an a[hi] less than the + * pivot value. + */ + error = xfarray_sort_load_cached(si, hi, scratch); + if (error) + goto out_free; + while (xfarray_sort_cmp(si, scratch, pivot) >= 0 && + lo < hi) { + hi--; + error = xfarray_sort_load_cached(si, hi, + scratch); + if (error) + goto out_free; + } + error = xfarray_sort_put_page(si); + if (error) + goto out_free; + + if (xfarray_sort_terminated(si, &error)) + goto out_free; + + /* Copy that item (a[hi]) to a[lo]. */ + if (lo < hi) { + error = xfarray_sort_store(si, lo++, scratch); + if (error) + goto out_free; + } + + /* + * Increment lo until it finds an a[lo] greater than + * the pivot value. + */ + error = xfarray_sort_load_cached(si, lo, scratch); + if (error) + goto out_free; + while (xfarray_sort_cmp(si, scratch, pivot) <= 0 && + lo < hi) { + lo++; + error = xfarray_sort_load_cached(si, lo, + scratch); + if (error) + goto out_free; + } + error = xfarray_sort_put_page(si); + if (error) + goto out_free; + + if (xfarray_sort_terminated(si, &error)) + goto out_free; + + /* Copy that item (a[lo]) to a[hi]. */ + if (lo < hi) { + error = xfarray_sort_store(si, hi--, scratch); + if (error) + goto out_free; + } + + if (xfarray_sort_terminated(si, &error)) + goto out_free; + } + + /* + * Put our pivot value in the correct place at a[lo]. All + * values between a[beg[i]] and a[lo - 1] should be less than + * the pivot; and all values between a[lo + 1] and a[end[i]-1] + * should be greater than the pivot. + */ + error = xfarray_sort_store(si, lo, pivot); + if (error) + goto out_free; + + /* Set up the stack frame to process the two partitions. */ + error = xfarray_qsort_push(si, si_lo, si_hi, lo, hi); + if (error) + goto out_free; + + if (xfarray_sort_terminated(si, &error)) + goto out_free; + } + +out_free: + trace_xfarray_sort_stats(si, error); + kvfree(si); + return error; +} diff --git a/fs/xfs/scrub/xfarray.h b/fs/xfs/scrub/xfarray.h new file mode 100644 index 000000000000..4ecac01363d9 --- /dev/null +++ b/fs/xfs/scrub/xfarray.h @@ -0,0 +1,141 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +/* + * Copyright (C) 2021-2023 Oracle. All Rights Reserved. + * Author: Darrick J. Wong <djwong@kernel.org> + */ +#ifndef __XFS_SCRUB_XFARRAY_H__ +#define __XFS_SCRUB_XFARRAY_H__ + +/* xfile array index type, along with cursor initialization */ +typedef uint64_t xfarray_idx_t; +#define XFARRAY_CURSOR_INIT ((__force xfarray_idx_t)0) + +/* Iterate each index of an xfile array. */ +#define foreach_xfarray_idx(array, idx) \ + for ((idx) = XFARRAY_CURSOR_INIT; \ + (idx) < xfarray_length(array); \ + (idx)++) + +struct xfarray { + /* Underlying file that backs the array. */ + struct xfile *xfile; + + /* Number of array elements. */ + xfarray_idx_t nr; + + /* Maximum possible array size. */ + xfarray_idx_t max_nr; + + /* Number of unset slots in the array below @nr. */ + uint64_t unset_slots; + + /* Size of an array element. */ + size_t obj_size; + + /* log2 of array element size, if possible. */ + int obj_size_log; +}; + +int xfarray_create(const char *descr, unsigned long long required_capacity, + size_t obj_size, struct xfarray **arrayp); +void xfarray_destroy(struct xfarray *array); +int xfarray_load(struct xfarray *array, xfarray_idx_t idx, void *ptr); +int xfarray_unset(struct xfarray *array, xfarray_idx_t idx); +int xfarray_store(struct xfarray *array, xfarray_idx_t idx, const void *ptr); +int xfarray_store_anywhere(struct xfarray *array, const void *ptr); +bool xfarray_element_is_null(struct xfarray *array, const void *ptr); + +/* Append an element to the array. */ +static inline int xfarray_append(struct xfarray *array, const void *ptr) +{ + return xfarray_store(array, array->nr, ptr); +} + +uint64_t xfarray_length(struct xfarray *array); +int xfarray_load_next(struct xfarray *array, xfarray_idx_t *idx, void *rec); + +/* Declarations for xfile array sort functionality. */ + +typedef cmp_func_t xfarray_cmp_fn; + +/* Perform an in-memory heapsort for small subsets. */ +#define XFARRAY_ISORT_SHIFT (4) +#define XFARRAY_ISORT_NR (1U << XFARRAY_ISORT_SHIFT) + +/* Evalulate this many points to find the qsort pivot. */ +#define XFARRAY_QSORT_PIVOT_NR (9) + +struct xfarray_sortinfo { + struct xfarray *array; + + /* Comparison function for the sort. */ + xfarray_cmp_fn cmp_fn; + + /* Maximum height of the partition stack. */ + uint8_t max_stack_depth; + + /* Current height of the partition stack. */ + int8_t stack_depth; + + /* Maximum stack depth ever used. */ + uint8_t max_stack_used; + + /* XFARRAY_SORT_* flags; see below. */ + unsigned int flags; + + /* Cache a page here for faster access. */ + struct xfile_page xfpage; + void *page_kaddr; + +#ifdef DEBUG + /* Performance statistics. */ + uint64_t loads; + uint64_t stores; + uint64_t compares; + uint64_t heapsorts; +#endif + /* + * Extra bytes are allocated beyond the end of the structure to store + * quicksort information. C does not permit multiple VLAs per struct, + * so we document all of this in a comment. + * + * Pretend that we have a typedef for array records: + * + * typedef char[array->obj_size] xfarray_rec_t; + * + * First comes the quicksort partition stack: + * + * xfarray_idx_t lo[max_stack_depth]; + * xfarray_idx_t hi[max_stack_depth]; + * + * union { + * + * If for a given subset we decide to use an in-memory sort, we use a + * block of scratchpad records here to compare items: + * + * xfarray_rec_t scratch[ISORT_NR]; + * + * Otherwise, we want to partition the records to partition the array. + * We store the chosen pivot record at the start of the scratchpad area + * and use the rest to sample some records to estimate the median. + * The format of the qsort_pivot array enables us to use the kernel + * heapsort function to place the median value in the middle. + * + * struct { + * xfarray_rec_t pivot; + * struct { + * xfarray_rec_t rec; (rounded up to 8 bytes) + * xfarray_idx_t idx; + * } qsort_pivot[QSORT_PIVOT_NR]; + * }; + * } + */ +}; + +/* Sort can be interrupted by a fatal signal. */ +#define XFARRAY_SORT_KILLABLE (1U << 0) + +int xfarray_sort(struct xfarray *array, xfarray_cmp_fn cmp_fn, + unsigned int flags); + +#endif /* __XFS_SCRUB_XFARRAY_H__ */ diff --git a/fs/xfs/scrub/xfile.c b/fs/xfs/scrub/xfile.c new file mode 100644 index 000000000000..d98e8e77c684 --- /dev/null +++ b/fs/xfs/scrub/xfile.c @@ -0,0 +1,420 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Copyright (C) 2018-2023 Oracle. All Rights Reserved. + * Author: Darrick J. Wong <djwong@kernel.org> + */ +#include "xfs.h" +#include "xfs_fs.h" +#include "xfs_shared.h" +#include "xfs_format.h" +#include "xfs_log_format.h" +#include "xfs_trans_resv.h" +#include "xfs_mount.h" +#include "xfs_format.h" +#include "scrub/xfile.h" +#include "scrub/xfarray.h" +#include "scrub/scrub.h" +#include "scrub/trace.h" +#include <linux/shmem_fs.h> + +/* + * Swappable Temporary Memory + * ========================== + * + * Online checking sometimes needs to be able to stage a large amount of data + * in memory. This information might not fit in the available memory and it + * doesn't all need to be accessible at all times. In other words, we want an + * indexed data buffer to store data that can be paged out. + * + * When CONFIG_TMPFS=y, shmemfs is enough of a filesystem to meet those + * requirements. Therefore, the xfile mechanism uses an unlinked shmem file to + * store our staging data. This file is not installed in the file descriptor + * table so that user programs cannot access the data, which means that the + * xfile must be freed with xfile_destroy. + * + * xfiles assume that the caller will handle all required concurrency + * management; standard vfs locks (freezer and inode) are not taken. Reads + * and writes are satisfied directly from the page cache. + * + * NOTE: The current shmemfs implementation has a quirk that in-kernel reads + * of a hole cause a page to be mapped into the file. If you are going to + * create a sparse xfile, please be careful about reading from uninitialized + * parts of the file. These pages are !Uptodate and will eventually be + * reclaimed if not written, but in the short term this boosts memory + * consumption. + */ + +/* + * xfiles must not be exposed to userspace and require upper layers to + * coordinate access to the one handle returned by the constructor, so + * establish a separate lock class for xfiles to avoid confusing lockdep. + */ +static struct lock_class_key xfile_i_mutex_key; + +/* + * Create an xfile of the given size. The description will be used in the + * trace output. + */ +int +xfile_create( + const char *description, + loff_t isize, + struct xfile **xfilep) +{ + struct inode *inode; + struct xfile *xf; + int error = -ENOMEM; + + xf = kmalloc(sizeof(struct xfile), XCHK_GFP_FLAGS); + if (!xf) + return -ENOMEM; + + xf->file = shmem_file_setup(description, isize, 0); + if (!xf->file) + goto out_xfile; + if (IS_ERR(xf->file)) { + error = PTR_ERR(xf->file); + goto out_xfile; + } + + /* + * We want a large sparse file that we can pread, pwrite, and seek. + * xfile users are responsible for keeping the xfile hidden away from + * all other callers, so we skip timestamp updates and security checks. + * Make the inode only accessible by root, just in case the xfile ever + * escapes. + */ + xf->file->f_mode |= FMODE_PREAD | FMODE_PWRITE | FMODE_NOCMTIME | + FMODE_LSEEK; + xf->file->f_flags |= O_RDWR | O_LARGEFILE | O_NOATIME; + inode = file_inode(xf->file); + inode->i_flags |= S_PRIVATE | S_NOCMTIME | S_NOATIME; + inode->i_mode &= ~0177; + inode->i_uid = GLOBAL_ROOT_UID; + inode->i_gid = GLOBAL_ROOT_GID; + + lockdep_set_class(&inode->i_rwsem, &xfile_i_mutex_key); + + trace_xfile_create(xf); + + *xfilep = xf; + return 0; +out_xfile: + kfree(xf); + return error; +} + +/* Close the file and release all resources. */ +void +xfile_destroy( + struct xfile *xf) +{ + struct inode *inode = file_inode(xf->file); + + trace_xfile_destroy(xf); + + lockdep_set_class(&inode->i_rwsem, &inode->i_sb->s_type->i_mutex_key); + fput(xf->file); + kfree(xf); +} + +/* + * Read a memory object directly from the xfile's page cache. Unlike regular + * pread, we return -E2BIG and -EFBIG for reads that are too large or at too + * high an offset, instead of truncating the read. Otherwise, we return + * bytes read or an error code, like regular pread. + */ +ssize_t +xfile_pread( + struct xfile *xf, + void *buf, + size_t count, + loff_t pos) +{ + struct inode *inode = file_inode(xf->file); + struct address_space *mapping = inode->i_mapping; + struct page *page = NULL; + ssize_t read = 0; + unsigned int pflags; + int error = 0; + + if (count > MAX_RW_COUNT) + return -E2BIG; + if (inode->i_sb->s_maxbytes - pos < count) + return -EFBIG; + + trace_xfile_pread(xf, pos, count); + + pflags = memalloc_nofs_save(); + while (count > 0) { + void *p, *kaddr; + unsigned int len; + + len = min_t(ssize_t, count, PAGE_SIZE - offset_in_page(pos)); + + /* + * In-kernel reads of a shmem file cause it to allocate a page + * if the mapping shows a hole. Therefore, if we hit ENOMEM + * we can continue by zeroing the caller's buffer. + */ + page = shmem_read_mapping_page_gfp(mapping, pos >> PAGE_SHIFT, + __GFP_NOWARN); + if (IS_ERR(page)) { + error = PTR_ERR(page); + if (error != -ENOMEM) + break; + + memset(buf, 0, len); + goto advance; + } + + if (PageUptodate(page)) { + /* + * xfile pages must never be mapped into userspace, so + * we skip the dcache flush. + */ + kaddr = kmap_local_page(page); + p = kaddr + offset_in_page(pos); + memcpy(buf, p, len); + kunmap_local(kaddr); + } else { + memset(buf, 0, len); + } + put_page(page); + +advance: + count -= len; + pos += len; + buf += len; + read += len; + } + memalloc_nofs_restore(pflags); + + if (read > 0) + return read; + return error; +} + +/* + * Write a memory object directly to the xfile's page cache. Unlike regular + * pwrite, we return -E2BIG and -EFBIG for writes that are too large or at too + * high an offset, instead of truncating the write. Otherwise, we return + * bytes written or an error code, like regular pwrite. + */ +ssize_t +xfile_pwrite( + struct xfile *xf, + const void *buf, + size_t count, + loff_t pos) +{ + struct inode *inode = file_inode(xf->file); + struct address_space *mapping = inode->i_mapping; + const struct address_space_operations *aops = mapping->a_ops; + struct page *page = NULL; + ssize_t written = 0; + unsigned int pflags; + int error = 0; + + if (count > MAX_RW_COUNT) + return -E2BIG; + if (inode->i_sb->s_maxbytes - pos < count) + return -EFBIG; + + trace_xfile_pwrite(xf, pos, count); + + pflags = memalloc_nofs_save(); + while (count > 0) { + void *fsdata = NULL; + void *p, *kaddr; + unsigned int len; + int ret; + + len = min_t(ssize_t, count, PAGE_SIZE - offset_in_page(pos)); + + /* + * We call write_begin directly here to avoid all the freezer + * protection lock-taking that happens in the normal path. + * shmem doesn't support fs freeze, but lockdep doesn't know + * that and will trip over that. + */ + error = aops->write_begin(NULL, mapping, pos, len, &page, + &fsdata); + if (error) + break; + + /* + * xfile pages must never be mapped into userspace, so we skip + * the dcache flush. If the page is not uptodate, zero it + * before writing data. + */ + kaddr = kmap_local_page(page); + if (!PageUptodate(page)) { + memset(kaddr, 0, PAGE_SIZE); + SetPageUptodate(page); + } + p = kaddr + offset_in_page(pos); + memcpy(p, buf, len); + kunmap_local(kaddr); + + ret = aops->write_end(NULL, mapping, pos, len, len, page, + fsdata); + if (ret < 0) { + error = ret; + break; + } + + written += ret; + if (ret != len) + break; + + count -= ret; + pos += ret; + buf += ret; + } + memalloc_nofs_restore(pflags); + + if (written > 0) + return written; + return error; +} + +/* Find the next written area in the xfile data for a given offset. */ +loff_t +xfile_seek_data( + struct xfile *xf, + loff_t pos) +{ + loff_t ret; + + ret = vfs_llseek(xf->file, pos, SEEK_DATA); + trace_xfile_seek_data(xf, pos, ret); + return ret; +} + +/* Query stat information for an xfile. */ +int +xfile_stat( + struct xfile *xf, + struct xfile_stat *statbuf) +{ + struct kstat ks; + int error; + + error = vfs_getattr_nosec(&xf->file->f_path, &ks, + STATX_SIZE | STATX_BLOCKS, AT_STATX_DONT_SYNC); + if (error) + return error; + + statbuf->size = ks.size; + statbuf->bytes = ks.blocks << SECTOR_SHIFT; + return 0; +} + +/* + * Grab the (locked) page for a memory object. The object cannot span a page + * boundary. Returns 0 (and a locked page) if successful, -ENOTBLK if we + * cannot grab the page, or the usual negative errno. + */ +int +xfile_get_page( + struct xfile *xf, + loff_t pos, + unsigned int len, + struct xfile_page *xfpage) +{ + struct inode *inode = file_inode(xf->file); + struct address_space *mapping = inode->i_mapping; + const struct address_space_operations *aops = mapping->a_ops; + struct page *page = NULL; + void *fsdata = NULL; + loff_t key = round_down(pos, PAGE_SIZE); + unsigned int pflags; + int error; + + if (inode->i_sb->s_maxbytes - pos < len) + return -ENOMEM; + if (len > PAGE_SIZE - offset_in_page(pos)) + return -ENOTBLK; + + trace_xfile_get_page(xf, pos, len); + + pflags = memalloc_nofs_save(); + + /* + * We call write_begin directly here to avoid all the freezer + * protection lock-taking that happens in the normal path. shmem + * doesn't support fs freeze, but lockdep doesn't know that and will + * trip over that. + */ + error = aops->write_begin(NULL, mapping, key, PAGE_SIZE, &page, + &fsdata); + if (error) + goto out_pflags; + + /* We got the page, so make sure we push out EOF. */ + if (i_size_read(inode) < pos + len) + i_size_write(inode, pos + len); + + /* + * If the page isn't up to date, fill it with zeroes before we hand it + * to the caller and make sure the backing store will hold on to them. + */ + if (!PageUptodate(page)) { + void *kaddr; + + kaddr = kmap_local_page(page); + memset(kaddr, 0, PAGE_SIZE); + kunmap_local(kaddr); + SetPageUptodate(page); + } + + /* + * Mark each page dirty so that the contents are written to some + * backing store when we drop this buffer, and take an extra reference + * to prevent the xfile page from being swapped or removed from the + * page cache by reclaim if the caller unlocks the page. + */ + set_page_dirty(page); + get_page(page); + + xfpage->page = page; + xfpage->fsdata = fsdata; + xfpage->pos = key; +out_pflags: + memalloc_nofs_restore(pflags); + return error; +} + +/* + * Release the (locked) page for a memory object. Returns 0 or a negative + * errno. + */ +int +xfile_put_page( + struct xfile *xf, + struct xfile_page *xfpage) +{ + struct inode *inode = file_inode(xf->file); + struct address_space *mapping = inode->i_mapping; + const struct address_space_operations *aops = mapping->a_ops; + unsigned int pflags; + int ret; + + trace_xfile_put_page(xf, xfpage->pos, PAGE_SIZE); + + /* Give back the reference that we took in xfile_get_page. */ + put_page(xfpage->page); + + pflags = memalloc_nofs_save(); + ret = aops->write_end(NULL, mapping, xfpage->pos, PAGE_SIZE, PAGE_SIZE, + xfpage->page, xfpage->fsdata); + memalloc_nofs_restore(pflags); + memset(xfpage, 0, sizeof(struct xfile_page)); + + if (ret < 0) + return ret; + if (ret != PAGE_SIZE) + return -EIO; + return 0; +} diff --git a/fs/xfs/scrub/xfile.h b/fs/xfs/scrub/xfile.h new file mode 100644 index 000000000000..d56643b0f429 --- /dev/null +++ b/fs/xfs/scrub/xfile.h @@ -0,0 +1,77 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +/* + * Copyright (C) 2018-2023 Oracle. All Rights Reserved. + * Author: Darrick J. Wong <djwong@kernel.org> + */ +#ifndef __XFS_SCRUB_XFILE_H__ +#define __XFS_SCRUB_XFILE_H__ + +struct xfile_page { + struct page *page; + void *fsdata; + loff_t pos; +}; + +static inline bool xfile_page_cached(const struct xfile_page *xfpage) +{ + return xfpage->page != NULL; +} + +static inline pgoff_t xfile_page_index(const struct xfile_page *xfpage) +{ + return xfpage->page->index; +} + +struct xfile { + struct file *file; +}; + +int xfile_create(const char *description, loff_t isize, struct xfile **xfilep); +void xfile_destroy(struct xfile *xf); + +ssize_t xfile_pread(struct xfile *xf, void *buf, size_t count, loff_t pos); +ssize_t xfile_pwrite(struct xfile *xf, const void *buf, size_t count, + loff_t pos); + +/* + * Load an object. Since we're treating this file as "memory", any error or + * short IO is treated as a failure to allocate memory. + */ +static inline int +xfile_obj_load(struct xfile *xf, void *buf, size_t count, loff_t pos) +{ + ssize_t ret = xfile_pread(xf, buf, count, pos); + + if (ret < 0 || ret != count) + return -ENOMEM; + return 0; +} + +/* + * Store an object. Since we're treating this file as "memory", any error or + * short IO is treated as a failure to allocate memory. + */ +static inline int +xfile_obj_store(struct xfile *xf, const void *buf, size_t count, loff_t pos) +{ + ssize_t ret = xfile_pwrite(xf, buf, count, pos); + + if (ret < 0 || ret != count) + return -ENOMEM; + return 0; +} + +loff_t xfile_seek_data(struct xfile *xf, loff_t pos); + +struct xfile_stat { + loff_t size; + unsigned long long bytes; +}; + +int xfile_stat(struct xfile *xf, struct xfile_stat *statbuf); + +int xfile_get_page(struct xfile *xf, loff_t offset, unsigned int len, + struct xfile_page *xbuf); +int xfile_put_page(struct xfile *xf, struct xfile_page *xbuf); + +#endif /* __XFS_SCRUB_XFILE_H__ */ diff --git a/fs/xfs/xfs_acl.c b/fs/xfs/xfs_acl.c index 791db7d9c849..6b840301817a 100644 --- a/fs/xfs/xfs_acl.c +++ b/fs/xfs/xfs_acl.c @@ -233,7 +233,7 @@ xfs_acl_set_mode( xfs_ilock(ip, XFS_ILOCK_EXCL); xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL); inode->i_mode = mode; - inode->i_ctime = current_time(inode); + inode_set_ctime_current(inode); xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE); if (xfs_has_wsync(mp)) diff --git a/fs/xfs/xfs_aops.c b/fs/xfs/xfs_aops.c index 451942fb38ec..465d7630bb21 100644 --- a/fs/xfs/xfs_aops.c +++ b/fs/xfs/xfs_aops.c @@ -478,7 +478,7 @@ xfs_discard_folio( folio, ip->i_ino, pos); /* - * The end of the punch range is always the offset of the the first + * The end of the punch range is always the offset of the first * byte of the next folio. Hence the end offset is only dependent on the * folio itself and not the start offset that is passed in. */ @@ -578,7 +578,7 @@ const struct address_space_operations xfs_address_space_operations = { .read_folio = xfs_vm_read_folio, .readahead = xfs_vm_readahead, .writepages = xfs_vm_writepages, - .dirty_folio = filemap_dirty_folio, + .dirty_folio = iomap_dirty_folio, .release_folio = iomap_release_folio, .invalidate_folio = iomap_invalidate_folio, .bmap = xfs_vm_bmap, diff --git a/fs/xfs/xfs_bmap_util.c b/fs/xfs/xfs_bmap_util.c index fbb675563208..fcefab687285 100644 --- a/fs/xfs/xfs_bmap_util.c +++ b/fs/xfs/xfs_bmap_util.c @@ -1644,6 +1644,7 @@ xfs_swap_extents( uint64_t f; int resblks = 0; unsigned int flags = 0; + struct timespec64 ctime; /* * Lock the inodes against other IO, page faults and truncate to @@ -1756,8 +1757,9 @@ xfs_swap_extents( * process that the file was not changed out from * under it. */ - if ((sbp->bs_ctime.tv_sec != VFS_I(ip)->i_ctime.tv_sec) || - (sbp->bs_ctime.tv_nsec != VFS_I(ip)->i_ctime.tv_nsec) || + ctime = inode_get_ctime(VFS_I(ip)); + if ((sbp->bs_ctime.tv_sec != ctime.tv_sec) || + (sbp->bs_ctime.tv_nsec != ctime.tv_nsec) || (sbp->bs_mtime.tv_sec != VFS_I(ip)->i_mtime.tv_sec) || (sbp->bs_mtime.tv_nsec != VFS_I(ip)->i_mtime.tv_nsec)) { error = -EBUSY; diff --git a/fs/xfs/xfs_buf.c b/fs/xfs/xfs_buf.c index 15d1e5a7c2d3..c1ece4a08ff4 100644 --- a/fs/xfs/xfs_buf.c +++ b/fs/xfs/xfs_buf.c @@ -481,7 +481,8 @@ _xfs_buf_obj_cmp( * reallocating a busy extent. Skip this buffer and * continue searching for an exact match. */ - ASSERT(bp->b_flags & XBF_STALE); + if (!(map->bm_flags & XBM_LIVESCAN)) + ASSERT(bp->b_flags & XBF_STALE); return 1; } return 0; @@ -559,6 +560,10 @@ xfs_buf_find_lock( * intact here. */ if (bp->b_flags & XBF_STALE) { + if (flags & XBF_LIVESCAN) { + xfs_buf_unlock(bp); + return -ENOENT; + } ASSERT((bp->b_flags & _XBF_DELWRI_Q) == 0); bp->b_flags &= _XBF_KMEM | _XBF_PAGES; bp->b_ops = NULL; @@ -682,6 +687,8 @@ xfs_buf_get_map( int error; int i; + if (flags & XBF_LIVESCAN) + cmap.bm_flags |= XBM_LIVESCAN; for (i = 0; i < nmaps; i++) cmap.bm_len += map[i].bm_len; @@ -1938,14 +1945,17 @@ void xfs_free_buftarg( struct xfs_buftarg *btp) { + struct block_device *bdev = btp->bt_bdev; + unregister_shrinker(&btp->bt_shrinker); ASSERT(percpu_counter_sum(&btp->bt_io_count) == 0); percpu_counter_destroy(&btp->bt_io_count); list_lru_destroy(&btp->bt_lru); - blkdev_issue_flush(btp->bt_bdev); - invalidate_bdev(btp->bt_bdev); fs_put_dax(btp->bt_daxdev, btp->bt_mount); + /* the main block device is closed by kill_block_super */ + if (bdev != btp->bt_mount->m_super->s_bdev) + blkdev_put(bdev, btp->bt_mount->m_super); kmem_free(btp); } diff --git a/fs/xfs/xfs_buf.h b/fs/xfs/xfs_buf.h index 549c60942208..df8f47953bb4 100644 --- a/fs/xfs/xfs_buf.h +++ b/fs/xfs/xfs_buf.h @@ -44,6 +44,11 @@ struct xfs_buf; #define _XBF_DELWRI_Q (1u << 22)/* buffer on a delwri queue */ /* flags used only as arguments to access routines */ +/* + * Online fsck is scanning the buffer cache for live buffers. Do not warn + * about length mismatches during lookups and do not return stale buffers. + */ +#define XBF_LIVESCAN (1u << 28) #define XBF_INCORE (1u << 29)/* lookup only, return if found in cache */ #define XBF_TRYLOCK (1u << 30)/* lock requested, but do not wait */ #define XBF_UNMAPPED (1u << 31)/* do not map the buffer */ @@ -67,6 +72,7 @@ typedef unsigned int xfs_buf_flags_t; { _XBF_KMEM, "KMEM" }, \ { _XBF_DELWRI_Q, "DELWRI_Q" }, \ /* The following interface flags should never be set */ \ + { XBF_LIVESCAN, "LIVESCAN" }, \ { XBF_INCORE, "INCORE" }, \ { XBF_TRYLOCK, "TRYLOCK" }, \ { XBF_UNMAPPED, "UNMAPPED" } @@ -114,8 +120,15 @@ typedef struct xfs_buftarg { struct xfs_buf_map { xfs_daddr_t bm_bn; /* block number for I/O */ int bm_len; /* size of I/O */ + unsigned int bm_flags; }; +/* + * Online fsck is scanning the buffer cache for live buffers. Do not warn + * about length mismatches during lookups and do not return stale buffers. + */ +#define XBM_LIVESCAN (1U << 0) + #define DEFINE_SINGLE_BUF_MAP(map, blkno, numblk) \ struct xfs_buf_map (map) = { .bm_bn = (blkno), .bm_len = (numblk) }; diff --git a/fs/xfs/xfs_dquot.c b/fs/xfs/xfs_dquot.c index 7f071757f278..ac6ba646624d 100644 --- a/fs/xfs/xfs_dquot.c +++ b/fs/xfs/xfs_dquot.c @@ -1386,7 +1386,7 @@ xfs_qm_dqiterate( return error; error = iter_fn(dq, type, priv); - id = dq->q_id; + id = dq->q_id + 1; xfs_qm_dqput(dq); } while (error == 0 && id != 0); diff --git a/fs/xfs/xfs_icache.c b/fs/xfs/xfs_icache.c index 453890942d9f..e541f5c0bc25 100644 --- a/fs/xfs/xfs_icache.c +++ b/fs/xfs/xfs_icache.c @@ -803,44 +803,6 @@ out_error_or_again: } /* - * "Is this a cached inode that's also allocated?" - * - * Look up an inode by number in the given file system. If the inode is - * in cache and isn't in purgatory, return 1 if the inode is allocated - * and 0 if it is not. For all other cases (not in cache, being torn - * down, etc.), return a negative error code. - * - * The caller has to prevent inode allocation and freeing activity, - * presumably by locking the AGI buffer. This is to ensure that an - * inode cannot transition from allocated to freed until the caller is - * ready to allow that. If the inode is in an intermediate state (new, - * reclaimable, or being reclaimed), -EAGAIN will be returned; if the - * inode is not in the cache, -ENOENT will be returned. The caller must - * deal with these scenarios appropriately. - * - * This is a specialized use case for the online scrubber; if you're - * reading this, you probably want xfs_iget. - */ -int -xfs_icache_inode_is_allocated( - struct xfs_mount *mp, - struct xfs_trans *tp, - xfs_ino_t ino, - bool *inuse) -{ - struct xfs_inode *ip; - int error; - - error = xfs_iget(mp, tp, ino, XFS_IGET_INCORE, 0, &ip); - if (error) - return error; - - *inuse = !!(VFS_I(ip)->i_mode); - xfs_irele(ip); - return 0; -} - -/* * Grab the inode for reclaim exclusively. * * We have found this inode via a lookup under RCU, so the inode may have diff --git a/fs/xfs/xfs_icache.h b/fs/xfs/xfs_icache.h index 1dcdcb23796e..2fa6f2e09d07 100644 --- a/fs/xfs/xfs_icache.h +++ b/fs/xfs/xfs_icache.h @@ -71,10 +71,6 @@ void xfs_inode_set_cowblocks_tag(struct xfs_inode *ip); void xfs_inode_clear_cowblocks_tag(struct xfs_inode *ip); void xfs_blockgc_worker(struct work_struct *work); - -int xfs_icache_inode_is_allocated(struct xfs_mount *mp, struct xfs_trans *tp, - xfs_ino_t ino, bool *inuse); - void xfs_blockgc_stop(struct xfs_mount *mp); void xfs_blockgc_start(struct xfs_mount *mp); diff --git a/fs/xfs/xfs_inode.c b/fs/xfs/xfs_inode.c index 9e62cc500140..360fe83a334f 100644 --- a/fs/xfs/xfs_inode.c +++ b/fs/xfs/xfs_inode.c @@ -843,10 +843,9 @@ xfs_init_new_inode( ip->i_df.if_nextents = 0; ASSERT(ip->i_nblocks == 0); - tv = current_time(inode); + tv = inode_set_ctime_current(inode); inode->i_mtime = tv; inode->i_atime = tv; - inode->i_ctime = tv; ip->i_extsize = 0; ip->i_diflags = 0; diff --git a/fs/xfs/xfs_inode_item.c b/fs/xfs/xfs_inode_item.c index 91c847a84e10..127b2410eb20 100644 --- a/fs/xfs/xfs_inode_item.c +++ b/fs/xfs/xfs_inode_item.c @@ -528,7 +528,7 @@ xfs_inode_to_log_dinode( memset(to->di_pad3, 0, sizeof(to->di_pad3)); to->di_atime = xfs_inode_to_log_dinode_ts(ip, inode->i_atime); to->di_mtime = xfs_inode_to_log_dinode_ts(ip, inode->i_mtime); - to->di_ctime = xfs_inode_to_log_dinode_ts(ip, inode->i_ctime); + to->di_ctime = xfs_inode_to_log_dinode_ts(ip, inode_get_ctime(inode)); to->di_nlink = inode->i_nlink; to->di_gen = inode->i_generation; to->di_mode = inode->i_mode; diff --git a/fs/xfs/xfs_iops.c b/fs/xfs/xfs_iops.c index 24718adb3c16..2ededd3f6b8c 100644 --- a/fs/xfs/xfs_iops.c +++ b/fs/xfs/xfs_iops.c @@ -573,10 +573,10 @@ xfs_vn_getattr( stat->gid = vfsgid_into_kgid(vfsgid); stat->ino = ip->i_ino; stat->atime = inode->i_atime; - stat->mtime = inode->i_mtime; - stat->ctime = inode->i_ctime; stat->blocks = XFS_FSB_TO_BB(mp, ip->i_nblocks + ip->i_delayed_blks); + fill_mg_cmtime(stat, request_mask, inode); + if (xfs_has_v3inodes(mp)) { if (request_mask & STATX_BTIME) { stat->result_mask |= STATX_BTIME; @@ -917,7 +917,7 @@ xfs_setattr_size( if (newsize != oldsize && !(iattr->ia_valid & (ATTR_CTIME | ATTR_MTIME))) { iattr->ia_ctime = iattr->ia_mtime = - current_time(inode); + current_mgtime(inode); iattr->ia_valid |= ATTR_CTIME | ATTR_MTIME; } @@ -1029,7 +1029,6 @@ xfs_vn_setattr( STATIC int xfs_vn_update_time( struct inode *inode, - struct timespec64 *now, int flags) { struct xfs_inode *ip = XFS_I(inode); @@ -1037,13 +1036,16 @@ xfs_vn_update_time( int log_flags = XFS_ILOG_TIMESTAMP; struct xfs_trans *tp; int error; + struct timespec64 now; trace_xfs_update_time(ip); if (inode->i_sb->s_flags & SB_LAZYTIME) { if (!((flags & S_VERSION) && - inode_maybe_inc_iversion(inode, false))) - return generic_update_time(inode, now, flags); + inode_maybe_inc_iversion(inode, false))) { + generic_update_time(inode, flags); + return 0; + } /* Capture the iversion update that just occurred */ log_flags |= XFS_ILOG_CORE; @@ -1054,12 +1056,15 @@ xfs_vn_update_time( return error; xfs_ilock(ip, XFS_ILOCK_EXCL); - if (flags & S_CTIME) - inode->i_ctime = *now; + if (flags & (S_CTIME|S_MTIME)) + now = inode_set_ctime_current(inode); + else + now = current_time(inode); + if (flags & S_MTIME) - inode->i_mtime = *now; + inode->i_mtime = now; if (flags & S_ATIME) - inode->i_atime = *now; + inode->i_atime = now; xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL); xfs_trans_log_inode(tp, ip, log_flags); diff --git a/fs/xfs/xfs_itable.c b/fs/xfs/xfs_itable.c index f225413a993c..c2093cb56092 100644 --- a/fs/xfs/xfs_itable.c +++ b/fs/xfs/xfs_itable.c @@ -100,8 +100,8 @@ xfs_bulkstat_one_int( buf->bs_atime_nsec = inode->i_atime.tv_nsec; buf->bs_mtime = inode->i_mtime.tv_sec; buf->bs_mtime_nsec = inode->i_mtime.tv_nsec; - buf->bs_ctime = inode->i_ctime.tv_sec; - buf->bs_ctime_nsec = inode->i_ctime.tv_nsec; + buf->bs_ctime = inode_get_ctime(inode).tv_sec; + buf->bs_ctime_nsec = inode_get_ctime(inode).tv_nsec; buf->bs_gen = inode->i_generation; buf->bs_mode = inode->i_mode; diff --git a/fs/xfs/xfs_linux.h b/fs/xfs/xfs_linux.h index 74dcb05069e8..e9d317a3dafe 100644 --- a/fs/xfs/xfs_linux.h +++ b/fs/xfs/xfs_linux.h @@ -63,6 +63,7 @@ typedef __u32 xfs_nlink_t; #include <linux/rhashtable.h> #include <linux/xattr.h> #include <linux/mnt_idmapping.h> +#include <linux/debugfs.h> #include <asm/page.h> #include <asm/div64.h> diff --git a/fs/xfs/xfs_mount.c b/fs/xfs/xfs_mount.c index fb87ffb48f7f..0a0fd19573d8 100644 --- a/fs/xfs/xfs_mount.c +++ b/fs/xfs/xfs_mount.c @@ -34,6 +34,7 @@ #include "xfs_health.h" #include "xfs_trace.h" #include "xfs_ag.h" +#include "scrub/stats.h" static DEFINE_MUTEX(xfs_uuid_table_mutex); static int xfs_uuid_table_size; @@ -716,9 +717,11 @@ xfs_mountfs( if (error) goto out_remove_sysfs; + xchk_stats_register(mp->m_scrub_stats, mp->m_debugfs); + error = xfs_error_sysfs_init(mp); if (error) - goto out_del_stats; + goto out_remove_scrub_stats; error = xfs_errortag_init(mp); if (error) @@ -1033,7 +1036,8 @@ xfs_mountfs( xfs_errortag_del(mp); out_remove_error_sysfs: xfs_error_sysfs_del(mp); - out_del_stats: + out_remove_scrub_stats: + xchk_stats_unregister(mp->m_scrub_stats); xfs_sysfs_del(&mp->m_stats.xs_kobj); out_remove_sysfs: xfs_sysfs_del(&mp->m_kobj); @@ -1105,6 +1109,7 @@ xfs_unmountfs( xfs_errortag_del(mp); xfs_error_sysfs_del(mp); + xchk_stats_unregister(mp->m_scrub_stats); xfs_sysfs_del(&mp->m_stats.xs_kobj); xfs_sysfs_del(&mp->m_kobj); } diff --git a/fs/xfs/xfs_mount.h b/fs/xfs/xfs_mount.h index e2866e7fa60c..a25eece3be2b 100644 --- a/fs/xfs/xfs_mount.h +++ b/fs/xfs/xfs_mount.h @@ -208,11 +208,15 @@ typedef struct xfs_mount { uint64_t m_resblks_avail;/* available reserved blocks */ uint64_t m_resblks_save; /* reserved blks @ remount,ro */ struct delayed_work m_reclaim_work; /* background inode reclaim */ + struct dentry *m_debugfs; /* debugfs parent */ struct xfs_kobj m_kobj; struct xfs_kobj m_error_kobj; struct xfs_kobj m_error_meta_kobj; struct xfs_error_cfg m_error_cfg[XFS_ERR_CLASS_MAX][XFS_ERR_ERRNO_MAX]; struct xstats m_stats; /* per-fs stats */ +#ifdef CONFIG_XFS_ONLINE_SCRUB_STATS + struct xchk_stats *m_scrub_stats; +#endif xfs_agnumber_t m_agfrotor; /* last ag where space found */ atomic_t m_agirotor; /* last ag dir inode alloced */ diff --git a/fs/xfs/xfs_super.c b/fs/xfs/xfs_super.c index 818510243130..1f77014c6e1a 100644 --- a/fs/xfs/xfs_super.c +++ b/fs/xfs/xfs_super.c @@ -42,6 +42,7 @@ #include "xfs_xattr.h" #include "xfs_iunlink_item.h" #include "xfs_dahash_test.h" +#include "scrub/stats.h" #include <linux/magic.h> #include <linux/fs_context.h> @@ -49,6 +50,7 @@ static const struct super_operations xfs_super_operations; +static struct dentry *xfs_debugfs; /* top-level xfs debugfs dir */ static struct kset *xfs_kset; /* top-level xfs sysfs dir */ #ifdef DEBUG static struct xfs_kobj xfs_dbg_kobj; /* global debug sysfs attrs */ @@ -377,17 +379,6 @@ disable_dax: return 0; } -static void -xfs_bdev_mark_dead( - struct block_device *bdev) -{ - xfs_force_shutdown(bdev->bd_holder, SHUTDOWN_DEVICE_REMOVED); -} - -static const struct blk_holder_ops xfs_holder_ops = { - .mark_dead = xfs_bdev_mark_dead, -}; - STATIC int xfs_blkdev_get( xfs_mount_t *mp, @@ -396,8 +387,8 @@ xfs_blkdev_get( { int error = 0; - *bdevp = blkdev_get_by_path(name, BLK_OPEN_READ | BLK_OPEN_WRITE, mp, - &xfs_holder_ops); + *bdevp = blkdev_get_by_path(name, BLK_OPEN_READ | BLK_OPEN_WRITE, + mp->m_super, &fs_holder_ops); if (IS_ERR(*bdevp)) { error = PTR_ERR(*bdevp); xfs_warn(mp, "Invalid device [%s], error=%d", name, error); @@ -407,31 +398,45 @@ xfs_blkdev_get( } STATIC void -xfs_blkdev_put( - struct xfs_mount *mp, - struct block_device *bdev) -{ - if (bdev) - blkdev_put(bdev, mp); -} - -STATIC void -xfs_close_devices( +xfs_shutdown_devices( struct xfs_mount *mp) { + /* + * Udev is triggered whenever anyone closes a block device or unmounts + * a file systemm on a block device. + * The default udev rules invoke blkid to read the fs super and create + * symlinks to the bdev under /dev/disk. For this, it uses buffered + * reads through the page cache. + * + * xfs_db also uses buffered reads to examine metadata. There is no + * coordination between xfs_db and udev, which means that they can run + * concurrently. Note there is no coordination between the kernel and + * blkid either. + * + * On a system with 64k pages, the page cache can cache the superblock + * and the root inode (and hence the root directory) with the same 64k + * page. If udev spawns blkid after the mkfs and the system is busy + * enough that it is still running when xfs_db starts up, they'll both + * read from the same page in the pagecache. + * + * The unmount writes updated inode metadata to disk directly. The XFS + * buffer cache does not use the bdev pagecache, so it needs to + * invalidate that pagecache on unmount. If the above scenario occurs, + * the pagecache no longer reflects what's on disk, xfs_db reads the + * stale metadata, and fails to find /a. Most of the time this succeeds + * because closing a bdev invalidates the page cache, but when processes + * race, everyone loses. + */ if (mp->m_logdev_targp && mp->m_logdev_targp != mp->m_ddev_targp) { - struct block_device *logdev = mp->m_logdev_targp->bt_bdev; - - xfs_free_buftarg(mp->m_logdev_targp); - xfs_blkdev_put(mp, logdev); + blkdev_issue_flush(mp->m_logdev_targp->bt_bdev); + invalidate_bdev(mp->m_logdev_targp->bt_bdev); } if (mp->m_rtdev_targp) { - struct block_device *rtdev = mp->m_rtdev_targp->bt_bdev; - - xfs_free_buftarg(mp->m_rtdev_targp); - xfs_blkdev_put(mp, rtdev); + blkdev_issue_flush(mp->m_rtdev_targp->bt_bdev); + invalidate_bdev(mp->m_rtdev_targp->bt_bdev); } - xfs_free_buftarg(mp->m_ddev_targp); + blkdev_issue_flush(mp->m_ddev_targp->bt_bdev); + invalidate_bdev(mp->m_ddev_targp->bt_bdev); } /* @@ -448,17 +453,24 @@ STATIC int xfs_open_devices( struct xfs_mount *mp) { - struct block_device *ddev = mp->m_super->s_bdev; + struct super_block *sb = mp->m_super; + struct block_device *ddev = sb->s_bdev; struct block_device *logdev = NULL, *rtdev = NULL; int error; /* + * blkdev_put() can't be called under s_umount, see the comment + * in get_tree_bdev() for more details + */ + up_write(&sb->s_umount); + + /* * Open real time and log devices - order is important. */ if (mp->m_logname) { error = xfs_blkdev_get(mp, mp->m_logname, &logdev); if (error) - return error; + goto out_relock; } if (mp->m_rtname) { @@ -496,7 +508,10 @@ xfs_open_devices( mp->m_logdev_targp = mp->m_ddev_targp; } - return 0; + error = 0; +out_relock: + down_write(&sb->s_umount); + return error; out_free_rtdev_targ: if (mp->m_rtdev_targp) @@ -504,11 +519,12 @@ xfs_open_devices( out_free_ddev_targ: xfs_free_buftarg(mp->m_ddev_targp); out_close_rtdev: - xfs_blkdev_put(mp, rtdev); + if (rtdev) + blkdev_put(rtdev, sb); out_close_logdev: if (logdev && logdev != ddev) - xfs_blkdev_put(mp, logdev); - return error; + blkdev_put(logdev, sb); + goto out_relock; } /* @@ -758,6 +774,18 @@ static void xfs_mount_free( struct xfs_mount *mp) { + /* + * Free the buftargs here because blkdev_put needs to be called outside + * of sb->s_umount, which is held around the call to ->put_super. + */ + if (mp->m_logdev_targp && mp->m_logdev_targp != mp->m_ddev_targp) + xfs_free_buftarg(mp->m_logdev_targp); + if (mp->m_rtdev_targp) + xfs_free_buftarg(mp->m_rtdev_targp); + if (mp->m_ddev_targp) + xfs_free_buftarg(mp->m_ddev_targp); + + debugfs_remove(mp->m_debugfs); kfree(mp->m_rtname); kfree(mp->m_logname); kmem_free(mp); @@ -1133,24 +1161,18 @@ xfs_fs_put_super( { struct xfs_mount *mp = XFS_M(sb); - /* if ->fill_super failed, we have no mount to tear down */ - if (!sb->s_fs_info) - return; - xfs_notice(mp, "Unmounting Filesystem %pU", &mp->m_sb.sb_uuid); xfs_filestream_unmount(mp); xfs_unmountfs(mp); xfs_freesb(mp); + xchk_mount_stats_free(mp); free_percpu(mp->m_stats.xs_stats); xfs_mount_list_del(mp); xfs_inodegc_free_percpu(mp); xfs_destroy_percpu_counters(mp); xfs_destroy_mount_workqueues(mp); - xfs_close_devices(mp); - - sb->s_fs_info = NULL; - xfs_mount_free(mp); + xfs_shutdown_devices(mp); } static long @@ -1479,6 +1501,21 @@ xfs_fs_validate_params( return 0; } +struct dentry * +xfs_debugfs_mkdir( + const char *name, + struct dentry *parent) +{ + struct dentry *child; + + /* Apparently we're expected to ignore error returns?? */ + child = debugfs_create_dir(name, parent); + if (IS_ERR(child)) + return NULL; + + return child; +} + static int xfs_fs_fill_super( struct super_block *sb, @@ -1492,7 +1529,7 @@ xfs_fs_fill_super( error = xfs_fs_validate_params(mp); if (error) - goto out_free_names; + return error; sb_min_blocksize(sb, BBSIZE); sb->s_xattr = xfs_xattr_handlers; @@ -1519,11 +1556,18 @@ xfs_fs_fill_super( error = xfs_open_devices(mp); if (error) - goto out_free_names; + return error; + + if (xfs_debugfs) { + mp->m_debugfs = xfs_debugfs_mkdir(mp->m_super->s_id, + xfs_debugfs); + } else { + mp->m_debugfs = NULL; + } error = xfs_init_mount_workqueues(mp); if (error) - goto out_close_devices; + goto out_shutdown_devices; error = xfs_init_percpu_counters(mp); if (error) @@ -1547,10 +1591,14 @@ xfs_fs_fill_super( goto out_destroy_inodegc; } - error = xfs_readsb(mp, flags); + error = xchk_mount_stats_alloc(mp); if (error) goto out_free_stats; + error = xfs_readsb(mp, flags); + if (error) + goto out_free_scrub_stats; + error = xfs_finish_flags(mp); if (error) goto out_free_sb; @@ -1728,6 +1776,8 @@ xfs_fs_fill_super( xfs_filestream_unmount(mp); out_free_sb: xfs_freesb(mp); + out_free_scrub_stats: + xchk_mount_stats_free(mp); out_free_stats: free_percpu(mp->m_stats.xs_stats); out_destroy_inodegc: @@ -1737,11 +1787,8 @@ xfs_fs_fill_super( xfs_destroy_percpu_counters(mp); out_destroy_workqueues: xfs_destroy_mount_workqueues(mp); - out_close_devices: - xfs_close_devices(mp); - out_free_names: - sb->s_fs_info = NULL; - xfs_mount_free(mp); + out_shutdown_devices: + xfs_shutdown_devices(mp); return error; out_unmount: @@ -1934,7 +1981,8 @@ xfs_fs_reconfigure( return 0; } -static void xfs_fs_free( +static void +xfs_fs_free( struct fs_context *fc) { struct xfs_mount *mp = fc->s_fs_info; @@ -2003,13 +2051,21 @@ static int xfs_init_fs_context( return 0; } +static void +xfs_kill_sb( + struct super_block *sb) +{ + kill_block_super(sb); + xfs_mount_free(XFS_M(sb)); +} + static struct file_system_type xfs_fs_type = { .owner = THIS_MODULE, .name = "xfs", .init_fs_context = xfs_init_fs_context, .parameters = xfs_fs_parameters, - .kill_sb = kill_block_super, - .fs_flags = FS_REQUIRES_DEV | FS_ALLOW_IDMAP, + .kill_sb = xfs_kill_sb, + .fs_flags = FS_REQUIRES_DEV | FS_ALLOW_IDMAP | FS_MGTIME, }; MODULE_ALIAS_FS("xfs"); @@ -2353,10 +2409,12 @@ init_xfs_fs(void) if (error) goto out_cleanup_procfs; + xfs_debugfs = xfs_debugfs_mkdir("xfs", NULL); + xfs_kset = kset_create_and_add("xfs", NULL, fs_kobj); if (!xfs_kset) { error = -ENOMEM; - goto out_sysctl_unregister; + goto out_debugfs_unregister; } xfsstats.xs_kobj.kobject.kset = xfs_kset; @@ -2372,11 +2430,15 @@ init_xfs_fs(void) if (error) goto out_free_stats; + error = xchk_global_stats_setup(xfs_debugfs); + if (error) + goto out_remove_stats_kobj; + #ifdef DEBUG xfs_dbg_kobj.kobject.kset = xfs_kset; error = xfs_sysfs_init(&xfs_dbg_kobj, &xfs_dbg_ktype, NULL, "debug"); if (error) - goto out_remove_stats_kobj; + goto out_remove_scrub_stats; #endif error = xfs_qm_init(); @@ -2393,14 +2455,17 @@ init_xfs_fs(void) out_remove_dbg_kobj: #ifdef DEBUG xfs_sysfs_del(&xfs_dbg_kobj); - out_remove_stats_kobj: + out_remove_scrub_stats: #endif + xchk_global_stats_teardown(); + out_remove_stats_kobj: xfs_sysfs_del(&xfsstats.xs_kobj); out_free_stats: free_percpu(xfsstats.xs_stats); out_kset_unregister: kset_unregister(xfs_kset); - out_sysctl_unregister: + out_debugfs_unregister: + debugfs_remove(xfs_debugfs); xfs_sysctl_unregister(); out_cleanup_procfs: xfs_cleanup_procfs(); @@ -2424,9 +2489,11 @@ exit_xfs_fs(void) #ifdef DEBUG xfs_sysfs_del(&xfs_dbg_kobj); #endif + xchk_global_stats_teardown(); xfs_sysfs_del(&xfsstats.xs_kobj); free_percpu(xfsstats.xs_stats); kset_unregister(xfs_kset); + debugfs_remove(xfs_debugfs); xfs_sysctl_unregister(); xfs_cleanup_procfs(); xfs_mru_cache_uninit(); diff --git a/fs/xfs/xfs_super.h b/fs/xfs/xfs_super.h index 364e2c2648a8..302e6e5d6c7e 100644 --- a/fs/xfs/xfs_super.h +++ b/fs/xfs/xfs_super.h @@ -100,4 +100,6 @@ extern struct workqueue_struct *xfs_discard_wq; #define XFS_M(sb) ((struct xfs_mount *)((sb)->s_fs_info)) +struct dentry *xfs_debugfs_mkdir(const char *name, struct dentry *parent); + #endif /* __XFS_SUPER_H__ */ diff --git a/fs/xfs/xfs_trace.h b/fs/xfs/xfs_trace.h index fd789e00dfd6..902c7f67a117 100644 --- a/fs/xfs/xfs_trace.h +++ b/fs/xfs/xfs_trace.h @@ -22,6 +22,9 @@ * daddr: physical block number in 512b blocks * bbcount: number of blocks in a physical extent, in 512b blocks * + * rtx: physical rt extent number for extent mappings + * rtxcount: number of rt extents in an extent mapping + * * owner: reverse-mapping owner, usually inodes * * fileoff: file offset, in fs blocks diff --git a/fs/zonefs/file.c b/fs/zonefs/file.c index 92c9aaae3663..b2c9b35df8f7 100644 --- a/fs/zonefs/file.c +++ b/fs/zonefs/file.c @@ -175,7 +175,7 @@ const struct address_space_operations zonefs_file_aops = { .read_folio = zonefs_read_folio, .readahead = zonefs_readahead, .writepages = zonefs_writepages, - .dirty_folio = filemap_dirty_folio, + .dirty_folio = iomap_dirty_folio, .release_folio = iomap_release_folio, .invalidate_folio = iomap_invalidate_folio, .migrate_folio = filemap_migrate_folio, @@ -341,77 +341,6 @@ static loff_t zonefs_file_llseek(struct file *file, loff_t offset, int whence) return generic_file_llseek_size(file, offset, whence, isize, isize); } -struct zonefs_zone_append_bio { - /* The target inode of the BIO */ - struct inode *inode; - - /* For sync writes, the target append write offset */ - u64 append_offset; - - /* - * This member must come last, bio_alloc_bioset will allocate enough - * bytes for entire zonefs_bio but relies on bio being last. - */ - struct bio bio; -}; - -static inline struct zonefs_zone_append_bio * -zonefs_zone_append_bio(struct bio *bio) -{ - return container_of(bio, struct zonefs_zone_append_bio, bio); -} - -static void zonefs_file_zone_append_dio_bio_end_io(struct bio *bio) -{ - struct zonefs_zone_append_bio *za_bio = zonefs_zone_append_bio(bio); - struct zonefs_zone *z = zonefs_inode_zone(za_bio->inode); - sector_t za_sector; - - if (bio->bi_status != BLK_STS_OK) - goto bio_end; - - /* - * If the file zone was written underneath the file system, the zone - * append operation can still succedd (if the zone is not full) but - * the write append location will not be where we expect it to be. - * Check that we wrote where we intended to, that is, at z->z_wpoffset. - */ - za_sector = z->z_sector + (za_bio->append_offset >> SECTOR_SHIFT); - if (bio->bi_iter.bi_sector != za_sector) { - zonefs_warn(za_bio->inode->i_sb, - "Invalid write sector %llu for zone at %llu\n", - bio->bi_iter.bi_sector, z->z_sector); - bio->bi_status = BLK_STS_IOERR; - } - -bio_end: - iomap_dio_bio_end_io(bio); -} - -static void zonefs_file_zone_append_dio_submit_io(const struct iomap_iter *iter, - struct bio *bio, - loff_t file_offset) -{ - struct zonefs_zone_append_bio *za_bio = zonefs_zone_append_bio(bio); - struct inode *inode = iter->inode; - struct zonefs_zone *z = zonefs_inode_zone(inode); - - /* - * Issue a zone append BIO to process sync dio writes. The append - * file offset is saved to check the zone append write location - * on completion of the BIO. - */ - za_bio->inode = inode; - za_bio->append_offset = file_offset; - - bio->bi_opf &= ~REQ_OP_WRITE; - bio->bi_opf |= REQ_OP_ZONE_APPEND; - bio->bi_iter.bi_sector = z->z_sector; - bio->bi_end_io = zonefs_file_zone_append_dio_bio_end_io; - - submit_bio(bio); -} - static int zonefs_file_write_dio_end_io(struct kiocb *iocb, ssize_t size, int error, unsigned int flags) { @@ -442,14 +371,6 @@ static int zonefs_file_write_dio_end_io(struct kiocb *iocb, ssize_t size, return 0; } -static struct bio_set zonefs_zone_append_bio_set; - -static const struct iomap_dio_ops zonefs_zone_append_dio_ops = { - .submit_io = zonefs_file_zone_append_dio_submit_io, - .end_io = zonefs_file_write_dio_end_io, - .bio_set = &zonefs_zone_append_bio_set, -}; - static const struct iomap_dio_ops zonefs_write_dio_ops = { .end_io = zonefs_file_write_dio_end_io, }; @@ -533,9 +454,6 @@ static ssize_t zonefs_file_dio_write(struct kiocb *iocb, struct iov_iter *from) struct zonefs_inode_info *zi = ZONEFS_I(inode); struct zonefs_zone *z = zonefs_inode_zone(inode); struct super_block *sb = inode->i_sb; - const struct iomap_dio_ops *dio_ops; - bool sync = is_sync_kiocb(iocb); - bool append = false; ssize_t ret, count; /* @@ -543,7 +461,8 @@ static ssize_t zonefs_file_dio_write(struct kiocb *iocb, struct iov_iter *from) * as this can cause write reordering (e.g. the first aio gets EAGAIN * on the inode lock but the second goes through but is now unaligned). */ - if (zonefs_zone_is_seq(z) && !sync && (iocb->ki_flags & IOCB_NOWAIT)) + if (zonefs_zone_is_seq(z) && !is_sync_kiocb(iocb) && + (iocb->ki_flags & IOCB_NOWAIT)) return -EOPNOTSUPP; if (iocb->ki_flags & IOCB_NOWAIT) { @@ -573,18 +492,6 @@ static ssize_t zonefs_file_dio_write(struct kiocb *iocb, struct iov_iter *from) goto inode_unlock; } mutex_unlock(&zi->i_truncate_mutex); - append = sync; - } - - if (append) { - unsigned int max = bdev_max_zone_append_sectors(sb->s_bdev); - - max = ALIGN_DOWN(max << SECTOR_SHIFT, sb->s_blocksize); - iov_iter_truncate(from, max); - - dio_ops = &zonefs_zone_append_dio_ops; - } else { - dio_ops = &zonefs_write_dio_ops; } /* @@ -593,7 +500,7 @@ static ssize_t zonefs_file_dio_write(struct kiocb *iocb, struct iov_iter *from) * the user can make sense of the error. */ ret = iomap_dio_rw(iocb, from, &zonefs_write_iomap_ops, - dio_ops, 0, NULL, 0); + &zonefs_write_dio_ops, 0, NULL, 0); if (ret == -ENOTBLK) ret = -EBUSY; @@ -938,15 +845,3 @@ const struct file_operations zonefs_file_operations = { .splice_write = iter_file_splice_write, .iopoll = iocb_bio_iopoll, }; - -int zonefs_file_bioset_init(void) -{ - return bioset_init(&zonefs_zone_append_bio_set, BIO_POOL_SIZE, - offsetof(struct zonefs_zone_append_bio, bio), - BIOSET_NEED_BVECS); -} - -void zonefs_file_bioset_exit(void) -{ - bioset_exit(&zonefs_zone_append_bio_set); -} diff --git a/fs/zonefs/super.c b/fs/zonefs/super.c index bbe44a26a8e5..9d1a9808fbbb 100644 --- a/fs/zonefs/super.c +++ b/fs/zonefs/super.c @@ -658,7 +658,8 @@ static struct inode *zonefs_get_file_inode(struct inode *dir, inode->i_ino = ino; inode->i_mode = z->z_mode; - inode->i_ctime = inode->i_mtime = inode->i_atime = dir->i_ctime; + inode->i_mtime = inode->i_atime = inode_set_ctime_to_ts(inode, + inode_get_ctime(dir)); inode->i_uid = z->z_uid; inode->i_gid = z->z_gid; inode->i_size = z->z_wpoffset; @@ -694,7 +695,8 @@ static struct inode *zonefs_get_zgroup_inode(struct super_block *sb, inode->i_ino = ino; inode_init_owner(&nop_mnt_idmap, inode, root, S_IFDIR | 0555); inode->i_size = sbi->s_zgroup[ztype].g_nr_zones; - inode->i_ctime = inode->i_mtime = inode->i_atime = root->i_ctime; + inode->i_mtime = inode->i_atime = inode_set_ctime_to_ts(inode, + inode_get_ctime(root)); inode->i_private = &sbi->s_zgroup[ztype]; set_nlink(inode, 2); @@ -1317,7 +1319,7 @@ static int zonefs_fill_super(struct super_block *sb, void *data, int silent) inode->i_ino = bdev_nr_zones(sb->s_bdev); inode->i_mode = S_IFDIR | 0555; - inode->i_ctime = inode->i_mtime = inode->i_atime = current_time(inode); + inode->i_mtime = inode->i_atime = inode_set_ctime_current(inode); inode->i_op = &zonefs_dir_inode_operations; inode->i_fop = &zonefs_dir_operations; inode->i_size = 2; @@ -1412,13 +1414,9 @@ static int __init zonefs_init(void) BUILD_BUG_ON(sizeof(struct zonefs_super) != ZONEFS_SUPER_SIZE); - ret = zonefs_file_bioset_init(); - if (ret) - return ret; - ret = zonefs_init_inodecache(); if (ret) - goto destroy_bioset; + return ret; ret = zonefs_sysfs_init(); if (ret) @@ -1434,8 +1432,6 @@ sysfs_exit: zonefs_sysfs_exit(); destroy_inodecache: zonefs_destroy_inodecache(); -destroy_bioset: - zonefs_file_bioset_exit(); return ret; } @@ -1445,7 +1441,6 @@ static void __exit zonefs_exit(void) unregister_filesystem(&zonefs_type); zonefs_sysfs_exit(); zonefs_destroy_inodecache(); - zonefs_file_bioset_exit(); } MODULE_AUTHOR("Damien Le Moal"); diff --git a/fs/zonefs/zonefs.h b/fs/zonefs/zonefs.h index f663b8ebc2cb..8175652241b5 100644 --- a/fs/zonefs/zonefs.h +++ b/fs/zonefs/zonefs.h @@ -279,8 +279,6 @@ extern const struct file_operations zonefs_dir_operations; extern const struct address_space_operations zonefs_file_aops; extern const struct file_operations zonefs_file_operations; int zonefs_file_truncate(struct inode *inode, loff_t isize); -int zonefs_file_bioset_init(void); -void zonefs_file_bioset_exit(void); /* In sysfs.c */ int zonefs_sysfs_register(struct super_block *sb); |