diff options
Diffstat (limited to 'fs')
259 files changed, 6184 insertions, 6083 deletions
diff --git a/fs/9p/fid.h b/fs/9p/fid.h index 2b6787fcb626..12700df0bb51 100644 --- a/fs/9p/fid.h +++ b/fs/9p/fid.h @@ -24,6 +24,10 @@ #include <linux/list.h> struct p9_fid *v9fs_fid_lookup(struct dentry *dentry); +static inline struct p9_fid *v9fs_parent_fid(struct dentry *dentry) +{ + return v9fs_fid_lookup(dentry->d_parent); +} struct p9_fid *v9fs_fid_clone(struct dentry *dentry); void v9fs_fid_add(struct dentry *dentry, struct p9_fid *fid); struct p9_fid *v9fs_writeback_fid(struct dentry *dentry); diff --git a/fs/9p/vfs_addr.c b/fs/9p/vfs_addr.c index c37fb9c08970..6181ad79e1a5 100644 --- a/fs/9p/vfs_addr.c +++ b/fs/9p/vfs_addr.c @@ -231,7 +231,6 @@ static int v9fs_launder_page(struct page *page) /** * v9fs_direct_IO - 9P address space operation for direct I/O * @iocb: target I/O control block - * @pos: offset in file to begin the operation * * The presence of v9fs_direct_IO() in the address space ops vector * allowes open() O_DIRECT flags which would have failed otherwise. diff --git a/fs/9p/vfs_inode.c b/fs/9p/vfs_inode.c index e2e7c749925a..7da9a8354fad 100644 --- a/fs/9p/vfs_inode.c +++ b/fs/9p/vfs_inode.c @@ -595,7 +595,7 @@ static int v9fs_remove(struct inode *dir, struct dentry *dentry, int flags) v9ses = v9fs_inode2v9ses(dir); inode = d_inode(dentry); - dfid = v9fs_fid_lookup(dentry->d_parent); + dfid = v9fs_parent_fid(dentry); if (IS_ERR(dfid)) { retval = PTR_ERR(dfid); p9_debug(P9_DEBUG_VFS, "fid lookup failed %d\n", retval); @@ -653,7 +653,7 @@ v9fs_create(struct v9fs_session_info *v9ses, struct inode *dir, ofid = NULL; fid = NULL; name = (char *) dentry->d_name.name; - dfid = v9fs_fid_lookup(dentry->d_parent); + dfid = v9fs_parent_fid(dentry); if (IS_ERR(dfid)) { err = PTR_ERR(dfid); p9_debug(P9_DEBUG_VFS, "fid lookup failed %d\n", err); @@ -798,7 +798,7 @@ struct dentry *v9fs_vfs_lookup(struct inode *dir, struct dentry *dentry, v9ses = v9fs_inode2v9ses(dir); /* We can walk d_parent because we hold the dir->i_mutex */ - dfid = v9fs_fid_lookup(dentry->d_parent); + dfid = v9fs_parent_fid(dentry); if (IS_ERR(dfid)) return ERR_CAST(dfid); @@ -975,13 +975,13 @@ v9fs_vfs_rename(struct inode *old_dir, struct dentry *old_dentry, if (IS_ERR(oldfid)) return PTR_ERR(oldfid); - olddirfid = v9fs_fid_clone(old_dentry->d_parent); + olddirfid = v9fs_parent_fid(old_dentry); if (IS_ERR(olddirfid)) { retval = PTR_ERR(olddirfid); goto done; } - newdirfid = v9fs_fid_clone(new_dentry->d_parent); + newdirfid = v9fs_parent_fid(new_dentry); if (IS_ERR(newdirfid)) { retval = PTR_ERR(newdirfid); goto clunk_olddir; diff --git a/fs/9p/vfs_inode_dotl.c b/fs/9p/vfs_inode_dotl.c index 1b51eaa5e2dd..2ed04c2fe7af 100644 --- a/fs/9p/vfs_inode_dotl.c +++ b/fs/9p/vfs_inode_dotl.c @@ -273,7 +273,7 @@ v9fs_vfs_atomic_open_dotl(struct inode *dir, struct dentry *dentry, p9_debug(P9_DEBUG_VFS, "name:%s flags:0x%x mode:0x%hx\n", name, flags, omode); - dfid = v9fs_fid_lookup(dentry->d_parent); + dfid = v9fs_parent_fid(dentry); if (IS_ERR(dfid)) { err = PTR_ERR(dfid); p9_debug(P9_DEBUG_VFS, "fid lookup failed %d\n", err); @@ -389,7 +389,6 @@ static int v9fs_vfs_mkdir_dotl(struct inode *dir, umode_t mode; struct inode *inode; struct p9_qid qid; - struct dentry *dir_dentry; struct posix_acl *dacl = NULL, *pacl = NULL; p9_debug(P9_DEBUG_VFS, "name %pd\n", dentry); @@ -400,8 +399,7 @@ static int v9fs_vfs_mkdir_dotl(struct inode *dir, if (dir->i_mode & S_ISGID) omode |= S_ISGID; - dir_dentry = dentry->d_parent; - dfid = v9fs_fid_lookup(dir_dentry); + dfid = v9fs_parent_fid(dentry); if (IS_ERR(dfid)) { err = PTR_ERR(dfid); p9_debug(P9_DEBUG_VFS, "fid lookup failed %d\n", err); @@ -691,7 +689,7 @@ v9fs_vfs_symlink_dotl(struct inode *dir, struct dentry *dentry, p9_debug(P9_DEBUG_VFS, "%lu,%s,%s\n", dir->i_ino, name, symname); v9ses = v9fs_inode2v9ses(dir); - dfid = v9fs_fid_lookup(dentry->d_parent); + dfid = v9fs_parent_fid(dentry); if (IS_ERR(dfid)) { err = PTR_ERR(dfid); p9_debug(P9_DEBUG_VFS, "fid lookup failed %d\n", err); @@ -762,7 +760,6 @@ v9fs_vfs_link_dotl(struct dentry *old_dentry, struct inode *dir, struct dentry *dentry) { int err; - struct dentry *dir_dentry; struct p9_fid *dfid, *oldfid; struct v9fs_session_info *v9ses; @@ -770,8 +767,7 @@ v9fs_vfs_link_dotl(struct dentry *old_dentry, struct inode *dir, dir->i_ino, old_dentry, dentry); v9ses = v9fs_inode2v9ses(dir); - dir_dentry = dentry->d_parent; - dfid = v9fs_fid_lookup(dir_dentry); + dfid = v9fs_parent_fid(dentry); if (IS_ERR(dfid)) return PTR_ERR(dfid); @@ -822,7 +818,6 @@ v9fs_vfs_mknod_dotl(struct inode *dir, struct dentry *dentry, umode_t omode, struct p9_fid *fid = NULL, *dfid = NULL; struct inode *inode; struct p9_qid qid; - struct dentry *dir_dentry; struct posix_acl *dacl = NULL, *pacl = NULL; p9_debug(P9_DEBUG_VFS, " %lu,%pd mode: %hx MAJOR: %u MINOR: %u\n", @@ -830,8 +825,7 @@ v9fs_vfs_mknod_dotl(struct inode *dir, struct dentry *dentry, umode_t omode, MAJOR(rdev), MINOR(rdev)); v9ses = v9fs_inode2v9ses(dir); - dir_dentry = dentry->d_parent; - dfid = v9fs_fid_lookup(dir_dentry); + dfid = v9fs_parent_fid(dentry); if (IS_ERR(dfid)) { err = PTR_ERR(dfid); p9_debug(P9_DEBUG_VFS, "fid lookup failed %d\n", err); diff --git a/fs/Kconfig b/fs/Kconfig index b8fcb416be72..4524916fa200 100644 --- a/fs/Kconfig +++ b/fs/Kconfig @@ -10,6 +10,9 @@ config DCACHE_WORD_ACCESS if BLOCK +config FS_IOMAP + bool + source "fs/ext2/Kconfig" source "fs/ext4/Kconfig" source "fs/jbd2/Kconfig" diff --git a/fs/Makefile b/fs/Makefile index 85b6e13b62d3..ed2b63257ba9 100644 --- a/fs/Makefile +++ b/fs/Makefile @@ -49,6 +49,7 @@ obj-$(CONFIG_COREDUMP) += coredump.o obj-$(CONFIG_SYSCTL) += drop_caches.o obj-$(CONFIG_FHANDLE) += fhandle.o +obj-$(CONFIG_FS_IOMAP) += iomap.o obj-y += quota/ diff --git a/fs/adfs/dir.c b/fs/adfs/dir.c index fd4cf2c48e48..bec25f7017c0 100644 --- a/fs/adfs/dir.c +++ b/fs/adfs/dir.c @@ -207,7 +207,7 @@ adfs_hash(const struct dentry *parent, struct qstr *qstr) */ qstr->len = i = name_len; name = qstr->name; - hash = init_name_hash(); + hash = init_name_hash(parent); while (i--) { char c; diff --git a/fs/affs/namei.c b/fs/affs/namei.c index 00d3002a6780..eb32029bc776 100644 --- a/fs/affs/namei.c +++ b/fs/affs/namei.c @@ -61,7 +61,7 @@ affs_get_toupper(struct super_block *sb) * Note: the dentry argument is the parent dentry. */ static inline int -__affs_hash_dentry(struct qstr *qstr, toupper_t toupper, bool notruncate) +__affs_hash_dentry(const struct dentry *dentry, struct qstr *qstr, toupper_t toupper, bool notruncate) { const u8 *name = qstr->name; unsigned long hash; @@ -72,7 +72,7 @@ __affs_hash_dentry(struct qstr *qstr, toupper_t toupper, bool notruncate) if (retval) return retval; - hash = init_name_hash(); + hash = init_name_hash(dentry); len = min(qstr->len, AFFSNAMEMAX); for (; len > 0; name++, len--) hash = partial_name_hash(toupper(*name), hash); @@ -84,7 +84,7 @@ __affs_hash_dentry(struct qstr *qstr, toupper_t toupper, bool notruncate) static int affs_hash_dentry(const struct dentry *dentry, struct qstr *qstr) { - return __affs_hash_dentry(qstr, affs_toupper, + return __affs_hash_dentry(dentry, qstr, affs_toupper, affs_nofilenametruncate(dentry)); } @@ -92,7 +92,7 @@ affs_hash_dentry(const struct dentry *dentry, struct qstr *qstr) static int affs_intl_hash_dentry(const struct dentry *dentry, struct qstr *qstr) { - return __affs_hash_dentry(qstr, affs_intl_toupper, + return __affs_hash_dentry(dentry, qstr, affs_intl_toupper, affs_nofilenametruncate(dentry)); } diff --git a/fs/afs/rxrpc.c b/fs/afs/rxrpc.c index 63cd9f939f19..4832de84d52c 100644 --- a/fs/afs/rxrpc.c +++ b/fs/afs/rxrpc.c @@ -85,18 +85,14 @@ int afs_open_socket(void) skb_queue_head_init(&afs_incoming_calls); + ret = -ENOMEM; afs_async_calls = create_singlethread_workqueue("kafsd"); - if (!afs_async_calls) { - _leave(" = -ENOMEM [wq]"); - return -ENOMEM; - } + if (!afs_async_calls) + goto error_0; ret = sock_create_kern(&init_net, AF_RXRPC, SOCK_DGRAM, PF_INET, &socket); - if (ret < 0) { - destroy_workqueue(afs_async_calls); - _leave(" = %d [socket]", ret); - return ret; - } + if (ret < 0) + goto error_1; socket->sk->sk_allocation = GFP_NOFS; @@ -111,18 +107,26 @@ int afs_open_socket(void) sizeof(srx.transport.sin.sin_addr)); ret = kernel_bind(socket, (struct sockaddr *) &srx, sizeof(srx)); - if (ret < 0) { - sock_release(socket); - destroy_workqueue(afs_async_calls); - _leave(" = %d [bind]", ret); - return ret; - } + if (ret < 0) + goto error_2; + + ret = kernel_listen(socket, INT_MAX); + if (ret < 0) + goto error_2; rxrpc_kernel_intercept_rx_messages(socket, afs_rx_interceptor); afs_socket = socket; _leave(" = 0"); return 0; + +error_2: + sock_release(socket); +error_1: + destroy_workqueue(afs_async_calls); +error_0: + _leave(" = %d", ret); + return ret; } /* diff --git a/fs/autofs4/waitq.c b/fs/autofs4/waitq.c index 631f1554c87b..708214457d16 100644 --- a/fs/autofs4/waitq.c +++ b/fs/autofs4/waitq.c @@ -398,7 +398,7 @@ int autofs4_wait(struct autofs_sb_info *sbi, } } qstr.name = name; - qstr.hash = full_name_hash(name, qstr.len); + qstr.hash = full_name_hash(dentry, name, qstr.len); if (mutex_lock_interruptible(&sbi->wq_mutex)) { kfree(qstr.name); diff --git a/fs/binfmt_misc.c b/fs/binfmt_misc.c index 3a3ced779fc7..5417516f6e59 100644 --- a/fs/binfmt_misc.c +++ b/fs/binfmt_misc.c @@ -637,13 +637,12 @@ static ssize_t bm_entry_write(struct file *file, const char __user *buffer, break; case 3: /* Delete this handler. */ - root = dget(file->f_path.dentry->d_sb->s_root); + root = file_inode(file)->i_sb->s_root; inode_lock(d_inode(root)); kill_node(e); inode_unlock(d_inode(root)); - dput(root); break; default: return res; @@ -665,8 +664,8 @@ static ssize_t bm_register_write(struct file *file, const char __user *buffer, { Node *e; struct inode *inode; - struct dentry *root, *dentry; - struct super_block *sb = file->f_path.dentry->d_sb; + struct super_block *sb = file_inode(file)->i_sb; + struct dentry *root = sb->s_root, *dentry; int err = 0; e = create_entry(buffer, count); @@ -674,7 +673,6 @@ static ssize_t bm_register_write(struct file *file, const char __user *buffer, if (IS_ERR(e)) return PTR_ERR(e); - root = dget(sb->s_root); inode_lock(d_inode(root)); dentry = lookup_one_len(e->name, root, strlen(e->name)); err = PTR_ERR(dentry); @@ -712,7 +710,6 @@ out2: dput(dentry); out: inode_unlock(d_inode(root)); - dput(root); if (err) { kfree(e); @@ -753,14 +750,13 @@ static ssize_t bm_status_write(struct file *file, const char __user *buffer, break; case 3: /* Delete all handlers. */ - root = dget(file->f_path.dentry->d_sb->s_root); + root = file_inode(file)->i_sb->s_root; inode_lock(d_inode(root)); while (!list_empty(&entries)) kill_node(list_entry(entries.next, Node, list)); inode_unlock(d_inode(root)); - dput(root); break; default: return res; diff --git a/fs/block_dev.c b/fs/block_dev.c index d012be4ab977..5cbd5391667e 100644 --- a/fs/block_dev.c +++ b/fs/block_dev.c @@ -614,7 +614,6 @@ static void init_once(void *foo) memset(bdev, 0, sizeof(*bdev)); mutex_init(&bdev->bd_mutex); - INIT_LIST_HEAD(&bdev->bd_inodes); INIT_LIST_HEAD(&bdev->bd_list); #ifdef CONFIG_SYSFS INIT_LIST_HEAD(&bdev->bd_holder_disks); @@ -624,24 +623,13 @@ static void init_once(void *foo) mutex_init(&bdev->bd_fsfreeze_mutex); } -static inline void __bd_forget(struct inode *inode) -{ - list_del_init(&inode->i_devices); - inode->i_bdev = NULL; - inode->i_mapping = &inode->i_data; -} - static void bdev_evict_inode(struct inode *inode) { struct block_device *bdev = &BDEV_I(inode)->bdev; - struct list_head *p; truncate_inode_pages_final(&inode->i_data); invalidate_inode_buffers(inode); /* is it needed here? */ clear_inode(inode); spin_lock(&bdev_lock); - while ( (p = bdev->bd_inodes.next) != &bdev->bd_inodes ) { - __bd_forget(list_entry(p, struct inode, i_devices)); - } list_del_init(&bdev->bd_list); spin_unlock(&bdev_lock); } @@ -805,7 +793,6 @@ static struct block_device *bd_acquire(struct inode *inode) bdgrab(bdev); inode->i_bdev = bdev; inode->i_mapping = bdev->bd_inode->i_mapping; - list_add(&inode->i_devices, &bdev->bd_inodes); } spin_unlock(&bdev_lock); } @@ -821,7 +808,8 @@ void bd_forget(struct inode *inode) spin_lock(&bdev_lock); if (!sb_is_blkdev_sb(inode->i_sb)) bdev = inode->i_bdev; - __bd_forget(inode); + inode->i_bdev = NULL; + inode->i_mapping = &inode->i_data; spin_unlock(&bdev_lock); if (bdev) diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c index 27c214941004..cee4cb99b8ce 100644 --- a/fs/btrfs/extent_io.c +++ b/fs/btrfs/extent_io.c @@ -4178,7 +4178,8 @@ int extent_readpages(struct extent_io_tree *tree, prefetchw(&page->flags); list_del(&page->lru); if (add_to_page_cache_lru(page, mapping, - page->index, GFP_NOFS)) { + page->index, + readahead_gfp_mask(mapping))) { put_page(page); continue; } diff --git a/fs/buffer.c b/fs/buffer.c index b9fa1be75e69..9c8eb9b6db6a 100644 --- a/fs/buffer.c +++ b/fs/buffer.c @@ -21,6 +21,7 @@ #include <linux/kernel.h> #include <linux/syscalls.h> #include <linux/fs.h> +#include <linux/iomap.h> #include <linux/mm.h> #include <linux/percpu.h> #include <linux/slab.h> @@ -1892,8 +1893,62 @@ void page_zero_new_buffers(struct page *page, unsigned from, unsigned to) } EXPORT_SYMBOL(page_zero_new_buffers); -int __block_write_begin(struct page *page, loff_t pos, unsigned len, - get_block_t *get_block) +static void +iomap_to_bh(struct inode *inode, sector_t block, struct buffer_head *bh, + struct iomap *iomap) +{ + loff_t offset = block << inode->i_blkbits; + + bh->b_bdev = iomap->bdev; + + /* + * Block points to offset in file we need to map, iomap contains + * the offset at which the map starts. If the map ends before the + * current block, then do not map the buffer and let the caller + * handle it. + */ + BUG_ON(offset >= iomap->offset + iomap->length); + + switch (iomap->type) { + case IOMAP_HOLE: + /* + * If the buffer is not up to date or beyond the current EOF, + * we need to mark it as new to ensure sub-block zeroing is + * executed if necessary. + */ + if (!buffer_uptodate(bh) || + (offset >= i_size_read(inode))) + set_buffer_new(bh); + break; + case IOMAP_DELALLOC: + if (!buffer_uptodate(bh) || + (offset >= i_size_read(inode))) + set_buffer_new(bh); + set_buffer_uptodate(bh); + set_buffer_mapped(bh); + set_buffer_delay(bh); + break; + case IOMAP_UNWRITTEN: + /* + * For unwritten regions, we always need to ensure that + * sub-block writes cause the regions in the block we are not + * writing to are zeroed. Set the buffer as new to ensure this. + */ + set_buffer_new(bh); + set_buffer_unwritten(bh); + /* FALLTHRU */ + case IOMAP_MAPPED: + if (offset >= i_size_read(inode)) + set_buffer_new(bh); + bh->b_blocknr = (iomap->blkno >> (inode->i_blkbits - 9)) + + ((offset - iomap->offset) >> inode->i_blkbits); + set_buffer_mapped(bh); + break; + } +} + +int __block_write_begin_int(struct page *page, loff_t pos, unsigned len, + get_block_t *get_block, struct iomap *iomap) { unsigned from = pos & (PAGE_SIZE - 1); unsigned to = from + len; @@ -1929,9 +1984,14 @@ int __block_write_begin(struct page *page, loff_t pos, unsigned len, clear_buffer_new(bh); if (!buffer_mapped(bh)) { WARN_ON(bh->b_size != blocksize); - err = get_block(inode, block, bh, 1); - if (err) - break; + if (get_block) { + err = get_block(inode, block, bh, 1); + if (err) + break; + } else { + iomap_to_bh(inode, block, bh, iomap); + } + if (buffer_new(bh)) { unmap_underlying_metadata(bh->b_bdev, bh->b_blocknr); @@ -1972,6 +2032,12 @@ int __block_write_begin(struct page *page, loff_t pos, unsigned len, page_zero_new_buffers(page, from, to); return err; } + +int __block_write_begin(struct page *page, loff_t pos, unsigned len, + get_block_t *get_block) +{ + return __block_write_begin_int(page, pos, len, get_block, NULL); +} EXPORT_SYMBOL(__block_write_begin); static int __block_commit_write(struct inode *inode, struct page *page, diff --git a/fs/cachefiles/proc.c b/fs/cachefiles/proc.c index eccd33941199..125b90f6c796 100644 --- a/fs/cachefiles/proc.c +++ b/fs/cachefiles/proc.c @@ -93,7 +93,6 @@ static int cachefiles_histogram_open(struct inode *inode, struct file *file) } static const struct file_operations cachefiles_histogram_fops = { - .owner = THIS_MODULE, .open = cachefiles_histogram_open, .read = seq_read, .llseek = seq_lseek, diff --git a/fs/ceph/inode.c b/fs/ceph/inode.c index f059b5997072..99bdef66213a 100644 --- a/fs/ceph/inode.c +++ b/fs/ceph/inode.c @@ -1164,7 +1164,7 @@ int ceph_fill_trace(struct super_block *sb, struct ceph_mds_request *req, dname.name = rinfo->dname; dname.len = rinfo->dname_len; - dname.hash = full_name_hash(dname.name, dname.len); + dname.hash = full_name_hash(parent, dname.name, dname.len); vino.ino = le64_to_cpu(rinfo->targeti.in->ino); vino.snap = le64_to_cpu(rinfo->targeti.in->snapid); retry_lookup: @@ -1508,7 +1508,7 @@ int ceph_readdir_prepopulate(struct ceph_mds_request *req, dname.name = rde->name; dname.len = rde->name_len; - dname.hash = full_name_hash(dname.name, dname.len); + dname.hash = full_name_hash(parent, dname.name, dname.len); vino.ino = le64_to_cpu(rde->inode.in->ino); vino.snap = le64_to_cpu(rde->inode.in->snapid); diff --git a/fs/ceph/mds_client.c b/fs/ceph/mds_client.c index 2103b823bec0..4e8678a612b6 100644 --- a/fs/ceph/mds_client.c +++ b/fs/ceph/mds_client.c @@ -3204,7 +3204,7 @@ static void handle_lease(struct ceph_mds_client *mdsc, WARN_ON(1); goto release; /* hrm... */ } - dname.hash = full_name_hash(dname.name, dname.len); + dname.hash = full_name_hash(parent, dname.name, dname.len); dentry = d_lookup(parent, &dname); dput(parent); if (!dentry) diff --git a/fs/cifs/cifs_debug.c b/fs/cifs/cifs_debug.c index 788e19195991..6c58e13fed2f 100644 --- a/fs/cifs/cifs_debug.c +++ b/fs/cifs/cifs_debug.c @@ -244,7 +244,6 @@ static int cifs_debug_data_proc_open(struct inode *inode, struct file *file) } static const struct file_operations cifs_debug_data_proc_fops = { - .owner = THIS_MODULE, .open = cifs_debug_data_proc_open, .read = seq_read, .llseek = seq_lseek, @@ -361,7 +360,6 @@ static int cifs_stats_proc_open(struct inode *inode, struct file *file) } static const struct file_operations cifs_stats_proc_fops = { - .owner = THIS_MODULE, .open = cifs_stats_proc_open, .read = seq_read, .llseek = seq_lseek, @@ -447,7 +445,6 @@ static ssize_t cifsFYI_proc_write(struct file *file, const char __user *buffer, } static const struct file_operations cifsFYI_proc_fops = { - .owner = THIS_MODULE, .open = cifsFYI_proc_open, .read = seq_read, .llseek = seq_lseek, @@ -479,7 +476,6 @@ static ssize_t cifs_linux_ext_proc_write(struct file *file, } static const struct file_operations cifs_linux_ext_proc_fops = { - .owner = THIS_MODULE, .open = cifs_linux_ext_proc_open, .read = seq_read, .llseek = seq_lseek, @@ -511,7 +507,6 @@ static ssize_t cifs_lookup_cache_proc_write(struct file *file, } static const struct file_operations cifs_lookup_cache_proc_fops = { - .owner = THIS_MODULE, .open = cifs_lookup_cache_proc_open, .read = seq_read, .llseek = seq_lseek, @@ -543,7 +538,6 @@ static ssize_t traceSMB_proc_write(struct file *file, const char __user *buffer, } static const struct file_operations traceSMB_proc_fops = { - .owner = THIS_MODULE, .open = traceSMB_proc_open, .read = seq_read, .llseek = seq_lseek, @@ -655,7 +649,6 @@ static ssize_t cifs_security_flags_proc_write(struct file *file, } static const struct file_operations cifs_security_flags_proc_fops = { - .owner = THIS_MODULE, .open = cifs_security_flags_proc_open, .read = seq_read, .llseek = seq_lseek, diff --git a/fs/cifs/cifs_fs_sb.h b/fs/cifs/cifs_fs_sb.h index 3182273a3407..1418daa03d95 100644 --- a/fs/cifs/cifs_fs_sb.h +++ b/fs/cifs/cifs_fs_sb.h @@ -46,6 +46,9 @@ #define CIFS_MOUNT_CIFS_BACKUPUID 0x200000 /* backup intent bit for a user */ #define CIFS_MOUNT_CIFS_BACKUPGID 0x400000 /* backup intent bit for a group */ #define CIFS_MOUNT_MAP_SFM_CHR 0x800000 /* SFM/MAC mapping for illegal chars */ +#define CIFS_MOUNT_USE_PREFIX_PATH 0x1000000 /* make subpath with unaccessible + * root mountable + */ struct cifs_sb_info { struct rb_root tlink_tree; @@ -67,5 +70,6 @@ struct cifs_sb_info { struct backing_dev_info bdi; struct delayed_work prune_tlinks; struct rcu_head rcu; + char *prepath; }; #endif /* _CIFS_FS_SB_H */ diff --git a/fs/cifs/cifsencrypt.c b/fs/cifs/cifsencrypt.c index 6aeb8d4616a4..8347c90cf483 100644 --- a/fs/cifs/cifsencrypt.c +++ b/fs/cifs/cifsencrypt.c @@ -743,24 +743,26 @@ setup_ntlmv2_rsp(struct cifs_ses *ses, const struct nls_table *nls_cp) memcpy(ses->auth_key.response + baselen, tiblob, tilen); + mutex_lock(&ses->server->srv_mutex); + rc = crypto_hmacmd5_alloc(ses->server); if (rc) { cifs_dbg(VFS, "could not crypto alloc hmacmd5 rc %d\n", rc); - goto setup_ntlmv2_rsp_ret; + goto unlock; } /* calculate ntlmv2_hash */ rc = calc_ntlmv2_hash(ses, ntlmv2_hash, nls_cp); if (rc) { cifs_dbg(VFS, "could not get v2 hash rc %d\n", rc); - goto setup_ntlmv2_rsp_ret; + goto unlock; } /* calculate first part of the client response (CR1) */ rc = CalcNTLMv2_response(ses, ntlmv2_hash); if (rc) { cifs_dbg(VFS, "Could not calculate CR1 rc: %d\n", rc); - goto setup_ntlmv2_rsp_ret; + goto unlock; } /* now calculate the session key for NTLMv2 */ @@ -769,13 +771,13 @@ setup_ntlmv2_rsp(struct cifs_ses *ses, const struct nls_table *nls_cp) if (rc) { cifs_dbg(VFS, "%s: Could not set NTLMV2 Hash as a key\n", __func__); - goto setup_ntlmv2_rsp_ret; + goto unlock; } rc = crypto_shash_init(&ses->server->secmech.sdeschmacmd5->shash); if (rc) { cifs_dbg(VFS, "%s: Could not init hmacmd5\n", __func__); - goto setup_ntlmv2_rsp_ret; + goto unlock; } rc = crypto_shash_update(&ses->server->secmech.sdeschmacmd5->shash, @@ -783,7 +785,7 @@ setup_ntlmv2_rsp(struct cifs_ses *ses, const struct nls_table *nls_cp) CIFS_HMAC_MD5_HASH_SIZE); if (rc) { cifs_dbg(VFS, "%s: Could not update with response\n", __func__); - goto setup_ntlmv2_rsp_ret; + goto unlock; } rc = crypto_shash_final(&ses->server->secmech.sdeschmacmd5->shash, @@ -791,6 +793,8 @@ setup_ntlmv2_rsp(struct cifs_ses *ses, const struct nls_table *nls_cp) if (rc) cifs_dbg(VFS, "%s: Could not generate md5 hash\n", __func__); +unlock: + mutex_unlock(&ses->server->srv_mutex); setup_ntlmv2_rsp_ret: kfree(tiblob); diff --git a/fs/cifs/cifsfs.c b/fs/cifs/cifsfs.c index 5d841f39c4b7..6bbec5e784cd 100644 --- a/fs/cifs/cifsfs.c +++ b/fs/cifs/cifsfs.c @@ -689,6 +689,14 @@ cifs_do_mount(struct file_system_type *fs_type, goto out_cifs_sb; } + if (volume_info->prepath) { + cifs_sb->prepath = kstrdup(volume_info->prepath, GFP_KERNEL); + if (cifs_sb->prepath == NULL) { + root = ERR_PTR(-ENOMEM); + goto out_cifs_sb; + } + } + cifs_setup_cifs_sb(volume_info, cifs_sb); rc = cifs_mount(cifs_sb, volume_info); @@ -727,7 +735,11 @@ cifs_do_mount(struct file_system_type *fs_type, sb->s_flags |= MS_ACTIVE; } - root = cifs_get_root(volume_info, sb); + if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_USE_PREFIX_PATH) + root = dget(sb->s_root); + else + root = cifs_get_root(volume_info, sb); + if (IS_ERR(root)) goto out_super; diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c index 7d2b15c06090..7ae03283bd61 100644 --- a/fs/cifs/connect.c +++ b/fs/cifs/connect.c @@ -1228,6 +1228,8 @@ cifs_parse_mount_options(const char *mountdata, const char *devname, vol->ops = &smb1_operations; vol->vals = &smb1_values; + vol->echo_interval = SMB_ECHO_INTERVAL_DEFAULT; + if (!mountdata) goto cifs_parse_mount_err; @@ -2049,7 +2051,7 @@ static int match_server(struct TCP_Server_Info *server, struct smb_vol *vol) if (!match_security(server, vol)) return 0; - if (server->echo_interval != vol->echo_interval) + if (server->echo_interval != vol->echo_interval * HZ) return 0; return 1; @@ -3483,6 +3485,44 @@ cifs_get_volume_info(char *mount_data, const char *devname) return volume_info; } +static int +cifs_are_all_path_components_accessible(struct TCP_Server_Info *server, + unsigned int xid, + struct cifs_tcon *tcon, + struct cifs_sb_info *cifs_sb, + char *full_path) +{ + int rc; + char *s; + char sep, tmp; + + sep = CIFS_DIR_SEP(cifs_sb); + s = full_path; + + rc = server->ops->is_path_accessible(xid, tcon, cifs_sb, ""); + while (rc == 0) { + /* skip separators */ + while (*s == sep) + s++; + if (!*s) + break; + /* next separator */ + while (*s && *s != sep) + s++; + + /* + * temporarily null-terminate the path at the end of + * the current component + */ + tmp = *s; + *s = 0; + rc = server->ops->is_path_accessible(xid, tcon, cifs_sb, + full_path); + *s = tmp; + } + return rc; +} + int cifs_mount(struct cifs_sb_info *cifs_sb, struct smb_vol *volume_info) { @@ -3620,6 +3660,16 @@ remote_path_check: kfree(full_path); goto mount_fail_check; } + + rc = cifs_are_all_path_components_accessible(server, + xid, tcon, cifs_sb, + full_path); + if (rc != 0) { + cifs_dbg(VFS, "cannot query dirs between root and final path, " + "enabling CIFS_MOUNT_USE_PREFIX_PATH\n"); + cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_USE_PREFIX_PATH; + rc = 0; + } kfree(full_path); } @@ -3889,6 +3939,7 @@ cifs_umount(struct cifs_sb_info *cifs_sb) bdi_destroy(&cifs_sb->bdi); kfree(cifs_sb->mountdata); + kfree(cifs_sb->prepath); call_rcu(&cifs_sb->rcu, delayed_free); } diff --git a/fs/cifs/dir.c b/fs/cifs/dir.c index fb0903fffc22..4e532536cbc6 100644 --- a/fs/cifs/dir.c +++ b/fs/cifs/dir.c @@ -84,6 +84,7 @@ build_path_from_dentry(struct dentry *direntry) struct dentry *temp; int namelen; int dfsplen; + int pplen = 0; char *full_path; char dirsep; struct cifs_sb_info *cifs_sb = CIFS_SB(direntry->d_sb); @@ -95,8 +96,12 @@ build_path_from_dentry(struct dentry *direntry) dfsplen = strnlen(tcon->treeName, MAX_TREE_SIZE + 1); else dfsplen = 0; + + if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_USE_PREFIX_PATH) + pplen = cifs_sb->prepath ? strlen(cifs_sb->prepath) + 1 : 0; + cifs_bp_rename_retry: - namelen = dfsplen; + namelen = dfsplen + pplen; seq = read_seqbegin(&rename_lock); rcu_read_lock(); for (temp = direntry; !IS_ROOT(temp);) { @@ -137,7 +142,7 @@ cifs_bp_rename_retry: } } rcu_read_unlock(); - if (namelen != dfsplen || read_seqretry(&rename_lock, seq)) { + if (namelen != dfsplen + pplen || read_seqretry(&rename_lock, seq)) { cifs_dbg(FYI, "did not end path lookup where expected. namelen=%ddfsplen=%d\n", namelen, dfsplen); /* presumably this is only possible if racing with a rename @@ -153,6 +158,17 @@ cifs_bp_rename_retry: those safely to '/' if any are found in the middle of the prepath */ /* BB test paths to Windows with '/' in the midst of prepath */ + if (pplen) { + int i; + + cifs_dbg(FYI, "using cifs_sb prepath <%s>\n", cifs_sb->prepath); + memcpy(full_path+dfsplen+1, cifs_sb->prepath, pplen-1); + full_path[dfsplen] = '\\'; + for (i = 0; i < pplen-1; i++) + if (full_path[dfsplen+1+i] == '/') + full_path[dfsplen+1+i] = CIFS_DIR_SEP(cifs_sb); + } + if (dfsplen) { strncpy(full_path, tcon->treeName, dfsplen); if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_POSIX_PATHS) { @@ -229,6 +245,13 @@ cifs_do_create(struct inode *inode, struct dentry *direntry, unsigned int xid, goto cifs_create_get_file_info; } + if (S_ISDIR(newinode->i_mode)) { + CIFSSMBClose(xid, tcon, fid->netfid); + iput(newinode); + rc = -EISDIR; + goto out; + } + if (!S_ISREG(newinode->i_mode)) { /* * The server may allow us to open things like @@ -399,10 +422,14 @@ cifs_create_set_dentry: if (rc != 0) { cifs_dbg(FYI, "Create worked, get_inode_info failed rc = %d\n", rc); - if (server->ops->close) - server->ops->close(xid, tcon, fid); - goto out; + goto out_err; } + + if (S_ISDIR(newinode->i_mode)) { + rc = -EISDIR; + goto out_err; + } + d_drop(direntry); d_add(direntry, newinode); @@ -410,6 +437,13 @@ out: kfree(buf); kfree(full_path); return rc; + +out_err: + if (server->ops->close) + server->ops->close(xid, tcon, fid); + if (newinode) + iput(newinode); + goto out; } int @@ -856,7 +890,7 @@ static int cifs_ci_hash(const struct dentry *dentry, struct qstr *q) wchar_t c; int i, charlen; - hash = init_name_hash(); + hash = init_name_hash(dentry); for (i = 0; i < q->len; i += charlen) { charlen = codepage->char2uni(&q->name[i], q->len - i, &c); /* error out if we can't convert the character */ diff --git a/fs/cifs/file.c b/fs/cifs/file.c index d4890b6dc22d..579e41b350a2 100644 --- a/fs/cifs/file.c +++ b/fs/cifs/file.c @@ -3366,7 +3366,7 @@ readpages_get_pages(struct address_space *mapping, struct list_head *page_list, struct page *page, *tpage; unsigned int expected_index; int rc; - gfp_t gfp = mapping_gfp_constraint(mapping, GFP_KERNEL); + gfp_t gfp = readahead_gfp_mask(mapping); INIT_LIST_HEAD(tmplist); diff --git a/fs/cifs/inode.c b/fs/cifs/inode.c index 514dadb0575d..b87efd0c92d6 100644 --- a/fs/cifs/inode.c +++ b/fs/cifs/inode.c @@ -1002,10 +1002,26 @@ struct inode *cifs_root_iget(struct super_block *sb) struct inode *inode = NULL; long rc; struct cifs_tcon *tcon = cifs_sb_master_tcon(cifs_sb); + char *path = NULL; + int len; + + if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_USE_PREFIX_PATH) + && cifs_sb->prepath) { + len = strlen(cifs_sb->prepath); + path = kzalloc(len + 2 /* leading sep + null */, GFP_KERNEL); + if (path == NULL) + return ERR_PTR(-ENOMEM); + path[0] = '/'; + memcpy(path+1, cifs_sb->prepath, len); + } else { + path = kstrdup("", GFP_KERNEL); + if (path == NULL) + return ERR_PTR(-ENOMEM); + } xid = get_xid(); if (tcon->unix_ext) { - rc = cifs_get_inode_info_unix(&inode, "", sb, xid); + rc = cifs_get_inode_info_unix(&inode, path, sb, xid); /* some servers mistakenly claim POSIX support */ if (rc != -EOPNOTSUPP) goto iget_no_retry; @@ -1013,7 +1029,8 @@ struct inode *cifs_root_iget(struct super_block *sb) tcon->unix_ext = false; } - rc = cifs_get_inode_info(&inode, "", NULL, sb, xid, NULL); + convert_delimiter(path, CIFS_DIR_SEP(cifs_sb)); + rc = cifs_get_inode_info(&inode, path, NULL, sb, xid, NULL); iget_no_retry: if (!inode) { @@ -1042,6 +1059,7 @@ iget_no_retry: } out: + kfree(path); /* can not call macro free_xid here since in a void func * TODO: This is no longer true */ diff --git a/fs/cifs/smb2ops.c b/fs/cifs/smb2ops.c index 3525ed756173..d203c0329626 100644 --- a/fs/cifs/smb2ops.c +++ b/fs/cifs/smb2ops.c @@ -1044,6 +1044,9 @@ smb2_new_lease_key(struct cifs_fid *fid) get_random_bytes(fid->lease_key, SMB2_LEASE_KEY_SIZE); } +#define SMB2_SYMLINK_STRUCT_SIZE \ + (sizeof(struct smb2_err_rsp) - 1 + sizeof(struct smb2_symlink_err_rsp)) + static int smb2_query_symlink(const unsigned int xid, struct cifs_tcon *tcon, const char *full_path, char **target_path, @@ -1056,7 +1059,10 @@ smb2_query_symlink(const unsigned int xid, struct cifs_tcon *tcon, struct cifs_fid fid; struct smb2_err_rsp *err_buf = NULL; struct smb2_symlink_err_rsp *symlink; - unsigned int sub_len, sub_offset; + unsigned int sub_len; + unsigned int sub_offset; + unsigned int print_len; + unsigned int print_offset; cifs_dbg(FYI, "%s: path: %s\n", __func__, full_path); @@ -1077,11 +1083,33 @@ smb2_query_symlink(const unsigned int xid, struct cifs_tcon *tcon, kfree(utf16_path); return -ENOENT; } + + if (le32_to_cpu(err_buf->ByteCount) < sizeof(struct smb2_symlink_err_rsp) || + get_rfc1002_length(err_buf) + 4 < SMB2_SYMLINK_STRUCT_SIZE) { + kfree(utf16_path); + return -ENOENT; + } + /* open must fail on symlink - reset rc */ rc = 0; symlink = (struct smb2_symlink_err_rsp *)err_buf->ErrorData; sub_len = le16_to_cpu(symlink->SubstituteNameLength); sub_offset = le16_to_cpu(symlink->SubstituteNameOffset); + print_len = le16_to_cpu(symlink->PrintNameLength); + print_offset = le16_to_cpu(symlink->PrintNameOffset); + + if (get_rfc1002_length(err_buf) + 4 < + SMB2_SYMLINK_STRUCT_SIZE + sub_offset + sub_len) { + kfree(utf16_path); + return -ENOENT; + } + + if (get_rfc1002_length(err_buf) + 4 < + SMB2_SYMLINK_STRUCT_SIZE + print_offset + print_len) { + kfree(utf16_path); + return -ENOENT; + } + *target_path = cifs_strndup_from_utf16( (char *)symlink->PathBuffer + sub_offset, sub_len, true, cifs_sb->local_nls); @@ -1515,6 +1543,8 @@ struct smb_version_operations smb20_operations = { .rename = smb2_rename_path, .create_hardlink = smb2_create_hardlink, .query_symlink = smb2_query_symlink, + .query_mf_symlink = smb3_query_mf_symlink, + .create_mf_symlink = smb3_create_mf_symlink, .open = smb2_open_file, .set_fid = smb2_set_fid, .close = smb2_close_file, diff --git a/fs/coda/pioctl.c b/fs/coda/pioctl.c index f36a4040afb8..b0b9cda41928 100644 --- a/fs/coda/pioctl.c +++ b/fs/coda/pioctl.c @@ -35,7 +35,6 @@ const struct inode_operations coda_ioctl_inode_operations = { }; const struct file_operations coda_ioctl_operations = { - .owner = THIS_MODULE, .unlocked_ioctl = coda_pioctl, .llseek = noop_llseek, }; diff --git a/fs/compat_ioctl.c b/fs/compat_ioctl.c index bd01b92aad98..c1e9f29c924c 100644 --- a/fs/compat_ioctl.c +++ b/fs/compat_ioctl.c @@ -57,6 +57,7 @@ #include <linux/i2c-dev.h> #include <linux/atalk.h> #include <linux/gfp.h> +#include <linux/cec.h> #include "internal.h" @@ -1377,6 +1378,17 @@ COMPATIBLE_IOCTL(VIDEO_GET_NAVI) COMPATIBLE_IOCTL(VIDEO_SET_ATTRIBUTES) COMPATIBLE_IOCTL(VIDEO_GET_SIZE) COMPATIBLE_IOCTL(VIDEO_GET_FRAME_RATE) +/* cec */ +COMPATIBLE_IOCTL(CEC_ADAP_G_CAPS) +COMPATIBLE_IOCTL(CEC_ADAP_G_LOG_ADDRS) +COMPATIBLE_IOCTL(CEC_ADAP_S_LOG_ADDRS) +COMPATIBLE_IOCTL(CEC_ADAP_G_PHYS_ADDR) +COMPATIBLE_IOCTL(CEC_ADAP_S_PHYS_ADDR) +COMPATIBLE_IOCTL(CEC_G_MODE) +COMPATIBLE_IOCTL(CEC_S_MODE) +COMPATIBLE_IOCTL(CEC_TRANSMIT) +COMPATIBLE_IOCTL(CEC_RECEIVE) +COMPATIBLE_IOCTL(CEC_DQEVENT) /* joystick */ COMPATIBLE_IOCTL(JSIOCGVERSION) diff --git a/fs/configfs/file.c b/fs/configfs/file.c index bbc1252a59f5..c30cf49b69d2 100644 --- a/fs/configfs/file.c +++ b/fs/configfs/file.c @@ -80,11 +80,11 @@ static int fill_read_buffer(struct dentry * dentry, struct configfs_buffer * buf count = attr->show(item, buffer->page); - buffer->needs_read_fill = 0; BUG_ON(count > (ssize_t)SIMPLE_ATTR_SIZE); - if (count >= 0) + if (count >= 0) { + buffer->needs_read_fill = 0; buffer->count = count; - else + } else ret = count; return ret; } @@ -75,13 +75,13 @@ static long dax_map_atomic(struct block_device *bdev, struct blk_dax_ctl *dax) struct request_queue *q = bdev->bd_queue; long rc = -EIO; - dax->addr = (void __pmem *) ERR_PTR(-EIO); + dax->addr = ERR_PTR(-EIO); if (blk_queue_enter(q, true) != 0) return rc; rc = bdev_direct_access(bdev, dax); if (rc < 0) { - dax->addr = (void __pmem *) ERR_PTR(rc); + dax->addr = ERR_PTR(rc); blk_queue_exit(q); return rc; } @@ -147,12 +147,12 @@ static ssize_t dax_io(struct inode *inode, struct iov_iter *iter, struct buffer_head *bh) { loff_t pos = start, max = start, bh_max = start; - bool hole = false, need_wmb = false; + bool hole = false; struct block_device *bdev = NULL; int rw = iov_iter_rw(iter), rc; long map_len = 0; struct blk_dax_ctl dax = { - .addr = (void __pmem *) ERR_PTR(-EIO), + .addr = ERR_PTR(-EIO), }; unsigned blkbits = inode->i_blkbits; sector_t file_blks = (i_size_read(inode) + (1 << blkbits) - 1) @@ -218,7 +218,6 @@ static ssize_t dax_io(struct inode *inode, struct iov_iter *iter, if (iov_iter_rw(iter) == WRITE) { len = copy_from_iter_pmem(dax.addr, max - pos, iter); - need_wmb = true; } else if (!hole) len = copy_to_iter((void __force *) dax.addr, max - pos, iter); @@ -235,8 +234,6 @@ static ssize_t dax_io(struct inode *inode, struct iov_iter *iter, dax.addr += len; } - if (need_wmb) - wmb_pmem(); dax_unmap_atomic(bdev, &dax); return (pos == start) ? rc : pos - start; @@ -788,7 +785,6 @@ int dax_writeback_mapping_range(struct address_space *mapping, return ret; } } - wmb_pmem(); return 0; } EXPORT_SYMBOL_GPL(dax_writeback_mapping_range); @@ -819,16 +815,16 @@ static int dax_insert_mapping(struct address_space *mapping, } /** - * __dax_fault - handle a page fault on a DAX file + * dax_fault - handle a page fault on a DAX file * @vma: The virtual memory area where the fault occurred * @vmf: The description of the fault * @get_block: The filesystem method used to translate file offsets to blocks * * When a page fault occurs, filesystems may call this helper in their - * fault handler for DAX files. __dax_fault() assumes the caller has done all + * fault handler for DAX files. dax_fault() assumes the caller has done all * the necessary locking for the page fault to proceed successfully. */ -int __dax_fault(struct vm_area_struct *vma, struct vm_fault *vmf, +int dax_fault(struct vm_area_struct *vma, struct vm_fault *vmf, get_block_t get_block) { struct file *file = vma->vm_file; @@ -913,33 +909,6 @@ int __dax_fault(struct vm_area_struct *vma, struct vm_fault *vmf, return VM_FAULT_SIGBUS | major; return VM_FAULT_NOPAGE | major; } -EXPORT_SYMBOL(__dax_fault); - -/** - * dax_fault - handle a page fault on a DAX file - * @vma: The virtual memory area where the fault occurred - * @vmf: The description of the fault - * @get_block: The filesystem method used to translate file offsets to blocks - * - * When a page fault occurs, filesystems may call this helper in their - * fault handler for DAX files. - */ -int dax_fault(struct vm_area_struct *vma, struct vm_fault *vmf, - get_block_t get_block) -{ - int result; - struct super_block *sb = file_inode(vma->vm_file)->i_sb; - - if (vmf->flags & FAULT_FLAG_WRITE) { - sb_start_pagefault(sb); - file_update_time(vma->vm_file); - } - result = __dax_fault(vma, vmf, get_block); - if (vmf->flags & FAULT_FLAG_WRITE) - sb_end_pagefault(sb); - - return result; -} EXPORT_SYMBOL_GPL(dax_fault); #if defined(CONFIG_TRANSPARENT_HUGEPAGE) @@ -967,7 +936,16 @@ static void __dax_dbg(struct buffer_head *bh, unsigned long address, #define dax_pmd_dbg(bh, address, reason) __dax_dbg(bh, address, reason, "dax_pmd") -int __dax_pmd_fault(struct vm_area_struct *vma, unsigned long address, +/** + * dax_pmd_fault - handle a PMD fault on a DAX file + * @vma: The virtual memory area where the fault occurred + * @vmf: The description of the fault + * @get_block: The filesystem method used to translate file offsets to blocks + * + * When a page fault occurs, filesystems may call this helper in their + * pmd_fault handler for DAX files. + */ +int dax_pmd_fault(struct vm_area_struct *vma, unsigned long address, pmd_t *pmd, unsigned int flags, get_block_t get_block) { struct file *file = vma->vm_file; @@ -1119,7 +1097,7 @@ int __dax_pmd_fault(struct vm_area_struct *vma, unsigned long address, * * The PMD path doesn't have an equivalent to * dax_pfn_mkwrite(), though, so for a read followed by a - * write we traverse all the way through __dax_pmd_fault() + * write we traverse all the way through dax_pmd_fault() * twice. This means we can just skip inserting a radix tree * entry completely on the initial read and just wait until * the write to insert a dirty entry. @@ -1148,33 +1126,6 @@ int __dax_pmd_fault(struct vm_area_struct *vma, unsigned long address, result = VM_FAULT_FALLBACK; goto out; } -EXPORT_SYMBOL_GPL(__dax_pmd_fault); - -/** - * dax_pmd_fault - handle a PMD fault on a DAX file - * @vma: The virtual memory area where the fault occurred - * @vmf: The description of the fault - * @get_block: The filesystem method used to translate file offsets to blocks - * - * When a page fault occurs, filesystems may call this helper in their - * pmd_fault handler for DAX files. - */ -int dax_pmd_fault(struct vm_area_struct *vma, unsigned long address, - pmd_t *pmd, unsigned int flags, get_block_t get_block) -{ - int result; - struct super_block *sb = file_inode(vma->vm_file)->i_sb; - - if (flags & FAULT_FLAG_WRITE) { - sb_start_pagefault(sb); - file_update_time(vma->vm_file); - } - result = __dax_pmd_fault(vma, address, pmd, flags, get_block); - if (flags & FAULT_FLAG_WRITE) - sb_end_pagefault(sb); - - return result; -} EXPORT_SYMBOL_GPL(dax_pmd_fault); #endif /* CONFIG_TRANSPARENT_HUGEPAGE */ @@ -1232,7 +1183,6 @@ int __dax_zero_page_range(struct block_device *bdev, sector_t sector, if (dax_map_atomic(bdev, &dax) < 0) return PTR_ERR(dax.addr); clear_pmem(dax.addr + offset, length); - wmb_pmem(); dax_unmap_atomic(bdev, &dax); } return 0; diff --git a/fs/dcache.c b/fs/dcache.c index d6847d7b123d..b90cf8e09d5b 100644 --- a/fs/dcache.c +++ b/fs/dcache.c @@ -104,11 +104,9 @@ static unsigned int d_hash_shift __read_mostly; static struct hlist_bl_head *dentry_hashtable __read_mostly; -static inline struct hlist_bl_head *d_hash(const struct dentry *parent, - unsigned int hash) +static inline struct hlist_bl_head *d_hash(unsigned int hash) { - hash += (unsigned long) parent / L1_CACHE_BYTES; - return dentry_hashtable + hash_32(hash, d_hash_shift); + return dentry_hashtable + (hash >> (32 - d_hash_shift)); } #define IN_LOOKUP_SHIFT 10 @@ -226,10 +224,9 @@ static inline int dentry_string_cmp(const unsigned char *cs, const unsigned char static inline int dentry_cmp(const struct dentry *dentry, const unsigned char *ct, unsigned tcount) { - const unsigned char *cs; /* * Be careful about RCU walk racing with rename: - * use ACCESS_ONCE to fetch the name pointer. + * use 'lockless_dereference' to fetch the name pointer. * * NOTE! Even if a rename will mean that the length * was not loaded atomically, we don't care. The @@ -243,8 +240,8 @@ static inline int dentry_cmp(const struct dentry *dentry, const unsigned char *c * early because the data cannot match (there can * be no NUL in the ct/tcount data) */ - cs = ACCESS_ONCE(dentry->d_name.name); - smp_read_barrier_depends(); + const unsigned char *cs = lockless_dereference(dentry->d_name.name); + return dentry_string_cmp(cs, ct, tcount); } @@ -335,44 +332,21 @@ static inline void dentry_rcuwalk_invalidate(struct dentry *dentry) /* * Release the dentry's inode, using the filesystem - * d_iput() operation if defined. Dentry has no refcount - * and is unhashed. - */ -static void dentry_iput(struct dentry * dentry) - __releases(dentry->d_lock) - __releases(dentry->d_inode->i_lock) -{ - struct inode *inode = dentry->d_inode; - if (inode) { - __d_clear_type_and_inode(dentry); - hlist_del_init(&dentry->d_u.d_alias); - spin_unlock(&dentry->d_lock); - spin_unlock(&inode->i_lock); - if (!inode->i_nlink) - fsnotify_inoderemove(inode); - if (dentry->d_op && dentry->d_op->d_iput) - dentry->d_op->d_iput(dentry, inode); - else - iput(inode); - } else { - spin_unlock(&dentry->d_lock); - } -} - -/* - * Release the dentry's inode, using the filesystem - * d_iput() operation if defined. dentry remains in-use. + * d_iput() operation if defined. */ static void dentry_unlink_inode(struct dentry * dentry) __releases(dentry->d_lock) __releases(dentry->d_inode->i_lock) { struct inode *inode = dentry->d_inode; + bool hashed = !d_unhashed(dentry); - raw_write_seqcount_begin(&dentry->d_seq); + if (hashed) + raw_write_seqcount_begin(&dentry->d_seq); __d_clear_type_and_inode(dentry); hlist_del_init(&dentry->d_u.d_alias); - raw_write_seqcount_end(&dentry->d_seq); + if (hashed) + raw_write_seqcount_end(&dentry->d_seq); spin_unlock(&dentry->d_lock); spin_unlock(&inode->i_lock); if (!inode->i_nlink) @@ -488,7 +462,7 @@ void __d_drop(struct dentry *dentry) if (unlikely(IS_ROOT(dentry))) b = &dentry->d_sb->s_anon; else - b = d_hash(dentry->d_parent, dentry->d_name.hash); + b = d_hash(dentry->d_name.hash); hlist_bl_lock(b); __hlist_bl_del(&dentry->d_hash); @@ -573,12 +547,10 @@ static void __dentry_kill(struct dentry *dentry) dentry_unlist(dentry, parent); if (parent) spin_unlock(&parent->d_lock); - dentry_iput(dentry); - /* - * dentry_iput drops the locks, at which point nobody (except - * transient RCU lookups) can reach this dentry. - */ - BUG_ON(dentry->d_lockref.count > 0); + if (dentry->d_inode) + dentry_unlink_inode(dentry); + else + spin_unlock(&dentry->d_lock); this_cpu_dec(nr_dentry); if (dentry->d_op && dentry->d_op->d_release) dentry->d_op->d_release(dentry); @@ -622,7 +594,6 @@ static struct dentry *dentry_kill(struct dentry *dentry) failed: spin_unlock(&dentry->d_lock); - cpu_relax(); return dentry; /* try again with same dentry */ } @@ -796,6 +767,8 @@ void dput(struct dentry *dentry) return; repeat: + might_sleep(); + rcu_read_lock(); if (likely(fast_dput(dentry))) { rcu_read_unlock(); @@ -829,8 +802,10 @@ repeat: kill_it: dentry = dentry_kill(dentry); - if (dentry) + if (dentry) { + cond_resched(); goto repeat; + } } EXPORT_SYMBOL(dput); @@ -1595,6 +1570,7 @@ struct dentry *__d_alloc(struct super_block *sb, const struct qstr *name) { struct dentry *dentry; char *dname; + int err; dentry = kmem_cache_alloc(dentry_cache, GFP_KERNEL); if (!dentry) @@ -1653,6 +1629,16 @@ struct dentry *__d_alloc(struct super_block *sb, const struct qstr *name) INIT_LIST_HEAD(&dentry->d_child); d_set_d_op(dentry, dentry->d_sb->s_d_op); + if (dentry->d_op && dentry->d_op->d_init) { + err = dentry->d_op->d_init(dentry); + if (err) { + if (dname_external(dentry)) + kfree(external_name(dentry)); + kmem_cache_free(dentry_cache, dentry); + return NULL; + } + } + this_cpu_inc(nr_dentry); return dentry; @@ -1716,7 +1702,7 @@ struct dentry *d_alloc_name(struct dentry *parent, const char *name) struct qstr q; q.name = name; - q.hash_len = hashlen_string(name); + q.hash_len = hashlen_string(parent, name); return d_alloc(parent, &q); } EXPORT_SYMBOL(d_alloc_name); @@ -1729,7 +1715,6 @@ void d_set_d_op(struct dentry *dentry, const struct dentry_operations *op) DCACHE_OP_REVALIDATE | DCACHE_OP_WEAK_REVALIDATE | DCACHE_OP_DELETE | - DCACHE_OP_SELECT_INODE | DCACHE_OP_REAL)); dentry->d_op = op; if (!op) @@ -1746,8 +1731,6 @@ void d_set_d_op(struct dentry *dentry, const struct dentry_operations *op) dentry->d_flags |= DCACHE_OP_DELETE; if (op->d_prune) dentry->d_flags |= DCACHE_OP_PRUNE; - if (op->d_select_inode) - dentry->d_flags |= DCACHE_OP_SELECT_INODE; if (op->d_real) dentry->d_flags |= DCACHE_OP_REAL; @@ -1815,7 +1798,7 @@ static void __d_instantiate(struct dentry *dentry, struct inode *inode) raw_write_seqcount_begin(&dentry->d_seq); __d_set_inode_and_type(dentry, inode, add_flags); raw_write_seqcount_end(&dentry->d_seq); - __fsnotify_d_instantiate(dentry); + fsnotify_update_flags(dentry); spin_unlock(&dentry->d_lock); } @@ -2067,42 +2050,19 @@ struct dentry *d_add_ci(struct dentry *dentry, struct inode *inode, } EXPORT_SYMBOL(d_add_ci); -/* - * Do the slow-case of the dentry name compare. - * - * Unlike the dentry_cmp() function, we need to atomically - * load the name and length information, so that the - * filesystem can rely on them, and can use the 'name' and - * 'len' information without worrying about walking off the - * end of memory etc. - * - * Thus the read_seqcount_retry() and the "duplicate" info - * in arguments (the low-level filesystem should not look - * at the dentry inode or name contents directly, since - * rename can change them while we're in RCU mode). - */ -enum slow_d_compare { - D_COMP_OK, - D_COMP_NOMATCH, - D_COMP_SEQRETRY, -}; -static noinline enum slow_d_compare slow_dentry_cmp( - const struct dentry *parent, - struct dentry *dentry, - unsigned int seq, - const struct qstr *name) +static inline bool d_same_name(const struct dentry *dentry, + const struct dentry *parent, + const struct qstr *name) { - int tlen = dentry->d_name.len; - const char *tname = dentry->d_name.name; - - if (read_seqcount_retry(&dentry->d_seq, seq)) { - cpu_relax(); - return D_COMP_SEQRETRY; + if (likely(!(parent->d_flags & DCACHE_OP_COMPARE))) { + if (dentry->d_name.len != name->len) + return false; + return dentry_cmp(dentry, name->name, name->len) == 0; } - if (parent->d_op->d_compare(parent, dentry, tlen, tname, name)) - return D_COMP_NOMATCH; - return D_COMP_OK; + return parent->d_op->d_compare(parent, dentry, + dentry->d_name.len, dentry->d_name.name, + name) == 0; } /** @@ -2140,7 +2100,7 @@ struct dentry *__d_lookup_rcu(const struct dentry *parent, { u64 hashlen = name->hash_len; const unsigned char *str = name->name; - struct hlist_bl_head *b = d_hash(parent, hashlen_hash(hashlen)); + struct hlist_bl_head *b = d_hash(hashlen_hash(hashlen)); struct hlist_bl_node *node; struct dentry *dentry; @@ -2181,6 +2141,9 @@ seqretry: * dentry compare, we will do seqretries until it is stable, * and if we end up with a successful lookup, we actually * want to exit RCU lookup anyway. + * + * Note that raw_seqcount_begin still *does* smp_rmb(), so + * we are still guaranteed NUL-termination of ->d_name.name. */ seq = raw_seqcount_begin(&dentry->d_seq); if (dentry->d_parent != parent) @@ -2189,24 +2152,28 @@ seqretry: continue; if (unlikely(parent->d_flags & DCACHE_OP_COMPARE)) { + int tlen; + const char *tname; if (dentry->d_name.hash != hashlen_hash(hashlen)) continue; - *seqp = seq; - switch (slow_dentry_cmp(parent, dentry, seq, name)) { - case D_COMP_OK: - return dentry; - case D_COMP_NOMATCH: - continue; - default: + tlen = dentry->d_name.len; + tname = dentry->d_name.name; + /* we want a consistent (name,len) pair */ + if (read_seqcount_retry(&dentry->d_seq, seq)) { + cpu_relax(); goto seqretry; } + if (parent->d_op->d_compare(parent, dentry, + tlen, tname, name) != 0) + continue; + } else { + if (dentry->d_name.hash_len != hashlen) + continue; + if (dentry_cmp(dentry, str, hashlen_len(hashlen)) != 0) + continue; } - - if (dentry->d_name.hash_len != hashlen) - continue; *seqp = seq; - if (!dentry_cmp(dentry, str, hashlen_len(hashlen))) - return dentry; + return dentry; } return NULL; } @@ -2254,10 +2221,8 @@ EXPORT_SYMBOL(d_lookup); */ struct dentry *__d_lookup(const struct dentry *parent, const struct qstr *name) { - unsigned int len = name->len; unsigned int hash = name->hash; - const unsigned char *str = name->name; - struct hlist_bl_head *b = d_hash(parent, hash); + struct hlist_bl_head *b = d_hash(hash); struct hlist_bl_node *node; struct dentry *found = NULL; struct dentry *dentry; @@ -2295,21 +2260,8 @@ struct dentry *__d_lookup(const struct dentry *parent, const struct qstr *name) if (d_unhashed(dentry)) goto next; - /* - * It is safe to compare names since d_move() cannot - * change the qstr (protected by d_lock). - */ - if (parent->d_flags & DCACHE_OP_COMPARE) { - int tlen = dentry->d_name.len; - const char *tname = dentry->d_name.name; - if (parent->d_op->d_compare(parent, dentry, tlen, tname, name)) - goto next; - } else { - if (dentry->d_name.len != len) - goto next; - if (dentry_cmp(dentry, str, len)) - goto next; - } + if (!d_same_name(dentry, parent, name)) + goto next; dentry->d_lockref.count++; found = dentry; @@ -2337,7 +2289,7 @@ struct dentry *d_hash_and_lookup(struct dentry *dir, struct qstr *name) * calculate the standard hash first, as the d_op->d_hash() * routine may choose to leave the hash value unchanged. */ - name->hash = full_name_hash(name->name, name->len); + name->hash = full_name_hash(dir, name->name, name->len); if (dir->d_flags & DCACHE_OP_HASH) { int err = dir->d_op->d_hash(dir, name); if (unlikely(err < 0)) @@ -2410,7 +2362,7 @@ static void __d_rehash(struct dentry * entry, struct hlist_bl_head *b) static void _d_rehash(struct dentry * entry) { - __d_rehash(entry, d_hash(entry->d_parent, entry->d_name.hash)); + __d_rehash(entry, d_hash(entry->d_name.hash)); } /** @@ -2462,9 +2414,7 @@ struct dentry *d_alloc_parallel(struct dentry *parent, const struct qstr *name, wait_queue_head_t *wq) { - unsigned int len = name->len; unsigned int hash = name->hash; - const unsigned char *str = name->name; struct hlist_bl_head *b = in_lookup_hash(parent, hash); struct hlist_bl_node *node; struct dentry *new = d_alloc(parent, name); @@ -2515,17 +2465,8 @@ retry: continue; if (dentry->d_parent != parent) continue; - if (parent->d_flags & DCACHE_OP_COMPARE) { - int tlen = dentry->d_name.len; - const char *tname = dentry->d_name.name; - if (parent->d_op->d_compare(parent, dentry, tlen, tname, name)) - continue; - } else { - if (dentry->d_name.len != len) - continue; - if (dentry_cmp(dentry, str, len)) - continue; - } + if (!d_same_name(dentry, parent, name)) + continue; hlist_bl_unlock(b); /* now we can try to grab a reference */ if (!lockref_get_not_dead(&dentry->d_lockref)) { @@ -2552,17 +2493,8 @@ retry: goto mismatch; if (unlikely(d_unhashed(dentry))) goto mismatch; - if (parent->d_flags & DCACHE_OP_COMPARE) { - int tlen = dentry->d_name.len; - const char *tname = dentry->d_name.name; - if (parent->d_op->d_compare(parent, dentry, tlen, tname, name)) - goto mismatch; - } else { - if (unlikely(dentry->d_name.len != len)) - goto mismatch; - if (unlikely(dentry_cmp(dentry, str, len))) - goto mismatch; - } + if (unlikely(!d_same_name(dentry, parent, name))) + goto mismatch; /* OK, it *is* a hashed match; return it */ spin_unlock(&dentry->d_lock); dput(new); @@ -2615,7 +2547,7 @@ static inline void __d_add(struct dentry *dentry, struct inode *inode) raw_write_seqcount_begin(&dentry->d_seq); __d_set_inode_and_type(dentry, inode, add_flags); raw_write_seqcount_end(&dentry->d_seq); - __fsnotify_d_instantiate(dentry); + fsnotify_update_flags(dentry); } _d_rehash(dentry); if (dir) @@ -2658,8 +2590,6 @@ EXPORT_SYMBOL(d_add); struct dentry *d_exact_alias(struct dentry *entry, struct inode *inode) { struct dentry *alias; - int len = entry->d_name.len; - const char *name = entry->d_name.name; unsigned int hash = entry->d_name.hash; spin_lock(&inode->i_lock); @@ -2673,9 +2603,7 @@ struct dentry *d_exact_alias(struct dentry *entry, struct inode *inode) continue; if (alias->d_parent != entry->d_parent) continue; - if (alias->d_name.len != len) - continue; - if (dentry_cmp(alias, name, len)) + if (!d_same_name(alias, entry->d_parent, &entry->d_name)) continue; spin_lock(&alias->d_lock); if (!d_unhashed(alias)) { @@ -2874,7 +2802,7 @@ static void __d_move(struct dentry *dentry, struct dentry *target, * for the same hash queue because of how unlikely it is. */ __d_drop(dentry); - __d_rehash(dentry, d_hash(target->d_parent, target->d_name.hash)); + __d_rehash(dentry, d_hash(target->d_name.hash)); /* * Unhash the target (d_delete() is not usable here). If exchanging @@ -2882,8 +2810,7 @@ static void __d_move(struct dentry *dentry, struct dentry *target, */ __d_drop(target); if (exchange) { - __d_rehash(target, - d_hash(dentry->d_parent, dentry->d_name.hash)); + __d_rehash(target, d_hash(dentry->d_name.hash)); } /* Switch the names.. */ @@ -2906,8 +2833,8 @@ static void __d_move(struct dentry *dentry, struct dentry *target, list_move(&target->d_child, &target->d_parent->d_subdirs); list_move(&dentry->d_child, &dentry->d_parent->d_subdirs); if (exchange) - fsnotify_d_move(target); - fsnotify_d_move(dentry); + fsnotify_update_flags(target); + fsnotify_update_flags(dentry); } write_seqcount_end(&target->d_seq); diff --git a/fs/debugfs/inode.c b/fs/debugfs/inode.c index 4bc1f68243c1..72361baf9da7 100644 --- a/fs/debugfs/inode.c +++ b/fs/debugfs/inode.c @@ -621,9 +621,6 @@ void debugfs_remove(struct dentry *dentry) return; parent = dentry->d_parent; - if (!parent || d_really_is_negative(parent)) - return; - inode_lock(d_inode(parent)); ret = __debugfs_remove(dentry, parent); inode_unlock(d_inode(parent)); @@ -654,10 +651,6 @@ void debugfs_remove_recursive(struct dentry *dentry) if (IS_ERR_OR_NULL(dentry)) return; - parent = dentry->d_parent; - if (!parent || d_really_is_negative(parent)) - return; - parent = dentry; down: inode_lock(d_inode(parent)); diff --git a/fs/dlm/config.c b/fs/dlm/config.c index 1669f6291c95..df955d2209ce 100644 --- a/fs/dlm/config.c +++ b/fs/dlm/config.c @@ -73,6 +73,7 @@ struct dlm_cluster { unsigned int cl_toss_secs; unsigned int cl_scan_secs; unsigned int cl_log_debug; + unsigned int cl_log_info; unsigned int cl_protocol; unsigned int cl_timewarn_cs; unsigned int cl_waitwarn_us; @@ -95,6 +96,7 @@ enum { CLUSTER_ATTR_TOSS_SECS, CLUSTER_ATTR_SCAN_SECS, CLUSTER_ATTR_LOG_DEBUG, + CLUSTER_ATTR_LOG_INFO, CLUSTER_ATTR_PROTOCOL, CLUSTER_ATTR_TIMEWARN_CS, CLUSTER_ATTR_WAITWARN_US, @@ -166,6 +168,7 @@ CLUSTER_ATTR(recover_timer, 1); CLUSTER_ATTR(toss_secs, 1); CLUSTER_ATTR(scan_secs, 1); CLUSTER_ATTR(log_debug, 0); +CLUSTER_ATTR(log_info, 0); CLUSTER_ATTR(protocol, 0); CLUSTER_ATTR(timewarn_cs, 1); CLUSTER_ATTR(waitwarn_us, 0); @@ -180,6 +183,7 @@ static struct configfs_attribute *cluster_attrs[] = { [CLUSTER_ATTR_TOSS_SECS] = &cluster_attr_toss_secs, [CLUSTER_ATTR_SCAN_SECS] = &cluster_attr_scan_secs, [CLUSTER_ATTR_LOG_DEBUG] = &cluster_attr_log_debug, + [CLUSTER_ATTR_LOG_INFO] = &cluster_attr_log_info, [CLUSTER_ATTR_PROTOCOL] = &cluster_attr_protocol, [CLUSTER_ATTR_TIMEWARN_CS] = &cluster_attr_timewarn_cs, [CLUSTER_ATTR_WAITWARN_US] = &cluster_attr_waitwarn_us, @@ -365,6 +369,7 @@ static struct config_group *make_cluster(struct config_group *g, cl->cl_toss_secs = dlm_config.ci_toss_secs; cl->cl_scan_secs = dlm_config.ci_scan_secs; cl->cl_log_debug = dlm_config.ci_log_debug; + cl->cl_log_info = dlm_config.ci_log_info; cl->cl_protocol = dlm_config.ci_protocol; cl->cl_timewarn_cs = dlm_config.ci_timewarn_cs; cl->cl_waitwarn_us = dlm_config.ci_waitwarn_us; @@ -850,6 +855,7 @@ int dlm_our_addr(struct sockaddr_storage *addr, int num) #define DEFAULT_TOSS_SECS 10 #define DEFAULT_SCAN_SECS 5 #define DEFAULT_LOG_DEBUG 0 +#define DEFAULT_LOG_INFO 1 #define DEFAULT_PROTOCOL 0 #define DEFAULT_TIMEWARN_CS 500 /* 5 sec = 500 centiseconds */ #define DEFAULT_WAITWARN_US 0 @@ -865,6 +871,7 @@ struct dlm_config_info dlm_config = { .ci_toss_secs = DEFAULT_TOSS_SECS, .ci_scan_secs = DEFAULT_SCAN_SECS, .ci_log_debug = DEFAULT_LOG_DEBUG, + .ci_log_info = DEFAULT_LOG_INFO, .ci_protocol = DEFAULT_PROTOCOL, .ci_timewarn_cs = DEFAULT_TIMEWARN_CS, .ci_waitwarn_us = DEFAULT_WAITWARN_US, diff --git a/fs/dlm/config.h b/fs/dlm/config.h index f30697bc2780..6041eec886ab 100644 --- a/fs/dlm/config.h +++ b/fs/dlm/config.h @@ -31,6 +31,7 @@ struct dlm_config_info { int ci_toss_secs; int ci_scan_secs; int ci_log_debug; + int ci_log_info; int ci_protocol; int ci_timewarn_cs; int ci_waitwarn_us; diff --git a/fs/dlm/dlm_internal.h b/fs/dlm/dlm_internal.h index 5eff6ea3e27f..216b61604ef9 100644 --- a/fs/dlm/dlm_internal.h +++ b/fs/dlm/dlm_internal.h @@ -65,8 +65,16 @@ struct dlm_mhandle; printk(KERN_ERR "dlm: "fmt"\n" , ##args) #define log_error(ls, fmt, args...) \ printk(KERN_ERR "dlm: %s: " fmt "\n", (ls)->ls_name , ##args) + #define log_rinfo(ls, fmt, args...) \ - printk(KERN_INFO "dlm: %s: " fmt "\n", (ls)->ls_name , ##args); +do { \ + if (dlm_config.ci_log_info) \ + printk(KERN_INFO "dlm: %s: " fmt "\n", \ + (ls)->ls_name, ##args); \ + else if (dlm_config.ci_log_debug) \ + printk(KERN_DEBUG "dlm: %s: " fmt "\n", \ + (ls)->ls_name , ##args); \ +} while (0) #define log_debug(ls, fmt, args...) \ do { \ diff --git a/fs/dlm/lowcomms.c b/fs/dlm/lowcomms.c index 1ab012a27d9f..963016c8f3d1 100644 --- a/fs/dlm/lowcomms.c +++ b/fs/dlm/lowcomms.c @@ -1279,10 +1279,9 @@ static void init_local(void) if (dlm_our_addr(&sas, i)) break; - addr = kmalloc(sizeof(*addr), GFP_NOFS); + addr = kmemdup(&sas, sizeof(*addr), GFP_NOFS); if (!addr) break; - memcpy(addr, &sas, sizeof(*addr)); dlm_local_addr[dlm_local_count++] = addr; } } diff --git a/fs/efivarfs/super.c b/fs/efivarfs/super.c index 9cb54a38832d..a5e607e8f056 100644 --- a/fs/efivarfs/super.c +++ b/fs/efivarfs/super.c @@ -65,7 +65,7 @@ static int efivarfs_d_compare(const struct dentry *parent, static int efivarfs_d_hash(const struct dentry *dentry, struct qstr *qstr) { - unsigned long hash = init_name_hash(); + unsigned long hash = init_name_hash(dentry); const unsigned char *s = qstr->name; unsigned int len = qstr->len; @@ -98,7 +98,7 @@ static struct dentry *efivarfs_alloc_dentry(struct dentry *parent, char *name) q.name = name; q.len = strlen(name); - err = efivarfs_d_hash(NULL, &q); + err = efivarfs_d_hash(parent, &q); if (err) return ERR_PTR(err); diff --git a/fs/ext2/balloc.c b/fs/ext2/balloc.c index 9f9992b37924..4c40c0786e16 100644 --- a/fs/ext2/balloc.c +++ b/fs/ext2/balloc.c @@ -1194,6 +1194,27 @@ static int ext2_has_free_blocks(struct ext2_sb_info *sbi) } /* + * Returns 1 if the passed-in block region is valid; 0 if some part overlaps + * with filesystem metadata blocksi. + */ +int ext2_data_block_valid(struct ext2_sb_info *sbi, ext2_fsblk_t start_blk, + unsigned int count) +{ + if ((start_blk <= le32_to_cpu(sbi->s_es->s_first_data_block)) || + (start_blk + count < start_blk) || + (start_blk > le32_to_cpu(sbi->s_es->s_blocks_count))) + return 0; + + /* Ensure we do not step over superblock */ + if ((start_blk <= sbi->s_sb_block) && + (start_blk + count >= sbi->s_sb_block)) + return 0; + + + return 1; +} + +/* * ext2_new_blocks() -- core block(s) allocation function * @inode: file inode * @goal: given target block(filesystem wide) diff --git a/fs/ext2/ext2.h b/fs/ext2/ext2.h index 170939f379d7..3fb93681bf7f 100644 --- a/fs/ext2/ext2.h +++ b/fs/ext2/ext2.h @@ -367,6 +367,7 @@ struct ext2_inode { */ #define EXT2_VALID_FS 0x0001 /* Unmounted cleanly */ #define EXT2_ERROR_FS 0x0002 /* Errors detected */ +#define EFSCORRUPTED EUCLEAN /* Filesystem is corrupted */ /* * Mount flags @@ -739,6 +740,8 @@ 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 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 unsigned long ext2_count_free_blocks (struct super_block *); diff --git a/fs/ext2/file.c b/fs/ext2/file.c index 868c02317b05..5efeefe17abb 100644 --- a/fs/ext2/file.c +++ b/fs/ext2/file.c @@ -51,7 +51,7 @@ static int ext2_dax_fault(struct vm_area_struct *vma, struct vm_fault *vmf) } down_read(&ei->dax_sem); - ret = __dax_fault(vma, vmf, ext2_get_block); + ret = dax_fault(vma, vmf, ext2_get_block); up_read(&ei->dax_sem); if (vmf->flags & FAULT_FLAG_WRITE) @@ -72,7 +72,7 @@ static int ext2_dax_pmd_fault(struct vm_area_struct *vma, unsigned long addr, } down_read(&ei->dax_sem); - ret = __dax_pmd_fault(vma, addr, pmd, flags, ext2_get_block); + ret = dax_pmd_fault(vma, addr, pmd, flags, ext2_get_block); up_read(&ei->dax_sem); if (flags & FAULT_FLAG_WRITE) diff --git a/fs/ext2/inode.c b/fs/ext2/inode.c index fcbe58641e40..d5c7d09919f3 100644 --- a/fs/ext2/inode.c +++ b/fs/ext2/inode.c @@ -1389,6 +1389,16 @@ struct inode *ext2_iget (struct super_block *sb, unsigned long ino) ei->i_frag_size = raw_inode->i_fsize; ei->i_file_acl = le32_to_cpu(raw_inode->i_file_acl); ei->i_dir_acl = 0; + + if (ei->i_file_acl && + !ext2_data_block_valid(EXT2_SB(sb), ei->i_file_acl, 1)) { + ext2_error(sb, "ext2_iget", "bad extended attribute block %u", + ei->i_file_acl); + brelse(bh); + ret = -EFSCORRUPTED; + goto bad_inode; + } + if (S_ISREG(inode->i_mode)) inode->i_size |= ((__u64)le32_to_cpu(raw_inode->i_size_high)) << 32; else diff --git a/fs/ext2/xattr.c b/fs/ext2/xattr.c index 1a5e3bff0b63..b7f896f3f7a7 100644 --- a/fs/ext2/xattr.c +++ b/fs/ext2/xattr.c @@ -759,10 +759,19 @@ void ext2_xattr_delete_inode(struct inode *inode) { struct buffer_head *bh = NULL; + struct ext2_sb_info *sbi = EXT2_SB(inode->i_sb); down_write(&EXT2_I(inode)->xattr_sem); if (!EXT2_I(inode)->i_file_acl) goto cleanup; + + if (!ext2_data_block_valid(sbi, EXT2_I(inode)->i_file_acl, 0)) { + ext2_error(inode->i_sb, "ext2_xattr_delete_inode", + "inode %ld: xattr block %d is out of data blocks range", + inode->i_ino, EXT2_I(inode)->i_file_acl); + goto cleanup; + } + bh = sb_bread(inode->i_sb, EXT2_I(inode)->i_file_acl); if (!bh) { ext2_error(inode->i_sb, "ext2_xattr_delete_inode", diff --git a/fs/ext4/Kconfig b/fs/ext4/Kconfig index b46e9fc64196..e38039fd96ff 100644 --- a/fs/ext4/Kconfig +++ b/fs/ext4/Kconfig @@ -99,17 +99,9 @@ config EXT4_FS_SECURITY extended attributes for file security labels, say N. config EXT4_ENCRYPTION - tristate "Ext4 Encryption" + bool "Ext4 Encryption" depends on EXT4_FS - select CRYPTO_AES - select CRYPTO_CBC - select CRYPTO_ECB - select CRYPTO_XTS - select CRYPTO_CTS - select CRYPTO_CTR - select CRYPTO_SHA256 - select KEYS - select ENCRYPTED_KEYS + select FS_ENCRYPTION help Enable encryption of ext4 files and directories. This feature is similar to ecryptfs, but it is more memory diff --git a/fs/ext4/Makefile b/fs/ext4/Makefile index f52cf54f0cbc..354103f3490c 100644 --- a/fs/ext4/Makefile +++ b/fs/ext4/Makefile @@ -12,5 +12,3 @@ ext4-y := balloc.o bitmap.o dir.o file.o fsync.o ialloc.o inode.o page-io.o \ ext4-$(CONFIG_EXT4_FS_POSIX_ACL) += acl.o ext4-$(CONFIG_EXT4_FS_SECURITY) += xattr_security.o -ext4-$(CONFIG_EXT4_FS_ENCRYPTION) += crypto_policy.o crypto.o \ - crypto_key.o crypto_fname.o diff --git a/fs/ext4/balloc.c b/fs/ext4/balloc.c index a806b58e4646..e04ec868e37e 100644 --- a/fs/ext4/balloc.c +++ b/fs/ext4/balloc.c @@ -208,6 +208,9 @@ static int ext4_init_block_bitmap(struct super_block *sb, memset(bh->b_data, 0, sb->s_blocksize); bit_max = ext4_num_base_meta_clusters(sb, block_group); + if ((bit_max >> 3) >= bh->b_size) + return -EFSCORRUPTED; + for (bit = 0; bit < bit_max; bit++) ext4_set_bit(bit, bh->b_data); @@ -610,7 +613,9 @@ int ext4_should_retry_alloc(struct super_block *sb, int *retries) jbd_debug(1, "%s: retrying operation after ENOSPC\n", sb->s_id); - jbd2_journal_force_commit_nested(EXT4_SB(sb)->s_journal); + smp_mb(); + if (EXT4_SB(sb)->s_mb_free_pending) + jbd2_journal_force_commit_nested(EXT4_SB(sb)->s_journal); return 1; } diff --git a/fs/ext4/crypto.c b/fs/ext4/crypto.c deleted file mode 100644 index d3fa47c2b8a3..000000000000 --- a/fs/ext4/crypto.c +++ /dev/null @@ -1,537 +0,0 @@ -/* - * linux/fs/ext4/crypto.c - * - * Copyright (C) 2015, Google, Inc. - * - * This contains encryption functions for ext4 - * - * Written by Michael Halcrow, 2014. - * - * Filename encryption additions - * Uday Savagaonkar, 2014 - * Encryption policy handling additions - * Ildar Muslukhov, 2014 - * - * This has not yet undergone a rigorous security audit. - * - * The usage of AES-XTS should conform to recommendations in NIST - * Special Publication 800-38E and IEEE P1619/D16. - */ - -#include <crypto/skcipher.h> -#include <keys/user-type.h> -#include <keys/encrypted-type.h> -#include <linux/ecryptfs.h> -#include <linux/gfp.h> -#include <linux/kernel.h> -#include <linux/key.h> -#include <linux/list.h> -#include <linux/mempool.h> -#include <linux/module.h> -#include <linux/mutex.h> -#include <linux/random.h> -#include <linux/scatterlist.h> -#include <linux/spinlock_types.h> -#include <linux/namei.h> - -#include "ext4_extents.h" -#include "xattr.h" - -/* Encryption added and removed here! (L: */ - -static unsigned int num_prealloc_crypto_pages = 32; -static unsigned int num_prealloc_crypto_ctxs = 128; - -module_param(num_prealloc_crypto_pages, uint, 0444); -MODULE_PARM_DESC(num_prealloc_crypto_pages, - "Number of crypto pages to preallocate"); -module_param(num_prealloc_crypto_ctxs, uint, 0444); -MODULE_PARM_DESC(num_prealloc_crypto_ctxs, - "Number of crypto contexts to preallocate"); - -static mempool_t *ext4_bounce_page_pool; - -static LIST_HEAD(ext4_free_crypto_ctxs); -static DEFINE_SPINLOCK(ext4_crypto_ctx_lock); - -static struct kmem_cache *ext4_crypto_ctx_cachep; -struct kmem_cache *ext4_crypt_info_cachep; - -/** - * ext4_release_crypto_ctx() - Releases an encryption context - * @ctx: The encryption context to release. - * - * If the encryption context was allocated from the pre-allocated pool, returns - * it to that pool. Else, frees it. - * - * If there's a bounce page in the context, this frees that. - */ -void ext4_release_crypto_ctx(struct ext4_crypto_ctx *ctx) -{ - unsigned long flags; - - if (ctx->flags & EXT4_WRITE_PATH_FL && ctx->w.bounce_page) - mempool_free(ctx->w.bounce_page, ext4_bounce_page_pool); - ctx->w.bounce_page = NULL; - ctx->w.control_page = NULL; - if (ctx->flags & EXT4_CTX_REQUIRES_FREE_ENCRYPT_FL) { - kmem_cache_free(ext4_crypto_ctx_cachep, ctx); - } else { - spin_lock_irqsave(&ext4_crypto_ctx_lock, flags); - list_add(&ctx->free_list, &ext4_free_crypto_ctxs); - spin_unlock_irqrestore(&ext4_crypto_ctx_lock, flags); - } -} - -/** - * ext4_get_crypto_ctx() - Gets an encryption context - * @inode: The inode for which we are doing the crypto - * - * Allocates and initializes an encryption context. - * - * Return: An allocated and initialized encryption context on success; error - * value or NULL otherwise. - */ -struct ext4_crypto_ctx *ext4_get_crypto_ctx(struct inode *inode, - gfp_t gfp_flags) -{ - struct ext4_crypto_ctx *ctx = NULL; - int res = 0; - unsigned long flags; - struct ext4_crypt_info *ci = EXT4_I(inode)->i_crypt_info; - - if (ci == NULL) - return ERR_PTR(-ENOKEY); - - /* - * We first try getting the ctx from a free list because in - * the common case the ctx will have an allocated and - * initialized crypto tfm, so it's probably a worthwhile - * optimization. For the bounce page, we first try getting it - * from the kernel allocator because that's just about as fast - * as getting it from a list and because a cache of free pages - * should generally be a "last resort" option for a filesystem - * to be able to do its job. - */ - spin_lock_irqsave(&ext4_crypto_ctx_lock, flags); - ctx = list_first_entry_or_null(&ext4_free_crypto_ctxs, - struct ext4_crypto_ctx, free_list); - if (ctx) - list_del(&ctx->free_list); - spin_unlock_irqrestore(&ext4_crypto_ctx_lock, flags); - if (!ctx) { - ctx = kmem_cache_zalloc(ext4_crypto_ctx_cachep, gfp_flags); - if (!ctx) { - res = -ENOMEM; - goto out; - } - ctx->flags |= EXT4_CTX_REQUIRES_FREE_ENCRYPT_FL; - } else { - ctx->flags &= ~EXT4_CTX_REQUIRES_FREE_ENCRYPT_FL; - } - ctx->flags &= ~EXT4_WRITE_PATH_FL; - -out: - if (res) { - if (!IS_ERR_OR_NULL(ctx)) - ext4_release_crypto_ctx(ctx); - ctx = ERR_PTR(res); - } - return ctx; -} - -struct workqueue_struct *ext4_read_workqueue; -static DEFINE_MUTEX(crypto_init); - -/** - * ext4_exit_crypto() - Shutdown the ext4 encryption system - */ -void ext4_exit_crypto(void) -{ - struct ext4_crypto_ctx *pos, *n; - - list_for_each_entry_safe(pos, n, &ext4_free_crypto_ctxs, free_list) - kmem_cache_free(ext4_crypto_ctx_cachep, pos); - INIT_LIST_HEAD(&ext4_free_crypto_ctxs); - if (ext4_bounce_page_pool) - mempool_destroy(ext4_bounce_page_pool); - ext4_bounce_page_pool = NULL; - if (ext4_read_workqueue) - destroy_workqueue(ext4_read_workqueue); - ext4_read_workqueue = NULL; - if (ext4_crypto_ctx_cachep) - kmem_cache_destroy(ext4_crypto_ctx_cachep); - ext4_crypto_ctx_cachep = NULL; - if (ext4_crypt_info_cachep) - kmem_cache_destroy(ext4_crypt_info_cachep); - ext4_crypt_info_cachep = NULL; -} - -/** - * ext4_init_crypto() - Set up for ext4 encryption. - * - * We only call this when we start accessing encrypted files, since it - * results in memory getting allocated that wouldn't otherwise be used. - * - * Return: Zero on success, non-zero otherwise. - */ -int ext4_init_crypto(void) -{ - int i, res = -ENOMEM; - - mutex_lock(&crypto_init); - if (ext4_read_workqueue) - goto already_initialized; - ext4_read_workqueue = alloc_workqueue("ext4_crypto", WQ_HIGHPRI, 0); - if (!ext4_read_workqueue) - goto fail; - - ext4_crypto_ctx_cachep = KMEM_CACHE(ext4_crypto_ctx, - SLAB_RECLAIM_ACCOUNT); - if (!ext4_crypto_ctx_cachep) - goto fail; - - ext4_crypt_info_cachep = KMEM_CACHE(ext4_crypt_info, - SLAB_RECLAIM_ACCOUNT); - if (!ext4_crypt_info_cachep) - goto fail; - - for (i = 0; i < num_prealloc_crypto_ctxs; i++) { - struct ext4_crypto_ctx *ctx; - - ctx = kmem_cache_zalloc(ext4_crypto_ctx_cachep, GFP_NOFS); - if (!ctx) { - res = -ENOMEM; - goto fail; - } - list_add(&ctx->free_list, &ext4_free_crypto_ctxs); - } - - ext4_bounce_page_pool = - mempool_create_page_pool(num_prealloc_crypto_pages, 0); - if (!ext4_bounce_page_pool) { - res = -ENOMEM; - goto fail; - } -already_initialized: - mutex_unlock(&crypto_init); - return 0; -fail: - ext4_exit_crypto(); - mutex_unlock(&crypto_init); - return res; -} - -void ext4_restore_control_page(struct page *data_page) -{ - struct ext4_crypto_ctx *ctx = - (struct ext4_crypto_ctx *)page_private(data_page); - - set_page_private(data_page, (unsigned long)NULL); - ClearPagePrivate(data_page); - unlock_page(data_page); - ext4_release_crypto_ctx(ctx); -} - -/** - * ext4_crypt_complete() - The completion callback for page encryption - * @req: The asynchronous encryption request context - * @res: The result of the encryption operation - */ -static void ext4_crypt_complete(struct crypto_async_request *req, int res) -{ - struct ext4_completion_result *ecr = req->data; - - if (res == -EINPROGRESS) - return; - ecr->res = res; - complete(&ecr->completion); -} - -typedef enum { - EXT4_DECRYPT = 0, - EXT4_ENCRYPT, -} ext4_direction_t; - -static int ext4_page_crypto(struct inode *inode, - ext4_direction_t rw, - pgoff_t index, - struct page *src_page, - struct page *dest_page, - gfp_t gfp_flags) - -{ - u8 xts_tweak[EXT4_XTS_TWEAK_SIZE]; - struct skcipher_request *req = NULL; - DECLARE_EXT4_COMPLETION_RESULT(ecr); - struct scatterlist dst, src; - struct ext4_crypt_info *ci = EXT4_I(inode)->i_crypt_info; - struct crypto_skcipher *tfm = ci->ci_ctfm; - int res = 0; - - req = skcipher_request_alloc(tfm, gfp_flags); - if (!req) { - printk_ratelimited(KERN_ERR - "%s: crypto_request_alloc() failed\n", - __func__); - return -ENOMEM; - } - skcipher_request_set_callback( - req, CRYPTO_TFM_REQ_MAY_BACKLOG | CRYPTO_TFM_REQ_MAY_SLEEP, - ext4_crypt_complete, &ecr); - - BUILD_BUG_ON(EXT4_XTS_TWEAK_SIZE < sizeof(index)); - memcpy(xts_tweak, &index, sizeof(index)); - memset(&xts_tweak[sizeof(index)], 0, - EXT4_XTS_TWEAK_SIZE - sizeof(index)); - - sg_init_table(&dst, 1); - sg_set_page(&dst, dest_page, PAGE_SIZE, 0); - sg_init_table(&src, 1); - sg_set_page(&src, src_page, PAGE_SIZE, 0); - skcipher_request_set_crypt(req, &src, &dst, PAGE_SIZE, - xts_tweak); - if (rw == EXT4_DECRYPT) - res = crypto_skcipher_decrypt(req); - else - res = crypto_skcipher_encrypt(req); - if (res == -EINPROGRESS || res == -EBUSY) { - wait_for_completion(&ecr.completion); - res = ecr.res; - } - skcipher_request_free(req); - if (res) { - printk_ratelimited( - KERN_ERR - "%s: crypto_skcipher_encrypt() returned %d\n", - __func__, res); - return res; - } - return 0; -} - -static struct page *alloc_bounce_page(struct ext4_crypto_ctx *ctx, - gfp_t gfp_flags) -{ - ctx->w.bounce_page = mempool_alloc(ext4_bounce_page_pool, gfp_flags); - if (ctx->w.bounce_page == NULL) - return ERR_PTR(-ENOMEM); - ctx->flags |= EXT4_WRITE_PATH_FL; - return ctx->w.bounce_page; -} - -/** - * ext4_encrypt() - Encrypts a page - * @inode: The inode for which the encryption should take place - * @plaintext_page: The page to encrypt. Must be locked. - * - * Allocates a ciphertext page and encrypts plaintext_page into it using the ctx - * encryption context. - * - * Called on the page write path. The caller must call - * ext4_restore_control_page() on the returned ciphertext page to - * release the bounce buffer and the encryption context. - * - * Return: An allocated page with the encrypted content on success. Else, an - * error value or NULL. - */ -struct page *ext4_encrypt(struct inode *inode, - struct page *plaintext_page, - gfp_t gfp_flags) -{ - struct ext4_crypto_ctx *ctx; - struct page *ciphertext_page = NULL; - int err; - - BUG_ON(!PageLocked(plaintext_page)); - - ctx = ext4_get_crypto_ctx(inode, gfp_flags); - if (IS_ERR(ctx)) - return (struct page *) ctx; - - /* The encryption operation will require a bounce page. */ - ciphertext_page = alloc_bounce_page(ctx, gfp_flags); - if (IS_ERR(ciphertext_page)) - goto errout; - ctx->w.control_page = plaintext_page; - err = ext4_page_crypto(inode, EXT4_ENCRYPT, plaintext_page->index, - plaintext_page, ciphertext_page, gfp_flags); - if (err) { - ciphertext_page = ERR_PTR(err); - errout: - ext4_release_crypto_ctx(ctx); - return ciphertext_page; - } - SetPagePrivate(ciphertext_page); - set_page_private(ciphertext_page, (unsigned long)ctx); - lock_page(ciphertext_page); - return ciphertext_page; -} - -/** - * ext4_decrypt() - Decrypts a page in-place - * @ctx: The encryption context. - * @page: The page to decrypt. Must be locked. - * - * Decrypts page in-place using the ctx encryption context. - * - * Called from the read completion callback. - * - * Return: Zero on success, non-zero otherwise. - */ -int ext4_decrypt(struct page *page) -{ - BUG_ON(!PageLocked(page)); - - return ext4_page_crypto(page->mapping->host, EXT4_DECRYPT, - page->index, page, page, GFP_NOFS); -} - -int ext4_encrypted_zeroout(struct inode *inode, ext4_lblk_t lblk, - ext4_fsblk_t pblk, ext4_lblk_t len) -{ - struct ext4_crypto_ctx *ctx; - struct page *ciphertext_page = NULL; - struct bio *bio; - int ret, err = 0; - -#if 0 - ext4_msg(inode->i_sb, KERN_CRIT, - "ext4_encrypted_zeroout ino %lu lblk %u len %u", - (unsigned long) inode->i_ino, lblk, len); -#endif - - BUG_ON(inode->i_sb->s_blocksize != PAGE_SIZE); - - ctx = ext4_get_crypto_ctx(inode, GFP_NOFS); - if (IS_ERR(ctx)) - return PTR_ERR(ctx); - - ciphertext_page = alloc_bounce_page(ctx, GFP_NOWAIT); - if (IS_ERR(ciphertext_page)) { - err = PTR_ERR(ciphertext_page); - goto errout; - } - - while (len--) { - err = ext4_page_crypto(inode, EXT4_ENCRYPT, lblk, - ZERO_PAGE(0), ciphertext_page, - GFP_NOFS); - if (err) - goto errout; - - bio = bio_alloc(GFP_NOWAIT, 1); - if (!bio) { - err = -ENOMEM; - goto errout; - } - bio->bi_bdev = inode->i_sb->s_bdev; - bio->bi_iter.bi_sector = - pblk << (inode->i_sb->s_blocksize_bits - 9); - bio_set_op_attrs(bio, REQ_OP_WRITE, 0); - ret = bio_add_page(bio, ciphertext_page, - inode->i_sb->s_blocksize, 0); - if (ret != inode->i_sb->s_blocksize) { - /* should never happen! */ - ext4_msg(inode->i_sb, KERN_ERR, - "bio_add_page failed: %d", ret); - WARN_ON(1); - bio_put(bio); - err = -EIO; - goto errout; - } - err = submit_bio_wait(bio); - if ((err == 0) && bio->bi_error) - err = -EIO; - bio_put(bio); - if (err) - goto errout; - lblk++; pblk++; - } - err = 0; -errout: - ext4_release_crypto_ctx(ctx); - return err; -} - -bool ext4_valid_contents_enc_mode(uint32_t mode) -{ - return (mode == EXT4_ENCRYPTION_MODE_AES_256_XTS); -} - -/** - * ext4_validate_encryption_key_size() - Validate the encryption key size - * @mode: The key mode. - * @size: The key size to validate. - * - * Return: The validated key size for @mode. Zero if invalid. - */ -uint32_t ext4_validate_encryption_key_size(uint32_t mode, uint32_t size) -{ - if (size == ext4_encryption_key_size(mode)) - return size; - return 0; -} - -/* - * Validate dentries for encrypted directories to make sure we aren't - * potentially caching stale data after a key has been added or - * removed. - */ -static int ext4_d_revalidate(struct dentry *dentry, unsigned int flags) -{ - struct dentry *dir; - struct ext4_crypt_info *ci; - int dir_has_key, cached_with_key; - - if (flags & LOOKUP_RCU) - return -ECHILD; - - dir = dget_parent(dentry); - if (!ext4_encrypted_inode(d_inode(dir))) { - dput(dir); - return 0; - } - ci = EXT4_I(d_inode(dir))->i_crypt_info; - if (ci && ci->ci_keyring_key && - (ci->ci_keyring_key->flags & ((1 << KEY_FLAG_INVALIDATED) | - (1 << KEY_FLAG_REVOKED) | - (1 << KEY_FLAG_DEAD)))) - ci = NULL; - - /* this should eventually be an flag in d_flags */ - cached_with_key = dentry->d_fsdata != NULL; - dir_has_key = (ci != NULL); - dput(dir); - - /* - * If the dentry was cached without the key, and it is a - * negative dentry, it might be a valid name. We can't check - * if the key has since been made available due to locking - * reasons, so we fail the validation so ext4_lookup() can do - * this check. - * - * We also fail the validation if the dentry was created with - * the key present, but we no longer have the key, or vice versa. - */ - if ((!cached_with_key && d_is_negative(dentry)) || - (!cached_with_key && dir_has_key) || - (cached_with_key && !dir_has_key)) { -#if 0 /* Revalidation debug */ - char buf[80]; - char *cp = simple_dname(dentry, buf, sizeof(buf)); - - if (IS_ERR(cp)) - cp = (char *) "???"; - pr_err("revalidate: %s %p %d %d %d\n", cp, dentry->d_fsdata, - cached_with_key, d_is_negative(dentry), - dir_has_key); -#endif - return 0; - } - return 1; -} - -const struct dentry_operations ext4_encrypted_d_ops = { - .d_revalidate = ext4_d_revalidate, -}; diff --git a/fs/ext4/crypto_fname.c b/fs/ext4/crypto_fname.c deleted file mode 100644 index 1a2f360405db..000000000000 --- a/fs/ext4/crypto_fname.c +++ /dev/null @@ -1,468 +0,0 @@ -/* - * linux/fs/ext4/crypto_fname.c - * - * Copyright (C) 2015, Google, Inc. - * - * This contains functions for filename crypto management in ext4 - * - * Written by Uday Savagaonkar, 2014. - * - * This has not yet undergone a rigorous security audit. - * - */ - -#include <crypto/skcipher.h> -#include <keys/encrypted-type.h> -#include <keys/user-type.h> -#include <linux/gfp.h> -#include <linux/kernel.h> -#include <linux/key.h> -#include <linux/list.h> -#include <linux/mempool.h> -#include <linux/random.h> -#include <linux/scatterlist.h> -#include <linux/spinlock_types.h> - -#include "ext4.h" -#include "ext4_crypto.h" -#include "xattr.h" - -/** - * ext4_dir_crypt_complete() - - */ -static void ext4_dir_crypt_complete(struct crypto_async_request *req, int res) -{ - struct ext4_completion_result *ecr = req->data; - - if (res == -EINPROGRESS) - return; - ecr->res = res; - complete(&ecr->completion); -} - -bool ext4_valid_filenames_enc_mode(uint32_t mode) -{ - return (mode == EXT4_ENCRYPTION_MODE_AES_256_CTS); -} - -static unsigned max_name_len(struct inode *inode) -{ - return S_ISLNK(inode->i_mode) ? inode->i_sb->s_blocksize : - EXT4_NAME_LEN; -} - -/** - * ext4_fname_encrypt() - - * - * This function encrypts the input filename, and returns the length of the - * ciphertext. Errors are returned as negative numbers. We trust the caller to - * allocate sufficient memory to oname string. - */ -static int ext4_fname_encrypt(struct inode *inode, - const struct qstr *iname, - struct ext4_str *oname) -{ - u32 ciphertext_len; - struct skcipher_request *req = NULL; - DECLARE_EXT4_COMPLETION_RESULT(ecr); - struct ext4_crypt_info *ci = EXT4_I(inode)->i_crypt_info; - struct crypto_skcipher *tfm = ci->ci_ctfm; - int res = 0; - char iv[EXT4_CRYPTO_BLOCK_SIZE]; - struct scatterlist src_sg, dst_sg; - int padding = 4 << (ci->ci_flags & EXT4_POLICY_FLAGS_PAD_MASK); - char *workbuf, buf[32], *alloc_buf = NULL; - unsigned lim = max_name_len(inode); - - if (iname->len <= 0 || iname->len > lim) - return -EIO; - - ciphertext_len = (iname->len < EXT4_CRYPTO_BLOCK_SIZE) ? - EXT4_CRYPTO_BLOCK_SIZE : iname->len; - ciphertext_len = ext4_fname_crypto_round_up(ciphertext_len, padding); - ciphertext_len = (ciphertext_len > lim) - ? lim : ciphertext_len; - - if (ciphertext_len <= sizeof(buf)) { - workbuf = buf; - } else { - alloc_buf = kmalloc(ciphertext_len, GFP_NOFS); - if (!alloc_buf) - return -ENOMEM; - workbuf = alloc_buf; - } - - /* Allocate request */ - req = skcipher_request_alloc(tfm, GFP_NOFS); - if (!req) { - printk_ratelimited( - KERN_ERR "%s: crypto_request_alloc() failed\n", __func__); - kfree(alloc_buf); - return -ENOMEM; - } - skcipher_request_set_callback(req, - CRYPTO_TFM_REQ_MAY_BACKLOG | CRYPTO_TFM_REQ_MAY_SLEEP, - ext4_dir_crypt_complete, &ecr); - - /* Copy the input */ - memcpy(workbuf, iname->name, iname->len); - if (iname->len < ciphertext_len) - memset(workbuf + iname->len, 0, ciphertext_len - iname->len); - - /* Initialize IV */ - memset(iv, 0, EXT4_CRYPTO_BLOCK_SIZE); - - /* Create encryption request */ - sg_init_one(&src_sg, workbuf, ciphertext_len); - sg_init_one(&dst_sg, oname->name, ciphertext_len); - skcipher_request_set_crypt(req, &src_sg, &dst_sg, ciphertext_len, iv); - res = crypto_skcipher_encrypt(req); - if (res == -EINPROGRESS || res == -EBUSY) { - wait_for_completion(&ecr.completion); - res = ecr.res; - } - kfree(alloc_buf); - skcipher_request_free(req); - if (res < 0) { - printk_ratelimited( - KERN_ERR "%s: Error (error code %d)\n", __func__, res); - } - oname->len = ciphertext_len; - return res; -} - -/* - * ext4_fname_decrypt() - * This function decrypts the input filename, and returns - * the length of the plaintext. - * Errors are returned as negative numbers. - * We trust the caller to allocate sufficient memory to oname string. - */ -static int ext4_fname_decrypt(struct inode *inode, - const struct ext4_str *iname, - struct ext4_str *oname) -{ - struct ext4_str tmp_in[2], tmp_out[1]; - struct skcipher_request *req = NULL; - DECLARE_EXT4_COMPLETION_RESULT(ecr); - struct scatterlist src_sg, dst_sg; - struct ext4_crypt_info *ci = EXT4_I(inode)->i_crypt_info; - struct crypto_skcipher *tfm = ci->ci_ctfm; - int res = 0; - char iv[EXT4_CRYPTO_BLOCK_SIZE]; - unsigned lim = max_name_len(inode); - - if (iname->len <= 0 || iname->len > lim) - return -EIO; - - tmp_in[0].name = iname->name; - tmp_in[0].len = iname->len; - tmp_out[0].name = oname->name; - - /* Allocate request */ - req = skcipher_request_alloc(tfm, GFP_NOFS); - if (!req) { - printk_ratelimited( - KERN_ERR "%s: crypto_request_alloc() failed\n", __func__); - return -ENOMEM; - } - skcipher_request_set_callback(req, - CRYPTO_TFM_REQ_MAY_BACKLOG | CRYPTO_TFM_REQ_MAY_SLEEP, - ext4_dir_crypt_complete, &ecr); - - /* Initialize IV */ - memset(iv, 0, EXT4_CRYPTO_BLOCK_SIZE); - - /* Create encryption request */ - sg_init_one(&src_sg, iname->name, iname->len); - sg_init_one(&dst_sg, oname->name, oname->len); - skcipher_request_set_crypt(req, &src_sg, &dst_sg, iname->len, iv); - res = crypto_skcipher_decrypt(req); - if (res == -EINPROGRESS || res == -EBUSY) { - wait_for_completion(&ecr.completion); - res = ecr.res; - } - skcipher_request_free(req); - if (res < 0) { - printk_ratelimited( - KERN_ERR "%s: Error in ext4_fname_encrypt (error code %d)\n", - __func__, res); - return res; - } - - oname->len = strnlen(oname->name, iname->len); - return oname->len; -} - -static const char *lookup_table = - "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+,"; - -/** - * ext4_fname_encode_digest() - - * - * Encodes the input digest using characters from the set [a-zA-Z0-9_+]. - * The encoded string is roughly 4/3 times the size of the input string. - */ -static int digest_encode(const char *src, int len, char *dst) -{ - int i = 0, bits = 0, ac = 0; - char *cp = dst; - - while (i < len) { - ac += (((unsigned char) src[i]) << bits); - bits += 8; - do { - *cp++ = lookup_table[ac & 0x3f]; - ac >>= 6; - bits -= 6; - } while (bits >= 6); - i++; - } - if (bits) - *cp++ = lookup_table[ac & 0x3f]; - return cp - dst; -} - -static int digest_decode(const char *src, int len, char *dst) -{ - int i = 0, bits = 0, ac = 0; - const char *p; - char *cp = dst; - - while (i < len) { - p = strchr(lookup_table, src[i]); - if (p == NULL || src[i] == 0) - return -2; - ac += (p - lookup_table) << bits; - bits += 6; - if (bits >= 8) { - *cp++ = ac & 0xff; - ac >>= 8; - bits -= 8; - } - i++; - } - if (ac) - return -1; - return cp - dst; -} - -/** - * ext4_fname_crypto_round_up() - - * - * Return: The next multiple of block size - */ -u32 ext4_fname_crypto_round_up(u32 size, u32 blksize) -{ - return ((size+blksize-1)/blksize)*blksize; -} - -unsigned ext4_fname_encrypted_size(struct inode *inode, u32 ilen) -{ - struct ext4_crypt_info *ci = EXT4_I(inode)->i_crypt_info; - int padding = 32; - - if (ci) - padding = 4 << (ci->ci_flags & EXT4_POLICY_FLAGS_PAD_MASK); - if (ilen < EXT4_CRYPTO_BLOCK_SIZE) - ilen = EXT4_CRYPTO_BLOCK_SIZE; - return ext4_fname_crypto_round_up(ilen, padding); -} - -/* - * ext4_fname_crypto_alloc_buffer() - - * - * Allocates an output buffer that is sufficient for the crypto operation - * specified by the context and the direction. - */ -int ext4_fname_crypto_alloc_buffer(struct inode *inode, - u32 ilen, struct ext4_str *crypto_str) -{ - unsigned int olen = ext4_fname_encrypted_size(inode, ilen); - - crypto_str->len = olen; - if (olen < EXT4_FNAME_CRYPTO_DIGEST_SIZE*2) - olen = EXT4_FNAME_CRYPTO_DIGEST_SIZE*2; - /* Allocated buffer can hold one more character to null-terminate the - * string */ - crypto_str->name = kmalloc(olen+1, GFP_NOFS); - if (!(crypto_str->name)) - return -ENOMEM; - return 0; -} - -/** - * ext4_fname_crypto_free_buffer() - - * - * Frees the buffer allocated for crypto operation. - */ -void ext4_fname_crypto_free_buffer(struct ext4_str *crypto_str) -{ - if (!crypto_str) - return; - kfree(crypto_str->name); - crypto_str->name = NULL; -} - -/** - * ext4_fname_disk_to_usr() - converts a filename from disk space to user space - */ -int _ext4_fname_disk_to_usr(struct inode *inode, - struct dx_hash_info *hinfo, - const struct ext4_str *iname, - struct ext4_str *oname) -{ - char buf[24]; - int ret; - - if (iname->len < 3) { - /*Check for . and .. */ - if (iname->name[0] == '.' && iname->name[iname->len-1] == '.') { - oname->name[0] = '.'; - oname->name[iname->len-1] = '.'; - oname->len = iname->len; - return oname->len; - } - } - if (iname->len < EXT4_CRYPTO_BLOCK_SIZE) { - EXT4_ERROR_INODE(inode, "encrypted inode too small"); - return -EUCLEAN; - } - if (EXT4_I(inode)->i_crypt_info) - return ext4_fname_decrypt(inode, iname, oname); - - if (iname->len <= EXT4_FNAME_CRYPTO_DIGEST_SIZE) { - ret = digest_encode(iname->name, iname->len, oname->name); - oname->len = ret; - return ret; - } - if (hinfo) { - memcpy(buf, &hinfo->hash, 4); - memcpy(buf+4, &hinfo->minor_hash, 4); - } else - memset(buf, 0, 8); - memcpy(buf + 8, iname->name + iname->len - 16, 16); - oname->name[0] = '_'; - ret = digest_encode(buf, 24, oname->name+1); - oname->len = ret + 1; - return ret + 1; -} - -int ext4_fname_disk_to_usr(struct inode *inode, - struct dx_hash_info *hinfo, - const struct ext4_dir_entry_2 *de, - struct ext4_str *oname) -{ - struct ext4_str iname = {.name = (unsigned char *) de->name, - .len = de->name_len }; - - return _ext4_fname_disk_to_usr(inode, hinfo, &iname, oname); -} - - -/** - * ext4_fname_usr_to_disk() - converts a filename from user space to disk space - */ -int ext4_fname_usr_to_disk(struct inode *inode, - const struct qstr *iname, - struct ext4_str *oname) -{ - int res; - struct ext4_crypt_info *ci = EXT4_I(inode)->i_crypt_info; - - if (iname->len < 3) { - /*Check for . and .. */ - if (iname->name[0] == '.' && - iname->name[iname->len-1] == '.') { - oname->name[0] = '.'; - oname->name[iname->len-1] = '.'; - oname->len = iname->len; - return oname->len; - } - } - if (ci) { - res = ext4_fname_encrypt(inode, iname, oname); - return res; - } - /* Without a proper key, a user is not allowed to modify the filenames - * in a directory. Consequently, a user space name cannot be mapped to - * a disk-space name */ - return -EACCES; -} - -int ext4_fname_setup_filename(struct inode *dir, const struct qstr *iname, - int lookup, struct ext4_filename *fname) -{ - struct ext4_crypt_info *ci; - int ret = 0, bigname = 0; - - memset(fname, 0, sizeof(struct ext4_filename)); - fname->usr_fname = iname; - - if (!ext4_encrypted_inode(dir) || - ((iname->name[0] == '.') && - ((iname->len == 1) || - ((iname->name[1] == '.') && (iname->len == 2))))) { - fname->disk_name.name = (unsigned char *) iname->name; - fname->disk_name.len = iname->len; - return 0; - } - ret = ext4_get_encryption_info(dir); - if (ret) - return ret; - ci = EXT4_I(dir)->i_crypt_info; - if (ci) { - ret = ext4_fname_crypto_alloc_buffer(dir, iname->len, - &fname->crypto_buf); - if (ret < 0) - return ret; - ret = ext4_fname_encrypt(dir, iname, &fname->crypto_buf); - if (ret < 0) - goto errout; - fname->disk_name.name = fname->crypto_buf.name; - fname->disk_name.len = fname->crypto_buf.len; - return 0; - } - if (!lookup) - return -EACCES; - - /* We don't have the key and we are doing a lookup; decode the - * user-supplied name - */ - if (iname->name[0] == '_') - bigname = 1; - if ((bigname && (iname->len != 33)) || - (!bigname && (iname->len > 43))) - return -ENOENT; - - fname->crypto_buf.name = kmalloc(32, GFP_KERNEL); - if (fname->crypto_buf.name == NULL) - return -ENOMEM; - ret = digest_decode(iname->name + bigname, iname->len - bigname, - fname->crypto_buf.name); - if (ret < 0) { - ret = -ENOENT; - goto errout; - } - fname->crypto_buf.len = ret; - if (bigname) { - memcpy(&fname->hinfo.hash, fname->crypto_buf.name, 4); - memcpy(&fname->hinfo.minor_hash, fname->crypto_buf.name + 4, 4); - } else { - fname->disk_name.name = fname->crypto_buf.name; - fname->disk_name.len = fname->crypto_buf.len; - } - return 0; -errout: - kfree(fname->crypto_buf.name); - fname->crypto_buf.name = NULL; - return ret; -} - -void ext4_fname_free_filename(struct ext4_filename *fname) -{ - kfree(fname->crypto_buf.name); - fname->crypto_buf.name = NULL; - fname->usr_fname = NULL; - fname->disk_name.name = NULL; -} diff --git a/fs/ext4/crypto_key.c b/fs/ext4/crypto_key.c deleted file mode 100644 index 0129d688d1f7..000000000000 --- a/fs/ext4/crypto_key.c +++ /dev/null @@ -1,274 +0,0 @@ -/* - * linux/fs/ext4/crypto_key.c - * - * Copyright (C) 2015, Google, Inc. - * - * This contains encryption key functions for ext4 - * - * Written by Michael Halcrow, Ildar Muslukhov, and Uday Savagaonkar, 2015. - */ - -#include <crypto/skcipher.h> -#include <keys/encrypted-type.h> -#include <keys/user-type.h> -#include <linux/random.h> -#include <linux/scatterlist.h> -#include <uapi/linux/keyctl.h> - -#include "ext4.h" -#include "xattr.h" - -static void derive_crypt_complete(struct crypto_async_request *req, int rc) -{ - struct ext4_completion_result *ecr = req->data; - - if (rc == -EINPROGRESS) - return; - - ecr->res = rc; - complete(&ecr->completion); -} - -/** - * ext4_derive_key_aes() - Derive a key using AES-128-ECB - * @deriving_key: Encryption key used for derivation. - * @source_key: Source key to which to apply derivation. - * @derived_key: Derived key. - * - * Return: Zero on success; non-zero otherwise. - */ -static int ext4_derive_key_aes(char deriving_key[EXT4_AES_128_ECB_KEY_SIZE], - char source_key[EXT4_AES_256_XTS_KEY_SIZE], - char derived_key[EXT4_AES_256_XTS_KEY_SIZE]) -{ - int res = 0; - struct skcipher_request *req = NULL; - DECLARE_EXT4_COMPLETION_RESULT(ecr); - struct scatterlist src_sg, dst_sg; - struct crypto_skcipher *tfm = crypto_alloc_skcipher("ecb(aes)", 0, 0); - - if (IS_ERR(tfm)) { - res = PTR_ERR(tfm); - tfm = NULL; - goto out; - } - crypto_skcipher_set_flags(tfm, CRYPTO_TFM_REQ_WEAK_KEY); - req = skcipher_request_alloc(tfm, GFP_NOFS); - if (!req) { - res = -ENOMEM; - goto out; - } - skcipher_request_set_callback(req, - CRYPTO_TFM_REQ_MAY_BACKLOG | CRYPTO_TFM_REQ_MAY_SLEEP, - derive_crypt_complete, &ecr); - res = crypto_skcipher_setkey(tfm, deriving_key, - EXT4_AES_128_ECB_KEY_SIZE); - if (res < 0) - goto out; - sg_init_one(&src_sg, source_key, EXT4_AES_256_XTS_KEY_SIZE); - sg_init_one(&dst_sg, derived_key, EXT4_AES_256_XTS_KEY_SIZE); - skcipher_request_set_crypt(req, &src_sg, &dst_sg, - EXT4_AES_256_XTS_KEY_SIZE, NULL); - res = crypto_skcipher_encrypt(req); - if (res == -EINPROGRESS || res == -EBUSY) { - wait_for_completion(&ecr.completion); - res = ecr.res; - } - -out: - skcipher_request_free(req); - crypto_free_skcipher(tfm); - return res; -} - -void ext4_free_crypt_info(struct ext4_crypt_info *ci) -{ - if (!ci) - return; - - if (ci->ci_keyring_key) - key_put(ci->ci_keyring_key); - crypto_free_skcipher(ci->ci_ctfm); - kmem_cache_free(ext4_crypt_info_cachep, ci); -} - -void ext4_free_encryption_info(struct inode *inode, - struct ext4_crypt_info *ci) -{ - struct ext4_inode_info *ei = EXT4_I(inode); - struct ext4_crypt_info *prev; - - if (ci == NULL) - ci = ACCESS_ONCE(ei->i_crypt_info); - if (ci == NULL) - return; - prev = cmpxchg(&ei->i_crypt_info, ci, NULL); - if (prev != ci) - return; - - ext4_free_crypt_info(ci); -} - -int _ext4_get_encryption_info(struct inode *inode) -{ - struct ext4_inode_info *ei = EXT4_I(inode); - struct ext4_crypt_info *crypt_info; - char full_key_descriptor[EXT4_KEY_DESC_PREFIX_SIZE + - (EXT4_KEY_DESCRIPTOR_SIZE * 2) + 1]; - struct key *keyring_key = NULL; - struct ext4_encryption_key *master_key; - struct ext4_encryption_context ctx; - const struct user_key_payload *ukp; - struct ext4_sb_info *sbi = EXT4_SB(inode->i_sb); - struct crypto_skcipher *ctfm; - const char *cipher_str; - char raw_key[EXT4_MAX_KEY_SIZE]; - char mode; - int res; - - if (!ext4_read_workqueue) { - res = ext4_init_crypto(); - if (res) - return res; - } - -retry: - crypt_info = ACCESS_ONCE(ei->i_crypt_info); - if (crypt_info) { - if (!crypt_info->ci_keyring_key || - key_validate(crypt_info->ci_keyring_key) == 0) - return 0; - ext4_free_encryption_info(inode, crypt_info); - goto retry; - } - - res = ext4_xattr_get(inode, EXT4_XATTR_INDEX_ENCRYPTION, - EXT4_XATTR_NAME_ENCRYPTION_CONTEXT, - &ctx, sizeof(ctx)); - if (res < 0) { - if (!DUMMY_ENCRYPTION_ENABLED(sbi)) - return res; - ctx.contents_encryption_mode = EXT4_ENCRYPTION_MODE_AES_256_XTS; - ctx.filenames_encryption_mode = - EXT4_ENCRYPTION_MODE_AES_256_CTS; - ctx.flags = 0; - } else if (res != sizeof(ctx)) - return -EINVAL; - res = 0; - - crypt_info = kmem_cache_alloc(ext4_crypt_info_cachep, GFP_KERNEL); - if (!crypt_info) - return -ENOMEM; - - crypt_info->ci_flags = ctx.flags; - crypt_info->ci_data_mode = ctx.contents_encryption_mode; - crypt_info->ci_filename_mode = ctx.filenames_encryption_mode; - crypt_info->ci_ctfm = NULL; - crypt_info->ci_keyring_key = NULL; - memcpy(crypt_info->ci_master_key, ctx.master_key_descriptor, - sizeof(crypt_info->ci_master_key)); - if (S_ISREG(inode->i_mode)) - mode = crypt_info->ci_data_mode; - else if (S_ISDIR(inode->i_mode) || S_ISLNK(inode->i_mode)) - mode = crypt_info->ci_filename_mode; - else - BUG(); - switch (mode) { - case EXT4_ENCRYPTION_MODE_AES_256_XTS: - cipher_str = "xts(aes)"; - break; - case EXT4_ENCRYPTION_MODE_AES_256_CTS: - cipher_str = "cts(cbc(aes))"; - break; - default: - printk_once(KERN_WARNING - "ext4: unsupported key mode %d (ino %u)\n", - mode, (unsigned) inode->i_ino); - res = -ENOKEY; - goto out; - } - if (DUMMY_ENCRYPTION_ENABLED(sbi)) { - memset(raw_key, 0x42, EXT4_AES_256_XTS_KEY_SIZE); - goto got_key; - } - memcpy(full_key_descriptor, EXT4_KEY_DESC_PREFIX, - EXT4_KEY_DESC_PREFIX_SIZE); - sprintf(full_key_descriptor + EXT4_KEY_DESC_PREFIX_SIZE, - "%*phN", EXT4_KEY_DESCRIPTOR_SIZE, - ctx.master_key_descriptor); - full_key_descriptor[EXT4_KEY_DESC_PREFIX_SIZE + - (2 * EXT4_KEY_DESCRIPTOR_SIZE)] = '\0'; - keyring_key = request_key(&key_type_logon, full_key_descriptor, NULL); - if (IS_ERR(keyring_key)) { - res = PTR_ERR(keyring_key); - keyring_key = NULL; - goto out; - } - crypt_info->ci_keyring_key = keyring_key; - if (keyring_key->type != &key_type_logon) { - printk_once(KERN_WARNING - "ext4: key type must be logon\n"); - res = -ENOKEY; - goto out; - } - down_read(&keyring_key->sem); - ukp = user_key_payload(keyring_key); - if (ukp->datalen != sizeof(struct ext4_encryption_key)) { - res = -EINVAL; - up_read(&keyring_key->sem); - goto out; - } - master_key = (struct ext4_encryption_key *)ukp->data; - BUILD_BUG_ON(EXT4_AES_128_ECB_KEY_SIZE != - EXT4_KEY_DERIVATION_NONCE_SIZE); - if (master_key->size != EXT4_AES_256_XTS_KEY_SIZE) { - printk_once(KERN_WARNING - "ext4: key size incorrect: %d\n", - master_key->size); - res = -ENOKEY; - up_read(&keyring_key->sem); - goto out; - } - res = ext4_derive_key_aes(ctx.nonce, master_key->raw, - raw_key); - up_read(&keyring_key->sem); - if (res) - goto out; -got_key: - ctfm = crypto_alloc_skcipher(cipher_str, 0, 0); - if (!ctfm || IS_ERR(ctfm)) { - res = ctfm ? PTR_ERR(ctfm) : -ENOMEM; - printk(KERN_DEBUG - "%s: error %d (inode %u) allocating crypto tfm\n", - __func__, res, (unsigned) inode->i_ino); - goto out; - } - crypt_info->ci_ctfm = ctfm; - crypto_skcipher_clear_flags(ctfm, ~0); - crypto_tfm_set_flags(crypto_skcipher_tfm(ctfm), - CRYPTO_TFM_REQ_WEAK_KEY); - res = crypto_skcipher_setkey(ctfm, raw_key, - ext4_encryption_key_size(mode)); - if (res) - goto out; - memzero_explicit(raw_key, sizeof(raw_key)); - if (cmpxchg(&ei->i_crypt_info, NULL, crypt_info) != NULL) { - ext4_free_crypt_info(crypt_info); - goto retry; - } - return 0; - -out: - if (res == -ENOKEY) - res = 0; - ext4_free_crypt_info(crypt_info); - memzero_explicit(raw_key, sizeof(raw_key)); - return res; -} - -int ext4_has_encryption_key(struct inode *inode) -{ - struct ext4_inode_info *ei = EXT4_I(inode); - - return (ei->i_crypt_info != NULL); -} diff --git a/fs/ext4/crypto_policy.c b/fs/ext4/crypto_policy.c deleted file mode 100644 index ad050698143f..000000000000 --- a/fs/ext4/crypto_policy.c +++ /dev/null @@ -1,229 +0,0 @@ -/* - * linux/fs/ext4/crypto_policy.c - * - * Copyright (C) 2015, Google, Inc. - * - * This contains encryption policy functions for ext4 - * - * Written by Michael Halcrow, 2015. - */ - -#include <linux/random.h> -#include <linux/string.h> -#include <linux/types.h> - -#include "ext4_jbd2.h" -#include "ext4.h" -#include "xattr.h" - -static int ext4_inode_has_encryption_context(struct inode *inode) -{ - int res = ext4_xattr_get(inode, EXT4_XATTR_INDEX_ENCRYPTION, - EXT4_XATTR_NAME_ENCRYPTION_CONTEXT, NULL, 0); - return (res > 0); -} - -/* - * check whether the policy is consistent with the encryption context - * for the inode - */ -static int ext4_is_encryption_context_consistent_with_policy( - struct inode *inode, const struct ext4_encryption_policy *policy) -{ - struct ext4_encryption_context ctx; - int res = ext4_xattr_get(inode, EXT4_XATTR_INDEX_ENCRYPTION, - EXT4_XATTR_NAME_ENCRYPTION_CONTEXT, &ctx, - sizeof(ctx)); - if (res != sizeof(ctx)) - return 0; - return (memcmp(ctx.master_key_descriptor, policy->master_key_descriptor, - EXT4_KEY_DESCRIPTOR_SIZE) == 0 && - (ctx.flags == - policy->flags) && - (ctx.contents_encryption_mode == - policy->contents_encryption_mode) && - (ctx.filenames_encryption_mode == - policy->filenames_encryption_mode)); -} - -static int ext4_create_encryption_context_from_policy( - struct inode *inode, const struct ext4_encryption_policy *policy) -{ - struct ext4_encryption_context ctx; - handle_t *handle; - int res, res2; - - res = ext4_convert_inline_data(inode); - if (res) - return res; - - ctx.format = EXT4_ENCRYPTION_CONTEXT_FORMAT_V1; - memcpy(ctx.master_key_descriptor, policy->master_key_descriptor, - EXT4_KEY_DESCRIPTOR_SIZE); - if (!ext4_valid_contents_enc_mode(policy->contents_encryption_mode)) { - printk(KERN_WARNING - "%s: Invalid contents encryption mode %d\n", __func__, - policy->contents_encryption_mode); - return -EINVAL; - } - if (!ext4_valid_filenames_enc_mode(policy->filenames_encryption_mode)) { - printk(KERN_WARNING - "%s: Invalid filenames encryption mode %d\n", __func__, - policy->filenames_encryption_mode); - return -EINVAL; - } - if (policy->flags & ~EXT4_POLICY_FLAGS_VALID) - return -EINVAL; - ctx.contents_encryption_mode = policy->contents_encryption_mode; - ctx.filenames_encryption_mode = policy->filenames_encryption_mode; - ctx.flags = policy->flags; - BUILD_BUG_ON(sizeof(ctx.nonce) != EXT4_KEY_DERIVATION_NONCE_SIZE); - get_random_bytes(ctx.nonce, EXT4_KEY_DERIVATION_NONCE_SIZE); - - handle = ext4_journal_start(inode, EXT4_HT_MISC, - ext4_jbd2_credits_xattr(inode)); - if (IS_ERR(handle)) - return PTR_ERR(handle); - res = ext4_xattr_set(inode, EXT4_XATTR_INDEX_ENCRYPTION, - EXT4_XATTR_NAME_ENCRYPTION_CONTEXT, &ctx, - sizeof(ctx), 0); - if (!res) { - ext4_set_inode_flag(inode, EXT4_INODE_ENCRYPT); - res = ext4_mark_inode_dirty(handle, inode); - if (res) - EXT4_ERROR_INODE(inode, "Failed to mark inode dirty"); - } - res2 = ext4_journal_stop(handle); - if (!res) - res = res2; - return res; -} - -int ext4_process_policy(const struct ext4_encryption_policy *policy, - struct inode *inode) -{ - if (policy->version != 0) - return -EINVAL; - - if (!ext4_inode_has_encryption_context(inode)) { - if (!S_ISDIR(inode->i_mode)) - return -EINVAL; - if (!ext4_empty_dir(inode)) - return -ENOTEMPTY; - return ext4_create_encryption_context_from_policy(inode, - policy); - } - - if (ext4_is_encryption_context_consistent_with_policy(inode, policy)) - return 0; - - printk(KERN_WARNING "%s: Policy inconsistent with encryption context\n", - __func__); - return -EINVAL; -} - -int ext4_get_policy(struct inode *inode, struct ext4_encryption_policy *policy) -{ - struct ext4_encryption_context ctx; - - int res = ext4_xattr_get(inode, EXT4_XATTR_INDEX_ENCRYPTION, - EXT4_XATTR_NAME_ENCRYPTION_CONTEXT, - &ctx, sizeof(ctx)); - if (res != sizeof(ctx)) - return -ENOENT; - if (ctx.format != EXT4_ENCRYPTION_CONTEXT_FORMAT_V1) - return -EINVAL; - policy->version = 0; - policy->contents_encryption_mode = ctx.contents_encryption_mode; - policy->filenames_encryption_mode = ctx.filenames_encryption_mode; - policy->flags = ctx.flags; - memcpy(&policy->master_key_descriptor, ctx.master_key_descriptor, - EXT4_KEY_DESCRIPTOR_SIZE); - return 0; -} - -int ext4_is_child_context_consistent_with_parent(struct inode *parent, - struct inode *child) -{ - struct ext4_crypt_info *parent_ci, *child_ci; - int res; - - if ((parent == NULL) || (child == NULL)) { - pr_err("parent %p child %p\n", parent, child); - WARN_ON(1); /* Should never happen */ - return 0; - } - /* no restrictions if the parent directory is not encrypted */ - if (!ext4_encrypted_inode(parent)) - return 1; - /* if the child directory is not encrypted, this is always a problem */ - if (!ext4_encrypted_inode(child)) - return 0; - res = ext4_get_encryption_info(parent); - if (res) - return 0; - res = ext4_get_encryption_info(child); - if (res) - return 0; - parent_ci = EXT4_I(parent)->i_crypt_info; - child_ci = EXT4_I(child)->i_crypt_info; - if (!parent_ci && !child_ci) - return 1; - if (!parent_ci || !child_ci) - return 0; - - return (memcmp(parent_ci->ci_master_key, - child_ci->ci_master_key, - EXT4_KEY_DESCRIPTOR_SIZE) == 0 && - (parent_ci->ci_data_mode == child_ci->ci_data_mode) && - (parent_ci->ci_filename_mode == child_ci->ci_filename_mode) && - (parent_ci->ci_flags == child_ci->ci_flags)); -} - -/** - * ext4_inherit_context() - Sets a child context from its parent - * @parent: Parent inode from which the context is inherited. - * @child: Child inode that inherits the context from @parent. - * - * Return: Zero on success, non-zero otherwise - */ -int ext4_inherit_context(struct inode *parent, struct inode *child) -{ - struct ext4_encryption_context ctx; - struct ext4_crypt_info *ci; - int res; - - res = ext4_get_encryption_info(parent); - if (res < 0) - return res; - ci = EXT4_I(parent)->i_crypt_info; - if (ci == NULL) - return -ENOKEY; - - ctx.format = EXT4_ENCRYPTION_CONTEXT_FORMAT_V1; - if (DUMMY_ENCRYPTION_ENABLED(EXT4_SB(parent->i_sb))) { - ctx.contents_encryption_mode = EXT4_ENCRYPTION_MODE_AES_256_XTS; - ctx.filenames_encryption_mode = - EXT4_ENCRYPTION_MODE_AES_256_CTS; - ctx.flags = 0; - memset(ctx.master_key_descriptor, 0x42, - EXT4_KEY_DESCRIPTOR_SIZE); - res = 0; - } else { - ctx.contents_encryption_mode = ci->ci_data_mode; - ctx.filenames_encryption_mode = ci->ci_filename_mode; - ctx.flags = ci->ci_flags; - memcpy(ctx.master_key_descriptor, ci->ci_master_key, - EXT4_KEY_DESCRIPTOR_SIZE); - } - get_random_bytes(ctx.nonce, EXT4_KEY_DERIVATION_NONCE_SIZE); - res = ext4_xattr_set(child, EXT4_XATTR_INDEX_ENCRYPTION, - EXT4_XATTR_NAME_ENCRYPTION_CONTEXT, &ctx, - sizeof(ctx), 0); - if (!res) { - ext4_set_inode_flag(child, EXT4_INODE_ENCRYPT); - ext4_clear_inode_state(child, EXT4_STATE_MAY_INLINE_DATA); - res = ext4_get_encryption_info(child); - } - return res; -} diff --git a/fs/ext4/dir.c b/fs/ext4/dir.c index 68323e3da3fa..67415e0e6af0 100644 --- a/fs/ext4/dir.c +++ b/fs/ext4/dir.c @@ -109,10 +109,10 @@ static int ext4_readdir(struct file *file, struct dir_context *ctx) struct super_block *sb = inode->i_sb; struct buffer_head *bh = NULL; int dir_has_error = 0; - struct ext4_str fname_crypto_str = {.name = NULL, .len = 0}; + struct fscrypt_str fstr = FSTR_INIT(NULL, 0); if (ext4_encrypted_inode(inode)) { - err = ext4_get_encryption_info(inode); + err = fscrypt_get_encryption_info(inode); if (err && err != -ENOKEY) return err; } @@ -139,8 +139,7 @@ static int ext4_readdir(struct file *file, struct dir_context *ctx) } if (ext4_encrypted_inode(inode)) { - err = ext4_fname_crypto_alloc_buffer(inode, EXT4_NAME_LEN, - &fname_crypto_str); + err = fscrypt_fname_alloc_buffer(inode, EXT4_NAME_LEN, &fstr); if (err < 0) return err; } @@ -253,16 +252,19 @@ static int ext4_readdir(struct file *file, struct dir_context *ctx) get_dtype(sb, de->file_type))) goto done; } else { - int save_len = fname_crypto_str.len; + int save_len = fstr.len; + struct fscrypt_str de_name = + FSTR_INIT(de->name, + de->name_len); /* Directory is encrypted */ - err = ext4_fname_disk_to_usr(inode, - NULL, de, &fname_crypto_str); - fname_crypto_str.len = save_len; + err = fscrypt_fname_disk_to_usr(inode, + 0, 0, &de_name, &fstr); + fstr.len = save_len; if (err < 0) goto errout; if (!dir_emit(ctx, - fname_crypto_str.name, err, + fstr.name, err, le32_to_cpu(de->inode), get_dtype(sb, de->file_type))) goto done; @@ -281,7 +283,7 @@ done: err = 0; errout: #ifdef CONFIG_EXT4_FS_ENCRYPTION - ext4_fname_crypto_free_buffer(&fname_crypto_str); + fscrypt_fname_free_buffer(&fstr); #endif brelse(bh); return err; @@ -432,7 +434,7 @@ void ext4_htree_free_dir_info(struct dir_private_info *p) int ext4_htree_store_dirent(struct file *dir_file, __u32 hash, __u32 minor_hash, struct ext4_dir_entry_2 *dirent, - struct ext4_str *ent_name) + struct fscrypt_str *ent_name) { struct rb_node **p, *parent = NULL; struct fname *fname, *new_fn; @@ -609,7 +611,7 @@ finished: static int ext4_dir_open(struct inode * inode, struct file * filp) { if (ext4_encrypted_inode(inode)) - return ext4_get_encryption_info(inode) ? -EACCES : 0; + return fscrypt_get_encryption_info(inode) ? -EACCES : 0; return 0; } diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h index b84aa1ca480a..ea31931386ec 100644 --- a/fs/ext4/ext4.h +++ b/fs/ext4/ext4.h @@ -32,6 +32,7 @@ #include <linux/percpu_counter.h> #include <linux/ratelimit.h> #include <crypto/hash.h> +#include <linux/fscrypto.h> #include <linux/falloc.h> #include <linux/percpu-rwsem.h> #ifdef __KERNEL__ @@ -608,15 +609,6 @@ enum { #define EXT4_FREE_BLOCKS_NOFREE_FIRST_CLUSTER 0x0010 #define EXT4_FREE_BLOCKS_NOFREE_LAST_CLUSTER 0x0020 -/* Encryption algorithms */ -#define EXT4_ENCRYPTION_MODE_INVALID 0 -#define EXT4_ENCRYPTION_MODE_AES_256_XTS 1 -#define EXT4_ENCRYPTION_MODE_AES_256_GCM 2 -#define EXT4_ENCRYPTION_MODE_AES_256_CBC 3 -#define EXT4_ENCRYPTION_MODE_AES_256_CTS 4 - -#include "ext4_crypto.h" - /* * ioctl commands */ @@ -638,9 +630,9 @@ enum { #define EXT4_IOC_RESIZE_FS _IOW('f', 16, __u64) #define EXT4_IOC_SWAP_BOOT _IO('f', 17) #define EXT4_IOC_PRECACHE_EXTENTS _IO('f', 18) -#define EXT4_IOC_SET_ENCRYPTION_POLICY _IOR('f', 19, struct ext4_encryption_policy) -#define EXT4_IOC_GET_ENCRYPTION_PWSALT _IOW('f', 20, __u8[16]) -#define EXT4_IOC_GET_ENCRYPTION_POLICY _IOW('f', 21, struct ext4_encryption_policy) +#define EXT4_IOC_SET_ENCRYPTION_POLICY FS_IOC_SET_ENCRYPTION_POLICY +#define EXT4_IOC_GET_ENCRYPTION_PWSALT FS_IOC_GET_ENCRYPTION_PWSALT +#define EXT4_IOC_GET_ENCRYPTION_POLICY FS_IOC_GET_ENCRYPTION_POLICY #ifndef FS_IOC_FSGETXATTR /* Until the uapi changes get merged for project quota... */ @@ -1082,10 +1074,6 @@ struct ext4_inode_info { /* Precomputed uuid+inum+igen checksum for seeding inode checksums */ __u32 i_csum_seed; -#ifdef CONFIG_EXT4_FS_ENCRYPTION - /* Encryption params */ - struct ext4_crypt_info *i_crypt_info; -#endif kprojid_t i_projid; }; @@ -1344,6 +1332,11 @@ struct ext4_super_block { /* Number of quota types we support */ #define EXT4_MAXQUOTAS 3 +#ifdef CONFIG_EXT4_FS_ENCRYPTION +#define EXT4_KEY_DESC_PREFIX "ext4:" +#define EXT4_KEY_DESC_PREFIX_SIZE 5 +#endif + /* * fourth extended-fs super-block data in memory */ @@ -1430,6 +1423,7 @@ struct ext4_sb_info { unsigned short *s_mb_offsets; unsigned int *s_mb_maxs; unsigned int s_group_info_size; + unsigned int s_mb_free_pending; /* tunables */ unsigned long s_stripe; @@ -1512,6 +1506,12 @@ struct ext4_sb_info { /* Barrier between changing inodes' journal flags and writepages ops. */ struct percpu_rw_semaphore s_journal_flag_rwsem; + + /* Encryption support */ +#ifdef CONFIG_EXT4_FS_ENCRYPTION + u8 key_prefix[EXT4_KEY_DESC_PREFIX_SIZE]; + u8 key_prefix_size; +#endif }; static inline struct ext4_sb_info *EXT4_SB(struct super_block *sb) @@ -1610,15 +1610,6 @@ static inline void ext4_clear_state_flags(struct ext4_inode_info *ei) /* * Returns true if the inode is inode is encrypted */ -static inline int ext4_encrypted_inode(struct inode *inode) -{ -#ifdef CONFIG_EXT4_FS_ENCRYPTION - return ext4_test_inode_flag(inode, EXT4_INODE_ENCRYPT); -#else - return 0; -#endif -} - #define NEXT_ORPHAN(inode) EXT4_I(inode)->i_dtime /* @@ -2082,10 +2073,10 @@ struct dx_hash_info struct ext4_filename { const struct qstr *usr_fname; - struct ext4_str disk_name; + struct fscrypt_str disk_name; struct dx_hash_info hinfo; #ifdef CONFIG_EXT4_FS_ENCRYPTION - struct ext4_str crypto_buf; + struct fscrypt_str crypto_buf; #endif }; @@ -2296,132 +2287,82 @@ extern unsigned ext4_free_clusters_after_init(struct super_block *sb, struct ext4_group_desc *gdp); ext4_fsblk_t ext4_inode_to_goal_block(struct inode *); -/* crypto_policy.c */ -int ext4_is_child_context_consistent_with_parent(struct inode *parent, - struct inode *child); -int ext4_inherit_context(struct inode *parent, struct inode *child); -void ext4_to_hex(char *dst, char *src, size_t src_size); -int ext4_process_policy(const struct ext4_encryption_policy *policy, - struct inode *inode); -int ext4_get_policy(struct inode *inode, - struct ext4_encryption_policy *policy); - -/* crypto.c */ -extern struct kmem_cache *ext4_crypt_info_cachep; -bool ext4_valid_contents_enc_mode(uint32_t mode); -uint32_t ext4_validate_encryption_key_size(uint32_t mode, uint32_t size); -extern struct workqueue_struct *ext4_read_workqueue; -struct ext4_crypto_ctx *ext4_get_crypto_ctx(struct inode *inode, - gfp_t gfp_flags); -void ext4_release_crypto_ctx(struct ext4_crypto_ctx *ctx); -void ext4_restore_control_page(struct page *data_page); -struct page *ext4_encrypt(struct inode *inode, - struct page *plaintext_page, - gfp_t gfp_flags); -int ext4_decrypt(struct page *page); -int ext4_encrypted_zeroout(struct inode *inode, ext4_lblk_t lblk, - ext4_fsblk_t pblk, ext4_lblk_t len); -extern const struct dentry_operations ext4_encrypted_d_ops; - -#ifdef CONFIG_EXT4_FS_ENCRYPTION -int ext4_init_crypto(void); -void ext4_exit_crypto(void); static inline int ext4_sb_has_crypto(struct super_block *sb) { return ext4_has_feature_encrypt(sb); } -#else -static inline int ext4_init_crypto(void) { return 0; } -static inline void ext4_exit_crypto(void) { } -static inline int ext4_sb_has_crypto(struct super_block *sb) + +static inline bool ext4_encrypted_inode(struct inode *inode) { - return 0; + return ext4_test_inode_flag(inode, EXT4_INODE_ENCRYPT); } -#endif -/* crypto_fname.c */ -bool ext4_valid_filenames_enc_mode(uint32_t mode); -u32 ext4_fname_crypto_round_up(u32 size, u32 blksize); -unsigned ext4_fname_encrypted_size(struct inode *inode, u32 ilen); -int ext4_fname_crypto_alloc_buffer(struct inode *inode, - u32 ilen, struct ext4_str *crypto_str); -int _ext4_fname_disk_to_usr(struct inode *inode, - struct dx_hash_info *hinfo, - const struct ext4_str *iname, - struct ext4_str *oname); -int ext4_fname_disk_to_usr(struct inode *inode, - struct dx_hash_info *hinfo, - const struct ext4_dir_entry_2 *de, - struct ext4_str *oname); -int ext4_fname_usr_to_disk(struct inode *inode, - const struct qstr *iname, - struct ext4_str *oname); #ifdef CONFIG_EXT4_FS_ENCRYPTION -void ext4_fname_crypto_free_buffer(struct ext4_str *crypto_str); -int ext4_fname_setup_filename(struct inode *dir, const struct qstr *iname, - int lookup, struct ext4_filename *fname); -void ext4_fname_free_filename(struct ext4_filename *fname); -#else -static inline -int ext4_setup_fname_crypto(struct inode *inode) -{ - return 0; -} -static inline void ext4_fname_crypto_free_buffer(struct ext4_str *p) { } static inline int ext4_fname_setup_filename(struct inode *dir, - const struct qstr *iname, - int lookup, struct ext4_filename *fname) + const struct qstr *iname, + int lookup, struct ext4_filename *fname) { - fname->usr_fname = iname; - fname->disk_name.name = (unsigned char *) iname->name; - fname->disk_name.len = iname->len; - return 0; -} -static inline void ext4_fname_free_filename(struct ext4_filename *fname) { } -#endif - + struct fscrypt_name name; + int err; -/* crypto_key.c */ -void ext4_free_crypt_info(struct ext4_crypt_info *ci); -void ext4_free_encryption_info(struct inode *inode, struct ext4_crypt_info *ci); -int _ext4_get_encryption_info(struct inode *inode); + memset(fname, 0, sizeof(struct ext4_filename)); -#ifdef CONFIG_EXT4_FS_ENCRYPTION -int ext4_has_encryption_key(struct inode *inode); + err = fscrypt_setup_filename(dir, iname, lookup, &name); -static inline int ext4_get_encryption_info(struct inode *inode) -{ - struct ext4_crypt_info *ci = EXT4_I(inode)->i_crypt_info; - - if (!ci || - (ci->ci_keyring_key && - (ci->ci_keyring_key->flags & ((1 << KEY_FLAG_INVALIDATED) | - (1 << KEY_FLAG_REVOKED) | - (1 << KEY_FLAG_DEAD))))) - return _ext4_get_encryption_info(inode); - return 0; + fname->usr_fname = name.usr_fname; + fname->disk_name = name.disk_name; + fname->hinfo.hash = name.hash; + fname->hinfo.minor_hash = name.minor_hash; + fname->crypto_buf = name.crypto_buf; + return err; } -static inline struct ext4_crypt_info *ext4_encryption_info(struct inode *inode) +static inline void ext4_fname_free_filename(struct ext4_filename *fname) { - return EXT4_I(inode)->i_crypt_info; -} + struct fscrypt_name name; -#else -static inline int ext4_has_encryption_key(struct inode *inode) -{ - return 0; + name.crypto_buf = fname->crypto_buf; + fscrypt_free_filename(&name); + + fname->crypto_buf.name = NULL; + fname->usr_fname = NULL; + fname->disk_name.name = NULL; } -static inline int ext4_get_encryption_info(struct inode *inode) +#else +static inline int ext4_fname_setup_filename(struct inode *dir, + const struct qstr *iname, + int lookup, struct ext4_filename *fname) { + fname->usr_fname = iname; + fname->disk_name.name = (unsigned char *) iname->name; + fname->disk_name.len = iname->len; return 0; } -static inline struct ext4_crypt_info *ext4_encryption_info(struct inode *inode) -{ - return NULL; -} -#endif +static inline void ext4_fname_free_filename(struct ext4_filename *fname) { } +#define fscrypt_set_d_op(i) +#define fscrypt_get_ctx fscrypt_notsupp_get_ctx +#define fscrypt_release_ctx fscrypt_notsupp_release_ctx +#define fscrypt_encrypt_page fscrypt_notsupp_encrypt_page +#define fscrypt_decrypt_page fscrypt_notsupp_decrypt_page +#define fscrypt_decrypt_bio_pages fscrypt_notsupp_decrypt_bio_pages +#define fscrypt_pullback_bio_page fscrypt_notsupp_pullback_bio_page +#define fscrypt_restore_control_page fscrypt_notsupp_restore_control_page +#define fscrypt_zeroout_range fscrypt_notsupp_zeroout_range +#define fscrypt_process_policy fscrypt_notsupp_process_policy +#define fscrypt_get_policy fscrypt_notsupp_get_policy +#define fscrypt_has_permitted_context fscrypt_notsupp_has_permitted_context +#define fscrypt_inherit_context fscrypt_notsupp_inherit_context +#define fscrypt_get_encryption_info fscrypt_notsupp_get_encryption_info +#define fscrypt_put_encryption_info fscrypt_notsupp_put_encryption_info +#define fscrypt_setup_filename fscrypt_notsupp_setup_filename +#define fscrypt_free_filename fscrypt_notsupp_free_filename +#define fscrypt_fname_encrypted_size fscrypt_notsupp_fname_encrypted_size +#define fscrypt_fname_alloc_buffer fscrypt_notsupp_fname_alloc_buffer +#define fscrypt_fname_free_buffer fscrypt_notsupp_fname_free_buffer +#define fscrypt_fname_disk_to_usr fscrypt_notsupp_fname_disk_to_usr +#define fscrypt_fname_usr_to_disk fscrypt_notsupp_fname_usr_to_disk +#endif /* dir.c */ extern int __ext4_check_dir_entry(const char *, unsigned int, struct inode *, @@ -2435,7 +2376,7 @@ extern int __ext4_check_dir_entry(const char *, unsigned int, struct inode *, extern int ext4_htree_store_dirent(struct file *dir_file, __u32 hash, __u32 minor_hash, struct ext4_dir_entry_2 *dirent, - struct ext4_str *ent_name); + struct fscrypt_str *ent_name); extern void ext4_htree_free_dir_info(struct dir_private_info *p); extern int ext4_find_dest_de(struct inode *dir, struct inode *inode, struct buffer_head *bh, @@ -2623,7 +2564,7 @@ extern int ext4_generic_delete_entry(handle_t *handle, void *entry_buf, int buf_size, int csum_size); -extern int ext4_empty_dir(struct inode *inode); +extern bool ext4_empty_dir(struct inode *inode); /* resize.c */ extern int ext4_group_add(struct super_block *sb, @@ -3105,7 +3046,7 @@ extern int ext4_delete_inline_entry(handle_t *handle, struct ext4_dir_entry_2 *de_del, struct buffer_head *bh, int *has_inline_data); -extern int empty_inline_dir(struct inode *dir, int *has_inline_data); +extern bool empty_inline_dir(struct inode *dir, int *has_inline_data); extern struct buffer_head *ext4_get_first_inline_block(struct inode *inode, struct ext4_dir_entry_2 **parent_de, int *retval); diff --git a/fs/ext4/ext4_crypto.h b/fs/ext4/ext4_crypto.h deleted file mode 100644 index 1f73c29717e1..000000000000 --- a/fs/ext4/ext4_crypto.h +++ /dev/null @@ -1,159 +0,0 @@ -/* - * linux/fs/ext4/ext4_crypto.h - * - * Copyright (C) 2015, Google, Inc. - * - * This contains encryption header content for ext4 - * - * Written by Michael Halcrow, 2015. - */ - -#ifndef _EXT4_CRYPTO_H -#define _EXT4_CRYPTO_H - -#include <linux/fs.h> - -#define EXT4_KEY_DESCRIPTOR_SIZE 8 - -/* Policy provided via an ioctl on the topmost directory */ -struct ext4_encryption_policy { - char version; - char contents_encryption_mode; - char filenames_encryption_mode; - char flags; - char master_key_descriptor[EXT4_KEY_DESCRIPTOR_SIZE]; -} __attribute__((__packed__)); - -#define EXT4_ENCRYPTION_CONTEXT_FORMAT_V1 1 -#define EXT4_KEY_DERIVATION_NONCE_SIZE 16 - -#define EXT4_POLICY_FLAGS_PAD_4 0x00 -#define EXT4_POLICY_FLAGS_PAD_8 0x01 -#define EXT4_POLICY_FLAGS_PAD_16 0x02 -#define EXT4_POLICY_FLAGS_PAD_32 0x03 -#define EXT4_POLICY_FLAGS_PAD_MASK 0x03 -#define EXT4_POLICY_FLAGS_VALID 0x03 - -/** - * Encryption context for inode - * - * Protector format: - * 1 byte: Protector format (1 = this version) - * 1 byte: File contents encryption mode - * 1 byte: File names encryption mode - * 1 byte: Reserved - * 8 bytes: Master Key descriptor - * 16 bytes: Encryption Key derivation nonce - */ -struct ext4_encryption_context { - char format; - char contents_encryption_mode; - char filenames_encryption_mode; - char flags; - char master_key_descriptor[EXT4_KEY_DESCRIPTOR_SIZE]; - char nonce[EXT4_KEY_DERIVATION_NONCE_SIZE]; -} __attribute__((__packed__)); - -/* Encryption parameters */ -#define EXT4_XTS_TWEAK_SIZE 16 -#define EXT4_AES_128_ECB_KEY_SIZE 16 -#define EXT4_AES_256_GCM_KEY_SIZE 32 -#define EXT4_AES_256_CBC_KEY_SIZE 32 -#define EXT4_AES_256_CTS_KEY_SIZE 32 -#define EXT4_AES_256_XTS_KEY_SIZE 64 -#define EXT4_MAX_KEY_SIZE 64 - -#define EXT4_KEY_DESC_PREFIX "ext4:" -#define EXT4_KEY_DESC_PREFIX_SIZE 5 - -/* This is passed in from userspace into the kernel keyring */ -struct ext4_encryption_key { - __u32 mode; - char raw[EXT4_MAX_KEY_SIZE]; - __u32 size; -} __attribute__((__packed__)); - -struct ext4_crypt_info { - char ci_data_mode; - char ci_filename_mode; - char ci_flags; - struct crypto_skcipher *ci_ctfm; - struct key *ci_keyring_key; - char ci_master_key[EXT4_KEY_DESCRIPTOR_SIZE]; -}; - -#define EXT4_CTX_REQUIRES_FREE_ENCRYPT_FL 0x00000001 -#define EXT4_WRITE_PATH_FL 0x00000002 - -struct ext4_crypto_ctx { - union { - struct { - struct page *bounce_page; /* Ciphertext page */ - struct page *control_page; /* Original page */ - } w; - struct { - struct bio *bio; - struct work_struct work; - } r; - struct list_head free_list; /* Free list */ - }; - char flags; /* Flags */ - char mode; /* Encryption mode for tfm */ -}; - -struct ext4_completion_result { - struct completion completion; - int res; -}; - -#define DECLARE_EXT4_COMPLETION_RESULT(ecr) \ - struct ext4_completion_result ecr = { \ - COMPLETION_INITIALIZER((ecr).completion), 0 } - -static inline int ext4_encryption_key_size(int mode) -{ - switch (mode) { - case EXT4_ENCRYPTION_MODE_AES_256_XTS: - return EXT4_AES_256_XTS_KEY_SIZE; - case EXT4_ENCRYPTION_MODE_AES_256_GCM: - return EXT4_AES_256_GCM_KEY_SIZE; - case EXT4_ENCRYPTION_MODE_AES_256_CBC: - return EXT4_AES_256_CBC_KEY_SIZE; - case EXT4_ENCRYPTION_MODE_AES_256_CTS: - return EXT4_AES_256_CTS_KEY_SIZE; - default: - BUG(); - } - return 0; -} - -#define EXT4_FNAME_NUM_SCATTER_ENTRIES 4 -#define EXT4_CRYPTO_BLOCK_SIZE 16 -#define EXT4_FNAME_CRYPTO_DIGEST_SIZE 32 - -struct ext4_str { - unsigned char *name; - u32 len; -}; - -/** - * For encrypted symlinks, the ciphertext length is stored at the beginning - * of the string in little-endian format. - */ -struct ext4_encrypted_symlink_data { - __le16 len; - char encrypted_path[1]; -} __attribute__((__packed__)); - -/** - * This function is used to calculate the disk space required to - * store a filename of length l in encrypted symlink format. - */ -static inline u32 encrypted_symlink_data_len(u32 l) -{ - if (l < EXT4_CRYPTO_BLOCK_SIZE) - l = EXT4_CRYPTO_BLOCK_SIZE; - return (l + sizeof(struct ext4_encrypted_symlink_data) - 1); -} - -#endif /* _EXT4_CRYPTO_H */ diff --git a/fs/ext4/ext4_jbd2.h b/fs/ext4/ext4_jbd2.h index 09c1ef38cbe6..b1d52c14098e 100644 --- a/fs/ext4/ext4_jbd2.h +++ b/fs/ext4/ext4_jbd2.h @@ -175,6 +175,13 @@ struct ext4_journal_cb_entry { * There is no guaranteed calling order of multiple registered callbacks on * the same transaction. */ +static inline void _ext4_journal_callback_add(handle_t *handle, + struct ext4_journal_cb_entry *jce) +{ + /* Add the jce to transaction's private list */ + list_add_tail(&jce->jce_list, &handle->h_transaction->t_private_list); +} + static inline void ext4_journal_callback_add(handle_t *handle, void (*func)(struct super_block *sb, struct ext4_journal_cb_entry *jce, @@ -187,10 +194,11 @@ static inline void ext4_journal_callback_add(handle_t *handle, /* Add the jce to transaction's private list */ jce->jce_func = func; spin_lock(&sbi->s_md_lock); - list_add_tail(&jce->jce_list, &handle->h_transaction->t_private_list); + _ext4_journal_callback_add(handle, jce); spin_unlock(&sbi->s_md_lock); } + /** * ext4_journal_callback_del: delete a registered callback * @handle: active journal transaction handle on which callback was registered diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c index 2a2eef9c14e4..d7ccb7f51dfc 100644 --- a/fs/ext4/extents.c +++ b/fs/ext4/extents.c @@ -381,9 +381,13 @@ static int ext4_valid_extent(struct inode *inode, struct ext4_extent *ext) ext4_fsblk_t block = ext4_ext_pblock(ext); int len = ext4_ext_get_actual_len(ext); ext4_lblk_t lblock = le32_to_cpu(ext->ee_block); - ext4_lblk_t last = lblock + len - 1; - if (len == 0 || lblock > last) + /* + * We allow neither: + * - zero length + * - overflow/wrap-around + */ + if (lblock + len <= lblock) return 0; return ext4_data_block_valid(EXT4_SB(inode->i_sb), block, len); } @@ -474,6 +478,10 @@ static int __ext4_ext_check(const char *function, unsigned int line, error_msg = "invalid extent entries"; goto corrupted; } + if (unlikely(depth > 32)) { + error_msg = "too large eh_depth"; + goto corrupted; + } /* Verify checksum on non-root extent tree nodes */ if (ext_depth(inode) != depth && !ext4_extent_block_csum_verify(inode, eh)) { diff --git a/fs/ext4/file.c b/fs/ext4/file.c index df44c877892a..261ac3734c58 100644 --- a/fs/ext4/file.c +++ b/fs/ext4/file.c @@ -202,7 +202,7 @@ static int ext4_dax_fault(struct vm_area_struct *vma, struct vm_fault *vmf) if (IS_ERR(handle)) result = VM_FAULT_SIGBUS; else - result = __dax_fault(vma, vmf, ext4_dax_get_block); + result = dax_fault(vma, vmf, ext4_dax_get_block); if (write) { if (!IS_ERR(handle)) @@ -237,7 +237,7 @@ static int ext4_dax_pmd_fault(struct vm_area_struct *vma, unsigned long addr, if (IS_ERR(handle)) result = VM_FAULT_SIGBUS; else - result = __dax_pmd_fault(vma, addr, pmd, flags, + result = dax_pmd_fault(vma, addr, pmd, flags, ext4_dax_get_block); if (write) { @@ -303,10 +303,10 @@ static int ext4_file_mmap(struct file *file, struct vm_area_struct *vma) struct inode *inode = file->f_mapping->host; if (ext4_encrypted_inode(inode)) { - int err = ext4_get_encryption_info(inode); + int err = fscrypt_get_encryption_info(inode); if (err) return 0; - if (ext4_encryption_info(inode) == NULL) + if (!fscrypt_has_encryption_key(inode)) return -ENOKEY; } file_accessed(file); @@ -362,16 +362,16 @@ static int ext4_file_open(struct inode * inode, struct file * filp) } } if (ext4_encrypted_inode(inode)) { - ret = ext4_get_encryption_info(inode); + ret = fscrypt_get_encryption_info(inode); if (ret) return -EACCES; - if (ext4_encryption_info(inode) == NULL) + if (!fscrypt_has_encryption_key(inode)) return -ENOKEY; } dir = dget_parent(file_dentry(filp)); if (ext4_encrypted_inode(d_inode(dir)) && - !ext4_is_child_context_consistent_with_parent(d_inode(dir), inode)) { + !fscrypt_has_permitted_context(d_inode(dir), inode)) { ext4_warning(inode->i_sb, "Inconsistent encryption contexts: %lu/%lu", (unsigned long) d_inode(dir)->i_ino, diff --git a/fs/ext4/fsync.c b/fs/ext4/fsync.c index 8850254136ae..5c4372512ef7 100644 --- a/fs/ext4/fsync.c +++ b/fs/ext4/fsync.c @@ -106,9 +106,11 @@ int ext4_sync_file(struct file *file, loff_t start, loff_t end, int datasync) } if (!journal) { - ret = generic_file_fsync(file, start, end, datasync); + ret = __generic_file_fsync(file, start, end, datasync); if (!ret && !hlist_empty(&inode->i_dentry)) ret = ext4_sync_parent(inode); + if (test_opt(inode->i_sb, BARRIER)) + goto issue_flush; goto out; } @@ -140,6 +142,7 @@ int ext4_sync_file(struct file *file, loff_t start, loff_t end, int datasync) needs_barrier = true; ret = jbd2_complete_transaction(journal, commit_tid); if (needs_barrier) { + issue_flush: err = blkdev_issue_flush(inode->i_sb->s_bdev, GFP_KERNEL, NULL); if (!ret) ret = err; diff --git a/fs/ext4/ialloc.c b/fs/ext4/ialloc.c index 1e4b0b7425e5..9e66cd1d7b78 100644 --- a/fs/ext4/ialloc.c +++ b/fs/ext4/ialloc.c @@ -767,10 +767,10 @@ struct inode *__ext4_new_inode(handle_t *handle, struct inode *dir, if ((ext4_encrypted_inode(dir) || DUMMY_ENCRYPTION_ENABLED(EXT4_SB(dir->i_sb))) && (S_ISREG(mode) || S_ISDIR(mode) || S_ISLNK(mode))) { - err = ext4_get_encryption_info(dir); + err = fscrypt_get_encryption_info(dir); if (err) return ERR_PTR(err); - if (ext4_encryption_info(dir) == NULL) + if (!fscrypt_has_encryption_key(dir)) return ERR_PTR(-EPERM); if (!handle) nblocks += EXT4_DATA_TRANS_BLOCKS(dir->i_sb); @@ -1115,7 +1115,8 @@ got: } if (encrypt) { - err = ext4_inherit_context(dir, inode); + /* give pointer to avoid set_context with journal ops. */ + err = fscrypt_inherit_context(dir, inode, &encrypt, true); if (err) goto fail_free_drop; } diff --git a/fs/ext4/inline.c b/fs/ext4/inline.c index ff7538c26992..f74d5ee2cdec 100644 --- a/fs/ext4/inline.c +++ b/fs/ext4/inline.c @@ -1326,7 +1326,7 @@ int htree_inlinedir_to_tree(struct file *dir_file, struct ext4_iloc iloc; void *dir_buf = NULL; struct ext4_dir_entry_2 fake; - struct ext4_str tmp_str; + struct fscrypt_str tmp_str; ret = ext4_get_inode_loc(inode, &iloc); if (ret) @@ -1739,20 +1739,20 @@ ext4_get_inline_entry(struct inode *inode, return (struct ext4_dir_entry_2 *)(inline_pos + offset); } -int empty_inline_dir(struct inode *dir, int *has_inline_data) +bool empty_inline_dir(struct inode *dir, int *has_inline_data) { int err, inline_size; struct ext4_iloc iloc; void *inline_pos; unsigned int offset; struct ext4_dir_entry_2 *de; - int ret = 1; + bool ret = true; err = ext4_get_inode_loc(dir, &iloc); if (err) { EXT4_ERROR_INODE(dir, "error %d getting inode %lu block", err, dir->i_ino); - return 1; + return true; } down_read(&EXT4_I(dir)->xattr_sem); @@ -1766,7 +1766,7 @@ int empty_inline_dir(struct inode *dir, int *has_inline_data) ext4_warning(dir->i_sb, "bad inline directory (dir #%lu) - no `..'", dir->i_ino); - ret = 1; + ret = true; goto out; } @@ -1784,11 +1784,11 @@ int empty_inline_dir(struct inode *dir, int *has_inline_data) dir->i_ino, le32_to_cpu(de->inode), le16_to_cpu(de->rec_len), de->name_len, inline_size); - ret = 1; + ret = true; goto out; } if (le32_to_cpu(de->inode)) { - ret = 0; + ret = false; goto out; } offset += ext4_rec_len_from_disk(de->rec_len, inline_size); diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c index ae44916d40e2..3131747199e1 100644 --- a/fs/ext4/inode.c +++ b/fs/ext4/inode.c @@ -51,25 +51,31 @@ static __u32 ext4_inode_csum(struct inode *inode, struct ext4_inode *raw, struct ext4_inode_info *ei) { struct ext4_sb_info *sbi = EXT4_SB(inode->i_sb); - __u16 csum_lo; - __u16 csum_hi = 0; __u32 csum; + __u16 dummy_csum = 0; + int offset = offsetof(struct ext4_inode, i_checksum_lo); + unsigned int csum_size = sizeof(dummy_csum); - csum_lo = le16_to_cpu(raw->i_checksum_lo); - raw->i_checksum_lo = 0; - if (EXT4_INODE_SIZE(inode->i_sb) > EXT4_GOOD_OLD_INODE_SIZE && - EXT4_FITS_IN_INODE(raw, ei, i_checksum_hi)) { - csum_hi = le16_to_cpu(raw->i_checksum_hi); - raw->i_checksum_hi = 0; - } - - csum = ext4_chksum(sbi, ei->i_csum_seed, (__u8 *)raw, - EXT4_INODE_SIZE(inode->i_sb)); + csum = ext4_chksum(sbi, ei->i_csum_seed, (__u8 *)raw, offset); + csum = ext4_chksum(sbi, csum, (__u8 *)&dummy_csum, csum_size); + offset += csum_size; + csum = ext4_chksum(sbi, csum, (__u8 *)raw + offset, + EXT4_GOOD_OLD_INODE_SIZE - offset); - raw->i_checksum_lo = cpu_to_le16(csum_lo); - if (EXT4_INODE_SIZE(inode->i_sb) > EXT4_GOOD_OLD_INODE_SIZE && - EXT4_FITS_IN_INODE(raw, ei, i_checksum_hi)) - raw->i_checksum_hi = cpu_to_le16(csum_hi); + if (EXT4_INODE_SIZE(inode->i_sb) > EXT4_GOOD_OLD_INODE_SIZE) { + offset = offsetof(struct ext4_inode, i_checksum_hi); + csum = ext4_chksum(sbi, csum, (__u8 *)raw + + EXT4_GOOD_OLD_INODE_SIZE, + offset - EXT4_GOOD_OLD_INODE_SIZE); + if (EXT4_FITS_IN_INODE(raw, ei, i_checksum_hi)) { + csum = ext4_chksum(sbi, csum, (__u8 *)&dummy_csum, + csum_size); + offset += csum_size; + csum = ext4_chksum(sbi, csum, (__u8 *)raw + offset, + EXT4_INODE_SIZE(inode->i_sb) - + offset); + } + } return csum; } @@ -205,9 +211,9 @@ void ext4_evict_inode(struct inode *inode) * Note that directories do not have this problem because they * don't use page cache. */ - if (ext4_should_journal_data(inode) && - (S_ISLNK(inode->i_mode) || S_ISREG(inode->i_mode)) && - inode->i_ino != EXT4_JOURNAL_INO) { + if (inode->i_ino != EXT4_JOURNAL_INO && + ext4_should_journal_data(inode) && + (S_ISLNK(inode->i_mode) || S_ISREG(inode->i_mode))) { journal_t *journal = EXT4_SB(inode->i_sb)->s_journal; tid_t commit_tid = EXT4_I(inode)->i_datasync_tid; @@ -386,7 +392,7 @@ int ext4_issue_zeroout(struct inode *inode, ext4_lblk_t lblk, ext4_fsblk_t pblk, int ret; if (ext4_encrypted_inode(inode)) - return ext4_encrypted_zeroout(inode, lblk, pblk, len); + return fscrypt_zeroout_range(inode, lblk, pblk, len); ret = sb_issue_zeroout(inode->i_sb, pblk, len, GFP_NOFS); if (ret > 0) @@ -1152,7 +1158,7 @@ static int ext4_block_write_begin(struct page *page, loff_t pos, unsigned len, if (unlikely(err)) page_zero_new_buffers(page, from, to); else if (decrypt) - err = ext4_decrypt(page); + err = fscrypt_decrypt_page(page); return err; } #endif @@ -2748,13 +2754,36 @@ retry: done = true; } } - ext4_journal_stop(handle); + /* + * Caution: If the handle is synchronous, + * ext4_journal_stop() can wait for transaction commit + * to finish which may depend on writeback of pages to + * complete or on page lock to be released. In that + * case, we have to wait until after after we have + * submitted all the IO, released page locks we hold, + * and dropped io_end reference (for extent conversion + * to be able to complete) before stopping the handle. + */ + if (!ext4_handle_valid(handle) || handle->h_sync == 0) { + ext4_journal_stop(handle); + handle = NULL; + } /* Submit prepared bio */ ext4_io_submit(&mpd.io_submit); /* Unlock pages we didn't use */ mpage_release_unused_pages(&mpd, give_up_on_write); - /* Drop our io_end reference we got from init */ - ext4_put_io_end(mpd.io_submit.io_end); + /* + * Drop our io_end reference we got from init. We have + * to be careful and use deferred io_end finishing if + * we are still holding the transaction as we can + * release the last reference to io_end which may end + * up doing unwritten extent conversion. + */ + if (handle) { + ext4_put_io_end_defer(mpd.io_submit.io_end); + ext4_journal_stop(handle); + } else + ext4_put_io_end(mpd.io_submit.io_end); if (ret == -ENOSPC && sbi->s_journal) { /* @@ -3706,9 +3735,9 @@ static int __ext4_block_zero_page_range(handle_t *handle, if (S_ISREG(inode->i_mode) && ext4_encrypted_inode(inode)) { /* We expect the key to be set. */ - BUG_ON(!ext4_has_encryption_key(inode)); + BUG_ON(!fscrypt_has_encryption_key(inode)); BUG_ON(blocksize != PAGE_SIZE); - WARN_ON_ONCE(ext4_decrypt(page)); + WARN_ON_ONCE(fscrypt_decrypt_page(page)); } } if (ext4_should_journal_data(inode)) { diff --git a/fs/ext4/ioctl.c b/fs/ext4/ioctl.c index 28cc412852af..10686fd67fb4 100644 --- a/fs/ext4/ioctl.c +++ b/fs/ext4/ioctl.c @@ -308,6 +308,7 @@ static int ext4_ioctl_setproject(struct file *filp, __u32 projid) kprojid_t kprojid; struct ext4_iloc iloc; struct ext4_inode *raw_inode; + struct dquot *transfer_to[MAXQUOTAS] = { }; if (!EXT4_HAS_RO_COMPAT_FEATURE(sb, EXT4_FEATURE_RO_COMPAT_PROJECT)) { @@ -361,17 +362,14 @@ static int ext4_ioctl_setproject(struct file *filp, __u32 projid) if (err) goto out_stop; - if (sb_has_quota_limits_enabled(sb, PRJQUOTA)) { - struct dquot *transfer_to[MAXQUOTAS] = { }; - - transfer_to[PRJQUOTA] = dqget(sb, make_kqid_projid(kprojid)); - if (!IS_ERR(transfer_to[PRJQUOTA])) { - err = __dquot_transfer(inode, transfer_to); - dqput(transfer_to[PRJQUOTA]); - if (err) - goto out_dirty; - } + transfer_to[PRJQUOTA] = dqget(sb, make_kqid_projid(kprojid)); + if (!IS_ERR(transfer_to[PRJQUOTA])) { + err = __dquot_transfer(inode, transfer_to); + dqput(transfer_to[PRJQUOTA]); + if (err) + goto out_dirty; } + EXT4_I(inode)->i_projid = kprojid; inode->i_ctime = ext4_current_time(inode); out_dirty: @@ -772,19 +770,13 @@ resizefs_out: return ext4_ext_precache(inode); case EXT4_IOC_SET_ENCRYPTION_POLICY: { #ifdef CONFIG_EXT4_FS_ENCRYPTION - struct ext4_encryption_policy policy; - int err = 0; + struct fscrypt_policy policy; if (copy_from_user(&policy, - (struct ext4_encryption_policy __user *)arg, - sizeof(policy))) { - err = -EFAULT; - goto encryption_policy_out; - } - - err = ext4_process_policy(&policy, inode); -encryption_policy_out: - return err; + (struct fscrypt_policy __user *)arg, + sizeof(policy))) + return -EFAULT; + return fscrypt_process_policy(inode, &policy); #else return -EOPNOTSUPP; #endif @@ -827,12 +819,12 @@ encryption_policy_out: } case EXT4_IOC_GET_ENCRYPTION_POLICY: { #ifdef CONFIG_EXT4_FS_ENCRYPTION - struct ext4_encryption_policy policy; + struct fscrypt_policy policy; int err = 0; if (!ext4_encrypted_inode(inode)) return -ENOENT; - err = ext4_get_policy(inode, &policy); + err = fscrypt_get_policy(inode, &policy); if (err) return err; if (copy_to_user((void __user *)arg, &policy, sizeof(policy))) diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c index c1ab3ec30423..f418f55c2bbe 100644 --- a/fs/ext4/mballoc.c +++ b/fs/ext4/mballoc.c @@ -2350,7 +2350,6 @@ static int ext4_mb_seq_groups_open(struct inode *inode, struct file *file) } const struct file_operations ext4_seq_mb_groups_fops = { - .owner = THIS_MODULE, .open = ext4_mb_seq_groups_open, .read = seq_read, .llseek = seq_lseek, @@ -2627,6 +2626,7 @@ int ext4_mb_init(struct super_block *sb) spin_lock_init(&sbi->s_md_lock); spin_lock_init(&sbi->s_bal_lock); + sbi->s_mb_free_pending = 0; sbi->s_mb_max_to_scan = MB_DEFAULT_MAX_TO_SCAN; sbi->s_mb_min_to_scan = MB_DEFAULT_MIN_TO_SCAN; @@ -2814,6 +2814,9 @@ static void ext4_free_data_callback(struct super_block *sb, /* we expect to find existing buddy because it's pinned */ BUG_ON(err != 0); + spin_lock(&EXT4_SB(sb)->s_md_lock); + EXT4_SB(sb)->s_mb_free_pending -= entry->efd_count; + spin_unlock(&EXT4_SB(sb)->s_md_lock); db = e4b.bd_info; /* there are blocks to put in buddy to make them really free */ @@ -2939,7 +2942,7 @@ ext4_mb_mark_diskspace_used(struct ext4_allocation_context *ac, ext4_error(sb, "Allocating blocks %llu-%llu which overlap " "fs metadata", block, block+len); /* File system mounted not to panic on error - * Fix the bitmap and repeat the block allocation + * Fix the bitmap and return EFSCORRUPTED * We leak some of the blocks here. */ ext4_lock_group(sb, ac->ac_b_ex.fe_group); @@ -2948,7 +2951,7 @@ ext4_mb_mark_diskspace_used(struct ext4_allocation_context *ac, ext4_unlock_group(sb, ac->ac_b_ex.fe_group); err = ext4_handle_dirty_metadata(handle, NULL, bitmap_bh); if (!err) - err = -EAGAIN; + err = -EFSCORRUPTED; goto out_err; } @@ -4513,18 +4516,7 @@ repeat: } if (likely(ac->ac_status == AC_STATUS_FOUND)) { *errp = ext4_mb_mark_diskspace_used(ac, handle, reserv_clstrs); - if (*errp == -EAGAIN) { - /* - * drop the reference that we took - * in ext4_mb_use_best_found - */ - ext4_mb_release_context(ac); - ac->ac_b_ex.fe_group = 0; - ac->ac_b_ex.fe_start = 0; - ac->ac_b_ex.fe_len = 0; - ac->ac_status = AC_STATUS_CONTINUE; - goto repeat; - } else if (*errp) { + if (*errp) { ext4_discard_allocated_blocks(ac); goto errout; } else { @@ -4583,6 +4575,7 @@ ext4_mb_free_metadata(handle_t *handle, struct ext4_buddy *e4b, { ext4_group_t group = e4b->bd_group; ext4_grpblk_t cluster; + ext4_grpblk_t clusters = new_entry->efd_count; struct ext4_free_data *entry; struct ext4_group_info *db = e4b->bd_info; struct super_block *sb = e4b->bd_sb; @@ -4649,8 +4642,11 @@ ext4_mb_free_metadata(handle_t *handle, struct ext4_buddy *e4b, } } /* Add the extent to transaction's private list */ - ext4_journal_callback_add(handle, ext4_free_data_callback, - &new_entry->efd_jce); + new_entry->efd_jce.jce_func = ext4_free_data_callback; + spin_lock(&sbi->s_md_lock); + _ext4_journal_callback_add(handle, &new_entry->efd_jce); + sbi->s_mb_free_pending += clusters; + spin_unlock(&sbi->s_md_lock); return 0; } diff --git a/fs/ext4/namei.c b/fs/ext4/namei.c index 6569c6b47da4..34c0142caf6a 100644 --- a/fs/ext4/namei.c +++ b/fs/ext4/namei.c @@ -420,15 +420,14 @@ static __le32 ext4_dx_csum(struct inode *inode, struct ext4_dir_entry *dirent, struct ext4_sb_info *sbi = EXT4_SB(inode->i_sb); struct ext4_inode_info *ei = EXT4_I(inode); __u32 csum; - __le32 save_csum; int size; + __u32 dummy_csum = 0; + int offset = offsetof(struct dx_tail, dt_checksum); size = count_offset + (count * sizeof(struct dx_entry)); - save_csum = t->dt_checksum; - t->dt_checksum = 0; csum = ext4_chksum(sbi, ei->i_csum_seed, (__u8 *)dirent, size); - csum = ext4_chksum(sbi, csum, (__u8 *)t, sizeof(struct dx_tail)); - t->dt_checksum = save_csum; + csum = ext4_chksum(sbi, csum, (__u8 *)t, offset); + csum = ext4_chksum(sbi, csum, (__u8 *)&dummy_csum, sizeof(dummy_csum)); return cpu_to_le32(csum); } @@ -446,14 +445,14 @@ static int ext4_dx_csum_verify(struct inode *inode, c = get_dx_countlimit(inode, dirent, &count_offset); if (!c) { EXT4_ERROR_INODE(inode, "dir seems corrupt? Run e2fsck -D."); - return 1; + return 0; } limit = le16_to_cpu(c->limit); count = le16_to_cpu(c->count); if (count_offset + (limit * sizeof(struct dx_entry)) > EXT4_BLOCK_SIZE(inode->i_sb) - sizeof(struct dx_tail)) { warn_no_space_for_csum(inode); - return 1; + return 0; } t = (struct dx_tail *)(((struct dx_entry *)c) + limit); @@ -612,19 +611,19 @@ static struct stats dx_show_leaf(struct inode *dir, #ifdef CONFIG_EXT4_FS_ENCRYPTION int len; char *name; - struct ext4_str fname_crypto_str - = {.name = NULL, .len = 0}; + struct fscrypt_str fname_crypto_str = + FSTR_INIT(NULL, 0); int res = 0; name = de->name; len = de->name_len; - if (ext4_encrypted_inode(inode)) - res = ext4_get_encryption_info(dir); + if (ext4_encrypted_inode(dir)) + res = fscrypt_get_encryption_info(dir); if (res) { printk(KERN_WARNING "Error setting up" " fname crypto: %d\n", res); } - if (ctx == NULL) { + if (!fscrypt_has_encryption_key(dir)) { /* Directory is not encrypted */ ext4fs_dirhash(de->name, de->name_len, &h); @@ -633,19 +632,21 @@ static struct stats dx_show_leaf(struct inode *dir, (unsigned) ((char *) de - base)); } else { + struct fscrypt_str de_name = + FSTR_INIT(name, len); + /* Directory is encrypted */ - res = ext4_fname_crypto_alloc_buffer( - ctx, de->name_len, + res = fscrypt_fname_alloc_buffer( + dir, len, &fname_crypto_str); - if (res < 0) { + if (res < 0) printk(KERN_WARNING "Error " "allocating crypto " "buffer--skipping " "crypto\n"); - ctx = NULL; - } - res = ext4_fname_disk_to_usr(ctx, NULL, de, - &fname_crypto_str); + res = fscrypt_fname_disk_to_usr(dir, + 0, 0, &de_name, + &fname_crypto_str); if (res < 0) { printk(KERN_WARNING "Error " "converting filename " @@ -662,8 +663,8 @@ static struct stats dx_show_leaf(struct inode *dir, printk("%*.s:(E)%x.%u ", len, name, h.hash, (unsigned) ((char *) de - base)); - ext4_fname_crypto_free_buffer( - &fname_crypto_str); + fscrypt_fname_free_buffer( + &fname_crypto_str); } #else int len = de->name_len; @@ -952,7 +953,7 @@ static int htree_dirblock_to_tree(struct file *dir_file, struct buffer_head *bh; struct ext4_dir_entry_2 *de, *top; int err = 0, count = 0; - struct ext4_str fname_crypto_str = {.name = NULL, .len = 0}, tmp_str; + struct fscrypt_str fname_crypto_str = FSTR_INIT(NULL, 0), tmp_str; dxtrace(printk(KERN_INFO "In htree dirblock_to_tree: block %lu\n", (unsigned long)block)); @@ -967,12 +968,12 @@ static int htree_dirblock_to_tree(struct file *dir_file, #ifdef CONFIG_EXT4_FS_ENCRYPTION /* Check if the directory is encrypted */ if (ext4_encrypted_inode(dir)) { - err = ext4_get_encryption_info(dir); + err = fscrypt_get_encryption_info(dir); if (err < 0) { brelse(bh); return err; } - err = ext4_fname_crypto_alloc_buffer(dir, EXT4_NAME_LEN, + err = fscrypt_fname_alloc_buffer(dir, EXT4_NAME_LEN, &fname_crypto_str); if (err < 0) { brelse(bh); @@ -1003,10 +1004,13 @@ static int htree_dirblock_to_tree(struct file *dir_file, &tmp_str); } else { int save_len = fname_crypto_str.len; + struct fscrypt_str de_name = FSTR_INIT(de->name, + de->name_len); /* Directory is encrypted */ - err = ext4_fname_disk_to_usr(dir, hinfo, de, - &fname_crypto_str); + err = fscrypt_fname_disk_to_usr(dir, hinfo->hash, + hinfo->minor_hash, &de_name, + &fname_crypto_str); if (err < 0) { count = err; goto errout; @@ -1025,7 +1029,7 @@ static int htree_dirblock_to_tree(struct file *dir_file, errout: brelse(bh); #ifdef CONFIG_EXT4_FS_ENCRYPTION - ext4_fname_crypto_free_buffer(&fname_crypto_str); + fscrypt_fname_free_buffer(&fname_crypto_str); #endif return count; } @@ -1050,7 +1054,7 @@ int ext4_htree_fill_tree(struct file *dir_file, __u32 start_hash, int count = 0; int ret, err; __u32 hashval; - struct ext4_str tmp_str; + struct fscrypt_str tmp_str; dxtrace(printk(KERN_DEBUG "In htree_fill_tree, start hash: %x:%x\n", start_hash, start_minor_hash)); @@ -1564,26 +1568,23 @@ static struct dentry *ext4_lookup(struct inode *dir, struct dentry *dentry, unsi struct ext4_dir_entry_2 *de; struct buffer_head *bh; - if (ext4_encrypted_inode(dir)) { - int res = ext4_get_encryption_info(dir); + if (ext4_encrypted_inode(dir)) { + int res = fscrypt_get_encryption_info(dir); /* - * This should be a properly defined flag for - * dentry->d_flags when we uplift this to the VFS. - * d_fsdata is set to (void *) 1 if if the dentry is + * DCACHE_ENCRYPTED_WITH_KEY is set if the dentry is * created while the directory was encrypted and we - * don't have access to the key. + * have access to the key. */ - dentry->d_fsdata = NULL; - if (ext4_encryption_info(dir)) - dentry->d_fsdata = (void *) 1; - d_set_d_op(dentry, &ext4_encrypted_d_ops); - if (res && res != -ENOKEY) - return ERR_PTR(res); - } + if (fscrypt_has_encryption_key(dir)) + fscrypt_set_encrypted_dentry(dentry); + fscrypt_set_d_op(dentry); + if (res && res != -ENOKEY) + return ERR_PTR(res); + } - if (dentry->d_name.len > EXT4_NAME_LEN) - return ERR_PTR(-ENAMETOOLONG); + if (dentry->d_name.len > EXT4_NAME_LEN) + return ERR_PTR(-ENAMETOOLONG); bh = ext4_find_entry(dir, &dentry->d_name, &de, NULL); if (IS_ERR(bh)) @@ -1610,11 +1611,9 @@ static struct dentry *ext4_lookup(struct inode *dir, struct dentry *dentry, unsi } if (!IS_ERR(inode) && ext4_encrypted_inode(dir) && (S_ISDIR(inode->i_mode) || S_ISLNK(inode->i_mode)) && - !ext4_is_child_context_consistent_with_parent(dir, - inode)) { + !fscrypt_has_permitted_context(dir, inode)) { int nokey = ext4_encrypted_inode(inode) && - !ext4_encryption_info(inode); - + !fscrypt_has_encryption_key(inode); iput(inode); if (nokey) return ERR_PTR(-ENOKEY); @@ -2691,30 +2690,30 @@ out_stop: /* * routine to check that the specified directory is empty (for rmdir) */ -int ext4_empty_dir(struct inode *inode) +bool ext4_empty_dir(struct inode *inode) { unsigned int offset; struct buffer_head *bh; struct ext4_dir_entry_2 *de, *de1; struct super_block *sb; - int err = 0; if (ext4_has_inline_data(inode)) { int has_inline_data = 1; + int ret; - err = empty_inline_dir(inode, &has_inline_data); + ret = empty_inline_dir(inode, &has_inline_data); if (has_inline_data) - return err; + return ret; } sb = inode->i_sb; if (inode->i_size < EXT4_DIR_REC_LEN(1) + EXT4_DIR_REC_LEN(2)) { EXT4_ERROR_INODE(inode, "invalid size"); - return 1; + return true; } bh = ext4_read_dirblock(inode, 0, EITHER); if (IS_ERR(bh)) - return 1; + return true; de = (struct ext4_dir_entry_2 *) bh->b_data; de1 = ext4_next_entry(de, sb->s_blocksize); @@ -2723,7 +2722,7 @@ int ext4_empty_dir(struct inode *inode) strcmp(".", de->name) || strcmp("..", de1->name)) { ext4_warning_inode(inode, "directory missing '.' and/or '..'"); brelse(bh); - return 1; + return true; } offset = ext4_rec_len_from_disk(de->rec_len, sb->s_blocksize) + ext4_rec_len_from_disk(de1->rec_len, sb->s_blocksize); @@ -2731,12 +2730,11 @@ int ext4_empty_dir(struct inode *inode) while (offset < inode->i_size) { if ((void *) de >= (void *) (bh->b_data+sb->s_blocksize)) { unsigned int lblock; - err = 0; brelse(bh); lblock = offset >> EXT4_BLOCK_SIZE_BITS(sb); bh = ext4_read_dirblock(inode, lblock, EITHER); if (IS_ERR(bh)) - return 1; + return true; de = (struct ext4_dir_entry_2 *) bh->b_data; } if (ext4_check_dir_entry(inode, NULL, de, bh, @@ -2748,13 +2746,13 @@ int ext4_empty_dir(struct inode *inode) } if (le32_to_cpu(de->inode)) { brelse(bh); - return 0; + return false; } offset += ext4_rec_len_from_disk(de->rec_len, sb->s_blocksize); de = ext4_next_entry(de, sb->s_blocksize); } brelse(bh); - return 1; + return true; } /* @@ -3077,8 +3075,8 @@ static int ext4_symlink(struct inode *dir, int err, len = strlen(symname); int credits; bool encryption_required; - struct ext4_str disk_link; - struct ext4_encrypted_symlink_data *sd = NULL; + struct fscrypt_str disk_link; + struct fscrypt_symlink_data *sd = NULL; disk_link.len = len + 1; disk_link.name = (char *) symname; @@ -3086,13 +3084,13 @@ static int ext4_symlink(struct inode *dir, encryption_required = (ext4_encrypted_inode(dir) || DUMMY_ENCRYPTION_ENABLED(EXT4_SB(dir->i_sb))); if (encryption_required) { - err = ext4_get_encryption_info(dir); + err = fscrypt_get_encryption_info(dir); if (err) return err; - if (ext4_encryption_info(dir) == NULL) + if (!fscrypt_has_encryption_key(dir)) return -EPERM; - disk_link.len = (ext4_fname_encrypted_size(dir, len) + - sizeof(struct ext4_encrypted_symlink_data)); + disk_link.len = (fscrypt_fname_encrypted_size(dir, len) + + sizeof(struct fscrypt_symlink_data)); sd = kzalloc(disk_link.len, GFP_KERNEL); if (!sd) return -ENOMEM; @@ -3140,13 +3138,12 @@ static int ext4_symlink(struct inode *dir, if (encryption_required) { struct qstr istr; - struct ext4_str ostr; + struct fscrypt_str ostr = + FSTR_INIT(sd->encrypted_path, disk_link.len); istr.name = (const unsigned char *) symname; istr.len = len; - ostr.name = sd->encrypted_path; - ostr.len = disk_link.len; - err = ext4_fname_usr_to_disk(inode, &istr, &ostr); + err = fscrypt_fname_usr_to_disk(inode, &istr, &ostr); if (err < 0) goto err_drop_inode; sd->len = cpu_to_le16(ostr.len); @@ -3235,7 +3232,7 @@ static int ext4_link(struct dentry *old_dentry, if (inode->i_nlink >= EXT4_LINK_MAX) return -EMLINK; if (ext4_encrypted_inode(dir) && - !ext4_is_child_context_consistent_with_parent(dir, inode)) + !fscrypt_has_permitted_context(dir, inode)) return -EPERM; if ((ext4_test_inode_flag(dir, EXT4_INODE_PROJINHERIT)) && @@ -3558,8 +3555,7 @@ static int ext4_rename(struct inode *old_dir, struct dentry *old_dentry, if ((old.dir != new.dir) && ext4_encrypted_inode(new.dir) && - !ext4_is_child_context_consistent_with_parent(new.dir, - old.inode)) { + !fscrypt_has_permitted_context(new.dir, old.inode)) { retval = -EPERM; goto end_rename; } @@ -3731,10 +3727,8 @@ static int ext4_cross_rename(struct inode *old_dir, struct dentry *old_dentry, if ((ext4_encrypted_inode(old_dir) || ext4_encrypted_inode(new_dir)) && (old_dir != new_dir) && - (!ext4_is_child_context_consistent_with_parent(new_dir, - old.inode) || - !ext4_is_child_context_consistent_with_parent(old_dir, - new.inode))) + (!fscrypt_has_permitted_context(new_dir, old.inode) || + !fscrypt_has_permitted_context(old_dir, new.inode))) return -EPERM; if ((ext4_test_inode_flag(new_dir, EXT4_INODE_PROJINHERIT) && diff --git a/fs/ext4/page-io.c b/fs/ext4/page-io.c index 5185fed40fab..a6132a730967 100644 --- a/fs/ext4/page-io.c +++ b/fs/ext4/page-io.c @@ -24,6 +24,7 @@ #include <linux/slab.h> #include <linux/mm.h> #include <linux/backing-dev.h> +#include <linux/fscrypto.h> #include "ext4_jbd2.h" #include "xattr.h" @@ -67,7 +68,6 @@ static void ext4_finish_bio(struct bio *bio) struct page *page = bvec->bv_page; #ifdef CONFIG_EXT4_FS_ENCRYPTION struct page *data_page = NULL; - struct ext4_crypto_ctx *ctx = NULL; #endif struct buffer_head *bh, *head; unsigned bio_start = bvec->bv_offset; @@ -82,8 +82,7 @@ static void ext4_finish_bio(struct bio *bio) if (!page->mapping) { /* The bounce data pages are unmapped. */ data_page = page; - ctx = (struct ext4_crypto_ctx *)page_private(data_page); - page = ctx->w.control_page; + fscrypt_pullback_bio_page(&page, false); } #endif @@ -113,8 +112,8 @@ static void ext4_finish_bio(struct bio *bio) local_irq_restore(flags); if (!under_io) { #ifdef CONFIG_EXT4_FS_ENCRYPTION - if (ctx) - ext4_restore_control_page(data_page); + if (data_page) + fscrypt_restore_control_page(data_page); #endif end_page_writeback(page); } @@ -473,7 +472,7 @@ int ext4_bio_write_page(struct ext4_io_submit *io, gfp_t gfp_flags = GFP_NOFS; retry_encrypt: - data_page = ext4_encrypt(inode, page, gfp_flags); + data_page = fscrypt_encrypt_page(inode, page, gfp_flags); if (IS_ERR(data_page)) { ret = PTR_ERR(data_page); if (ret == -ENOMEM && wbc->sync_mode == WB_SYNC_ALL) { @@ -511,7 +510,7 @@ int ext4_bio_write_page(struct ext4_io_submit *io, if (ret) { out: if (data_page) - ext4_restore_control_page(data_page); + fscrypt_restore_control_page(data_page); printk_ratelimited(KERN_ERR "%s: ret = %d\n", __func__, ret); redirty_page_for_writepage(wbc, page); do { diff --git a/fs/ext4/readpage.c b/fs/ext4/readpage.c index 2ced5a823354..a81b829d56de 100644 --- a/fs/ext4/readpage.c +++ b/fs/ext4/readpage.c @@ -46,37 +46,6 @@ #include "ext4.h" -/* - * Call ext4_decrypt on every single page, reusing the encryption - * context. - */ -static void completion_pages(struct work_struct *work) -{ -#ifdef CONFIG_EXT4_FS_ENCRYPTION - struct ext4_crypto_ctx *ctx = - container_of(work, struct ext4_crypto_ctx, r.work); - struct bio *bio = ctx->r.bio; - struct bio_vec *bv; - int i; - - bio_for_each_segment_all(bv, bio, i) { - struct page *page = bv->bv_page; - - int ret = ext4_decrypt(page); - if (ret) { - WARN_ON_ONCE(1); - SetPageError(page); - } else - SetPageUptodate(page); - unlock_page(page); - } - ext4_release_crypto_ctx(ctx); - bio_put(bio); -#else - BUG(); -#endif -} - static inline bool ext4_bio_encrypted(struct bio *bio) { #ifdef CONFIG_EXT4_FS_ENCRYPTION @@ -104,14 +73,10 @@ static void mpage_end_io(struct bio *bio) int i; if (ext4_bio_encrypted(bio)) { - struct ext4_crypto_ctx *ctx = bio->bi_private; - if (bio->bi_error) { - ext4_release_crypto_ctx(ctx); + fscrypt_release_ctx(bio->bi_private); } else { - INIT_WORK(&ctx->r.work, completion_pages); - ctx->r.bio = bio; - queue_work(ext4_read_workqueue, &ctx->r.work); + fscrypt_decrypt_bio_pages(bio->bi_private, bio); return; } } @@ -135,7 +100,6 @@ int ext4_mpage_readpages(struct address_space *mapping, unsigned nr_pages) { struct bio *bio = NULL; - unsigned page_idx; sector_t last_block_in_bio = 0; struct inode *inode = mapping->host; @@ -157,7 +121,7 @@ int ext4_mpage_readpages(struct address_space *mapping, map.m_len = 0; map.m_flags = 0; - for (page_idx = 0; nr_pages; page_idx++, nr_pages--) { + for (; nr_pages; nr_pages--) { int fully_mapped = 1; unsigned first_hole = blocks_per_page; @@ -166,7 +130,7 @@ int ext4_mpage_readpages(struct address_space *mapping, page = list_entry(pages->prev, struct page, lru); list_del(&page->lru); if (add_to_page_cache_lru(page, mapping, page->index, - mapping_gfp_constraint(mapping, GFP_KERNEL))) + readahead_gfp_mask(mapping))) goto next_page; } @@ -275,11 +239,11 @@ int ext4_mpage_readpages(struct address_space *mapping, bio = NULL; } if (bio == NULL) { - struct ext4_crypto_ctx *ctx = NULL; + struct fscrypt_ctx *ctx = NULL; if (ext4_encrypted_inode(inode) && S_ISREG(inode->i_mode)) { - ctx = ext4_get_crypto_ctx(inode, GFP_NOFS); + ctx = fscrypt_get_ctx(inode, GFP_NOFS); if (IS_ERR(ctx)) goto set_error_page; } @@ -287,7 +251,7 @@ int ext4_mpage_readpages(struct address_space *mapping, min_t(int, nr_pages, BIO_MAX_PAGES)); if (!bio) { if (ctx) - ext4_release_crypto_ctx(ctx); + fscrypt_release_ctx(ctx); goto set_error_page; } bio->bi_bdev = bdev; diff --git a/fs/ext4/super.c b/fs/ext4/super.c index b1a347100d54..1c593aa0218e 100644 --- a/fs/ext4/super.c +++ b/fs/ext4/super.c @@ -945,9 +945,6 @@ static struct inode *ext4_alloc_inode(struct super_block *sb) ei->i_datasync_tid = 0; atomic_set(&ei->i_unwritten, 0); INIT_WORK(&ei->i_rsv_conversion_work, ext4_end_io_rsv_work); -#ifdef CONFIG_EXT4_FS_ENCRYPTION - ei->i_crypt_info = NULL; -#endif return &ei->vfs_inode; } @@ -1026,8 +1023,7 @@ void ext4_clear_inode(struct inode *inode) EXT4_I(inode)->jinode = NULL; } #ifdef CONFIG_EXT4_FS_ENCRYPTION - if (EXT4_I(inode)->i_crypt_info) - ext4_free_encryption_info(inode, EXT4_I(inode)->i_crypt_info); + fscrypt_put_encryption_info(inode, NULL); #endif } @@ -1094,6 +1090,90 @@ static int bdev_try_to_free_page(struct super_block *sb, struct page *page, return try_to_free_buffers(page); } +#ifdef CONFIG_EXT4_FS_ENCRYPTION +static int ext4_get_context(struct inode *inode, void *ctx, size_t len) +{ + return ext4_xattr_get(inode, EXT4_XATTR_INDEX_ENCRYPTION, + EXT4_XATTR_NAME_ENCRYPTION_CONTEXT, ctx, len); +} + +static int ext4_key_prefix(struct inode *inode, u8 **key) +{ + *key = EXT4_SB(inode->i_sb)->key_prefix; + return EXT4_SB(inode->i_sb)->key_prefix_size; +} + +static int ext4_prepare_context(struct inode *inode) +{ + return ext4_convert_inline_data(inode); +} + +static int ext4_set_context(struct inode *inode, const void *ctx, size_t len, + void *fs_data) +{ + handle_t *handle; + int res, res2; + + /* fs_data is null when internally used. */ + if (fs_data) { + res = ext4_xattr_set(inode, EXT4_XATTR_INDEX_ENCRYPTION, + EXT4_XATTR_NAME_ENCRYPTION_CONTEXT, ctx, + len, 0); + if (!res) { + ext4_set_inode_flag(inode, EXT4_INODE_ENCRYPT); + ext4_clear_inode_state(inode, + EXT4_STATE_MAY_INLINE_DATA); + } + return res; + } + + handle = ext4_journal_start(inode, EXT4_HT_MISC, + ext4_jbd2_credits_xattr(inode)); + if (IS_ERR(handle)) + return PTR_ERR(handle); + + res = ext4_xattr_set(inode, EXT4_XATTR_INDEX_ENCRYPTION, + EXT4_XATTR_NAME_ENCRYPTION_CONTEXT, ctx, + len, 0); + if (!res) { + ext4_set_inode_flag(inode, EXT4_INODE_ENCRYPT); + res = ext4_mark_inode_dirty(handle, inode); + if (res) + EXT4_ERROR_INODE(inode, "Failed to mark inode dirty"); + } + res2 = ext4_journal_stop(handle); + if (!res) + res = res2; + return res; +} + +static int ext4_dummy_context(struct inode *inode) +{ + return DUMMY_ENCRYPTION_ENABLED(EXT4_SB(inode->i_sb)); +} + +static unsigned ext4_max_namelen(struct inode *inode) +{ + return S_ISLNK(inode->i_mode) ? inode->i_sb->s_blocksize : + EXT4_NAME_LEN; +} + +static struct fscrypt_operations ext4_cryptops = { + .get_context = ext4_get_context, + .key_prefix = ext4_key_prefix, + .prepare_context = ext4_prepare_context, + .set_context = ext4_set_context, + .dummy_context = ext4_dummy_context, + .is_encrypted = ext4_encrypted_inode, + .empty_dir = ext4_empty_dir, + .max_namelen = ext4_max_namelen, +}; +#else +static struct fscrypt_operations ext4_cryptops = { + .is_encrypted = ext4_encrypted_inode, +}; +#endif + #ifdef CONFIG_QUOTA static char *quotatypes[] = INITQFNAMES; #define QTYPE2NAME(t) (quotatypes[t]) @@ -2068,23 +2148,25 @@ failed: static __le16 ext4_group_desc_csum(struct super_block *sb, __u32 block_group, struct ext4_group_desc *gdp) { - int offset; + int offset = offsetof(struct ext4_group_desc, bg_checksum); __u16 crc = 0; __le32 le_group = cpu_to_le32(block_group); struct ext4_sb_info *sbi = EXT4_SB(sb); if (ext4_has_metadata_csum(sbi->s_sb)) { /* Use new metadata_csum algorithm */ - __le16 save_csum; __u32 csum32; + __u16 dummy_csum = 0; - save_csum = gdp->bg_checksum; - gdp->bg_checksum = 0; csum32 = ext4_chksum(sbi, sbi->s_csum_seed, (__u8 *)&le_group, sizeof(le_group)); - csum32 = ext4_chksum(sbi, csum32, (__u8 *)gdp, - sbi->s_desc_size); - gdp->bg_checksum = save_csum; + csum32 = ext4_chksum(sbi, csum32, (__u8 *)gdp, offset); + csum32 = ext4_chksum(sbi, csum32, (__u8 *)&dummy_csum, + sizeof(dummy_csum)); + offset += sizeof(dummy_csum); + if (offset < sbi->s_desc_size) + csum32 = ext4_chksum(sbi, csum32, (__u8 *)gdp + offset, + sbi->s_desc_size - offset); crc = csum32 & 0xFFFF; goto out; @@ -2094,8 +2176,6 @@ static __le16 ext4_group_desc_csum(struct super_block *sb, __u32 block_group, if (!ext4_has_feature_gdt_csum(sb)) return 0; - offset = offsetof(struct ext4_group_desc, bg_checksum); - crc = crc16(~0, sbi->s_es->s_uuid, sizeof(sbi->s_es->s_uuid)); crc = crc16(crc, (__u8 *)&le_group, sizeof(le_group)); crc = crc16(crc, (__u8 *)gdp, offset); @@ -2278,6 +2358,16 @@ static void ext4_orphan_cleanup(struct super_block *sb, while (es->s_last_orphan) { struct inode *inode; + /* + * We may have encountered an error during cleanup; if + * so, skip the rest. + */ + if (EXT4_SB(sb)->s_mount_state & EXT4_ERROR_FS) { + jbd_debug(1, "Skipping orphan recovery on fs with errors.\n"); + es->s_last_orphan = 0; + break; + } + inode = ext4_orphan_get(sb, le32_to_cpu(es->s_last_orphan)); if (IS_ERR(inode)) { es->s_last_orphan = 0; @@ -3416,6 +3506,13 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent) goto failed_mount; } + if (le16_to_cpu(sbi->s_es->s_reserved_gdt_blocks) > (blocksize / 4)) { + ext4_msg(sb, KERN_ERR, + "Number of reserved GDT blocks insanely large: %d", + le16_to_cpu(sbi->s_es->s_reserved_gdt_blocks)); + goto failed_mount; + } + if (sbi->s_mount_opt & EXT4_MOUNT_DAX) { err = bdev_dax_supported(sb, blocksize); if (err) @@ -3686,6 +3783,7 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent) sb->s_op = &ext4_sops; sb->s_export_op = &ext4_export_ops; sb->s_xattr = ext4_xattr_handlers; + sb->s_cop = &ext4_cryptops; #ifdef CONFIG_QUOTA sb->dq_op = &ext4_quota_operations; if (ext4_has_feature_quota(sb)) @@ -3996,6 +4094,11 @@ no_journal: ratelimit_state_init(&sbi->s_msg_ratelimit_state, 5 * HZ, 10); kfree(orig_data); +#ifdef CONFIG_EXT4_FS_ENCRYPTION + memcpy(sbi->key_prefix, EXT4_KEY_DESC_PREFIX, + EXT4_KEY_DESC_PREFIX_SIZE); + sbi->key_prefix_size = EXT4_KEY_DESC_PREFIX_SIZE; +#endif return 0; cantfind_ext4: @@ -4327,20 +4430,6 @@ static int ext4_commit_super(struct super_block *sb, int sync) if (!sbh || block_device_ejected(sb)) return error; - if (buffer_write_io_error(sbh)) { - /* - * Oh, dear. A previous attempt to write the - * superblock failed. This could happen because the - * USB device was yanked out. Or it could happen to - * be a transient write error and maybe the block will - * be remapped. Nothing we can do but to retry the - * write and hope for the best. - */ - ext4_msg(sb, KERN_ERR, "previous I/O error to " - "superblock detected"); - clear_buffer_write_io_error(sbh); - set_buffer_uptodate(sbh); - } /* * If the file system is mounted read-only, don't update the * superblock write time. This avoids updating the superblock @@ -4371,7 +4460,23 @@ static int ext4_commit_super(struct super_block *sb, int sync) &EXT4_SB(sb)->s_freeinodes_counter)); BUFFER_TRACE(sbh, "marking dirty"); ext4_superblock_csum_set(sb); + lock_buffer(sbh); + if (buffer_write_io_error(sbh)) { + /* + * Oh, dear. A previous attempt to write the + * superblock failed. This could happen because the + * USB device was yanked out. Or it could happen to + * be a transient write error and maybe the block will + * be remapped. Nothing we can do but to retry the + * write and hope for the best. + */ + ext4_msg(sb, KERN_ERR, "previous I/O error to " + "superblock detected"); + clear_buffer_write_io_error(sbh); + set_buffer_uptodate(sbh); + } mark_buffer_dirty(sbh); + unlock_buffer(sbh); if (sync) { error = __sync_dirty_buffer(sbh, test_opt(sb, BARRIER) ? WRITE_FUA : WRITE_SYNC); @@ -5422,7 +5527,6 @@ out5: static void __exit ext4_exit_fs(void) { - ext4_exit_crypto(); ext4_destroy_lazyinit_thread(); unregister_as_ext2(); unregister_as_ext3(); diff --git a/fs/ext4/symlink.c b/fs/ext4/symlink.c index 75ed5c2f0c16..4d83d9e05f2e 100644 --- a/fs/ext4/symlink.c +++ b/fs/ext4/symlink.c @@ -22,23 +22,22 @@ #include "ext4.h" #include "xattr.h" -#ifdef CONFIG_EXT4_FS_ENCRYPTION static const char *ext4_encrypted_get_link(struct dentry *dentry, struct inode *inode, struct delayed_call *done) { struct page *cpage = NULL; char *caddr, *paddr = NULL; - struct ext4_str cstr, pstr; - struct ext4_encrypted_symlink_data *sd; + struct fscrypt_str cstr, pstr; + struct fscrypt_symlink_data *sd; loff_t size = min_t(loff_t, i_size_read(inode), PAGE_SIZE - 1); int res; - u32 plen, max_size = inode->i_sb->s_blocksize; + u32 max_size = inode->i_sb->s_blocksize; if (!dentry) return ERR_PTR(-ECHILD); - res = ext4_get_encryption_info(inode); + res = fscrypt_get_encryption_info(inode); if (res) return ERR_PTR(res); @@ -54,30 +53,27 @@ static const char *ext4_encrypted_get_link(struct dentry *dentry, } /* Symlink is encrypted */ - sd = (struct ext4_encrypted_symlink_data *)caddr; + sd = (struct fscrypt_symlink_data *)caddr; cstr.name = sd->encrypted_path; cstr.len = le16_to_cpu(sd->len); - if ((cstr.len + - sizeof(struct ext4_encrypted_symlink_data) - 1) > - max_size) { + if ((cstr.len + sizeof(struct fscrypt_symlink_data) - 1) > max_size) { /* Symlink data on the disk is corrupted */ res = -EFSCORRUPTED; goto errout; } - plen = (cstr.len < EXT4_FNAME_CRYPTO_DIGEST_SIZE*2) ? - EXT4_FNAME_CRYPTO_DIGEST_SIZE*2 : cstr.len; - paddr = kmalloc(plen + 1, GFP_NOFS); - if (!paddr) { - res = -ENOMEM; + + res = fscrypt_fname_alloc_buffer(inode, cstr.len, &pstr); + if (res) goto errout; - } - pstr.name = paddr; - pstr.len = plen; - res = _ext4_fname_disk_to_usr(inode, NULL, &cstr, &pstr); + + res = fscrypt_fname_disk_to_usr(inode, 0, 0, &cstr, &pstr); if (res < 0) goto errout; + + paddr = pstr.name; + /* Null-terminate the name */ - if (res <= plen) + if (res <= pstr.len) paddr[res] = '\0'; if (cpage) put_page(cpage); @@ -99,7 +95,6 @@ const struct inode_operations ext4_encrypted_symlink_inode_operations = { .listxattr = ext4_listxattr, .removexattr = generic_removexattr, }; -#endif const struct inode_operations ext4_symlink_inode_operations = { .readlink = generic_readlink, diff --git a/fs/ext4/sysfs.c b/fs/ext4/sysfs.c index 1420a3c614af..73bcfd41f5f2 100644 --- a/fs/ext4/sysfs.c +++ b/fs/ext4/sysfs.c @@ -359,7 +359,6 @@ static int name##_open(struct inode *inode, struct file *file) \ } \ \ static const struct file_operations ext4_seq_##name##_fops = { \ - .owner = THIS_MODULE, \ .open = name##_open, \ .read = seq_read, \ .llseek = seq_lseek, \ diff --git a/fs/ext4/xattr.c b/fs/ext4/xattr.c index e79bd32b9b79..39e9cfb1b371 100644 --- a/fs/ext4/xattr.c +++ b/fs/ext4/xattr.c @@ -121,17 +121,18 @@ static __le32 ext4_xattr_block_csum(struct inode *inode, { struct ext4_sb_info *sbi = EXT4_SB(inode->i_sb); __u32 csum; - __le32 save_csum; __le64 dsk_block_nr = cpu_to_le64(block_nr); + __u32 dummy_csum = 0; + int offset = offsetof(struct ext4_xattr_header, h_checksum); - save_csum = hdr->h_checksum; - hdr->h_checksum = 0; csum = ext4_chksum(sbi, sbi->s_csum_seed, (__u8 *)&dsk_block_nr, sizeof(dsk_block_nr)); - csum = ext4_chksum(sbi, csum, (__u8 *)hdr, - EXT4_BLOCK_SIZE(inode->i_sb)); + csum = ext4_chksum(sbi, csum, (__u8 *)hdr, offset); + csum = ext4_chksum(sbi, csum, (__u8 *)&dummy_csum, sizeof(dummy_csum)); + offset += sizeof(dummy_csum); + csum = ext4_chksum(sbi, csum, (__u8 *)hdr + offset, + EXT4_BLOCK_SIZE(inode->i_sb) - offset); - hdr->h_checksum = save_csum; return cpu_to_le32(csum); } diff --git a/fs/f2fs/acl.c b/fs/f2fs/acl.c index a31c7e859af6..4dcc9e28dc5c 100644 --- a/fs/f2fs/acl.c +++ b/fs/f2fs/acl.c @@ -201,7 +201,6 @@ struct posix_acl *f2fs_get_acl(struct inode *inode, int type) static int __f2fs_set_acl(struct inode *inode, int type, struct posix_acl *acl, struct page *ipage) { - struct f2fs_inode_info *fi = F2FS_I(inode); int name_index; void *value = NULL; size_t size = 0; @@ -214,7 +213,7 @@ static int __f2fs_set_acl(struct inode *inode, int type, error = posix_acl_equiv_mode(acl, &inode->i_mode); if (error < 0) return error; - set_acl_inode(fi, inode->i_mode); + set_acl_inode(inode, inode->i_mode); if (error == 0) acl = NULL; } @@ -233,7 +232,7 @@ static int __f2fs_set_acl(struct inode *inode, int type, if (acl) { value = f2fs_acl_to_disk(acl, &size); if (IS_ERR(value)) { - clear_inode_flag(fi, FI_ACL_MODE); + clear_inode_flag(inode, FI_ACL_MODE); return (int)PTR_ERR(value); } } @@ -244,7 +243,7 @@ static int __f2fs_set_acl(struct inode *inode, int type, if (!error) set_cached_acl(inode, type, acl); - clear_inode_flag(fi, FI_ACL_MODE); + clear_inode_flag(inode, FI_ACL_MODE); return error; } @@ -385,6 +384,8 @@ int f2fs_init_acl(struct inode *inode, struct inode *dir, struct page *ipage, if (error) return error; + f2fs_mark_inode_dirty_sync(inode); + if (default_acl) { error = __f2fs_set_acl(inode, ACL_TYPE_DEFAULT, default_acl, ipage); diff --git a/fs/f2fs/acl.h b/fs/f2fs/acl.h index 997ca8edb6cb..b2334d11dae8 100644 --- a/fs/f2fs/acl.h +++ b/fs/f2fs/acl.h @@ -37,7 +37,7 @@ struct f2fs_acl_header { #ifdef CONFIG_F2FS_FS_POSIX_ACL extern struct posix_acl *f2fs_get_acl(struct inode *, int); -extern int f2fs_set_acl(struct inode *inode, struct posix_acl *acl, int type); +extern int f2fs_set_acl(struct inode *, struct posix_acl *, int); extern int f2fs_init_acl(struct inode *, struct inode *, struct page *, struct page *); #else diff --git a/fs/f2fs/checkpoint.c b/fs/f2fs/checkpoint.c index 124b4a3017b5..f94d01e7d001 100644 --- a/fs/f2fs/checkpoint.c +++ b/fs/f2fs/checkpoint.c @@ -48,7 +48,8 @@ repeat: goto repeat; } f2fs_wait_on_page_writeback(page, META, true); - SetPageUptodate(page); + if (!PageUptodate(page)) + SetPageUptodate(page); return page; } @@ -266,6 +267,7 @@ static int f2fs_write_meta_pages(struct address_space *mapping, struct writeback_control *wbc) { struct f2fs_sb_info *sbi = F2FS_M_SB(mapping); + struct blk_plug plug; long diff, written; /* collect a number of dirty meta pages and write together */ @@ -278,7 +280,9 @@ static int f2fs_write_meta_pages(struct address_space *mapping, /* if mounting is failed, skip writing node pages */ mutex_lock(&sbi->cp_mutex); diff = nr_pages_to_write(sbi, META, wbc); + blk_start_plug(&plug); written = sync_meta_pages(sbi, META, wbc->nr_to_write); + blk_finish_plug(&plug); mutex_unlock(&sbi->cp_mutex); wbc->nr_to_write = max((long)0, wbc->nr_to_write - written - diff); return 0; @@ -366,9 +370,10 @@ static int f2fs_set_meta_page_dirty(struct page *page) { trace_f2fs_set_page_dirty(page, META); - SetPageUptodate(page); + if (!PageUptodate(page)) + SetPageUptodate(page); if (!PageDirty(page)) { - __set_page_dirty_nobuffers(page); + f2fs_set_page_dirty_nobuffers(page); inc_page_count(F2FS_P_SB(page), F2FS_DIRTY_META); SetPagePrivate(page); f2fs_trace_pid(page); @@ -510,10 +515,11 @@ void release_orphan_inode(struct f2fs_sb_info *sbi) spin_unlock(&im->ino_lock); } -void add_orphan_inode(struct f2fs_sb_info *sbi, nid_t ino) +void add_orphan_inode(struct inode *inode) { /* add new orphan ino entry into list */ - __add_ino_entry(sbi, ino, ORPHAN_INO); + __add_ino_entry(F2FS_I_SB(inode), inode->i_ino, ORPHAN_INO); + update_inode_page(inode); } void remove_orphan_inode(struct f2fs_sb_info *sbi, nid_t ino) @@ -761,28 +767,25 @@ fail_no_cp: static void __add_dirty_inode(struct inode *inode, enum inode_type type) { struct f2fs_sb_info *sbi = F2FS_I_SB(inode); - struct f2fs_inode_info *fi = F2FS_I(inode); int flag = (type == DIR_INODE) ? FI_DIRTY_DIR : FI_DIRTY_FILE; - if (is_inode_flag_set(fi, flag)) + if (is_inode_flag_set(inode, flag)) return; - set_inode_flag(fi, flag); - list_add_tail(&fi->dirty_list, &sbi->inode_list[type]); + set_inode_flag(inode, flag); + list_add_tail(&F2FS_I(inode)->dirty_list, &sbi->inode_list[type]); stat_inc_dirty_inode(sbi, type); } static void __remove_dirty_inode(struct inode *inode, enum inode_type type) { - struct f2fs_inode_info *fi = F2FS_I(inode); int flag = (type == DIR_INODE) ? FI_DIRTY_DIR : FI_DIRTY_FILE; - if (get_dirty_pages(inode) || - !is_inode_flag_set(F2FS_I(inode), flag)) + if (get_dirty_pages(inode) || !is_inode_flag_set(inode, flag)) return; - list_del_init(&fi->dirty_list); - clear_inode_flag(fi, flag); + list_del_init(&F2FS_I(inode)->dirty_list); + clear_inode_flag(inode, flag); stat_dec_dirty_inode(F2FS_I_SB(inode), type); } @@ -795,13 +798,12 @@ void update_dirty_page(struct inode *inode, struct page *page) !S_ISLNK(inode->i_mode)) return; - if (type != FILE_INODE || test_opt(sbi, DATA_FLUSH)) { - spin_lock(&sbi->inode_lock[type]); + spin_lock(&sbi->inode_lock[type]); + if (type != FILE_INODE || test_opt(sbi, DATA_FLUSH)) __add_dirty_inode(inode, type); - spin_unlock(&sbi->inode_lock[type]); - } - inode_inc_dirty_pages(inode); + spin_unlock(&sbi->inode_lock[type]); + SetPagePrivate(page); f2fs_trace_pid(page); } @@ -864,6 +866,34 @@ retry: goto retry; } +int f2fs_sync_inode_meta(struct f2fs_sb_info *sbi) +{ + struct list_head *head = &sbi->inode_list[DIRTY_META]; + struct inode *inode; + struct f2fs_inode_info *fi; + s64 total = get_pages(sbi, F2FS_DIRTY_IMETA); + + while (total--) { + if (unlikely(f2fs_cp_error(sbi))) + return -EIO; + + spin_lock(&sbi->inode_lock[DIRTY_META]); + if (list_empty(head)) { + spin_unlock(&sbi->inode_lock[DIRTY_META]); + return 0; + } + fi = list_entry(head->next, struct f2fs_inode_info, + gdirty_list); + inode = igrab(&fi->vfs_inode); + spin_unlock(&sbi->inode_lock[DIRTY_META]); + if (inode) { + update_inode_page(inode); + iput(inode); + } + }; + return 0; +} + /* * Freeze all the FS-operations for checkpoint. */ @@ -890,6 +920,14 @@ retry_flush_dents: goto retry_flush_dents; } + if (get_pages(sbi, F2FS_DIRTY_IMETA)) { + f2fs_unlock_all(sbi); + err = f2fs_sync_inode_meta(sbi); + if (err) + goto out; + goto retry_flush_dents; + } + /* * POR: we should ensure that there are no dirty node pages * until finishing nat/sit flush. @@ -914,6 +952,8 @@ out: static void unblock_operations(struct f2fs_sb_info *sbi) { up_write(&sbi->node_write); + + build_free_nids(sbi); f2fs_unlock_all(sbi); } @@ -954,7 +994,7 @@ static int do_checkpoint(struct f2fs_sb_info *sbi, struct cp_control *cpc) * This avoids to conduct wrong roll-forward operations and uses * metapages, so should be called prior to sync_meta_pages below. */ - if (discard_next_dnode(sbi, discard_blk)) + if (!test_opt(sbi, LFS) && discard_next_dnode(sbi, discard_blk)) invalidate = true; /* Flush all the NAT/SIT pages */ diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c index 8769e8349dff..e2624275d828 100644 --- a/fs/f2fs/data.c +++ b/fs/f2fs/data.c @@ -19,6 +19,8 @@ #include <linux/bio.h> #include <linux/prefetch.h> #include <linux/uio.h> +#include <linux/mm.h> +#include <linux/memcontrol.h> #include <linux/cleancache.h> #include "f2fs.h" @@ -45,7 +47,8 @@ static void f2fs_read_end_io(struct bio *bio) struct page *page = bvec->bv_page; if (!bio->bi_error) { - SetPageUptodate(page); + if (!PageUptodate(page)) + SetPageUptodate(page); } else { ClearPageUptodate(page); SetPageError(page); @@ -97,10 +100,15 @@ static struct bio *__bio_alloc(struct f2fs_sb_info *sbi, block_t blk_addr, return bio; } -static inline void __submit_bio(struct f2fs_sb_info *sbi, struct bio *bio) +static inline void __submit_bio(struct f2fs_sb_info *sbi, + struct bio *bio, enum page_type type) { - if (!is_read_io(bio_op(bio))) + if (!is_read_io(bio_op(bio))) { atomic_inc(&sbi->nr_wb_bios); + if (f2fs_sb_mounted_hmsmr(sbi->sb) && + current->plug && (type == DATA || type == NODE)) + blk_finish_plug(current->plug); + } submit_bio(bio); } @@ -118,7 +126,7 @@ static void __submit_merged_bio(struct f2fs_bio_info *io) bio_set_op_attrs(io->bio, fio->op, fio->op_flags); - __submit_bio(io->sbi, io->bio); + __submit_bio(io->sbi, io->bio, fio->type); io->bio = NULL; } @@ -240,7 +248,7 @@ int f2fs_submit_page_bio(struct f2fs_io_info *fio) bio->bi_rw = fio->op_flags; bio_set_op_attrs(bio, fio->op, fio->op_flags); - __submit_bio(fio->sbi, bio); + __submit_bio(fio->sbi, bio, fio->type); return 0; } @@ -326,7 +334,7 @@ int reserve_new_blocks(struct dnode_of_data *dn, blkcnt_t count) if (!count) return 0; - if (unlikely(is_inode_flag_set(F2FS_I(dn->inode), FI_NO_ALLOC))) + if (unlikely(is_inode_flag_set(dn->inode, FI_NO_ALLOC))) return -EPERM; if (unlikely(!inc_valid_block_count(sbi, dn->inode, &count))) return -ENOSPC; @@ -348,9 +356,6 @@ int reserve_new_blocks(struct dnode_of_data *dn, blkcnt_t count) if (set_page_dirty(dn->node_page)) dn->node_changed = true; - - mark_inode_dirty(dn->inode); - sync_inode_page(dn); return 0; } @@ -446,7 +451,8 @@ got_it: */ if (dn.data_blkaddr == NEW_ADDR) { zero_user_segment(page, 0, PAGE_SIZE); - SetPageUptodate(page); + if (!PageUptodate(page)) + SetPageUptodate(page); unlock_page(page); return page; } @@ -505,14 +511,14 @@ repeat: /* wait for read completion */ lock_page(page); - if (unlikely(!PageUptodate(page))) { - f2fs_put_page(page, 1); - return ERR_PTR(-EIO); - } if (unlikely(page->mapping != mapping)) { f2fs_put_page(page, 1); goto repeat; } + if (unlikely(!PageUptodate(page))) { + f2fs_put_page(page, 1); + return ERR_PTR(-EIO); + } return page; } @@ -557,7 +563,8 @@ struct page *get_new_data_page(struct inode *inode, if (dn.data_blkaddr == NEW_ADDR) { zero_user_segment(page, 0, PAGE_SIZE); - SetPageUptodate(page); + if (!PageUptodate(page)) + SetPageUptodate(page); } else { f2fs_put_page(page, 1); @@ -569,11 +576,8 @@ struct page *get_new_data_page(struct inode *inode, } got_it: if (new_i_size && i_size_read(inode) < - ((loff_t)(index + 1) << PAGE_SHIFT)) { - i_size_write(inode, ((loff_t)(index + 1) << PAGE_SHIFT)); - /* Only the directory inode sets new_i_size */ - set_inode_flag(F2FS_I(inode), FI_UPDATE_DIR); - } + ((loff_t)(index + 1) << PAGE_SHIFT)) + f2fs_i_size_write(inode, ((loff_t)(index + 1) << PAGE_SHIFT)); return page; } @@ -586,7 +590,7 @@ static int __allocate_data_block(struct dnode_of_data *dn) pgoff_t fofs; blkcnt_t count = 1; - if (unlikely(is_inode_flag_set(F2FS_I(dn->inode), FI_NO_ALLOC))) + if (unlikely(is_inode_flag_set(dn->inode, FI_NO_ALLOC))) return -EPERM; dn->data_blkaddr = datablock_addr(dn->node_page, dn->ofs_in_node); @@ -611,7 +615,7 @@ alloc: fofs = start_bidx_of_node(ofs_of_node(dn->node_page), dn->inode) + dn->ofs_in_node; if (i_size_read(dn->inode) < ((loff_t)(fofs + 1) << PAGE_SHIFT)) - i_size_write(dn->inode, + f2fs_i_size_write(dn->inode, ((loff_t)(fofs + 1) << PAGE_SHIFT)); return 0; } @@ -660,7 +664,7 @@ int f2fs_map_blocks(struct inode *inode, struct f2fs_map_blocks *map, unsigned int maxblocks = map->m_len; struct dnode_of_data dn; struct f2fs_sb_info *sbi = F2FS_I_SB(inode); - int mode = create ? ALLOC_NODE : LOOKUP_NODE_RA; + int mode = create ? ALLOC_NODE : LOOKUP_NODE; pgoff_t pgofs, end_offset, end; int err = 0, ofs = 1; unsigned int ofs_in_node, last_ofs_in_node; @@ -723,8 +727,7 @@ next_block: } else { err = __allocate_data_block(&dn); if (!err) { - set_inode_flag(F2FS_I(inode), - FI_APPEND_WRITE); + set_inode_flag(inode, FI_APPEND_WRITE); allocated = true; } } @@ -795,8 +798,6 @@ skip: else if (dn.ofs_in_node < end_offset) goto next_block; - if (allocated) - sync_inode_page(&dn); f2fs_put_dnode(&dn); if (create) { @@ -807,8 +808,6 @@ skip: goto next_dnode; sync_out: - if (allocated) - sync_inode_page(&dn); f2fs_put_dnode(&dn); unlock_out: if (create) { @@ -968,6 +967,37 @@ out: return ret; } +struct bio *f2fs_grab_bio(struct inode *inode, block_t blkaddr, + unsigned nr_pages) +{ + struct f2fs_sb_info *sbi = F2FS_I_SB(inode); + struct fscrypt_ctx *ctx = NULL; + struct block_device *bdev = sbi->sb->s_bdev; + struct bio *bio; + + if (f2fs_encrypted_inode(inode) && S_ISREG(inode->i_mode)) { + ctx = fscrypt_get_ctx(inode, GFP_NOFS); + if (IS_ERR(ctx)) + return ERR_CAST(ctx); + + /* wait the page to be moved by cleaning */ + f2fs_wait_on_encrypted_page_writeback(sbi, blkaddr); + } + + bio = bio_alloc(GFP_KERNEL, min_t(int, nr_pages, BIO_MAX_PAGES)); + if (!bio) { + if (ctx) + fscrypt_release_ctx(ctx); + return ERR_PTR(-ENOMEM); + } + bio->bi_bdev = bdev; + bio->bi_iter.bi_sector = SECTOR_FROM_BLOCK(blkaddr); + bio->bi_end_io = f2fs_read_end_io; + bio->bi_private = ctx; + + return bio; +} + /* * This function was originally taken from fs/mpage.c, and customized for f2fs. * Major change was from block_size == page_size in f2fs by default. @@ -986,7 +1016,6 @@ static int f2fs_mpage_readpages(struct address_space *mapping, sector_t last_block; sector_t last_block_in_file; sector_t block_nr; - struct block_device *bdev = inode->i_sb->s_bdev; struct f2fs_map_blocks map; map.m_pblk = 0; @@ -1002,7 +1031,8 @@ static int f2fs_mpage_readpages(struct address_space *mapping, page = list_entry(pages->prev, struct page, lru); list_del(&page->lru); if (add_to_page_cache_lru(page, mapping, - page->index, GFP_KERNEL)) + page->index, + readahead_gfp_mask(mapping))) goto next_page; } @@ -1046,7 +1076,8 @@ got_it: } } else { zero_user_segment(page, 0, PAGE_SIZE); - SetPageUptodate(page); + if (!PageUptodate(page)) + SetPageUptodate(page); unlock_page(page); goto next_page; } @@ -1057,35 +1088,15 @@ got_it: */ if (bio && (last_block_in_bio != block_nr - 1)) { submit_and_realloc: - __submit_bio(F2FS_I_SB(inode), bio); + __submit_bio(F2FS_I_SB(inode), bio, DATA); bio = NULL; } if (bio == NULL) { - struct fscrypt_ctx *ctx = NULL; - - if (f2fs_encrypted_inode(inode) && - S_ISREG(inode->i_mode)) { - - ctx = fscrypt_get_ctx(inode, GFP_NOFS); - if (IS_ERR(ctx)) - goto set_error_page; - - /* wait the page to be moved by cleaning */ - f2fs_wait_on_encrypted_page_writeback( - F2FS_I_SB(inode), block_nr); - } - - bio = bio_alloc(GFP_KERNEL, - min_t(int, nr_pages, BIO_MAX_PAGES)); - if (!bio) { - if (ctx) - fscrypt_release_ctx(ctx); + bio = f2fs_grab_bio(inode, block_nr, nr_pages); + if (IS_ERR(bio)) { + bio = NULL; goto set_error_page; } - bio->bi_bdev = bdev; - bio->bi_iter.bi_sector = SECTOR_FROM_BLOCK(block_nr); - bio->bi_end_io = f2fs_read_end_io; - bio->bi_private = ctx; bio_set_op_attrs(bio, REQ_OP_READ, 0); } @@ -1101,7 +1112,7 @@ set_error_page: goto next_page; confused: if (bio) { - __submit_bio(F2FS_I_SB(inode), bio); + __submit_bio(F2FS_I_SB(inode), bio, DATA); bio = NULL; } unlock_page(page); @@ -1111,7 +1122,7 @@ next_page: } BUG_ON(pages && !list_empty(pages)); if (bio) - __submit_bio(F2FS_I_SB(inode), bio); + __submit_bio(F2FS_I_SB(inode), bio, DATA); return 0; } @@ -1200,14 +1211,14 @@ retry_encrypt: !IS_ATOMIC_WRITTEN_PAGE(page) && need_inplace_update(inode))) { rewrite_data_page(fio); - set_inode_flag(F2FS_I(inode), FI_UPDATE_WRITE); + set_inode_flag(inode, FI_UPDATE_WRITE); trace_f2fs_do_write_data_page(page, IPU); } else { write_data_page(&dn, fio); trace_f2fs_do_write_data_page(page, OPU); - set_inode_flag(F2FS_I(inode), FI_APPEND_WRITE); + set_inode_flag(inode, FI_APPEND_WRITE); if (page->index == 0) - set_inode_flag(F2FS_I(inode), FI_FIRST_BLOCK_WRITTEN); + set_inode_flag(inode, FI_FIRST_BLOCK_WRITTEN); } out_writepage: f2fs_put_dnode(&dn); @@ -1222,6 +1233,7 @@ static int f2fs_write_data_page(struct page *page, loff_t i_size = i_size_read(inode); const pgoff_t end_index = ((unsigned long long) i_size) >> PAGE_SHIFT; + loff_t psize = (page->index + 1) << PAGE_SHIFT; unsigned offset = 0; bool need_balance_fs = false; int err = 0; @@ -1259,20 +1271,18 @@ write: available_free_memory(sbi, BASE_CHECK)))) goto redirty_out; + /* we should bypass data pages to proceed the kworkder jobs */ + if (unlikely(f2fs_cp_error(sbi))) { + mapping_set_error(page->mapping, -EIO); + goto out; + } + /* Dentry blocks are controlled by checkpoint */ if (S_ISDIR(inode->i_mode)) { - if (unlikely(f2fs_cp_error(sbi))) - goto redirty_out; err = do_write_data_page(&fio); goto done; } - /* we should bypass data pages to proceed the kworkder jobs */ - if (unlikely(f2fs_cp_error(sbi))) { - SetPageError(page); - goto out; - } - if (!wbc->for_reclaim) need_balance_fs = true; else if (has_not_enough_free_secs(sbi, 0)) @@ -1284,6 +1294,8 @@ write: err = f2fs_write_inline_data(inode, page); if (err == -EAGAIN) err = do_write_data_page(&fio); + if (F2FS_I(inode)->last_disk_size < psize) + F2FS_I(inode)->last_disk_size = psize; f2fs_unlock_op(sbi); done: if (err && err != -ENOENT) @@ -1310,16 +1322,8 @@ out: redirty_out: redirty_page_for_writepage(wbc, page); - return AOP_WRITEPAGE_ACTIVATE; -} - -static int __f2fs_writepage(struct page *page, struct writeback_control *wbc, - void *data) -{ - struct address_space *mapping = data; - int ret = mapping->a_ops->writepage(page, wbc); - mapping_set_error(mapping, ret); - return ret; + unlock_page(page); + return err; } /* @@ -1328,8 +1332,7 @@ static int __f2fs_writepage(struct page *page, struct writeback_control *wbc, * warm/hot data page. */ static int f2fs_write_cache_pages(struct address_space *mapping, - struct writeback_control *wbc, writepage_t writepage, - void *data) + struct writeback_control *wbc) { int ret = 0; int done = 0; @@ -1342,10 +1345,9 @@ static int f2fs_write_cache_pages(struct address_space *mapping, int cycled; int range_whole = 0; int tag; - int step = 0; pagevec_init(&pvec, 0); -next: + if (wbc->range_cyclic) { writeback_index = mapping->writeback_index; /* prev offset */ index = writeback_index; @@ -1400,9 +1402,6 @@ continue_unlock: goto continue_unlock; } - if (step == is_cold_data(page)) - goto continue_unlock; - if (PageWriteback(page)) { if (wbc->sync_mode != WB_SYNC_NONE) f2fs_wait_on_page_writeback(page, @@ -1415,16 +1414,11 @@ continue_unlock: if (!clear_page_dirty_for_io(page)) goto continue_unlock; - ret = (*writepage)(page, wbc, data); + ret = mapping->a_ops->writepage(page, wbc); if (unlikely(ret)) { - if (ret == AOP_WRITEPAGE_ACTIVATE) { - unlock_page(page); - ret = 0; - } else { - done_index = page->index + 1; - done = 1; - break; - } + done_index = page->index + 1; + done = 1; + break; } if (--wbc->nr_to_write <= 0 && @@ -1437,11 +1431,6 @@ continue_unlock: cond_resched(); } - if (step < 1) { - step++; - goto next; - } - if (!cycled && !done) { cycled = 1; index = 0; @@ -1459,9 +1448,8 @@ static int f2fs_write_data_pages(struct address_space *mapping, { struct inode *inode = mapping->host; struct f2fs_sb_info *sbi = F2FS_I_SB(inode); - bool locked = false; + struct blk_plug plug; int ret; - long diff; /* deal with chardevs and other special file */ if (!mapping->a_ops->writepage) @@ -1477,7 +1465,7 @@ static int f2fs_write_data_pages(struct address_space *mapping, goto skip_write; /* skip writing during file defragment */ - if (is_inode_flag_set(F2FS_I(inode), FI_DO_DEFRAG)) + if (is_inode_flag_set(inode, FI_DO_DEFRAG)) goto skip_write; /* during POR, we don't need to trigger writepage at all. */ @@ -1486,20 +1474,16 @@ static int f2fs_write_data_pages(struct address_space *mapping, trace_f2fs_writepages(mapping->host, wbc, DATA); - diff = nr_pages_to_write(sbi, DATA, wbc); - - if (!S_ISDIR(inode->i_mode) && wbc->sync_mode == WB_SYNC_ALL) { - mutex_lock(&sbi->writepages); - locked = true; - } - ret = f2fs_write_cache_pages(mapping, wbc, __f2fs_writepage, mapping); - f2fs_submit_merged_bio_cond(sbi, inode, NULL, 0, DATA, WRITE); - if (locked) - mutex_unlock(&sbi->writepages); + blk_start_plug(&plug); + ret = f2fs_write_cache_pages(mapping, wbc); + blk_finish_plug(&plug); + /* + * if some pages were truncated, we cannot guarantee its mapping->host + * to detect pending bios. + */ + f2fs_submit_merged_bio(sbi, DATA, WRITE); remove_dirty_inode(inode); - - wbc->nr_to_write = max((long)0, wbc->nr_to_write - diff); return ret; skip_write: @@ -1557,7 +1541,7 @@ restart: if (f2fs_has_inline_data(inode)) { if (pos + len <= MAX_INLINE_DATA) { read_inline_data(page, ipage); - set_inode_flag(F2FS_I(inode), FI_DATA_EXIST); + set_inode_flag(inode, FI_DATA_EXIST); if (inode->i_nlink) set_inline_node(ipage); } else { @@ -1667,39 +1651,35 @@ repeat: if (blkaddr == NEW_ADDR) { zero_user_segment(page, 0, PAGE_SIZE); } else { - struct f2fs_io_info fio = { - .sbi = sbi, - .type = DATA, - .op = REQ_OP_READ, - .op_flags = READ_SYNC, - .old_blkaddr = blkaddr, - .new_blkaddr = blkaddr, - .page = page, - .encrypted_page = NULL, - }; - err = f2fs_submit_page_bio(&fio); - if (err) - goto fail; + struct bio *bio; - lock_page(page); - if (unlikely(!PageUptodate(page))) { - err = -EIO; + bio = f2fs_grab_bio(inode, blkaddr, 1); + if (IS_ERR(bio)) { + err = PTR_ERR(bio); goto fail; } + bio_set_op_attrs(bio, REQ_OP_READ, READ_SYNC); + if (bio_add_page(bio, page, PAGE_SIZE, 0) < PAGE_SIZE) { + bio_put(bio); + err = -EFAULT; + goto fail; + } + + __submit_bio(sbi, bio, DATA); + + lock_page(page); if (unlikely(page->mapping != mapping)) { f2fs_put_page(page, 1); goto repeat; } - - /* avoid symlink page */ - if (f2fs_encrypted_inode(inode) && S_ISREG(inode->i_mode)) { - err = fscrypt_decrypt_page(page); - if (err) - goto fail; + if (unlikely(!PageUptodate(page))) { + err = -EIO; + goto fail; } } out_update: - SetPageUptodate(page); + if (!PageUptodate(page)) + SetPageUptodate(page); out_clear: clear_cold_data(page); return 0; @@ -1720,13 +1700,11 @@ static int f2fs_write_end(struct file *file, trace_f2fs_write_end(inode, pos, len, copied); set_page_dirty(page); + f2fs_put_page(page, 1); - if (pos + copied > i_size_read(inode)) { - i_size_write(inode, pos + copied); - mark_inode_dirty(inode); - } + if (pos + copied > i_size_read(inode)) + f2fs_i_size_write(inode, pos + copied); - f2fs_put_page(page, 1); f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); return copied; } @@ -1751,6 +1729,7 @@ static ssize_t f2fs_direct_IO(struct kiocb *iocb, struct iov_iter *iter) struct inode *inode = mapping->host; size_t count = iov_iter_count(iter); loff_t offset = iocb->ki_pos; + int rw = iov_iter_rw(iter); int err; err = check_direct_IO(inode, iter, offset); @@ -1759,18 +1738,23 @@ static ssize_t f2fs_direct_IO(struct kiocb *iocb, struct iov_iter *iter) if (f2fs_encrypted_inode(inode) && S_ISREG(inode->i_mode)) return 0; + if (test_opt(F2FS_I_SB(inode), LFS)) + return 0; - trace_f2fs_direct_IO_enter(inode, offset, count, iov_iter_rw(iter)); + trace_f2fs_direct_IO_enter(inode, offset, count, rw); + down_read(&F2FS_I(inode)->dio_rwsem[rw]); err = blockdev_direct_IO(iocb, inode, iter, get_data_block_dio); - if (iov_iter_rw(iter) == WRITE) { + up_read(&F2FS_I(inode)->dio_rwsem[rw]); + + if (rw == WRITE) { if (err > 0) - set_inode_flag(F2FS_I(inode), FI_UPDATE_WRITE); + set_inode_flag(inode, FI_UPDATE_WRITE); else if (err < 0) f2fs_write_failed(mapping, offset + count); } - trace_f2fs_direct_IO_exit(inode, offset, count, iov_iter_rw(iter), err); + trace_f2fs_direct_IO_exit(inode, offset, count, rw, err); return err; } @@ -1817,6 +1801,35 @@ int f2fs_release_page(struct page *page, gfp_t wait) return 1; } +/* + * This was copied from __set_page_dirty_buffers which gives higher performance + * in very high speed storages. (e.g., pmem) + */ +void f2fs_set_page_dirty_nobuffers(struct page *page) +{ + struct address_space *mapping = page->mapping; + unsigned long flags; + + if (unlikely(!mapping)) + return; + + spin_lock(&mapping->private_lock); + lock_page_memcg(page); + SetPageDirty(page); + spin_unlock(&mapping->private_lock); + + spin_lock_irqsave(&mapping->tree_lock, flags); + WARN_ON_ONCE(!PageUptodate(page)); + account_page_dirtied(page, mapping); + radix_tree_tag_set(&mapping->page_tree, + page_index(page), PAGECACHE_TAG_DIRTY); + spin_unlock_irqrestore(&mapping->tree_lock, flags); + unlock_page_memcg(page); + + __mark_inode_dirty(mapping->host, I_DIRTY_PAGES); + return; +} + static int f2fs_set_data_page_dirty(struct page *page) { struct address_space *mapping = page->mapping; @@ -1824,7 +1837,8 @@ static int f2fs_set_data_page_dirty(struct page *page) trace_f2fs_set_page_dirty(page, DATA); - SetPageUptodate(page); + if (!PageUptodate(page)) + SetPageUptodate(page); if (f2fs_is_atomic_file(inode)) { if (!IS_ATOMIC_WRITTEN_PAGE(page)) { @@ -1839,7 +1853,7 @@ static int f2fs_set_data_page_dirty(struct page *page) } if (!PageDirty(page)) { - __set_page_dirty_nobuffers(page); + f2fs_set_page_dirty_nobuffers(page); update_dirty_page(inode, page); return 1; } diff --git a/fs/f2fs/debug.c b/fs/f2fs/debug.c index d89a425055d0..badd407bb622 100644 --- a/fs/f2fs/debug.c +++ b/fs/f2fs/debug.c @@ -47,6 +47,7 @@ static void update_general_status(struct f2fs_sb_info *sbi) si->ndirty_data = get_pages(sbi, F2FS_DIRTY_DATA); si->ndirty_dirs = sbi->ndirty_inode[DIR_INODE]; si->ndirty_files = sbi->ndirty_inode[FILE_INODE]; + si->ndirty_all = sbi->ndirty_inode[DIRTY_META]; si->inmem_pages = get_pages(sbi, F2FS_INMEM_PAGES); si->wb_bios = atomic_read(&sbi->nr_wb_bios); si->total_count = (int)sbi->user_block_count / sbi->blocks_per_seg; @@ -304,8 +305,8 @@ static int stat_show(struct seq_file *s, void *v) si->inmem_pages, si->wb_bios); seq_printf(s, " - nodes: %4lld in %4d\n", si->ndirty_node, si->node_pages); - seq_printf(s, " - dents: %4lld in dirs:%4d\n", - si->ndirty_dent, si->ndirty_dirs); + seq_printf(s, " - dents: %4lld in dirs:%4d (%4d)\n", + si->ndirty_dent, si->ndirty_dirs, si->ndirty_all); seq_printf(s, " - datas: %4lld in files:%4d\n", si->ndirty_data, si->ndirty_files); seq_printf(s, " - meta: %4lld in %4d\n", diff --git a/fs/f2fs/dir.c b/fs/f2fs/dir.c index f9313f684540..a485f68a76b1 100644 --- a/fs/f2fs/dir.c +++ b/fs/f2fs/dir.c @@ -185,8 +185,13 @@ static struct f2fs_dir_entry *find_in_level(struct inode *dir, /* no need to allocate new dentry pages to all the indices */ dentry_page = find_data_page(dir, bidx); if (IS_ERR(dentry_page)) { - room = true; - continue; + if (PTR_ERR(dentry_page) == -ENOENT) { + room = true; + continue; + } else { + *res_page = dentry_page; + break; + } } de = find_in_block(dentry_page, fname, namehash, &max_slots, @@ -223,19 +228,22 @@ struct f2fs_dir_entry *f2fs_find_entry(struct inode *dir, struct fscrypt_name fname; int err; - *res_page = NULL; - err = fscrypt_setup_filename(dir, child, 1, &fname); - if (err) + if (err) { + *res_page = ERR_PTR(err); return NULL; + } if (f2fs_has_inline_dentry(dir)) { + *res_page = NULL; de = find_in_inline_dir(dir, &fname, res_page); goto out; } - if (npages == 0) + if (npages == 0) { + *res_page = NULL; goto out; + } max_depth = F2FS_I(dir)->i_current_depth; if (unlikely(max_depth > MAX_DIR_HASH_DEPTH)) { @@ -243,13 +251,13 @@ struct f2fs_dir_entry *f2fs_find_entry(struct inode *dir, "Corrupted max_depth of %lu: %u", dir->i_ino, max_depth); max_depth = MAX_DIR_HASH_DEPTH; - F2FS_I(dir)->i_current_depth = max_depth; - mark_inode_dirty(dir); + f2fs_i_depth_write(dir, max_depth); } for (level = 0; level < max_depth; level++) { + *res_page = NULL; de = find_in_level(dir, level, &fname, res_page); - if (de) + if (de || IS_ERR(*res_page)) break; } out: @@ -259,35 +267,22 @@ out: struct f2fs_dir_entry *f2fs_parent_dir(struct inode *dir, struct page **p) { - struct page *page; - struct f2fs_dir_entry *de; - struct f2fs_dentry_block *dentry_blk; - - if (f2fs_has_inline_dentry(dir)) - return f2fs_parent_inline_dir(dir, p); - - page = get_lock_data_page(dir, 0, false); - if (IS_ERR(page)) - return NULL; + struct qstr dotdot = QSTR_INIT("..", 2); - dentry_blk = kmap(page); - de = &dentry_blk->dentry[1]; - *p = page; - unlock_page(page); - return de; + return f2fs_find_entry(dir, &dotdot, p); } -ino_t f2fs_inode_by_name(struct inode *dir, struct qstr *qstr) +ino_t f2fs_inode_by_name(struct inode *dir, struct qstr *qstr, + struct page **page) { ino_t res = 0; struct f2fs_dir_entry *de; - struct page *page; - de = f2fs_find_entry(dir, qstr, &page); + de = f2fs_find_entry(dir, qstr, page); if (de) { res = le32_to_cpu(de->ino); - f2fs_dentry_kunmap(dir, page); - f2fs_put_page(page, 0); + f2fs_dentry_kunmap(dir, *page); + f2fs_put_page(*page, 0); } return res; @@ -303,9 +298,9 @@ void f2fs_set_link(struct inode *dir, struct f2fs_dir_entry *de, set_de_type(de, inode->i_mode); f2fs_dentry_kunmap(dir, page); set_page_dirty(page); - dir->i_mtime = dir->i_ctime = CURRENT_TIME; - mark_inode_dirty(dir); + dir->i_mtime = dir->i_ctime = CURRENT_TIME; + f2fs_mark_inode_dirty_sync(dir); f2fs_put_page(page, 1); } @@ -385,7 +380,7 @@ struct page *init_inode_metadata(struct inode *inode, struct inode *dir, struct page *page; int err; - if (is_inode_flag_set(F2FS_I(inode), FI_NEW_INODE)) { + if (is_inode_flag_set(inode, FI_NEW_INODE)) { page = new_inode_page(inode); if (IS_ERR(page)) return page; @@ -429,7 +424,7 @@ struct page *init_inode_metadata(struct inode *inode, struct inode *dir, * This file should be checkpointed during fsync. * We lost i_pino from now on. */ - if (is_inode_flag_set(F2FS_I(inode), FI_INC_LINK)) { + if (is_inode_flag_set(inode, FI_INC_LINK)) { file_lost_pino(inode); /* * If link the tmpfile to alias through linkat path, @@ -437,14 +432,11 @@ struct page *init_inode_metadata(struct inode *inode, struct inode *dir, */ if (inode->i_nlink == 0) remove_orphan_inode(F2FS_I_SB(dir), inode->i_ino); - inc_nlink(inode); + f2fs_i_links_write(inode, true); } return page; put_error: - /* truncate empty dir pages */ - truncate_inode_pages(&inode->i_data, 0); - clear_nlink(inode); update_inode(inode, page); f2fs_put_page(page, 1); @@ -454,23 +446,19 @@ put_error: void update_parent_metadata(struct inode *dir, struct inode *inode, unsigned int current_depth) { - if (inode && is_inode_flag_set(F2FS_I(inode), FI_NEW_INODE)) { - if (S_ISDIR(inode->i_mode)) { - inc_nlink(dir); - set_inode_flag(F2FS_I(dir), FI_UPDATE_DIR); - } - clear_inode_flag(F2FS_I(inode), FI_NEW_INODE); + if (inode && is_inode_flag_set(inode, FI_NEW_INODE)) { + if (S_ISDIR(inode->i_mode)) + f2fs_i_links_write(dir, true); + clear_inode_flag(inode, FI_NEW_INODE); } dir->i_mtime = dir->i_ctime = CURRENT_TIME; - mark_inode_dirty(dir); + f2fs_mark_inode_dirty_sync(dir); - if (F2FS_I(dir)->i_current_depth != current_depth) { - F2FS_I(dir)->i_current_depth = current_depth; - set_inode_flag(F2FS_I(dir), FI_UPDATE_DIR); - } + if (F2FS_I(dir)->i_current_depth != current_depth) + f2fs_i_depth_write(dir, current_depth); - if (inode && is_inode_flag_set(F2FS_I(inode), FI_INC_LINK)) - clear_inode_flag(F2FS_I(inode), FI_INC_LINK); + if (inode && is_inode_flag_set(inode, FI_INC_LINK)) + clear_inode_flag(inode, FI_INC_LINK); } int room_for_filename(const void *bitmap, int slots, int max_slots) @@ -596,9 +584,7 @@ add_dentry: set_page_dirty(dentry_page); if (inode) { - /* we don't need to mark_inode_dirty now */ - F2FS_I(inode)->i_pino = dir->i_ino; - update_inode(inode, page); + f2fs_i_pino_write(inode, dir->i_ino); f2fs_put_page(page, 1); } @@ -607,10 +593,6 @@ fail: if (inode) up_write(&F2FS_I(inode)->i_sem); - if (is_inode_flag_set(F2FS_I(dir), FI_UPDATE_DIR)) { - update_inode_page(dir); - clear_inode_flag(F2FS_I(dir), FI_UPDATE_DIR); - } kunmap(dentry_page); f2fs_put_page(dentry_page, 1); @@ -657,42 +639,34 @@ int f2fs_do_tmpfile(struct inode *inode, struct inode *dir) err = PTR_ERR(page); goto fail; } - /* we don't need to mark_inode_dirty now */ - update_inode(inode, page); f2fs_put_page(page, 1); - clear_inode_flag(F2FS_I(inode), FI_NEW_INODE); + clear_inode_flag(inode, FI_NEW_INODE); fail: up_write(&F2FS_I(inode)->i_sem); f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); return err; } -void f2fs_drop_nlink(struct inode *dir, struct inode *inode, struct page *page) +void f2fs_drop_nlink(struct inode *dir, struct inode *inode) { struct f2fs_sb_info *sbi = F2FS_I_SB(dir); down_write(&F2FS_I(inode)->i_sem); - if (S_ISDIR(inode->i_mode)) { - drop_nlink(dir); - if (page) - update_inode(dir, page); - else - update_inode_page(dir); - } + if (S_ISDIR(inode->i_mode)) + f2fs_i_links_write(dir, false); inode->i_ctime = CURRENT_TIME; - drop_nlink(inode); + f2fs_i_links_write(inode, false); if (S_ISDIR(inode->i_mode)) { - drop_nlink(inode); - i_size_write(inode, 0); + f2fs_i_links_write(inode, false); + f2fs_i_size_write(inode, 0); } up_write(&F2FS_I(inode)->i_sem); - update_inode_page(inode); if (inode->i_nlink == 0) - add_orphan_inode(sbi, inode->i_ino); + add_orphan_inode(inode); else release_orphan_inode(sbi); } @@ -730,9 +704,10 @@ void f2fs_delete_entry(struct f2fs_dir_entry *dentry, struct page *page, set_page_dirty(page); dir->i_ctime = dir->i_mtime = CURRENT_TIME; + f2fs_mark_inode_dirty_sync(dir); if (inode) - f2fs_drop_nlink(dir, inode, NULL); + f2fs_drop_nlink(dir, inode); if (bit_pos == NR_DENTRY_IN_BLOCK && !truncate_hole(dir, page->index, page->index + 1)) { diff --git a/fs/f2fs/extent_cache.c b/fs/f2fs/extent_cache.c index 5bfcdb9b69f2..2b06d4fcd954 100644 --- a/fs/f2fs/extent_cache.c +++ b/fs/f2fs/extent_cache.c @@ -170,8 +170,10 @@ static void __drop_largest_extent(struct inode *inode, { struct extent_info *largest = &F2FS_I(inode)->extent_tree->largest; - if (fofs < largest->fofs + largest->len && fofs + len > largest->fofs) + if (fofs < largest->fofs + largest->len && fofs + len > largest->fofs) { largest->len = 0; + f2fs_mark_inode_dirty_sync(inode); + } } /* return true, if inode page is changed */ @@ -335,11 +337,12 @@ lookup_neighbors: return en; } -static struct extent_node *__try_merge_extent_node(struct f2fs_sb_info *sbi, +static struct extent_node *__try_merge_extent_node(struct inode *inode, struct extent_tree *et, struct extent_info *ei, struct extent_node *prev_ex, struct extent_node *next_ex) { + struct f2fs_sb_info *sbi = F2FS_I_SB(inode); struct extent_node *en = NULL; if (prev_ex && __is_back_mergeable(ei, &prev_ex->ei)) { @@ -360,7 +363,7 @@ static struct extent_node *__try_merge_extent_node(struct f2fs_sb_info *sbi, if (!en) return NULL; - __try_update_largest_extent(et, en); + __try_update_largest_extent(inode, et, en); spin_lock(&sbi->extent_lock); if (!list_empty(&en->list)) { @@ -371,11 +374,12 @@ static struct extent_node *__try_merge_extent_node(struct f2fs_sb_info *sbi, return en; } -static struct extent_node *__insert_extent_tree(struct f2fs_sb_info *sbi, +static struct extent_node *__insert_extent_tree(struct inode *inode, struct extent_tree *et, struct extent_info *ei, struct rb_node **insert_p, struct rb_node *insert_parent) { + struct f2fs_sb_info *sbi = F2FS_I_SB(inode); struct rb_node **p = &et->root.rb_node; struct rb_node *parent = NULL; struct extent_node *en = NULL; @@ -402,7 +406,7 @@ do_insert: if (!en) return NULL; - __try_update_largest_extent(et, en); + __try_update_largest_extent(inode, et, en); /* update in global extent list */ spin_lock(&sbi->extent_lock); @@ -431,7 +435,7 @@ static unsigned int f2fs_update_extent_tree_range(struct inode *inode, write_lock(&et->lock); - if (is_inode_flag_set(F2FS_I(inode), FI_NO_EXTENT)) { + if (is_inode_flag_set(inode, FI_NO_EXTENT)) { write_unlock(&et->lock); return false; } @@ -473,7 +477,7 @@ static unsigned int f2fs_update_extent_tree_range(struct inode *inode, set_extent_info(&ei, end, end - dei.fofs + dei.blk, org_end - end); - en1 = __insert_extent_tree(sbi, et, &ei, + en1 = __insert_extent_tree(inode, et, &ei, NULL, NULL); next_en = en1; } else { @@ -494,7 +498,7 @@ static unsigned int f2fs_update_extent_tree_range(struct inode *inode, } if (parts) - __try_update_largest_extent(et, en); + __try_update_largest_extent(inode, et, en); else __release_extent_node(sbi, et, en); @@ -514,20 +518,20 @@ static unsigned int f2fs_update_extent_tree_range(struct inode *inode, if (blkaddr) { set_extent_info(&ei, fofs, blkaddr, len); - if (!__try_merge_extent_node(sbi, et, &ei, prev_en, next_en)) - __insert_extent_tree(sbi, et, &ei, + if (!__try_merge_extent_node(inode, et, &ei, prev_en, next_en)) + __insert_extent_tree(inode, et, &ei, insert_p, insert_parent); /* give up extent_cache, if split and small updates happen */ if (dei.len >= 1 && prev.len < F2FS_MIN_EXTENT_LEN && et->largest.len < F2FS_MIN_EXTENT_LEN) { - et->largest.len = 0; - set_inode_flag(F2FS_I(inode), FI_NO_EXTENT); + __drop_largest_extent(inode, 0, UINT_MAX); + set_inode_flag(inode, FI_NO_EXTENT); } } - if (is_inode_flag_set(F2FS_I(inode), FI_NO_EXTENT)) + if (is_inode_flag_set(inode, FI_NO_EXTENT)) __free_extent_tree(sbi, et); write_unlock(&et->lock); @@ -627,6 +631,19 @@ unsigned int f2fs_destroy_extent_node(struct inode *inode) return node_cnt; } +void f2fs_drop_extent_tree(struct inode *inode) +{ + struct f2fs_sb_info *sbi = F2FS_I_SB(inode); + struct extent_tree *et = F2FS_I(inode)->extent_tree; + + set_inode_flag(inode, FI_NO_EXTENT); + + write_lock(&et->lock); + __free_extent_tree(sbi, et); + __drop_largest_extent(inode, 0, UINT_MAX); + write_unlock(&et->lock); +} + void f2fs_destroy_extent_tree(struct inode *inode) { struct f2fs_sb_info *sbi = F2FS_I_SB(inode); @@ -685,9 +702,7 @@ void f2fs_update_extent_cache(struct dnode_of_data *dn) fofs = start_bidx_of_node(ofs_of_node(dn->node_page), dn->inode) + dn->ofs_in_node; - - if (f2fs_update_extent_tree_range(dn->inode, fofs, blkaddr, 1)) - sync_inode_page(dn); + f2fs_update_extent_tree_range(dn->inode, fofs, blkaddr, 1); } void f2fs_update_extent_cache_range(struct dnode_of_data *dn, @@ -697,8 +712,7 @@ void f2fs_update_extent_cache_range(struct dnode_of_data *dn, if (!f2fs_may_extent_tree(dn->inode)) return; - if (f2fs_update_extent_tree_range(dn->inode, fofs, blkaddr, len)) - sync_inode_page(dn); + f2fs_update_extent_tree_range(dn->inode, fofs, blkaddr, len); } void init_extent_cache_info(struct f2fs_sb_info *sbi) diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h index 23ae6a81ccd6..7890e9071499 100644 --- a/fs/f2fs/f2fs.h +++ b/fs/f2fs/f2fs.h @@ -45,6 +45,7 @@ enum { FAULT_ORPHAN, FAULT_BLOCK, FAULT_DIR_DEPTH, + FAULT_EVICT_INODE, FAULT_MAX, }; @@ -74,6 +75,8 @@ static inline bool time_to_inject(int type) return false; else if (type == FAULT_DIR_DEPTH && !IS_FAULT_SET(type)) return false; + else if (type == FAULT_EVICT_INODE && !IS_FAULT_SET(type)) + return false; atomic_inc(&f2fs_fault.inject_ops); if (atomic_read(&f2fs_fault.inject_ops) >= f2fs_fault.inject_rate) { @@ -108,6 +111,8 @@ static inline bool time_to_inject(int type) #define F2FS_MOUNT_FORCE_FG_GC 0x00004000 #define F2FS_MOUNT_DATA_FLUSH 0x00008000 #define F2FS_MOUNT_FAULT_INJECTION 0x00010000 +#define F2FS_MOUNT_ADAPTIVE 0x00020000 +#define F2FS_MOUNT_LFS 0x00040000 #define clear_opt(sbi, option) (sbi->mount_opt.opt &= ~F2FS_MOUNT_##option) #define set_opt(sbi, option) (sbi->mount_opt.opt |= F2FS_MOUNT_##option) @@ -128,6 +133,7 @@ struct f2fs_mount_info { }; #define F2FS_FEATURE_ENCRYPT 0x0001 +#define F2FS_FEATURE_HMSMR 0x0002 #define F2FS_HAS_FEATURE(sb, mask) \ ((F2FS_SB(sb)->raw_super->feature & cpu_to_le32(mask)) != 0) @@ -158,7 +164,7 @@ enum { #define BATCHED_TRIM_BLOCKS(sbi) \ (BATCHED_TRIM_SEGMENTS(sbi) << (sbi)->log_blocks_per_seg) #define DEF_CP_INTERVAL 60 /* 60 secs */ -#define DEF_IDLE_INTERVAL 120 /* 2 mins */ +#define DEF_IDLE_INTERVAL 5 /* 5 secs */ struct cp_control { int reason; @@ -262,6 +268,8 @@ static inline bool __has_cursum_space(struct f2fs_journal *journal, #define F2FS_IOC_GARBAGE_COLLECT _IO(F2FS_IOCTL_MAGIC, 6) #define F2FS_IOC_WRITE_CHECKPOINT _IO(F2FS_IOCTL_MAGIC, 7) #define F2FS_IOC_DEFRAGMENT _IO(F2FS_IOCTL_MAGIC, 8) +#define F2FS_IOC_MOVE_RANGE _IOWR(F2FS_IOCTL_MAGIC, 9, \ + struct f2fs_move_range) #define F2FS_IOC_SET_ENCRYPTION_POLICY FS_IOC_SET_ENCRYPTION_POLICY #define F2FS_IOC_GET_ENCRYPTION_POLICY FS_IOC_GET_ENCRYPTION_POLICY @@ -291,6 +299,13 @@ struct f2fs_defragment { u64 len; }; +struct f2fs_move_range { + u32 dst_fd; /* destination fd */ + u64 pos_in; /* start position in src_fd */ + u64 pos_out; /* start position in dst_fd */ + u64 len; /* size to move */ +}; + /* * For INODE and NODE manager */ @@ -441,11 +456,14 @@ struct f2fs_inode_info { unsigned int clevel; /* maximum level of given file name */ nid_t i_xattr_nid; /* node id that contains xattrs */ unsigned long long xattr_ver; /* cp version of xattr modification */ + loff_t last_disk_size; /* lastly written file size */ - struct list_head dirty_list; /* linked in global dirty list */ + struct list_head dirty_list; /* dirty list for dirs and files */ + struct list_head gdirty_list; /* linked in global dirty list */ struct list_head inmem_pages; /* inmemory pages managed by f2fs */ struct mutex inmem_lock; /* lock for inmemory pages */ struct extent_tree *extent_tree; /* cached extent_tree entry */ + struct rw_semaphore dio_rwsem[2];/* avoid racing between dio and gc */ }; static inline void get_extent_info(struct extent_info *ext, @@ -498,11 +516,14 @@ static inline bool __is_front_mergeable(struct extent_info *cur, return __is_extent_mergeable(cur, front); } -static inline void __try_update_largest_extent(struct extent_tree *et, - struct extent_node *en) +extern void f2fs_mark_inode_dirty_sync(struct inode *); +static inline void __try_update_largest_extent(struct inode *inode, + struct extent_tree *et, struct extent_node *en) { - if (en->ei.len > et->largest.len) + if (en->ei.len > et->largest.len) { et->largest = en->ei; + f2fs_mark_inode_dirty_sync(inode); + } } struct f2fs_nm_info { @@ -517,7 +538,7 @@ struct f2fs_nm_info { /* NAT cache management */ struct radix_tree_root nat_root;/* root of the nat entry cache */ struct radix_tree_root nat_set_root;/* root of the nat set cache */ - struct rw_semaphore nat_tree_lock; /* protect nat_tree_lock */ + struct percpu_rw_semaphore nat_tree_lock; /* protect nat_tree_lock */ struct list_head nat_entries; /* cached nat entry list (clean) */ unsigned int nat_cnt; /* the # of cached nat entries */ unsigned int dirty_nat_cnt; /* total num of nat entries in set */ @@ -599,6 +620,7 @@ struct flush_cmd { struct flush_cmd_control { struct task_struct *f2fs_issue_flush; /* flush thread */ wait_queue_head_t flush_wait_queue; /* waiting queue for wake-up */ + atomic_t submit_flush; /* # of issued flushes */ struct llist_head issue_list; /* list for command issue */ struct llist_node *dispatch_list; /* list for command dispatch */ }; @@ -655,6 +677,7 @@ enum count_type { F2FS_DIRTY_NODES, F2FS_DIRTY_META, F2FS_INMEM_PAGES, + F2FS_DIRTY_IMETA, NR_COUNT_TYPE, }; @@ -706,6 +729,7 @@ struct f2fs_bio_info { enum inode_type { DIR_INODE, /* for dirty dir inode */ FILE_INODE, /* for dirty regular/symlink inode */ + DIRTY_META, /* for all dirtied inode metadata */ NR_INODE_TYPE, }; @@ -757,14 +781,14 @@ struct f2fs_sb_info { /* for bio operations */ struct f2fs_bio_info read_io; /* for read bios */ struct f2fs_bio_info write_io[NR_PAGE_TYPE]; /* for write bios */ + struct mutex wio_mutex[NODE + 1]; /* bio ordering for NODE/DATA */ /* for checkpoint */ struct f2fs_checkpoint *ckpt; /* raw checkpoint pointer */ struct inode *meta_inode; /* cache meta blocks */ struct mutex cp_mutex; /* checkpoint procedure lock */ - struct rw_semaphore cp_rwsem; /* blocking FS operations */ + struct percpu_rw_semaphore cp_rwsem; /* blocking FS operations */ struct rw_semaphore node_write; /* locking node writes */ - struct mutex writepages; /* mutex for writepages() */ wait_queue_head_t cp_wait; unsigned long last_time[MAX_TIME]; /* to store time in jiffies */ long interval_time[MAX_TIME]; /* to store thresholds */ @@ -1050,22 +1074,22 @@ static inline void clear_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f) static inline void f2fs_lock_op(struct f2fs_sb_info *sbi) { - down_read(&sbi->cp_rwsem); + percpu_down_read(&sbi->cp_rwsem); } static inline void f2fs_unlock_op(struct f2fs_sb_info *sbi) { - up_read(&sbi->cp_rwsem); + percpu_up_read(&sbi->cp_rwsem); } static inline void f2fs_lock_all(struct f2fs_sb_info *sbi) { - down_write(&sbi->cp_rwsem); + percpu_down_write(&sbi->cp_rwsem); } static inline void f2fs_unlock_all(struct f2fs_sb_info *sbi) { - up_write(&sbi->cp_rwsem); + percpu_up_write(&sbi->cp_rwsem); } static inline int __get_cp_reason(struct f2fs_sb_info *sbi) @@ -1120,34 +1144,37 @@ static inline bool f2fs_has_xattr_block(unsigned int ofs) return ofs == XATTR_NODE_OFFSET; } +static inline void f2fs_i_blocks_write(struct inode *, blkcnt_t, bool); static inline bool inc_valid_block_count(struct f2fs_sb_info *sbi, struct inode *inode, blkcnt_t *count) { - block_t valid_block_count; + blkcnt_t diff; - spin_lock(&sbi->stat_lock); #ifdef CONFIG_F2FS_FAULT_INJECTION - if (time_to_inject(FAULT_BLOCK)) { - spin_unlock(&sbi->stat_lock); + if (time_to_inject(FAULT_BLOCK)) return false; - } #endif - valid_block_count = - sbi->total_valid_block_count + (block_t)(*count); - if (unlikely(valid_block_count > sbi->user_block_count)) { - *count = sbi->user_block_count - sbi->total_valid_block_count; + /* + * let's increase this in prior to actual block count change in order + * for f2fs_sync_file to avoid data races when deciding checkpoint. + */ + percpu_counter_add(&sbi->alloc_valid_block_count, (*count)); + + spin_lock(&sbi->stat_lock); + sbi->total_valid_block_count += (block_t)(*count); + if (unlikely(sbi->total_valid_block_count > sbi->user_block_count)) { + diff = sbi->total_valid_block_count - sbi->user_block_count; + *count -= diff; + sbi->total_valid_block_count = sbi->user_block_count; if (!*count) { spin_unlock(&sbi->stat_lock); + percpu_counter_sub(&sbi->alloc_valid_block_count, diff); return false; } } - /* *count can be recalculated */ - inode->i_blocks += *count; - sbi->total_valid_block_count = - sbi->total_valid_block_count + (block_t)(*count); spin_unlock(&sbi->stat_lock); - percpu_counter_add(&sbi->alloc_valid_block_count, (*count)); + f2fs_i_blocks_write(inode, *count, true); return true; } @@ -1158,9 +1185,9 @@ static inline void dec_valid_block_count(struct f2fs_sb_info *sbi, spin_lock(&sbi->stat_lock); f2fs_bug_on(sbi, sbi->total_valid_block_count < (block_t) count); f2fs_bug_on(sbi, inode->i_blocks < count); - inode->i_blocks -= count; sbi->total_valid_block_count -= (block_t)count; spin_unlock(&sbi->stat_lock); + f2fs_i_blocks_write(inode, count, false); } static inline void inc_page_count(struct f2fs_sb_info *sbi, int count_type) @@ -1295,7 +1322,7 @@ static inline bool inc_valid_node_count(struct f2fs_sb_info *sbi, } if (inode) - inode->i_blocks++; + f2fs_i_blocks_write(inode, 1, true); sbi->total_valid_node_count++; sbi->total_valid_block_count++; @@ -1314,7 +1341,7 @@ static inline void dec_valid_node_count(struct f2fs_sb_info *sbi, f2fs_bug_on(sbi, !sbi->total_valid_node_count); f2fs_bug_on(sbi, !inode->i_blocks); - inode->i_blocks--; + f2fs_i_blocks_write(inode, 1, false); sbi->total_valid_node_count--; sbi->total_valid_block_count--; @@ -1511,12 +1538,12 @@ static inline void f2fs_change_bit(unsigned int nr, char *addr) enum { FI_NEW_INODE, /* indicate newly allocated inode */ FI_DIRTY_INODE, /* indicate inode is dirty or not */ + FI_AUTO_RECOVER, /* indicate inode is recoverable */ FI_DIRTY_DIR, /* indicate directory has dirty pages */ FI_INC_LINK, /* need to increment i_nlink */ FI_ACL_MODE, /* indicate acl mode */ FI_NO_ALLOC, /* should not allocate any blocks */ FI_FREE_NID, /* free allocated nide */ - FI_UPDATE_DIR, /* should update inode block for consistency */ FI_NO_EXTENT, /* not to use the extent cache */ FI_INLINE_XATTR, /* used for inline xattr */ FI_INLINE_DATA, /* used for inline data*/ @@ -1534,64 +1561,143 @@ enum { FI_DIRTY_FILE, /* indicate regular/symlink has dirty pages */ }; -static inline void set_inode_flag(struct f2fs_inode_info *fi, int flag) +static inline void __mark_inode_dirty_flag(struct inode *inode, + int flag, bool set) +{ + switch (flag) { + case FI_INLINE_XATTR: + case FI_INLINE_DATA: + case FI_INLINE_DENTRY: + if (set) + return; + case FI_DATA_EXIST: + case FI_INLINE_DOTS: + f2fs_mark_inode_dirty_sync(inode); + } +} + +static inline void set_inode_flag(struct inode *inode, int flag) +{ + if (!test_bit(flag, &F2FS_I(inode)->flags)) + set_bit(flag, &F2FS_I(inode)->flags); + __mark_inode_dirty_flag(inode, flag, true); +} + +static inline int is_inode_flag_set(struct inode *inode, int flag) +{ + return test_bit(flag, &F2FS_I(inode)->flags); +} + +static inline void clear_inode_flag(struct inode *inode, int flag) +{ + if (test_bit(flag, &F2FS_I(inode)->flags)) + clear_bit(flag, &F2FS_I(inode)->flags); + __mark_inode_dirty_flag(inode, flag, false); +} + +static inline void set_acl_inode(struct inode *inode, umode_t mode) { - if (!test_bit(flag, &fi->flags)) - set_bit(flag, &fi->flags); + F2FS_I(inode)->i_acl_mode = mode; + set_inode_flag(inode, FI_ACL_MODE); + f2fs_mark_inode_dirty_sync(inode); } -static inline int is_inode_flag_set(struct f2fs_inode_info *fi, int flag) +static inline void f2fs_i_links_write(struct inode *inode, bool inc) { - return test_bit(flag, &fi->flags); + if (inc) + inc_nlink(inode); + else + drop_nlink(inode); + f2fs_mark_inode_dirty_sync(inode); +} + +static inline void f2fs_i_blocks_write(struct inode *inode, + blkcnt_t diff, bool add) +{ + bool clean = !is_inode_flag_set(inode, FI_DIRTY_INODE); + bool recover = is_inode_flag_set(inode, FI_AUTO_RECOVER); + + inode->i_blocks = add ? inode->i_blocks + diff : + inode->i_blocks - diff; + f2fs_mark_inode_dirty_sync(inode); + if (clean || recover) + set_inode_flag(inode, FI_AUTO_RECOVER); +} + +static inline void f2fs_i_size_write(struct inode *inode, loff_t i_size) +{ + bool clean = !is_inode_flag_set(inode, FI_DIRTY_INODE); + bool recover = is_inode_flag_set(inode, FI_AUTO_RECOVER); + + if (i_size_read(inode) == i_size) + return; + + i_size_write(inode, i_size); + f2fs_mark_inode_dirty_sync(inode); + if (clean || recover) + set_inode_flag(inode, FI_AUTO_RECOVER); } -static inline void clear_inode_flag(struct f2fs_inode_info *fi, int flag) +static inline bool f2fs_skip_inode_update(struct inode *inode) { - if (test_bit(flag, &fi->flags)) - clear_bit(flag, &fi->flags); + if (!is_inode_flag_set(inode, FI_AUTO_RECOVER)) + return false; + return F2FS_I(inode)->last_disk_size == i_size_read(inode); } -static inline void set_acl_inode(struct f2fs_inode_info *fi, umode_t mode) +static inline void f2fs_i_depth_write(struct inode *inode, unsigned int depth) { - fi->i_acl_mode = mode; - set_inode_flag(fi, FI_ACL_MODE); + F2FS_I(inode)->i_current_depth = depth; + f2fs_mark_inode_dirty_sync(inode); } -static inline void get_inline_info(struct f2fs_inode_info *fi, - struct f2fs_inode *ri) +static inline void f2fs_i_xnid_write(struct inode *inode, nid_t xnid) { + F2FS_I(inode)->i_xattr_nid = xnid; + f2fs_mark_inode_dirty_sync(inode); +} + +static inline void f2fs_i_pino_write(struct inode *inode, nid_t pino) +{ + F2FS_I(inode)->i_pino = pino; + f2fs_mark_inode_dirty_sync(inode); +} + +static inline void get_inline_info(struct inode *inode, struct f2fs_inode *ri) +{ + struct f2fs_inode_info *fi = F2FS_I(inode); + if (ri->i_inline & F2FS_INLINE_XATTR) - set_inode_flag(fi, FI_INLINE_XATTR); + set_bit(FI_INLINE_XATTR, &fi->flags); if (ri->i_inline & F2FS_INLINE_DATA) - set_inode_flag(fi, FI_INLINE_DATA); + set_bit(FI_INLINE_DATA, &fi->flags); if (ri->i_inline & F2FS_INLINE_DENTRY) - set_inode_flag(fi, FI_INLINE_DENTRY); + set_bit(FI_INLINE_DENTRY, &fi->flags); if (ri->i_inline & F2FS_DATA_EXIST) - set_inode_flag(fi, FI_DATA_EXIST); + set_bit(FI_DATA_EXIST, &fi->flags); if (ri->i_inline & F2FS_INLINE_DOTS) - set_inode_flag(fi, FI_INLINE_DOTS); + set_bit(FI_INLINE_DOTS, &fi->flags); } -static inline void set_raw_inline(struct f2fs_inode_info *fi, - struct f2fs_inode *ri) +static inline void set_raw_inline(struct inode *inode, struct f2fs_inode *ri) { ri->i_inline = 0; - if (is_inode_flag_set(fi, FI_INLINE_XATTR)) + if (is_inode_flag_set(inode, FI_INLINE_XATTR)) ri->i_inline |= F2FS_INLINE_XATTR; - if (is_inode_flag_set(fi, FI_INLINE_DATA)) + if (is_inode_flag_set(inode, FI_INLINE_DATA)) ri->i_inline |= F2FS_INLINE_DATA; - if (is_inode_flag_set(fi, FI_INLINE_DENTRY)) + if (is_inode_flag_set(inode, FI_INLINE_DENTRY)) ri->i_inline |= F2FS_INLINE_DENTRY; - if (is_inode_flag_set(fi, FI_DATA_EXIST)) + if (is_inode_flag_set(inode, FI_DATA_EXIST)) ri->i_inline |= F2FS_DATA_EXIST; - if (is_inode_flag_set(fi, FI_INLINE_DOTS)) + if (is_inode_flag_set(inode, FI_INLINE_DOTS)) ri->i_inline |= F2FS_INLINE_DOTS; } static inline int f2fs_has_inline_xattr(struct inode *inode) { - return is_inode_flag_set(F2FS_I(inode), FI_INLINE_XATTR); + return is_inode_flag_set(inode, FI_INLINE_XATTR); } static inline unsigned int addrs_per_inode(struct inode *inode) @@ -1618,43 +1724,43 @@ static inline int inline_xattr_size(struct inode *inode) static inline int f2fs_has_inline_data(struct inode *inode) { - return is_inode_flag_set(F2FS_I(inode), FI_INLINE_DATA); + return is_inode_flag_set(inode, FI_INLINE_DATA); } static inline void f2fs_clear_inline_inode(struct inode *inode) { - clear_inode_flag(F2FS_I(inode), FI_INLINE_DATA); - clear_inode_flag(F2FS_I(inode), FI_DATA_EXIST); + clear_inode_flag(inode, FI_INLINE_DATA); + clear_inode_flag(inode, FI_DATA_EXIST); } static inline int f2fs_exist_data(struct inode *inode) { - return is_inode_flag_set(F2FS_I(inode), FI_DATA_EXIST); + return is_inode_flag_set(inode, FI_DATA_EXIST); } static inline int f2fs_has_inline_dots(struct inode *inode) { - return is_inode_flag_set(F2FS_I(inode), FI_INLINE_DOTS); + return is_inode_flag_set(inode, FI_INLINE_DOTS); } static inline bool f2fs_is_atomic_file(struct inode *inode) { - return is_inode_flag_set(F2FS_I(inode), FI_ATOMIC_FILE); + return is_inode_flag_set(inode, FI_ATOMIC_FILE); } static inline bool f2fs_is_volatile_file(struct inode *inode) { - return is_inode_flag_set(F2FS_I(inode), FI_VOLATILE_FILE); + return is_inode_flag_set(inode, FI_VOLATILE_FILE); } static inline bool f2fs_is_first_block_written(struct inode *inode) { - return is_inode_flag_set(F2FS_I(inode), FI_FIRST_BLOCK_WRITTEN); + return is_inode_flag_set(inode, FI_FIRST_BLOCK_WRITTEN); } static inline bool f2fs_is_drop_cache(struct inode *inode) { - return is_inode_flag_set(F2FS_I(inode), FI_DROP_CACHE); + return is_inode_flag_set(inode, FI_DROP_CACHE); } static inline void *inline_data_addr(struct page *page) @@ -1665,7 +1771,7 @@ static inline void *inline_data_addr(struct page *page) static inline int f2fs_has_inline_dentry(struct inode *inode) { - return is_inode_flag_set(F2FS_I(inode), FI_INLINE_DENTRY); + return is_inode_flag_set(inode, FI_INLINE_DENTRY); } static inline void f2fs_dentry_kunmap(struct inode *dir, struct page *page) @@ -1682,11 +1788,13 @@ static inline int is_file(struct inode *inode, int type) static inline void set_file(struct inode *inode, int type) { F2FS_I(inode)->i_advise |= type; + f2fs_mark_inode_dirty_sync(inode); } static inline void clear_file(struct inode *inode, int type) { F2FS_I(inode)->i_advise &= ~type; + f2fs_mark_inode_dirty_sync(inode); } static inline int f2fs_readonly(struct super_block *sb) @@ -1713,7 +1821,7 @@ static inline bool is_dot_dotdot(const struct qstr *str) static inline bool f2fs_may_extent_tree(struct inode *inode) { if (!test_opt(F2FS_I_SB(inode), EXTENT_CACHE) || - is_inode_flag_set(F2FS_I(inode), FI_NO_EXTENT)) + is_inode_flag_set(inode, FI_NO_EXTENT)) return false; return S_ISREG(inode->i_mode); @@ -1749,7 +1857,7 @@ static inline void *f2fs_kvzalloc(size_t size, gfp_t flags) } #define get_inode_mode(i) \ - ((is_inode_flag_set(F2FS_I(i), FI_ACL_MODE)) ? \ + ((is_inode_flag_set(i, FI_ACL_MODE)) ? \ (F2FS_I(i)->i_acl_mode) : ((i)->i_mode)) /* get offset of first page in next direct node */ @@ -1764,7 +1872,7 @@ static inline void *f2fs_kvzalloc(size_t size, gfp_t flags) int f2fs_sync_file(struct file *, loff_t, loff_t, int); void truncate_data_blocks(struct dnode_of_data *); int truncate_blocks(struct inode *, u64, bool); -int f2fs_truncate(struct inode *, bool); +int f2fs_truncate(struct inode *); int f2fs_getattr(struct vfsmount *, struct dentry *, struct kstat *); int f2fs_setattr(struct dentry *, struct iattr *); int truncate_hole(struct inode *, pgoff_t, pgoff_t); @@ -1805,11 +1913,11 @@ struct page *init_inode_metadata(struct inode *, struct inode *, const struct qstr *, struct page *); void update_parent_metadata(struct inode *, struct inode *, unsigned int); int room_for_filename(const void *, int, int); -void f2fs_drop_nlink(struct inode *, struct inode *, struct page *); +void f2fs_drop_nlink(struct inode *, struct inode *); struct f2fs_dir_entry *f2fs_find_entry(struct inode *, struct qstr *, struct page **); struct f2fs_dir_entry *f2fs_parent_dir(struct inode *, struct page **); -ino_t f2fs_inode_by_name(struct inode *, struct qstr *); +ino_t f2fs_inode_by_name(struct inode *, struct qstr *, struct page **); void f2fs_set_link(struct inode *, struct f2fs_dir_entry *, struct page *, struct inode *); int update_dent_inode(struct inode *, struct inode *, const struct qstr *); @@ -1833,6 +1941,8 @@ static inline int f2fs_add_link(struct dentry *dentry, struct inode *inode) /* * super.c */ +int f2fs_inode_dirtied(struct inode *); +void f2fs_inode_synced(struct inode *); int f2fs_commit_super(struct f2fs_sb_info *, bool); int f2fs_sync_fs(struct super_block *, int); extern __printf(3, 4) @@ -1866,11 +1976,11 @@ struct page *new_node_page(struct dnode_of_data *, unsigned int, struct page *); void ra_node_page(struct f2fs_sb_info *, nid_t); struct page *get_node_page(struct f2fs_sb_info *, pgoff_t); struct page *get_node_page_ra(struct page *, int); -void sync_inode_page(struct dnode_of_data *); void move_node_page(struct page *, int); -int fsync_node_pages(struct f2fs_sb_info *, nid_t, struct writeback_control *, - bool); +int fsync_node_pages(struct f2fs_sb_info *, struct inode *, + struct writeback_control *, bool); int sync_node_pages(struct f2fs_sb_info *, struct writeback_control *); +void build_free_nids(struct f2fs_sb_info *); bool alloc_nid(struct f2fs_sb_info *, nid_t *); void alloc_nid_done(struct f2fs_sb_info *, nid_t); void alloc_nid_failed(struct f2fs_sb_info *, nid_t); @@ -1944,9 +2054,10 @@ void add_ino_entry(struct f2fs_sb_info *, nid_t, int type); void remove_ino_entry(struct f2fs_sb_info *, nid_t, int type); void release_ino_entry(struct f2fs_sb_info *, bool); bool exist_written_data(struct f2fs_sb_info *, nid_t, int); +int f2fs_sync_inode_meta(struct f2fs_sb_info *); int acquire_orphan_inode(struct f2fs_sb_info *); void release_orphan_inode(struct f2fs_sb_info *); -void add_orphan_inode(struct f2fs_sb_info *, nid_t); +void add_orphan_inode(struct inode *); void remove_orphan_inode(struct f2fs_sb_info *, nid_t); int recover_orphan_inodes(struct f2fs_sb_info *); int get_valid_checkpoint(struct f2fs_sb_info *); @@ -1981,6 +2092,7 @@ struct page *get_new_data_page(struct inode *, struct page *, pgoff_t, bool); int do_write_data_page(struct f2fs_io_info *); int f2fs_map_blocks(struct inode *, struct f2fs_map_blocks *, int, int); int f2fs_fiemap(struct inode *inode, struct fiemap_extent_info *, u64, u64); +void f2fs_set_page_dirty_nobuffers(struct page *); void f2fs_invalidate_page(struct page *, unsigned int, unsigned int); int f2fs_release_page(struct page *, gfp_t); @@ -2012,7 +2124,7 @@ struct f2fs_stat_info { unsigned long long hit_total, total_ext; int ext_tree, zombie_tree, ext_node; s64 ndirty_node, ndirty_dent, ndirty_meta, ndirty_data, inmem_pages; - unsigned int ndirty_dirs, ndirty_files; + unsigned int ndirty_dirs, ndirty_files, ndirty_all; int nats, dirty_nats, sits, dirty_sits, fnids; int total_count, utilization; int bg_gc, wb_bios; @@ -2181,7 +2293,6 @@ int f2fs_write_inline_data(struct inode *, struct page *); bool recover_inline_data(struct inode *, struct page *); struct f2fs_dir_entry *find_in_inline_dir(struct inode *, struct fscrypt_name *, struct page **); -struct f2fs_dir_entry *f2fs_parent_inline_dir(struct inode *, struct page **); int make_empty_inline_dir(struct inode *inode, struct inode *, struct page *); int f2fs_add_inline_entry(struct inode *, const struct qstr *, struct inode *, nid_t, umode_t); @@ -2206,6 +2317,7 @@ void f2fs_leave_shrinker(struct f2fs_sb_info *); */ unsigned int f2fs_shrink_extent_tree(struct f2fs_sb_info *, int); bool f2fs_init_extent_tree(struct inode *, struct f2fs_extent *); +void f2fs_drop_extent_tree(struct inode *); unsigned int f2fs_destroy_extent_node(struct inode *); void f2fs_destroy_extent_tree(struct inode *); bool f2fs_lookup_extent_cache(struct inode *, pgoff_t, struct extent_info *); @@ -2241,6 +2353,26 @@ static inline int f2fs_sb_has_crypto(struct super_block *sb) return F2FS_HAS_FEATURE(sb, F2FS_FEATURE_ENCRYPT); } +static inline int f2fs_sb_mounted_hmsmr(struct super_block *sb) +{ + return F2FS_HAS_FEATURE(sb, F2FS_FEATURE_HMSMR); +} + +static inline void set_opt_mode(struct f2fs_sb_info *sbi, unsigned int mt) +{ + clear_opt(sbi, ADAPTIVE); + clear_opt(sbi, LFS); + + switch (mt) { + case F2FS_MOUNT_ADAPTIVE: + set_opt(sbi, ADAPTIVE); + break; + case F2FS_MOUNT_LFS: + set_opt(sbi, LFS); + break; + } +} + static inline bool f2fs_may_encrypt(struct inode *inode) { #ifdef CONFIG_F2FS_FS_ENCRYPTION diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c index f4c0086655c4..0e493f63ea41 100644 --- a/fs/f2fs/file.c +++ b/fs/f2fs/file.c @@ -21,6 +21,7 @@ #include <linux/mount.h> #include <linux/pagevec.h> #include <linux/uuid.h> +#include <linux/file.h> #include "f2fs.h" #include "node.h" @@ -81,7 +82,8 @@ static int f2fs_vm_page_mkwrite(struct vm_area_struct *vma, zero_user_segment(page, offset, PAGE_SIZE); } set_page_dirty(page); - SetPageUptodate(page); + if (!PageUptodate(page)) + SetPageUptodate(page); trace_f2fs_vm_page_mkwrite(page, DATA); mapped: @@ -171,22 +173,16 @@ static void try_to_fix_pino(struct inode *inode) fi->xattr_ver = 0; if (file_wrong_pino(inode) && inode->i_nlink == 1 && get_parent_ino(inode, &pino)) { - fi->i_pino = pino; + f2fs_i_pino_write(inode, pino); file_got_pino(inode); - up_write(&fi->i_sem); - - mark_inode_dirty_sync(inode); - f2fs_write_inode(inode, NULL); - } else { - up_write(&fi->i_sem); } + up_write(&fi->i_sem); } static int f2fs_do_sync_file(struct file *file, loff_t start, loff_t end, int datasync, bool atomic) { struct inode *inode = file->f_mapping->host; - struct f2fs_inode_info *fi = F2FS_I(inode); struct f2fs_sb_info *sbi = F2FS_I_SB(inode); nid_t ino = inode->i_ino; int ret = 0; @@ -204,9 +200,9 @@ static int f2fs_do_sync_file(struct file *file, loff_t start, loff_t end, /* if fdatasync is triggered, let's do in-place-update */ if (datasync || get_dirty_pages(inode) <= SM_I(sbi)->min_fsync_blocks) - set_inode_flag(fi, FI_NEED_IPU); + set_inode_flag(inode, FI_NEED_IPU); ret = filemap_write_and_wait_range(inode->i_mapping, start, end); - clear_inode_flag(fi, FI_NEED_IPU); + clear_inode_flag(inode, FI_NEED_IPU); if (ret) { trace_f2fs_sync_file_exit(inode, need_cp, datasync, ret); @@ -214,7 +210,7 @@ static int f2fs_do_sync_file(struct file *file, loff_t start, loff_t end, } /* if the inode is dirty, let's recover all the time */ - if (!datasync) { + if (!datasync && !f2fs_skip_inode_update(inode)) { f2fs_write_inode(inode, NULL); goto go_write; } @@ -222,14 +218,14 @@ static int f2fs_do_sync_file(struct file *file, loff_t start, loff_t end, /* * if there is no written data, don't waste time to write recovery info. */ - if (!is_inode_flag_set(fi, FI_APPEND_WRITE) && + if (!is_inode_flag_set(inode, FI_APPEND_WRITE) && !exist_written_data(sbi, ino, APPEND_INO)) { /* it may call write_inode just prior to fsync */ if (need_inode_page_update(sbi, ino)) goto go_write; - if (is_inode_flag_set(fi, FI_UPDATE_WRITE) || + if (is_inode_flag_set(inode, FI_UPDATE_WRITE) || exist_written_data(sbi, ino, UPDATE_INO)) goto flush_out; goto out; @@ -239,9 +235,9 @@ go_write: * Both of fdatasync() and fsync() are able to be recovered from * sudden-power-off. */ - down_read(&fi->i_sem); + down_read(&F2FS_I(inode)->i_sem); need_cp = need_do_checkpoint(inode); - up_read(&fi->i_sem); + up_read(&F2FS_I(inode)->i_sem); if (need_cp) { /* all the dirty node pages should be flushed for POR */ @@ -252,12 +248,12 @@ go_write: * will be used only for fsynced inodes after checkpoint. */ try_to_fix_pino(inode); - clear_inode_flag(fi, FI_APPEND_WRITE); - clear_inode_flag(fi, FI_UPDATE_WRITE); + clear_inode_flag(inode, FI_APPEND_WRITE); + clear_inode_flag(inode, FI_UPDATE_WRITE); goto out; } sync_nodes: - ret = fsync_node_pages(sbi, ino, &wbc, atomic); + ret = fsync_node_pages(sbi, inode, &wbc, atomic); if (ret) goto out; @@ -268,7 +264,7 @@ sync_nodes: } if (need_inode_block_update(sbi, ino)) { - mark_inode_dirty_sync(inode); + f2fs_mark_inode_dirty_sync(inode); f2fs_write_inode(inode, NULL); goto sync_nodes; } @@ -279,10 +275,10 @@ sync_nodes: /* once recovery info is written, don't need to tack this */ remove_ino_entry(sbi, ino, APPEND_INO); - clear_inode_flag(fi, FI_APPEND_WRITE); + clear_inode_flag(inode, FI_APPEND_WRITE); flush_out: remove_ino_entry(sbi, ino, UPDATE_INO); - clear_inode_flag(fi, FI_UPDATE_WRITE); + clear_inode_flag(inode, FI_UPDATE_WRITE); ret = f2fs_issue_flush(sbi); f2fs_update_time(sbi, REQ_TIME); out: @@ -360,7 +356,7 @@ static loff_t f2fs_seek_block(struct file *file, loff_t offset, int whence) for (; data_ofs < isize; data_ofs = (loff_t)pgofs << PAGE_SHIFT) { set_new_dnode(&dn, inode, NULL, NULL, 0); - err = get_dnode_of_data(&dn, pgofs, LOOKUP_NODE_RA); + err = get_dnode_of_data(&dn, pgofs, LOOKUP_NODE); if (err && err != -ENOENT) { goto fail; } else if (err == -ENOENT) { @@ -487,8 +483,7 @@ int truncate_data_blocks_range(struct dnode_of_data *dn, int count) set_data_blkaddr(dn); invalidate_blocks(sbi, blkaddr); if (dn->ofs_in_node == 0 && IS_INODE(dn->node_page)) - clear_inode_flag(F2FS_I(dn->inode), - FI_FIRST_BLOCK_WRITTEN); + clear_inode_flag(dn->inode, FI_FIRST_BLOCK_WRITTEN); nr_free++; } @@ -502,7 +497,6 @@ int truncate_data_blocks_range(struct dnode_of_data *dn, int count) dn->inode) + ofs; f2fs_update_extent_cache_range(dn, fofs, 0, len); dec_valid_block_count(sbi, dn->inode, nr_free); - sync_inode_page(dn); } dn->ofs_in_node = ofs; @@ -616,7 +610,7 @@ free_partial: return err; } -int f2fs_truncate(struct inode *inode, bool lock) +int f2fs_truncate(struct inode *inode) { int err; @@ -633,12 +627,12 @@ int f2fs_truncate(struct inode *inode, bool lock) return err; } - err = truncate_blocks(inode, i_size_read(inode), lock); + err = truncate_blocks(inode, i_size_read(inode), true); if (err) return err; inode->i_mtime = inode->i_ctime = CURRENT_TIME; - mark_inode_dirty(inode); + f2fs_mark_inode_dirty_sync(inode); return 0; } @@ -654,7 +648,6 @@ int f2fs_getattr(struct vfsmount *mnt, #ifdef CONFIG_F2FS_FS_POSIX_ACL static void __setattr_copy(struct inode *inode, const struct iattr *attr) { - struct f2fs_inode_info *fi = F2FS_I(inode); unsigned int ia_valid = attr->ia_valid; if (ia_valid & ATTR_UID) @@ -675,7 +668,7 @@ static void __setattr_copy(struct inode *inode, const struct iattr *attr) if (!in_group_p(inode->i_gid) && !capable(CAP_FSETID)) mode &= ~S_ISGID; - set_acl_inode(fi, mode); + set_acl_inode(inode, mode); } } #else @@ -685,7 +678,6 @@ static void __setattr_copy(struct inode *inode, const struct iattr *attr) int f2fs_setattr(struct dentry *dentry, struct iattr *attr) { struct inode *inode = d_inode(dentry); - struct f2fs_inode_info *fi = F2FS_I(inode); int err; err = inode_change_ok(inode, attr); @@ -699,7 +691,7 @@ int f2fs_setattr(struct dentry *dentry, struct iattr *attr) if (attr->ia_size <= i_size_read(inode)) { truncate_setsize(inode, attr->ia_size); - err = f2fs_truncate(inode, true); + err = f2fs_truncate(inode); if (err) return err; f2fs_balance_fs(F2FS_I_SB(inode), true); @@ -724,13 +716,13 @@ int f2fs_setattr(struct dentry *dentry, struct iattr *attr) if (attr->ia_valid & ATTR_MODE) { err = posix_acl_chmod(inode, get_inode_mode(inode)); - if (err || is_inode_flag_set(fi, FI_ACL_MODE)) { - inode->i_mode = fi->i_acl_mode; - clear_inode_flag(fi, FI_ACL_MODE); + if (err || is_inode_flag_set(inode, FI_ACL_MODE)) { + inode->i_mode = F2FS_I(inode)->i_acl_mode; + clear_inode_flag(inode, FI_ACL_MODE); } } - mark_inode_dirty(inode); + f2fs_mark_inode_dirty_sync(inode); return err; } @@ -859,79 +851,199 @@ static int punch_hole(struct inode *inode, loff_t offset, loff_t len) return ret; } -static int __exchange_data_block(struct inode *inode, pgoff_t src, - pgoff_t dst, bool full) +static int __read_out_blkaddrs(struct inode *inode, block_t *blkaddr, + int *do_replace, pgoff_t off, pgoff_t len) { struct f2fs_sb_info *sbi = F2FS_I_SB(inode); struct dnode_of_data dn; - block_t new_addr; - bool do_replace = false; - int ret; + int ret, done, i; +next_dnode: set_new_dnode(&dn, inode, NULL, NULL, 0); - ret = get_dnode_of_data(&dn, src, LOOKUP_NODE_RA); + ret = get_dnode_of_data(&dn, off, LOOKUP_NODE_RA); if (ret && ret != -ENOENT) { return ret; } else if (ret == -ENOENT) { - new_addr = NULL_ADDR; - } else { - new_addr = dn.data_blkaddr; - if (!is_checkpointed_data(sbi, new_addr)) { + if (dn.max_level == 0) + return -ENOENT; + done = min((pgoff_t)ADDRS_PER_BLOCK - dn.ofs_in_node, len); + blkaddr += done; + do_replace += done; + goto next; + } + + done = min((pgoff_t)ADDRS_PER_PAGE(dn.node_page, inode) - + dn.ofs_in_node, len); + for (i = 0; i < done; i++, blkaddr++, do_replace++, dn.ofs_in_node++) { + *blkaddr = datablock_addr(dn.node_page, dn.ofs_in_node); + if (!is_checkpointed_data(sbi, *blkaddr)) { + + if (test_opt(sbi, LFS)) { + f2fs_put_dnode(&dn); + return -ENOTSUPP; + } + /* do not invalidate this block address */ f2fs_update_data_blkaddr(&dn, NULL_ADDR); - do_replace = true; + *do_replace = 1; } - f2fs_put_dnode(&dn); } + f2fs_put_dnode(&dn); +next: + len -= done; + off += done; + if (len) + goto next_dnode; + return 0; +} - if (new_addr == NULL_ADDR) - return full ? truncate_hole(inode, dst, dst + 1) : 0; +static int __roll_back_blkaddrs(struct inode *inode, block_t *blkaddr, + int *do_replace, pgoff_t off, int len) +{ + struct f2fs_sb_info *sbi = F2FS_I_SB(inode); + struct dnode_of_data dn; + int ret, i; - if (do_replace) { - struct page *ipage = get_node_page(sbi, inode->i_ino); - struct node_info ni; + for (i = 0; i < len; i++, do_replace++, blkaddr++) { + if (*do_replace == 0) + continue; - if (IS_ERR(ipage)) { - ret = PTR_ERR(ipage); - goto err_out; + set_new_dnode(&dn, inode, NULL, NULL, 0); + ret = get_dnode_of_data(&dn, off + i, LOOKUP_NODE_RA); + if (ret) { + dec_valid_block_count(sbi, inode, 1); + invalidate_blocks(sbi, *blkaddr); + } else { + f2fs_update_data_blkaddr(&dn, *blkaddr); } + f2fs_put_dnode(&dn); + } + return 0; +} - set_new_dnode(&dn, inode, ipage, NULL, 0); - ret = f2fs_reserve_block(&dn, dst); - if (ret) - goto err_out; +static int __clone_blkaddrs(struct inode *src_inode, struct inode *dst_inode, + block_t *blkaddr, int *do_replace, + pgoff_t src, pgoff_t dst, pgoff_t len, bool full) +{ + struct f2fs_sb_info *sbi = F2FS_I_SB(src_inode); + pgoff_t i = 0; + int ret; + + while (i < len) { + if (blkaddr[i] == NULL_ADDR && !full) { + i++; + continue; + } - truncate_data_blocks_range(&dn, 1); + if (do_replace[i] || blkaddr[i] == NULL_ADDR) { + struct dnode_of_data dn; + struct node_info ni; + size_t new_size; + pgoff_t ilen; - get_node_info(sbi, dn.nid, &ni); - f2fs_replace_block(sbi, &dn, dn.data_blkaddr, new_addr, - ni.version, true, false); - f2fs_put_dnode(&dn); - } else { - struct page *psrc, *pdst; + set_new_dnode(&dn, dst_inode, NULL, NULL, 0); + ret = get_dnode_of_data(&dn, dst + i, ALLOC_NODE); + if (ret) + return ret; + + get_node_info(sbi, dn.nid, &ni); + ilen = min((pgoff_t) + ADDRS_PER_PAGE(dn.node_page, dst_inode) - + dn.ofs_in_node, len - i); + do { + dn.data_blkaddr = datablock_addr(dn.node_page, + dn.ofs_in_node); + truncate_data_blocks_range(&dn, 1); + + if (do_replace[i]) { + f2fs_i_blocks_write(src_inode, + 1, false); + f2fs_i_blocks_write(dst_inode, + 1, true); + f2fs_replace_block(sbi, &dn, dn.data_blkaddr, + blkaddr[i], ni.version, true, false); + + do_replace[i] = 0; + } + dn.ofs_in_node++; + i++; + new_size = (dst + i) << PAGE_SHIFT; + if (dst_inode->i_size < new_size) + f2fs_i_size_write(dst_inode, new_size); + } while ((do_replace[i] || blkaddr[i] == NULL_ADDR) && --ilen); - psrc = get_lock_data_page(inode, src, true); - if (IS_ERR(psrc)) - return PTR_ERR(psrc); - pdst = get_new_data_page(inode, NULL, dst, true); - if (IS_ERR(pdst)) { + f2fs_put_dnode(&dn); + } else { + struct page *psrc, *pdst; + + psrc = get_lock_data_page(src_inode, src + i, true); + if (IS_ERR(psrc)) + return PTR_ERR(psrc); + pdst = get_new_data_page(dst_inode, NULL, dst + i, + true); + if (IS_ERR(pdst)) { + f2fs_put_page(psrc, 1); + return PTR_ERR(pdst); + } + f2fs_copy_page(psrc, pdst); + set_page_dirty(pdst); + f2fs_put_page(pdst, 1); f2fs_put_page(psrc, 1); - return PTR_ERR(pdst); - } - f2fs_copy_page(psrc, pdst); - set_page_dirty(pdst); - f2fs_put_page(pdst, 1); - f2fs_put_page(psrc, 1); - return truncate_hole(inode, src, src + 1); + ret = truncate_hole(src_inode, src + i, src + i + 1); + if (ret) + return ret; + i++; + } } return 0; +} -err_out: - if (!get_dnode_of_data(&dn, src, LOOKUP_NODE)) { - f2fs_update_data_blkaddr(&dn, new_addr); - f2fs_put_dnode(&dn); +static int __exchange_data_block(struct inode *src_inode, + struct inode *dst_inode, pgoff_t src, pgoff_t dst, + pgoff_t len, bool full) +{ + block_t *src_blkaddr; + int *do_replace; + pgoff_t olen; + int ret; + + while (len) { + olen = min((pgoff_t)4 * ADDRS_PER_BLOCK, len); + + src_blkaddr = f2fs_kvzalloc(sizeof(block_t) * olen, GFP_KERNEL); + if (!src_blkaddr) + return -ENOMEM; + + do_replace = f2fs_kvzalloc(sizeof(int) * olen, GFP_KERNEL); + if (!do_replace) { + kvfree(src_blkaddr); + return -ENOMEM; + } + + ret = __read_out_blkaddrs(src_inode, src_blkaddr, + do_replace, src, olen); + if (ret) + goto roll_back; + + ret = __clone_blkaddrs(src_inode, dst_inode, src_blkaddr, + do_replace, src, dst, olen, full); + if (ret) + goto roll_back; + + src += olen; + dst += olen; + len -= olen; + + kvfree(src_blkaddr); + kvfree(do_replace); } + return 0; + +roll_back: + __roll_back_blkaddrs(src_inode, src_blkaddr, do_replace, src, len); + kvfree(src_blkaddr); + kvfree(do_replace); return ret; } @@ -939,16 +1051,15 @@ static int f2fs_do_collapse(struct inode *inode, pgoff_t start, pgoff_t end) { struct f2fs_sb_info *sbi = F2FS_I_SB(inode); pgoff_t nrpages = (i_size_read(inode) + PAGE_SIZE - 1) / PAGE_SIZE; - int ret = 0; + int ret; - for (; end < nrpages; start++, end++) { - f2fs_balance_fs(sbi, true); - f2fs_lock_op(sbi); - ret = __exchange_data_block(inode, end, start, true); - f2fs_unlock_op(sbi); - if (ret) - break; - } + f2fs_balance_fs(sbi, true); + f2fs_lock_op(sbi); + + f2fs_drop_extent_tree(inode); + + ret = __exchange_data_block(inode, inode, end, start, nrpages - end, true); + f2fs_unlock_op(sbi); return ret; } @@ -992,7 +1103,7 @@ static int f2fs_collapse_range(struct inode *inode, loff_t offset, loff_t len) ret = truncate_blocks(inode, new_size, true); if (!ret) - i_size_write(inode, new_size); + f2fs_i_size_write(inode, new_size); return ret; } @@ -1128,11 +1239,8 @@ static int f2fs_zero_range(struct inode *inode, loff_t offset, loff_t len, } out: - if (!(mode & FALLOC_FL_KEEP_SIZE) && i_size_read(inode) < new_size) { - i_size_write(inode, new_size); - mark_inode_dirty(inode); - update_inode_page(inode); - } + if (!(mode & FALLOC_FL_KEEP_SIZE) && i_size_read(inode) < new_size) + f2fs_i_size_write(inode, new_size); return ret; } @@ -1140,7 +1248,7 @@ out: static int f2fs_insert_range(struct inode *inode, loff_t offset, loff_t len) { struct f2fs_sb_info *sbi = F2FS_I_SB(inode); - pgoff_t pg_start, pg_end, delta, nrpages, idx; + pgoff_t nr, pg_start, pg_end, delta, idx; loff_t new_size; int ret = 0; @@ -1175,14 +1283,20 @@ static int f2fs_insert_range(struct inode *inode, loff_t offset, loff_t len) pg_start = offset >> PAGE_SHIFT; pg_end = (offset + len) >> PAGE_SHIFT; delta = pg_end - pg_start; - nrpages = (i_size_read(inode) + PAGE_SIZE - 1) / PAGE_SIZE; + idx = (i_size_read(inode) + PAGE_SIZE - 1) / PAGE_SIZE; + + while (!ret && idx > pg_start) { + nr = idx - pg_start; + if (nr > delta) + nr = delta; + idx -= nr; - for (idx = nrpages - 1; idx >= pg_start && idx != -1; idx--) { f2fs_lock_op(sbi); - ret = __exchange_data_block(inode, idx, idx + delta, false); + f2fs_drop_extent_tree(inode); + + ret = __exchange_data_block(inode, inode, idx, + idx + delta, nr, false); f2fs_unlock_op(sbi); - if (ret) - break; } /* write out all moved pages, if possible */ @@ -1190,7 +1304,7 @@ static int f2fs_insert_range(struct inode *inode, loff_t offset, loff_t len) truncate_pagecache(inode, offset); if (!ret) - i_size_write(inode, new_size); + f2fs_i_size_write(inode, new_size); return ret; } @@ -1238,11 +1352,8 @@ static int expand_inode_data(struct inode *inode, loff_t offset, new_size = ((loff_t)pg_end << PAGE_SHIFT) + off_end; } - if (!(mode & FALLOC_FL_KEEP_SIZE) && i_size_read(inode) < new_size) { - i_size_write(inode, new_size); - mark_inode_dirty(inode); - update_inode_page(inode); - } + if (!(mode & FALLOC_FL_KEEP_SIZE) && i_size_read(inode) < new_size) + f2fs_i_size_write(inode, new_size); return ret; } @@ -1285,7 +1396,7 @@ static long f2fs_fallocate(struct file *file, int mode, if (!ret) { inode->i_mtime = inode->i_ctime = CURRENT_TIME; - mark_inode_dirty(inode); + f2fs_mark_inode_dirty_sync(inode); f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); } @@ -1310,10 +1421,10 @@ static int f2fs_release_file(struct inode *inode, struct file *filp) if (f2fs_is_atomic_file(inode)) drop_inmem_pages(inode); if (f2fs_is_volatile_file(inode)) { - clear_inode_flag(F2FS_I(inode), FI_VOLATILE_FILE); - set_inode_flag(F2FS_I(inode), FI_DROP_CACHE); + clear_inode_flag(inode, FI_VOLATILE_FILE); + set_inode_flag(inode, FI_DROP_CACHE); filemap_fdatawrite(inode->i_mapping); - clear_inode_flag(F2FS_I(inode), FI_DROP_CACHE); + clear_inode_flag(inode, FI_DROP_CACHE); } return 0; } @@ -1376,9 +1487,8 @@ static int f2fs_ioc_setflags(struct file *filp, unsigned long arg) fi->i_flags = flags; inode_unlock(inode); - f2fs_set_inode_flags(inode); inode->i_ctime = CURRENT_TIME; - mark_inode_dirty(inode); + f2fs_set_inode_flags(inode); out: mnt_drop_write_file(filp); return ret; @@ -1412,7 +1522,7 @@ static int f2fs_ioc_start_atomic_write(struct file *filp) if (ret) goto out; - set_inode_flag(F2FS_I(inode), FI_ATOMIC_FILE); + set_inode_flag(inode, FI_ATOMIC_FILE); f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); if (!get_dirty_pages(inode)) @@ -1423,7 +1533,7 @@ static int f2fs_ioc_start_atomic_write(struct file *filp) inode->i_ino, get_dirty_pages(inode)); ret = filemap_write_and_wait_range(inode->i_mapping, 0, LLONG_MAX); if (ret) - clear_inode_flag(F2FS_I(inode), FI_ATOMIC_FILE); + clear_inode_flag(inode, FI_ATOMIC_FILE); out: inode_unlock(inode); mnt_drop_write_file(filp); @@ -1448,10 +1558,10 @@ static int f2fs_ioc_commit_atomic_write(struct file *filp) goto err_out; if (f2fs_is_atomic_file(inode)) { - clear_inode_flag(F2FS_I(inode), FI_ATOMIC_FILE); + clear_inode_flag(inode, FI_ATOMIC_FILE); ret = commit_inmem_pages(inode); if (ret) { - set_inode_flag(F2FS_I(inode), FI_ATOMIC_FILE); + set_inode_flag(inode, FI_ATOMIC_FILE); goto err_out; } } @@ -1484,7 +1594,7 @@ static int f2fs_ioc_start_volatile_write(struct file *filp) if (ret) goto out; - set_inode_flag(F2FS_I(inode), FI_VOLATILE_FILE); + set_inode_flag(inode, FI_VOLATILE_FILE); f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); out: inode_unlock(inode); @@ -1538,7 +1648,7 @@ static int f2fs_ioc_abort_volatile_write(struct file *filp) if (f2fs_is_atomic_file(inode)) drop_inmem_pages(inode); if (f2fs_is_volatile_file(inode)) { - clear_inode_flag(F2FS_I(inode), FI_VOLATILE_FILE); + clear_inode_flag(inode, FI_VOLATILE_FILE); ret = f2fs_do_sync_file(filp, 0, LLONG_MAX, 0, true); } @@ -1871,7 +1981,7 @@ do_map: continue; } - set_inode_flag(F2FS_I(inode), FI_DO_DEFRAG); + set_inode_flag(inode, FI_DO_DEFRAG); idx = map.m_lblk; while (idx < map.m_lblk + map.m_len && cnt < blk_per_seg) { @@ -1896,14 +2006,14 @@ do_map: if (idx < pg_end && cnt < blk_per_seg) goto do_map; - clear_inode_flag(F2FS_I(inode), FI_DO_DEFRAG); + clear_inode_flag(inode, FI_DO_DEFRAG); err = filemap_fdatawrite(inode->i_mapping); if (err) goto out; } clear_out: - clear_inode_flag(F2FS_I(inode), FI_DO_DEFRAG); + clear_inode_flag(inode, FI_DO_DEFRAG); out: inode_unlock(inode); if (!err) @@ -1959,6 +2069,133 @@ out: return err; } +static int f2fs_move_file_range(struct file *file_in, loff_t pos_in, + struct file *file_out, loff_t pos_out, size_t len) +{ + struct inode *src = file_inode(file_in); + struct inode *dst = file_inode(file_out); + struct f2fs_sb_info *sbi = F2FS_I_SB(src); + size_t olen = len, dst_max_i_size = 0; + size_t dst_osize; + int ret; + + if (file_in->f_path.mnt != file_out->f_path.mnt || + src->i_sb != dst->i_sb) + return -EXDEV; + + if (unlikely(f2fs_readonly(src->i_sb))) + return -EROFS; + + if (S_ISDIR(src->i_mode) || S_ISDIR(dst->i_mode)) + return -EISDIR; + + if (f2fs_encrypted_inode(src) || f2fs_encrypted_inode(dst)) + return -EOPNOTSUPP; + + inode_lock(src); + if (src != dst) + inode_lock(dst); + + ret = -EINVAL; + if (pos_in + len > src->i_size || pos_in + len < pos_in) + goto out_unlock; + if (len == 0) + olen = len = src->i_size - pos_in; + if (pos_in + len == src->i_size) + len = ALIGN(src->i_size, F2FS_BLKSIZE) - pos_in; + if (len == 0) { + ret = 0; + goto out_unlock; + } + + dst_osize = dst->i_size; + if (pos_out + olen > dst->i_size) + dst_max_i_size = pos_out + olen; + + /* verify the end result is block aligned */ + if (!IS_ALIGNED(pos_in, F2FS_BLKSIZE) || + !IS_ALIGNED(pos_in + len, F2FS_BLKSIZE) || + !IS_ALIGNED(pos_out, F2FS_BLKSIZE)) + goto out_unlock; + + ret = f2fs_convert_inline_inode(src); + if (ret) + goto out_unlock; + + ret = f2fs_convert_inline_inode(dst); + if (ret) + goto out_unlock; + + /* write out all dirty pages from offset */ + ret = filemap_write_and_wait_range(src->i_mapping, + pos_in, pos_in + len); + if (ret) + goto out_unlock; + + ret = filemap_write_and_wait_range(dst->i_mapping, + pos_out, pos_out + len); + if (ret) + goto out_unlock; + + f2fs_balance_fs(sbi, true); + f2fs_lock_op(sbi); + ret = __exchange_data_block(src, dst, pos_in, + pos_out, len >> F2FS_BLKSIZE_BITS, false); + + if (!ret) { + if (dst_max_i_size) + f2fs_i_size_write(dst, dst_max_i_size); + else if (dst_osize != dst->i_size) + f2fs_i_size_write(dst, dst_osize); + } + f2fs_unlock_op(sbi); +out_unlock: + if (src != dst) + inode_unlock(dst); + inode_unlock(src); + return ret; +} + +static int f2fs_ioc_move_range(struct file *filp, unsigned long arg) +{ + struct f2fs_move_range range; + struct fd dst; + int err; + + if (!(filp->f_mode & FMODE_READ) || + !(filp->f_mode & FMODE_WRITE)) + return -EBADF; + + if (copy_from_user(&range, (struct f2fs_move_range __user *)arg, + sizeof(range))) + return -EFAULT; + + dst = fdget(range.dst_fd); + if (!dst.file) + return -EBADF; + + if (!(dst.file->f_mode & FMODE_WRITE)) { + err = -EBADF; + goto err_out; + } + + err = mnt_want_write_file(filp); + if (err) + goto err_out; + + err = f2fs_move_file_range(filp, range.pos_in, dst.file, + range.pos_out, range.len); + + mnt_drop_write_file(filp); + + if (copy_to_user((struct f2fs_move_range __user *)arg, + &range, sizeof(range))) + err = -EFAULT; +err_out: + fdput(dst); + return err; +} + long f2fs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) { switch (cmd) { @@ -1994,6 +2231,8 @@ long f2fs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) return f2fs_ioc_write_checkpoint(filp, arg); case F2FS_IOC_DEFRAGMENT: return f2fs_ioc_defragment(filp, arg); + case F2FS_IOC_MOVE_RANGE: + return f2fs_ioc_move_range(filp, arg); default: return -ENOTTY; } @@ -2003,6 +2242,7 @@ static ssize_t f2fs_file_write_iter(struct kiocb *iocb, struct iov_iter *from) { struct file *file = iocb->ki_filp; struct inode *inode = file_inode(file); + struct blk_plug plug; ssize_t ret; if (f2fs_encrypted_inode(inode) && @@ -2014,8 +2254,11 @@ static ssize_t f2fs_file_write_iter(struct kiocb *iocb, struct iov_iter *from) ret = generic_write_checks(iocb, from); if (ret > 0) { ret = f2fs_preallocate_blocks(iocb, from); - if (!ret) + if (!ret) { + blk_start_plug(&plug); ret = __generic_file_write_iter(iocb, from); + blk_finish_plug(&plug); + } } inode_unlock(inode); @@ -2050,6 +2293,8 @@ long f2fs_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg) case F2FS_IOC_WRITE_CHECKPOINT: case F2FS_IOC_DEFRAGMENT: break; + case F2FS_IOC_MOVE_RANGE: + break; default: return -ENOIOCTLCMD; } diff --git a/fs/f2fs/gc.c b/fs/f2fs/gc.c index f06ed73adf99..8f7fa326ce95 100644 --- a/fs/f2fs/gc.c +++ b/fs/f2fs/gc.c @@ -594,11 +594,11 @@ static void move_encrypted_block(struct inode *inode, block_t bidx) /* write page */ lock_page(fio.encrypted_page); - if (unlikely(!PageUptodate(fio.encrypted_page))) { + if (unlikely(fio.encrypted_page->mapping != META_MAPPING(fio.sbi))) { err = -EIO; goto put_page_out; } - if (unlikely(fio.encrypted_page->mapping != META_MAPPING(fio.sbi))) { + if (unlikely(!PageUptodate(fio.encrypted_page))) { err = -EIO; goto put_page_out; } @@ -619,9 +619,9 @@ static void move_encrypted_block(struct inode *inode, block_t bidx) f2fs_submit_page_mbio(&fio); f2fs_update_data_blkaddr(&dn, newaddr); - set_inode_flag(F2FS_I(inode), FI_APPEND_WRITE); + set_inode_flag(inode, FI_APPEND_WRITE); if (page->index == 0) - set_inode_flag(F2FS_I(inode), FI_FIRST_BLOCK_WRITTEN); + set_inode_flag(inode, FI_FIRST_BLOCK_WRITTEN); put_page_out: f2fs_put_page(fio.encrypted_page, 1); recover_block: @@ -656,12 +656,23 @@ static void move_data_page(struct inode *inode, block_t bidx, int gc_type) .page = page, .encrypted_page = NULL, }; + bool is_dirty = PageDirty(page); + int err; + +retry: set_page_dirty(page); f2fs_wait_on_page_writeback(page, DATA, true); if (clear_page_dirty_for_io(page)) inode_dec_dirty_pages(inode); + set_cold_data(page); - do_write_data_page(&fio); + + err = do_write_data_page(&fio); + if (err == -ENOMEM && is_dirty) { + congestion_wait(BLK_RW_ASYNC, HZ/50); + goto retry; + } + clear_cold_data(page); } out: @@ -748,12 +759,32 @@ next_step: /* phase 3 */ inode = find_gc_inode(gc_list, dni.ino); if (inode) { + struct f2fs_inode_info *fi = F2FS_I(inode); + bool locked = false; + + if (S_ISREG(inode->i_mode)) { + if (!down_write_trylock(&fi->dio_rwsem[READ])) + continue; + if (!down_write_trylock( + &fi->dio_rwsem[WRITE])) { + up_write(&fi->dio_rwsem[READ]); + continue; + } + locked = true; + } + start_bidx = start_bidx_of_node(nofs, inode) + ofs_in_node; if (f2fs_encrypted_inode(inode) && S_ISREG(inode->i_mode)) move_encrypted_block(inode, start_bidx); else move_data_page(inode, start_bidx, gc_type); + + if (locked) { + up_write(&fi->dio_rwsem[WRITE]); + up_write(&fi->dio_rwsem[READ]); + } + stat_inc_data_blk_count(sbi, 1, gc_type); } } @@ -802,6 +833,10 @@ static int do_garbage_collect(struct f2fs_sb_info *sbi, blk_start_plug(&plug); for (segno = start_segno; segno < end_segno; segno++) { + + if (get_valid_blocks(sbi, segno, 1) == 0) + continue; + /* find segment summary of victim */ sum_page = find_get_page(META_MAPPING(sbi), GET_SUM_BLOCK(sbi, segno)); @@ -877,10 +912,13 @@ gc_more: * enough free sections, we should flush dent/node blocks and do * garbage collections. */ - if (__get_victim(sbi, &segno, gc_type) || prefree_segments(sbi)) + if (__get_victim(sbi, &segno, gc_type) || + prefree_segments(sbi)) { write_checkpoint(sbi, &cpc); - else if (has_not_enough_free_secs(sbi, 0)) + segno = NULL_SEGNO; + } else if (has_not_enough_free_secs(sbi, 0)) { write_checkpoint(sbi, &cpc); + } } if (segno == NULL_SEGNO && !__get_victim(sbi, &segno, gc_type)) diff --git a/fs/f2fs/inline.c b/fs/f2fs/inline.c index c15e53c1d794..ccea8735de59 100644 --- a/fs/f2fs/inline.c +++ b/fs/f2fs/inline.c @@ -59,7 +59,8 @@ void read_inline_data(struct page *page, struct page *ipage) memcpy(dst_addr, src_addr, MAX_INLINE_DATA); flush_dcache_page(page); kunmap_atomic(dst_addr); - SetPageUptodate(page); + if (!PageUptodate(page)) + SetPageUptodate(page); } bool truncate_inline_inode(struct page *ipage, u64 from) @@ -73,7 +74,7 @@ bool truncate_inline_inode(struct page *ipage, u64 from) f2fs_wait_on_page_writeback(ipage, NODE, true); memset(addr + from, 0, MAX_INLINE_DATA - from); - + set_page_dirty(ipage); return true; } @@ -97,7 +98,8 @@ int f2fs_read_inline_data(struct inode *inode, struct page *page) else read_inline_data(page, ipage); - SetPageUptodate(page); + if (!PageUptodate(page)) + SetPageUptodate(page); f2fs_put_page(ipage, 1); unlock_page(page); return 0; @@ -139,7 +141,7 @@ int f2fs_convert_inline_page(struct dnode_of_data *dn, struct page *page) inode_dec_dirty_pages(dn->inode); /* this converted inline_data should be recovered. */ - set_inode_flag(F2FS_I(dn->inode), FI_APPEND_WRITE); + set_inode_flag(dn->inode, FI_APPEND_WRITE); /* clear inline data and flag after data writeback */ truncate_inline_inode(dn->inode_page, 0); @@ -147,7 +149,6 @@ int f2fs_convert_inline_page(struct dnode_of_data *dn, struct page *page) clear_out: stat_dec_inline_inode(dn->inode); f2fs_clear_inline_inode(dn->inode); - sync_inode_page(dn); f2fs_put_dnode(dn); return 0; } @@ -213,11 +214,11 @@ int f2fs_write_inline_data(struct inode *inode, struct page *page) dst_addr = inline_data_addr(dn.inode_page); memcpy(dst_addr, src_addr, MAX_INLINE_DATA); kunmap_atomic(src_addr); + set_page_dirty(dn.inode_page); - set_inode_flag(F2FS_I(inode), FI_APPEND_WRITE); - set_inode_flag(F2FS_I(inode), FI_DATA_EXIST); + set_inode_flag(inode, FI_APPEND_WRITE); + set_inode_flag(inode, FI_DATA_EXIST); - sync_inode_page(&dn); clear_inline_node(dn.inode_page); f2fs_put_dnode(&dn); return 0; @@ -253,10 +254,10 @@ process_inline: dst_addr = inline_data_addr(ipage); memcpy(dst_addr, src_addr, MAX_INLINE_DATA); - set_inode_flag(F2FS_I(inode), FI_INLINE_DATA); - set_inode_flag(F2FS_I(inode), FI_DATA_EXIST); + set_inode_flag(inode, FI_INLINE_DATA); + set_inode_flag(inode, FI_DATA_EXIST); - update_inode(inode, ipage); + set_page_dirty(ipage); f2fs_put_page(ipage, 1); return true; } @@ -267,7 +268,6 @@ process_inline: if (!truncate_inline_inode(ipage, 0)) return false; f2fs_clear_inline_inode(inode); - update_inode(inode, ipage); f2fs_put_page(ipage, 1); } else if (ri && (ri->i_inline & F2FS_INLINE_DATA)) { if (truncate_blocks(inode, 0, false)) @@ -289,8 +289,10 @@ struct f2fs_dir_entry *find_in_inline_dir(struct inode *dir, f2fs_hash_t namehash; ipage = get_node_page(sbi, dir->i_ino); - if (IS_ERR(ipage)) + if (IS_ERR(ipage)) { + *res_page = ipage; return NULL; + } namehash = f2fs_dentry_hash(&name); @@ -307,25 +309,6 @@ struct f2fs_dir_entry *find_in_inline_dir(struct inode *dir, return de; } -struct f2fs_dir_entry *f2fs_parent_inline_dir(struct inode *dir, - struct page **p) -{ - struct f2fs_sb_info *sbi = F2FS_I_SB(dir); - struct page *ipage; - struct f2fs_dir_entry *de; - struct f2fs_inline_dentry *dentry_blk; - - ipage = get_node_page(sbi, dir->i_ino); - if (IS_ERR(ipage)) - return NULL; - - dentry_blk = inline_data_addr(ipage); - de = &dentry_blk->dentry[1]; - *p = ipage; - unlock_page(ipage); - return de; -} - int make_empty_inline_dir(struct inode *inode, struct inode *parent, struct page *ipage) { @@ -340,10 +323,8 @@ int make_empty_inline_dir(struct inode *inode, struct inode *parent, set_page_dirty(ipage); /* update i_size to MAX_INLINE_DATA */ - if (i_size_read(inode) < MAX_INLINE_DATA) { - i_size_write(inode, MAX_INLINE_DATA); - set_inode_flag(F2FS_I(inode), FI_UPDATE_DIR); - } + if (i_size_read(inode) < MAX_INLINE_DATA) + f2fs_i_size_write(inode, MAX_INLINE_DATA); return 0; } @@ -392,22 +373,19 @@ static int f2fs_move_inline_dirents(struct inode *dir, struct page *ipage, NR_INLINE_DENTRY * F2FS_SLOT_LEN); kunmap_atomic(dentry_blk); - SetPageUptodate(page); + if (!PageUptodate(page)) + SetPageUptodate(page); set_page_dirty(page); /* clear inline dir and flag after data writeback */ truncate_inline_inode(ipage, 0); stat_dec_inline_dir(dir); - clear_inode_flag(F2FS_I(dir), FI_INLINE_DENTRY); + clear_inode_flag(dir, FI_INLINE_DENTRY); - F2FS_I(dir)->i_current_depth = 1; - if (i_size_read(dir) < PAGE_SIZE) { - i_size_write(dir, PAGE_SIZE); - set_inode_flag(F2FS_I(dir), FI_UPDATE_DIR); - } - - sync_inode_page(&dn); + f2fs_i_depth_write(dir, 1); + if (i_size_read(dir) < PAGE_SIZE) + f2fs_i_size_write(dir, PAGE_SIZE); out: f2fs_put_page(page, 1); return err; @@ -465,7 +443,6 @@ static int f2fs_move_rehashed_dirents(struct inode *dir, struct page *ipage, struct f2fs_inline_dentry *inline_dentry) { struct f2fs_inline_dentry *backup_dentry; - struct f2fs_inode_info *fi = F2FS_I(dir); int err; backup_dentry = f2fs_kmalloc(sizeof(struct f2fs_inline_dentry), @@ -487,16 +464,15 @@ static int f2fs_move_rehashed_dirents(struct inode *dir, struct page *ipage, lock_page(ipage); stat_dec_inline_dir(dir); - clear_inode_flag(fi, FI_INLINE_DENTRY); - update_inode(dir, ipage); + clear_inode_flag(dir, FI_INLINE_DENTRY); kfree(backup_dentry); return 0; recover: lock_page(ipage); memcpy(inline_dentry, backup_dentry, MAX_INLINE_DATA); - fi->i_current_depth = 0; - i_size_write(dir, MAX_INLINE_DATA); - update_inode(dir, ipage); + f2fs_i_depth_write(dir, 0); + f2fs_i_size_write(dir, MAX_INLINE_DATA); + set_page_dirty(ipage); f2fs_put_page(ipage, 1); kfree(backup_dentry); @@ -560,8 +536,7 @@ int f2fs_add_inline_entry(struct inode *dir, const struct qstr *name, /* we don't need to mark_inode_dirty now */ if (inode) { - F2FS_I(inode)->i_pino = dir->i_ino; - update_inode(inode, page); + f2fs_i_pino_write(inode, dir->i_ino); f2fs_put_page(page, 1); } @@ -569,11 +544,6 @@ int f2fs_add_inline_entry(struct inode *dir, const struct qstr *name, fail: if (inode) up_write(&F2FS_I(inode)->i_sem); - - if (is_inode_flag_set(F2FS_I(dir), FI_UPDATE_DIR)) { - update_inode(dir, ipage); - clear_inode_flag(F2FS_I(dir), FI_UPDATE_DIR); - } out: f2fs_put_page(ipage, 1); return err; @@ -597,13 +567,13 @@ void f2fs_delete_inline_entry(struct f2fs_dir_entry *dentry, struct page *page, &inline_dentry->dentry_bitmap); set_page_dirty(page); + f2fs_put_page(page, 1); dir->i_ctime = dir->i_mtime = CURRENT_TIME; + f2fs_mark_inode_dirty_sync(dir); if (inode) - f2fs_drop_nlink(dir, inode, page); - - f2fs_put_page(page, 1); + f2fs_drop_nlink(dir, inode); } bool f2fs_empty_inline_dir(struct inode *dir) diff --git a/fs/f2fs/inode.c b/fs/f2fs/inode.c index 2e68adab0d64..9ac5efc15347 100644 --- a/fs/f2fs/inode.c +++ b/fs/f2fs/inode.c @@ -18,6 +18,13 @@ #include <trace/events/f2fs.h> +void f2fs_mark_inode_dirty_sync(struct inode *inode) +{ + if (f2fs_inode_dirtied(inode)) + return; + mark_inode_dirty_sync(inode); +} + void f2fs_set_inode_flags(struct inode *inode) { unsigned int flags = F2FS_I(inode)->i_flags; @@ -35,6 +42,7 @@ void f2fs_set_inode_flags(struct inode *inode) new_fl |= S_DIRSYNC; inode_set_flags(inode, new_fl, S_SYNC|S_APPEND|S_IMMUTABLE|S_NOATIME|S_DIRSYNC); + f2fs_mark_inode_dirty_sync(inode); } static void __get_inode_rdev(struct inode *inode, struct f2fs_inode *ri) @@ -85,8 +93,8 @@ static void __recover_inline_status(struct inode *inode, struct page *ipage) if (*start++) { f2fs_wait_on_page_writeback(ipage, NODE, true); - set_inode_flag(F2FS_I(inode), FI_DATA_EXIST); - set_raw_inline(F2FS_I(inode), F2FS_INODE(ipage)); + set_inode_flag(inode, FI_DATA_EXIST); + set_raw_inline(inode, F2FS_INODE(ipage)); set_page_dirty(ipage); return; } @@ -141,7 +149,7 @@ static int do_read_inode(struct inode *inode) if (f2fs_init_extent_tree(inode, &ri->i_ext)) set_page_dirty(node_page); - get_inline_info(fi, ri); + get_inline_info(inode, ri); /* check data exist */ if (f2fs_has_inline_data(inode) && !f2fs_exist_data(inode)) @@ -151,7 +159,10 @@ static int do_read_inode(struct inode *inode) __get_inode_rdev(inode, ri); if (__written_first_block(ri)) - set_inode_flag(F2FS_I(inode), FI_FIRST_BLOCK_WRITTEN); + set_inode_flag(inode, FI_FIRST_BLOCK_WRITTEN); + + if (!need_inode_block_update(sbi, inode->i_ino)) + fi->last_disk_size = inode->i_size; f2fs_put_page(node_page, 1); @@ -227,6 +238,8 @@ int update_inode(struct inode *inode, struct page *node_page) { struct f2fs_inode *ri; + f2fs_inode_synced(inode); + f2fs_wait_on_page_writeback(node_page, NODE, true); ri = F2FS_INODE(node_page); @@ -244,7 +257,7 @@ int update_inode(struct inode *inode, struct page *node_page) &ri->i_ext); else memset(&ri->i_ext, 0, sizeof(ri->i_ext)); - set_raw_inline(F2FS_I(inode), ri); + 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); @@ -261,7 +274,6 @@ int update_inode(struct inode *inode, struct page *node_page) __set_inode_rdev(inode, ri); set_cold_node(inode, node_page); - clear_inode_flag(F2FS_I(inode), FI_DIRTY_INODE); /* deleted inode */ if (inode->i_nlink == 0) @@ -285,6 +297,7 @@ retry: } else if (err != -ENOENT) { f2fs_stop_checkpoint(sbi, false); } + f2fs_inode_synced(inode); return 0; } ret = update_inode(inode, node_page); @@ -300,7 +313,7 @@ int f2fs_write_inode(struct inode *inode, struct writeback_control *wbc) inode->i_ino == F2FS_META_INO(sbi)) return 0; - if (!is_inode_flag_set(F2FS_I(inode), FI_DIRTY_INODE)) + if (!is_inode_flag_set(inode, FI_DIRTY_INODE)) return 0; /* @@ -318,8 +331,7 @@ int f2fs_write_inode(struct inode *inode, struct writeback_control *wbc) void f2fs_evict_inode(struct inode *inode) { struct f2fs_sb_info *sbi = F2FS_I_SB(inode); - struct f2fs_inode_info *fi = F2FS_I(inode); - nid_t xnid = fi->i_xattr_nid; + nid_t xnid = F2FS_I(inode)->i_xattr_nid; int err = 0; /* some remained atomic pages should discarded */ @@ -341,12 +353,17 @@ void f2fs_evict_inode(struct inode *inode) if (inode->i_nlink || is_bad_inode(inode)) goto no_delete; +#ifdef CONFIG_F2FS_FAULT_INJECTION + if (time_to_inject(FAULT_EVICT_INODE)) + goto no_delete; +#endif + sb_start_intwrite(inode->i_sb); - set_inode_flag(fi, FI_NO_ALLOC); + set_inode_flag(inode, FI_NO_ALLOC); i_size_write(inode, 0); retry: if (F2FS_HAS_BLOCKS(inode)) - err = f2fs_truncate(inode, true); + err = f2fs_truncate(inode); if (!err) { f2fs_lock_op(sbi); @@ -360,6 +377,8 @@ retry: goto retry; } + if (err) + update_inode_page(inode); sb_end_intwrite(inode->i_sb); no_delete: stat_dec_inline_xattr(inode); @@ -369,13 +388,13 @@ no_delete: invalidate_mapping_pages(NODE_MAPPING(sbi), inode->i_ino, inode->i_ino); if (xnid) invalidate_mapping_pages(NODE_MAPPING(sbi), xnid, xnid); - if (is_inode_flag_set(fi, FI_APPEND_WRITE)) + if (is_inode_flag_set(inode, FI_APPEND_WRITE)) add_ino_entry(sbi, inode->i_ino, APPEND_INO); - if (is_inode_flag_set(fi, FI_UPDATE_WRITE)) + if (is_inode_flag_set(inode, FI_UPDATE_WRITE)) add_ino_entry(sbi, inode->i_ino, UPDATE_INO); - if (is_inode_flag_set(fi, FI_FREE_NID)) { + if (is_inode_flag_set(inode, FI_FREE_NID)) { alloc_nid_failed(sbi, inode->i_ino); - clear_inode_flag(fi, FI_FREE_NID); + clear_inode_flag(inode, FI_FREE_NID); } f2fs_bug_on(sbi, err && !exist_written_data(sbi, inode->i_ino, ORPHAN_INO)); @@ -407,11 +426,11 @@ void handle_failed_inode(struct inode *inode) f2fs_msg(sbi->sb, KERN_WARNING, "Too many orphan inodes, run fsck to fix."); } else { - add_orphan_inode(sbi, inode->i_ino); + add_orphan_inode(inode); } alloc_nid_done(sbi, inode->i_ino); } else { - set_inode_flag(F2FS_I(inode), FI_FREE_NID); + set_inode_flag(inode, FI_FREE_NID); } f2fs_unlock_op(sbi); diff --git a/fs/f2fs/namei.c b/fs/f2fs/namei.c index 324ed3812f30..73fa356f8fbb 100644 --- a/fs/f2fs/namei.c +++ b/fs/f2fs/namei.c @@ -60,10 +60,14 @@ static struct inode *f2fs_new_inode(struct inode *dir, umode_t mode) if (f2fs_encrypted_inode(dir) && f2fs_may_encrypt(inode)) f2fs_set_encrypted_inode(inode); + set_inode_flag(inode, FI_NEW_INODE); + + if (test_opt(sbi, INLINE_XATTR)) + set_inode_flag(inode, FI_INLINE_XATTR); if (test_opt(sbi, INLINE_DATA) && f2fs_may_inline_data(inode)) - set_inode_flag(F2FS_I(inode), FI_INLINE_DATA); + set_inode_flag(inode, FI_INLINE_DATA); if (f2fs_may_inline_dentry(inode)) - set_inode_flag(F2FS_I(inode), FI_INLINE_DENTRY); + set_inode_flag(inode, FI_INLINE_DENTRY); f2fs_init_extent_tree(inode, NULL); @@ -72,14 +76,13 @@ static struct inode *f2fs_new_inode(struct inode *dir, umode_t mode) stat_inc_inline_dir(inode); trace_f2fs_new_inode(inode, 0); - mark_inode_dirty(inode); return inode; fail: trace_f2fs_new_inode(inode, err); make_bad_inode(inode); if (nid_free) - set_inode_flag(F2FS_I(inode), FI_FREE_NID); + set_inode_flag(inode, FI_FREE_NID); iput(inode); return ERR_PTR(err); } @@ -177,7 +180,7 @@ static int f2fs_link(struct dentry *old_dentry, struct inode *dir, inode->i_ctime = CURRENT_TIME; ihold(inode); - set_inode_flag(F2FS_I(inode), FI_INC_LINK); + set_inode_flag(inode, FI_INC_LINK); f2fs_lock_op(sbi); err = f2fs_add_link(dentry, inode); if (err) @@ -190,7 +193,7 @@ static int f2fs_link(struct dentry *old_dentry, struct inode *dir, f2fs_sync_fs(sbi->sb, 1); return 0; out: - clear_inode_flag(F2FS_I(inode), FI_INC_LINK); + clear_inode_flag(inode, FI_INC_LINK); iput(inode); f2fs_unlock_op(sbi); return err; @@ -199,9 +202,13 @@ out: struct dentry *f2fs_get_parent(struct dentry *child) { struct qstr dotdot = QSTR_INIT("..", 2); - unsigned long ino = f2fs_inode_by_name(d_inode(child), &dotdot); - if (!ino) + struct page *page; + unsigned long ino = f2fs_inode_by_name(d_inode(child), &dotdot, &page); + if (!ino) { + if (IS_ERR(page)) + return ERR_CAST(page); return ERR_PTR(-ENOENT); + } return d_obtain_alias(f2fs_iget(child->d_sb, ino)); } @@ -229,6 +236,9 @@ static int __recover_dot_dentries(struct inode *dir, nid_t pino) if (de) { f2fs_dentry_kunmap(dir, page); f2fs_put_page(page, 0); + } else if (IS_ERR(page)) { + err = PTR_ERR(page); + goto out; } else { err = __f2fs_add_link(dir, &dot, NULL, dir->i_ino, S_IFDIR); if (err) @@ -239,14 +249,14 @@ static int __recover_dot_dentries(struct inode *dir, nid_t pino) if (de) { f2fs_dentry_kunmap(dir, page); f2fs_put_page(page, 0); + } else if (IS_ERR(page)) { + err = PTR_ERR(page); } else { err = __f2fs_add_link(dir, &dotdot, NULL, pino, S_IFDIR); } out: - if (!err) { - clear_inode_flag(F2FS_I(dir), FI_INLINE_DOTS); - mark_inode_dirty(dir); - } + if (!err) + clear_inode_flag(dir, FI_INLINE_DOTS); f2fs_unlock_op(sbi); return err; @@ -281,8 +291,11 @@ static struct dentry *f2fs_lookup(struct inode *dir, struct dentry *dentry, return ERR_PTR(-ENAMETOOLONG); de = f2fs_find_entry(dir, &dentry->d_name, &page); - if (!de) + if (!de) { + if (IS_ERR(page)) + return (struct dentry *)page; return d_splice_alias(inode, dentry); + } ino = le32_to_cpu(de->ino); f2fs_dentry_kunmap(dir, page); @@ -329,8 +342,11 @@ static int f2fs_unlink(struct inode *dir, struct dentry *dentry) trace_f2fs_unlink_enter(dir, dentry); de = f2fs_find_entry(dir, &dentry->d_name, &page); - if (!de) + if (!de) { + if (IS_ERR(page)) + err = PTR_ERR(page); goto fail; + } f2fs_balance_fs(sbi, true); @@ -345,9 +361,6 @@ static int f2fs_unlink(struct inode *dir, struct dentry *dentry) f2fs_delete_entry(de, page, dir, inode); f2fs_unlock_op(sbi); - /* In order to evict this inode, we set it dirty */ - mark_inode_dirty(inode); - if (IS_DIRSYNC(dir)) f2fs_sync_fs(sbi->sb, 1); fail: @@ -492,7 +505,7 @@ static int f2fs_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode) f2fs_balance_fs(sbi, true); - set_inode_flag(F2FS_I(inode), FI_INC_LINK); + set_inode_flag(inode, FI_INC_LINK); f2fs_lock_op(sbi); err = f2fs_add_link(dentry, inode); if (err) @@ -509,7 +522,7 @@ static int f2fs_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode) return 0; out_fail: - clear_inode_flag(F2FS_I(inode), FI_INC_LINK); + clear_inode_flag(inode, FI_INC_LINK); handle_failed_inode(inode); return err; } @@ -592,17 +605,17 @@ static int __f2fs_tmpfile(struct inode *dir, struct dentry *dentry, * add this non-linked tmpfile to orphan list, in this way we could * remove all unused data of tmpfile after abnormal power-off. */ - add_orphan_inode(sbi, inode->i_ino); - f2fs_unlock_op(sbi); - + add_orphan_inode(inode); alloc_nid_done(sbi, inode->i_ino); if (whiteout) { - inode_dec_link_count(inode); + f2fs_i_links_write(inode, false); *whiteout = inode; } else { d_tmpfile(dentry, inode); } + /* link_count was changed by d_tmpfile as well. */ + f2fs_unlock_op(sbi); unlock_new_inode(inode); return 0; @@ -652,14 +665,19 @@ static int f2fs_rename(struct inode *old_dir, struct dentry *old_dentry, } old_entry = f2fs_find_entry(old_dir, &old_dentry->d_name, &old_page); - if (!old_entry) + if (!old_entry) { + if (IS_ERR(old_page)) + err = PTR_ERR(old_page); goto out; + } if (S_ISDIR(old_inode->i_mode)) { - err = -EIO; old_dir_entry = f2fs_parent_dir(old_inode, &old_dir_page); - if (!old_dir_entry) + if (!old_dir_entry) { + if (IS_ERR(old_dir_page)) + err = PTR_ERR(old_dir_page); goto out_old; + } } if (flags & RENAME_WHITEOUT) { @@ -677,8 +695,11 @@ static int f2fs_rename(struct inode *old_dir, struct dentry *old_dentry, err = -ENOENT; new_entry = f2fs_find_entry(new_dir, &new_dentry->d_name, &new_page); - if (!new_entry) + if (!new_entry) { + if (IS_ERR(new_page)) + err = PTR_ERR(new_page); goto out_whiteout; + } f2fs_balance_fs(sbi, true); @@ -700,19 +721,14 @@ static int f2fs_rename(struct inode *old_dir, struct dentry *old_dentry, new_inode->i_ctime = CURRENT_TIME; down_write(&F2FS_I(new_inode)->i_sem); if (old_dir_entry) - drop_nlink(new_inode); - drop_nlink(new_inode); + f2fs_i_links_write(new_inode, false); + f2fs_i_links_write(new_inode, false); up_write(&F2FS_I(new_inode)->i_sem); - mark_inode_dirty(new_inode); - if (!new_inode->i_nlink) - add_orphan_inode(sbi, new_inode->i_ino); + add_orphan_inode(new_inode); else release_orphan_inode(sbi); - - update_inode_page(old_inode); - update_inode_page(new_inode); } else { f2fs_balance_fs(sbi, true); @@ -724,10 +740,8 @@ static int f2fs_rename(struct inode *old_dir, struct dentry *old_dentry, goto out_whiteout; } - if (old_dir_entry) { - inc_nlink(new_dir); - update_inode_page(new_dir); - } + if (old_dir_entry) + f2fs_i_links_write(new_dir, true); /* * old entry and new entry can locate in the same inline @@ -743,7 +757,9 @@ static int f2fs_rename(struct inode *old_dir, struct dentry *old_dentry, old_entry = f2fs_find_entry(old_dir, &old_dentry->d_name, &old_page); if (!old_entry) { - err = -EIO; + err = -ENOENT; + if (IS_ERR(old_page)) + err = PTR_ERR(old_page); f2fs_unlock_op(sbi); goto out_whiteout; } @@ -757,13 +773,13 @@ static int f2fs_rename(struct inode *old_dir, struct dentry *old_dentry, up_write(&F2FS_I(old_inode)->i_sem); old_inode->i_ctime = CURRENT_TIME; - mark_inode_dirty(old_inode); + f2fs_mark_inode_dirty_sync(old_inode); f2fs_delete_entry(old_entry, old_page, old_dir, NULL); if (whiteout) { whiteout->i_state |= I_LINKABLE; - set_inode_flag(F2FS_I(whiteout), FI_INC_LINK); + set_inode_flag(whiteout, FI_INC_LINK); err = f2fs_add_link(old_dentry, whiteout); if (err) goto put_out_dir; @@ -775,14 +791,11 @@ static int f2fs_rename(struct inode *old_dir, struct dentry *old_dentry, if (old_dir != new_dir && !whiteout) { f2fs_set_link(old_inode, old_dir_entry, old_dir_page, new_dir); - update_inode_page(old_inode); } else { f2fs_dentry_kunmap(old_inode, old_dir_page); f2fs_put_page(old_dir_page, 0); } - drop_nlink(old_dir); - mark_inode_dirty(old_dir); - update_inode_page(old_dir); + f2fs_i_links_write(old_dir, false); } f2fs_unlock_op(sbi); @@ -832,29 +845,39 @@ static int f2fs_cross_rename(struct inode *old_dir, struct dentry *old_dentry, return -EPERM; old_entry = f2fs_find_entry(old_dir, &old_dentry->d_name, &old_page); - if (!old_entry) + if (!old_entry) { + if (IS_ERR(old_page)) + err = PTR_ERR(old_page); goto out; + } new_entry = f2fs_find_entry(new_dir, &new_dentry->d_name, &new_page); - if (!new_entry) + if (!new_entry) { + if (IS_ERR(new_page)) + err = PTR_ERR(new_page); goto out_old; + } /* prepare for updating ".." directory entry info later */ if (old_dir != new_dir) { if (S_ISDIR(old_inode->i_mode)) { - err = -EIO; old_dir_entry = f2fs_parent_dir(old_inode, &old_dir_page); - if (!old_dir_entry) + if (!old_dir_entry) { + if (IS_ERR(old_dir_page)) + err = PTR_ERR(old_dir_page); goto out_new; + } } if (S_ISDIR(new_inode->i_mode)) { - err = -EIO; new_dir_entry = f2fs_parent_dir(new_inode, &new_dir_page); - if (!new_dir_entry) + if (!new_dir_entry) { + if (IS_ERR(new_dir_page)) + err = PTR_ERR(new_dir_page); goto out_old_dir; + } } } @@ -904,19 +927,13 @@ static int f2fs_cross_rename(struct inode *old_dir, struct dentry *old_dentry, file_lost_pino(old_inode); up_write(&F2FS_I(old_inode)->i_sem); - update_inode_page(old_inode); - old_dir->i_ctime = CURRENT_TIME; if (old_nlink) { down_write(&F2FS_I(old_dir)->i_sem); - if (old_nlink < 0) - drop_nlink(old_dir); - else - inc_nlink(old_dir); + f2fs_i_links_write(old_dir, old_nlink > 0); up_write(&F2FS_I(old_dir)->i_sem); } - mark_inode_dirty(old_dir); - update_inode_page(old_dir); + f2fs_mark_inode_dirty_sync(old_dir); /* update directory entry info of new dir inode */ f2fs_set_link(new_dir, new_entry, new_page, old_inode); @@ -925,19 +942,13 @@ static int f2fs_cross_rename(struct inode *old_dir, struct dentry *old_dentry, file_lost_pino(new_inode); up_write(&F2FS_I(new_inode)->i_sem); - update_inode_page(new_inode); - new_dir->i_ctime = CURRENT_TIME; if (new_nlink) { down_write(&F2FS_I(new_dir)->i_sem); - if (new_nlink < 0) - drop_nlink(new_dir); - else - inc_nlink(new_dir); + f2fs_i_links_write(new_dir, new_nlink > 0); up_write(&F2FS_I(new_dir)->i_sem); } - mark_inode_dirty(new_dir); - update_inode_page(new_dir); + f2fs_mark_inode_dirty_sync(new_dir); f2fs_unlock_op(sbi); diff --git a/fs/f2fs/node.c b/fs/f2fs/node.c index d1867698e601..b2fa4b615925 100644 --- a/fs/f2fs/node.c +++ b/fs/f2fs/node.c @@ -52,6 +52,10 @@ bool available_free_memory(struct f2fs_sb_info *sbi, int type) mem_size = (nm_i->nat_cnt * sizeof(struct nat_entry)) >> PAGE_SHIFT; res = mem_size < ((avail_ram * nm_i->ram_thresh / 100) >> 2); + if (excess_cached_nats(sbi)) + res = false; + if (nm_i->nat_cnt > DEF_NAT_CACHE_THRESHOLD) + res = false; } else if (type == DIRTY_DENTS) { if (sbi->sb->s_bdi->wb.dirty_exceeded) return false; @@ -202,14 +206,14 @@ int need_dentry_mark(struct f2fs_sb_info *sbi, nid_t nid) struct nat_entry *e; bool need = false; - down_read(&nm_i->nat_tree_lock); + percpu_down_read(&nm_i->nat_tree_lock); e = __lookup_nat_cache(nm_i, nid); if (e) { if (!get_nat_flag(e, IS_CHECKPOINTED) && !get_nat_flag(e, HAS_FSYNCED_INODE)) need = true; } - up_read(&nm_i->nat_tree_lock); + percpu_up_read(&nm_i->nat_tree_lock); return need; } @@ -219,11 +223,11 @@ bool is_checkpointed_node(struct f2fs_sb_info *sbi, nid_t nid) struct nat_entry *e; bool is_cp = true; - down_read(&nm_i->nat_tree_lock); + percpu_down_read(&nm_i->nat_tree_lock); e = __lookup_nat_cache(nm_i, nid); if (e && !get_nat_flag(e, IS_CHECKPOINTED)) is_cp = false; - up_read(&nm_i->nat_tree_lock); + percpu_up_read(&nm_i->nat_tree_lock); return is_cp; } @@ -233,13 +237,13 @@ bool need_inode_block_update(struct f2fs_sb_info *sbi, nid_t ino) struct nat_entry *e; bool need_update = true; - down_read(&nm_i->nat_tree_lock); + percpu_down_read(&nm_i->nat_tree_lock); e = __lookup_nat_cache(nm_i, ino); if (e && get_nat_flag(e, HAS_LAST_FSYNC) && (get_nat_flag(e, IS_CHECKPOINTED) || get_nat_flag(e, HAS_FSYNCED_INODE))) need_update = false; - up_read(&nm_i->nat_tree_lock); + percpu_up_read(&nm_i->nat_tree_lock); return need_update; } @@ -280,7 +284,7 @@ static void set_node_addr(struct f2fs_sb_info *sbi, struct node_info *ni, struct f2fs_nm_info *nm_i = NM_I(sbi); struct nat_entry *e; - down_write(&nm_i->nat_tree_lock); + percpu_down_write(&nm_i->nat_tree_lock); e = __lookup_nat_cache(nm_i, ni->nid); if (!e) { e = grab_nat_entry(nm_i, ni->nid); @@ -330,7 +334,7 @@ static void set_node_addr(struct f2fs_sb_info *sbi, struct node_info *ni, set_nat_flag(e, HAS_FSYNCED_INODE, true); set_nat_flag(e, HAS_LAST_FSYNC, fsync_done); } - up_write(&nm_i->nat_tree_lock); + percpu_up_write(&nm_i->nat_tree_lock); } int try_to_free_nats(struct f2fs_sb_info *sbi, int nr_shrink) @@ -338,8 +342,7 @@ int try_to_free_nats(struct f2fs_sb_info *sbi, int nr_shrink) struct f2fs_nm_info *nm_i = NM_I(sbi); int nr = nr_shrink; - if (!down_write_trylock(&nm_i->nat_tree_lock)) - return 0; + percpu_down_write(&nm_i->nat_tree_lock); while (nr_shrink && !list_empty(&nm_i->nat_entries)) { struct nat_entry *ne; @@ -348,7 +351,7 @@ int try_to_free_nats(struct f2fs_sb_info *sbi, int nr_shrink) __del_from_nat_cache(nm_i, ne); nr_shrink--; } - up_write(&nm_i->nat_tree_lock); + percpu_up_write(&nm_i->nat_tree_lock); return nr - nr_shrink; } @@ -370,13 +373,13 @@ void get_node_info(struct f2fs_sb_info *sbi, nid_t nid, struct node_info *ni) ni->nid = nid; /* Check nat cache */ - down_read(&nm_i->nat_tree_lock); + percpu_down_read(&nm_i->nat_tree_lock); e = __lookup_nat_cache(nm_i, nid); if (e) { ni->ino = nat_get_ino(e); ni->blk_addr = nat_get_blkaddr(e); ni->version = nat_get_version(e); - up_read(&nm_i->nat_tree_lock); + percpu_up_read(&nm_i->nat_tree_lock); return; } @@ -400,11 +403,11 @@ void get_node_info(struct f2fs_sb_info *sbi, nid_t nid, struct node_info *ni) node_info_from_raw_nat(ni, &ne); f2fs_put_page(page, 1); cache: - up_read(&nm_i->nat_tree_lock); + percpu_up_read(&nm_i->nat_tree_lock); /* cache nat entry */ - down_write(&nm_i->nat_tree_lock); + percpu_down_write(&nm_i->nat_tree_lock); cache_nat_entry(sbi, nid, &ne); - up_write(&nm_i->nat_tree_lock); + percpu_up_write(&nm_i->nat_tree_lock); } /* @@ -646,6 +649,7 @@ release_out: if (err == -ENOENT) { dn->cur_level = i; dn->max_level = level; + dn->ofs_in_node = offset[level]; } return err; } @@ -670,8 +674,7 @@ static void truncate_node(struct dnode_of_data *dn) if (dn->nid == dn->inode->i_ino) { remove_orphan_inode(sbi, dn->nid); dec_valid_inode_count(sbi); - } else { - sync_inode_page(dn); + f2fs_inode_synced(dn->inode); } invalidate: clear_node_page_dirty(dn->node_page); @@ -953,7 +956,7 @@ int truncate_xattr_node(struct inode *inode, struct page *page) if (IS_ERR(npage)) return PTR_ERR(npage); - F2FS_I(inode)->i_xattr_nid = 0; + f2fs_i_xnid_write(inode, 0); /* need to do checkpoint during fsync */ F2FS_I(inode)->xattr_ver = cur_cp_version(F2FS_CKPT(sbi)); @@ -1019,7 +1022,7 @@ struct page *new_node_page(struct dnode_of_data *dn, struct page *page; int err; - if (unlikely(is_inode_flag_set(F2FS_I(dn->inode), FI_NO_ALLOC))) + if (unlikely(is_inode_flag_set(dn->inode, FI_NO_ALLOC))) return ERR_PTR(-EPERM); page = f2fs_grab_cache_page(NODE_MAPPING(sbi), dn->nid, false); @@ -1042,21 +1045,16 @@ struct page *new_node_page(struct dnode_of_data *dn, f2fs_wait_on_page_writeback(page, NODE, true); fill_node_footer(page, dn->nid, dn->inode->i_ino, ofs, true); set_cold_node(dn->inode, page); - SetPageUptodate(page); + if (!PageUptodate(page)) + SetPageUptodate(page); if (set_page_dirty(page)) dn->node_changed = true; if (f2fs_has_xattr_block(ofs)) - F2FS_I(dn->inode)->i_xattr_nid = dn->nid; + f2fs_i_xnid_write(dn->inode, dn->nid); - dn->node_page = page; - if (ipage) - update_inode(dn->inode, ipage); - else - sync_inode_page(dn); if (ofs == 0) inc_valid_inode_count(sbi); - return page; fail: @@ -1083,6 +1081,9 @@ static int read_node_page(struct page *page, int op_flags) .encrypted_page = NULL, }; + if (PageUptodate(page)) + return LOCKED_PAGE; + get_node_info(sbi, page->index, &ni); if (unlikely(ni.blk_addr == NULL_ADDR)) { @@ -1090,9 +1091,6 @@ static int read_node_page(struct page *page, int op_flags) return -ENOENT; } - if (PageUptodate(page)) - return LOCKED_PAGE; - fio.new_blkaddr = fio.old_blkaddr = ni.blk_addr; return f2fs_submit_page_bio(&fio); } @@ -1150,16 +1148,21 @@ repeat: lock_page(page); - if (unlikely(!PageUptodate(page))) { - f2fs_put_page(page, 1); - return ERR_PTR(-EIO); - } if (unlikely(page->mapping != NODE_MAPPING(sbi))) { f2fs_put_page(page, 1); goto repeat; } + + if (unlikely(!PageUptodate(page))) + goto out_err; page_hit: - f2fs_bug_on(sbi, nid != nid_of_node(page)); + if(unlikely(nid != nid_of_node(page))) { + f2fs_bug_on(sbi, 1); + ClearPageUptodate(page); +out_err: + f2fs_put_page(page, 1); + return ERR_PTR(-EIO); + } return page; } @@ -1176,24 +1179,6 @@ struct page *get_node_page_ra(struct page *parent, int start) return __get_node_page(sbi, nid, parent, start); } -void sync_inode_page(struct dnode_of_data *dn) -{ - int ret = 0; - - if (IS_INODE(dn->node_page) || dn->inode_page == dn->node_page) { - ret = update_inode(dn->inode, dn->node_page); - } else if (dn->inode_page) { - if (!dn->inode_page_locked) - lock_page(dn->inode_page); - ret = update_inode(dn->inode, dn->inode_page); - if (!dn->inode_page_locked) - unlock_page(dn->inode_page); - } else { - ret = update_inode_page(dn->inode); - } - dn->node_changed = ret ? true: false; -} - static void flush_inline_data(struct f2fs_sb_info *sbi, nid_t ino) { struct inode *inode; @@ -1319,7 +1304,7 @@ continue_unlock: return last_page; } -int fsync_node_pages(struct f2fs_sb_info *sbi, nid_t ino, +int fsync_node_pages(struct f2fs_sb_info *sbi, struct inode *inode, struct writeback_control *wbc, bool atomic) { pgoff_t index, end; @@ -1327,6 +1312,7 @@ int fsync_node_pages(struct f2fs_sb_info *sbi, nid_t ino, int ret = 0; struct page *last_page = NULL; bool marked = false; + nid_t ino = inode->i_ino; if (atomic) { last_page = last_fsync_dnode(sbi, ino); @@ -1380,9 +1366,13 @@ continue_unlock: if (!atomic || page == last_page) { set_fsync_mark(page, 1); - if (IS_INODE(page)) + if (IS_INODE(page)) { + if (is_inode_flag_set(inode, + FI_DIRTY_INODE)) + update_inode(inode, page); set_dentry_mark(page, need_dentry_mark(sbi, ino)); + } /* may be written by other thread */ if (!PageDirty(page)) set_page_dirty(page); @@ -1630,6 +1620,7 @@ static int f2fs_write_node_pages(struct address_space *mapping, struct writeback_control *wbc) { struct f2fs_sb_info *sbi = F2FS_M_SB(mapping); + struct blk_plug plug; long diff; /* balancing f2fs's metadata in background */ @@ -1643,7 +1634,9 @@ static int f2fs_write_node_pages(struct address_space *mapping, diff = nr_pages_to_write(sbi, NODE, wbc); wbc->sync_mode = WB_SYNC_NONE; + blk_start_plug(&plug); sync_node_pages(sbi, wbc); + blk_finish_plug(&plug); wbc->nr_to_write = max((long)0, wbc->nr_to_write - diff); return 0; @@ -1657,9 +1650,10 @@ static int f2fs_set_node_page_dirty(struct page *page) { trace_f2fs_set_page_dirty(page, NODE); - SetPageUptodate(page); + if (!PageUptodate(page)) + SetPageUptodate(page); if (!PageDirty(page)) { - __set_page_dirty_nobuffers(page); + f2fs_set_page_dirty_nobuffers(page); inc_page_count(F2FS_P_SB(page), F2FS_DIRTY_NODES); SetPagePrivate(page); f2fs_trace_pid(page); @@ -1778,7 +1772,7 @@ static void scan_nat_page(struct f2fs_sb_info *sbi, } } -static void build_free_nids(struct f2fs_sb_info *sbi) +void build_free_nids(struct f2fs_sb_info *sbi) { struct f2fs_nm_info *nm_i = NM_I(sbi); struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); @@ -1787,14 +1781,14 @@ static void build_free_nids(struct f2fs_sb_info *sbi) nid_t nid = nm_i->next_scan_nid; /* Enough entries */ - if (nm_i->fcnt > NAT_ENTRY_PER_BLOCK) + if (nm_i->fcnt >= NAT_ENTRY_PER_BLOCK) return; /* readahead nat pages to be scanned */ ra_meta_pages(sbi, NAT_BLOCK_OFFSET(nid), FREE_NID_PAGES, META_NAT, true); - down_read(&nm_i->nat_tree_lock); + percpu_down_read(&nm_i->nat_tree_lock); while (1) { struct page *page = get_current_nat_page(sbi, nid); @@ -1826,7 +1820,7 @@ static void build_free_nids(struct f2fs_sb_info *sbi) remove_free_nid(nm_i, nid); } up_read(&curseg->journal_rwsem); - up_read(&nm_i->nat_tree_lock); + percpu_up_read(&nm_i->nat_tree_lock); ra_meta_pages(sbi, NAT_BLOCK_OFFSET(nm_i->next_scan_nid), nm_i->ra_nid_pages, META_NAT, false); @@ -1925,12 +1919,15 @@ int try_to_free_nids(struct f2fs_sb_info *sbi, int nr_shrink) struct free_nid *i, *next; int nr = nr_shrink; + if (nm_i->fcnt <= MAX_FREE_NIDS) + return 0; + if (!mutex_trylock(&nm_i->build_lock)) return 0; spin_lock(&nm_i->free_nid_list_lock); list_for_each_entry_safe(i, next, &nm_i->free_nid_list, list) { - if (nr_shrink <= 0 || nm_i->fcnt <= NAT_ENTRY_PER_BLOCK) + if (nr_shrink <= 0 || nm_i->fcnt <= MAX_FREE_NIDS) break; if (i->state == NID_ALLOC) continue; @@ -1957,7 +1954,7 @@ void recover_inline_xattr(struct inode *inode, struct page *page) ri = F2FS_INODE(page); if (!(ri->i_inline & F2FS_INLINE_XATTR)) { - clear_inode_flag(F2FS_I(inode), FI_INLINE_XATTR); + clear_inode_flag(inode, FI_INLINE_XATTR); goto update_inode; } @@ -1999,13 +1996,11 @@ recover_xnid: get_node_info(sbi, new_xnid, &ni); ni.ino = inode->i_ino; set_node_addr(sbi, &ni, NEW_ADDR, false); - F2FS_I(inode)->i_xattr_nid = new_xnid; + f2fs_i_xnid_write(inode, new_xnid); /* 3: update xattr blkaddr */ refresh_sit_entry(sbi, NEW_ADDR, blkaddr); set_node_addr(sbi, &ni, blkaddr, false); - - update_inode_page(inode); } int recover_inode_page(struct f2fs_sb_info *sbi, struct page *page) @@ -2027,7 +2022,8 @@ int recover_inode_page(struct f2fs_sb_info *sbi, struct page *page) /* Should not use this inode from free nid list */ remove_free_nid(NM_I(sbi), ino); - SetPageUptodate(ipage); + if (!PageUptodate(ipage)) + SetPageUptodate(ipage); fill_node_footer(ipage, ino, ino, 0, true); src = F2FS_INODE(page); @@ -2213,7 +2209,7 @@ void flush_nat_entries(struct f2fs_sb_info *sbi) if (!nm_i->dirty_nat_cnt) return; - down_write(&nm_i->nat_tree_lock); + percpu_down_write(&nm_i->nat_tree_lock); /* * if there are no enough space in journal to store dirty nat @@ -2236,7 +2232,7 @@ void flush_nat_entries(struct f2fs_sb_info *sbi) list_for_each_entry_safe(set, tmp, &sets, set_list) __flush_nat_entry_set(sbi, set); - up_write(&nm_i->nat_tree_lock); + percpu_up_write(&nm_i->nat_tree_lock); f2fs_bug_on(sbi, nm_i->dirty_nat_cnt); } @@ -2272,7 +2268,8 @@ static int init_node_manager(struct f2fs_sb_info *sbi) mutex_init(&nm_i->build_lock); spin_lock_init(&nm_i->free_nid_list_lock); - init_rwsem(&nm_i->nat_tree_lock); + if (percpu_init_rwsem(&nm_i->nat_tree_lock)) + return -ENOMEM; nm_i->next_scan_nid = le32_to_cpu(sbi->ckpt->next_free_nid); nm_i->bitmap_size = __bitmap_size(sbi, NAT_BITMAP); @@ -2329,7 +2326,7 @@ void destroy_node_manager(struct f2fs_sb_info *sbi) spin_unlock(&nm_i->free_nid_list_lock); /* destroy nat cache */ - down_write(&nm_i->nat_tree_lock); + percpu_down_write(&nm_i->nat_tree_lock); while ((found = __gang_lookup_nat_cache(nm_i, nid, NATVEC_SIZE, natvec))) { unsigned idx; @@ -2354,8 +2351,9 @@ void destroy_node_manager(struct f2fs_sb_info *sbi) kmem_cache_free(nat_entry_set_slab, setvec[idx]); } } - up_write(&nm_i->nat_tree_lock); + percpu_up_write(&nm_i->nat_tree_lock); + percpu_free_rwsem(&nm_i->nat_tree_lock); kfree(nm_i->nat_bitmap); sbi->nm_info = NULL; kfree(nm_i); diff --git a/fs/f2fs/node.h b/fs/f2fs/node.h index 1f4f9d4569d9..fc7684554b1a 100644 --- a/fs/f2fs/node.h +++ b/fs/f2fs/node.h @@ -15,18 +15,21 @@ #define NAT_BLOCK_OFFSET(start_nid) (start_nid / NAT_ENTRY_PER_BLOCK) /* # of pages to perform synchronous readahead before building free nids */ -#define FREE_NID_PAGES 4 +#define FREE_NID_PAGES 8 +#define MAX_FREE_NIDS (NAT_ENTRY_PER_BLOCK * FREE_NID_PAGES) -#define DEF_RA_NID_PAGES 4 /* # of nid pages to be readaheaded */ +#define DEF_RA_NID_PAGES 0 /* # of nid pages to be readaheaded */ /* maximum readahead size for node during getting data blocks */ #define MAX_RA_NODE 128 /* control the memory footprint threshold (10MB per 1GB ram) */ -#define DEF_RAM_THRESHOLD 10 +#define DEF_RAM_THRESHOLD 1 /* control dirty nats ratio threshold (default: 10% over max nid count) */ #define DEF_DIRTY_NAT_RATIO_THRESHOLD 10 +/* control total # of nats */ +#define DEF_NAT_CACHE_THRESHOLD 100000 /* vector size for gang look-up from nat cache that consists of radix tree */ #define NATVEC_SIZE 64 @@ -126,6 +129,11 @@ static inline bool excess_dirty_nats(struct f2fs_sb_info *sbi) NM_I(sbi)->dirty_nats_ratio / 100; } +static inline bool excess_cached_nats(struct f2fs_sb_info *sbi) +{ + return NM_I(sbi)->nat_cnt >= DEF_NAT_CACHE_THRESHOLD; +} + enum mem_type { FREE_NIDS, /* indicates the free nid list */ NAT_ENTRIES, /* indicates the cached nat entry */ diff --git a/fs/f2fs/recovery.c b/fs/f2fs/recovery.c index 3d7216d7a288..9e652d5a659b 100644 --- a/fs/f2fs/recovery.c +++ b/fs/f2fs/recovery.c @@ -153,9 +153,12 @@ retry: f2fs_delete_entry(de, page, dir, einode); iput(einode); goto retry; + } else if (IS_ERR(page)) { + err = PTR_ERR(page); + } else { + err = __f2fs_add_link(dir, &name, inode, + inode->i_ino, inode->i_mode); } - err = __f2fs_add_link(dir, &name, inode, inode->i_ino, inode->i_mode); - goto out; out_unmap_put: @@ -175,7 +178,7 @@ static void recover_inode(struct inode *inode, struct page *page) char *name; inode->i_mode = le16_to_cpu(raw->i_mode); - i_size_write(inode, le64_to_cpu(raw->i_size)); + f2fs_i_size_write(inode, le64_to_cpu(raw->i_size)); inode->i_atime.tv_sec = le64_to_cpu(raw->i_mtime); inode->i_ctime.tv_sec = le64_to_cpu(raw->i_ctime); inode->i_mtime.tv_sec = le64_to_cpu(raw->i_mtime); @@ -455,6 +458,9 @@ static int do_recover_data(struct f2fs_sb_info *sbi, struct inode *inode, continue; } + if ((start + 1) << PAGE_SHIFT > i_size_read(inode)) + f2fs_i_size_write(inode, (start + 1) << PAGE_SHIFT); + /* * dest is reserved block, invalidate src block * and then reserve one new block in dnode page. @@ -476,6 +482,8 @@ static int do_recover_data(struct f2fs_sb_info *sbi, struct inode *inode, #endif /* We should not get -ENOSPC */ f2fs_bug_on(sbi, err); + if (err) + goto err; } /* Check the previous node page having this index */ @@ -490,9 +498,6 @@ static int do_recover_data(struct f2fs_sb_info *sbi, struct inode *inode, } } - if (IS_INODE(dn.node_page)) - sync_inode_page(&dn); - copy_node_footer(dn.node_page, page); fill_node_footer(dn.node_page, dn.nid, ni.ino, ofs_of_node(page), false); @@ -624,8 +629,12 @@ out: if (err) { bool invalidate = false; - if (discard_next_dnode(sbi, blkaddr)) + if (test_opt(sbi, LFS)) { + update_meta_page(sbi, NULL, blkaddr); + invalidate = true; + } else if (discard_next_dnode(sbi, blkaddr)) { invalidate = true; + } /* Flush all the NAT/SIT pages */ while (get_pages(sbi, F2FS_DIRTY_META)) diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c index 4c2d1fa1e0e2..a46296f57b02 100644 --- a/fs/f2fs/segment.c +++ b/fs/f2fs/segment.c @@ -241,7 +241,7 @@ void drop_inmem_pages(struct inode *inode) { struct f2fs_inode_info *fi = F2FS_I(inode); - clear_inode_flag(F2FS_I(inode), FI_ATOMIC_FILE); + clear_inode_flag(inode, FI_ATOMIC_FILE); mutex_lock(&fi->inmem_lock); __revoke_inmem_pages(inode, &fi->inmem_pages, true, false); @@ -346,6 +346,11 @@ void f2fs_balance_fs(struct f2fs_sb_info *sbi, bool need) { if (!need) return; + + /* balance_fs_bg is able to be pending */ + if (excess_cached_nats(sbi)) + f2fs_balance_fs_bg(sbi); + /* * We should do GC or end up with checkpoint, if there are so many dirty * dir/node pages without enough free segments. @@ -367,7 +372,9 @@ void f2fs_balance_fs_bg(struct f2fs_sb_info *sbi) try_to_free_nats(sbi, NAT_ENTRY_PER_BLOCK); if (!available_free_memory(sbi, FREE_NIDS)) - try_to_free_nids(sbi, NAT_ENTRY_PER_BLOCK * FREE_NID_PAGES); + try_to_free_nids(sbi, MAX_FREE_NIDS); + else + build_free_nids(sbi); /* checkpoint is the only way to shrink partial cached entries */ if (!available_free_memory(sbi, NAT_ENTRIES) || @@ -435,25 +442,29 @@ int f2fs_issue_flush(struct f2fs_sb_info *sbi) if (test_opt(sbi, NOBARRIER)) return 0; - if (!test_opt(sbi, FLUSH_MERGE)) { + if (!test_opt(sbi, FLUSH_MERGE) || !atomic_read(&fcc->submit_flush)) { struct bio *bio = f2fs_bio_alloc(0); int ret; + atomic_inc(&fcc->submit_flush); bio->bi_bdev = sbi->sb->s_bdev; bio_set_op_attrs(bio, REQ_OP_WRITE, WRITE_FLUSH); ret = submit_bio_wait(bio); + atomic_dec(&fcc->submit_flush); bio_put(bio); return ret; } init_completion(&cmd.wait); + atomic_inc(&fcc->submit_flush); llist_add(&cmd.llnode, &fcc->issue_list); if (!fcc->dispatch_list) wake_up(&fcc->flush_wait_queue); wait_for_completion(&cmd.wait); + atomic_dec(&fcc->submit_flush); return cmd.ret; } @@ -467,6 +478,7 @@ int create_flush_cmd_control(struct f2fs_sb_info *sbi) fcc = kzalloc(sizeof(struct flush_cmd_control), GFP_KERNEL); if (!fcc) return -ENOMEM; + atomic_set(&fcc->submit_flush, 0); init_waitqueue_head(&fcc->flush_wait_queue); init_llist_head(&fcc->issue_list); SM_I(sbi)->cmd_control_info = fcc; @@ -668,6 +680,10 @@ static void add_discard_addrs(struct f2fs_sb_info *sbi, struct cp_control *cpc) break; end = __find_rev_next_zero_bit(dmap, max_blocks, start + 1); + if (force && start && end != max_blocks + && (end - start) < cpc->trim_minlen) + continue; + __add_discard_entry(sbi, cpc, se, start, end); } } @@ -705,6 +721,8 @@ void clear_prefree_segments(struct f2fs_sb_info *sbi, struct cp_control *cpc) struct dirty_seglist_info *dirty_i = DIRTY_I(sbi); unsigned long *prefree_map = dirty_i->dirty_segmap[PRE]; unsigned int start = 0, end = -1; + unsigned int secno, start_segno; + bool force = (cpc->reason == CP_DISCARD); mutex_lock(&dirty_i->seglist_lock); @@ -721,17 +739,31 @@ void clear_prefree_segments(struct f2fs_sb_info *sbi, struct cp_control *cpc) dirty_i->nr_dirty[PRE] -= end - start; - if (!test_opt(sbi, DISCARD)) + if (force || !test_opt(sbi, DISCARD)) continue; - f2fs_issue_discard(sbi, START_BLOCK(sbi, start), + if (!test_opt(sbi, LFS) || sbi->segs_per_sec == 1) { + f2fs_issue_discard(sbi, START_BLOCK(sbi, start), (end - start) << sbi->log_blocks_per_seg); + continue; + } +next: + secno = GET_SECNO(sbi, start); + start_segno = secno * sbi->segs_per_sec; + if (!IS_CURSEC(sbi, secno) && + !get_valid_blocks(sbi, start, sbi->segs_per_sec)) + f2fs_issue_discard(sbi, START_BLOCK(sbi, start_segno), + sbi->segs_per_sec << sbi->log_blocks_per_seg); + + start = start_segno + sbi->segs_per_sec; + if (start < end) + goto next; } mutex_unlock(&dirty_i->seglist_lock); /* send small discards */ list_for_each_entry_safe(entry, this, head, list) { - if (cpc->reason == CP_DISCARD && entry->len < cpc->trim_minlen) + if (force && entry->len < cpc->trim_minlen) goto skip; f2fs_issue_discard(sbi, entry->blkaddr, entry->len); cpc->trimmed += entry->len; @@ -1219,6 +1251,9 @@ void allocate_new_segments(struct f2fs_sb_info *sbi) { int i; + if (test_opt(sbi, LFS)) + return; + for (i = CURSEG_HOT_DATA; i <= CURSEG_COLD_DATA; i++) __allocate_new_segments(sbi, i); } @@ -1392,11 +1427,17 @@ static void do_write_page(struct f2fs_summary *sum, struct f2fs_io_info *fio) { int type = __get_segment_type(fio->page, fio->type); + if (fio->type == NODE || fio->type == DATA) + mutex_lock(&fio->sbi->wio_mutex[fio->type]); + allocate_data_block(fio->sbi, fio->page, fio->old_blkaddr, &fio->new_blkaddr, sum, type); /* writeout dirty page into bdev */ f2fs_submit_page_mbio(fio); + + if (fio->type == NODE || fio->type == DATA) + mutex_unlock(&fio->sbi->wio_mutex[fio->type]); } void write_meta_page(struct f2fs_sb_info *sbi, struct page *page) @@ -2377,7 +2418,11 @@ int build_segment_manager(struct f2fs_sb_info *sbi) sm_info->ssa_blkaddr = le32_to_cpu(raw_super->ssa_blkaddr); sm_info->rec_prefree_segments = sm_info->main_segments * DEF_RECLAIM_PREFREE_SEGMENTS / 100; - sm_info->ipu_policy = 1 << F2FS_IPU_FSYNC; + if (sm_info->rec_prefree_segments > DEF_MAX_RECLAIM_PREFREE_SEGMENTS) + sm_info->rec_prefree_segments = DEF_MAX_RECLAIM_PREFREE_SEGMENTS; + + if (!test_opt(sbi, LFS)) + sm_info->ipu_policy = 1 << F2FS_IPU_FSYNC; sm_info->min_ipu_util = DEF_MIN_IPU_UTIL; sm_info->min_fsync_blocks = DEF_MIN_FSYNC_BLOCKS; diff --git a/fs/f2fs/segment.h b/fs/f2fs/segment.h index 7a756ff5a36d..b33f73ec60a4 100644 --- a/fs/f2fs/segment.h +++ b/fs/f2fs/segment.h @@ -16,6 +16,7 @@ #define NULL_SECNO ((unsigned int)(~0)) #define DEF_RECLAIM_PREFREE_SEGMENTS 5 /* 5% over total segments */ +#define DEF_MAX_RECLAIM_PREFREE_SEGMENTS 4096 /* 8GB in maximum */ /* L: Logical segment # in volume, R: Relative segment # in main area */ #define GET_L2R_SEGNO(free_i, segno) (segno - free_i->start_segno) @@ -470,6 +471,10 @@ static inline bool need_SSR(struct f2fs_sb_info *sbi) { int node_secs = get_blocktype_secs(sbi, F2FS_DIRTY_NODES); int dent_secs = get_blocktype_secs(sbi, F2FS_DIRTY_DENTS); + + if (test_opt(sbi, LFS)) + return false; + return free_sections(sbi) <= (node_secs + 2 * dent_secs + reserved_sections(sbi) + 1); } @@ -479,6 +484,8 @@ static inline bool has_not_enough_free_secs(struct f2fs_sb_info *sbi, int freed) int node_secs = get_blocktype_secs(sbi, F2FS_DIRTY_NODES); int dent_secs = get_blocktype_secs(sbi, F2FS_DIRTY_DENTS); + node_secs += get_blocktype_secs(sbi, F2FS_DIRTY_IMETA); + if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING))) return false; @@ -531,6 +538,9 @@ static inline bool need_inplace_update(struct inode *inode) if (S_ISDIR(inode->i_mode) || f2fs_is_atomic_file(inode)) return false; + if (test_opt(sbi, LFS)) + return false; + if (policy & (0x1 << F2FS_IPU_FORCE)) return true; if (policy & (0x1 << F2FS_IPU_SSR) && need_SSR(sbi)) @@ -544,7 +554,7 @@ static inline bool need_inplace_update(struct inode *inode) /* this is only set during fdatasync */ if (policy & (0x1 << F2FS_IPU_FSYNC) && - is_inode_flag_set(F2FS_I(inode), FI_NEED_IPU)) + is_inode_flag_set(inode, FI_NEED_IPU)) return true; return false; @@ -706,9 +716,9 @@ static inline int nr_pages_to_skip(struct f2fs_sb_info *sbi, int type) if (type == DATA) return sbi->blocks_per_seg; else if (type == NODE) - return 3 * sbi->blocks_per_seg; + return 8 * sbi->blocks_per_seg; else if (type == META) - return MAX_BIO_BLOCKS(sbi); + return 8 * MAX_BIO_BLOCKS(sbi); else return 0; } @@ -726,10 +736,8 @@ static inline long nr_pages_to_write(struct f2fs_sb_info *sbi, int type, nr_to_write = wbc->nr_to_write; - if (type == DATA) - desired = 4096; - else if (type == NODE) - desired = 3 * max_hw_blocks(sbi); + if (type == NODE) + desired = 2 * max_hw_blocks(sbi); else desired = MAX_BIO_BLOCKS(sbi); diff --git a/fs/f2fs/shrinker.c b/fs/f2fs/shrinker.c index 93606f281bf9..46c915425923 100644 --- a/fs/f2fs/shrinker.c +++ b/fs/f2fs/shrinker.c @@ -13,6 +13,7 @@ #include <linux/f2fs_fs.h> #include "f2fs.h" +#include "node.h" static LIST_HEAD(f2fs_list); static DEFINE_SPINLOCK(f2fs_list_lock); @@ -25,8 +26,8 @@ static unsigned long __count_nat_entries(struct f2fs_sb_info *sbi) static unsigned long __count_free_nids(struct f2fs_sb_info *sbi) { - if (NM_I(sbi)->fcnt > NAT_ENTRY_PER_BLOCK) - return NM_I(sbi)->fcnt - NAT_ENTRY_PER_BLOCK; + if (NM_I(sbi)->fcnt > MAX_FREE_NIDS) + return NM_I(sbi)->fcnt - MAX_FREE_NIDS; return 0; } diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c index 74cc8520b8b1..1b86d3f638ef 100644 --- a/fs/f2fs/super.c +++ b/fs/f2fs/super.c @@ -49,6 +49,7 @@ char *fault_name[FAULT_MAX] = { [FAULT_ORPHAN] = "orphan", [FAULT_BLOCK] = "no more block", [FAULT_DIR_DEPTH] = "too big dir depth", + [FAULT_EVICT_INODE] = "evict_inode fail", }; static void f2fs_build_fault_attr(unsigned int rate) @@ -75,6 +76,7 @@ enum { Opt_disable_roll_forward, Opt_norecovery, Opt_discard, + Opt_nodiscard, Opt_noheap, Opt_user_xattr, Opt_nouser_xattr, @@ -86,13 +88,17 @@ enum { Opt_inline_data, Opt_inline_dentry, Opt_flush_merge, + Opt_noflush_merge, Opt_nobarrier, Opt_fastboot, Opt_extent_cache, Opt_noextent_cache, Opt_noinline_data, Opt_data_flush, + Opt_mode, Opt_fault_injection, + Opt_lazytime, + Opt_nolazytime, Opt_err, }; @@ -101,6 +107,7 @@ static match_table_t f2fs_tokens = { {Opt_disable_roll_forward, "disable_roll_forward"}, {Opt_norecovery, "norecovery"}, {Opt_discard, "discard"}, + {Opt_nodiscard, "nodiscard"}, {Opt_noheap, "no_heap"}, {Opt_user_xattr, "user_xattr"}, {Opt_nouser_xattr, "nouser_xattr"}, @@ -112,13 +119,17 @@ static match_table_t f2fs_tokens = { {Opt_inline_data, "inline_data"}, {Opt_inline_dentry, "inline_dentry"}, {Opt_flush_merge, "flush_merge"}, + {Opt_noflush_merge, "noflush_merge"}, {Opt_nobarrier, "nobarrier"}, {Opt_fastboot, "fastboot"}, {Opt_extent_cache, "extent_cache"}, {Opt_noextent_cache, "noextent_cache"}, {Opt_noinline_data, "noinline_data"}, {Opt_data_flush, "data_flush"}, + {Opt_mode, "mode=%s"}, {Opt_fault_injection, "fault_injection=%u"}, + {Opt_lazytime, "lazytime"}, + {Opt_nolazytime, "nolazytime"}, {Opt_err, NULL}, }; @@ -417,6 +428,8 @@ static int parse_options(struct super_block *sb, char *options) "the device does not support discard"); } break; + case Opt_nodiscard: + clear_opt(sbi, DISCARD); case Opt_noheap: set_opt(sbi, NOHEAP); break; @@ -478,6 +491,9 @@ static int parse_options(struct super_block *sb, char *options) case Opt_flush_merge: set_opt(sbi, FLUSH_MERGE); break; + case Opt_noflush_merge: + clear_opt(sbi, FLUSH_MERGE); + break; case Opt_nobarrier: set_opt(sbi, NOBARRIER); break; @@ -496,6 +512,23 @@ static int parse_options(struct super_block *sb, char *options) case Opt_data_flush: set_opt(sbi, DATA_FLUSH); break; + case Opt_mode: + name = match_strdup(&args[0]); + + if (!name) + return -ENOMEM; + if (strlen(name) == 8 && + !strncmp(name, "adaptive", 8)) { + set_opt_mode(sbi, F2FS_MOUNT_ADAPTIVE); + } else if (strlen(name) == 3 && + !strncmp(name, "lfs", 3)) { + set_opt_mode(sbi, F2FS_MOUNT_LFS); + } else { + kfree(name); + return -EINVAL; + } + kfree(name); + break; case Opt_fault_injection: if (args->from && match_int(args, &arg)) return -EINVAL; @@ -506,6 +539,12 @@ static int parse_options(struct super_block *sb, char *options) "FAULT_INJECTION was not selected"); #endif break; + case Opt_lazytime: + sb->s_flags |= MS_LAZYTIME; + break; + case Opt_nolazytime: + sb->s_flags &= ~MS_LAZYTIME; + break; default: f2fs_msg(sb, KERN_ERR, "Unrecognized mount option \"%s\" or missing value", @@ -537,13 +576,11 @@ static struct inode *f2fs_alloc_inode(struct super_block *sb) fi->i_advise = 0; init_rwsem(&fi->i_sem); INIT_LIST_HEAD(&fi->dirty_list); + INIT_LIST_HEAD(&fi->gdirty_list); INIT_LIST_HEAD(&fi->inmem_pages); mutex_init(&fi->inmem_lock); - - set_inode_flag(fi, FI_NEW_INODE); - - if (test_opt(F2FS_SB(sb), INLINE_XATTR)) - set_inode_flag(fi, FI_INLINE_XATTR); + init_rwsem(&fi->dio_rwsem[READ]); + init_rwsem(&fi->dio_rwsem[WRITE]); /* Will be used by directory only */ fi->i_dir_level = F2FS_SB(sb)->dir_level; @@ -559,7 +596,7 @@ static int f2fs_drop_inode(struct inode *inode) * - f2fs_gc -> iput -> evict * - inode_wait_for_writeback(inode) */ - if (!inode_unhashed(inode) && inode->i_state & I_SYNC) { + if ((!inode_unhashed(inode) && inode->i_state & I_SYNC)) { if (!inode->i_nlink && !is_bad_inode(inode)) { /* to avoid evict_inode call simultaneously */ atomic_inc(&inode->i_count); @@ -573,10 +610,10 @@ static int f2fs_drop_inode(struct inode *inode) f2fs_destroy_extent_node(inode); sb_start_intwrite(inode->i_sb); - i_size_write(inode, 0); + f2fs_i_size_write(inode, 0); if (F2FS_HAS_BLOCKS(inode)) - f2fs_truncate(inode, true); + f2fs_truncate(inode); sb_end_intwrite(inode->i_sb); @@ -586,9 +623,47 @@ static int f2fs_drop_inode(struct inode *inode) } return 0; } + return generic_drop_inode(inode); } +int f2fs_inode_dirtied(struct inode *inode) +{ + struct f2fs_sb_info *sbi = F2FS_I_SB(inode); + + spin_lock(&sbi->inode_lock[DIRTY_META]); + if (is_inode_flag_set(inode, FI_DIRTY_INODE)) { + spin_unlock(&sbi->inode_lock[DIRTY_META]); + return 1; + } + + set_inode_flag(inode, FI_DIRTY_INODE); + list_add_tail(&F2FS_I(inode)->gdirty_list, + &sbi->inode_list[DIRTY_META]); + inc_page_count(sbi, F2FS_DIRTY_IMETA); + stat_inc_dirty_inode(sbi, DIRTY_META); + spin_unlock(&sbi->inode_lock[DIRTY_META]); + + return 0; +} + +void f2fs_inode_synced(struct inode *inode) +{ + struct f2fs_sb_info *sbi = F2FS_I_SB(inode); + + spin_lock(&sbi->inode_lock[DIRTY_META]); + if (!is_inode_flag_set(inode, FI_DIRTY_INODE)) { + spin_unlock(&sbi->inode_lock[DIRTY_META]); + return; + } + list_del_init(&F2FS_I(inode)->gdirty_list); + clear_inode_flag(inode, FI_DIRTY_INODE); + clear_inode_flag(inode, FI_AUTO_RECOVER); + dec_page_count(sbi, F2FS_DIRTY_IMETA); + stat_dec_dirty_inode(F2FS_I_SB(inode), DIRTY_META); + spin_unlock(&sbi->inode_lock[DIRTY_META]); +} + /* * f2fs_dirty_inode() is called from __mark_inode_dirty() * @@ -596,7 +671,19 @@ static int f2fs_drop_inode(struct inode *inode) */ static void f2fs_dirty_inode(struct inode *inode, int flags) { - set_inode_flag(F2FS_I(inode), FI_DIRTY_INODE); + struct f2fs_sb_info *sbi = F2FS_I_SB(inode); + + if (inode->i_ino == F2FS_NODE_INO(sbi) || + inode->i_ino == F2FS_META_INO(sbi)) + return; + + if (flags == I_DIRTY_TIME) + return; + + if (is_inode_flag_set(inode, FI_AUTO_RECOVER)) + clear_inode_flag(inode, FI_AUTO_RECOVER); + + f2fs_inode_dirtied(inode); } static void f2fs_i_callback(struct rcu_head *head) @@ -619,6 +706,8 @@ static void destroy_percpu_info(struct f2fs_sb_info *sbi) percpu_counter_destroy(&sbi->nr_pages[i]); percpu_counter_destroy(&sbi->alloc_valid_block_count); percpu_counter_destroy(&sbi->total_valid_inode_count); + + percpu_free_rwsem(&sbi->cp_rwsem); } static void f2fs_put_super(struct super_block *sb) @@ -738,7 +827,7 @@ static int f2fs_statfs(struct dentry *dentry, struct kstatfs *buf) buf->f_bsize = sbi->blocksize; buf->f_blocks = total_count - start_count; - buf->f_bfree = buf->f_blocks - valid_user_blocks(sbi) - ovp_count; + buf->f_bfree = user_block_count - valid_user_blocks(sbi) + ovp_count; buf->f_bavail = user_block_count - valid_user_blocks(sbi); buf->f_files = sbi->total_node_count - F2FS_RESERVED_NODE_NUM; @@ -803,6 +892,12 @@ static int f2fs_show_options(struct seq_file *seq, struct dentry *root) seq_puts(seq, ",noextent_cache"); if (test_opt(sbi, DATA_FLUSH)) seq_puts(seq, ",data_flush"); + + seq_puts(seq, ",mode="); + if (test_opt(sbi, ADAPTIVE)) + seq_puts(seq, "adaptive"); + else if (test_opt(sbi, LFS)) + seq_puts(seq, "lfs"); seq_printf(seq, ",active_logs=%u", sbi->active_logs); return 0; @@ -866,7 +961,6 @@ static int _name##_open_fs(struct inode *inode, struct file *file) \ } \ \ static const struct file_operations f2fs_seq_##_name##_fops = { \ - .owner = THIS_MODULE, \ .open = _name##_open_fs, \ .read = seq_read, \ .llseek = seq_lseek, \ @@ -884,6 +978,14 @@ static void default_options(struct f2fs_sb_info *sbi) set_opt(sbi, BG_GC); set_opt(sbi, INLINE_DATA); set_opt(sbi, EXTENT_CACHE); + sbi->sb->s_flags |= MS_LAZYTIME; + set_opt(sbi, FLUSH_MERGE); + if (f2fs_sb_mounted_hmsmr(sbi->sb)) { + set_opt_mode(sbi, F2FS_MOUNT_LFS); + set_opt(sbi, DISCARD); + } else { + set_opt_mode(sbi, F2FS_MOUNT_ADAPTIVE); + } #ifdef CONFIG_F2FS_FS_XATTR set_opt(sbi, XATTR_USER); @@ -1367,6 +1469,8 @@ static void init_sb_info(struct f2fs_sb_info *sbi) INIT_LIST_HEAD(&sbi->s_list); mutex_init(&sbi->umount_mutex); + mutex_init(&sbi->wio_mutex[NODE]); + mutex_init(&sbi->wio_mutex[DATA]); #ifdef CONFIG_F2FS_FS_ENCRYPTION memcpy(sbi->key_prefix, F2FS_KEY_DESC_PREFIX, @@ -1379,6 +1483,9 @@ static int init_percpu_info(struct f2fs_sb_info *sbi) { int i, err; + if (percpu_init_rwsem(&sbi->cp_rwsem)) + return -ENOMEM; + for (i = 0; i < NR_COUNT_TYPE; i++) { err = percpu_counter_init(&sbi->nr_pages[i], 0, GFP_KERNEL); if (err) @@ -1530,6 +1637,8 @@ try_onemore: goto free_sbi; sb->s_fs_info = sbi; + sbi->raw_super = raw_super; + default_options(sbi); /* parse mount options */ options = kstrdup((const char *)data, GFP_KERNEL); @@ -1559,10 +1668,8 @@ try_onemore: memcpy(sb->s_uuid, raw_super->uuid, sizeof(raw_super->uuid)); /* init f2fs-specific super block info */ - sbi->raw_super = raw_super; sbi->valid_super_block = valid_super_block; mutex_init(&sbi->gc_mutex); - mutex_init(&sbi->writepages); mutex_init(&sbi->cp_mutex); init_rwsem(&sbi->node_write); @@ -1579,7 +1686,6 @@ try_onemore: sbi->write_io[i].bio = NULL; } - init_rwsem(&sbi->cp_rwsem); init_waitqueue_head(&sbi->cp_wait); init_sb_info(sbi); @@ -1762,6 +1868,7 @@ try_onemore: return 0; free_kobj: + f2fs_sync_inode_meta(sbi); kobject_del(&sbi->s_kobj); kobject_put(&sbi->s_kobj); wait_for_completion(&sbi->s_kobj_unregister); diff --git a/fs/f2fs/xattr.c b/fs/f2fs/xattr.c index e3decae3acfb..c8898b5148eb 100644 --- a/fs/f2fs/xattr.c +++ b/fs/f2fs/xattr.c @@ -106,7 +106,7 @@ static int f2fs_xattr_advise_set(const struct xattr_handler *handler, return -EINVAL; F2FS_I(inode)->i_advise |= *(char *)value; - mark_inode_dirty(inode); + f2fs_mark_inode_dirty_sync(inode); return 0; } @@ -299,6 +299,7 @@ static inline int write_all_xattrs(struct inode *inode, __u32 hsize, if (ipage) { inline_addr = inline_xattr_addr(ipage); f2fs_wait_on_page_writeback(ipage, NODE, true); + set_page_dirty(ipage); } else { page = get_node_page(sbi, inode->i_ino); if (IS_ERR(page)) { @@ -441,13 +442,12 @@ static int __f2fs_setxattr(struct inode *inode, int index, const char *name, const void *value, size_t size, struct page *ipage, int flags) { - struct f2fs_inode_info *fi = F2FS_I(inode); struct f2fs_xattr_entry *here, *last; void *base_addr; int found, newsize; size_t len; __u32 new_hsize; - int error = -ENOMEM; + int error = 0; if (name == NULL) return -EINVAL; @@ -465,7 +465,7 @@ static int __f2fs_setxattr(struct inode *inode, int index, base_addr = read_all_xattrs(inode, ipage); if (!base_addr) - goto exit; + return -ENOMEM; /* find entry with wanted name. */ here = __find_xattr(base_addr, index, len, name); @@ -539,19 +539,15 @@ static int __f2fs_setxattr(struct inode *inode, int index, if (error) goto exit; - if (is_inode_flag_set(fi, FI_ACL_MODE)) { - inode->i_mode = fi->i_acl_mode; + if (is_inode_flag_set(inode, FI_ACL_MODE)) { + inode->i_mode = F2FS_I(inode)->i_acl_mode; inode->i_ctime = CURRENT_TIME; - clear_inode_flag(fi, FI_ACL_MODE); + clear_inode_flag(inode, FI_ACL_MODE); } if (index == F2FS_XATTR_INDEX_ENCRYPTION && !strcmp(name, F2FS_XATTR_NAME_ENCRYPTION_CONTEXT)) f2fs_set_encrypted_inode(inode); - - if (ipage) - update_inode(inode, ipage); - else - update_inode_page(inode); + f2fs_mark_inode_dirty_sync(inode); exit: kzfree(base_addr); return error; diff --git a/fs/fat/inode.c b/fs/fat/inode.c index 3bcf57925dca..da04c0298fab 100644 --- a/fs/fat/inode.c +++ b/fs/fat/inode.c @@ -1589,7 +1589,7 @@ int fat_fill_super(struct super_block *sb, void *data, int silent, int isvfat, /* * GFP_KERNEL is ok here, because while we do hold the - * supeblock lock, memory pressure can't call back into + * superblock lock, memory pressure can't call back into * the filesystem, since we're only just about to mount * it and have no inodes etc active! */ @@ -1726,7 +1726,7 @@ int fat_fill_super(struct super_block *sb, void *data, int silent, int isvfat, sbi->dir_entries = bpb.fat_dir_entries; if (sbi->dir_entries & (sbi->dir_per_block - 1)) { if (!silent) - fat_msg(sb, KERN_ERR, "bogus directory-entries per block" + fat_msg(sb, KERN_ERR, "bogus number of directory entries" " (%u)", sbi->dir_entries); goto out_invalid; } diff --git a/fs/fat/namei_msdos.c b/fs/fat/namei_msdos.c index b7e2b33aa793..1337c0c7527d 100644 --- a/fs/fat/namei_msdos.c +++ b/fs/fat/namei_msdos.c @@ -154,7 +154,7 @@ static int msdos_hash(const struct dentry *dentry, struct qstr *qstr) error = msdos_format_name(qstr->name, qstr->len, msdos_name, options); if (!error) - qstr->hash = full_name_hash(msdos_name, MSDOS_NAME); + qstr->hash = full_name_hash(dentry, msdos_name, MSDOS_NAME); return 0; } diff --git a/fs/fat/namei_vfat.c b/fs/fat/namei_vfat.c index 7092584f424a..6ccdf3f34f90 100644 --- a/fs/fat/namei_vfat.c +++ b/fs/fat/namei_vfat.c @@ -107,7 +107,7 @@ static unsigned int vfat_striptail_len(const struct qstr *qstr) */ static int vfat_hash(const struct dentry *dentry, struct qstr *qstr) { - qstr->hash = full_name_hash(qstr->name, vfat_striptail_len(qstr)); + qstr->hash = full_name_hash(dentry, qstr->name, vfat_striptail_len(qstr)); return 0; } @@ -127,7 +127,7 @@ static int vfat_hashi(const struct dentry *dentry, struct qstr *qstr) name = qstr->name; len = vfat_striptail_len(qstr); - hash = init_name_hash(); + hash = init_name_hash(dentry); while (len--) hash = partial_name_hash(nls_tolower(t, *name++), hash); qstr->hash = end_name_hash(hash); diff --git a/fs/freevxfs/Kconfig b/fs/freevxfs/Kconfig index 8dc1cd5c1efe..ce49df1020dd 100644 --- a/fs/freevxfs/Kconfig +++ b/fs/freevxfs/Kconfig @@ -5,12 +5,21 @@ config VXFS_FS FreeVxFS is a file system driver that support the VERITAS VxFS(TM) file system format. VERITAS VxFS(TM) is the standard file system of SCO UnixWare (and possibly others) and optionally available - for Sunsoft Solaris, HP-UX and many other operating systems. - Currently only readonly access is supported. + for Sunsoft Solaris, HP-UX and many other operating systems. However + these particular OS implementations of vxfs may differ in on-disk + data endianess and/or superblock offset. The vxfs module has been + tested with SCO UnixWare and HP-UX B.10.20 (pa-risc 1.1 arch.) + Currently only readonly access is supported and VxFX versions + 2, 3 and 4. Tests were performed with HP-UX VxFS version 3. NOTE: the file system type as used by mount(1), mount(2) and fstab(5) is 'vxfs' as it describes the file system format, not the actual driver. + There is a userspace utility for HP-UX logical volumes which makes + creating HP-UX logical volumes easy from HP-UX disk block device file + or regular file with image of the disk. See: + https://sourceforge.net/projects/linux-vxfs/ + To compile this as a module, choose M here: the module will be called freevxfs. If unsure, say N. diff --git a/fs/freevxfs/vxfs.h b/fs/freevxfs/vxfs.h index c8a92652612a..a41ea0ba6943 100644 --- a/fs/freevxfs/vxfs.h +++ b/fs/freevxfs/vxfs.h @@ -1,5 +1,6 @@ /* * Copyright (c) 2000-2001 Christoph Hellwig. + * Copyright (c) 2016 Krzysztof Blaszkowski * All rights reserved. * * Redistribution and use in source and binary forms, with or without @@ -38,13 +39,6 @@ */ #include <linux/types.h> - -/* - * Data types for use with the VxFS ondisk format. - */ -typedef int32_t vx_daddr_t; -typedef int32_t vx_ino_t; - /* * Superblock magic number (vxfs_super->vs_magic). */ @@ -60,6 +54,14 @@ typedef int32_t vx_ino_t; */ #define VXFS_NEFREE 32 +enum vxfs_byte_order { + VXFS_BO_LE, + VXFS_BO_BE, +}; + +typedef __u16 __bitwise __fs16; +typedef __u32 __bitwise __fs32; +typedef __u64 __bitwise __fs64; /* * VxFS superblock (disk). @@ -71,83 +73,83 @@ struct vxfs_sb { * Lots of this fields are no more used by version 2 * and never filesystems. */ - u_int32_t vs_magic; /* Magic number */ - int32_t vs_version; /* VxFS version */ - u_int32_t vs_ctime; /* create time - secs */ - u_int32_t vs_cutime; /* create time - usecs */ - int32_t __unused1; /* unused */ - int32_t __unused2; /* unused */ - vx_daddr_t vs_old_logstart; /* obsolete */ - vx_daddr_t vs_old_logend; /* obsolete */ - int32_t vs_bsize; /* block size */ - int32_t vs_size; /* number of blocks */ - int32_t vs_dsize; /* number of data blocks */ - u_int32_t vs_old_ninode; /* obsolete */ - int32_t vs_old_nau; /* obsolete */ - int32_t __unused3; /* unused */ - int32_t vs_old_defiextsize; /* obsolete */ - int32_t vs_old_ilbsize; /* obsolete */ - int32_t vs_immedlen; /* size of immediate data area */ - int32_t vs_ndaddr; /* number of direct extentes */ - vx_daddr_t vs_firstau; /* address of first AU */ - vx_daddr_t vs_emap; /* offset of extent map in AU */ - vx_daddr_t vs_imap; /* offset of inode map in AU */ - vx_daddr_t vs_iextop; /* offset of ExtOp. map in AU */ - vx_daddr_t vs_istart; /* offset of inode list in AU */ - vx_daddr_t vs_bstart; /* offset of fdblock in AU */ - vx_daddr_t vs_femap; /* aufirst + emap */ - vx_daddr_t vs_fimap; /* aufirst + imap */ - vx_daddr_t vs_fiextop; /* aufirst + iextop */ - vx_daddr_t vs_fistart; /* aufirst + istart */ - vx_daddr_t vs_fbstart; /* aufirst + bstart */ - int32_t vs_nindir; /* number of entries in indir */ - int32_t vs_aulen; /* length of AU in blocks */ - int32_t vs_auimlen; /* length of imap in blocks */ - int32_t vs_auemlen; /* length of emap in blocks */ - int32_t vs_auilen; /* length of ilist in blocks */ - int32_t vs_aupad; /* length of pad in blocks */ - int32_t vs_aublocks; /* data blocks in AU */ - int32_t vs_maxtier; /* log base 2 of aublocks */ - int32_t vs_inopb; /* number of inodes per blk */ - int32_t vs_old_inopau; /* obsolete */ - int32_t vs_old_inopilb; /* obsolete */ - int32_t vs_old_ndiripau; /* obsolete */ - int32_t vs_iaddrlen; /* size of indirect addr ext. */ - int32_t vs_bshift; /* log base 2 of bsize */ - int32_t vs_inoshift; /* log base 2 of inobp */ - int32_t vs_bmask; /* ~( bsize - 1 ) */ - int32_t vs_boffmask; /* bsize - 1 */ - int32_t vs_old_inomask; /* old_inopilb - 1 */ - int32_t vs_checksum; /* checksum of V1 data */ + __fs32 vs_magic; /* Magic number */ + __fs32 vs_version; /* VxFS version */ + __fs32 vs_ctime; /* create time - secs */ + __fs32 vs_cutime; /* create time - usecs */ + __fs32 __unused1; /* unused */ + __fs32 __unused2; /* unused */ + __fs32 vs_old_logstart; /* obsolete */ + __fs32 vs_old_logend; /* obsolete */ + __fs32 vs_bsize; /* block size */ + __fs32 vs_size; /* number of blocks */ + __fs32 vs_dsize; /* number of data blocks */ + __fs32 vs_old_ninode; /* obsolete */ + __fs32 vs_old_nau; /* obsolete */ + __fs32 __unused3; /* unused */ + __fs32 vs_old_defiextsize; /* obsolete */ + __fs32 vs_old_ilbsize; /* obsolete */ + __fs32 vs_immedlen; /* size of immediate data area */ + __fs32 vs_ndaddr; /* number of direct extentes */ + __fs32 vs_firstau; /* address of first AU */ + __fs32 vs_emap; /* offset of extent map in AU */ + __fs32 vs_imap; /* offset of inode map in AU */ + __fs32 vs_iextop; /* offset of ExtOp. map in AU */ + __fs32 vs_istart; /* offset of inode list in AU */ + __fs32 vs_bstart; /* offset of fdblock in AU */ + __fs32 vs_femap; /* aufirst + emap */ + __fs32 vs_fimap; /* aufirst + imap */ + __fs32 vs_fiextop; /* aufirst + iextop */ + __fs32 vs_fistart; /* aufirst + istart */ + __fs32 vs_fbstart; /* aufirst + bstart */ + __fs32 vs_nindir; /* number of entries in indir */ + __fs32 vs_aulen; /* length of AU in blocks */ + __fs32 vs_auimlen; /* length of imap in blocks */ + __fs32 vs_auemlen; /* length of emap in blocks */ + __fs32 vs_auilen; /* length of ilist in blocks */ + __fs32 vs_aupad; /* length of pad in blocks */ + __fs32 vs_aublocks; /* data blocks in AU */ + __fs32 vs_maxtier; /* log base 2 of aublocks */ + __fs32 vs_inopb; /* number of inodes per blk */ + __fs32 vs_old_inopau; /* obsolete */ + __fs32 vs_old_inopilb; /* obsolete */ + __fs32 vs_old_ndiripau; /* obsolete */ + __fs32 vs_iaddrlen; /* size of indirect addr ext. */ + __fs32 vs_bshift; /* log base 2 of bsize */ + __fs32 vs_inoshift; /* log base 2 of inobp */ + __fs32 vs_bmask; /* ~( bsize - 1 ) */ + __fs32 vs_boffmask; /* bsize - 1 */ + __fs32 vs_old_inomask; /* old_inopilb - 1 */ + __fs32 vs_checksum; /* checksum of V1 data */ /* * Version 1, writable */ - int32_t vs_free; /* number of free blocks */ - int32_t vs_ifree; /* number of free inodes */ - int32_t vs_efree[VXFS_NEFREE]; /* number of free extents by size */ - int32_t vs_flags; /* flags ?!? */ - u_int8_t vs_mod; /* filesystem has been changed */ - u_int8_t vs_clean; /* clean FS */ - u_int16_t __unused4; /* unused */ - u_int32_t vs_firstlogid; /* mount time log ID */ - u_int32_t vs_wtime; /* last time written - sec */ - u_int32_t vs_wutime; /* last time written - usec */ - u_int8_t vs_fname[6]; /* FS name */ - u_int8_t vs_fpack[6]; /* FS pack name */ - int32_t vs_logversion; /* log format version */ - int32_t __unused5; /* unused */ + __fs32 vs_free; /* number of free blocks */ + __fs32 vs_ifree; /* number of free inodes */ + __fs32 vs_efree[VXFS_NEFREE]; /* number of free extents by size */ + __fs32 vs_flags; /* flags ?!? */ + __u8 vs_mod; /* filesystem has been changed */ + __u8 vs_clean; /* clean FS */ + __fs16 __unused4; /* unused */ + __fs32 vs_firstlogid; /* mount time log ID */ + __fs32 vs_wtime; /* last time written - sec */ + __fs32 vs_wutime; /* last time written - usec */ + __u8 vs_fname[6]; /* FS name */ + __u8 vs_fpack[6]; /* FS pack name */ + __fs32 vs_logversion; /* log format version */ + __u32 __unused5; /* unused */ /* * Version 2, Read-only */ - vx_daddr_t vs_oltext[2]; /* OLT extent and replica */ - int32_t vs_oltsize; /* OLT extent size */ - int32_t vs_iauimlen; /* size of inode map */ - int32_t vs_iausize; /* size of IAU in blocks */ - int32_t vs_dinosize; /* size of inode in bytes */ - int32_t vs_old_dniaddr; /* indir levels per inode */ - int32_t vs_checksum2; /* checksum of V2 RO */ + __fs32 vs_oltext[2]; /* OLT extent and replica */ + __fs32 vs_oltsize; /* OLT extent size */ + __fs32 vs_iauimlen; /* size of inode map */ + __fs32 vs_iausize; /* size of IAU in blocks */ + __fs32 vs_dinosize; /* size of inode in bytes */ + __fs32 vs_old_dniaddr; /* indir levels per inode */ + __fs32 vs_checksum2; /* checksum of V2 RO */ /* * Actually much more... @@ -168,8 +170,32 @@ struct vxfs_sb_info { ino_t vsi_fshino; /* fileset header inode */ daddr_t vsi_oltext; /* OLT extent */ daddr_t vsi_oltsize; /* OLT size */ + enum vxfs_byte_order byte_order; }; +static inline u16 fs16_to_cpu(struct vxfs_sb_info *sbi, __fs16 a) +{ + if (sbi->byte_order == VXFS_BO_BE) + return be16_to_cpu((__force __be16)a); + else + return le16_to_cpu((__force __le16)a); +} + +static inline u32 fs32_to_cpu(struct vxfs_sb_info *sbi, __fs32 a) +{ + if (sbi->byte_order == VXFS_BO_BE) + return be32_to_cpu((__force __be32)a); + else + return le32_to_cpu((__force __le32)a); +} + +static inline u64 fs64_to_cpu(struct vxfs_sb_info *sbi, __fs64 a) +{ + if (sbi->byte_order == VXFS_BO_BE) + return be64_to_cpu((__force __be64)a); + else + return le64_to_cpu((__force __le64)a); +} /* * File modes. File types above 0xf000 are vxfs internal only, they should @@ -247,13 +273,6 @@ enum { #define VXFS_ISIMMED(ip) VXFS_IS_ORG((ip), VXFS_ORG_IMMED) #define VXFS_ISTYPED(ip) VXFS_IS_ORG((ip), VXFS_ORG_TYPED) - -/* - * Get filesystem private data from VFS inode. - */ -#define VXFS_INO(ip) \ - ((struct vxfs_inode_info *)(ip)->i_private) - /* * Get filesystem private data from VFS superblock. */ diff --git a/fs/freevxfs/vxfs_bmap.c b/fs/freevxfs/vxfs_bmap.c index f86fd3cacd5a..1fd41cf98b9f 100644 --- a/fs/freevxfs/vxfs_bmap.c +++ b/fs/freevxfs/vxfs_bmap.c @@ -68,8 +68,9 @@ vxfs_bmap_ext4(struct inode *ip, long bn) { struct super_block *sb = ip->i_sb; struct vxfs_inode_info *vip = VXFS_INO(ip); + struct vxfs_sb_info *sbi = VXFS_SBI(sb); unsigned long bsize = sb->s_blocksize; - u32 indsize = vip->vii_ext4.ve4_indsize; + u32 indsize = fs32_to_cpu(sbi, vip->vii_ext4.ve4_indsize); int i; if (indsize > sb->s_blocksize) @@ -77,22 +78,24 @@ vxfs_bmap_ext4(struct inode *ip, long bn) for (i = 0; i < VXFS_NDADDR; i++) { struct direct *d = vip->vii_ext4.ve4_direct + i; - if (bn >= 0 && bn < d->size) - return (bn + d->extent); - bn -= d->size; + if (bn >= 0 && bn < fs32_to_cpu(sbi, d->size)) + return (bn + fs32_to_cpu(sbi, d->extent)); + bn -= fs32_to_cpu(sbi, d->size); } if ((bn / (indsize * indsize * bsize / 4)) == 0) { struct buffer_head *buf; daddr_t bno; - u32 *indir; + __fs32 *indir; - buf = sb_bread(sb, vip->vii_ext4.ve4_indir[0]); + buf = sb_bread(sb, + fs32_to_cpu(sbi, vip->vii_ext4.ve4_indir[0])); if (!buf || !buffer_mapped(buf)) goto fail_buf; - indir = (u32 *)buf->b_data; - bno = indir[(bn/indsize) % (indsize*bn)] + (bn%indsize); + indir = (__fs32 *)buf->b_data; + bno = fs32_to_cpu(sbi, indir[(bn / indsize) % (indsize * bn)]) + + (bn % indsize); brelse(buf); return bno; @@ -127,6 +130,7 @@ fail_buf: static daddr_t vxfs_bmap_indir(struct inode *ip, long indir, int size, long block) { + struct vxfs_sb_info *sbi = VXFS_SBI(ip->i_sb); struct buffer_head *bp = NULL; daddr_t pblock = 0; int i; @@ -142,24 +146,27 @@ vxfs_bmap_indir(struct inode *ip, long indir, int size, long block) typ = ((struct vxfs_typed *)bp->b_data) + (i % VXFS_TYPED_PER_BLOCK(ip->i_sb)); - off = (typ->vt_hdr & VXFS_TYPED_OFFSETMASK); + off = fs64_to_cpu(sbi, typ->vt_hdr) & VXFS_TYPED_OFFSETMASK; if (block < off) { brelse(bp); continue; } - switch ((u_int32_t)(typ->vt_hdr >> VXFS_TYPED_TYPESHIFT)) { + switch ((u_int32_t)(fs64_to_cpu(sbi, typ->vt_hdr) >> + VXFS_TYPED_TYPESHIFT)) { case VXFS_TYPED_INDIRECT: - pblock = vxfs_bmap_indir(ip, typ->vt_block, - typ->vt_size, block - off); + pblock = vxfs_bmap_indir(ip, + fs32_to_cpu(sbi, typ->vt_block), + fs32_to_cpu(sbi, typ->vt_size), + block - off); if (pblock == -2) break; goto out; case VXFS_TYPED_DATA: - if ((block - off) >= typ->vt_size) + if ((block - off) >= fs32_to_cpu(sbi, typ->vt_size)) break; - pblock = (typ->vt_block + block - off); + pblock = fs32_to_cpu(sbi, typ->vt_block) + block - off; goto out; case VXFS_TYPED_INDIRECT_DEV4: case VXFS_TYPED_DATA_DEV4: { @@ -167,13 +174,15 @@ vxfs_bmap_indir(struct inode *ip, long indir, int size, long block) (struct vxfs_typed_dev4 *)typ; printk(KERN_INFO "\n\nTYPED_DEV4 detected!\n"); - printk(KERN_INFO "block: %Lu\tsize: %Ld\tdev: %d\n", - (unsigned long long) typ4->vd4_block, - (unsigned long long) typ4->vd4_size, - typ4->vd4_dev); + printk(KERN_INFO "block: %llu\tsize: %lld\tdev: %d\n", + fs64_to_cpu(sbi, typ4->vd4_block), + fs64_to_cpu(sbi, typ4->vd4_size), + fs32_to_cpu(sbi, typ4->vd4_dev)); goto fail; } default: + printk(KERN_ERR "%s:%d vt_hdr %llu\n", __func__, + __LINE__, fs64_to_cpu(sbi, typ->vt_hdr)); BUG(); } brelse(bp); @@ -201,28 +210,33 @@ static daddr_t vxfs_bmap_typed(struct inode *ip, long iblock) { struct vxfs_inode_info *vip = VXFS_INO(ip); + struct vxfs_sb_info *sbi = VXFS_SBI(ip->i_sb); daddr_t pblock = 0; int i; for (i = 0; i < VXFS_NTYPED; i++) { struct vxfs_typed *typ = vip->vii_org.typed + i; - int64_t off = (typ->vt_hdr & VXFS_TYPED_OFFSETMASK); + u64 hdr = fs64_to_cpu(sbi, typ->vt_hdr); + int64_t off = (hdr & VXFS_TYPED_OFFSETMASK); #ifdef DIAGNOSTIC vxfs_typdump(typ); #endif if (iblock < off) continue; - switch ((u_int32_t)(typ->vt_hdr >> VXFS_TYPED_TYPESHIFT)) { + switch ((u32)(hdr >> VXFS_TYPED_TYPESHIFT)) { case VXFS_TYPED_INDIRECT: - pblock = vxfs_bmap_indir(ip, typ->vt_block, - typ->vt_size, iblock - off); + pblock = vxfs_bmap_indir(ip, + fs32_to_cpu(sbi, typ->vt_block), + fs32_to_cpu(sbi, typ->vt_size), + iblock - off); if (pblock == -2) break; return (pblock); case VXFS_TYPED_DATA: - if ((iblock - off) < typ->vt_size) - return (typ->vt_block + iblock - off); + if ((iblock - off) < fs32_to_cpu(sbi, typ->vt_size)) + return (fs32_to_cpu(sbi, typ->vt_block) + + iblock - off); break; case VXFS_TYPED_INDIRECT_DEV4: case VXFS_TYPED_DATA_DEV4: { @@ -230,10 +244,10 @@ vxfs_bmap_typed(struct inode *ip, long iblock) (struct vxfs_typed_dev4 *)typ; printk(KERN_INFO "\n\nTYPED_DEV4 detected!\n"); - printk(KERN_INFO "block: %Lu\tsize: %Ld\tdev: %d\n", - (unsigned long long) typ4->vd4_block, - (unsigned long long) typ4->vd4_size, - typ4->vd4_dev); + printk(KERN_INFO "block: %llu\tsize: %lld\tdev: %d\n", + fs64_to_cpu(sbi, typ4->vd4_block), + fs64_to_cpu(sbi, typ4->vd4_size), + fs32_to_cpu(sbi, typ4->vd4_dev)); return 0; } default: diff --git a/fs/freevxfs/vxfs_dir.h b/fs/freevxfs/vxfs_dir.h index aaf1fb098639..acc5477b3f23 100644 --- a/fs/freevxfs/vxfs_dir.h +++ b/fs/freevxfs/vxfs_dir.h @@ -48,9 +48,9 @@ * Linux driver for now. */ struct vxfs_dirblk { - u_int16_t d_free; /* free space in dirblock */ - u_int16_t d_nhash; /* no of hash chains */ - u_int16_t d_hash[1]; /* hash chain */ + __fs16 d_free; /* free space in dirblock */ + __fs16 d_nhash; /* no of hash chains */ + __fs16 d_hash[1]; /* hash chain */ }; /* @@ -63,10 +63,10 @@ struct vxfs_dirblk { * VxFS directory entry. */ struct vxfs_direct { - vx_ino_t d_ino; /* inode number */ - u_int16_t d_reclen; /* record length */ - u_int16_t d_namelen; /* d_name length */ - u_int16_t d_hashnext; /* next hash entry */ + __fs32 d_ino; /* inode number */ + __fs16 d_reclen; /* record length */ + __fs16 d_namelen; /* d_name length */ + __fs16 d_hashnext; /* next hash entry */ char d_name[VXFS_NAMELEN]; /* name */ }; @@ -87,6 +87,7 @@ struct vxfs_direct { /* * VXFS_DIRBLKOV is the overhead of a specific dirblock. */ -#define VXFS_DIRBLKOV(dbp) ((sizeof(short) * dbp->d_nhash) + 4) +#define VXFS_DIRBLKOV(sbi, dbp) \ + ((sizeof(short) * fs16_to_cpu(sbi, dbp->d_nhash)) + 4) #endif /* _VXFS_DIR_H_ */ diff --git a/fs/freevxfs/vxfs_extern.h b/fs/freevxfs/vxfs_extern.h index e3dcb4467d92..f5c428e21024 100644 --- a/fs/freevxfs/vxfs_extern.h +++ b/fs/freevxfs/vxfs_extern.h @@ -52,14 +52,10 @@ extern int vxfs_read_fshead(struct super_block *); /* vxfs_inode.c */ extern const struct address_space_operations vxfs_immed_aops; -extern struct kmem_cache *vxfs_inode_cachep; extern void vxfs_dumpi(struct vxfs_inode_info *, ino_t); -extern struct inode * vxfs_get_fake_inode(struct super_block *, - struct vxfs_inode_info *); -extern void vxfs_put_fake_inode(struct inode *); -extern struct vxfs_inode_info * vxfs_blkiget(struct super_block *, u_long, ino_t); -extern struct vxfs_inode_info * vxfs_stiget(struct super_block *, ino_t); -extern struct inode * vxfs_iget(struct super_block *, ino_t); +extern struct inode *vxfs_blkiget(struct super_block *, u_long, ino_t); +extern struct inode *vxfs_stiget(struct super_block *, ino_t); +extern struct inode *vxfs_iget(struct super_block *, ino_t); extern void vxfs_evict_inode(struct inode *); /* vxfs_lookup.c */ diff --git a/fs/freevxfs/vxfs_fshead.c b/fs/freevxfs/vxfs_fshead.c index c9a6a94e58e9..a4610a77649e 100644 --- a/fs/freevxfs/vxfs_fshead.c +++ b/fs/freevxfs/vxfs_fshead.c @@ -1,5 +1,6 @@ /* * Copyright (c) 2000-2001 Christoph Hellwig. + * Copyright (c) 2016 Krzysztof Blaszkowski * All rights reserved. * * Redistribution and use in source and binary forms, with or without @@ -108,31 +109,26 @@ vxfs_read_fshead(struct super_block *sbp) { struct vxfs_sb_info *infp = VXFS_SBI(sbp); struct vxfs_fsh *pfp, *sfp; - struct vxfs_inode_info *vip, *tip; + struct vxfs_inode_info *vip; - vip = vxfs_blkiget(sbp, infp->vsi_iext, infp->vsi_fshino); - if (!vip) { + infp->vsi_fship = vxfs_blkiget(sbp, infp->vsi_iext, infp->vsi_fshino); + if (!infp->vsi_fship) { printk(KERN_ERR "vxfs: unable to read fsh inode\n"); return -EINVAL; } + + vip = VXFS_INO(infp->vsi_fship); if (!VXFS_ISFSH(vip)) { printk(KERN_ERR "vxfs: fsh list inode is of wrong type (%x)\n", vip->vii_mode & VXFS_TYPE_MASK); - goto out_free_fship; + goto out_iput_fship; } - #ifdef DIAGNOSTIC printk("vxfs: fsh inode dump:\n"); vxfs_dumpi(vip, infp->vsi_fshino); #endif - infp->vsi_fship = vxfs_get_fake_inode(sbp, vip); - if (!infp->vsi_fship) { - printk(KERN_ERR "vxfs: unable to get fsh inode\n"); - goto out_free_fship; - } - sfp = vxfs_getfsh(infp->vsi_fship, 0); if (!sfp) { printk(KERN_ERR "vxfs: unable to get structural fsh\n"); @@ -153,14 +149,10 @@ vxfs_read_fshead(struct super_block *sbp) vxfs_dumpfsh(pfp); #endif - tip = vxfs_blkiget(sbp, infp->vsi_iext, sfp->fsh_ilistino[0]); - if (!tip) - goto out_free_pfp; - - infp->vsi_stilist = vxfs_get_fake_inode(sbp, tip); + infp->vsi_stilist = vxfs_blkiget(sbp, infp->vsi_iext, + fs32_to_cpu(infp, sfp->fsh_ilistino[0])); if (!infp->vsi_stilist) { printk(KERN_ERR "vxfs: unable to get structural list inode\n"); - kfree(tip); goto out_free_pfp; } if (!VXFS_ISILT(VXFS_INO(infp->vsi_stilist))) { @@ -169,13 +161,9 @@ vxfs_read_fshead(struct super_block *sbp) goto out_iput_stilist; } - tip = vxfs_stiget(sbp, pfp->fsh_ilistino[0]); - if (!tip) - goto out_iput_stilist; - infp->vsi_ilist = vxfs_get_fake_inode(sbp, tip); + infp->vsi_ilist = vxfs_stiget(sbp, fs32_to_cpu(infp, pfp->fsh_ilistino[0])); if (!infp->vsi_ilist) { printk(KERN_ERR "vxfs: unable to get inode list inode\n"); - kfree(tip); goto out_iput_stilist; } if (!VXFS_ISILT(VXFS_INO(infp->vsi_ilist))) { @@ -184,6 +172,8 @@ vxfs_read_fshead(struct super_block *sbp) goto out_iput_ilist; } + kfree(pfp); + kfree(sfp); return 0; out_iput_ilist: @@ -197,7 +187,4 @@ vxfs_read_fshead(struct super_block *sbp) out_iput_fship: iput(infp->vsi_fship); return -EINVAL; - out_free_fship: - kfree(vip); - return -EINVAL; } diff --git a/fs/freevxfs/vxfs_fshead.h b/fs/freevxfs/vxfs_fshead.h index ead0d640c181..e026f0c49159 100644 --- a/fs/freevxfs/vxfs_fshead.h +++ b/fs/freevxfs/vxfs_fshead.h @@ -1,5 +1,6 @@ /* * Copyright (c) 2000-2001 Christoph Hellwig. + * Copyright (c) 2016 Krzysztof Blaszkowski * All rights reserved. * * Redistribution and use in source and binary forms, with or without @@ -42,20 +43,20 @@ * Fileset header */ struct vxfs_fsh { - u_int32_t fsh_version; /* fileset header version */ - u_int32_t fsh_fsindex; /* fileset index */ - u_int32_t fsh_time; /* modification time - sec */ - u_int32_t fsh_utime; /* modification time - usec */ - u_int32_t fsh_extop; /* extop flags */ - vx_ino_t fsh_ninodes; /* allocated inodes */ - u_int32_t fsh_nau; /* number of IAUs */ - u_int32_t fsh_old_ilesize; /* old size of ilist */ - u_int32_t fsh_dflags; /* flags */ - u_int32_t fsh_quota; /* quota limit */ - vx_ino_t fsh_maxinode; /* maximum inode number */ - vx_ino_t fsh_iauino; /* IAU inode */ - vx_ino_t fsh_ilistino[2]; /* ilist inodes */ - vx_ino_t fsh_lctino; /* link count table inode */ + __fs32 fsh_version; /* fileset header version */ + __fs32 fsh_fsindex; /* fileset index */ + __fs32 fsh_time; /* modification time - sec */ + __fs32 fsh_utime; /* modification time - usec */ + __fs32 fsh_extop; /* extop flags */ + __fs32 fsh_ninodes; /* allocated inodes */ + __fs32 fsh_nau; /* number of IAUs */ + __fs32 fsh_old_ilesize; /* old size of ilist */ + __fs32 fsh_dflags; /* flags */ + __fs32 fsh_quota; /* quota limit */ + __fs32 fsh_maxinode; /* maximum inode number */ + __fs32 fsh_iauino; /* IAU inode */ + __fs32 fsh_ilistino[2]; /* ilist inodes */ + __fs32 fsh_lctino; /* link count table inode */ /* * Slightly more fields follow, but they diff --git a/fs/freevxfs/vxfs_inode.c b/fs/freevxfs/vxfs_inode.c index 3e2ccade61ed..1f41b25ef38b 100644 --- a/fs/freevxfs/vxfs_inode.c +++ b/fs/freevxfs/vxfs_inode.c @@ -1,5 +1,6 @@ /* * Copyright (c) 2000-2001 Christoph Hellwig. + * Copyright (c) 2016 Krzysztof Blaszkowski * All rights reserved. * * Redistribution and use in source and binary forms, with or without @@ -42,9 +43,6 @@ #include "vxfs_extern.h" -struct kmem_cache *vxfs_inode_cachep; - - #ifdef DIAGNOSTIC /* * Dump inode contents (partially). @@ -68,6 +66,83 @@ vxfs_dumpi(struct vxfs_inode_info *vip, ino_t ino) } #endif +/** + * vxfs_transmod - mode for a VxFS inode + * @vip: VxFS inode + * + * Description: + * vxfs_transmod returns a Linux mode_t for a given + * VxFS inode structure. + */ +static __inline__ umode_t +vxfs_transmod(struct vxfs_inode_info *vip) +{ + umode_t ret = vip->vii_mode & ~VXFS_TYPE_MASK; + + if (VXFS_ISFIFO(vip)) + ret |= S_IFIFO; + if (VXFS_ISCHR(vip)) + ret |= S_IFCHR; + if (VXFS_ISDIR(vip)) + ret |= S_IFDIR; + if (VXFS_ISBLK(vip)) + ret |= S_IFBLK; + if (VXFS_ISLNK(vip)) + ret |= S_IFLNK; + if (VXFS_ISREG(vip)) + ret |= S_IFREG; + if (VXFS_ISSOC(vip)) + ret |= S_IFSOCK; + + return (ret); +} + +static inline void dip2vip_cpy(struct vxfs_sb_info *sbi, + struct vxfs_inode_info *vip, struct vxfs_dinode *dip) +{ + struct inode *inode = &vip->vfs_inode; + + vip->vii_mode = fs32_to_cpu(sbi, dip->vdi_mode); + vip->vii_nlink = fs32_to_cpu(sbi, dip->vdi_nlink); + vip->vii_uid = fs32_to_cpu(sbi, dip->vdi_uid); + vip->vii_gid = fs32_to_cpu(sbi, dip->vdi_gid); + vip->vii_size = fs64_to_cpu(sbi, dip->vdi_size); + vip->vii_atime = fs32_to_cpu(sbi, dip->vdi_atime); + vip->vii_autime = fs32_to_cpu(sbi, dip->vdi_autime); + vip->vii_mtime = fs32_to_cpu(sbi, dip->vdi_mtime); + vip->vii_mutime = fs32_to_cpu(sbi, dip->vdi_mutime); + vip->vii_ctime = fs32_to_cpu(sbi, dip->vdi_ctime); + vip->vii_cutime = fs32_to_cpu(sbi, dip->vdi_cutime); + vip->vii_orgtype = dip->vdi_orgtype; + + vip->vii_blocks = fs32_to_cpu(sbi, dip->vdi_blocks); + vip->vii_gen = fs32_to_cpu(sbi, dip->vdi_gen); + + if (VXFS_ISDIR(vip)) + vip->vii_dotdot = fs32_to_cpu(sbi, dip->vdi_dotdot); + else if (!VXFS_ISREG(vip) && !VXFS_ISLNK(vip)) + vip->vii_rdev = fs32_to_cpu(sbi, dip->vdi_rdev); + + /* don't endian swap the fields that differ by orgtype */ + memcpy(&vip->vii_org, &dip->vdi_org, sizeof(vip->vii_org)); + + inode->i_mode = vxfs_transmod(vip); + i_uid_write(inode, (uid_t)vip->vii_uid); + i_gid_write(inode, (gid_t)vip->vii_gid); + + set_nlink(inode, vip->vii_nlink); + inode->i_size = vip->vii_size; + + inode->i_atime.tv_sec = vip->vii_atime; + inode->i_ctime.tv_sec = vip->vii_ctime; + 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; + inode->i_generation = vip->vii_gen; +} /** * vxfs_blkiget - find inode based on extent # @@ -85,50 +160,55 @@ vxfs_dumpi(struct vxfs_inode_info *vip, ino_t ino) * buffercache. This function should not be used outside the * read_super() method, otherwise the data may be incoherent. */ -struct vxfs_inode_info * +struct inode * vxfs_blkiget(struct super_block *sbp, u_long extent, ino_t ino) { struct buffer_head *bp; + struct inode *inode; u_long block, offset; + inode = new_inode(sbp); + if (!inode) + return NULL; + inode->i_ino = get_next_ino(); + block = extent + ((ino * VXFS_ISIZE) / sbp->s_blocksize); offset = ((ino % (sbp->s_blocksize / VXFS_ISIZE)) * VXFS_ISIZE); bp = sb_bread(sbp, block); if (bp && buffer_mapped(bp)) { - struct vxfs_inode_info *vip; + struct vxfs_inode_info *vip = VXFS_INO(inode); struct vxfs_dinode *dip; - if (!(vip = kmem_cache_alloc(vxfs_inode_cachep, GFP_KERNEL))) - goto fail; dip = (struct vxfs_dinode *)(bp->b_data + offset); - memcpy(vip, dip, sizeof(*vip)); + dip2vip_cpy(VXFS_SBI(sbp), vip, dip); + vip->vfs_inode.i_mapping->a_ops = &vxfs_aops; #ifdef DIAGNOSTIC vxfs_dumpi(vip, ino); #endif brelse(bp); - return (vip); + return inode; } -fail: printk(KERN_WARNING "vxfs: unable to read block %ld\n", block); brelse(bp); + iput(inode); return NULL; } /** * __vxfs_iget - generic find inode facility - * @sbp: VFS superblock - * @ino: inode number * @ilistp: inode list + * @vip: VxFS inode to fill in + * @ino: inode number * * Description: * Search the for inode number @ino in the filesystem * described by @sbp. Use the specified inode table (@ilistp). - * Returns the matching VxFS inode on success, else an error code. + * Returns the matching inode on success, else an error code. */ -static struct vxfs_inode_info * -__vxfs_iget(ino_t ino, struct inode *ilistp) +static int +__vxfs_iget(struct inode *ilistp, struct vxfs_inode_info *vip, ino_t ino) { struct page *pp; u_long offset; @@ -137,28 +217,22 @@ __vxfs_iget(ino_t ino, struct inode *ilistp) pp = vxfs_get_page(ilistp->i_mapping, ino * VXFS_ISIZE / PAGE_SIZE); if (!IS_ERR(pp)) { - struct vxfs_inode_info *vip; struct vxfs_dinode *dip; caddr_t kaddr = (char *)page_address(pp); - if (!(vip = kmem_cache_alloc(vxfs_inode_cachep, GFP_KERNEL))) - goto fail; dip = (struct vxfs_dinode *)(kaddr + offset); - memcpy(vip, dip, sizeof(*vip)); + dip2vip_cpy(VXFS_SBI(ilistp->i_sb), vip, dip); + vip->vfs_inode.i_mapping->a_ops = &vxfs_aops; #ifdef DIAGNOSTIC vxfs_dumpi(vip, ino); #endif vxfs_put_page(pp); - return (vip); + return 0; } - printk(KERN_WARNING "vxfs: error on page %p\n", pp); - return ERR_CAST(pp); - -fail: - printk(KERN_WARNING "vxfs: unable to read inode %ld\n", (unsigned long)ino); - vxfs_put_page(pp); - return ERR_PTR(-ENOMEM); + printk(KERN_WARNING "vxfs: error on page 0x%p for inode %ld\n", + pp, (unsigned long)ino); + return PTR_ERR(pp); } /** @@ -169,116 +243,26 @@ fail: * Description: * Find inode @ino in the filesystem described by @sbp using * the structural inode list. - * Returns the matching VxFS inode on success, else a NULL pointer. - */ -struct vxfs_inode_info * -vxfs_stiget(struct super_block *sbp, ino_t ino) -{ - struct vxfs_inode_info *vip; - - vip = __vxfs_iget(ino, VXFS_SBI(sbp)->vsi_stilist); - return IS_ERR(vip) ? NULL : vip; -} - -/** - * vxfs_transmod - mode for a VxFS inode - * @vip: VxFS inode - * - * Description: - * vxfs_transmod returns a Linux mode_t for a given - * VxFS inode structure. - */ -static __inline__ umode_t -vxfs_transmod(struct vxfs_inode_info *vip) -{ - umode_t ret = vip->vii_mode & ~VXFS_TYPE_MASK; - - if (VXFS_ISFIFO(vip)) - ret |= S_IFIFO; - if (VXFS_ISCHR(vip)) - ret |= S_IFCHR; - if (VXFS_ISDIR(vip)) - ret |= S_IFDIR; - if (VXFS_ISBLK(vip)) - ret |= S_IFBLK; - if (VXFS_ISLNK(vip)) - ret |= S_IFLNK; - if (VXFS_ISREG(vip)) - ret |= S_IFREG; - if (VXFS_ISSOC(vip)) - ret |= S_IFSOCK; - - return (ret); -} - -/** - * vxfs_iinit- helper to fill inode fields - * @ip: VFS inode - * @vip: VxFS inode - * - * Description: - * vxfs_instino is a helper function to fill in all relevant - * fields in @ip from @vip. - */ -static void -vxfs_iinit(struct inode *ip, struct vxfs_inode_info *vip) -{ - - ip->i_mode = vxfs_transmod(vip); - i_uid_write(ip, (uid_t)vip->vii_uid); - i_gid_write(ip, (gid_t)vip->vii_gid); - - set_nlink(ip, vip->vii_nlink); - ip->i_size = vip->vii_size; - - ip->i_atime.tv_sec = vip->vii_atime; - ip->i_ctime.tv_sec = vip->vii_ctime; - ip->i_mtime.tv_sec = vip->vii_mtime; - ip->i_atime.tv_nsec = 0; - ip->i_ctime.tv_nsec = 0; - ip->i_mtime.tv_nsec = 0; - - ip->i_blocks = vip->vii_blocks; - ip->i_generation = vip->vii_gen; - - ip->i_private = vip; - -} - -/** - * vxfs_get_fake_inode - get fake inode structure - * @sbp: filesystem superblock - * @vip: fspriv inode - * - * Description: - * vxfs_fake_inode gets a fake inode (not in the inode hash) for a - * superblock, vxfs_inode pair. - * Returns the filled VFS inode. + * Returns the matching inode on success, else a NULL pointer. */ struct inode * -vxfs_get_fake_inode(struct super_block *sbp, struct vxfs_inode_info *vip) +vxfs_stiget(struct super_block *sbp, ino_t ino) { - struct inode *ip = NULL; - - if ((ip = new_inode(sbp))) { - ip->i_ino = get_next_ino(); - vxfs_iinit(ip, vip); - ip->i_mapping->a_ops = &vxfs_aops; + struct inode *inode; + int error; + + inode = new_inode(sbp); + if (!inode) + return NULL; + inode->i_ino = get_next_ino(); + + error = __vxfs_iget(VXFS_SBI(sbp)->vsi_stilist, VXFS_INO(inode), ino); + if (error) { + iput(inode); + return NULL; } - return (ip); -} -/** - * vxfs_put_fake_inode - free faked inode - * *ip: VFS inode - * - * Description: - * vxfs_put_fake_inode frees all data associated with @ip. - */ -void -vxfs_put_fake_inode(struct inode *ip) -{ - iput(ip); + return inode; } /** @@ -296,6 +280,7 @@ vxfs_iget(struct super_block *sbp, ino_t ino) struct vxfs_inode_info *vip; const struct address_space_operations *aops; struct inode *ip; + int error; ip = iget_locked(sbp, ino); if (!ip) @@ -303,14 +288,13 @@ vxfs_iget(struct super_block *sbp, ino_t ino) if (!(ip->i_state & I_NEW)) return ip; - vip = __vxfs_iget(ino, VXFS_SBI(sbp)->vsi_ilist); - if (IS_ERR(vip)) { + vip = VXFS_INO(ip); + error = __vxfs_iget(VXFS_SBI(sbp)->vsi_ilist, vip, ino); + if (error) { iget_failed(ip); - return ERR_CAST(vip); + return ERR_PTR(error); } - vxfs_iinit(ip, vip); - if (VXFS_ISIMMED(vip)) aops = &vxfs_immed_aops; else @@ -341,12 +325,6 @@ vxfs_iget(struct super_block *sbp, ino_t ino) return ip; } -static void vxfs_i_callback(struct rcu_head *head) -{ - struct inode *inode = container_of(head, struct inode, i_rcu); - kmem_cache_free(vxfs_inode_cachep, inode->i_private); -} - /** * vxfs_evict_inode - remove inode from main memory * @ip: inode to discard. @@ -360,5 +338,4 @@ vxfs_evict_inode(struct inode *ip) { truncate_inode_pages_final(&ip->i_data); clear_inode(ip); - call_rcu(&ip->i_rcu, vxfs_i_callback); } diff --git a/fs/freevxfs/vxfs_inode.h b/fs/freevxfs/vxfs_inode.h index 240aeb11263f..f012abed125d 100644 --- a/fs/freevxfs/vxfs_inode.h +++ b/fs/freevxfs/vxfs_inode.h @@ -1,5 +1,6 @@ /* * Copyright (c) 2000-2001 Christoph Hellwig. + * Copyright (c) 2016 Krzysztof Blaszkowski * All rights reserved. * * Redistribution and use in source and binary forms, with or without @@ -66,74 +67,74 @@ enum { * Data stored immediately in the inode. */ struct vxfs_immed { - u_int8_t vi_immed[VXFS_NIMMED]; + __u8 vi_immed[VXFS_NIMMED]; }; struct vxfs_ext4 { - u_int32_t ve4_spare; /* ?? */ - u_int32_t ve4_indsize; /* Indirect extent size */ - vx_daddr_t ve4_indir[VXFS_NIADDR]; /* Indirect extents */ + __fs32 ve4_spare; /* ?? */ + __fs32 ve4_indsize; /* Indirect extent size */ + __fs32 ve4_indir[VXFS_NIADDR]; /* Indirect extents */ struct direct { /* Direct extents */ - vx_daddr_t extent; /* Extent number */ - int32_t size; /* Size of extent */ + __fs32 extent; /* Extent number */ + __fs32 size; /* Size of extent */ } ve4_direct[VXFS_NDADDR]; }; struct vxfs_typed { - u_int64_t vt_hdr; /* Header, 0xTTOOOOOOOOOOOOOO; T=type,O=offs */ - vx_daddr_t vt_block; /* Extent block */ - int32_t vt_size; /* Size in blocks */ + __fs64 vt_hdr; /* Header, 0xTTOOOOOOOOOOOOOO; T=type,O=offs */ + __fs32 vt_block; /* Extent block */ + __fs32 vt_size; /* Size in blocks */ }; struct vxfs_typed_dev4 { - u_int64_t vd4_hdr; /* Header, 0xTTOOOOOOOOOOOOOO; T=type,O=offs */ - u_int64_t vd4_block; /* Extent block */ - u_int64_t vd4_size; /* Size in blocks */ - int32_t vd4_dev; /* Device ID */ - u_int32_t __pad1; + __fs64 vd4_hdr; /* Header, 0xTTOOOOOOOOOOOOOO; T=type,O=offs */ + __fs64 vd4_block; /* Extent block */ + __fs64 vd4_size; /* Size in blocks */ + __fs32 vd4_dev; /* Device ID */ + __u8 __pad1; }; /* * The inode as contained on the physical device. */ struct vxfs_dinode { - int32_t vdi_mode; - u_int32_t vdi_nlink; /* Link count */ - u_int32_t vdi_uid; /* UID */ - u_int32_t vdi_gid; /* GID */ - u_int64_t vdi_size; /* Inode size in bytes */ - u_int32_t vdi_atime; /* Last time accessed - sec */ - u_int32_t vdi_autime; /* Last time accessed - usec */ - u_int32_t vdi_mtime; /* Last modify time - sec */ - u_int32_t vdi_mutime; /* Last modify time - usec */ - u_int32_t vdi_ctime; /* Create time - sec */ - u_int32_t vdi_cutime; /* Create time - usec */ - u_int8_t vdi_aflags; /* Allocation flags */ - u_int8_t vdi_orgtype; /* Organisation type */ - u_int16_t vdi_eopflags; - u_int32_t vdi_eopdata; + __fs32 vdi_mode; + __fs32 vdi_nlink; /* Link count */ + __fs32 vdi_uid; /* UID */ + __fs32 vdi_gid; /* GID */ + __fs64 vdi_size; /* Inode size in bytes */ + __fs32 vdi_atime; /* Last time accessed - sec */ + __fs32 vdi_autime; /* Last time accessed - usec */ + __fs32 vdi_mtime; /* Last modify time - sec */ + __fs32 vdi_mutime; /* Last modify time - usec */ + __fs32 vdi_ctime; /* Create time - sec */ + __fs32 vdi_cutime; /* Create time - usec */ + __u8 vdi_aflags; /* Allocation flags */ + __u8 vdi_orgtype; /* Organisation type */ + __fs16 vdi_eopflags; + __fs32 vdi_eopdata; union { - u_int32_t rdev; - u_int32_t dotdot; + __fs32 rdev; + __fs32 dotdot; struct { - u_int32_t reserved; - u_int32_t fixextsize; + __u32 reserved; + __fs32 fixextsize; } i_regular; struct { - u_int32_t matchino; - u_int32_t fsetindex; + __fs32 matchino; + __fs32 fsetindex; } i_vxspec; - u_int64_t align; + __u64 align; } vdi_ftarea; - u_int32_t vdi_blocks; /* How much blocks does inode occupy */ - u_int32_t vdi_gen; /* Inode generation */ - u_int64_t vdi_version; /* Version */ + __fs32 vdi_blocks; /* How much blocks does inode occupy */ + __fs32 vdi_gen; /* Inode generation */ + __fs64 vdi_version; /* Version */ union { struct vxfs_immed immed; struct vxfs_ext4 ext4; struct vxfs_typed typed[VXFS_NTYPED]; } vdi_org; - u_int32_t vdi_iattrino; + __fs32 vdi_iattrino; }; #define vdi_rdev vdi_ftarea.rdev @@ -149,32 +150,45 @@ struct vxfs_dinode { /* * The inode as represented in the main memory. - * - * TBD: This should become a separate structure... */ -#define vxfs_inode_info vxfs_dinode - -#define vii_mode vdi_mode -#define vii_uid vdi_uid -#define vii_gid vdi_gid -#define vii_nlink vdi_nlink -#define vii_size vdi_size -#define vii_atime vdi_atime -#define vii_ctime vdi_ctime -#define vii_mtime vdi_mtime -#define vii_blocks vdi_blocks -#define vii_org vdi_org -#define vii_orgtype vdi_orgtype -#define vii_gen vdi_gen - -#define vii_rdev vdi_ftarea.rdev -#define vii_dotdot vdi_ftarea.dotdot -#define vii_fixextsize vdi_ftarea.regular.fixextsize -#define vii_matchino vdi_ftarea.vxspec.matchino -#define vii_fsetindex vdi_ftarea.vxspec.fsetindex - -#define vii_immed vdi_org.immed -#define vii_ext4 vdi_org.ext4 -#define vii_typed vdi_org.typed +struct vxfs_inode_info { + struct inode vfs_inode; + + __u32 vii_mode; + __u32 vii_nlink; /* Link count */ + __u32 vii_uid; /* UID */ + __u32 vii_gid; /* GID */ + __u64 vii_size; /* Inode size in bytes */ + __u32 vii_atime; /* Last time accessed - sec */ + __u32 vii_autime; /* Last time accessed - usec */ + __u32 vii_mtime; /* Last modify time - sec */ + __u32 vii_mutime; /* Last modify time - usec */ + __u32 vii_ctime; /* Create time - sec */ + __u32 vii_cutime; /* Create time - usec */ + __u8 vii_orgtype; /* Organisation type */ + union { + __u32 rdev; + __u32 dotdot; + } vii_ftarea; + __u32 vii_blocks; /* How much blocks does inode occupy */ + __u32 vii_gen; /* Inode generation */ + union { + struct vxfs_immed immed; + struct vxfs_ext4 ext4; + struct vxfs_typed typed[VXFS_NTYPED]; + } vii_org; +}; + +#define vii_rdev vii_ftarea.rdev +#define vii_dotdot vii_ftarea.dotdot + +#define vii_immed vii_org.immed +#define vii_ext4 vii_org.ext4 +#define vii_typed vii_org.typed + +static inline struct vxfs_inode_info *VXFS_INO(struct inode *inode) +{ + return container_of(inode, struct vxfs_inode_info, vfs_inode); +} #endif /* _VXFS_INODE_H_ */ diff --git a/fs/freevxfs/vxfs_lookup.c b/fs/freevxfs/vxfs_lookup.c index 6d576b97f2c8..ce4785fd81c6 100644 --- a/fs/freevxfs/vxfs_lookup.c +++ b/fs/freevxfs/vxfs_lookup.c @@ -1,5 +1,6 @@ /* * Copyright (c) 2000-2001 Christoph Hellwig. + * Copyright (c) 2016 Krzysztof Blaszkowski * All rights reserved. * * Redistribution and use in source and binary forms, with or without @@ -61,33 +62,6 @@ const struct file_operations vxfs_dir_operations = { .iterate_shared = vxfs_readdir, }; -static inline u_long -dir_blocks(struct inode *ip) -{ - u_long bsize = ip->i_sb->s_blocksize; - return (ip->i_size + bsize - 1) & ~(bsize - 1); -} - -/* - * NOTE! unlike strncmp, vxfs_match returns 1 for success, 0 for failure. - * - * len <= VXFS_NAMELEN and de != NULL are guaranteed by caller. - */ -static inline int -vxfs_match(int len, const char * const name, struct vxfs_direct *de) -{ - if (len != de->d_namelen) - return 0; - if (!de->d_ino) - return 0; - return !memcmp(name, de->d_name, len); -} - -static inline struct vxfs_direct * -vxfs_next_entry(struct vxfs_direct *de) -{ - return ((struct vxfs_direct *)((char*)de + de->d_reclen)); -} /** * vxfs_find_entry - find a mathing directory entry for a dentry @@ -106,50 +80,64 @@ vxfs_next_entry(struct vxfs_direct *de) static struct vxfs_direct * vxfs_find_entry(struct inode *ip, struct dentry *dp, struct page **ppp) { - u_long npages, page, nblocks, pblocks, block; - u_long bsize = ip->i_sb->s_blocksize; - const char *name = dp->d_name.name; - int namelen = dp->d_name.len; - - npages = dir_pages(ip); - nblocks = dir_blocks(ip); - pblocks = VXFS_BLOCK_PER_PAGE(ip->i_sb); - - for (page = 0; page < npages; page++) { - caddr_t kaddr; - struct page *pp; + u_long bsize = ip->i_sb->s_blocksize; + const char *name = dp->d_name.name; + int namelen = dp->d_name.len; + loff_t limit = VXFS_DIRROUND(ip->i_size); + struct vxfs_direct *de_exit = NULL; + loff_t pos = 0; + struct vxfs_sb_info *sbi = VXFS_SBI(ip->i_sb); - pp = vxfs_get_page(ip->i_mapping, page); + while (pos < limit) { + struct page *pp; + char *kaddr; + int pg_ofs = pos & ~PAGE_MASK; + + pp = vxfs_get_page(ip->i_mapping, pos >> PAGE_SHIFT); if (IS_ERR(pp)) - continue; - kaddr = (caddr_t)page_address(pp); - - for (block = 0; block <= nblocks && block <= pblocks; block++) { - caddr_t baddr, limit; - struct vxfs_dirblk *dbp; - struct vxfs_direct *de; - - baddr = kaddr + (block * bsize); - limit = baddr + bsize - VXFS_DIRLEN(1); - - dbp = (struct vxfs_dirblk *)baddr; - de = (struct vxfs_direct *)(baddr + VXFS_DIRBLKOV(dbp)); - - for (; (caddr_t)de <= limit; de = vxfs_next_entry(de)) { - if (!de->d_reclen) - break; - if (!de->d_ino) - continue; - if (vxfs_match(namelen, name, de)) { - *ppp = pp; - return (de); - } + return NULL; + kaddr = (char *)page_address(pp); + + while (pg_ofs < PAGE_SIZE && pos < limit) { + struct vxfs_direct *de; + + if ((pos & (bsize - 1)) < 4) { + struct vxfs_dirblk *dbp = + (struct vxfs_dirblk *) + (kaddr + (pos & ~PAGE_MASK)); + int overhead = VXFS_DIRBLKOV(sbi, dbp); + + pos += overhead; + pg_ofs += overhead; + } + de = (struct vxfs_direct *)(kaddr + pg_ofs); + + if (!de->d_reclen) { + pos += bsize - 1; + pos &= ~(bsize - 1); + break; + } + + pg_ofs += fs16_to_cpu(sbi, de->d_reclen); + pos += fs16_to_cpu(sbi, de->d_reclen); + if (!de->d_ino) + continue; + + if (namelen != fs16_to_cpu(sbi, de->d_namelen)) + continue; + if (!memcmp(name, de->d_name, namelen)) { + *ppp = pp; + de_exit = de; + break; } } - vxfs_put_page(pp); + if (!de_exit) + vxfs_put_page(pp); + else + break; } - return NULL; + return de_exit; } /** @@ -173,7 +161,7 @@ vxfs_inode_by_name(struct inode *dip, struct dentry *dp) de = vxfs_find_entry(dip, dp, &pp); if (de) { - ino = de->d_ino; + ino = fs32_to_cpu(VXFS_SBI(dip->i_sb), de->d_ino); kunmap(pp); put_page(pp); } @@ -233,74 +221,80 @@ vxfs_readdir(struct file *fp, struct dir_context *ctx) struct inode *ip = file_inode(fp); struct super_block *sbp = ip->i_sb; u_long bsize = sbp->s_blocksize; - u_long page, npages, block, pblocks, nblocks, offset; - loff_t pos; + loff_t pos, limit; + struct vxfs_sb_info *sbi = VXFS_SBI(sbp); if (ctx->pos == 0) { if (!dir_emit_dot(fp, ctx)) - return 0; - ctx->pos = 1; + goto out; + ctx->pos++; } if (ctx->pos == 1) { if (!dir_emit(ctx, "..", 2, VXFS_INO(ip)->vii_dotdot, DT_DIR)) - return 0; - ctx->pos = 2; + goto out; + ctx->pos++; } - pos = ctx->pos - 2; - - if (pos > VXFS_DIRROUND(ip->i_size)) - return 0; - npages = dir_pages(ip); - nblocks = dir_blocks(ip); - pblocks = VXFS_BLOCK_PER_PAGE(sbp); + limit = VXFS_DIRROUND(ip->i_size); + if (ctx->pos > limit) + goto out; - page = pos >> PAGE_SHIFT; - offset = pos & ~PAGE_MASK; - block = (u_long)(pos >> sbp->s_blocksize_bits) % pblocks; + pos = ctx->pos & ~3L; - for (; page < npages; page++, block = 0) { - char *kaddr; - struct page *pp; + while (pos < limit) { + struct page *pp; + char *kaddr; + int pg_ofs = pos & ~PAGE_MASK; + int rc = 0; - pp = vxfs_get_page(ip->i_mapping, page); + pp = vxfs_get_page(ip->i_mapping, pos >> PAGE_SHIFT); if (IS_ERR(pp)) - continue; + return -ENOMEM; + kaddr = (char *)page_address(pp); - for (; block <= nblocks && block <= pblocks; block++) { - char *baddr, *limit; - struct vxfs_dirblk *dbp; - struct vxfs_direct *de; + while (pg_ofs < PAGE_SIZE && pos < limit) { + struct vxfs_direct *de; - baddr = kaddr + (block * bsize); - limit = baddr + bsize - VXFS_DIRLEN(1); - - dbp = (struct vxfs_dirblk *)baddr; - de = (struct vxfs_direct *) - (offset ? - (kaddr + offset) : - (baddr + VXFS_DIRBLKOV(dbp))); - - for (; (char *)de <= limit; de = vxfs_next_entry(de)) { - if (!de->d_reclen) - break; - if (!de->d_ino) - continue; - - offset = (char *)de - kaddr; - ctx->pos = ((page << PAGE_SHIFT) | offset) + 2; - if (!dir_emit(ctx, de->d_name, de->d_namelen, - de->d_ino, DT_UNKNOWN)) { - vxfs_put_page(pp); - return 0; - } + if ((pos & (bsize - 1)) < 4) { + struct vxfs_dirblk *dbp = + (struct vxfs_dirblk *) + (kaddr + (pos & ~PAGE_MASK)); + int overhead = VXFS_DIRBLKOV(sbi, dbp); + + pos += overhead; + pg_ofs += overhead; + } + de = (struct vxfs_direct *)(kaddr + pg_ofs); + + if (!de->d_reclen) { + pos += bsize - 1; + pos &= ~(bsize - 1); + break; + } + + pg_ofs += fs16_to_cpu(sbi, de->d_reclen); + pos += fs16_to_cpu(sbi, de->d_reclen); + if (!de->d_ino) + continue; + + rc = dir_emit(ctx, de->d_name, + fs16_to_cpu(sbi, de->d_namelen), + fs32_to_cpu(sbi, de->d_ino), + DT_UNKNOWN); + if (!rc) { + /* the dir entry was not read, fix pos. */ + pos -= fs16_to_cpu(sbi, de->d_reclen); + break; } - offset = 0; } vxfs_put_page(pp); - offset = 0; + if (!rc) + break; } - ctx->pos = ((page << PAGE_SHIFT) | offset) + 2; + + ctx->pos = pos | 2; + +out: return 0; } diff --git a/fs/freevxfs/vxfs_olt.c b/fs/freevxfs/vxfs_olt.c index 049500847903..813da6685151 100644 --- a/fs/freevxfs/vxfs_olt.c +++ b/fs/freevxfs/vxfs_olt.c @@ -43,14 +43,14 @@ static inline void vxfs_get_fshead(struct vxfs_oltfshead *fshp, struct vxfs_sb_info *infp) { BUG_ON(infp->vsi_fshino); - infp->vsi_fshino = fshp->olt_fsino[0]; + infp->vsi_fshino = fs32_to_cpu(infp, fshp->olt_fsino[0]); } static inline void vxfs_get_ilist(struct vxfs_oltilist *ilistp, struct vxfs_sb_info *infp) { BUG_ON(infp->vsi_iext); - infp->vsi_iext = ilistp->olt_iext[0]; + infp->vsi_iext = fs32_to_cpu(infp, ilistp->olt_iext[0]); } static inline u_long @@ -81,13 +81,12 @@ vxfs_read_olt(struct super_block *sbp, u_long bsize) struct vxfs_olt *op; char *oaddr, *eaddr; - bp = sb_bread(sbp, vxfs_oblock(sbp, infp->vsi_oltext, bsize)); if (!bp || !bp->b_data) goto fail; op = (struct vxfs_olt *)bp->b_data; - if (op->olt_magic != VXFS_OLT_MAGIC) { + if (fs32_to_cpu(infp, op->olt_magic) != VXFS_OLT_MAGIC) { printk(KERN_NOTICE "vxfs: ivalid olt magic number\n"); goto fail; } @@ -102,14 +101,14 @@ vxfs_read_olt(struct super_block *sbp, u_long bsize) goto fail; } - oaddr = bp->b_data + op->olt_size; + oaddr = bp->b_data + fs32_to_cpu(infp, op->olt_size); eaddr = bp->b_data + (infp->vsi_oltsize * sbp->s_blocksize); while (oaddr < eaddr) { struct vxfs_oltcommon *ocp = (struct vxfs_oltcommon *)oaddr; - switch (ocp->olt_type) { + switch (fs32_to_cpu(infp, ocp->olt_type)) { case VXFS_OLT_FSHEAD: vxfs_get_fshead((struct vxfs_oltfshead *)oaddr, infp); break; @@ -118,11 +117,11 @@ vxfs_read_olt(struct super_block *sbp, u_long bsize) break; } - oaddr += ocp->olt_size; + oaddr += fs32_to_cpu(infp, ocp->olt_size); } brelse(bp); - return 0; + return (infp->vsi_fshino && infp->vsi_iext) ? 0 : -EINVAL; fail: brelse(bp); diff --git a/fs/freevxfs/vxfs_olt.h b/fs/freevxfs/vxfs_olt.h index b7b3af502615..0c0b0c9fa557 100644 --- a/fs/freevxfs/vxfs_olt.h +++ b/fs/freevxfs/vxfs_olt.h @@ -63,83 +63,83 @@ enum { * the initial inode list, the fileset header or the device configuration. */ struct vxfs_olt { - u_int32_t olt_magic; /* magic number */ - u_int32_t olt_size; /* size of this entry */ - u_int32_t olt_checksum; /* checksum of extent */ - u_int32_t __unused1; /* ??? */ - u_int32_t olt_mtime; /* time of last mod. (sec) */ - u_int32_t olt_mutime; /* time of last mod. (usec) */ - u_int32_t olt_totfree; /* free space in OLT extent */ - vx_daddr_t olt_extents[2]; /* addr of this extent, replica */ - u_int32_t olt_esize; /* size of this extent */ - vx_daddr_t olt_next[2]; /* addr of next extent, replica */ - u_int32_t olt_nsize; /* size of next extent */ - u_int32_t __unused2; /* align to 8 byte boundary */ + __fs32 olt_magic; /* magic number */ + __fs32 olt_size; /* size of this entry */ + __fs32 olt_checksum; /* checksum of extent */ + __u32 __unused1; /* ??? */ + __fs32 olt_mtime; /* time of last mod. (sec) */ + __fs32 olt_mutime; /* time of last mod. (usec) */ + __fs32 olt_totfree; /* free space in OLT extent */ + __fs32 olt_extents[2]; /* addr of this extent, replica */ + __fs32 olt_esize; /* size of this extent */ + __fs32 olt_next[2]; /* addr of next extent, replica */ + __fs32 olt_nsize; /* size of next extent */ + __u32 __unused2; /* align to 8 byte boundary */ }; /* * VxFS common OLT entry (on disk). */ struct vxfs_oltcommon { - u_int32_t olt_type; /* type of this record */ - u_int32_t olt_size; /* size of this record */ + __fs32 olt_type; /* type of this record */ + __fs32 olt_size; /* size of this record */ }; /* * VxFS free OLT entry (on disk). */ struct vxfs_oltfree { - u_int32_t olt_type; /* type of this record */ - u_int32_t olt_fsize; /* size of this free record */ + __fs32 olt_type; /* type of this record */ + __fs32 olt_fsize; /* size of this free record */ }; /* * VxFS initial-inode list (on disk). */ struct vxfs_oltilist { - u_int32_t olt_type; /* type of this record */ - u_int32_t olt_size; /* size of this record */ - vx_ino_t olt_iext[2]; /* initial inode list, replica */ + __fs32 olt_type; /* type of this record */ + __fs32 olt_size; /* size of this record */ + __fs32 olt_iext[2]; /* initial inode list, replica */ }; /* * Current Usage Table */ struct vxfs_oltcut { - u_int32_t olt_type; /* type of this record */ - u_int32_t olt_size; /* size of this record */ - vx_ino_t olt_cutino; /* inode of current usage table */ - u_int32_t __pad; /* unused, 8 byte align */ + __fs32 olt_type; /* type of this record */ + __fs32 olt_size; /* size of this record */ + __fs32 olt_cutino; /* inode of current usage table */ + __u8 __pad; /* unused, 8 byte align */ }; /* * Inodes containing Superblock, Intent log and OLTs */ struct vxfs_oltsb { - u_int32_t olt_type; /* type of this record */ - u_int32_t olt_size; /* size of this record */ - vx_ino_t olt_sbino; /* inode of superblock file */ - u_int32_t __unused1; /* ??? */ - vx_ino_t olt_logino[2]; /* inode of log file,replica */ - vx_ino_t olt_oltino[2]; /* inode of OLT, replica */ + __fs32 olt_type; /* type of this record */ + __fs32 olt_size; /* size of this record */ + __fs32 olt_sbino; /* inode of superblock file */ + __u32 __unused1; /* ??? */ + __fs32 olt_logino[2]; /* inode of log file,replica */ + __fs32 olt_oltino[2]; /* inode of OLT, replica */ }; /* * Inode containing device configuration + it's replica */ struct vxfs_oltdev { - u_int32_t olt_type; /* type of this record */ - u_int32_t olt_size; /* size of this record */ - vx_ino_t olt_devino[2]; /* inode of device config files */ + __fs32 olt_type; /* type of this record */ + __fs32 olt_size; /* size of this record */ + __fs32 olt_devino[2]; /* inode of device config files */ }; /* * Fileset header */ struct vxfs_oltfshead { - u_int32_t olt_type; /* type number */ - u_int32_t olt_size; /* size of this record */ - vx_ino_t olt_fsino[2]; /* inodes of fileset header */ + __fs32 olt_type; /* type number */ + __fs32 olt_size; /* size of this record */ + __fs32 olt_fsino[2]; /* inodes of fileset header */ }; #endif /* _VXFS_OLT_H_ */ diff --git a/fs/freevxfs/vxfs_super.c b/fs/freevxfs/vxfs_super.c index 7ca8c75d50d3..455ce5b77e9b 100644 --- a/fs/freevxfs/vxfs_super.c +++ b/fs/freevxfs/vxfs_super.c @@ -1,5 +1,6 @@ /* * Copyright (c) 2000-2001 Christoph Hellwig. + * Copyright (c) 2016 Krzysztof Blaszkowski * All rights reserved. * * Redistribution and use in source and binary forms, with or without @@ -48,22 +49,11 @@ #include "vxfs_inode.h" -MODULE_AUTHOR("Christoph Hellwig"); +MODULE_AUTHOR("Christoph Hellwig, Krzysztof Blaszkowski"); MODULE_DESCRIPTION("Veritas Filesystem (VxFS) driver"); MODULE_LICENSE("Dual BSD/GPL"); - - -static void vxfs_put_super(struct super_block *); -static int vxfs_statfs(struct dentry *, struct kstatfs *); -static int vxfs_remount(struct super_block *, int *, char *); - -static const struct super_operations vxfs_super_ops = { - .evict_inode = vxfs_evict_inode, - .put_super = vxfs_put_super, - .statfs = vxfs_statfs, - .remount_fs = vxfs_remount, -}; +static struct kmem_cache *vxfs_inode_cachep; /** * vxfs_put_super - free superblock resources @@ -79,9 +69,9 @@ vxfs_put_super(struct super_block *sbp) { struct vxfs_sb_info *infp = VXFS_SBI(sbp); - vxfs_put_fake_inode(infp->vsi_fship); - vxfs_put_fake_inode(infp->vsi_ilist); - vxfs_put_fake_inode(infp->vsi_stilist); + iput(infp->vsi_fship); + iput(infp->vsi_ilist); + iput(infp->vsi_stilist); brelse(infp->vsi_bp); kfree(infp); @@ -109,14 +99,15 @@ static int vxfs_statfs(struct dentry *dentry, struct kstatfs *bufp) { struct vxfs_sb_info *infp = VXFS_SBI(dentry->d_sb); + struct vxfs_sb *raw_sb = infp->vsi_raw; bufp->f_type = VXFS_SUPER_MAGIC; bufp->f_bsize = dentry->d_sb->s_blocksize; - bufp->f_blocks = infp->vsi_raw->vs_dsize; - bufp->f_bfree = infp->vsi_raw->vs_free; + bufp->f_blocks = fs32_to_cpu(infp, raw_sb->vs_dsize); + bufp->f_bfree = fs32_to_cpu(infp, raw_sb->vs_free); bufp->f_bavail = 0; bufp->f_files = 0; - bufp->f_ffree = infp->vsi_raw->vs_ifree; + bufp->f_ffree = fs32_to_cpu(infp, raw_sb->vs_ifree); bufp->f_namelen = VXFS_NAMELEN; return 0; @@ -129,6 +120,81 @@ static int vxfs_remount(struct super_block *sb, int *flags, char *data) return 0; } +static struct inode *vxfs_alloc_inode(struct super_block *sb) +{ + struct vxfs_inode_info *vi; + + vi = kmem_cache_alloc(vxfs_inode_cachep, GFP_KERNEL); + if (!vi) + return NULL; + inode_init_once(&vi->vfs_inode); + return &vi->vfs_inode; +} + +static void vxfs_i_callback(struct rcu_head *head) +{ + struct inode *inode = container_of(head, struct inode, i_rcu); + + kmem_cache_free(vxfs_inode_cachep, VXFS_INO(inode)); +} + +static void vxfs_destroy_inode(struct inode *inode) +{ + call_rcu(&inode->i_rcu, vxfs_i_callback); +} + +static const struct super_operations vxfs_super_ops = { + .alloc_inode = vxfs_alloc_inode, + .destroy_inode = vxfs_destroy_inode, + .evict_inode = vxfs_evict_inode, + .put_super = vxfs_put_super, + .statfs = vxfs_statfs, + .remount_fs = vxfs_remount, +}; + +static int vxfs_try_sb_magic(struct super_block *sbp, int silent, + unsigned blk, __fs32 magic) +{ + struct buffer_head *bp; + struct vxfs_sb *rsbp; + struct vxfs_sb_info *infp = VXFS_SBI(sbp); + int rc = -ENOMEM; + + bp = sb_bread(sbp, blk); + do { + if (!bp || !buffer_mapped(bp)) { + if (!silent) { + printk(KERN_WARNING + "vxfs: unable to read disk superblock at %u\n", + blk); + } + break; + } + + rc = -EINVAL; + rsbp = (struct vxfs_sb *)bp->b_data; + if (rsbp->vs_magic != magic) { + if (!silent) + printk(KERN_NOTICE + "vxfs: WRONG superblock magic %08x at %u\n", + rsbp->vs_magic, blk); + break; + } + + rc = 0; + infp->vsi_raw = rsbp; + infp->vsi_bp = bp; + } while (0); + + if (rc) { + infp->vsi_raw = NULL; + infp->vsi_bp = NULL; + brelse(bp); + } + + return rc; +} + /** * vxfs_read_super - read superblock into memory and initialize filesystem * @sbp: VFS superblock (to fill) @@ -149,10 +215,10 @@ static int vxfs_fill_super(struct super_block *sbp, void *dp, int silent) { struct vxfs_sb_info *infp; struct vxfs_sb *rsbp; - struct buffer_head *bp = NULL; u_long bsize; struct inode *root; int ret = -EINVAL; + u32 j; sbp->s_flags |= MS_RDONLY; @@ -168,42 +234,43 @@ static int vxfs_fill_super(struct super_block *sbp, void *dp, int silent) goto out; } - bp = sb_bread(sbp, 1); - if (!bp || !buffer_mapped(bp)) { - if (!silent) { - printk(KERN_WARNING - "vxfs: unable to read disk superblock\n"); - } - goto out; - } + sbp->s_op = &vxfs_super_ops; + sbp->s_fs_info = infp; - rsbp = (struct vxfs_sb *)bp->b_data; - if (rsbp->vs_magic != VXFS_SUPER_MAGIC) { + if (!vxfs_try_sb_magic(sbp, silent, 1, + (__force __fs32)cpu_to_le32(VXFS_SUPER_MAGIC))) { + /* Unixware, x86 */ + infp->byte_order = VXFS_BO_LE; + } else if (!vxfs_try_sb_magic(sbp, silent, 8, + (__force __fs32)cpu_to_be32(VXFS_SUPER_MAGIC))) { + /* HP-UX, parisc */ + infp->byte_order = VXFS_BO_BE; + } else { if (!silent) - printk(KERN_NOTICE "vxfs: WRONG superblock magic\n"); + printk(KERN_NOTICE "vxfs: can't find superblock.\n"); goto out; } - if ((rsbp->vs_version < 2 || rsbp->vs_version > 4) && !silent) { - printk(KERN_NOTICE "vxfs: unsupported VxFS version (%d)\n", - rsbp->vs_version); + rsbp = infp->vsi_raw; + j = fs32_to_cpu(infp, rsbp->vs_version); + if ((j < 2 || j > 4) && !silent) { + printk(KERN_NOTICE "vxfs: unsupported VxFS version (%d)\n", j); goto out; } #ifdef DIAGNOSTIC - printk(KERN_DEBUG "vxfs: supported VxFS version (%d)\n", rsbp->vs_version); - printk(KERN_DEBUG "vxfs: blocksize: %d\n", rsbp->vs_bsize); + printk(KERN_DEBUG "vxfs: supported VxFS version (%d)\n", j); + printk(KERN_DEBUG "vxfs: blocksize: %d\n", + fs32_to_cpu(infp, rsbp->vs_bsize)); #endif - sbp->s_magic = rsbp->vs_magic; - sbp->s_fs_info = infp; + sbp->s_magic = fs32_to_cpu(infp, rsbp->vs_magic); - infp->vsi_raw = rsbp; - infp->vsi_bp = bp; - infp->vsi_oltext = rsbp->vs_oltext[0]; - infp->vsi_oltsize = rsbp->vs_oltsize; + infp->vsi_oltext = fs32_to_cpu(infp, rsbp->vs_oltext[0]); + infp->vsi_oltsize = fs32_to_cpu(infp, rsbp->vs_oltsize); - if (!sb_set_blocksize(sbp, rsbp->vs_bsize)) { + j = fs32_to_cpu(infp, rsbp->vs_bsize); + if (!sb_set_blocksize(sbp, j)) { printk(KERN_WARNING "vxfs: unable to set final block size\n"); goto out; } @@ -218,7 +285,6 @@ static int vxfs_fill_super(struct super_block *sbp, void *dp, int silent) goto out; } - sbp->s_op = &vxfs_super_ops; root = vxfs_iget(sbp, VXFS_ROOT_INO); if (IS_ERR(root)) { ret = PTR_ERR(root); @@ -233,11 +299,11 @@ static int vxfs_fill_super(struct super_block *sbp, void *dp, int silent) return 0; out_free_ilist: - vxfs_put_fake_inode(infp->vsi_fship); - vxfs_put_fake_inode(infp->vsi_ilist); - vxfs_put_fake_inode(infp->vsi_stilist); + iput(infp->vsi_fship); + iput(infp->vsi_ilist); + iput(infp->vsi_stilist); out: - brelse(bp); + brelse(infp->vsi_bp); kfree(infp); return ret; } diff --git a/fs/fs-writeback.c b/fs/fs-writeback.c index fe7e83a45eff..56c8fda436c0 100644 --- a/fs/fs-writeback.c +++ b/fs/fs-writeback.c @@ -981,6 +981,42 @@ void inode_io_list_del(struct inode *inode) } /* + * mark an inode as under writeback on the sb + */ +void sb_mark_inode_writeback(struct inode *inode) +{ + struct super_block *sb = inode->i_sb; + unsigned long flags; + + if (list_empty(&inode->i_wb_list)) { + spin_lock_irqsave(&sb->s_inode_wblist_lock, flags); + if (list_empty(&inode->i_wb_list)) { + list_add_tail(&inode->i_wb_list, &sb->s_inodes_wb); + trace_sb_mark_inode_writeback(inode); + } + spin_unlock_irqrestore(&sb->s_inode_wblist_lock, flags); + } +} + +/* + * clear an inode as under writeback on the sb + */ +void sb_clear_inode_writeback(struct inode *inode) +{ + struct super_block *sb = inode->i_sb; + unsigned long flags; + + if (!list_empty(&inode->i_wb_list)) { + spin_lock_irqsave(&sb->s_inode_wblist_lock, flags); + if (!list_empty(&inode->i_wb_list)) { + list_del_init(&inode->i_wb_list); + trace_sb_clear_inode_writeback(inode); + } + spin_unlock_irqrestore(&sb->s_inode_wblist_lock, flags); + } +} + +/* * Redirty an inode: set its when-it-was dirtied timestamp and move it to the * furthest end of its superblock's dirty-inode list. * @@ -1771,8 +1807,8 @@ static struct wb_writeback_work *get_next_work_item(struct bdi_writeback *wb) */ static unsigned long get_nr_dirty_pages(void) { - return global_page_state(NR_FILE_DIRTY) + - global_page_state(NR_UNSTABLE_NFS) + + return global_node_page_state(NR_FILE_DIRTY) + + global_node_page_state(NR_UNSTABLE_NFS) + get_nr_dirty_inodes(); } @@ -2154,7 +2190,7 @@ EXPORT_SYMBOL(__mark_inode_dirty); */ static void wait_sb_inodes(struct super_block *sb) { - struct inode *inode, *old_inode = NULL; + LIST_HEAD(sync_list); /* * We need to be protected against the filesystem going from @@ -2163,38 +2199,60 @@ static void wait_sb_inodes(struct super_block *sb) WARN_ON(!rwsem_is_locked(&sb->s_umount)); mutex_lock(&sb->s_sync_lock); - spin_lock(&sb->s_inode_list_lock); /* - * Data integrity sync. Must wait for all pages under writeback, - * because there may have been pages dirtied before our sync - * call, but which had writeout started before we write it out. - * In which case, the inode may not be on the dirty list, but - * we still have to wait for that writeout. + * Splice the writeback list onto a temporary list to avoid waiting on + * inodes that have started writeback after this point. + * + * Use rcu_read_lock() to keep the inodes around until we have a + * reference. s_inode_wblist_lock protects sb->s_inodes_wb as well as + * the local list because inodes can be dropped from either by writeback + * completion. + */ + rcu_read_lock(); + spin_lock_irq(&sb->s_inode_wblist_lock); + list_splice_init(&sb->s_inodes_wb, &sync_list); + + /* + * Data integrity sync. Must wait for all pages under writeback, because + * there may have been pages dirtied before our sync call, but which had + * writeout started before we write it out. In which case, the inode + * may not be on the dirty list, but we still have to wait for that + * writeout. */ - list_for_each_entry(inode, &sb->s_inodes, i_sb_list) { + while (!list_empty(&sync_list)) { + struct inode *inode = list_first_entry(&sync_list, struct inode, + i_wb_list); struct address_space *mapping = inode->i_mapping; + /* + * Move each inode back to the wb list before we drop the lock + * to preserve consistency between i_wb_list and the mapping + * writeback tag. Writeback completion is responsible to remove + * the inode from either list once the writeback tag is cleared. + */ + list_move_tail(&inode->i_wb_list, &sb->s_inodes_wb); + + /* + * The mapping can appear untagged while still on-list since we + * do not have the mapping lock. Skip it here, wb completion + * will remove it. + */ + if (!mapping_tagged(mapping, PAGECACHE_TAG_WRITEBACK)) + continue; + + spin_unlock_irq(&sb->s_inode_wblist_lock); + spin_lock(&inode->i_lock); - if ((inode->i_state & (I_FREEING|I_WILL_FREE|I_NEW)) || - (mapping->nrpages == 0)) { + if (inode->i_state & (I_FREEING|I_WILL_FREE|I_NEW)) { spin_unlock(&inode->i_lock); + + spin_lock_irq(&sb->s_inode_wblist_lock); continue; } __iget(inode); spin_unlock(&inode->i_lock); - spin_unlock(&sb->s_inode_list_lock); - - /* - * We hold a reference to 'inode' so it couldn't have been - * removed from s_inodes list while we dropped the - * s_inode_list_lock. We cannot iput the inode now as we can - * be holding the last reference and we cannot iput it under - * s_inode_list_lock. So we keep the reference and iput it - * later. - */ - iput(old_inode); - old_inode = inode; + rcu_read_unlock(); /* * We keep the error status of individual mapping so that @@ -2205,10 +2263,13 @@ static void wait_sb_inodes(struct super_block *sb) cond_resched(); - spin_lock(&sb->s_inode_list_lock); + iput(inode); + + rcu_read_lock(); + spin_lock_irq(&sb->s_inode_wblist_lock); } - spin_unlock(&sb->s_inode_list_lock); - iput(old_inode); + spin_unlock_irq(&sb->s_inode_wblist_lock); + rcu_read_unlock(); mutex_unlock(&sb->s_sync_lock); } diff --git a/fs/fscache/histogram.c b/fs/fscache/histogram.c index 7d637e2335fd..15a3d042247e 100644 --- a/fs/fscache/histogram.c +++ b/fs/fscache/histogram.c @@ -99,7 +99,6 @@ static int fscache_histogram_open(struct inode *inode, struct file *file) } const struct file_operations fscache_histogram_fops = { - .owner = THIS_MODULE, .open = fscache_histogram_open, .read = seq_read, .llseek = seq_lseek, diff --git a/fs/fscache/object-list.c b/fs/fscache/object-list.c index 6b028b7c4250..5d5ddaa84b21 100644 --- a/fs/fscache/object-list.c +++ b/fs/fscache/object-list.c @@ -404,7 +404,6 @@ static int fscache_objlist_release(struct inode *inode, struct file *file) } const struct file_operations fscache_objlist_fops = { - .owner = THIS_MODULE, .open = fscache_objlist_open, .read = seq_read, .llseek = seq_lseek, diff --git a/fs/fscache/stats.c b/fs/fscache/stats.c index 7cfa0aacdf6d..7ac6e839b065 100644 --- a/fs/fscache/stats.c +++ b/fs/fscache/stats.c @@ -295,7 +295,6 @@ static int fscache_stats_open(struct inode *inode, struct file *file) } const struct file_operations fscache_stats_fops = { - .owner = THIS_MODULE, .open = fscache_stats_open, .read = seq_read, .llseek = seq_lseek, diff --git a/fs/fuse/dev.c b/fs/fuse/dev.c index cbece1221417..a94d2ed81ab4 100644 --- a/fs/fuse/dev.c +++ b/fs/fuse/dev.c @@ -99,19 +99,6 @@ void fuse_request_free(struct fuse_req *req) kmem_cache_free(fuse_req_cachep, req); } -static void block_sigs(sigset_t *oldset) -{ - sigset_t mask; - - siginitsetinv(&mask, sigmask(SIGKILL)); - sigprocmask(SIG_BLOCK, &mask, oldset); -} - -static void restore_sigs(sigset_t *oldset) -{ - sigprocmask(SIG_SETMASK, oldset, NULL); -} - void __fuse_get_request(struct fuse_req *req) { atomic_inc(&req->count); @@ -151,15 +138,9 @@ static struct fuse_req *__fuse_get_req(struct fuse_conn *fc, unsigned npages, atomic_inc(&fc->num_waiting); if (fuse_block_alloc(fc, for_background)) { - sigset_t oldset; - int intr; - - block_sigs(&oldset); - intr = wait_event_interruptible_exclusive(fc->blocked_waitq, - !fuse_block_alloc(fc, for_background)); - restore_sigs(&oldset); err = -EINTR; - if (intr) + if (wait_event_killable_exclusive(fc->blocked_waitq, + !fuse_block_alloc(fc, for_background))) goto out; } /* Matches smp_wmb() in fuse_set_initialized() */ @@ -446,14 +427,9 @@ static void request_wait_answer(struct fuse_conn *fc, struct fuse_req *req) } if (!test_bit(FR_FORCE, &req->flags)) { - sigset_t oldset; - /* Only fatal signals may interrupt this */ - block_sigs(&oldset); - err = wait_event_interruptible(req->waitq, + err = wait_event_killable(req->waitq, test_bit(FR_FINISHED, &req->flags)); - restore_sigs(&oldset); - if (!err) return; @@ -1525,7 +1501,6 @@ static int fuse_notify_inval_entry(struct fuse_conn *fc, unsigned int size, goto err; fuse_copy_finish(cs); buf[outarg.namelen] = 0; - name.hash = full_name_hash(name.name, name.len); down_read(&fc->killsb); err = -ENOENT; @@ -1576,7 +1551,6 @@ static int fuse_notify_delete(struct fuse_conn *fc, unsigned int size, goto err; fuse_copy_finish(cs); buf[outarg.namelen] = 0; - name.hash = full_name_hash(name.name, name.len); down_read(&fc->killsb); err = -ENOENT; diff --git a/fs/fuse/dir.c b/fs/fuse/dir.c index cca7b048c07b..5f1627725791 100644 --- a/fs/fuse/dir.c +++ b/fs/fuse/dir.c @@ -955,6 +955,7 @@ int fuse_reverse_inval_entry(struct super_block *sb, u64 parent_nodeid, if (!dir) goto unlock; + name->hash = full_name_hash(dir, name->name, name->len); entry = d_lookup(dir, name); dput(dir); if (!entry) @@ -1204,7 +1205,7 @@ static int fuse_direntplus_link(struct file *file, fc = get_fuse_conn(dir); - name.hash = full_name_hash(name.name, name.len); + name.hash = full_name_hash(parent, name.name, name.len); dentry = d_lookup(parent, &name); if (!dentry) { retry: diff --git a/fs/fuse/file.c b/fs/fuse/file.c index 9154f8679024..f394aff59c36 100644 --- a/fs/fuse/file.c +++ b/fs/fuse/file.c @@ -417,6 +417,10 @@ static int fuse_flush(struct file *file, fl_owner_t id) fuse_sync_writes(inode); inode_unlock(inode); + err = filemap_check_errors(file->f_mapping); + if (err) + return err; + req = fuse_get_req_nofail_nopages(fc, file); memset(&inarg, 0, sizeof(inarg)); inarg.fh = ff->fh; @@ -462,6 +466,16 @@ int fuse_fsync_common(struct file *file, loff_t start, loff_t end, goto out; fuse_sync_writes(inode); + + /* + * Due to implementation of fuse writeback + * filemap_write_and_wait_range() does not catch errors. + * We have to do this directly after fuse_sync_writes() + */ + err = filemap_check_errors(file->f_mapping); + if (err) + goto out; + err = sync_inode_metadata(inode, 1); if (err) goto out; @@ -562,7 +576,6 @@ static ssize_t fuse_get_res_by_io(struct fuse_io_priv *io) */ static void fuse_aio_complete(struct fuse_io_priv *io, int err, ssize_t pos) { - bool is_sync = is_sync_kiocb(io->iocb); int left; spin_lock(&io->lock); @@ -572,11 +585,11 @@ static void fuse_aio_complete(struct fuse_io_priv *io, int err, ssize_t pos) io->bytes = pos; left = --io->reqs; - if (!left && is_sync) + if (!left && io->blocking) complete(io->done); spin_unlock(&io->lock); - if (!left && !is_sync) { + if (!left && !io->blocking) { ssize_t res = fuse_get_res_by_io(io); if (res >= 0) { @@ -1452,7 +1465,7 @@ static void fuse_writepage_finish(struct fuse_conn *fc, struct fuse_req *req) list_del(&req->writepages_entry); for (i = 0; i < req->num_pages; i++) { dec_wb_stat(&bdi->wb, WB_WRITEBACK); - dec_zone_page_state(req->pages[i], NR_WRITEBACK_TEMP); + dec_node_page_state(req->pages[i], NR_WRITEBACK_TEMP); wb_writeout_inc(&bdi->wb); } wake_up(&fi->page_waitq); @@ -1642,7 +1655,7 @@ static int fuse_writepage_locked(struct page *page) req->inode = inode; inc_wb_stat(&inode_to_bdi(inode)->wb, WB_WRITEBACK); - inc_zone_page_state(tmp_page, NR_WRITEBACK_TEMP); + inc_node_page_state(tmp_page, NR_WRITEBACK_TEMP); spin_lock(&fc->lock); list_add(&req->writepages_entry, &fi->writepages); @@ -1756,7 +1769,7 @@ static bool fuse_writepage_in_flight(struct fuse_req *new_req, spin_unlock(&fc->lock); dec_wb_stat(&bdi->wb, WB_WRITEBACK); - dec_zone_page_state(page, NR_WRITEBACK_TEMP); + dec_node_page_state(page, NR_WRITEBACK_TEMP); wb_writeout_inc(&bdi->wb); fuse_writepage_free(fc, new_req); fuse_request_free(new_req); @@ -1855,7 +1868,7 @@ static int fuse_writepages_fill(struct page *page, req->page_descs[req->num_pages].length = PAGE_SIZE; inc_wb_stat(&inode_to_bdi(inode)->wb, WB_WRITEBACK); - inc_zone_page_state(tmp_page, NR_WRITEBACK_TEMP); + inc_node_page_state(tmp_page, NR_WRITEBACK_TEMP); err = 0; if (is_writeback && fuse_writepage_in_flight(req, page)) { @@ -2850,7 +2863,6 @@ fuse_direct_IO(struct kiocb *iocb, struct iov_iter *iter) size_t count = iov_iter_count(iter); loff_t offset = iocb->ki_pos; struct fuse_io_priv *io; - bool is_sync = is_sync_kiocb(iocb); pos = offset; inode = file->f_mapping->host; @@ -2885,17 +2897,16 @@ fuse_direct_IO(struct kiocb *iocb, struct iov_iter *iter) */ io->async = async_dio; io->iocb = iocb; + io->blocking = is_sync_kiocb(iocb); /* - * We cannot asynchronously extend the size of a file. We have no method - * to wait on real async I/O requests, so we must submit this request - * synchronously. + * We cannot asynchronously extend the size of a file. + * In such case the aio will behave exactly like sync io. */ - if (!is_sync && (offset + count > i_size) && - iov_iter_rw(iter) == WRITE) - io->async = false; + if ((offset + count > i_size) && iov_iter_rw(iter) == WRITE) + io->blocking = true; - if (io->async && is_sync) { + if (io->async && io->blocking) { /* * Additional reference to keep io around after * calling fuse_aio_complete() @@ -2915,7 +2926,7 @@ fuse_direct_IO(struct kiocb *iocb, struct iov_iter *iter) fuse_aio_complete(io, ret < 0 ? ret : 0, -1); /* we have a non-extending, async request, so return */ - if (!is_sync) + if (!io->blocking) return -EIOCBQUEUED; wait_for_completion(&wait); diff --git a/fs/fuse/fuse_i.h b/fs/fuse/fuse_i.h index 929c383432b0..5db5d24f91a5 100644 --- a/fs/fuse/fuse_i.h +++ b/fs/fuse/fuse_i.h @@ -259,6 +259,7 @@ struct fuse_io_priv { struct kiocb *iocb; struct file *file; struct completion *done; + bool blocking; }; #define FUSE_IO_PRIV_SYNC(f) \ diff --git a/fs/fuse/inode.c b/fs/fuse/inode.c index 9961d8432ce3..9b7cb37b4ba8 100644 --- a/fs/fuse/inode.c +++ b/fs/fuse/inode.c @@ -942,7 +942,7 @@ static void fuse_send_init(struct fuse_conn *fc, struct fuse_req *req) arg->flags |= FUSE_ASYNC_READ | FUSE_POSIX_LOCKS | FUSE_ATOMIC_O_TRUNC | FUSE_EXPORT_SUPPORT | FUSE_BIG_WRITES | FUSE_DONT_MASK | FUSE_SPLICE_WRITE | FUSE_SPLICE_MOVE | FUSE_SPLICE_READ | - FUSE_FLOCK_LOCKS | FUSE_IOCTL_DIR | FUSE_AUTO_INVAL_DATA | + FUSE_FLOCK_LOCKS | FUSE_HAS_IOCTL_DIR | FUSE_AUTO_INVAL_DATA | FUSE_DO_READDIRPLUS | FUSE_READDIRPLUS_AUTO | FUSE_ASYNC_DIO | FUSE_WRITEBACK_CACHE | FUSE_NO_OPEN_SUPPORT | FUSE_PARALLEL_DIROPS; diff --git a/fs/hfs/inode.c b/fs/hfs/inode.c index 8eed66af5b82..02a3845363f7 100644 --- a/fs/hfs/inode.c +++ b/fs/hfs/inode.c @@ -128,7 +128,7 @@ static ssize_t hfs_direct_IO(struct kiocb *iocb, struct iov_iter *iter) { struct file *file = iocb->ki_filp; struct address_space *mapping = file->f_mapping; - struct inode *inode = file_inode(file)->i_mapping->host; + struct inode *inode = mapping->host; size_t count = iov_iter_count(iter); ssize_t ret; diff --git a/fs/hfs/string.c b/fs/hfs/string.c index 85b610c3909f..ec9f164c35a5 100644 --- a/fs/hfs/string.c +++ b/fs/hfs/string.c @@ -59,7 +59,7 @@ int hfs_hash_dentry(const struct dentry *dentry, struct qstr *this) if (len > HFS_NAMELEN) len = HFS_NAMELEN; - hash = init_name_hash(); + hash = init_name_hash(dentry); for (; len; len--) hash = partial_name_hash(caseorder[*name++], hash); this->hash = end_name_hash(hash); diff --git a/fs/hfsplus/inode.c b/fs/hfsplus/inode.c index ef9fefe364a6..19462d773fe2 100644 --- a/fs/hfsplus/inode.c +++ b/fs/hfsplus/inode.c @@ -126,7 +126,7 @@ static ssize_t hfsplus_direct_IO(struct kiocb *iocb, struct iov_iter *iter) { struct file *file = iocb->ki_filp; struct address_space *mapping = file->f_mapping; - struct inode *inode = file_inode(file)->i_mapping->host; + struct inode *inode = mapping->host; size_t count = iov_iter_count(iter); ssize_t ret; diff --git a/fs/hfsplus/unicode.c b/fs/hfsplus/unicode.c index e8ef121a4d8b..c13c8a240be3 100644 --- a/fs/hfsplus/unicode.c +++ b/fs/hfsplus/unicode.c @@ -346,7 +346,7 @@ int hfsplus_hash_dentry(const struct dentry *dentry, struct qstr *str) casefold = test_bit(HFSPLUS_SB_CASEFOLD, &HFSPLUS_SB(sb)->flags); decompose = !test_bit(HFSPLUS_SB_NODECOMPOSE, &HFSPLUS_SB(sb)->flags); - hash = init_name_hash(); + hash = init_name_hash(dentry); astr = str->name; len = str->len; while (len > 0) { diff --git a/fs/hpfs/dentry.c b/fs/hpfs/dentry.c index fa27980f2229..60e6d334d79a 100644 --- a/fs/hpfs/dentry.c +++ b/fs/hpfs/dentry.c @@ -26,7 +26,7 @@ static int hpfs_hash_dentry(const struct dentry *dentry, struct qstr *qstr) /*return -ENOENT;*/ x: - hash = init_name_hash(); + hash = init_name_hash(dentry); for (i = 0; i < l; i++) hash = partial_name_hash(hpfs_upcase(hpfs_sb(dentry->d_sb)->sb_cp_table,qstr->name[i]), hash); qstr->hash = end_name_hash(hash); diff --git a/fs/inode.c b/fs/inode.c index 4ccbc21b30ce..e171f7b5f9e4 100644 --- a/fs/inode.c +++ b/fs/inode.c @@ -365,6 +365,7 @@ void inode_init_once(struct inode *inode) INIT_HLIST_NODE(&inode->i_hash); INIT_LIST_HEAD(&inode->i_devices); INIT_LIST_HEAD(&inode->i_io_list); + INIT_LIST_HEAD(&inode->i_wb_list); INIT_LIST_HEAD(&inode->i_lru); address_space_init_once(&inode->i_data); i_size_ordered_init(inode); @@ -507,6 +508,7 @@ void clear_inode(struct inode *inode) BUG_ON(!list_empty(&inode->i_data.private_list)); BUG_ON(!(inode->i_state & I_FREEING)); BUG_ON(inode->i_state & I_CLEAR); + BUG_ON(!list_empty(&inode->i_wb_list)); /* don't need i_lock here, no concurrent mods to i_state */ inode->i_state = I_FREEING | I_CLEAR; } diff --git a/fs/internal.h b/fs/internal.h index f57ced528cde..cef0913e5d41 100644 --- a/fs/internal.h +++ b/fs/internal.h @@ -11,6 +11,7 @@ struct super_block; struct file_system_type; +struct iomap; struct linux_binprm; struct path; struct mount; @@ -39,6 +40,8 @@ static inline int __sync_blockdev(struct block_device *bdev, int wait) * buffer.c */ extern void guard_bio_eod(int rw, struct bio *bio); +extern int __block_write_begin_int(struct page *page, loff_t pos, unsigned len, + get_block_t *get_block, struct iomap *iomap); /* * char_dev.c diff --git a/fs/ioctl.c b/fs/ioctl.c index 116a333e9c77..0f56deb24ce6 100644 --- a/fs/ioctl.c +++ b/fs/ioctl.c @@ -590,6 +590,7 @@ static long ioctl_file_dedupe_range(struct file *file, void __user *arg) goto out; } + same->dest_count = count; ret = vfs_dedupe_file_range(file, same); if (ret) goto out; diff --git a/fs/iomap.c b/fs/iomap.c new file mode 100644 index 000000000000..48141b8eff5f --- /dev/null +++ b/fs/iomap.c @@ -0,0 +1,497 @@ +/* + * Copyright (C) 2010 Red Hat, Inc. + * Copyright (c) 2016 Christoph Hellwig. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms and conditions of the GNU General Public License, + * version 2, as published by the Free Software Foundation. + * + * This program is distributed in the hope it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + */ +#include <linux/module.h> +#include <linux/compiler.h> +#include <linux/fs.h> +#include <linux/iomap.h> +#include <linux/uaccess.h> +#include <linux/gfp.h> +#include <linux/mm.h> +#include <linux/swap.h> +#include <linux/pagemap.h> +#include <linux/file.h> +#include <linux/uio.h> +#include <linux/backing-dev.h> +#include <linux/buffer_head.h> +#include <linux/dax.h> +#include "internal.h" + +typedef loff_t (*iomap_actor_t)(struct inode *inode, loff_t pos, loff_t len, + void *data, struct iomap *iomap); + +/* + * Execute a iomap write on a segment of the mapping that spans a + * contiguous range of pages that have identical block mapping state. + * + * This avoids the need to map pages individually, do individual allocations + * for each page and most importantly avoid the need for filesystem specific + * locking per page. Instead, all the operations are amortised over the entire + * range of pages. It is assumed that the filesystems will lock whatever + * resources they require in the iomap_begin call, and release them in the + * iomap_end call. + */ +static loff_t +iomap_apply(struct inode *inode, loff_t pos, loff_t length, unsigned flags, + struct iomap_ops *ops, void *data, iomap_actor_t actor) +{ + struct iomap iomap = { 0 }; + loff_t written = 0, ret; + + /* + * Need to map a range from start position for length bytes. This can + * span multiple pages - it is only guaranteed to return a range of a + * single type of pages (e.g. all into a hole, all mapped or all + * unwritten). Failure at this point has nothing to undo. + * + * If allocation is required for this range, reserve the space now so + * that the allocation is guaranteed to succeed later on. Once we copy + * the data into the page cache pages, then we cannot fail otherwise we + * expose transient stale data. If the reserve fails, we can safely + * back out at this point as there is nothing to undo. + */ + ret = ops->iomap_begin(inode, pos, length, flags, &iomap); + if (ret) + return ret; + if (WARN_ON(iomap.offset > pos)) + return -EIO; + + /* + * Cut down the length to the one actually provided by the filesystem, + * as it might not be able to give us the whole size that we requested. + */ + if (iomap.offset + iomap.length < pos + length) + length = iomap.offset + iomap.length - pos; + + /* + * Now that we have guaranteed that the space allocation will succeed. + * we can do the copy-in page by page without having to worry about + * failures exposing transient data. + */ + written = actor(inode, pos, length, data, &iomap); + + /* + * Now the data has been copied, commit the range we've copied. This + * should not fail unless the filesystem has had a fatal error. + */ + ret = ops->iomap_end(inode, pos, length, written > 0 ? written : 0, + flags, &iomap); + + return written ? written : ret; +} + +static void +iomap_write_failed(struct inode *inode, loff_t pos, unsigned len) +{ + loff_t i_size = i_size_read(inode); + + /* + * Only truncate newly allocated pages beyoned EOF, even if the + * write started inside the existing inode size. + */ + if (pos + len > i_size) + truncate_pagecache_range(inode, max(pos, i_size), pos + len); +} + +static int +iomap_write_begin(struct inode *inode, loff_t pos, unsigned len, unsigned flags, + struct page **pagep, struct iomap *iomap) +{ + pgoff_t index = pos >> PAGE_SHIFT; + struct page *page; + int status = 0; + + BUG_ON(pos + len > iomap->offset + iomap->length); + + page = grab_cache_page_write_begin(inode->i_mapping, index, flags); + if (!page) + return -ENOMEM; + + status = __block_write_begin_int(page, pos, len, NULL, iomap); + if (unlikely(status)) { + unlock_page(page); + put_page(page); + page = NULL; + + iomap_write_failed(inode, pos, len); + } + + *pagep = page; + return status; +} + +static int +iomap_write_end(struct inode *inode, loff_t pos, unsigned len, + unsigned copied, struct page *page) +{ + int ret; + + ret = generic_write_end(NULL, inode->i_mapping, pos, len, + copied, page, NULL); + if (ret < len) + iomap_write_failed(inode, pos, len); + return ret; +} + +static loff_t +iomap_write_actor(struct inode *inode, loff_t pos, loff_t length, void *data, + struct iomap *iomap) +{ + struct iov_iter *i = data; + long status = 0; + ssize_t written = 0; + unsigned int flags = AOP_FLAG_NOFS; + + /* + * Copies from kernel address space cannot fail (NFSD is a big user). + */ + if (!iter_is_iovec(i)) + flags |= AOP_FLAG_UNINTERRUPTIBLE; + + do { + struct page *page; + unsigned long offset; /* Offset into pagecache page */ + unsigned long bytes; /* Bytes to write to page */ + size_t copied; /* Bytes copied from user */ + + offset = (pos & (PAGE_SIZE - 1)); + bytes = min_t(unsigned long, PAGE_SIZE - offset, + iov_iter_count(i)); +again: + if (bytes > length) + bytes = length; + + /* + * Bring in the user page that we will copy from _first_. + * Otherwise there's a nasty deadlock on copying from the + * same page as we're writing to, without it being marked + * up-to-date. + * + * Not only is this an optimisation, but it is also required + * to check that the address is actually valid, when atomic + * usercopies are used, below. + */ + if (unlikely(iov_iter_fault_in_readable(i, bytes))) { + status = -EFAULT; + break; + } + + status = iomap_write_begin(inode, pos, bytes, flags, &page, + iomap); + if (unlikely(status)) + break; + + if (mapping_writably_mapped(inode->i_mapping)) + flush_dcache_page(page); + + pagefault_disable(); + copied = iov_iter_copy_from_user_atomic(page, i, offset, bytes); + pagefault_enable(); + + flush_dcache_page(page); + mark_page_accessed(page); + + status = iomap_write_end(inode, pos, bytes, copied, page); + if (unlikely(status < 0)) + break; + copied = status; + + cond_resched(); + + iov_iter_advance(i, copied); + if (unlikely(copied == 0)) { + /* + * If we were unable to copy any data at all, we must + * fall back to a single segment length write. + * + * If we didn't fallback here, we could livelock + * because not all segments in the iov can be copied at + * once without a pagefault. + */ + bytes = min_t(unsigned long, PAGE_SIZE - offset, + iov_iter_single_seg_count(i)); + goto again; + } + pos += copied; + written += copied; + length -= copied; + + balance_dirty_pages_ratelimited(inode->i_mapping); + } while (iov_iter_count(i) && length); + + return written ? written : status; +} + +ssize_t +iomap_file_buffered_write(struct kiocb *iocb, struct iov_iter *iter, + struct iomap_ops *ops) +{ + struct inode *inode = iocb->ki_filp->f_mapping->host; + loff_t pos = iocb->ki_pos, ret = 0, written = 0; + + while (iov_iter_count(iter)) { + ret = iomap_apply(inode, pos, iov_iter_count(iter), + IOMAP_WRITE, ops, iter, iomap_write_actor); + if (ret <= 0) + break; + pos += ret; + written += ret; + } + + return written ? written : ret; +} +EXPORT_SYMBOL_GPL(iomap_file_buffered_write); + +static int iomap_zero(struct inode *inode, loff_t pos, unsigned offset, + unsigned bytes, struct iomap *iomap) +{ + struct page *page; + int status; + + status = iomap_write_begin(inode, pos, bytes, + AOP_FLAG_UNINTERRUPTIBLE | AOP_FLAG_NOFS, &page, iomap); + if (status) + return status; + + zero_user(page, offset, bytes); + mark_page_accessed(page); + + return iomap_write_end(inode, pos, bytes, bytes, page); +} + +static int iomap_dax_zero(loff_t pos, unsigned offset, unsigned bytes, + struct iomap *iomap) +{ + sector_t sector = iomap->blkno + + (((pos & ~(PAGE_SIZE - 1)) - iomap->offset) >> 9); + + return __dax_zero_page_range(iomap->bdev, sector, offset, bytes); +} + +static loff_t +iomap_zero_range_actor(struct inode *inode, loff_t pos, loff_t count, + void *data, struct iomap *iomap) +{ + bool *did_zero = data; + loff_t written = 0; + int status; + + /* already zeroed? we're done. */ + if (iomap->type == IOMAP_HOLE || iomap->type == IOMAP_UNWRITTEN) + return count; + + do { + unsigned offset, bytes; + + offset = pos & (PAGE_SIZE - 1); /* Within page */ + bytes = min_t(unsigned, PAGE_SIZE - offset, count); + + if (IS_DAX(inode)) + status = iomap_dax_zero(pos, offset, bytes, iomap); + else + status = iomap_zero(inode, pos, offset, bytes, iomap); + if (status < 0) + return status; + + pos += bytes; + count -= bytes; + written += bytes; + if (did_zero) + *did_zero = true; + } while (count > 0); + + return written; +} + +int +iomap_zero_range(struct inode *inode, loff_t pos, loff_t len, bool *did_zero, + struct iomap_ops *ops) +{ + loff_t ret; + + while (len > 0) { + ret = iomap_apply(inode, pos, len, IOMAP_ZERO, + ops, did_zero, iomap_zero_range_actor); + if (ret <= 0) + return ret; + + pos += ret; + len -= ret; + } + + return 0; +} +EXPORT_SYMBOL_GPL(iomap_zero_range); + +int +iomap_truncate_page(struct inode *inode, loff_t pos, bool *did_zero, + struct iomap_ops *ops) +{ + unsigned blocksize = (1 << inode->i_blkbits); + unsigned off = pos & (blocksize - 1); + + /* Block boundary? Nothing to do */ + if (!off) + return 0; + return iomap_zero_range(inode, pos, blocksize - off, did_zero, ops); +} +EXPORT_SYMBOL_GPL(iomap_truncate_page); + +static loff_t +iomap_page_mkwrite_actor(struct inode *inode, loff_t pos, loff_t length, + void *data, struct iomap *iomap) +{ + struct page *page = data; + int ret; + + ret = __block_write_begin_int(page, pos & ~PAGE_MASK, length, + NULL, iomap); + if (ret) + return ret; + + block_commit_write(page, 0, length); + return length; +} + +int iomap_page_mkwrite(struct vm_area_struct *vma, struct vm_fault *vmf, + struct iomap_ops *ops) +{ + struct page *page = vmf->page; + struct inode *inode = file_inode(vma->vm_file); + unsigned long length; + loff_t offset, size; + ssize_t ret; + + lock_page(page); + size = i_size_read(inode); + if ((page->mapping != inode->i_mapping) || + (page_offset(page) > size)) { + /* We overload EFAULT to mean page got truncated */ + ret = -EFAULT; + goto out_unlock; + } + + /* page is wholly or partially inside EOF */ + if (((page->index + 1) << PAGE_SHIFT) > size) + length = size & ~PAGE_MASK; + else + length = PAGE_SIZE; + + offset = page_offset(page); + while (length > 0) { + ret = iomap_apply(inode, offset, length, IOMAP_WRITE, + ops, page, iomap_page_mkwrite_actor); + if (unlikely(ret <= 0)) + goto out_unlock; + offset += ret; + length -= ret; + } + + set_page_dirty(page); + wait_for_stable_page(page); + return 0; +out_unlock: + unlock_page(page); + return ret; +} +EXPORT_SYMBOL_GPL(iomap_page_mkwrite); + +struct fiemap_ctx { + struct fiemap_extent_info *fi; + struct iomap prev; +}; + +static int iomap_to_fiemap(struct fiemap_extent_info *fi, + struct iomap *iomap, u32 flags) +{ + switch (iomap->type) { + case IOMAP_HOLE: + /* skip holes */ + return 0; + case IOMAP_DELALLOC: + flags |= FIEMAP_EXTENT_DELALLOC | FIEMAP_EXTENT_UNKNOWN; + break; + case IOMAP_UNWRITTEN: + flags |= FIEMAP_EXTENT_UNWRITTEN; + break; + case IOMAP_MAPPED: + break; + } + + return fiemap_fill_next_extent(fi, iomap->offset, + iomap->blkno != IOMAP_NULL_BLOCK ? iomap->blkno << 9: 0, + iomap->length, flags | FIEMAP_EXTENT_MERGED); + +} + +static loff_t +iomap_fiemap_actor(struct inode *inode, loff_t pos, loff_t length, void *data, + struct iomap *iomap) +{ + struct fiemap_ctx *ctx = data; + loff_t ret = length; + + if (iomap->type == IOMAP_HOLE) + return length; + + ret = iomap_to_fiemap(ctx->fi, &ctx->prev, 0); + ctx->prev = *iomap; + switch (ret) { + case 0: /* success */ + return length; + case 1: /* extent array full */ + return 0; + default: + return ret; + } +} + +int iomap_fiemap(struct inode *inode, struct fiemap_extent_info *fi, + loff_t start, loff_t len, struct iomap_ops *ops) +{ + struct fiemap_ctx ctx; + loff_t ret; + + memset(&ctx, 0, sizeof(ctx)); + ctx.fi = fi; + ctx.prev.type = IOMAP_HOLE; + + ret = fiemap_check_flags(fi, FIEMAP_FLAG_SYNC); + if (ret) + return ret; + + ret = filemap_write_and_wait(inode->i_mapping); + if (ret) + return ret; + + while (len > 0) { + ret = iomap_apply(inode, start, len, 0, ops, &ctx, + iomap_fiemap_actor); + if (ret < 0) + return ret; + if (ret == 0) + break; + + start += ret; + len -= ret; + } + + if (ctx.prev.type != IOMAP_HOLE) { + ret = iomap_to_fiemap(fi, &ctx.prev, FIEMAP_EXTENT_LAST); + if (ret < 0) + return ret; + } + + return 0; +} +EXPORT_SYMBOL_GPL(iomap_fiemap); diff --git a/fs/isofs/compress.c b/fs/isofs/compress.c index 2ce5b75ee9a5..44af14b2e916 100644 --- a/fs/isofs/compress.c +++ b/fs/isofs/compress.c @@ -361,7 +361,6 @@ static int zisofs_readpage(struct file *file, struct page *page) const struct address_space_operations zisofs_aops = { .readpage = zisofs_readpage, - /* No sync_page operation supported? */ /* No bmap operation supported */ }; diff --git a/fs/isofs/inode.c b/fs/isofs/inode.c index 131dedc920d8..761fade7680f 100644 --- a/fs/isofs/inode.c +++ b/fs/isofs/inode.c @@ -174,7 +174,7 @@ struct iso9660_options{ * Compute the hash for the isofs name corresponding to the dentry. */ static int -isofs_hashi_common(struct qstr *qstr, int ms) +isofs_hashi_common(const struct dentry *dentry, struct qstr *qstr, int ms) { const char *name; int len; @@ -188,7 +188,7 @@ isofs_hashi_common(struct qstr *qstr, int ms) len--; } - hash = init_name_hash(); + hash = init_name_hash(dentry); while (len--) { c = tolower(*name++); hash = partial_name_hash(c, hash); @@ -231,7 +231,7 @@ static int isofs_dentry_cmp_common( static int isofs_hashi(const struct dentry *dentry, struct qstr *qstr) { - return isofs_hashi_common(qstr, 0); + return isofs_hashi_common(dentry, qstr, 0); } static int @@ -246,7 +246,7 @@ isofs_dentry_cmpi(const struct dentry *parent, const struct dentry *dentry, * Compute the hash for the isofs name corresponding to the dentry. */ static int -isofs_hash_common(struct qstr *qstr, int ms) +isofs_hash_common(const struct dentry *dentry, struct qstr *qstr, int ms) { const char *name; int len; @@ -258,7 +258,7 @@ isofs_hash_common(struct qstr *qstr, int ms) len--; } - qstr->hash = full_name_hash(name, len); + qstr->hash = full_name_hash(dentry, name, len); return 0; } @@ -266,13 +266,13 @@ isofs_hash_common(struct qstr *qstr, int ms) static int isofs_hash_ms(const struct dentry *dentry, struct qstr *qstr) { - return isofs_hash_common(qstr, 1); + return isofs_hash_common(dentry, qstr, 1); } static int isofs_hashi_ms(const struct dentry *dentry, struct qstr *qstr) { - return isofs_hashi_common(qstr, 1); + return isofs_hashi_common(dentry, qstr, 1); } static int diff --git a/fs/jbd2/commit.c b/fs/jbd2/commit.c index 8f7d1339c973..5bb565f9989c 100644 --- a/fs/jbd2/commit.c +++ b/fs/jbd2/commit.c @@ -124,7 +124,7 @@ static int journal_submit_commit_record(journal_t *journal, struct commit_header *tmp; struct buffer_head *bh; int ret; - struct timespec now = current_kernel_time(); + struct timespec64 now = current_kernel_time64(); *cbh = NULL; diff --git a/fs/jbd2/journal.c b/fs/jbd2/journal.c index a7c4c101fe3e..46261a6f902d 100644 --- a/fs/jbd2/journal.c +++ b/fs/jbd2/journal.c @@ -691,6 +691,7 @@ int jbd2_log_wait_commit(journal_t *journal, tid_t tid) { int err = 0; + jbd2_might_wait_for_commit(journal); read_lock(&journal->j_state_lock); #ifdef CONFIG_JBD2_DEBUG if (!tid_geq(journal->j_commit_request, tid)) { @@ -1091,6 +1092,7 @@ static void jbd2_stats_proc_exit(journal_t *journal) static journal_t * journal_init_common (void) { + static struct lock_class_key jbd2_trans_commit_key; journal_t *journal; int err; @@ -1126,6 +1128,9 @@ static journal_t * journal_init_common (void) spin_lock_init(&journal->j_history_lock); + lockdep_init_map(&journal->j_trans_commit_map, "jbd2_handle", + &jbd2_trans_commit_key, 0); + return journal; } diff --git a/fs/jbd2/transaction.c b/fs/jbd2/transaction.c index 1749519b362f..b5bc3e249163 100644 --- a/fs/jbd2/transaction.c +++ b/fs/jbd2/transaction.c @@ -182,6 +182,8 @@ static int add_transaction_credits(journal_t *journal, int blocks, int needed; int total = blocks + rsv_blocks; + jbd2_might_wait_for_commit(journal); + /* * If the current transaction is locked down for commit, wait * for the lock to be released. @@ -382,13 +384,11 @@ repeat: read_unlock(&journal->j_state_lock); current->journal_info = handle; - lock_map_acquire(&handle->h_lockdep_map); + rwsem_acquire_read(&journal->j_trans_commit_map, 0, 0, _THIS_IP_); jbd2_journal_free_transaction(new_transaction); return 0; } -static struct lock_class_key jbd2_handle_key; - /* Allocate a new handle. This should probably be in a slab... */ static handle_t *new_handle(int nblocks) { @@ -398,9 +398,6 @@ static handle_t *new_handle(int nblocks) handle->h_buffer_credits = nblocks; handle->h_ref = 1; - lockdep_init_map(&handle->h_lockdep_map, "jbd2_handle", - &jbd2_handle_key, 0); - return handle; } @@ -672,7 +669,7 @@ int jbd2__journal_restart(handle_t *handle, int nblocks, gfp_t gfp_mask) if (need_to_start) jbd2_log_start_commit(journal, tid); - lock_map_release(&handle->h_lockdep_map); + rwsem_release(&journal->j_trans_commit_map, 1, _THIS_IP_); handle->h_buffer_credits = nblocks; ret = start_this_handle(journal, handle, gfp_mask); return ret; @@ -700,6 +697,8 @@ void jbd2_journal_lock_updates(journal_t *journal) { DEFINE_WAIT(wait); + jbd2_might_wait_for_commit(journal); + write_lock(&journal->j_state_lock); ++journal->j_barrier_count; @@ -1750,11 +1749,11 @@ int jbd2_journal_stop(handle_t *handle) wake_up(&journal->j_wait_transaction_locked); } + rwsem_release(&journal->j_trans_commit_map, 1, _THIS_IP_); + if (wait_for_commit) err = jbd2_log_wait_commit(journal, tid); - lock_map_release(&handle->h_lockdep_map); - if (handle->h_rsv_handle) jbd2_journal_free_reserved(handle->h_rsv_handle); free_and_exit: diff --git a/fs/jffs2/dir.c b/fs/jffs2/dir.c index 84c4bf3631a2..30eb33ff8189 100644 --- a/fs/jffs2/dir.c +++ b/fs/jffs2/dir.c @@ -81,6 +81,7 @@ static struct dentry *jffs2_lookup(struct inode *dir_i, struct dentry *target, struct jffs2_full_dirent *fd = NULL, *fd_list; uint32_t ino = 0; struct inode *inode = NULL; + unsigned int nhash; jffs2_dbg(1, "jffs2_lookup()\n"); @@ -89,11 +90,14 @@ static struct dentry *jffs2_lookup(struct inode *dir_i, struct dentry *target, dir_f = JFFS2_INODE_INFO(dir_i); + /* The 'nhash' on the fd_list is not the same as the dentry hash */ + nhash = full_name_hash(NULL, target->d_name.name, target->d_name.len); + mutex_lock(&dir_f->sem); /* NB: The 2.2 backport will need to explicitly check for '.' and '..' here */ - for (fd_list = dir_f->dents; fd_list && fd_list->nhash <= target->d_name.hash; fd_list = fd_list->next) { - if (fd_list->nhash == target->d_name.hash && + for (fd_list = dir_f->dents; fd_list && fd_list->nhash <= nhash; fd_list = fd_list->next) { + if (fd_list->nhash == nhash && (!fd || fd_list->version > fd->version) && strlen(fd_list->name) == target->d_name.len && !strncmp(fd_list->name, target->d_name.name, target->d_name.len)) { diff --git a/fs/jffs2/readinode.c b/fs/jffs2/readinode.c index bfebbf13698c..06a71dbd4833 100644 --- a/fs/jffs2/readinode.c +++ b/fs/jffs2/readinode.c @@ -674,7 +674,7 @@ static inline int read_direntry(struct jffs2_sb_info *c, struct jffs2_raw_node_r } } - fd->nhash = full_name_hash(fd->name, rd->nsize); + fd->nhash = full_name_hash(NULL, fd->name, rd->nsize); fd->next = NULL; fd->name[rd->nsize] = '\0'; diff --git a/fs/jffs2/scan.c b/fs/jffs2/scan.c index 9ad5ba4b299b..90431dd613b8 100644 --- a/fs/jffs2/scan.c +++ b/fs/jffs2/scan.c @@ -1100,7 +1100,7 @@ static int jffs2_scan_dirent_node(struct jffs2_sb_info *c, struct jffs2_eraseblo fd->next = NULL; fd->version = je32_to_cpu(rd->version); fd->ino = je32_to_cpu(rd->ino); - fd->nhash = full_name_hash(fd->name, checkedlen); + fd->nhash = full_name_hash(NULL, fd->name, checkedlen); fd->type = rd->type; jffs2_add_fd_to_list(c, fd, &ic->scan_dents); diff --git a/fs/jffs2/summary.c b/fs/jffs2/summary.c index bc5385471a6e..be7c8a6a5748 100644 --- a/fs/jffs2/summary.c +++ b/fs/jffs2/summary.c @@ -476,7 +476,7 @@ static int jffs2_sum_process_sum_data(struct jffs2_sb_info *c, struct jffs2_eras fd->next = NULL; fd->version = je32_to_cpu(spd->version); fd->ino = je32_to_cpu(spd->ino); - fd->nhash = full_name_hash(fd->name, checkedlen); + fd->nhash = full_name_hash(NULL, fd->name, checkedlen); fd->type = spd->type; jffs2_add_fd_to_list(c, fd, &ic->scan_dents); diff --git a/fs/jffs2/write.c b/fs/jffs2/write.c index 7fb187ab2682..cda9a361368e 100644 --- a/fs/jffs2/write.c +++ b/fs/jffs2/write.c @@ -245,7 +245,7 @@ struct jffs2_full_dirent *jffs2_write_dirent(struct jffs2_sb_info *c, struct jff fd->version = je32_to_cpu(rd->version); fd->ino = je32_to_cpu(rd->ino); - fd->nhash = full_name_hash(name, namelen); + fd->nhash = full_name_hash(NULL, name, namelen); fd->type = rd->type; memcpy(fd->name, name, namelen); fd->name[namelen]=0; @@ -598,7 +598,7 @@ int jffs2_do_unlink(struct jffs2_sb_info *c, struct jffs2_inode_info *dir_f, jffs2_add_fd_to_list(c, fd, &dir_f->dents); mutex_unlock(&dir_f->sem); } else { - uint32_t nhash = full_name_hash(name, namelen); + uint32_t nhash = full_name_hash(NULL, name, namelen); fd = dir_f->dents; /* We don't actually want to reserve any space, but we do diff --git a/fs/jfs/jfs_debug.c b/fs/jfs/jfs_debug.c index dd824d9b0b1a..a37eb5f8cbc0 100644 --- a/fs/jfs/jfs_debug.c +++ b/fs/jfs/jfs_debug.c @@ -58,7 +58,6 @@ static ssize_t jfs_loglevel_proc_write(struct file *file, } static const struct file_operations jfs_loglevel_proc_fops = { - .owner = THIS_MODULE, .open = jfs_loglevel_proc_open, .read = seq_read, .llseek = seq_lseek, diff --git a/fs/jfs/jfs_logmgr.c b/fs/jfs/jfs_logmgr.c index a74752146ec9..a21ea8b3e5fa 100644 --- a/fs/jfs/jfs_logmgr.c +++ b/fs/jfs/jfs_logmgr.c @@ -2517,7 +2517,6 @@ static int jfs_lmstats_proc_open(struct inode *inode, struct file *file) } const struct file_operations jfs_lmstats_proc_fops = { - .owner = THIS_MODULE, .open = jfs_lmstats_proc_open, .read = seq_read, .llseek = seq_lseek, diff --git a/fs/jfs/jfs_metapage.c b/fs/jfs/jfs_metapage.c index e7fa9e513040..489aaa1403e5 100644 --- a/fs/jfs/jfs_metapage.c +++ b/fs/jfs/jfs_metapage.c @@ -830,7 +830,6 @@ static int jfs_mpstat_proc_open(struct inode *inode, struct file *file) } const struct file_operations jfs_mpstat_proc_fops = { - .owner = THIS_MODULE, .open = jfs_mpstat_proc_open, .read = seq_read, .llseek = seq_lseek, diff --git a/fs/jfs/jfs_txnmgr.c b/fs/jfs/jfs_txnmgr.c index eddf2b6eda85..2e58978d6f45 100644 --- a/fs/jfs/jfs_txnmgr.c +++ b/fs/jfs/jfs_txnmgr.c @@ -3040,7 +3040,6 @@ static int jfs_txanchor_proc_open(struct inode *inode, struct file *file) } const struct file_operations jfs_txanchor_proc_fops = { - .owner = THIS_MODULE, .open = jfs_txanchor_proc_open, .read = seq_read, .llseek = seq_lseek, @@ -3081,7 +3080,6 @@ static int jfs_txstats_proc_open(struct inode *inode, struct file *file) } const struct file_operations jfs_txstats_proc_fops = { - .owner = THIS_MODULE, .open = jfs_txstats_proc_open, .read = seq_read, .llseek = seq_lseek, diff --git a/fs/jfs/jfs_xtree.c b/fs/jfs/jfs_xtree.c index 5ad7748860ce..5cde6d2fcfca 100644 --- a/fs/jfs/jfs_xtree.c +++ b/fs/jfs/jfs_xtree.c @@ -3894,7 +3894,6 @@ static int jfs_xtstat_proc_open(struct inode *inode, struct file *file) } const struct file_operations jfs_xtstat_proc_fops = { - .owner = THIS_MODULE, .open = jfs_xtstat_proc_open, .read = seq_read, .llseek = seq_lseek, diff --git a/fs/jfs/namei.c b/fs/jfs/namei.c index 539deddecbb0..04baf0dfc40c 100644 --- a/fs/jfs/namei.c +++ b/fs/jfs/namei.c @@ -1564,7 +1564,7 @@ static int jfs_ci_hash(const struct dentry *dir, struct qstr *this) unsigned long hash; int i; - hash = init_name_hash(); + hash = init_name_hash(dir); for (i=0; i < this->len; i++) hash = partial_name_hash(tolower(this->name[i]), hash); this->hash = end_name_hash(hash); diff --git a/fs/kernfs/dir.c b/fs/kernfs/dir.c index 8a652404eef6..e57174d43683 100644 --- a/fs/kernfs/dir.c +++ b/fs/kernfs/dir.c @@ -336,11 +336,11 @@ struct kernfs_node *kernfs_get_parent(struct kernfs_node *kn) */ static unsigned int kernfs_name_hash(const char *name, const void *ns) { - unsigned long hash = init_name_hash(); + unsigned long hash = init_name_hash(ns); unsigned int len = strlen(name); while (len--) hash = partial_name_hash(*name++, hash); - hash = (end_name_hash(hash) ^ hash_ptr((void *)ns, 31)); + hash = end_name_hash(hash); hash &= 0x7fffffffU; /* Reserve hash numbers 0, 1 and INT_MAX for magic directory entries */ if (hash < 2) diff --git a/fs/lockd/procfs.c b/fs/lockd/procfs.c index 2a0a98480e39..8f72cb237ef3 100644 --- a/fs/lockd/procfs.c +++ b/fs/lockd/procfs.c @@ -64,7 +64,6 @@ static const struct file_operations lockd_end_grace_operations = { .read = nlm_end_grace_read, .llseek = default_llseek, .release = simple_transaction_release, - .owner = THIS_MODULE, }; int __init diff --git a/fs/logfs/dir.c b/fs/logfs/dir.c index 2d5336bd4efd..bcd754d216bd 100644 --- a/fs/logfs/dir.c +++ b/fs/logfs/dir.c @@ -95,7 +95,7 @@ static int beyond_eof(struct inode *inode, loff_t bix) * of each character and pick a prime nearby, preferably a bit-sparse * one. */ -static u32 hash_32(const char *s, int len, u32 seed) +static u32 logfs_hash_32(const char *s, int len, u32 seed) { u32 hash = seed; int i; @@ -159,7 +159,7 @@ static struct page *logfs_get_dd_page(struct inode *dir, struct dentry *dentry) struct qstr *name = &dentry->d_name; struct page *page; struct logfs_disk_dentry *dd; - u32 hash = hash_32(name->name, name->len, 0); + u32 hash = logfs_hash_32(name->name, name->len, 0); pgoff_t index; int round; @@ -370,7 +370,7 @@ static int logfs_write_dir(struct inode *dir, struct dentry *dentry, { struct page *page; struct logfs_disk_dentry *dd; - u32 hash = hash_32(dentry->d_name.name, dentry->d_name.len, 0); + u32 hash = logfs_hash_32(dentry->d_name.name, dentry->d_name.len, 0); pgoff_t index; int round, err; diff --git a/fs/mpage.c b/fs/mpage.c index 37b28280ad04..2ca1f39c8cba 100644 --- a/fs/mpage.c +++ b/fs/mpage.c @@ -72,6 +72,8 @@ mpage_alloc(struct block_device *bdev, { struct bio *bio; + /* Restrict the given (page cache) mask for slab allocations */ + gfp_flags &= GFP_KERNEL; bio = bio_alloc(gfp_flags, nr_vecs); if (bio == NULL && (current->flags & PF_MEMALLOC)) { @@ -363,7 +365,7 @@ mpage_readpages(struct address_space *mapping, struct list_head *pages, sector_t last_block_in_bio = 0; struct buffer_head map_bh; unsigned long first_logical_block = 0; - gfp_t gfp = mapping_gfp_constraint(mapping, GFP_KERNEL); + gfp_t gfp = readahead_gfp_mask(mapping); map_bh.b_state = 0; map_bh.b_size = 0; diff --git a/fs/namei.c b/fs/namei.c index 70580ab1445c..68a896c804b7 100644 --- a/fs/namei.c +++ b/fs/namei.c @@ -1449,9 +1449,8 @@ static int follow_dotdot(struct nameidata *nd) } /* - * This looks up the name in dcache, possibly revalidates the old dentry and - * allocates a new one if not found or not valid. In the need_lookup argument - * returns whether i_op->lookup is necessary. + * This looks up the name in dcache and possibly revalidates the found dentry. + * NULL is returned if the dentry does not exist in the cache. */ static struct dentry *lookup_dcache(const struct qstr *name, struct dentry *dir, @@ -1890,9 +1889,9 @@ static inline unsigned int fold_hash(unsigned long x, unsigned long y) * payload bytes, to match the way that hash_name() iterates until it * finds the delimiter after the name. */ -unsigned int full_name_hash(const char *name, unsigned int len) +unsigned int full_name_hash(const void *salt, const char *name, unsigned int len) { - unsigned long a, x = 0, y = 0; + unsigned long a, x = 0, y = (unsigned long)salt; for (;;) { if (!len) @@ -1911,15 +1910,19 @@ done: EXPORT_SYMBOL(full_name_hash); /* Return the "hash_len" (hash and length) of a null-terminated string */ -u64 hashlen_string(const char *name) +u64 hashlen_string(const void *salt, const char *name) { - unsigned long a = 0, x = 0, y = 0, adata, mask, len; + unsigned long a = 0, x = 0, y = (unsigned long)salt; + unsigned long adata, mask, len; const struct word_at_a_time constants = WORD_AT_A_TIME_CONSTANTS; - len = -sizeof(unsigned long); + len = 0; + goto inside; + do { HASH_MIX(x, y, a); len += sizeof(unsigned long); +inside: a = load_unaligned_zeropad(name+len); } while (!has_zero(a, &adata, &constants)); @@ -1935,15 +1938,19 @@ EXPORT_SYMBOL(hashlen_string); * Calculate the length and hash of the path component, and * return the "hash_len" as the result. */ -static inline u64 hash_name(const char *name) +static inline u64 hash_name(const void *salt, const char *name) { - unsigned long a = 0, b, x = 0, y = 0, adata, bdata, mask, len; + unsigned long a = 0, b, x = 0, y = (unsigned long)salt; + unsigned long adata, bdata, mask, len; const struct word_at_a_time constants = WORD_AT_A_TIME_CONSTANTS; - len = -sizeof(unsigned long); + len = 0; + goto inside; + do { HASH_MIX(x, y, a); len += sizeof(unsigned long); +inside: a = load_unaligned_zeropad(name+len); b = a ^ REPEAT_BYTE('/'); } while (!(has_zero(a, &adata, &constants) | has_zero(b, &bdata, &constants))); @@ -1959,9 +1966,9 @@ static inline u64 hash_name(const char *name) #else /* !CONFIG_DCACHE_WORD_ACCESS: Slow, byte-at-a-time version */ /* Return the hash of a string of known length */ -unsigned int full_name_hash(const char *name, unsigned int len) +unsigned int full_name_hash(const void *salt, const char *name, unsigned int len) { - unsigned long hash = init_name_hash(); + unsigned long hash = init_name_hash(salt); while (len--) hash = partial_name_hash((unsigned char)*name++, hash); return end_name_hash(hash); @@ -1969,9 +1976,9 @@ unsigned int full_name_hash(const char *name, unsigned int len) EXPORT_SYMBOL(full_name_hash); /* Return the "hash_len" (hash and length) of a null-terminated string */ -u64 hashlen_string(const char *name) +u64 hashlen_string(const void *salt, const char *name) { - unsigned long hash = init_name_hash(); + unsigned long hash = init_name_hash(salt); unsigned long len = 0, c; c = (unsigned char)*name; @@ -1988,9 +1995,9 @@ EXPORT_SYMBOL(hashlen_string); * We know there's a real path component here of at least * one character. */ -static inline u64 hash_name(const char *name) +static inline u64 hash_name(const void *salt, const char *name) { - unsigned long hash = init_name_hash(); + unsigned long hash = init_name_hash(salt); unsigned long len = 0, c; c = (unsigned char)*name; @@ -2030,7 +2037,7 @@ static int link_path_walk(const char *name, struct nameidata *nd) if (err) return err; - hash_len = hash_name(name); + hash_len = hash_name(nd->path.dentry, name); type = LAST_NORM; if (name[0] == '.') switch (hashlen_len(hash_len)) { @@ -2389,33 +2396,6 @@ int vfs_path_lookup(struct dentry *dentry, struct vfsmount *mnt, EXPORT_SYMBOL(vfs_path_lookup); /** - * lookup_hash - lookup single pathname component on already hashed name - * @name: name and hash to lookup - * @base: base directory to lookup from - * - * The name must have been verified and hashed (see lookup_one_len()). Using - * this after just full_name_hash() is unsafe. - * - * This function also doesn't check for search permission on base directory. - * - * Use lookup_one_len_unlocked() instead, unless you really know what you are - * doing. - * - * Do not hold i_mutex; this helper takes i_mutex if necessary. - */ -struct dentry *lookup_hash(const struct qstr *name, struct dentry *base) -{ - struct dentry *ret; - - ret = lookup_dcache(name, base, 0); - if (!ret) - ret = lookup_slow(name, base, 0); - - return ret; -} -EXPORT_SYMBOL(lookup_hash); - -/** * lookup_one_len - filesystem helper to lookup single pathname component * @name: pathname component to lookup * @base: base directory to lookup from @@ -2436,7 +2416,7 @@ struct dentry *lookup_one_len(const char *name, struct dentry *base, int len) this.name = name; this.len = len; - this.hash = full_name_hash(name, len); + this.hash = full_name_hash(base, name, len); if (!len) return ERR_PTR(-EACCES); @@ -2486,10 +2466,11 @@ struct dentry *lookup_one_len_unlocked(const char *name, struct qstr this; unsigned int c; int err; + struct dentry *ret; this.name = name; this.len = len; - this.hash = full_name_hash(name, len); + this.hash = full_name_hash(base, name, len); if (!len) return ERR_PTR(-EACCES); @@ -2517,7 +2498,10 @@ struct dentry *lookup_one_len_unlocked(const char *name, if (err) return ERR_PTR(err); - return lookup_hash(&this, base); + ret = lookup_dcache(&this, base, 0); + if (!ret) + ret = lookup_slow(&this, base, 0); + return ret; } EXPORT_SYMBOL(lookup_one_len_unlocked); @@ -4328,7 +4312,7 @@ int vfs_rename(struct inode *old_dir, struct dentry *old_dentry, * Check source == target. * On overlayfs need to look at underlying inodes. */ - if (vfs_select_inode(old_dentry, 0) == vfs_select_inode(new_dentry, 0)) + if (d_real_inode(old_dentry) == d_real_inode(new_dentry)) return 0; error = may_delete(old_dir, old_dentry, is_dir); diff --git a/fs/ncpfs/dir.c b/fs/ncpfs/dir.c index bfdad003ee56..9add7ab747a5 100644 --- a/fs/ncpfs/dir.c +++ b/fs/ncpfs/dir.c @@ -139,7 +139,7 @@ ncp_hash_dentry(const struct dentry *dentry, struct qstr *this) int i; t = NCP_IO_TABLE(sb); - hash = init_name_hash(); + hash = init_name_hash(dentry); for (i=0; i<this->len ; i++) hash = partial_name_hash(ncp_tolower(t, this->name[i]), hash); diff --git a/fs/nfs/client.c b/fs/nfs/client.c index 0c96528db94a..487c5607d52f 100644 --- a/fs/nfs/client.c +++ b/fs/nfs/client.c @@ -1102,7 +1102,6 @@ static const struct file_operations nfs_server_list_fops = { .read = seq_read, .llseek = seq_lseek, .release = seq_release_net, - .owner = THIS_MODULE, }; static int nfs_volume_list_open(struct inode *inode, struct file *file); @@ -1123,7 +1122,6 @@ static const struct file_operations nfs_volume_list_fops = { .read = seq_read, .llseek = seq_lseek, .release = seq_release_net, - .owner = THIS_MODULE, }; /* diff --git a/fs/nfs/dir.c b/fs/nfs/dir.c index 19d93d0cd400..baaa38859899 100644 --- a/fs/nfs/dir.c +++ b/fs/nfs/dir.c @@ -232,7 +232,7 @@ int nfs_readdir_make_qstr(struct qstr *string, const char *name, unsigned int le * in a page cache page which kmemleak does not scan. */ kmemleak_not_leak(string->name); - string->hash = full_name_hash(name, len); + string->hash = full_name_hash(NULL, name, len); return 0; } @@ -502,7 +502,7 @@ void nfs_prime_dcache(struct dentry *parent, struct nfs_entry *entry) if (filename.len == 2 && filename.name[1] == '.') return; } - filename.hash = full_name_hash(filename.name, filename.len); + filename.hash = full_name_hash(parent, filename.name, filename.len); dentry = d_lookup(parent, &filename); again: @@ -734,7 +734,7 @@ struct page *get_cache_page(nfs_readdir_descriptor_t *desc) struct page *page; for (;;) { - page = read_cache_page(file_inode(desc->file)->i_mapping, + page = read_cache_page(desc->file->f_mapping, desc->page_index, (filler_t *)nfs_readdir_filler, desc); if (IS_ERR(page) || grab_page(page)) break; @@ -1397,19 +1397,18 @@ struct dentry *nfs_lookup(struct inode *dir, struct dentry * dentry, unsigned in if (IS_ERR(label)) goto out; - /* Protect against concurrent sillydeletes */ trace_nfs_lookup_enter(dir, dentry, flags); error = NFS_PROTO(dir)->lookup(dir, &dentry->d_name, fhandle, fattr, label); if (error == -ENOENT) goto no_entry; if (error < 0) { res = ERR_PTR(error); - goto out_unblock_sillyrename; + goto out_label; } inode = nfs_fhget(dentry->d_sb, fhandle, fattr, label); res = ERR_CAST(inode); if (IS_ERR(res)) - goto out_unblock_sillyrename; + goto out_label; /* Success: notify readdir to use READDIRPLUS */ nfs_advise_use_readdirplus(dir); @@ -1418,11 +1417,11 @@ no_entry: res = d_splice_alias(inode, dentry); if (res != NULL) { if (IS_ERR(res)) - goto out_unblock_sillyrename; + goto out_label; dentry = res; } nfs_set_verifier(dentry, nfs_save_change_attribute(dir)); -out_unblock_sillyrename: +out_label: trace_nfs_lookup_exit(dir, dentry, flags, error); nfs4_label_free(label); out: diff --git a/fs/nfs/direct.c b/fs/nfs/direct.c index c7326c2af2c3..e6210ead71d0 100644 --- a/fs/nfs/direct.c +++ b/fs/nfs/direct.c @@ -244,9 +244,7 @@ static int nfs_direct_cmp_commit_data_verf(struct nfs_direct_req *dreq, /** * nfs_direct_IO - NFS address space operation for direct I/O * @iocb: target I/O control block - * @iov: array of vectors that define I/O buffer - * @pos: offset in file to begin the operation - * @nr_segs: size of iovec array + * @iter: I/O buffer * * The presence of this routine in the address space ops vector means * the NFS client supports direct I/O. However, for most direct IO, we diff --git a/fs/nfs/internal.h b/fs/nfs/internal.h index 5154fa65a2f2..5ea04d87fc65 100644 --- a/fs/nfs/internal.h +++ b/fs/nfs/internal.h @@ -623,7 +623,7 @@ void nfs_mark_page_unstable(struct page *page, struct nfs_commit_info *cinfo) if (!cinfo->dreq) { struct inode *inode = page_file_mapping(page)->host; - inc_zone_page_state(page, NR_UNSTABLE_NFS); + inc_node_page_state(page, NR_UNSTABLE_NFS); inc_wb_stat(&inode_to_bdi(inode)->wb, WB_RECLAIMABLE); __mark_inode_dirty(inode, I_DIRTY_DATASYNC); } diff --git a/fs/nfs/nfs4trace.h b/fs/nfs/nfs4trace.h index 9c150b153782..cfb8f7ce5cf6 100644 --- a/fs/nfs/nfs4trace.h +++ b/fs/nfs/nfs4trace.h @@ -1235,8 +1235,8 @@ DECLARE_EVENT_CLASS(nfs4_idmap_event, len = 0; __entry->error = error < 0 ? error : 0; __entry->id = id; - memcpy(__get_dynamic_array(name), name, len); - ((char *)__get_dynamic_array(name))[len] = 0; + memcpy(__get_str(name), name, len); + __get_str(name)[len] = 0; ), TP_printk( diff --git a/fs/nfs/nfstrace.h b/fs/nfs/nfstrace.h index 0b9e5cc9a747..31c7763b94d5 100644 --- a/fs/nfs/nfstrace.h +++ b/fs/nfs/nfstrace.h @@ -707,9 +707,9 @@ TRACE_EVENT(nfs_sillyrename_unlink, __entry->dev = dir->i_sb->s_dev; __entry->dir = NFS_FILEID(dir); __entry->error = error; - memcpy(__get_dynamic_array(name), + memcpy(__get_str(name), data->args.name.name, len); - ((char *)__get_dynamic_array(name))[len] = 0; + __get_str(name)[len] = 0; ), TP_printk( diff --git a/fs/nfs/write.c b/fs/nfs/write.c index e1c74d3db64d..593fa21a02c0 100644 --- a/fs/nfs/write.c +++ b/fs/nfs/write.c @@ -898,7 +898,7 @@ nfs_mark_request_commit(struct nfs_page *req, struct pnfs_layout_segment *lseg, static void nfs_clear_page_commit(struct page *page) { - dec_zone_page_state(page, NR_UNSTABLE_NFS); + dec_node_page_state(page, NR_UNSTABLE_NFS); dec_wb_stat(&inode_to_bdi(page_file_mapping(page)->host)->wb, WB_RECLAIMABLE); } diff --git a/fs/nfsd/blocklayout.c b/fs/nfsd/blocklayout.c index 31f3df193bdb..ad2c05e80a83 100644 --- a/fs/nfsd/blocklayout.c +++ b/fs/nfsd/blocklayout.c @@ -2,6 +2,7 @@ * Copyright (c) 2014-2016 Christoph Hellwig. */ #include <linux/exportfs.h> +#include <linux/iomap.h> #include <linux/genhd.h> #include <linux/slab.h> #include <linux/pr.h> diff --git a/fs/nfsd/blocklayoutxdr.c b/fs/nfsd/blocklayoutxdr.c index 6c3b316f932e..4ebaaf4b8d8a 100644 --- a/fs/nfsd/blocklayoutxdr.c +++ b/fs/nfsd/blocklayoutxdr.c @@ -3,6 +3,7 @@ */ #include <linux/sunrpc/svc.h> #include <linux/exportfs.h> +#include <linux/iomap.h> #include <linux/nfs4.h> #include "nfsd.h" diff --git a/fs/nfsd/nfsctl.c b/fs/nfsd/nfsctl.c index 9690cb4dd588..e7787777620e 100644 --- a/fs/nfsd/nfsctl.c +++ b/fs/nfsd/nfsctl.c @@ -158,7 +158,6 @@ static const struct file_operations exports_proc_operations = { .read = seq_read, .llseek = seq_lseek, .release = seq_release, - .owner = THIS_MODULE, }; static int exports_nfsd_open(struct inode *inode, struct file *file) @@ -171,7 +170,6 @@ static const struct file_operations exports_nfsd_operations = { .read = seq_read, .llseek = seq_lseek, .release = seq_release, - .owner = THIS_MODULE, }; static int export_features_show(struct seq_file *m, void *v) @@ -217,7 +215,6 @@ static const struct file_operations pool_stats_operations = { .read = seq_read, .llseek = seq_lseek, .release = nfsd_pool_stats_release, - .owner = THIS_MODULE, }; static struct file_operations reply_cache_stats_operations = { diff --git a/fs/nfsd/stats.c b/fs/nfsd/stats.c index cd90878a76aa..d97338bb6a39 100644 --- a/fs/nfsd/stats.c +++ b/fs/nfsd/stats.c @@ -84,7 +84,6 @@ static int nfsd_proc_open(struct inode *inode, struct file *file) } static const struct file_operations nfsd_proc_fops = { - .owner = THIS_MODULE, .open = nfsd_proc_open, .read = seq_read, .llseek = seq_lseek, diff --git a/fs/ntfs/inode.c b/fs/ntfs/inode.c index f40972d6df90..e01287c964a8 100644 --- a/fs/ntfs/inode.c +++ b/fs/ntfs/inode.c @@ -1854,7 +1854,7 @@ int ntfs_read_inode_mount(struct inode *vi) /* Need this to sanity check attribute list references to $MFT. */ vi->i_generation = ni->seq_no = le16_to_cpu(m->sequence_number); - /* Provides readpage() and sync_page() for map_mft_record(). */ + /* Provides readpage() for map_mft_record(). */ vi->i_mapping->a_ops = &ntfs_mst_aops; ctx = ntfs_attr_get_search_ctx(ni, m); diff --git a/fs/ntfs/namei.c b/fs/ntfs/namei.c index 443abecf01b7..358258364616 100644 --- a/fs/ntfs/namei.c +++ b/fs/ntfs/namei.c @@ -253,7 +253,7 @@ handle_name: err = (signed)nls_name.len; goto err_out; } - nls_name.hash = full_name_hash(nls_name.name, nls_name.len); + nls_name.hash = full_name_hash(dent, nls_name.name, nls_name.len); dent = d_add_ci(dent, dent_inode, &nls_name); kfree(nls_name.name); diff --git a/fs/ocfs2/aops.c b/fs/ocfs2/aops.c index e97a37179614..af2adfcb0f6f 100644 --- a/fs/ocfs2/aops.c +++ b/fs/ocfs2/aops.c @@ -2426,7 +2426,7 @@ static int ocfs2_dio_end_io(struct kiocb *iocb, static ssize_t ocfs2_direct_IO(struct kiocb *iocb, struct iov_iter *iter) { struct file *file = iocb->ki_filp; - struct inode *inode = file_inode(file)->i_mapping->host; + struct inode *inode = file->f_mapping->host; struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); get_block_t *get_block; diff --git a/fs/ocfs2/cluster/tcp.c b/fs/ocfs2/cluster/tcp.c index 4238eb28889f..1d67fcbf7160 100644 --- a/fs/ocfs2/cluster/tcp.c +++ b/fs/ocfs2/cluster/tcp.c @@ -1618,16 +1618,12 @@ static void o2net_start_connect(struct work_struct *work) /* watch for racing with tearing a node down */ node = o2nm_get_node_by_num(o2net_num_from_nn(nn)); - if (node == NULL) { - ret = 0; + if (node == NULL) goto out; - } mynode = o2nm_get_node_by_num(o2nm_this_node()); - if (mynode == NULL) { - ret = 0; + if (mynode == NULL) goto out; - } spin_lock(&nn->nn_lock); /* diff --git a/fs/ocfs2/dlm/dlmcommon.h b/fs/ocfs2/dlm/dlmcommon.h index 004f2cbe8f71..8107d0d0c3f6 100644 --- a/fs/ocfs2/dlm/dlmcommon.h +++ b/fs/ocfs2/dlm/dlmcommon.h @@ -47,7 +47,7 @@ #define DLM_HASH_BUCKETS (DLM_HASH_PAGES * DLM_BUCKETS_PER_PAGE) /* Intended to make it easier for us to switch out hash functions */ -#define dlm_lockid_hash(_n, _l) full_name_hash(_n, _l) +#define dlm_lockid_hash(_n, _l) full_name_hash(NULL, _n, _l) enum dlm_mle_type { DLM_MLE_BLOCK = 0, diff --git a/fs/ocfs2/dlm/dlmdebug.c b/fs/ocfs2/dlm/dlmdebug.c index 825136070d2c..e7b760deefae 100644 --- a/fs/ocfs2/dlm/dlmdebug.c +++ b/fs/ocfs2/dlm/dlmdebug.c @@ -347,26 +347,6 @@ static struct dentry *dlm_debugfs_root; #define DLM_DEBUGFS_PURGE_LIST "purge_list" /* begin - utils funcs */ -static void dlm_debug_free(struct kref *kref) -{ - struct dlm_debug_ctxt *dc; - - dc = container_of(kref, struct dlm_debug_ctxt, debug_refcnt); - - kfree(dc); -} - -static void dlm_debug_put(struct dlm_debug_ctxt *dc) -{ - if (dc) - kref_put(&dc->debug_refcnt, dlm_debug_free); -} - -static void dlm_debug_get(struct dlm_debug_ctxt *dc) -{ - kref_get(&dc->debug_refcnt); -} - static int debug_release(struct inode *inode, struct file *file) { free_page((unsigned long)file->private_data); @@ -932,11 +912,9 @@ int dlm_debug_init(struct dlm_ctxt *dlm) goto bail; } - dlm_debug_get(dc); return 0; bail: - dlm_debug_shutdown(dlm); return -ENOMEM; } @@ -949,7 +927,8 @@ void dlm_debug_shutdown(struct dlm_ctxt *dlm) debugfs_remove(dc->debug_mle_dentry); debugfs_remove(dc->debug_lockres_dentry); debugfs_remove(dc->debug_state_dentry); - dlm_debug_put(dc); + kfree(dc); + dc = NULL; } } @@ -969,7 +948,6 @@ int dlm_create_debugfs_subroot(struct dlm_ctxt *dlm) mlog_errno(-ENOMEM); goto bail; } - kref_init(&dlm->dlm_debug_ctxt->debug_refcnt); return 0; bail: diff --git a/fs/ocfs2/dlm/dlmdebug.h b/fs/ocfs2/dlm/dlmdebug.h index 1f27c4812d1a..5ced5482e7d3 100644 --- a/fs/ocfs2/dlm/dlmdebug.h +++ b/fs/ocfs2/dlm/dlmdebug.h @@ -30,7 +30,6 @@ void dlm_print_one_mle(struct dlm_master_list_entry *mle); #ifdef CONFIG_DEBUG_FS struct dlm_debug_ctxt { - struct kref debug_refcnt; struct dentry *debug_state_dentry; struct dentry *debug_lockres_dentry; struct dentry *debug_mle_dentry; diff --git a/fs/ocfs2/dlmglue.c b/fs/ocfs2/dlmglue.c index 1eaa9100c889..83d576f6a287 100644 --- a/fs/ocfs2/dlmglue.c +++ b/fs/ocfs2/dlmglue.c @@ -1635,7 +1635,6 @@ int ocfs2_create_new_inode_locks(struct inode *inode) int ret; struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); - BUG_ON(!inode); BUG_ON(!ocfs2_inode_is_new(inode)); mlog(0, "Inode %llu\n", (unsigned long long)OCFS2_I(inode)->ip_blkno); @@ -1665,10 +1664,8 @@ int ocfs2_create_new_inode_locks(struct inode *inode) } ret = ocfs2_create_new_lock(osb, &OCFS2_I(inode)->ip_open_lockres, 0, 0); - if (ret) { + if (ret) mlog_errno(ret); - goto bail; - } bail: return ret; @@ -1680,8 +1677,6 @@ int ocfs2_rw_lock(struct inode *inode, int write) struct ocfs2_lock_res *lockres; struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); - BUG_ON(!inode); - mlog(0, "inode %llu take %s RW lock\n", (unsigned long long)OCFS2_I(inode)->ip_blkno, write ? "EXMODE" : "PRMODE"); @@ -1724,8 +1719,6 @@ int ocfs2_open_lock(struct inode *inode) struct ocfs2_lock_res *lockres; struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); - BUG_ON(!inode); - mlog(0, "inode %llu take PRMODE open lock\n", (unsigned long long)OCFS2_I(inode)->ip_blkno); @@ -1749,8 +1742,6 @@ int ocfs2_try_open_lock(struct inode *inode, int write) struct ocfs2_lock_res *lockres; struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); - BUG_ON(!inode); - mlog(0, "inode %llu try to take %s open lock\n", (unsigned long long)OCFS2_I(inode)->ip_blkno, write ? "EXMODE" : "PRMODE"); @@ -2328,8 +2319,6 @@ int ocfs2_inode_lock_full_nested(struct inode *inode, struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); struct buffer_head *local_bh = NULL; - BUG_ON(!inode); - mlog(0, "inode %llu, take %s META lock\n", (unsigned long long)OCFS2_I(inode)->ip_blkno, ex ? "EXMODE" : "PRMODE"); diff --git a/fs/ocfs2/inode.h b/fs/ocfs2/inode.h index d8f3fc8d2551..50cc55047443 100644 --- a/fs/ocfs2/inode.h +++ b/fs/ocfs2/inode.h @@ -145,22 +145,15 @@ int ocfs2_drop_inode(struct inode *inode); struct inode *ocfs2_ilookup(struct super_block *sb, u64 feoff); struct inode *ocfs2_iget(struct ocfs2_super *osb, u64 feoff, unsigned flags, int sysfile_type); -int ocfs2_inode_init_private(struct inode *inode); int ocfs2_inode_revalidate(struct dentry *dentry); void ocfs2_populate_inode(struct inode *inode, struct ocfs2_dinode *fe, int create_ino); -void ocfs2_read_inode(struct inode *inode); -void ocfs2_read_inode2(struct inode *inode, void *opaque); -ssize_t ocfs2_rw_direct(int rw, struct file *filp, char *buf, - size_t size, loff_t *offp); void ocfs2_sync_blockdev(struct super_block *sb); void ocfs2_refresh_inode(struct inode *inode, struct ocfs2_dinode *fe); int ocfs2_mark_inode_dirty(handle_t *handle, struct inode *inode, struct buffer_head *bh); -struct buffer_head *ocfs2_bread(struct inode *inode, - int block, int *err, int reada); void ocfs2_set_inode_flags(struct inode *inode); void ocfs2_get_inode_flags(struct ocfs2_inode_info *oi); diff --git a/fs/ocfs2/journal.c b/fs/ocfs2/journal.c index e607419cdfa4..a244f14c6b87 100644 --- a/fs/ocfs2/journal.c +++ b/fs/ocfs2/journal.c @@ -1159,10 +1159,8 @@ static int ocfs2_force_read_journal(struct inode *inode) int status = 0; int i; u64 v_blkno, p_blkno, p_blocks, num_blocks; -#define CONCURRENT_JOURNAL_FILL 32ULL - struct buffer_head *bhs[CONCURRENT_JOURNAL_FILL]; - - memset(bhs, 0, sizeof(struct buffer_head *) * CONCURRENT_JOURNAL_FILL); + struct buffer_head *bh = NULL; + struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); num_blocks = ocfs2_blocks_for_bytes(inode->i_sb, i_size_read(inode)); v_blkno = 0; @@ -1174,29 +1172,32 @@ static int ocfs2_force_read_journal(struct inode *inode) goto bail; } - if (p_blocks > CONCURRENT_JOURNAL_FILL) - p_blocks = CONCURRENT_JOURNAL_FILL; - - /* We are reading journal data which should not - * be put in the uptodate cache */ - status = ocfs2_read_blocks_sync(OCFS2_SB(inode->i_sb), - p_blkno, p_blocks, bhs); - if (status < 0) { - mlog_errno(status); - goto bail; - } + for (i = 0; i < p_blocks; i++, p_blkno++) { + bh = __find_get_block(osb->sb->s_bdev, p_blkno, + osb->sb->s_blocksize); + /* block not cached. */ + if (!bh) + continue; + + brelse(bh); + bh = NULL; + /* We are reading journal data which should not + * be put in the uptodate cache. + */ + status = ocfs2_read_blocks_sync(osb, p_blkno, 1, &bh); + if (status < 0) { + mlog_errno(status); + goto bail; + } - for(i = 0; i < p_blocks; i++) { - brelse(bhs[i]); - bhs[i] = NULL; + brelse(bh); + bh = NULL; } v_blkno += p_blocks; } bail: - for(i = 0; i < CONCURRENT_JOURNAL_FILL; i++) - brelse(bhs[i]); return status; } diff --git a/fs/ocfs2/quota_global.c b/fs/ocfs2/quota_global.c index ab6a6cdcf91c..87e577a49b0d 100644 --- a/fs/ocfs2/quota_global.c +++ b/fs/ocfs2/quota_global.c @@ -483,7 +483,7 @@ int __ocfs2_sync_dquot(struct dquot *dquot, int freeing) struct ocfs2_mem_dqinfo *info = sb_dqinfo(sb, type)->dqi_priv; struct ocfs2_global_disk_dqblk dqblk; s64 spacechange, inodechange; - time_t olditime, oldbtime; + time64_t olditime, oldbtime; err = sb->s_op->quota_read(sb, type, (char *)&dqblk, sizeof(struct ocfs2_global_disk_dqblk), diff --git a/fs/ocfs2/stackglue.c b/fs/ocfs2/stackglue.c index 13219ed73e1d..52c07346bea3 100644 --- a/fs/ocfs2/stackglue.c +++ b/fs/ocfs2/stackglue.c @@ -735,8 +735,6 @@ static void __exit ocfs2_stack_glue_exit(void) { memset(&locking_max_version, 0, sizeof(struct ocfs2_protocol_version)); - locking_max_version.pv_major = 0; - locking_max_version.pv_minor = 0; ocfs2_sysfs_exit(); if (ocfs2_table_header) unregister_sysctl_table(ocfs2_table_header); diff --git a/fs/ocfs2/super.c b/fs/ocfs2/super.c index 3971146228d3..603b28d6f008 100644 --- a/fs/ocfs2/super.c +++ b/fs/ocfs2/super.c @@ -2072,7 +2072,6 @@ static int ocfs2_initialize_super(struct super_block *sb, osb->osb_dx_seed[3] = le32_to_cpu(di->id2.i_super.s_uuid_hash); osb->sb = sb; - /* Save off for ocfs2_rw_direct */ osb->s_sectsize_bits = blksize_bits(sector_size); BUG_ON(!osb->s_sectsize_bits); diff --git a/fs/ocfs2/xattr.c b/fs/ocfs2/xattr.c index d2053853951e..5bb44f7a78ee 100644 --- a/fs/ocfs2/xattr.c +++ b/fs/ocfs2/xattr.c @@ -7344,7 +7344,7 @@ const struct xattr_handler ocfs2_xattr_trusted_handler = { * 'user' attributes support */ static int ocfs2_xattr_user_get(const struct xattr_handler *handler, - struct dentry *unusde, struct inode *inode, + struct dentry *unused, struct inode *inode, const char *name, void *buffer, size_t size) { struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); diff --git a/fs/open.c b/fs/open.c index 93ae3cdee4ab..bf66cf1a9f5c 100644 --- a/fs/open.c +++ b/fs/open.c @@ -840,13 +840,13 @@ EXPORT_SYMBOL(file_path); int vfs_open(const struct path *path, struct file *file, const struct cred *cred) { - struct inode *inode = vfs_select_inode(path->dentry, file->f_flags); + struct dentry *dentry = d_real(path->dentry, NULL, file->f_flags); - if (IS_ERR(inode)) - return PTR_ERR(inode); + if (IS_ERR(dentry)) + return PTR_ERR(dentry); file->f_path = *path; - return do_dentry_open(file, inode, NULL, cred); + return do_dentry_open(file, d_backing_inode(dentry), NULL, cred); } struct file *dentry_open(const struct path *path, int flags, diff --git a/fs/orangefs/acl.c b/fs/orangefs/acl.c index 03f89dbb2512..28f2195cd798 100644 --- a/fs/orangefs/acl.c +++ b/fs/orangefs/acl.c @@ -18,10 +18,10 @@ struct posix_acl *orangefs_get_acl(struct inode *inode, int type) switch (type) { case ACL_TYPE_ACCESS: - key = ORANGEFS_XATTR_NAME_ACL_ACCESS; + key = XATTR_NAME_POSIX_ACL_ACCESS; break; case ACL_TYPE_DEFAULT: - key = ORANGEFS_XATTR_NAME_ACL_DEFAULT; + key = XATTR_NAME_POSIX_ACL_DEFAULT; break; default: gossip_err("orangefs_get_acl: bogus value of type %d\n", type); @@ -43,11 +43,8 @@ struct posix_acl *orangefs_get_acl(struct inode *inode, int type) get_khandle_from_ino(inode), key, type); - ret = orangefs_inode_getxattr(inode, - "", - key, - value, - ORANGEFS_MAX_XATTR_VALUELEN); + ret = orangefs_inode_getxattr(inode, key, value, + ORANGEFS_MAX_XATTR_VALUELEN); /* if the key exists, convert it to an in-memory rep */ if (ret > 0) { acl = posix_acl_from_xattr(&init_user_ns, value, ret); @@ -74,7 +71,7 @@ int orangefs_set_acl(struct inode *inode, struct posix_acl *acl, int type) switch (type) { case ACL_TYPE_ACCESS: - name = ORANGEFS_XATTR_NAME_ACL_ACCESS; + name = XATTR_NAME_POSIX_ACL_ACCESS; if (acl) { umode_t mode = inode->i_mode; /* @@ -98,7 +95,7 @@ int orangefs_set_acl(struct inode *inode, struct posix_acl *acl, int type) } break; case ACL_TYPE_DEFAULT: - name = ORANGEFS_XATTR_NAME_ACL_DEFAULT; + name = XATTR_NAME_POSIX_ACL_DEFAULT; break; default: gossip_err("%s: invalid type %d!\n", __func__, type); @@ -131,7 +128,7 @@ int orangefs_set_acl(struct inode *inode, struct posix_acl *acl, int type) * will xlate to a removexattr. However, we don't want removexattr * complain if attributes does not exist. */ - error = orangefs_inode_setxattr(inode, "", name, value, size, 0); + error = orangefs_inode_setxattr(inode, name, value, size, 0); out: kfree(value); diff --git a/fs/orangefs/devorangefs-req.c b/fs/orangefs/devorangefs-req.c index db170beba797..a287a66d94e3 100644 --- a/fs/orangefs/devorangefs-req.c +++ b/fs/orangefs/devorangefs-req.c @@ -116,6 +116,13 @@ static int orangefs_devreq_open(struct inode *inode, struct file *file) { int ret = -EINVAL; + /* in order to ensure that the filesystem driver sees correct UIDs */ + if (file->f_cred->user_ns != &init_user_ns) { + gossip_err("%s: device cannot be opened outside init_user_ns\n", + __func__); + goto out; + } + if (!(file->f_flags & O_NONBLOCK)) { gossip_err("%s: device cannot be opened in blocking mode\n", __func__); diff --git a/fs/orangefs/file.c b/fs/orangefs/file.c index 491e82c6f705..526040e09f78 100644 --- a/fs/orangefs/file.c +++ b/fs/orangefs/file.c @@ -516,7 +516,6 @@ static long orangefs_ioctl(struct file *file, unsigned int cmd, unsigned long ar if (cmd == FS_IOC_GETFLAGS) { val = 0; ret = orangefs_inode_getxattr(file_inode(file), - ORANGEFS_XATTR_NAME_DEFAULT_PREFIX, "user.pvfs2.meta_hint", &val, sizeof(val)); if (ret < 0 && ret != -ENODATA) @@ -549,7 +548,6 @@ static long orangefs_ioctl(struct file *file, unsigned int cmd, unsigned long ar "orangefs_ioctl: FS_IOC_SETFLAGS: %llu\n", (unsigned long long)val); ret = orangefs_inode_setxattr(file_inode(file), - ORANGEFS_XATTR_NAME_DEFAULT_PREFIX, "user.pvfs2.meta_hint", &val, sizeof(val), 0); } diff --git a/fs/orangefs/inode.c b/fs/orangefs/inode.c index 85640e955cde..2e63e6d0a68e 100644 --- a/fs/orangefs/inode.c +++ b/fs/orangefs/inode.c @@ -80,7 +80,7 @@ static int orangefs_readpages(struct file *file, if (!add_to_page_cache(page, mapping, page->index, - GFP_KERNEL)) { + readahead_gfp_mask(mapping))) { ret = read_one_page(page); gossip_debug(GOSSIP_INODE_DEBUG, "failure adding page to cache, read_one_page returned: %d\n", @@ -124,19 +124,16 @@ static int orangefs_releasepage(struct page *page, gfp_t foo) * will need to be able to use O_DIRECT on open in order to support * AIO. Modeled after NFS, they do this too. */ -/* - * static ssize_t orangefs_direct_IO(int rw, - * struct kiocb *iocb, - * struct iov_iter *iter, - * loff_t offset) - *{ - * gossip_debug(GOSSIP_INODE_DEBUG, - * "orangefs_direct_IO: %s\n", - * iocb->ki_filp->f_path.dentry->d_name.name); - * - * return -EINVAL; - *} - */ + +static ssize_t orangefs_direct_IO(struct kiocb *iocb, + struct iov_iter *iter) +{ + gossip_debug(GOSSIP_INODE_DEBUG, + "orangefs_direct_IO: %s\n", + iocb->ki_filp->f_path.dentry->d_name.name); + + return -EINVAL; +} struct backing_dev_info orangefs_backing_dev_info = { .name = "orangefs", @@ -150,7 +147,7 @@ const struct address_space_operations orangefs_address_operations = { .readpages = orangefs_readpages, .invalidatepage = orangefs_invalidatepage, .releasepage = orangefs_releasepage, -/* .direct_IO = orangefs_direct_IO */ + .direct_IO = orangefs_direct_IO, }; static int orangefs_setattr_size(struct inode *inode, struct iattr *iattr) @@ -294,7 +291,7 @@ int orangefs_permission(struct inode *inode, int mask) } /* ORANGEDS2 implementation of VFS inode operations for files */ -struct inode_operations orangefs_file_inode_operations = { +const struct inode_operations orangefs_file_inode_operations = { .get_acl = orangefs_get_acl, .set_acl = orangefs_set_acl, .setattr = orangefs_setattr, diff --git a/fs/orangefs/namei.c b/fs/orangefs/namei.c index 5a60c508af4e..7e8dfa97c44a 100644 --- a/fs/orangefs/namei.c +++ b/fs/orangefs/namei.c @@ -405,12 +405,8 @@ static int orangefs_rename(struct inode *old_dir, int ret; gossip_debug(GOSSIP_NAME_DEBUG, - "orangefs_rename: called (%s/%s => %s/%s) ct=%d\n", - old_dentry->d_parent->d_name.name, - old_dentry->d_name.name, - new_dentry->d_parent->d_name.name, - new_dentry->d_name.name, - d_count(new_dentry)); + "orangefs_rename: called (%pd2 => %pd2) ct=%d\n", + old_dentry, new_dentry, d_count(new_dentry)); new_op = op_alloc(ORANGEFS_VFS_OP_RENAME); if (!new_op) @@ -442,7 +438,7 @@ static int orangefs_rename(struct inode *old_dir, } /* ORANGEFS implementation of VFS inode operations for directories */ -struct inode_operations orangefs_dir_inode_operations = { +const struct inode_operations orangefs_dir_inode_operations = { .lookup = orangefs_lookup, .get_acl = orangefs_get_acl, .set_acl = orangefs_set_acl, diff --git a/fs/orangefs/orangefs-cache.c b/fs/orangefs/orangefs-cache.c index 900a2e38e11b..b6edbe9fb309 100644 --- a/fs/orangefs/orangefs-cache.c +++ b/fs/orangefs/orangefs-cache.c @@ -136,10 +136,10 @@ struct orangefs_kernel_op_s *op_alloc(__s32 type) llu(new_op->tag), get_opname_string(new_op)); - new_op->upcall.uid = from_kuid(current_user_ns(), + new_op->upcall.uid = from_kuid(&init_user_ns, current_fsuid()); - new_op->upcall.gid = from_kgid(current_user_ns(), + new_op->upcall.gid = from_kgid(&init_user_ns, current_fsgid()); } else { gossip_err("op_alloc: kmem_cache_zalloc failed!\n"); diff --git a/fs/orangefs/orangefs-kernel.h b/fs/orangefs/orangefs-kernel.h index 2281882f718e..4b6e132d5a0f 100644 --- a/fs/orangefs/orangefs-kernel.h +++ b/fs/orangefs/orangefs-kernel.h @@ -119,17 +119,6 @@ struct client_debug_mask { #define ORANGEFS_CACHE_CREATE_FLAGS 0 #endif /* ((defined ORANGEFS_KERNEL_DEBUG) && (defined CONFIG_DEBUG_SLAB)) */ -/* orangefs xattr and acl related defines */ -#define ORANGEFS_XATTR_INDEX_POSIX_ACL_ACCESS 1 -#define ORANGEFS_XATTR_INDEX_POSIX_ACL_DEFAULT 2 -#define ORANGEFS_XATTR_INDEX_TRUSTED 3 -#define ORANGEFS_XATTR_INDEX_DEFAULT 4 - -#define ORANGEFS_XATTR_NAME_ACL_ACCESS XATTR_NAME_POSIX_ACL_ACCESS -#define ORANGEFS_XATTR_NAME_ACL_DEFAULT XATTR_NAME_POSIX_ACL_DEFAULT -#define ORANGEFS_XATTR_NAME_TRUSTED_PREFIX "trusted." -#define ORANGEFS_XATTR_NAME_DEFAULT_PREFIX "" - /* these functions are defined in orangefs-utils.c */ int orangefs_prepare_cdm_array(char *debug_array_string); int orangefs_prepare_debugfs_help_string(int); @@ -528,13 +517,11 @@ __s32 fsid_of_op(struct orangefs_kernel_op_s *op); int orangefs_flush_inode(struct inode *inode); ssize_t orangefs_inode_getxattr(struct inode *inode, - const char *prefix, const char *name, void *buffer, size_t size); int orangefs_inode_setxattr(struct inode *inode, - const char *prefix, const char *name, const void *value, size_t size, @@ -570,10 +557,10 @@ extern int hash_table_size; extern const struct address_space_operations orangefs_address_operations; extern struct backing_dev_info orangefs_backing_dev_info; -extern struct inode_operations orangefs_file_inode_operations; +extern const struct inode_operations orangefs_file_inode_operations; extern const struct file_operations orangefs_file_operations; -extern struct inode_operations orangefs_symlink_inode_operations; -extern struct inode_operations orangefs_dir_inode_operations; +extern const struct inode_operations orangefs_symlink_inode_operations; +extern const struct inode_operations orangefs_dir_inode_operations; extern const struct file_operations orangefs_dir_operations; extern const struct dentry_operations orangefs_dentry_operations; extern const struct file_operations orangefs_devreq_file_operations; @@ -600,8 +587,8 @@ int service_operation(struct orangefs_kernel_op_s *op, #define fill_default_sys_attrs(sys_attr, type, mode) \ do { \ - sys_attr.owner = from_kuid(current_user_ns(), current_fsuid()); \ - sys_attr.group = from_kgid(current_user_ns(), current_fsgid()); \ + sys_attr.owner = from_kuid(&init_user_ns, current_fsuid()); \ + sys_attr.group = from_kgid(&init_user_ns, current_fsgid()); \ sys_attr.perms = ORANGEFS_util_translate_mode(mode); \ sys_attr.mtime = 0; \ sys_attr.atime = 0; \ diff --git a/fs/orangefs/orangefs-utils.c b/fs/orangefs/orangefs-utils.c index 2d129b5886ee..c5fbc62357c6 100644 --- a/fs/orangefs/orangefs-utils.c +++ b/fs/orangefs/orangefs-utils.c @@ -153,12 +153,12 @@ static inline int copy_attributes_from_inode(struct inode *inode, */ attrs->mask = 0; if (iattr->ia_valid & ATTR_UID) { - attrs->owner = from_kuid(current_user_ns(), iattr->ia_uid); + attrs->owner = from_kuid(&init_user_ns, iattr->ia_uid); attrs->mask |= ORANGEFS_ATTR_SYS_UID; gossip_debug(GOSSIP_UTILS_DEBUG, "(UID) %d\n", attrs->owner); } if (iattr->ia_valid & ATTR_GID) { - attrs->group = from_kgid(current_user_ns(), iattr->ia_gid); + attrs->group = from_kgid(&init_user_ns, iattr->ia_gid); attrs->mask |= ORANGEFS_ATTR_SYS_GID; gossip_debug(GOSSIP_UTILS_DEBUG, "(GID) %d\n", attrs->group); } diff --git a/fs/orangefs/symlink.c b/fs/orangefs/symlink.c index 6418dd638680..8fecf823f5ba 100644 --- a/fs/orangefs/symlink.c +++ b/fs/orangefs/symlink.c @@ -8,7 +8,7 @@ #include "orangefs-kernel.h" #include "orangefs-bufmap.h" -struct inode_operations orangefs_symlink_inode_operations = { +const struct inode_operations orangefs_symlink_inode_operations = { .readlink = generic_readlink, .get_link = simple_get_link, .setattr = orangefs_setattr, diff --git a/fs/orangefs/xattr.c b/fs/orangefs/xattr.c index 5893ddde0e4b..2a9f07f06d10 100644 --- a/fs/orangefs/xattr.c +++ b/fs/orangefs/xattr.c @@ -59,8 +59,8 @@ static inline int convert_to_internal_xattr_flags(int setxattr_flags) * unless the key does not exist for the file and/or if * there were errors in fetching the attribute value. */ -ssize_t orangefs_inode_getxattr(struct inode *inode, const char *prefix, - const char *name, void *buffer, size_t size) +ssize_t orangefs_inode_getxattr(struct inode *inode, const char *name, + void *buffer, size_t size) { struct orangefs_inode_s *orangefs_inode = ORANGEFS_I(inode); struct orangefs_kernel_op_s *new_op = NULL; @@ -70,17 +70,17 @@ ssize_t orangefs_inode_getxattr(struct inode *inode, const char *prefix, int fsgid; gossip_debug(GOSSIP_XATTR_DEBUG, - "%s: prefix %s name %s, buffer_size %zd\n", - __func__, prefix, name, size); + "%s: name %s, buffer_size %zd\n", + __func__, name, size); - if ((strlen(name) + strlen(prefix)) >= ORANGEFS_MAX_XATTR_NAMELEN) { + if (strlen(name) >= ORANGEFS_MAX_XATTR_NAMELEN) { gossip_err("Invalid key length (%d)\n", - (int)(strlen(name) + strlen(prefix))); + (int)strlen(name)); return -EINVAL; } - fsuid = from_kuid(current_user_ns(), current_fsuid()); - fsgid = from_kgid(current_user_ns(), current_fsgid()); + fsuid = from_kuid(&init_user_ns, current_fsuid()); + fsgid = from_kgid(&init_user_ns, current_fsgid()); gossip_debug(GOSSIP_XATTR_DEBUG, "getxattr on inode %pU, name %s " @@ -97,15 +97,14 @@ ssize_t orangefs_inode_getxattr(struct inode *inode, const char *prefix, goto out_unlock; new_op->upcall.req.getxattr.refn = orangefs_inode->refn; - ret = snprintf((char *)new_op->upcall.req.getxattr.key, - ORANGEFS_MAX_XATTR_NAMELEN, "%s%s", prefix, name); + strcpy(new_op->upcall.req.getxattr.key, name); /* * NOTE: Although keys are meant to be NULL terminated textual * strings, I am going to explicitly pass the length just in case * we change this later on... */ - new_op->upcall.req.getxattr.key_sz = ret + 1; + new_op->upcall.req.getxattr.key_sz = strlen(name) + 1; ret = service_operation(new_op, "orangefs_inode_getxattr", get_interruptible_flag(inode)); @@ -163,10 +162,8 @@ out_unlock: return ret; } -static int orangefs_inode_removexattr(struct inode *inode, - const char *prefix, - const char *name, - int flags) +static int orangefs_inode_removexattr(struct inode *inode, const char *name, + int flags) { struct orangefs_inode_s *orangefs_inode = ORANGEFS_I(inode); struct orangefs_kernel_op_s *new_op = NULL; @@ -183,12 +180,8 @@ static int orangefs_inode_removexattr(struct inode *inode, * textual strings, I am going to explicitly pass the * length just in case we change this later on... */ - ret = snprintf((char *)new_op->upcall.req.removexattr.key, - ORANGEFS_MAX_XATTR_NAMELEN, - "%s%s", - (prefix ? prefix : ""), - name); - new_op->upcall.req.removexattr.key_sz = ret + 1; + strcpy(new_op->upcall.req.removexattr.key, name); + new_op->upcall.req.removexattr.key_sz = strlen(name) + 1; gossip_debug(GOSSIP_XATTR_DEBUG, "orangefs_inode_removexattr: key %s, key_sz %d\n", @@ -223,8 +216,8 @@ out_unlock: * Returns a -ve number on error and 0 on success. Key is text, but value * can be binary! */ -int orangefs_inode_setxattr(struct inode *inode, const char *prefix, - const char *name, const void *value, size_t size, int flags) +int orangefs_inode_setxattr(struct inode *inode, const char *name, + const void *value, size_t size, int flags) { struct orangefs_inode_s *orangefs_inode = ORANGEFS_I(inode); struct orangefs_kernel_op_s *new_op; @@ -232,8 +225,8 @@ int orangefs_inode_setxattr(struct inode *inode, const char *prefix, int ret = -ENOMEM; gossip_debug(GOSSIP_XATTR_DEBUG, - "%s: prefix %s, name %s, buffer_size %zd\n", - __func__, prefix, name, size); + "%s: name %s, buffer_size %zd\n", + __func__, name, size); if (size >= ORANGEFS_MAX_XATTR_VALUELEN || flags < 0) { @@ -245,29 +238,19 @@ int orangefs_inode_setxattr(struct inode *inode, const char *prefix, internal_flag = convert_to_internal_xattr_flags(flags); - if (prefix) { - if (strlen(name) + strlen(prefix) >= ORANGEFS_MAX_XATTR_NAMELEN) { - gossip_err - ("orangefs_inode_setxattr: bogus key size (%d)\n", - (int)(strlen(name) + strlen(prefix))); - return -EINVAL; - } - } else { - if (strlen(name) >= ORANGEFS_MAX_XATTR_NAMELEN) { - gossip_err - ("orangefs_inode_setxattr: bogus key size (%d)\n", - (int)(strlen(name))); - return -EINVAL; - } + if (strlen(name) >= ORANGEFS_MAX_XATTR_NAMELEN) { + gossip_err + ("orangefs_inode_setxattr: bogus key size (%d)\n", + (int)(strlen(name))); + return -EINVAL; } /* This is equivalent to a removexattr */ if (size == 0 && value == NULL) { gossip_debug(GOSSIP_XATTR_DEBUG, - "removing xattr (%s%s)\n", - prefix, + "removing xattr (%s)\n", name); - return orangefs_inode_removexattr(inode, prefix, name, flags); + return orangefs_inode_removexattr(inode, name, flags); } gossip_debug(GOSSIP_XATTR_DEBUG, @@ -288,11 +271,8 @@ int orangefs_inode_setxattr(struct inode *inode, const char *prefix, * strings, I am going to explicitly pass the length just in * case we change this later on... */ - ret = snprintf((char *)new_op->upcall.req.setxattr.keyval.key, - ORANGEFS_MAX_XATTR_NAMELEN, - "%s%s", - prefix, name); - new_op->upcall.req.setxattr.keyval.key_sz = ret + 1; + strcpy(new_op->upcall.req.setxattr.keyval.key, name); + new_op->upcall.req.setxattr.keyval.key_sz = strlen(name) + 1; memcpy(new_op->upcall.req.setxattr.keyval.val, value, size); new_op->upcall.req.setxattr.keyval.val_sz = size; @@ -455,12 +435,7 @@ static int orangefs_xattr_set_default(const struct xattr_handler *handler, size_t size, int flags) { - return orangefs_inode_setxattr(inode, - ORANGEFS_XATTR_NAME_DEFAULT_PREFIX, - name, - buffer, - size, - flags); + return orangefs_inode_setxattr(inode, name, buffer, size, flags); } static int orangefs_xattr_get_default(const struct xattr_handler *handler, @@ -470,57 +445,12 @@ static int orangefs_xattr_get_default(const struct xattr_handler *handler, void *buffer, size_t size) { - return orangefs_inode_getxattr(inode, - ORANGEFS_XATTR_NAME_DEFAULT_PREFIX, - name, - buffer, - size); - -} + return orangefs_inode_getxattr(inode, name, buffer, size); -static int orangefs_xattr_set_trusted(const struct xattr_handler *handler, - struct dentry *unused, - struct inode *inode, - const char *name, - const void *buffer, - size_t size, - int flags) -{ - return orangefs_inode_setxattr(inode, - ORANGEFS_XATTR_NAME_TRUSTED_PREFIX, - name, - buffer, - size, - flags); } -static int orangefs_xattr_get_trusted(const struct xattr_handler *handler, - struct dentry *unused, - struct inode *inode, - const char *name, - void *buffer, - size_t size) -{ - return orangefs_inode_getxattr(inode, - ORANGEFS_XATTR_NAME_TRUSTED_PREFIX, - name, - buffer, - size); -} - -static struct xattr_handler orangefs_xattr_trusted_handler = { - .prefix = ORANGEFS_XATTR_NAME_TRUSTED_PREFIX, - .get = orangefs_xattr_get_trusted, - .set = orangefs_xattr_set_trusted, -}; - static struct xattr_handler orangefs_xattr_default_handler = { - /* - * NOTE: this is set to be the empty string. - * so that all un-prefixed xattrs keys get caught - * here! - */ - .prefix = ORANGEFS_XATTR_NAME_DEFAULT_PREFIX, + .prefix = "", /* match any name => handlers called with full name */ .get = orangefs_xattr_get_default, .set = orangefs_xattr_set_default, }; @@ -528,7 +458,6 @@ static struct xattr_handler orangefs_xattr_default_handler = { const struct xattr_handler *orangefs_xattr_handlers[] = { &posix_acl_access_xattr_handler, &posix_acl_default_xattr_handler, - &orangefs_xattr_trusted_handler, &orangefs_xattr_default_handler, NULL }; diff --git a/fs/overlayfs/copy_up.c b/fs/overlayfs/copy_up.c index 80aa6f1eb336..54e5d6681786 100644 --- a/fs/overlayfs/copy_up.c +++ b/fs/overlayfs/copy_up.c @@ -292,6 +292,7 @@ static int ovl_copy_up_locked(struct dentry *workdir, struct dentry *upperdir, goto out_cleanup; ovl_dentry_update(dentry, newdentry); + ovl_inode_update(d_inode(dentry), d_inode(newdentry)); newdentry = NULL; /* diff --git a/fs/overlayfs/dir.c b/fs/overlayfs/dir.c index 5c9d2d80ff70..12bcd07b9e32 100644 --- a/fs/overlayfs/dir.c +++ b/fs/overlayfs/dir.c @@ -138,9 +138,12 @@ static int ovl_dir_getattr(struct vfsmount *mnt, struct dentry *dentry, int err; enum ovl_path_type type; struct path realpath; + const struct cred *old_cred; type = ovl_path_real(dentry, &realpath); + old_cred = ovl_override_creds(dentry->d_sb); err = vfs_getattr(&realpath, stat); + revert_creds(old_cred); if (err) return err; @@ -158,6 +161,22 @@ static int ovl_dir_getattr(struct vfsmount *mnt, struct dentry *dentry, return 0; } +/* Common operations required to be done after creation of file on upper */ +static void ovl_instantiate(struct dentry *dentry, struct inode *inode, + struct dentry *newdentry, bool hardlink) +{ + ovl_dentry_version_inc(dentry->d_parent); + ovl_dentry_update(dentry, newdentry); + if (!hardlink) { + ovl_inode_update(inode, d_inode(newdentry)); + ovl_copyattr(newdentry->d_inode, inode); + } else { + WARN_ON(ovl_inode_real(inode, NULL) != d_inode(newdentry)); + inc_nlink(inode); + } + d_instantiate(dentry, inode); +} + static int ovl_create_upper(struct dentry *dentry, struct inode *inode, struct kstat *stat, const char *link, struct dentry *hardlink) @@ -177,10 +196,7 @@ static int ovl_create_upper(struct dentry *dentry, struct inode *inode, if (err) goto out_dput; - ovl_dentry_version_inc(dentry->d_parent); - ovl_dentry_update(dentry, newdentry); - ovl_copyattr(newdentry->d_inode, inode); - d_instantiate(dentry, inode); + ovl_instantiate(dentry, inode, newdentry, !!hardlink); newdentry = NULL; out_dput: dput(newdentry); @@ -291,23 +307,29 @@ static struct dentry *ovl_check_empty_and_clear(struct dentry *dentry) { int err; struct dentry *ret = NULL; + enum ovl_path_type type = ovl_path_type(dentry); LIST_HEAD(list); err = ovl_check_empty_dir(dentry, &list); - if (err) + if (err) { ret = ERR_PTR(err); - else { - /* - * If no upperdentry then skip clearing whiteouts. - * - * Can race with copy-up, since we don't hold the upperdir - * mutex. Doesn't matter, since copy-up can't create a - * non-empty directory from an empty one. - */ - if (ovl_dentry_upper(dentry)) - ret = ovl_clear_empty(dentry, &list); + goto out_free; } + /* + * When removing an empty opaque directory, then it makes no sense to + * replace it with an exact replica of itself. + * + * If no upperdentry then skip clearing whiteouts. + * + * Can race with copy-up, since we don't hold the upperdir mutex. + * Doesn't matter, since copy-up can't create a non-empty directory + * from an empty one. + */ + if (OVL_TYPE_UPPER(type) && OVL_TYPE_MERGE(type)) + ret = ovl_clear_empty(dentry, &list); + +out_free: ovl_cache_free(&list); return ret; @@ -347,7 +369,23 @@ static int ovl_create_over_whiteout(struct dentry *dentry, struct inode *inode, if (err) goto out_dput2; - if (S_ISDIR(stat->mode)) { + /* + * mode could have been mutilated due to umask (e.g. sgid directory) + */ + if (!hardlink && + !S_ISLNK(stat->mode) && newdentry->d_inode->i_mode != stat->mode) { + struct iattr attr = { + .ia_valid = ATTR_MODE, + .ia_mode = stat->mode, + }; + inode_lock(newdentry->d_inode); + err = notify_change(newdentry, &attr, NULL); + inode_unlock(newdentry->d_inode); + if (err) + goto out_cleanup; + } + + if (!hardlink && S_ISDIR(stat->mode)) { err = ovl_set_opaque(newdentry); if (err) goto out_cleanup; @@ -363,10 +401,7 @@ static int ovl_create_over_whiteout(struct dentry *dentry, struct inode *inode, if (err) goto out_cleanup; } - ovl_dentry_version_inc(dentry->d_parent); - ovl_dentry_update(dentry, newdentry); - ovl_copyattr(newdentry->d_inode, inode); - d_instantiate(dentry, inode); + ovl_instantiate(dentry, inode, newdentry, !!hardlink); newdentry = NULL; out_dput2: dput(upper); @@ -382,52 +417,42 @@ out_cleanup: goto out_dput2; } -static int ovl_create_or_link(struct dentry *dentry, int mode, dev_t rdev, - const char *link, struct dentry *hardlink) +static int ovl_create_or_link(struct dentry *dentry, struct inode *inode, + struct kstat *stat, const char *link, + struct dentry *hardlink) { int err; - struct inode *inode; - struct kstat stat = { - .mode = mode, - .rdev = rdev, - }; - - err = -ENOMEM; - inode = ovl_new_inode(dentry->d_sb, mode, dentry->d_fsdata); - if (!inode) - goto out; + const struct cred *old_cred; + struct cred *override_cred; err = ovl_copy_up(dentry->d_parent); if (err) - goto out_iput; - - if (!ovl_dentry_is_opaque(dentry)) { - err = ovl_create_upper(dentry, inode, &stat, link, hardlink); - } else { - const struct cred *old_cred; - struct cred *override_cred; - - old_cred = ovl_override_creds(dentry->d_sb); - - err = -ENOMEM; - override_cred = prepare_creds(); - if (override_cred) { - override_cred->fsuid = old_cred->fsuid; - override_cred->fsgid = old_cred->fsgid; - put_cred(override_creds(override_cred)); - put_cred(override_cred); + return err; - err = ovl_create_over_whiteout(dentry, inode, &stat, - link, hardlink); - } - revert_creds(old_cred); + old_cred = ovl_override_creds(dentry->d_sb); + err = -ENOMEM; + override_cred = prepare_creds(); + if (override_cred) { + override_cred->fsuid = inode->i_uid; + override_cred->fsgid = inode->i_gid; + put_cred(override_creds(override_cred)); + put_cred(override_cred); + + if (!ovl_dentry_is_opaque(dentry)) + err = ovl_create_upper(dentry, inode, stat, link, + hardlink); + else + err = ovl_create_over_whiteout(dentry, inode, stat, + link, hardlink); } + revert_creds(old_cred); + if (!err) { + struct inode *realinode = d_inode(ovl_dentry_upper(dentry)); - if (!err) - inode = NULL; -out_iput: - iput(inode); -out: + WARN_ON(inode->i_mode != realinode->i_mode); + WARN_ON(!uid_eq(inode->i_uid, realinode->i_uid)); + WARN_ON(!gid_eq(inode->i_gid, realinode->i_gid)); + } return err; } @@ -435,13 +460,30 @@ static int ovl_create_object(struct dentry *dentry, int mode, dev_t rdev, const char *link) { int err; + struct inode *inode; + struct kstat stat = { + .rdev = rdev, + }; err = ovl_want_write(dentry); - if (!err) { - err = ovl_create_or_link(dentry, mode, rdev, link, NULL); - ovl_drop_write(dentry); - } + if (err) + goto out; + + err = -ENOMEM; + inode = ovl_new_inode(dentry->d_sb, mode); + if (!inode) + goto out_drop_write; + + inode_init_owner(inode, dentry->d_parent->d_inode, mode); + stat.mode = inode->i_mode; + err = ovl_create_or_link(dentry, inode, &stat, link, NULL); + if (err) + iput(inode); + +out_drop_write: + ovl_drop_write(dentry); +out: return err; } @@ -476,7 +518,7 @@ static int ovl_link(struct dentry *old, struct inode *newdir, struct dentry *new) { int err; - struct dentry *upper; + struct inode *inode; err = ovl_want_write(old); if (err) @@ -486,8 +528,12 @@ static int ovl_link(struct dentry *old, struct inode *newdir, if (err) goto out_drop_write; - upper = ovl_dentry_upper(old); - err = ovl_create_or_link(new, upper->d_inode->i_mode, 0, NULL, upper); + inode = d_inode(old); + ihold(inode); + + err = ovl_create_or_link(new, inode, NULL, NULL, ovl_dentry_upper(old)); + if (err) + iput(inode); out_drop_write: ovl_drop_write(old); @@ -511,24 +557,10 @@ static int ovl_remove_and_whiteout(struct dentry *dentry, bool is_dir) return -EROFS; if (is_dir) { - if (OVL_TYPE_MERGE_OR_LOWER(ovl_path_type(dentry))) { - opaquedir = ovl_check_empty_and_clear(dentry); - err = PTR_ERR(opaquedir); - if (IS_ERR(opaquedir)) - goto out; - } else { - LIST_HEAD(list); - - /* - * When removing an empty opaque directory, then it - * makes no sense to replace it with an exact replica of - * itself. But emptiness still needs to be checked. - */ - err = ovl_check_empty_dir(dentry, &list); - ovl_cache_free(&list); - if (err) - goto out; - } + opaquedir = ovl_check_empty_and_clear(dentry); + err = PTR_ERR(opaquedir); + if (IS_ERR(opaquedir)) + goto out; } err = ovl_lock_rename_workdir(workdir, upperdir); @@ -633,6 +665,8 @@ static int ovl_do_remove(struct dentry *dentry, bool is_dir) { enum ovl_path_type type; int err; + const struct cred *old_cred; + err = ovl_check_sticky(dentry); if (err) @@ -647,14 +681,18 @@ static int ovl_do_remove(struct dentry *dentry, bool is_dir) goto out_drop_write; type = ovl_path_type(dentry); - if (OVL_TYPE_PURE_UPPER(type)) { - err = ovl_remove_upper(dentry, is_dir); - } else { - const struct cred *old_cred = ovl_override_creds(dentry->d_sb); + old_cred = ovl_override_creds(dentry->d_sb); + if (OVL_TYPE_PURE_UPPER(type)) + err = ovl_remove_upper(dentry, is_dir); + else err = ovl_remove_and_whiteout(dentry, is_dir); - - revert_creds(old_cred); + revert_creds(old_cred); + if (!err) { + if (is_dir) + clear_nlink(dentry->d_inode); + else + drop_nlink(dentry->d_inode); } out_drop_write: ovl_drop_write(dentry); @@ -760,8 +798,7 @@ static int ovl_rename2(struct inode *olddir, struct dentry *old, old_opaque = !OVL_TYPE_PURE_UPPER(old_type); new_opaque = !OVL_TYPE_PURE_UPPER(new_type); - if (old_opaque || new_opaque) - old_cred = ovl_override_creds(old->d_sb); + old_cred = ovl_override_creds(old->d_sb); if (overwrite && OVL_TYPE_MERGE_OR_LOWER(new_type) && new_is_dir) { opaquedir = ovl_check_empty_and_clear(new); @@ -891,8 +928,7 @@ out_dput_old: out_unlock: unlock_rename(new_upperdir, old_upperdir); out_revert_creds: - if (old_opaque || new_opaque) - revert_creds(old_cred); + revert_creds(old_cred); out_drop_write: ovl_drop_write(old); out: @@ -913,8 +949,10 @@ const struct inode_operations ovl_dir_inode_operations = { .mknod = ovl_mknod, .permission = ovl_permission, .getattr = ovl_dir_getattr, - .setxattr = ovl_setxattr, + .setxattr = generic_setxattr, .getxattr = ovl_getxattr, .listxattr = ovl_listxattr, .removexattr = ovl_removexattr, + .get_acl = ovl_get_acl, + .update_time = ovl_update_time, }; diff --git a/fs/overlayfs/inode.c b/fs/overlayfs/inode.c index d1cdc60dd68f..1b885c156028 100644 --- a/fs/overlayfs/inode.c +++ b/fs/overlayfs/inode.c @@ -41,6 +41,7 @@ int ovl_setattr(struct dentry *dentry, struct iattr *attr) { int err; struct dentry *upperdentry; + const struct cred *old_cred; /* * Check for permissions before trying to copy-up. This is redundant @@ -84,7 +85,9 @@ int ovl_setattr(struct dentry *dentry, struct iattr *attr) attr->ia_valid &= ~ATTR_MODE; inode_lock(upperdentry->d_inode); + old_cred = ovl_override_creds(dentry->d_sb); err = notify_change(upperdentry, attr, NULL); + revert_creds(old_cred); if (!err) ovl_copyattr(upperdentry->d_inode, dentry->d_inode); inode_unlock(upperdentry->d_inode); @@ -102,96 +105,46 @@ static int ovl_getattr(struct vfsmount *mnt, struct dentry *dentry, struct kstat *stat) { struct path realpath; + const struct cred *old_cred; + int err; ovl_path_real(dentry, &realpath); - return vfs_getattr(&realpath, stat); + old_cred = ovl_override_creds(dentry->d_sb); + err = vfs_getattr(&realpath, stat); + revert_creds(old_cred); + return err; } int ovl_permission(struct inode *inode, int mask) { - struct ovl_entry *oe; - struct dentry *alias = NULL; - struct inode *realinode; - struct dentry *realdentry; bool is_upper; + struct inode *realinode = ovl_inode_real(inode, &is_upper); + const struct cred *old_cred; int err; - if (S_ISDIR(inode->i_mode)) { - oe = inode->i_private; - } else if (mask & MAY_NOT_BLOCK) { - return -ECHILD; - } else { - /* - * For non-directories find an alias and get the info - * from there. - */ - alias = d_find_any_alias(inode); - if (WARN_ON(!alias)) - return -ENOENT; - - oe = alias->d_fsdata; - } - - realdentry = ovl_entry_real(oe, &is_upper); - - if (ovl_is_default_permissions(inode)) { - struct kstat stat; - struct path realpath = { .dentry = realdentry }; - - if (mask & MAY_NOT_BLOCK) - return -ECHILD; - - realpath.mnt = ovl_entry_mnt_real(oe, inode, is_upper); - - err = vfs_getattr(&realpath, &stat); - if (err) - goto out_dput; - - err = -ESTALE; - if ((stat.mode ^ inode->i_mode) & S_IFMT) - goto out_dput; - - inode->i_mode = stat.mode; - inode->i_uid = stat.uid; - inode->i_gid = stat.gid; - - err = generic_permission(inode, mask); - goto out_dput; - } - /* Careful in RCU walk mode */ - realinode = ACCESS_ONCE(realdentry->d_inode); if (!realinode) { WARN_ON(!(mask & MAY_NOT_BLOCK)); - err = -ENOENT; - goto out_dput; + return -ECHILD; } - if (mask & MAY_WRITE) { - umode_t mode = realinode->i_mode; - - /* - * Writes will always be redirected to upper layer, so - * ignore lower layer being read-only. - * - * If the overlay itself is read-only then proceed - * with the permission check, don't return EROFS. - * This will only happen if this is the lower layer of - * another overlayfs. - * - * If upper fs becomes read-only after the overlay was - * constructed return EROFS to prevent modification of - * upper layer. - */ - err = -EROFS; - if (is_upper && !IS_RDONLY(inode) && IS_RDONLY(realinode) && - (S_ISREG(mode) || S_ISDIR(mode) || S_ISLNK(mode))) - goto out_dput; + /* + * Check overlay inode with the creds of task and underlying inode + * with creds of mounter + */ + err = generic_permission(inode, mask); + if (err) + return err; + + old_cred = ovl_override_creds(inode->i_sb); + if (!is_upper && !special_file(realinode->i_mode) && mask & MAY_WRITE) { + mask &= ~(MAY_WRITE | MAY_APPEND); + /* Make sure mounter can read file for copy up later */ + mask |= MAY_READ; } + err = inode_permission(realinode, mask); + revert_creds(old_cred); - err = __inode_permission(realinode, mask); -out_dput: - dput(alias); return err; } @@ -201,6 +154,8 @@ static const char *ovl_get_link(struct dentry *dentry, { struct dentry *realdentry; struct inode *realinode; + const struct cred *old_cred; + const char *p; if (!dentry) return ERR_PTR(-ECHILD); @@ -211,13 +166,18 @@ static const char *ovl_get_link(struct dentry *dentry, if (WARN_ON(!realinode->i_op->get_link)) return ERR_PTR(-EPERM); - return realinode->i_op->get_link(realdentry, realinode, done); + old_cred = ovl_override_creds(dentry->d_sb); + p = realinode->i_op->get_link(realdentry, realinode, done); + revert_creds(old_cred); + return p; } static int ovl_readlink(struct dentry *dentry, char __user *buf, int bufsiz) { struct path realpath; struct inode *realinode; + const struct cred *old_cred; + int err; ovl_path_real(dentry, &realpath); realinode = realpath.dentry->d_inode; @@ -225,15 +185,17 @@ static int ovl_readlink(struct dentry *dentry, char __user *buf, int bufsiz) if (!realinode->i_op->readlink) return -EINVAL; - touch_atime(&realpath); - - return realinode->i_op->readlink(realpath.dentry, buf, bufsiz); + old_cred = ovl_override_creds(dentry->d_sb); + err = realinode->i_op->readlink(realpath.dentry, buf, bufsiz); + revert_creds(old_cred); + return err; } - static bool ovl_is_private_xattr(const char *name) { - return strncmp(name, OVL_XATTR_PRE_NAME, OVL_XATTR_PRE_LEN) == 0; +#define OVL_XATTR_PRE_NAME OVL_XATTR_PREFIX "." + return strncmp(name, OVL_XATTR_PRE_NAME, + sizeof(OVL_XATTR_PRE_NAME) - 1) == 0; } int ovl_setxattr(struct dentry *dentry, struct inode *inode, @@ -242,21 +204,20 @@ int ovl_setxattr(struct dentry *dentry, struct inode *inode, { int err; struct dentry *upperdentry; + const struct cred *old_cred; err = ovl_want_write(dentry); if (err) goto out; - err = -EPERM; - if (ovl_is_private_xattr(name)) - goto out_drop_write; - err = ovl_copy_up(dentry); if (err) goto out_drop_write; upperdentry = ovl_dentry_upper(dentry); + old_cred = ovl_override_creds(dentry->d_sb); err = vfs_setxattr(upperdentry, name, value, size, flags); + revert_creds(old_cred); out_drop_write: ovl_drop_write(dentry); @@ -268,11 +229,16 @@ ssize_t ovl_getxattr(struct dentry *dentry, struct inode *inode, const char *name, void *value, size_t size) { struct dentry *realdentry = ovl_dentry_real(dentry); + ssize_t res; + const struct cred *old_cred; if (ovl_is_private_xattr(name)) return -ENODATA; - return vfs_getxattr(realdentry, name, value, size); + old_cred = ovl_override_creds(dentry->d_sb); + res = vfs_getxattr(realdentry, name, value, size); + revert_creds(old_cred); + return res; } ssize_t ovl_listxattr(struct dentry *dentry, char *list, size_t size) @@ -280,8 +246,11 @@ ssize_t ovl_listxattr(struct dentry *dentry, char *list, size_t size) struct dentry *realdentry = ovl_dentry_real(dentry); ssize_t res; int off; + const struct cred *old_cred; + old_cred = ovl_override_creds(dentry->d_sb); res = vfs_listxattr(realdentry, list, size); + revert_creds(old_cred); if (res <= 0 || size == 0) return res; @@ -308,6 +277,7 @@ int ovl_removexattr(struct dentry *dentry, const char *name) int err; struct path realpath; enum ovl_path_type type = ovl_path_real(dentry, &realpath); + const struct cred *old_cred; err = ovl_want_write(dentry); if (err) @@ -329,13 +299,34 @@ int ovl_removexattr(struct dentry *dentry, const char *name) ovl_path_upper(dentry, &realpath); } + old_cred = ovl_override_creds(dentry->d_sb); err = vfs_removexattr(realpath.dentry, name); + revert_creds(old_cred); out_drop_write: ovl_drop_write(dentry); out: return err; } +struct posix_acl *ovl_get_acl(struct inode *inode, int type) +{ + struct inode *realinode = ovl_inode_real(inode, NULL); + const struct cred *old_cred; + struct posix_acl *acl; + + if (!IS_POSIXACL(realinode)) + return NULL; + + if (!realinode->i_op->get_acl) + return NULL; + + old_cred = ovl_override_creds(inode->i_sb); + acl = realinode->i_op->get_acl(realinode, type); + revert_creds(old_cred); + + return acl; +} + static bool ovl_open_need_copy_up(int flags, enum ovl_path_type type, struct dentry *realdentry) { @@ -351,46 +342,60 @@ static bool ovl_open_need_copy_up(int flags, enum ovl_path_type type, return true; } -struct inode *ovl_d_select_inode(struct dentry *dentry, unsigned file_flags) +int ovl_open_maybe_copy_up(struct dentry *dentry, unsigned int file_flags) { - int err; + int err = 0; struct path realpath; enum ovl_path_type type; - if (d_is_dir(dentry)) - return d_backing_inode(dentry); - type = ovl_path_real(dentry, &realpath); if (ovl_open_need_copy_up(file_flags, type, realpath.dentry)) { err = ovl_want_write(dentry); - if (err) - return ERR_PTR(err); + if (!err) { + if (file_flags & O_TRUNC) + err = ovl_copy_up_truncate(dentry); + else + err = ovl_copy_up(dentry); + ovl_drop_write(dentry); + } + } - if (file_flags & O_TRUNC) - err = ovl_copy_up_truncate(dentry); - else - err = ovl_copy_up(dentry); - ovl_drop_write(dentry); - if (err) - return ERR_PTR(err); + return err; +} - ovl_path_upper(dentry, &realpath); +int ovl_update_time(struct inode *inode, struct timespec *ts, int flags) +{ + struct dentry *alias; + struct path upperpath; + + if (!(flags & S_ATIME)) + return 0; + + alias = d_find_any_alias(inode); + if (!alias) + return 0; + + ovl_path_upper(alias, &upperpath); + if (upperpath.dentry) { + touch_atime(&upperpath); + inode->i_atime = d_inode(upperpath.dentry)->i_atime; } - if (realpath.dentry->d_flags & DCACHE_OP_SELECT_INODE) - return realpath.dentry->d_op->d_select_inode(realpath.dentry, file_flags); + dput(alias); - return d_backing_inode(realpath.dentry); + return 0; } static const struct inode_operations ovl_file_inode_operations = { .setattr = ovl_setattr, .permission = ovl_permission, .getattr = ovl_getattr, - .setxattr = ovl_setxattr, + .setxattr = generic_setxattr, .getxattr = ovl_getxattr, .listxattr = ovl_listxattr, .removexattr = ovl_removexattr, + .get_acl = ovl_get_acl, + .update_time = ovl_update_time, }; static const struct inode_operations ovl_symlink_inode_operations = { @@ -398,29 +403,22 @@ static const struct inode_operations ovl_symlink_inode_operations = { .get_link = ovl_get_link, .readlink = ovl_readlink, .getattr = ovl_getattr, - .setxattr = ovl_setxattr, + .setxattr = generic_setxattr, .getxattr = ovl_getxattr, .listxattr = ovl_listxattr, .removexattr = ovl_removexattr, + .update_time = ovl_update_time, }; -struct inode *ovl_new_inode(struct super_block *sb, umode_t mode, - struct ovl_entry *oe) +static void ovl_fill_inode(struct inode *inode, umode_t mode) { - struct inode *inode; - - inode = new_inode(sb); - if (!inode) - return NULL; - inode->i_ino = get_next_ino(); inode->i_mode = mode; - inode->i_flags |= S_NOATIME | S_NOCMTIME; + inode->i_flags |= S_NOCMTIME; mode &= S_IFMT; switch (mode) { case S_IFDIR: - inode->i_private = oe; inode->i_op = &ovl_dir_inode_operations; inode->i_fop = &ovl_dir_operations; break; @@ -429,6 +427,10 @@ struct inode *ovl_new_inode(struct super_block *sb, umode_t mode, inode->i_op = &ovl_symlink_inode_operations; break; + default: + WARN(1, "illegal file type: %i\n", mode); + /* Fall through */ + case S_IFREG: case S_IFSOCK: case S_IFBLK: @@ -436,11 +438,42 @@ struct inode *ovl_new_inode(struct super_block *sb, umode_t mode, case S_IFIFO: inode->i_op = &ovl_file_inode_operations; break; + } +} - default: - WARN(1, "illegal file type: %i\n", mode); - iput(inode); - inode = NULL; +struct inode *ovl_new_inode(struct super_block *sb, umode_t mode) +{ + struct inode *inode; + + inode = new_inode(sb); + if (inode) + ovl_fill_inode(inode, mode); + + return inode; +} + +static int ovl_inode_test(struct inode *inode, void *data) +{ + return ovl_inode_real(inode, NULL) == data; +} + +static int ovl_inode_set(struct inode *inode, void *data) +{ + inode->i_private = (void *) (((unsigned long) data) | OVL_ISUPPER_MASK); + return 0; +} + +struct inode *ovl_get_inode(struct super_block *sb, struct inode *realinode) + +{ + struct inode *inode; + + inode = iget5_locked(sb, (unsigned long) realinode, + ovl_inode_test, ovl_inode_set, realinode); + if (inode && inode->i_state & I_NEW) { + ovl_fill_inode(inode, realinode->i_mode); + set_nlink(inode, realinode->i_nlink); + unlock_new_inode(inode); } return inode; diff --git a/fs/overlayfs/overlayfs.h b/fs/overlayfs/overlayfs.h index cfbca53590d0..e4f5c9536bfe 100644 --- a/fs/overlayfs/overlayfs.h +++ b/fs/overlayfs/overlayfs.h @@ -23,9 +23,11 @@ enum ovl_path_type { #define OVL_TYPE_MERGE_OR_LOWER(type) \ (OVL_TYPE_MERGE(type) || !OVL_TYPE_UPPER(type)) -#define OVL_XATTR_PRE_NAME "trusted.overlay." -#define OVL_XATTR_PRE_LEN 16 -#define OVL_XATTR_OPAQUE OVL_XATTR_PRE_NAME"opaque" + +#define OVL_XATTR_PREFIX XATTR_TRUSTED_PREFIX "overlay" +#define OVL_XATTR_OPAQUE OVL_XATTR_PREFIX ".opaque" + +#define OVL_ISUPPER_MASK 1UL static inline int ovl_do_rmdir(struct inode *dir, struct dentry *dentry) { @@ -131,6 +133,16 @@ static inline int ovl_do_whiteout(struct inode *dir, struct dentry *dentry) return err; } +static inline struct inode *ovl_inode_real(struct inode *inode, bool *is_upper) +{ + unsigned long x = (unsigned long) READ_ONCE(inode->i_private); + + if (is_upper) + *is_upper = x & OVL_ISUPPER_MASK; + + return (struct inode *) (x & ~OVL_ISUPPER_MASK); +} + enum ovl_path_type ovl_path_type(struct dentry *dentry); u64 ovl_dentry_version_get(struct dentry *dentry); void ovl_dentry_version_inc(struct dentry *dentry); @@ -141,11 +153,9 @@ int ovl_path_next(int idx, struct dentry *dentry, struct path *path); struct dentry *ovl_dentry_upper(struct dentry *dentry); struct dentry *ovl_dentry_lower(struct dentry *dentry); struct dentry *ovl_dentry_real(struct dentry *dentry); -struct dentry *ovl_entry_real(struct ovl_entry *oe, bool *is_upper); struct vfsmount *ovl_entry_mnt_real(struct ovl_entry *oe, struct inode *inode, bool is_upper); struct ovl_dir_cache *ovl_dir_cache(struct dentry *dentry); -bool ovl_is_default_permissions(struct inode *inode); void ovl_set_dir_cache(struct dentry *dentry, struct ovl_dir_cache *cache); struct dentry *ovl_workdir(struct dentry *dentry); int ovl_want_write(struct dentry *dentry); @@ -155,6 +165,7 @@ void ovl_dentry_set_opaque(struct dentry *dentry, bool opaque); bool ovl_is_whiteout(struct dentry *dentry); const struct cred *ovl_override_creds(struct super_block *sb); void ovl_dentry_update(struct dentry *dentry, struct dentry *upperdentry); +void ovl_inode_update(struct inode *inode, struct inode *upperinode); struct dentry *ovl_lookup(struct inode *dir, struct dentry *dentry, unsigned int flags); struct file *ovl_path_open(struct path *path, int flags); @@ -179,15 +190,20 @@ ssize_t ovl_getxattr(struct dentry *dentry, struct inode *inode, const char *name, void *value, size_t size); ssize_t ovl_listxattr(struct dentry *dentry, char *list, size_t size); int ovl_removexattr(struct dentry *dentry, const char *name); -struct inode *ovl_d_select_inode(struct dentry *dentry, unsigned file_flags); +struct posix_acl *ovl_get_acl(struct inode *inode, int type); +int ovl_open_maybe_copy_up(struct dentry *dentry, unsigned int file_flags); +int ovl_update_time(struct inode *inode, struct timespec *ts, int flags); -struct inode *ovl_new_inode(struct super_block *sb, umode_t mode, - struct ovl_entry *oe); +struct inode *ovl_new_inode(struct super_block *sb, umode_t mode); +struct inode *ovl_get_inode(struct super_block *sb, struct inode *realinode); static inline void ovl_copyattr(struct inode *from, struct inode *to) { to->i_uid = from->i_uid; to->i_gid = from->i_gid; to->i_mode = from->i_mode; + to->i_atime = from->i_atime; + to->i_mtime = from->i_mtime; + to->i_ctime = from->i_ctime; } /* dir.c */ diff --git a/fs/overlayfs/super.c b/fs/overlayfs/super.c index 9a7693d5f8ff..4036132842b5 100644 --- a/fs/overlayfs/super.c +++ b/fs/overlayfs/super.c @@ -16,10 +16,10 @@ #include <linux/slab.h> #include <linux/parser.h> #include <linux/module.h> -#include <linux/pagemap.h> #include <linux/sched.h> #include <linux/statfs.h> #include <linux/seq_file.h> +#include <linux/posix_acl_xattr.h> #include "overlayfs.h" MODULE_AUTHOR("Miklos Szeredi <miklos@szeredi.hu>"); @@ -145,18 +145,11 @@ struct dentry *ovl_dentry_real(struct dentry *dentry) return realdentry; } -struct dentry *ovl_entry_real(struct ovl_entry *oe, bool *is_upper) +static void ovl_inode_init(struct inode *inode, struct inode *realinode, + bool is_upper) { - struct dentry *realdentry; - - realdentry = ovl_upperdentry_dereference(oe); - if (realdentry) { - *is_upper = true; - } else { - realdentry = __ovl_dentry_lower(oe); - *is_upper = false; - } - return realdentry; + WRITE_ONCE(inode->i_private, (unsigned long) realinode | + (is_upper ? OVL_ISUPPER_MASK : 0)); } struct vfsmount *ovl_entry_mnt_real(struct ovl_entry *oe, struct inode *inode, @@ -178,13 +171,6 @@ struct ovl_dir_cache *ovl_dir_cache(struct dentry *dentry) return oe->cache; } -bool ovl_is_default_permissions(struct inode *inode) -{ - struct ovl_fs *ofs = inode->i_sb->s_fs_info; - - return ofs->config.default_permissions; -} - void ovl_set_dir_cache(struct dentry *dentry, struct ovl_dir_cache *cache) { struct ovl_entry *oe = dentry->d_fsdata; @@ -235,7 +221,6 @@ void ovl_dentry_update(struct dentry *dentry, struct dentry *upperdentry) WARN_ON(!inode_is_locked(upperdentry->d_parent->d_inode)); WARN_ON(oe->__upperdentry); - BUG_ON(!upperdentry->d_inode); /* * Make sure upperdentry is consistent before making it visible to * ovl_upperdentry_dereference(). @@ -244,6 +229,16 @@ void ovl_dentry_update(struct dentry *dentry, struct dentry *upperdentry) oe->__upperdentry = upperdentry; } +void ovl_inode_update(struct inode *inode, struct inode *upperinode) +{ + WARN_ON(!upperinode); + WARN_ON(!inode_unhashed(inode)); + WRITE_ONCE(inode->i_private, + (unsigned long) upperinode | OVL_ISUPPER_MASK); + if (!S_ISDIR(upperinode->i_mode)) + __insert_inode_hash(inode, (unsigned long) upperinode); +} + void ovl_dentry_version_inc(struct dentry *dentry) { struct ovl_entry *oe = dentry->d_fsdata; @@ -304,7 +299,9 @@ static void ovl_dentry_release(struct dentry *dentry) } } -static struct dentry *ovl_d_real(struct dentry *dentry, struct inode *inode) +static struct dentry *ovl_d_real(struct dentry *dentry, + const struct inode *inode, + unsigned int open_flags) { struct dentry *real; @@ -314,6 +311,16 @@ static struct dentry *ovl_d_real(struct dentry *dentry, struct inode *inode) goto bug; } + if (d_is_negative(dentry)) + return dentry; + + if (open_flags) { + int err = ovl_open_maybe_copy_up(dentry, open_flags); + + if (err) + return ERR_PTR(err); + } + real = ovl_dentry_upper(dentry); if (real && (!inode || inode == d_inode(real))) return real; @@ -326,11 +333,9 @@ static struct dentry *ovl_d_real(struct dentry *dentry, struct inode *inode) return real; /* Handle recursion */ - if (real->d_flags & DCACHE_OP_REAL) - return real->d_op->d_real(real, inode); - + return d_real(real, inode, open_flags); bug: - WARN(1, "ovl_d_real(%pd4, %s:%lu\n): real dentry not found\n", dentry, + WARN(1, "ovl_d_real(%pd4, %s:%lu): real dentry not found\n", dentry, inode ? inode->i_sb->s_id : "NULL", inode ? inode->i_ino : 0); return dentry; } @@ -378,13 +383,11 @@ static int ovl_dentry_weak_revalidate(struct dentry *dentry, unsigned int flags) static const struct dentry_operations ovl_dentry_operations = { .d_release = ovl_dentry_release, - .d_select_inode = ovl_d_select_inode, .d_real = ovl_d_real, }; static const struct dentry_operations ovl_reval_dentry_operations = { .d_release = ovl_dentry_release, - .d_select_inode = ovl_d_select_inode, .d_real = ovl_d_real, .d_revalidate = ovl_dentry_revalidate, .d_weak_revalidate = ovl_dentry_weak_revalidate, @@ -404,7 +407,8 @@ static struct ovl_entry *ovl_alloc_entry(unsigned int numlower) static bool ovl_dentry_remote(struct dentry *dentry) { return dentry->d_flags & - (DCACHE_OP_REVALIDATE | DCACHE_OP_WEAK_REVALIDATE); + (DCACHE_OP_REVALIDATE | DCACHE_OP_WEAK_REVALIDATE | + DCACHE_OP_REAL); } static bool ovl_dentry_weird(struct dentry *dentry) @@ -415,12 +419,16 @@ static bool ovl_dentry_weird(struct dentry *dentry) DCACHE_OP_COMPARE); } -static inline struct dentry *ovl_lookup_real(struct dentry *dir, - struct qstr *name) +static inline struct dentry *ovl_lookup_real(struct super_block *ovl_sb, + struct dentry *dir, + const struct qstr *name) { + const struct cred *old_cred; struct dentry *dentry; - dentry = lookup_hash(name, dir); + old_cred = ovl_override_creds(ovl_sb); + dentry = lookup_one_len_unlocked(name->name, dir, name->len); + revert_creds(old_cred); if (IS_ERR(dentry)) { if (PTR_ERR(dentry) == -ENOENT) @@ -473,7 +481,7 @@ struct dentry *ovl_lookup(struct inode *dir, struct dentry *dentry, upperdir = ovl_upperdentry_dereference(poe); if (upperdir) { - this = ovl_lookup_real(upperdir, &dentry->d_name); + this = ovl_lookup_real(dentry->d_sb, upperdir, &dentry->d_name); err = PTR_ERR(this); if (IS_ERR(this)) goto out; @@ -506,7 +514,8 @@ struct dentry *ovl_lookup(struct inode *dir, struct dentry *dentry, bool opaque = false; struct path lowerpath = poe->lowerstack[i]; - this = ovl_lookup_real(lowerpath.dentry, &dentry->d_name); + this = ovl_lookup_real(dentry->d_sb, + lowerpath.dentry, &dentry->d_name); err = PTR_ERR(this); if (IS_ERR(this)) { /* @@ -561,12 +570,19 @@ struct dentry *ovl_lookup(struct inode *dir, struct dentry *dentry, if (upperdentry || ctr) { struct dentry *realdentry; + struct inode *realinode; realdentry = upperdentry ? upperdentry : stack[0].dentry; + realinode = d_inode(realdentry); err = -ENOMEM; - inode = ovl_new_inode(dentry->d_sb, realdentry->d_inode->i_mode, - oe); + if (upperdentry && !d_is_dir(upperdentry)) { + inode = ovl_get_inode(dentry->d_sb, realinode); + } else { + inode = ovl_new_inode(dentry->d_sb, realinode->i_mode); + if (inode) + ovl_inode_init(inode, realinode, !!upperdentry); + } if (!inode) goto out_free_oe; ovl_copyattr(realdentry->d_inode, inode); @@ -595,7 +611,7 @@ out: struct file *ovl_path_open(struct path *path, int flags) { - return dentry_open(path, flags, current_cred()); + return dentry_open(path, flags | O_NOATIME, current_cred()); } static void ovl_put_super(struct super_block *sb) @@ -678,6 +694,7 @@ static const struct super_operations ovl_super_operations = { .statfs = ovl_statfs, .show_options = ovl_show_options, .remount_fs = ovl_remount, + .drop_inode = generic_delete_inode, }; enum { @@ -950,11 +967,102 @@ static unsigned int ovl_split_lowerdirs(char *str) return ctr; } +static int ovl_posix_acl_xattr_set(const struct xattr_handler *handler, + struct dentry *dentry, struct inode *inode, + const char *name, const void *value, + size_t size, int flags) +{ + struct dentry *workdir = ovl_workdir(dentry); + struct inode *realinode = ovl_inode_real(inode, NULL); + struct posix_acl *acl = NULL; + int err; + + /* Check that everything is OK before copy-up */ + if (value) { + acl = posix_acl_from_xattr(&init_user_ns, value, size); + if (IS_ERR(acl)) + return PTR_ERR(acl); + } + err = -EOPNOTSUPP; + if (!IS_POSIXACL(d_inode(workdir))) + goto out_acl_release; + if (!realinode->i_op->set_acl) + goto out_acl_release; + if (handler->flags == ACL_TYPE_DEFAULT && !S_ISDIR(inode->i_mode)) { + err = acl ? -EACCES : 0; + goto out_acl_release; + } + err = -EPERM; + if (!inode_owner_or_capable(inode)) + goto out_acl_release; + + posix_acl_release(acl); + + return ovl_setxattr(dentry, inode, handler->name, value, size, flags); + +out_acl_release: + posix_acl_release(acl); + return err; +} + +static int ovl_other_xattr_set(const struct xattr_handler *handler, + struct dentry *dentry, struct inode *inode, + const char *name, const void *value, + size_t size, int flags) +{ + return ovl_setxattr(dentry, inode, name, value, size, flags); +} + +static int ovl_own_xattr_set(const struct xattr_handler *handler, + struct dentry *dentry, struct inode *inode, + const char *name, const void *value, + size_t size, int flags) +{ + return -EPERM; +} + +static const struct xattr_handler ovl_posix_acl_access_xattr_handler = { + .name = XATTR_NAME_POSIX_ACL_ACCESS, + .flags = ACL_TYPE_ACCESS, + .set = ovl_posix_acl_xattr_set, +}; + +static const struct xattr_handler ovl_posix_acl_default_xattr_handler = { + .name = XATTR_NAME_POSIX_ACL_DEFAULT, + .flags = ACL_TYPE_DEFAULT, + .set = ovl_posix_acl_xattr_set, +}; + +static const struct xattr_handler ovl_own_xattr_handler = { + .prefix = OVL_XATTR_PREFIX, + .set = ovl_own_xattr_set, +}; + +static const struct xattr_handler ovl_other_xattr_handler = { + .prefix = "", /* catch all */ + .set = ovl_other_xattr_set, +}; + +static const struct xattr_handler *ovl_xattr_handlers[] = { + &ovl_posix_acl_access_xattr_handler, + &ovl_posix_acl_default_xattr_handler, + &ovl_own_xattr_handler, + &ovl_other_xattr_handler, + NULL +}; + +static const struct xattr_handler *ovl_xattr_noacl_handlers[] = { + &ovl_own_xattr_handler, + &ovl_other_xattr_handler, + NULL, +}; + static int ovl_fill_super(struct super_block *sb, void *data, int silent) { struct path upperpath = { NULL, NULL }; struct path workpath = { NULL, NULL }; struct dentry *root_dentry; + struct inode *realinode; struct ovl_entry *oe; struct ovl_fs *ufs; struct path *stack = NULL; @@ -1061,6 +1169,10 @@ static int ovl_fill_super(struct super_block *sb, void *data, int silent) pr_err("overlayfs: failed to clone upperpath\n"); goto out_put_lowerpath; } + /* Don't inherit atime flags */ + ufs->upper_mnt->mnt_flags &= ~(MNT_NOATIME | MNT_NODIRATIME | MNT_RELATIME); + + sb->s_time_gran = ufs->upper_mnt->mnt_sb->s_time_gran; ufs->workdir = ovl_workdir_create(ufs->upper_mnt, workpath.dentry); err = PTR_ERR(ufs->workdir); @@ -1108,7 +1220,7 @@ static int ovl_fill_super(struct super_block *sb, void *data, int silent) * Make lower_mnt R/O. That way fchmod/fchown on lower file * will fail instead of modifying lower fs. */ - mnt->mnt_flags |= MNT_READONLY; + mnt->mnt_flags |= MNT_READONLY | MNT_NOATIME; ufs->lower_mnt[ufs->numlower] = mnt; ufs->numlower++; @@ -1132,7 +1244,7 @@ static int ovl_fill_super(struct super_block *sb, void *data, int silent) if (!oe) goto out_put_cred; - root_dentry = d_make_root(ovl_new_inode(sb, S_IFDIR, oe)); + root_dentry = d_make_root(ovl_new_inode(sb, S_IFDIR)); if (!root_dentry) goto out_free_oe; @@ -1151,13 +1263,19 @@ static int ovl_fill_super(struct super_block *sb, void *data, int silent) root_dentry->d_fsdata = oe; - ovl_copyattr(ovl_dentry_real(root_dentry)->d_inode, - root_dentry->d_inode); + realinode = d_inode(ovl_dentry_real(root_dentry)); + ovl_inode_init(d_inode(root_dentry), realinode, !!upperpath.dentry); + ovl_copyattr(realinode, d_inode(root_dentry)); sb->s_magic = OVERLAYFS_SUPER_MAGIC; sb->s_op = &ovl_super_operations; + if (IS_ENABLED(CONFIG_FS_POSIX_ACL)) + sb->s_xattr = ovl_xattr_handlers; + else + sb->s_xattr = ovl_xattr_noacl_handlers; sb->s_root = root_dentry; sb->s_fs_info = ufs; + sb->s_flags |= MS_POSIXACL; return 0; diff --git a/fs/pipe.c b/fs/pipe.c index 0d3f5165cb0b..4b32928f5426 100644 --- a/fs/pipe.c +++ b/fs/pipe.c @@ -21,6 +21,7 @@ #include <linux/audit.h> #include <linux/syscalls.h> #include <linux/fcntl.h> +#include <linux/memcontrol.h> #include <asm/uaccess.h> #include <asm/ioctls.h> @@ -137,6 +138,22 @@ static void anon_pipe_buf_release(struct pipe_inode_info *pipe, put_page(page); } +static int anon_pipe_buf_steal(struct pipe_inode_info *pipe, + struct pipe_buffer *buf) +{ + struct page *page = buf->page; + + if (page_count(page) == 1) { + if (memcg_kmem_enabled()) { + memcg_kmem_uncharge(page, 0); + __ClearPageKmemcg(page); + } + __SetPageLocked(page); + return 0; + } + return 1; +} + /** * generic_pipe_buf_steal - attempt to take ownership of a &pipe_buffer * @pipe: the pipe that the buffer belongs to @@ -219,7 +236,7 @@ static const struct pipe_buf_operations anon_pipe_buf_ops = { .can_merge = 1, .confirm = generic_pipe_buf_confirm, .release = anon_pipe_buf_release, - .steal = generic_pipe_buf_steal, + .steal = anon_pipe_buf_steal, .get = generic_pipe_buf_get, }; @@ -227,7 +244,7 @@ static const struct pipe_buf_operations packet_pipe_buf_ops = { .can_merge = 0, .confirm = generic_pipe_buf_confirm, .release = anon_pipe_buf_release, - .steal = generic_pipe_buf_steal, + .steal = anon_pipe_buf_steal, .get = generic_pipe_buf_get, }; @@ -405,7 +422,7 @@ pipe_write(struct kiocb *iocb, struct iov_iter *from) int copied; if (!page) { - page = alloc_page(GFP_HIGHUSER); + page = alloc_page(GFP_HIGHUSER | __GFP_ACCOUNT); if (unlikely(!page)) { ret = ret ? : -ENOMEM; break; @@ -611,7 +628,7 @@ struct pipe_inode_info *alloc_pipe_info(void) { struct pipe_inode_info *pipe; - pipe = kzalloc(sizeof(struct pipe_inode_info), GFP_KERNEL); + pipe = kzalloc(sizeof(struct pipe_inode_info), GFP_KERNEL_ACCOUNT); if (pipe) { unsigned long pipe_bufs = PIPE_DEF_BUFFERS; struct user_struct *user = get_current_user(); @@ -619,7 +636,9 @@ struct pipe_inode_info *alloc_pipe_info(void) if (!too_many_pipe_buffers_hard(user)) { if (too_many_pipe_buffers_soft(user)) pipe_bufs = 1; - pipe->bufs = kzalloc(sizeof(struct pipe_buffer) * pipe_bufs, GFP_KERNEL); + pipe->bufs = kcalloc(pipe_bufs, + sizeof(struct pipe_buffer), + GFP_KERNEL_ACCOUNT); } if (pipe->bufs) { @@ -1010,7 +1029,8 @@ static long pipe_set_size(struct pipe_inode_info *pipe, unsigned long nr_pages) if (nr_pages < pipe->nrbufs) return -EBUSY; - bufs = kcalloc(nr_pages, sizeof(*bufs), GFP_KERNEL | __GFP_NOWARN); + bufs = kcalloc(nr_pages, sizeof(*bufs), + GFP_KERNEL_ACCOUNT | __GFP_NOWARN); if (unlikely(!bufs)) return -ENOMEM; diff --git a/fs/proc/base.c b/fs/proc/base.c index a11eb7196ec8..31370da2ee7c 100644 --- a/fs/proc/base.c +++ b/fs/proc/base.c @@ -1024,23 +1024,107 @@ static ssize_t oom_adj_read(struct file *file, char __user *buf, size_t count, char buffer[PROC_NUMBUF]; int oom_adj = OOM_ADJUST_MIN; size_t len; - unsigned long flags; if (!task) return -ESRCH; - if (lock_task_sighand(task, &flags)) { - if (task->signal->oom_score_adj == OOM_SCORE_ADJ_MAX) - oom_adj = OOM_ADJUST_MAX; - else - oom_adj = (task->signal->oom_score_adj * -OOM_DISABLE) / - OOM_SCORE_ADJ_MAX; - unlock_task_sighand(task, &flags); - } + if (task->signal->oom_score_adj == OOM_SCORE_ADJ_MAX) + oom_adj = OOM_ADJUST_MAX; + else + oom_adj = (task->signal->oom_score_adj * -OOM_DISABLE) / + OOM_SCORE_ADJ_MAX; put_task_struct(task); len = snprintf(buffer, sizeof(buffer), "%d\n", oom_adj); return simple_read_from_buffer(buf, count, ppos, buffer, len); } +static int __set_oom_adj(struct file *file, int oom_adj, bool legacy) +{ + static DEFINE_MUTEX(oom_adj_mutex); + struct mm_struct *mm = NULL; + struct task_struct *task; + int err = 0; + + task = get_proc_task(file_inode(file)); + if (!task) + return -ESRCH; + + mutex_lock(&oom_adj_mutex); + if (legacy) { + if (oom_adj < task->signal->oom_score_adj && + !capable(CAP_SYS_RESOURCE)) { + err = -EACCES; + goto err_unlock; + } + /* + * /proc/pid/oom_adj is provided for legacy purposes, ask users to use + * /proc/pid/oom_score_adj instead. + */ + pr_warn_once("%s (%d): /proc/%d/oom_adj is deprecated, please use /proc/%d/oom_score_adj instead.\n", + current->comm, task_pid_nr(current), task_pid_nr(task), + task_pid_nr(task)); + } else { + if ((short)oom_adj < task->signal->oom_score_adj_min && + !capable(CAP_SYS_RESOURCE)) { + err = -EACCES; + goto err_unlock; + } + } + + /* + * Make sure we will check other processes sharing the mm if this is + * not vfrok which wants its own oom_score_adj. + * pin the mm so it doesn't go away and get reused after task_unlock + */ + if (!task->vfork_done) { + struct task_struct *p = find_lock_task_mm(task); + + if (p) { + if (atomic_read(&p->mm->mm_users) > 1) { + mm = p->mm; + atomic_inc(&mm->mm_count); + } + task_unlock(p); + } + } + + task->signal->oom_score_adj = oom_adj; + if (!legacy && has_capability_noaudit(current, CAP_SYS_RESOURCE)) + task->signal->oom_score_adj_min = (short)oom_adj; + trace_oom_score_adj_update(task); + + if (mm) { + struct task_struct *p; + + rcu_read_lock(); + for_each_process(p) { + if (same_thread_group(task, p)) + continue; + + /* do not touch kernel threads or the global init */ + if (p->flags & PF_KTHREAD || is_global_init(p)) + continue; + + task_lock(p); + if (!p->vfork_done && process_shares_mm(p, mm)) { + pr_info("updating oom_score_adj for %d (%s) from %d to %d because it shares mm with %d (%s). Report if this is unexpected.\n", + task_pid_nr(p), p->comm, + p->signal->oom_score_adj, oom_adj, + task_pid_nr(task), task->comm); + p->signal->oom_score_adj = oom_adj; + if (!legacy && has_capability_noaudit(current, CAP_SYS_RESOURCE)) + p->signal->oom_score_adj_min = (short)oom_adj; + } + task_unlock(p); + } + rcu_read_unlock(); + mmdrop(mm); + } +err_unlock: + mutex_unlock(&oom_adj_mutex); + put_task_struct(task); + return err; +} + /* * /proc/pid/oom_adj exists solely for backwards compatibility with previous * kernels. The effective policy is defined by oom_score_adj, which has a @@ -1054,10 +1138,8 @@ static ssize_t oom_adj_read(struct file *file, char __user *buf, size_t count, static ssize_t oom_adj_write(struct file *file, const char __user *buf, size_t count, loff_t *ppos) { - struct task_struct *task; char buffer[PROC_NUMBUF]; int oom_adj; - unsigned long flags; int err; memset(buffer, 0, sizeof(buffer)); @@ -1077,23 +1159,6 @@ static ssize_t oom_adj_write(struct file *file, const char __user *buf, goto out; } - task = get_proc_task(file_inode(file)); - if (!task) { - err = -ESRCH; - goto out; - } - - task_lock(task); - if (!task->mm) { - err = -EINVAL; - goto err_task_lock; - } - - if (!lock_task_sighand(task, &flags)) { - err = -ESRCH; - goto err_task_lock; - } - /* * Scale /proc/pid/oom_score_adj appropriately ensuring that a maximum * value is always attainable. @@ -1103,27 +1168,7 @@ static ssize_t oom_adj_write(struct file *file, const char __user *buf, else oom_adj = (oom_adj * OOM_SCORE_ADJ_MAX) / -OOM_DISABLE; - if (oom_adj < task->signal->oom_score_adj && - !capable(CAP_SYS_RESOURCE)) { - err = -EACCES; - goto err_sighand; - } - - /* - * /proc/pid/oom_adj is provided for legacy purposes, ask users to use - * /proc/pid/oom_score_adj instead. - */ - pr_warn_once("%s (%d): /proc/%d/oom_adj is deprecated, please use /proc/%d/oom_score_adj instead.\n", - current->comm, task_pid_nr(current), task_pid_nr(task), - task_pid_nr(task)); - - task->signal->oom_score_adj = oom_adj; - trace_oom_score_adj_update(task); -err_sighand: - unlock_task_sighand(task, &flags); -err_task_lock: - task_unlock(task); - put_task_struct(task); + err = __set_oom_adj(file, oom_adj, true); out: return err < 0 ? err : count; } @@ -1140,15 +1185,11 @@ static ssize_t oom_score_adj_read(struct file *file, char __user *buf, struct task_struct *task = get_proc_task(file_inode(file)); char buffer[PROC_NUMBUF]; short oom_score_adj = OOM_SCORE_ADJ_MIN; - unsigned long flags; size_t len; if (!task) return -ESRCH; - if (lock_task_sighand(task, &flags)) { - oom_score_adj = task->signal->oom_score_adj; - unlock_task_sighand(task, &flags); - } + oom_score_adj = task->signal->oom_score_adj; put_task_struct(task); len = snprintf(buffer, sizeof(buffer), "%hd\n", oom_score_adj); return simple_read_from_buffer(buf, count, ppos, buffer, len); @@ -1157,9 +1198,7 @@ static ssize_t oom_score_adj_read(struct file *file, char __user *buf, static ssize_t oom_score_adj_write(struct file *file, const char __user *buf, size_t count, loff_t *ppos) { - struct task_struct *task; char buffer[PROC_NUMBUF]; - unsigned long flags; int oom_score_adj; int err; @@ -1180,39 +1219,7 @@ static ssize_t oom_score_adj_write(struct file *file, const char __user *buf, goto out; } - task = get_proc_task(file_inode(file)); - if (!task) { - err = -ESRCH; - goto out; - } - - task_lock(task); - if (!task->mm) { - err = -EINVAL; - goto err_task_lock; - } - - if (!lock_task_sighand(task, &flags)) { - err = -ESRCH; - goto err_task_lock; - } - - if ((short)oom_score_adj < task->signal->oom_score_adj_min && - !capable(CAP_SYS_RESOURCE)) { - err = -EACCES; - goto err_sighand; - } - - task->signal->oom_score_adj = (short)oom_score_adj; - if (has_capability_noaudit(current, CAP_SYS_RESOURCE)) - task->signal->oom_score_adj_min = (short)oom_score_adj; - trace_oom_score_adj_update(task); - -err_sighand: - unlock_task_sighand(task, &flags); -err_task_lock: - task_unlock(task); - put_task_struct(task); + err = __set_oom_adj(file, oom_score_adj, false); out: return err < 0 ? err : count; } diff --git a/fs/proc/meminfo.c b/fs/proc/meminfo.c index 83720460c5bc..09e18fdf61e5 100644 --- a/fs/proc/meminfo.c +++ b/fs/proc/meminfo.c @@ -40,7 +40,7 @@ static int meminfo_proc_show(struct seq_file *m, void *v) si_swapinfo(&i); committed = percpu_counter_read_positive(&vm_committed_as); - cached = global_page_state(NR_FILE_PAGES) - + cached = global_node_page_state(NR_FILE_PAGES) - total_swapcache_pages() - i.bufferram; if (cached < 0) cached = 0; @@ -105,6 +105,8 @@ static int meminfo_proc_show(struct seq_file *m, void *v) #endif #ifdef CONFIG_TRANSPARENT_HUGEPAGE "AnonHugePages: %8lu kB\n" + "ShmemHugePages: %8lu kB\n" + "ShmemPmdMapped: %8lu kB\n" #endif #ifdef CONFIG_CMA "CmaTotal: %8lu kB\n" @@ -136,23 +138,23 @@ static int meminfo_proc_show(struct seq_file *m, void *v) #endif K(i.totalswap), K(i.freeswap), - K(global_page_state(NR_FILE_DIRTY)), - K(global_page_state(NR_WRITEBACK)), - K(global_page_state(NR_ANON_PAGES)), - K(global_page_state(NR_FILE_MAPPED)), + K(global_node_page_state(NR_FILE_DIRTY)), + K(global_node_page_state(NR_WRITEBACK)), + K(global_node_page_state(NR_ANON_MAPPED)), + K(global_node_page_state(NR_FILE_MAPPED)), K(i.sharedram), K(global_page_state(NR_SLAB_RECLAIMABLE) + global_page_state(NR_SLAB_UNRECLAIMABLE)), K(global_page_state(NR_SLAB_RECLAIMABLE)), K(global_page_state(NR_SLAB_UNRECLAIMABLE)), - global_page_state(NR_KERNEL_STACK) * THREAD_SIZE / 1024, + global_page_state(NR_KERNEL_STACK_KB), K(global_page_state(NR_PAGETABLE)), #ifdef CONFIG_QUICKLIST K(quicklist_total_size()), #endif - K(global_page_state(NR_UNSTABLE_NFS)), + K(global_node_page_state(NR_UNSTABLE_NFS)), K(global_page_state(NR_BOUNCE)), - K(global_page_state(NR_WRITEBACK_TEMP)), + K(global_node_page_state(NR_WRITEBACK_TEMP)), K(vm_commit_limit()), K(committed), (unsigned long)VMALLOC_TOTAL >> 10, @@ -162,8 +164,9 @@ static int meminfo_proc_show(struct seq_file *m, void *v) , atomic_long_read(&num_poisoned_pages) << (PAGE_SHIFT - 10) #endif #ifdef CONFIG_TRANSPARENT_HUGEPAGE - , K(global_page_state(NR_ANON_TRANSPARENT_HUGEPAGES) * - HPAGE_PMD_NR) + , K(global_node_page_state(NR_ANON_THPS) * HPAGE_PMD_NR) + , K(global_node_page_state(NR_SHMEM_THPS) * HPAGE_PMD_NR) + , K(global_node_page_state(NR_SHMEM_PMDMAPPED) * HPAGE_PMD_NR) #endif #ifdef CONFIG_CMA , K(totalcma_pages) diff --git a/fs/proc/proc_sysctl.c b/fs/proc/proc_sysctl.c index 5e57c3e46e1d..b59db94d2ff4 100644 --- a/fs/proc/proc_sysctl.c +++ b/fs/proc/proc_sysctl.c @@ -623,7 +623,7 @@ static bool proc_sys_fill_cache(struct file *file, qname.name = table->procname; qname.len = strlen(table->procname); - qname.hash = full_name_hash(qname.name, qname.len); + qname.hash = full_name_hash(dir, qname.name, qname.len); child = d_lookup(dir, &qname); if (!child) { diff --git a/fs/proc/task_mmu.c b/fs/proc/task_mmu.c index 4648c7f63ae2..187d84ef9de9 100644 --- a/fs/proc/task_mmu.c +++ b/fs/proc/task_mmu.c @@ -448,6 +448,7 @@ struct mem_size_stats { unsigned long referenced; unsigned long anonymous; unsigned long anonymous_thp; + unsigned long shmem_thp; unsigned long swap; unsigned long shared_hugetlb; unsigned long private_hugetlb; @@ -576,7 +577,12 @@ static void smaps_pmd_entry(pmd_t *pmd, unsigned long addr, page = follow_trans_huge_pmd(vma, addr, pmd, FOLL_DUMP); if (IS_ERR_OR_NULL(page)) return; - mss->anonymous_thp += HPAGE_PMD_SIZE; + if (PageAnon(page)) + mss->anonymous_thp += HPAGE_PMD_SIZE; + else if (PageSwapBacked(page)) + mss->shmem_thp += HPAGE_PMD_SIZE; + else + VM_BUG_ON_PAGE(1, page); smaps_account(mss, page, true, pmd_young(*pmd), pmd_dirty(*pmd)); } #else @@ -770,6 +776,7 @@ static int show_smap(struct seq_file *m, void *v, int is_pid) "Referenced: %8lu kB\n" "Anonymous: %8lu kB\n" "AnonHugePages: %8lu kB\n" + "ShmemPmdMapped: %8lu kB\n" "Shared_Hugetlb: %8lu kB\n" "Private_Hugetlb: %7lu kB\n" "Swap: %8lu kB\n" @@ -787,6 +794,7 @@ static int show_smap(struct seq_file *m, void *v, int is_pid) mss.referenced >> 10, mss.anonymous >> 10, mss.anonymous_thp >> 10, + mss.shmem_thp >> 10, mss.shared_hugetlb >> 10, mss.private_hugetlb >> 10, mss.swap >> 10, diff --git a/fs/pstore/Kconfig b/fs/pstore/Kconfig index 360ae43f590c..be40813eff52 100644 --- a/fs/pstore/Kconfig +++ b/fs/pstore/Kconfig @@ -1,8 +1,6 @@ config PSTORE tristate "Persistent store support" default n - select ZLIB_DEFLATE - select ZLIB_INFLATE help This option enables generic access to platform level persistent storage via "pstore" filesystem that can @@ -14,6 +12,35 @@ config PSTORE If you don't have a platform persistent store driver, say N. +choice + prompt "Choose compression algorithm" + depends on PSTORE + default PSTORE_ZLIB_COMPRESS + help + This option chooses compression algorithm. + +config PSTORE_ZLIB_COMPRESS + bool "ZLIB" + select ZLIB_DEFLATE + select ZLIB_INFLATE + help + This option enables ZLIB compression algorithm support. + +config PSTORE_LZO_COMPRESS + bool "LZO" + select LZO_COMPRESS + select LZO_DECOMPRESS + help + This option enables LZO compression algorithm support. + +config PSTORE_LZ4_COMPRESS + bool "LZ4" + select LZ4_COMPRESS + select LZ4_DECOMPRESS + help + This option enables LZ4 compression algorithm support. +endchoice + config PSTORE_CONSOLE bool "Log kernel console messages" depends on PSTORE diff --git a/fs/pstore/inode.c b/fs/pstore/inode.c index 45d6110744cb..ec9ddef5ae75 100644 --- a/fs/pstore/inode.c +++ b/fs/pstore/inode.c @@ -178,7 +178,6 @@ static loff_t pstore_file_llseek(struct file *file, loff_t off, int whence) } static const struct file_operations pstore_file_operations = { - .owner = THIS_MODULE, .open = pstore_file_open, .read = pstore_file_read, .llseek = pstore_file_llseek, diff --git a/fs/pstore/platform.c b/fs/pstore/platform.c index 588461bb2dd4..16ecca5b72d8 100644 --- a/fs/pstore/platform.c +++ b/fs/pstore/platform.c @@ -28,7 +28,15 @@ #include <linux/console.h> #include <linux/module.h> #include <linux/pstore.h> +#ifdef CONFIG_PSTORE_ZLIB_COMPRESS #include <linux/zlib.h> +#endif +#ifdef CONFIG_PSTORE_LZO_COMPRESS +#include <linux/lzo.h> +#endif +#ifdef CONFIG_PSTORE_LZ4_COMPRESS +#include <linux/lz4.h> +#endif #include <linux/string.h> #include <linux/timer.h> #include <linux/slab.h> @@ -69,10 +77,23 @@ struct pstore_info *psinfo; static char *backend; /* Compression parameters */ +#ifdef CONFIG_PSTORE_ZLIB_COMPRESS #define COMPR_LEVEL 6 #define WINDOW_BITS 12 #define MEM_LEVEL 4 static struct z_stream_s stream; +#else +static unsigned char *workspace; +#endif + +struct pstore_zbackend { + int (*compress)(const void *in, void *out, size_t inlen, size_t outlen); + int (*decompress)(void *in, void *out, size_t inlen, size_t outlen); + void (*allocate)(void); + void (*free)(void); + + const char *name; +}; static char *big_oops_buf; static size_t big_oops_buf_sz; @@ -129,9 +150,9 @@ bool pstore_cannot_block_path(enum kmsg_dump_reason reason) } EXPORT_SYMBOL_GPL(pstore_cannot_block_path); +#ifdef CONFIG_PSTORE_ZLIB_COMPRESS /* Derived from logfs_compress() */ -static int pstore_compress(const void *in, void *out, size_t inlen, - size_t outlen) +static int compress_zlib(const void *in, void *out, size_t inlen, size_t outlen) { int err, ret; @@ -165,7 +186,7 @@ error: } /* Derived from logfs_uncompress */ -static int pstore_decompress(void *in, void *out, size_t inlen, size_t outlen) +static int decompress_zlib(void *in, void *out, size_t inlen, size_t outlen) { int err, ret; @@ -194,7 +215,7 @@ error: return ret; } -static void allocate_buf_for_compression(void) +static void allocate_zlib(void) { size_t size; size_t cmpr; @@ -237,12 +258,190 @@ static void allocate_buf_for_compression(void) } -static void free_buf_for_compression(void) +static void free_zlib(void) { kfree(stream.workspace); stream.workspace = NULL; kfree(big_oops_buf); big_oops_buf = NULL; + big_oops_buf_sz = 0; +} + +static struct pstore_zbackend backend_zlib = { + .compress = compress_zlib, + .decompress = decompress_zlib, + .allocate = allocate_zlib, + .free = free_zlib, + .name = "zlib", +}; +#endif + +#ifdef CONFIG_PSTORE_LZO_COMPRESS +static int compress_lzo(const void *in, void *out, size_t inlen, size_t outlen) +{ + int ret; + + ret = lzo1x_1_compress(in, inlen, out, &outlen, workspace); + if (ret != LZO_E_OK) { + pr_err("lzo_compress error, ret = %d!\n", ret); + return -EIO; + } + + return outlen; +} + +static int decompress_lzo(void *in, void *out, size_t inlen, size_t outlen) +{ + int ret; + + ret = lzo1x_decompress_safe(in, inlen, out, &outlen); + if (ret != LZO_E_OK) { + pr_err("lzo_decompress error, ret = %d!\n", ret); + return -EIO; + } + + return outlen; +} + +static void allocate_lzo(void) +{ + big_oops_buf_sz = lzo1x_worst_compress(psinfo->bufsize); + big_oops_buf = kmalloc(big_oops_buf_sz, GFP_KERNEL); + if (big_oops_buf) { + workspace = kmalloc(LZO1X_MEM_COMPRESS, GFP_KERNEL); + if (!workspace) { + pr_err("No memory for compression workspace; skipping compression\n"); + kfree(big_oops_buf); + big_oops_buf = NULL; + } + } else { + pr_err("No memory for uncompressed data; skipping compression\n"); + workspace = NULL; + } +} + +static void free_lzo(void) +{ + kfree(workspace); + kfree(big_oops_buf); + big_oops_buf = NULL; + big_oops_buf_sz = 0; +} + +static struct pstore_zbackend backend_lzo = { + .compress = compress_lzo, + .decompress = decompress_lzo, + .allocate = allocate_lzo, + .free = free_lzo, + .name = "lzo", +}; +#endif + +#ifdef CONFIG_PSTORE_LZ4_COMPRESS +static int compress_lz4(const void *in, void *out, size_t inlen, size_t outlen) +{ + int ret; + + ret = lz4_compress(in, inlen, out, &outlen, workspace); + if (ret) { + pr_err("lz4_compress error, ret = %d!\n", ret); + return -EIO; + } + + return outlen; +} + +static int decompress_lz4(void *in, void *out, size_t inlen, size_t outlen) +{ + int ret; + + ret = lz4_decompress_unknownoutputsize(in, inlen, out, &outlen); + if (ret) { + pr_err("lz4_decompress error, ret = %d!\n", ret); + return -EIO; + } + + return outlen; +} + +static void allocate_lz4(void) +{ + big_oops_buf_sz = lz4_compressbound(psinfo->bufsize); + big_oops_buf = kmalloc(big_oops_buf_sz, GFP_KERNEL); + if (big_oops_buf) { + workspace = kmalloc(LZ4_MEM_COMPRESS, GFP_KERNEL); + if (!workspace) { + pr_err("No memory for compression workspace; skipping compression\n"); + kfree(big_oops_buf); + big_oops_buf = NULL; + } + } else { + pr_err("No memory for uncompressed data; skipping compression\n"); + workspace = NULL; + } +} + +static void free_lz4(void) +{ + kfree(workspace); + kfree(big_oops_buf); + big_oops_buf = NULL; + big_oops_buf_sz = 0; +} + +static struct pstore_zbackend backend_lz4 = { + .compress = compress_lz4, + .decompress = decompress_lz4, + .allocate = allocate_lz4, + .free = free_lz4, + .name = "lz4", +}; +#endif + +static struct pstore_zbackend *zbackend = +#if defined(CONFIG_PSTORE_ZLIB_COMPRESS) + &backend_zlib; +#elif defined(CONFIG_PSTORE_LZO_COMPRESS) + &backend_lzo; +#elif defined(CONFIG_PSTORE_LZ4_COMPRESS) + &backend_lz4; +#else + NULL; +#endif + +static int pstore_compress(const void *in, void *out, + size_t inlen, size_t outlen) +{ + if (zbackend) + return zbackend->compress(in, out, inlen, outlen); + else + return -EIO; +} + +static int pstore_decompress(void *in, void *out, size_t inlen, size_t outlen) +{ + if (zbackend) + return zbackend->decompress(in, out, inlen, outlen); + else + return -EIO; +} + +static void allocate_buf_for_compression(void) +{ + if (zbackend) { + pr_info("using %s compression\n", zbackend->name); + zbackend->allocate(); + } else { + pr_err("allocate compression buffer error!\n"); + } +} + +static void free_buf_for_compression(void) +{ + if (zbackend) + zbackend->free(); + else + pr_err("free compression buffer error!\n"); } /* @@ -284,7 +483,7 @@ static void pstore_dump(struct kmsg_dumper *dumper, u64 id; unsigned int part = 1; unsigned long flags = 0; - int is_locked = 0; + int is_locked; int ret; why = get_reason_str(reason); @@ -295,8 +494,10 @@ static void pstore_dump(struct kmsg_dumper *dumper, pr_err("pstore dump routine blocked in %s path, may corrupt error record\n" , in_nmi() ? "NMI" : why); } - } else + } else { spin_lock_irqsave(&psinfo->buf_lock, flags); + is_locked = 1; + } oopscount++; while (total < kmsg_bytes) { char *dst; @@ -304,19 +505,25 @@ static void pstore_dump(struct kmsg_dumper *dumper, int hsize; int zipped_len = -1; size_t len; - bool compressed; + bool compressed = false; size_t total_len; if (big_oops_buf && is_locked) { dst = big_oops_buf; - hsize = sprintf(dst, "%s#%d Part%u\n", why, - oopscount, part); - size = big_oops_buf_sz - hsize; + size = big_oops_buf_sz; + } else { + dst = psinfo->buf; + size = psinfo->bufsize; + } - if (!kmsg_dump_get_buffer(dumper, true, dst + hsize, - size, &len)) - break; + hsize = sprintf(dst, "%s#%d Part%u\n", why, oopscount, part); + size -= hsize; + + if (!kmsg_dump_get_buffer(dumper, true, dst + hsize, + size, &len)) + break; + if (big_oops_buf && is_locked) { zipped_len = pstore_compress(dst, psinfo->buf, hsize + len, psinfo->bufsize); @@ -324,21 +531,9 @@ static void pstore_dump(struct kmsg_dumper *dumper, compressed = true; total_len = zipped_len; } else { - compressed = false; total_len = copy_kmsg_to_buffer(hsize, len); } } else { - dst = psinfo->buf; - hsize = sprintf(dst, "%s#%d Part%u\n", why, oopscount, - part); - size = psinfo->bufsize - hsize; - dst += hsize; - - if (!kmsg_dump_get_buffer(dumper, true, dst, - size, &len)) - break; - - compressed = false; total_len = hsize + len; } @@ -350,10 +545,7 @@ static void pstore_dump(struct kmsg_dumper *dumper, total += total_len; part++; } - if (pstore_cannot_block_path(reason)) { - if (is_locked) - spin_unlock_irqrestore(&psinfo->buf_lock, flags); - } else + if (is_locked) spin_unlock_irqrestore(&psinfo->buf_lock, flags); } @@ -497,9 +689,11 @@ EXPORT_SYMBOL_GPL(pstore_register); void pstore_unregister(struct pstore_info *psi) { - pstore_unregister_pmsg(); - pstore_unregister_ftrace(); - pstore_unregister_console(); + if ((psi->flags & PSTORE_FLAGS_FRAGILE) == 0) { + pstore_unregister_pmsg(); + pstore_unregister_ftrace(); + pstore_unregister_console(); + } pstore_unregister_kmsg(); free_buf_for_compression(); @@ -527,6 +721,7 @@ void pstore_get_records(int quiet) int failed = 0, rc; bool compressed; int unzipped_len = -1; + ssize_t ecc_notice_size = 0; if (!psi) return; @@ -536,7 +731,7 @@ void pstore_get_records(int quiet) goto out; while ((size = psi->read(&id, &type, &count, &time, &buf, &compressed, - psi)) > 0) { + &ecc_notice_size, psi)) > 0) { if (compressed && (type == PSTORE_TYPE_DMESG)) { if (big_oops_buf) unzipped_len = pstore_decompress(buf, @@ -544,6 +739,9 @@ void pstore_get_records(int quiet) big_oops_buf_sz); if (unzipped_len > 0) { + if (ecc_notice_size) + memcpy(big_oops_buf + unzipped_len, + buf + size, ecc_notice_size); kfree(buf); buf = big_oops_buf; size = unzipped_len; @@ -555,7 +753,8 @@ void pstore_get_records(int quiet) } } rc = pstore_mkfile(type, psi->name, id, count, buf, - compressed, (size_t)size, time, psi); + compressed, size + ecc_notice_size, + time, psi); if (unzipped_len < 0) { /* Free buffer other than big oops */ kfree(buf); diff --git a/fs/pstore/ram.c b/fs/pstore/ram.c index bd9812e83461..47516a794011 100644 --- a/fs/pstore/ram.c +++ b/fs/pstore/ram.c @@ -34,6 +34,8 @@ #include <linux/slab.h> #include <linux/compiler.h> #include <linux/pstore_ram.h> +#include <linux/of.h> +#include <linux/of_address.h> #define RAMOOPS_KERNMSG_HDR "====" #define MIN_MEM_SIZE 4096UL @@ -181,10 +183,10 @@ static bool prz_ok(struct persistent_ram_zone *prz) static ssize_t ramoops_pstore_read(u64 *id, enum pstore_type_id *type, int *count, struct timespec *time, char **buf, bool *compressed, + ssize_t *ecc_notice_size, struct pstore_info *psi) { ssize_t size; - ssize_t ecc_notice_size; struct ramoops_context *cxt = psi->data; struct persistent_ram_zone *prz = NULL; int header_length = 0; @@ -229,16 +231,16 @@ static ssize_t ramoops_pstore_read(u64 *id, enum pstore_type_id *type, size = persistent_ram_old_size(prz) - header_length; /* ECC correction notice */ - ecc_notice_size = persistent_ram_ecc_string(prz, NULL, 0); + *ecc_notice_size = persistent_ram_ecc_string(prz, NULL, 0); - *buf = kmalloc(size + ecc_notice_size + 1, GFP_KERNEL); + *buf = kmalloc(size + *ecc_notice_size + 1, GFP_KERNEL); if (*buf == NULL) return -ENOMEM; memcpy(*buf, (char *)persistent_ram_old(prz) + header_length, size); - persistent_ram_ecc_string(prz, *buf + size, ecc_notice_size + 1); + persistent_ram_ecc_string(prz, *buf + size, *ecc_notice_size + 1); - return size + ecc_notice_size; + return size; } static size_t ramoops_write_kmsg_hdr(struct persistent_ram_zone *prz, @@ -458,15 +460,98 @@ static int ramoops_init_prz(struct device *dev, struct ramoops_context *cxt, return 0; } +static int ramoops_parse_dt_size(struct platform_device *pdev, + const char *propname, u32 *value) +{ + u32 val32 = 0; + int ret; + + ret = of_property_read_u32(pdev->dev.of_node, propname, &val32); + if (ret < 0 && ret != -EINVAL) { + dev_err(&pdev->dev, "failed to parse property %s: %d\n", + propname, ret); + return ret; + } + + if (val32 > INT_MAX) { + dev_err(&pdev->dev, "%s %u > INT_MAX\n", propname, val32); + return -EOVERFLOW; + } + + *value = val32; + return 0; +} + +static int ramoops_parse_dt(struct platform_device *pdev, + struct ramoops_platform_data *pdata) +{ + struct device_node *of_node = pdev->dev.of_node; + struct device_node *mem_region; + struct resource res; + u32 value; + int ret; + + dev_dbg(&pdev->dev, "using Device Tree\n"); + + mem_region = of_parse_phandle(of_node, "memory-region", 0); + if (!mem_region) { + dev_err(&pdev->dev, "no memory-region phandle\n"); + return -ENODEV; + } + + ret = of_address_to_resource(mem_region, 0, &res); + of_node_put(mem_region); + if (ret) { + dev_err(&pdev->dev, + "failed to translate memory-region to resource: %d\n", + ret); + return ret; + } + + pdata->mem_size = resource_size(&res); + pdata->mem_address = res.start; + pdata->mem_type = of_property_read_bool(of_node, "unbuffered"); + pdata->dump_oops = !of_property_read_bool(of_node, "no-dump-oops"); + +#define parse_size(name, field) { \ + ret = ramoops_parse_dt_size(pdev, name, &value); \ + if (ret < 0) \ + return ret; \ + field = value; \ + } + + parse_size("record-size", pdata->record_size); + parse_size("console-size", pdata->console_size); + parse_size("ftrace-size", pdata->ftrace_size); + parse_size("pmsg-size", pdata->pmsg_size); + parse_size("ecc-size", pdata->ecc_info.ecc_size); + +#undef parse_size + + return 0; +} + static int ramoops_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; - struct ramoops_platform_data *pdata = pdev->dev.platform_data; + struct ramoops_platform_data *pdata = dev->platform_data; struct ramoops_context *cxt = &oops_cxt; size_t dump_mem_sz; phys_addr_t paddr; int err = -EINVAL; + if (dev_of_node(dev) && !pdata) { + pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL); + if (!pdata) { + err = -ENOMEM; + goto fail_out; + } + + err = ramoops_parse_dt(pdev, pdata); + if (err < 0) + goto fail_out; + } + /* Only a single ramoops area allowed at a time, so fail extra * probes. */ @@ -596,11 +681,17 @@ static int ramoops_remove(struct platform_device *pdev) return 0; } +static const struct of_device_id dt_match[] = { + { .compatible = "ramoops" }, + {} +}; + static struct platform_driver ramoops_driver = { .probe = ramoops_probe, .remove = ramoops_remove, .driver = { - .name = "ramoops", + .name = "ramoops", + .of_match_table = dt_match, }, }; diff --git a/fs/quota/dquot.c b/fs/quota/dquot.c index ff21980d0119..b1322dd9d136 100644 --- a/fs/quota/dquot.c +++ b/fs/quota/dquot.c @@ -1133,7 +1133,7 @@ static void dquot_decr_inodes(struct dquot *dquot, qsize_t number) else dquot->dq_dqb.dqb_curinodes = 0; if (dquot->dq_dqb.dqb_curinodes <= dquot->dq_dqb.dqb_isoftlimit) - dquot->dq_dqb.dqb_itime = (time_t) 0; + dquot->dq_dqb.dqb_itime = (time64_t) 0; clear_bit(DQ_INODES_B, &dquot->dq_flags); } @@ -1145,7 +1145,7 @@ static void dquot_decr_space(struct dquot *dquot, qsize_t number) else dquot->dq_dqb.dqb_curspace = 0; if (dquot->dq_dqb.dqb_curspace <= dquot->dq_dqb.dqb_bsoftlimit) - dquot->dq_dqb.dqb_btime = (time_t) 0; + dquot->dq_dqb.dqb_btime = (time64_t) 0; clear_bit(DQ_BLKS_B, &dquot->dq_flags); } @@ -1292,7 +1292,7 @@ static int check_idq(struct dquot *dquot, qsize_t inodes, if (dquot->dq_dqb.dqb_isoftlimit && newinodes > dquot->dq_dqb.dqb_isoftlimit && dquot->dq_dqb.dqb_itime && - get_seconds() >= dquot->dq_dqb.dqb_itime && + ktime_get_real_seconds() >= dquot->dq_dqb.dqb_itime && !ignore_hardlimit(dquot)) { prepare_warning(warn, dquot, QUOTA_NL_ISOFTLONGWARN); return -EDQUOT; @@ -1302,7 +1302,7 @@ static int check_idq(struct dquot *dquot, qsize_t inodes, newinodes > dquot->dq_dqb.dqb_isoftlimit && dquot->dq_dqb.dqb_itime == 0) { prepare_warning(warn, dquot, QUOTA_NL_ISOFTWARN); - dquot->dq_dqb.dqb_itime = get_seconds() + + dquot->dq_dqb.dqb_itime = ktime_get_real_seconds() + sb_dqopt(dquot->dq_sb)->info[dquot->dq_id.type].dqi_igrace; } @@ -1334,7 +1334,7 @@ static int check_bdq(struct dquot *dquot, qsize_t space, int prealloc, if (dquot->dq_dqb.dqb_bsoftlimit && tspace > dquot->dq_dqb.dqb_bsoftlimit && dquot->dq_dqb.dqb_btime && - get_seconds() >= dquot->dq_dqb.dqb_btime && + ktime_get_real_seconds() >= dquot->dq_dqb.dqb_btime && !ignore_hardlimit(dquot)) { if (!prealloc) prepare_warning(warn, dquot, QUOTA_NL_BSOFTLONGWARN); @@ -1346,7 +1346,7 @@ static int check_bdq(struct dquot *dquot, qsize_t space, int prealloc, dquot->dq_dqb.dqb_btime == 0) { if (!prealloc) { prepare_warning(warn, dquot, QUOTA_NL_BSOFTWARN); - dquot->dq_dqb.dqb_btime = get_seconds() + + dquot->dq_dqb.dqb_btime = ktime_get_real_seconds() + sb_dqopt(sb)->info[dquot->dq_id.type].dqi_bgrace; } else @@ -2695,7 +2695,7 @@ static int do_set_dqblk(struct dquot *dquot, struct qc_dqblk *di) clear_bit(DQ_BLKS_B, &dquot->dq_flags); } else if (!(di->d_fieldmask & QC_SPC_TIMER)) /* Set grace only if user hasn't provided his own... */ - dm->dqb_btime = get_seconds() + dqi->dqi_bgrace; + dm->dqb_btime = ktime_get_real_seconds() + dqi->dqi_bgrace; } if (check_ilim) { if (!dm->dqb_isoftlimit || @@ -2704,7 +2704,7 @@ static int do_set_dqblk(struct dquot *dquot, struct qc_dqblk *di) clear_bit(DQ_INODES_B, &dquot->dq_flags); } else if (!(di->d_fieldmask & QC_INO_TIMER)) /* Set grace only if user hasn't provided his own... */ - dm->dqb_itime = get_seconds() + dqi->dqi_igrace; + dm->dqb_itime = ktime_get_real_seconds() + dqi->dqi_igrace; } if (dm->dqb_bhardlimit || dm->dqb_bsoftlimit || dm->dqb_ihardlimit || dm->dqb_isoftlimit) diff --git a/fs/super.c b/fs/super.c index d78b9847e6cb..5806ffd45563 100644 --- a/fs/super.c +++ b/fs/super.c @@ -206,6 +206,8 @@ static struct super_block *alloc_super(struct file_system_type *type, int flags) mutex_init(&s->s_sync_lock); INIT_LIST_HEAD(&s->s_inodes); spin_lock_init(&s->s_inode_list_lock); + INIT_LIST_HEAD(&s->s_inodes_wb); + spin_lock_init(&s->s_inode_wblist_lock); if (list_lru_init_memcg(&s->s_dentry_lru)) goto fail; diff --git a/fs/sysv/namei.c b/fs/sysv/namei.c index 90b60c03b588..a42de45ce40d 100644 --- a/fs/sysv/namei.c +++ b/fs/sysv/namei.c @@ -33,7 +33,7 @@ static int sysv_hash(const struct dentry *dentry, struct qstr *qstr) function. */ if (qstr->len > SYSV_NAMELEN) { qstr->len = SYSV_NAMELEN; - qstr->hash = full_name_hash(qstr->name, qstr->len); + qstr->hash = full_name_hash(dentry, qstr->name, qstr->len); } return 0; } diff --git a/fs/tracefs/inode.c b/fs/tracefs/inode.c index 4a0e48f92104..ad40b64c5e2f 100644 --- a/fs/tracefs/inode.c +++ b/fs/tracefs/inode.c @@ -541,9 +541,6 @@ void tracefs_remove(struct dentry *dentry) return; parent = dentry->d_parent; - if (!parent || !parent->d_inode) - return; - inode_lock(parent->d_inode); ret = __tracefs_remove(dentry, parent); inode_unlock(parent->d_inode); @@ -566,10 +563,6 @@ void tracefs_remove_recursive(struct dentry *dentry) if (IS_ERR_OR_NULL(dentry)) return; - parent = dentry->d_parent; - if (!parent || !parent->d_inode) - return; - parent = dentry; down: inode_lock(parent->d_inode); diff --git a/fs/ufs/dir.c b/fs/ufs/dir.c index 57dcceda17d6..fa3bda1a860f 100644 --- a/fs/ufs/dir.c +++ b/fs/ufs/dir.c @@ -279,12 +279,6 @@ struct ufs_dir_entry *ufs_find_entry(struct inode *dir, const struct qstr *qstr, de = (struct ufs_dir_entry *) kaddr; kaddr += ufs_last_byte(dir, n) - reclen; while ((char *) de <= kaddr) { - if (de->d_reclen == 0) { - ufs_error(dir->i_sb, __func__, - "zero-length directory entry"); - ufs_put_page(page); - goto out; - } if (ufs_match(sb, namelen, name, de)) goto found; de = ufs_next_entry(sb, de); @@ -414,11 +408,8 @@ ufs_validate_entry(struct super_block *sb, char *base, { struct ufs_dir_entry *de = (struct ufs_dir_entry*)(base + offset); struct ufs_dir_entry *p = (struct ufs_dir_entry*)(base + (offset&mask)); - while ((char*)p < (char*)de) { - if (p->d_reclen == 0) - break; + while ((char*)p < (char*)de) p = ufs_next_entry(sb, p); - } return (char *)p - base; } @@ -469,12 +460,6 @@ ufs_readdir(struct file *file, struct dir_context *ctx) de = (struct ufs_dir_entry *)(kaddr+offset); limit = kaddr + ufs_last_byte(inode, n) - UFS_DIR_REC_LEN(1); for ( ;(char*)de <= limit; de = ufs_next_entry(sb, de)) { - if (de->d_reclen == 0) { - ufs_error(sb, __func__, - "zero-length directory entry"); - ufs_put_page(page); - return -EIO; - } if (de->d_ino) { unsigned char d_type = DT_UNKNOWN; diff --git a/fs/userfaultfd.c b/fs/userfaultfd.c index 2d97952e341a..85959d8324df 100644 --- a/fs/userfaultfd.c +++ b/fs/userfaultfd.c @@ -257,10 +257,9 @@ out: * fatal_signal_pending()s, and the mmap_sem must be released before * returning it. */ -int handle_userfault(struct vm_area_struct *vma, unsigned long address, - unsigned int flags, unsigned long reason) +int handle_userfault(struct fault_env *fe, unsigned long reason) { - struct mm_struct *mm = vma->vm_mm; + struct mm_struct *mm = fe->vma->vm_mm; struct userfaultfd_ctx *ctx; struct userfaultfd_wait_queue uwq; int ret; @@ -269,7 +268,7 @@ int handle_userfault(struct vm_area_struct *vma, unsigned long address, BUG_ON(!rwsem_is_locked(&mm->mmap_sem)); ret = VM_FAULT_SIGBUS; - ctx = vma->vm_userfaultfd_ctx.ctx; + ctx = fe->vma->vm_userfaultfd_ctx.ctx; if (!ctx) goto out; @@ -302,17 +301,17 @@ int handle_userfault(struct vm_area_struct *vma, unsigned long address, * without first stopping userland access to the memory. For * VM_UFFD_MISSING userfaults this is enough for now. */ - if (unlikely(!(flags & FAULT_FLAG_ALLOW_RETRY))) { + if (unlikely(!(fe->flags & FAULT_FLAG_ALLOW_RETRY))) { /* * Validate the invariant that nowait must allow retry * to be sure not to return SIGBUS erroneously on * nowait invocations. */ - BUG_ON(flags & FAULT_FLAG_RETRY_NOWAIT); + BUG_ON(fe->flags & FAULT_FLAG_RETRY_NOWAIT); #ifdef CONFIG_DEBUG_VM if (printk_ratelimit()) { printk(KERN_WARNING - "FAULT_FLAG_ALLOW_RETRY missing %x\n", flags); + "FAULT_FLAG_ALLOW_RETRY missing %x\n", fe->flags); dump_stack(); } #endif @@ -324,7 +323,7 @@ int handle_userfault(struct vm_area_struct *vma, unsigned long address, * and wait. */ ret = VM_FAULT_RETRY; - if (flags & FAULT_FLAG_RETRY_NOWAIT) + if (fe->flags & FAULT_FLAG_RETRY_NOWAIT) goto out; /* take the reference before dropping the mmap_sem */ @@ -332,10 +331,11 @@ int handle_userfault(struct vm_area_struct *vma, unsigned long address, init_waitqueue_func_entry(&uwq.wq, userfaultfd_wake_function); uwq.wq.private = current; - uwq.msg = userfault_msg(address, flags, reason); + uwq.msg = userfault_msg(fe->address, fe->flags, reason); uwq.ctx = ctx; - return_to_userland = (flags & (FAULT_FLAG_USER|FAULT_FLAG_KILLABLE)) == + return_to_userland = + (fe->flags & (FAULT_FLAG_USER|FAULT_FLAG_KILLABLE)) == (FAULT_FLAG_USER|FAULT_FLAG_KILLABLE); spin_lock(&ctx->fault_pending_wqh.lock); @@ -353,7 +353,7 @@ int handle_userfault(struct vm_area_struct *vma, unsigned long address, TASK_KILLABLE); spin_unlock(&ctx->fault_pending_wqh.lock); - must_wait = userfaultfd_must_wait(ctx, address, flags, reason); + must_wait = userfaultfd_must_wait(ctx, fe->address, fe->flags, reason); up_read(&mm->mmap_sem); if (likely(must_wait && !ACCESS_ONCE(ctx->released) && diff --git a/fs/xfs/Kconfig b/fs/xfs/Kconfig index 5d47b4df61ea..35faf128f36d 100644 --- a/fs/xfs/Kconfig +++ b/fs/xfs/Kconfig @@ -4,6 +4,7 @@ config XFS_FS depends on (64BIT || LBDAF) select EXPORTFS select LIBCRC32C + select FS_IOMAP help XFS is a high performance journaling filesystem which originated on the SGI IRIX platform. It is completely multi-threaded, can diff --git a/fs/xfs/libxfs/xfs_alloc.c b/fs/xfs/libxfs/xfs_alloc.c index a708e38b494c..88c26b827a2d 100644 --- a/fs/xfs/libxfs/xfs_alloc.c +++ b/fs/xfs/libxfs/xfs_alloc.c @@ -84,7 +84,7 @@ xfs_alloc_lookup_ge( * Lookup the first record less than or equal to [bno, len] * in the btree given by cur. */ -int /* error */ +static int /* error */ xfs_alloc_lookup_le( struct xfs_btree_cur *cur, /* btree cursor */ xfs_agblock_t bno, /* starting block of extent */ @@ -1839,19 +1839,8 @@ void xfs_alloc_compute_maxlevels( xfs_mount_t *mp) /* file system mount structure */ { - int level; - uint maxblocks; - uint maxleafents; - int minleafrecs; - int minnoderecs; - - maxleafents = (mp->m_sb.sb_agblocks + 1) / 2; - minleafrecs = mp->m_alloc_mnr[0]; - minnoderecs = mp->m_alloc_mnr[1]; - maxblocks = (maxleafents + minleafrecs - 1) / minleafrecs; - for (level = 1; maxblocks > 1; level++) - maxblocks = (maxblocks + minnoderecs - 1) / minnoderecs; - mp->m_ag_maxlevels = level; + mp->m_ag_maxlevels = xfs_btree_compute_maxlevels(mp, mp->m_alloc_mnr, + (mp->m_sb.sb_agblocks + 1) / 2); } /* @@ -2658,55 +2647,79 @@ error0: return error; } -/* - * Free an extent. - * Just break up the extent address and hand off to xfs_free_ag_extent - * after fixing up the freelist. - */ -int /* error */ -xfs_free_extent( - xfs_trans_t *tp, /* transaction pointer */ - xfs_fsblock_t bno, /* starting block number of extent */ - xfs_extlen_t len) /* length of extent */ +/* Ensure that the freelist is at full capacity. */ +int +xfs_free_extent_fix_freelist( + struct xfs_trans *tp, + xfs_agnumber_t agno, + struct xfs_buf **agbp) { - xfs_alloc_arg_t args; - int error; + struct xfs_alloc_arg args; + int error; - ASSERT(len != 0); - memset(&args, 0, sizeof(xfs_alloc_arg_t)); + memset(&args, 0, sizeof(struct xfs_alloc_arg)); args.tp = tp; args.mp = tp->t_mountp; + args.agno = agno; /* * validate that the block number is legal - the enables us to detect * and handle a silent filesystem corruption rather than crashing. */ - args.agno = XFS_FSB_TO_AGNO(args.mp, bno); if (args.agno >= args.mp->m_sb.sb_agcount) return -EFSCORRUPTED; - args.agbno = XFS_FSB_TO_AGBNO(args.mp, bno); - if (args.agbno >= args.mp->m_sb.sb_agblocks) - return -EFSCORRUPTED; - args.pag = xfs_perag_get(args.mp, args.agno); ASSERT(args.pag); error = xfs_alloc_fix_freelist(&args, XFS_ALLOC_FLAG_FREEING); if (error) - goto error0; + goto out; + + *agbp = args.agbp; +out: + xfs_perag_put(args.pag); + return error; +} + +/* + * Free an extent. + * Just break up the extent address and hand off to xfs_free_ag_extent + * after fixing up the freelist. + */ +int /* error */ +xfs_free_extent( + struct xfs_trans *tp, /* transaction pointer */ + xfs_fsblock_t bno, /* starting block number of extent */ + xfs_extlen_t len) /* length of extent */ +{ + struct xfs_mount *mp = tp->t_mountp; + struct xfs_buf *agbp; + xfs_agnumber_t agno = XFS_FSB_TO_AGNO(mp, bno); + xfs_agblock_t agbno = XFS_FSB_TO_AGBNO(mp, bno); + int error; + + ASSERT(len != 0); + + error = xfs_free_extent_fix_freelist(tp, agno, &agbp); + if (error) + return error; + + XFS_WANT_CORRUPTED_GOTO(mp, agbno < mp->m_sb.sb_agblocks, err); /* validate the extent size is legal now we have the agf locked */ - if (args.agbno + len > - be32_to_cpu(XFS_BUF_TO_AGF(args.agbp)->agf_length)) { - error = -EFSCORRUPTED; - goto error0; - } + XFS_WANT_CORRUPTED_GOTO(mp, + agbno + len <= be32_to_cpu(XFS_BUF_TO_AGF(agbp)->agf_length), + err); - error = xfs_free_ag_extent(tp, args.agbp, args.agno, args.agbno, len, 0); - if (!error) - xfs_extent_busy_insert(tp, args.agno, args.agbno, len, 0); -error0: - xfs_perag_put(args.pag); + error = xfs_free_ag_extent(tp, agbp, agno, agbno, len, 0); + if (error) + goto err; + + xfs_extent_busy_insert(tp, agno, agbno, len, 0); + return 0; + +err: + xfs_trans_brelse(tp, agbp); return error; } diff --git a/fs/xfs/libxfs/xfs_alloc.h b/fs/xfs/libxfs/xfs_alloc.h index 135eb3d24db7..cf268b2d0b6c 100644 --- a/fs/xfs/libxfs/xfs_alloc.h +++ b/fs/xfs/libxfs/xfs_alloc.h @@ -212,13 +212,6 @@ xfs_free_extent( xfs_fsblock_t bno, /* starting block number of extent */ xfs_extlen_t len); /* length of extent */ -int /* error */ -xfs_alloc_lookup_le( - struct xfs_btree_cur *cur, /* btree cursor */ - xfs_agblock_t bno, /* starting block of extent */ - xfs_extlen_t len, /* length of extent */ - int *stat); /* success/failure */ - int /* error */ xfs_alloc_lookup_ge( struct xfs_btree_cur *cur, /* btree cursor */ @@ -236,5 +229,7 @@ xfs_alloc_get_rec( int xfs_read_agf(struct xfs_mount *mp, struct xfs_trans *tp, xfs_agnumber_t agno, int flags, struct xfs_buf **bpp); int xfs_alloc_fix_freelist(struct xfs_alloc_arg *args, int flags); +int xfs_free_extent_fix_freelist(struct xfs_trans *tp, xfs_agnumber_t agno, + struct xfs_buf **agbp); #endif /* __XFS_ALLOC_H__ */ diff --git a/fs/xfs/libxfs/xfs_attr_leaf.h b/fs/xfs/libxfs/xfs_attr_leaf.h index 882c8d338891..4f2aed04f827 100644 --- a/fs/xfs/libxfs/xfs_attr_leaf.h +++ b/fs/xfs/libxfs/xfs_attr_leaf.h @@ -50,7 +50,6 @@ int xfs_attr_shortform_lookup(struct xfs_da_args *args); int xfs_attr_shortform_getvalue(struct xfs_da_args *args); int xfs_attr_shortform_to_leaf(struct xfs_da_args *args); int xfs_attr_shortform_remove(struct xfs_da_args *args); -int xfs_attr_shortform_list(struct xfs_attr_list_context *context); int xfs_attr_shortform_allfit(struct xfs_buf *bp, struct xfs_inode *dp); int xfs_attr_shortform_bytesfit(xfs_inode_t *dp, int bytes); void xfs_attr_fork_remove(struct xfs_inode *ip, struct xfs_trans *tp); @@ -88,8 +87,6 @@ int xfs_attr3_leaf_toosmall(struct xfs_da_state *state, int *retval); void xfs_attr3_leaf_unbalance(struct xfs_da_state *state, struct xfs_da_state_blk *drop_blk, struct xfs_da_state_blk *save_blk); -int xfs_attr3_root_inactive(struct xfs_trans **trans, struct xfs_inode *dp); - /* * Utility routines. */ diff --git a/fs/xfs/libxfs/xfs_bmap.c b/fs/xfs/libxfs/xfs_bmap.c index 932381caef1b..2f2c85cc8117 100644 --- a/fs/xfs/libxfs/xfs_bmap.c +++ b/fs/xfs/libxfs/xfs_bmap.c @@ -570,14 +570,12 @@ xfs_bmap_validate_ret( */ void xfs_bmap_add_free( + struct xfs_mount *mp, /* mount point structure */ + struct xfs_bmap_free *flist, /* list of extents */ xfs_fsblock_t bno, /* fs block number of extent */ - xfs_filblks_t len, /* length of extent */ - xfs_bmap_free_t *flist, /* list of extents */ - xfs_mount_t *mp) /* mount point structure */ + xfs_filblks_t len) /* length of extent */ { - xfs_bmap_free_item_t *cur; /* current (next) element */ - xfs_bmap_free_item_t *new; /* new element */ - xfs_bmap_free_item_t *prev; /* previous element */ + struct xfs_bmap_free_item *new; /* new element */ #ifdef DEBUG xfs_agnumber_t agno; xfs_agblock_t agbno; @@ -597,17 +595,7 @@ xfs_bmap_add_free( new = kmem_zone_alloc(xfs_bmap_free_item_zone, KM_SLEEP); new->xbfi_startblock = bno; new->xbfi_blockcount = (xfs_extlen_t)len; - for (prev = NULL, cur = flist->xbf_first; - cur != NULL; - prev = cur, cur = cur->xbfi_next) { - if (cur->xbfi_startblock >= bno) - break; - } - if (prev) - prev->xbfi_next = new; - else - flist->xbf_first = new; - new->xbfi_next = cur; + list_add(&new->xbfi_list, &flist->xbf_flist); flist->xbf_count++; } @@ -617,14 +605,10 @@ xfs_bmap_add_free( */ void xfs_bmap_del_free( - xfs_bmap_free_t *flist, /* free item list header */ - xfs_bmap_free_item_t *prev, /* previous item on list, if any */ - xfs_bmap_free_item_t *free) /* list item to be freed */ + struct xfs_bmap_free *flist, /* free item list header */ + struct xfs_bmap_free_item *free) /* list item to be freed */ { - if (prev) - prev->xbfi_next = free->xbfi_next; - else - flist->xbf_first = free->xbfi_next; + list_del(&free->xbfi_list); flist->xbf_count--; kmem_zone_free(xfs_bmap_free_item_zone, free); } @@ -634,17 +618,16 @@ xfs_bmap_del_free( */ void xfs_bmap_cancel( - xfs_bmap_free_t *flist) /* list of bmap_free_items */ + struct xfs_bmap_free *flist) /* list of bmap_free_items */ { - xfs_bmap_free_item_t *free; /* free list item */ - xfs_bmap_free_item_t *next; + struct xfs_bmap_free_item *free; /* free list item */ if (flist->xbf_count == 0) return; - ASSERT(flist->xbf_first != NULL); - for (free = flist->xbf_first; free; free = next) { - next = free->xbfi_next; - xfs_bmap_del_free(flist, NULL, free); + while (!list_empty(&flist->xbf_flist)) { + free = list_first_entry(&flist->xbf_flist, + struct xfs_bmap_free_item, xbfi_list); + xfs_bmap_del_free(flist, free); } ASSERT(flist->xbf_count == 0); } @@ -699,7 +682,7 @@ xfs_bmap_btree_to_extents( cblock = XFS_BUF_TO_BLOCK(cbp); if ((error = xfs_btree_check_block(cur, cblock, 0, cbp))) return error; - xfs_bmap_add_free(cbno, 1, cur->bc_private.b.flist, mp); + xfs_bmap_add_free(mp, cur->bc_private.b.flist, cbno, 1); ip->i_d.di_nblocks--; xfs_trans_mod_dquot_byino(tp, ip, XFS_TRANS_DQ_BCOUNT, -1L); xfs_trans_binval(tp, cbp); @@ -5073,8 +5056,8 @@ xfs_bmap_del_extent( * If we need to, add to list of extents to delete. */ if (do_fx) - xfs_bmap_add_free(del->br_startblock, del->br_blockcount, flist, - mp); + xfs_bmap_add_free(mp, flist, del->br_startblock, + del->br_blockcount); /* * Adjust inode # blocks in the file. */ diff --git a/fs/xfs/libxfs/xfs_bmap.h b/fs/xfs/libxfs/xfs_bmap.h index 423a34e832bd..f1f3ae6c0a3f 100644 --- a/fs/xfs/libxfs/xfs_bmap.h +++ b/fs/xfs/libxfs/xfs_bmap.h @@ -62,12 +62,12 @@ struct xfs_bmalloca { * List of extents to be free "later". * The list is kept sorted on xbf_startblock. */ -typedef struct xfs_bmap_free_item +struct xfs_bmap_free_item { xfs_fsblock_t xbfi_startblock;/* starting fs block number */ xfs_extlen_t xbfi_blockcount;/* number of blocks in extent */ - struct xfs_bmap_free_item *xbfi_next; /* link to next entry */ -} xfs_bmap_free_item_t; + struct list_head xbfi_list; +}; /* * Header for free extent list. @@ -85,7 +85,7 @@ typedef struct xfs_bmap_free_item */ typedef struct xfs_bmap_free { - xfs_bmap_free_item_t *xbf_first; /* list of to-be-free extents */ + struct list_head xbf_flist; /* list of to-be-free extents */ int xbf_count; /* count of items on list */ int xbf_low; /* alloc in low mode */ } xfs_bmap_free_t; @@ -141,8 +141,10 @@ static inline int xfs_bmapi_aflag(int w) static inline void xfs_bmap_init(xfs_bmap_free_t *flp, xfs_fsblock_t *fbp) { - ((flp)->xbf_first = NULL, (flp)->xbf_count = 0, \ - (flp)->xbf_low = 0, *(fbp) = NULLFSBLOCK); + INIT_LIST_HEAD(&flp->xbf_flist); + flp->xbf_count = 0; + flp->xbf_low = 0; + *fbp = NULLFSBLOCK; } /* @@ -191,8 +193,8 @@ void xfs_bmap_trace_exlist(struct xfs_inode *ip, xfs_extnum_t cnt, int xfs_bmap_add_attrfork(struct xfs_inode *ip, int size, int rsvd); void xfs_bmap_local_to_extents_empty(struct xfs_inode *ip, int whichfork); -void xfs_bmap_add_free(xfs_fsblock_t bno, xfs_filblks_t len, - struct xfs_bmap_free *flist, struct xfs_mount *mp); +void xfs_bmap_add_free(struct xfs_mount *mp, struct xfs_bmap_free *flist, + xfs_fsblock_t bno, xfs_filblks_t len); void xfs_bmap_cancel(struct xfs_bmap_free *flist); int xfs_bmap_finish(struct xfs_trans **tp, struct xfs_bmap_free *flist, struct xfs_inode *ip); diff --git a/fs/xfs/libxfs/xfs_bmap_btree.c b/fs/xfs/libxfs/xfs_bmap_btree.c index 6282f6e708af..db0c71e470c9 100644 --- a/fs/xfs/libxfs/xfs_bmap_btree.c +++ b/fs/xfs/libxfs/xfs_bmap_btree.c @@ -526,7 +526,7 @@ xfs_bmbt_free_block( struct xfs_trans *tp = cur->bc_tp; xfs_fsblock_t fsbno = XFS_DADDR_TO_FSB(mp, XFS_BUF_ADDR(bp)); - xfs_bmap_add_free(fsbno, 1, cur->bc_private.b.flist, mp); + xfs_bmap_add_free(mp, cur->bc_private.b.flist, fsbno, 1); ip->i_d.di_nblocks--; xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE); diff --git a/fs/xfs/libxfs/xfs_btree.c b/fs/xfs/libxfs/xfs_btree.c index 1f88e1ce770f..07eeb0b4ca74 100644 --- a/fs/xfs/libxfs/xfs_btree.c +++ b/fs/xfs/libxfs/xfs_btree.c @@ -543,12 +543,12 @@ xfs_btree_ptr_addr( */ STATIC struct xfs_btree_block * xfs_btree_get_iroot( - struct xfs_btree_cur *cur) + struct xfs_btree_cur *cur) { - struct xfs_ifork *ifp; + struct xfs_ifork *ifp; - ifp = XFS_IFORK_PTR(cur->bc_private.b.ip, cur->bc_private.b.whichfork); - return (struct xfs_btree_block *)ifp->if_broot; + ifp = XFS_IFORK_PTR(cur->bc_private.b.ip, cur->bc_private.b.whichfork); + return (struct xfs_btree_block *)ifp->if_broot; } /* @@ -4152,3 +4152,22 @@ xfs_btree_sblock_verify( return true; } + +/* + * Calculate the number of btree levels needed to store a given number of + * records in a short-format btree. + */ +uint +xfs_btree_compute_maxlevels( + struct xfs_mount *mp, + uint *limits, + unsigned long len) +{ + uint level; + unsigned long maxblocks; + + maxblocks = (len + limits[0] - 1) / limits[0]; + for (level = 1; maxblocks > 1; level++) + maxblocks = (maxblocks + limits[1] - 1) / limits[1]; + return level; +} diff --git a/fs/xfs/libxfs/xfs_btree.h b/fs/xfs/libxfs/xfs_btree.h index 2e874be70209..785a99682159 100644 --- a/fs/xfs/libxfs/xfs_btree.h +++ b/fs/xfs/libxfs/xfs_btree.h @@ -474,5 +474,7 @@ static inline int xfs_btree_get_level(struct xfs_btree_block *block) bool xfs_btree_sblock_v5hdr_verify(struct xfs_buf *bp); bool xfs_btree_sblock_verify(struct xfs_buf *bp, unsigned int max_recs); +uint xfs_btree_compute_maxlevels(struct xfs_mount *mp, uint *limits, + unsigned long len); #endif /* __XFS_BTREE_H__ */ diff --git a/fs/xfs/libxfs/xfs_da_btree.c b/fs/xfs/libxfs/xfs_da_btree.c index 097bf7717d80..0f1f165f4048 100644 --- a/fs/xfs/libxfs/xfs_da_btree.c +++ b/fs/xfs/libxfs/xfs_da_btree.c @@ -356,7 +356,6 @@ xfs_da3_split( struct xfs_da_state_blk *newblk; struct xfs_da_state_blk *addblk; struct xfs_da_intnode *node; - struct xfs_buf *bp; int max; int action = 0; int error; @@ -397,7 +396,9 @@ xfs_da3_split( break; } /* - * Entry wouldn't fit, split the leaf again. + * Entry wouldn't fit, split the leaf again. The new + * extrablk will be consumed by xfs_da3_node_split if + * the node is split. */ state->extravalid = 1; if (state->inleaf) { @@ -446,6 +447,14 @@ xfs_da3_split( return 0; /* + * xfs_da3_node_split() should have consumed any extra blocks we added + * during a double leaf split in the attr fork. This is guaranteed as + * we can't be here if the attr fork only has a single leaf block. + */ + ASSERT(state->extravalid == 0 || + state->path.blk[max].magic == XFS_DIR2_LEAFN_MAGIC); + + /* * Split the root node. */ ASSERT(state->path.active == 0); @@ -457,43 +466,33 @@ xfs_da3_split( } /* - * Update pointers to the node which used to be block 0 and - * just got bumped because of the addition of a new root node. - * There might be three blocks involved if a double split occurred, - * and the original block 0 could be at any position in the list. + * Update pointers to the node which used to be block 0 and just got + * bumped because of the addition of a new root node. Note that the + * original block 0 could be at any position in the list of blocks in + * the tree. * - * Note: the magic numbers and sibling pointers are in the same - * physical place for both v2 and v3 headers (by design). Hence it - * doesn't matter which version of the xfs_da_intnode structure we use - * here as the result will be the same using either structure. + * Note: the magic numbers and sibling pointers are in the same physical + * place for both v2 and v3 headers (by design). Hence it doesn't matter + * which version of the xfs_da_intnode structure we use here as the + * result will be the same using either structure. */ node = oldblk->bp->b_addr; if (node->hdr.info.forw) { - if (be32_to_cpu(node->hdr.info.forw) == addblk->blkno) { - bp = addblk->bp; - } else { - ASSERT(state->extravalid); - bp = state->extrablk.bp; - } - node = bp->b_addr; + ASSERT(be32_to_cpu(node->hdr.info.forw) == addblk->blkno); + node = addblk->bp->b_addr; node->hdr.info.back = cpu_to_be32(oldblk->blkno); - xfs_trans_log_buf(state->args->trans, bp, - XFS_DA_LOGRANGE(node, &node->hdr.info, - sizeof(node->hdr.info))); + xfs_trans_log_buf(state->args->trans, addblk->bp, + XFS_DA_LOGRANGE(node, &node->hdr.info, + sizeof(node->hdr.info))); } node = oldblk->bp->b_addr; if (node->hdr.info.back) { - if (be32_to_cpu(node->hdr.info.back) == addblk->blkno) { - bp = addblk->bp; - } else { - ASSERT(state->extravalid); - bp = state->extrablk.bp; - } - node = bp->b_addr; + ASSERT(be32_to_cpu(node->hdr.info.back) == addblk->blkno); + node = addblk->bp->b_addr; node->hdr.info.forw = cpu_to_be32(oldblk->blkno); - xfs_trans_log_buf(state->args->trans, bp, - XFS_DA_LOGRANGE(node, &node->hdr.info, - sizeof(node->hdr.info))); + xfs_trans_log_buf(state->args->trans, addblk->bp, + XFS_DA_LOGRANGE(node, &node->hdr.info, + sizeof(node->hdr.info))); } addblk->bp = NULL; return 0; diff --git a/fs/xfs/libxfs/xfs_da_format.c b/fs/xfs/libxfs/xfs_da_format.c index 9d624a622946..f1e8d4dbb600 100644 --- a/fs/xfs/libxfs/xfs_da_format.c +++ b/fs/xfs/libxfs/xfs_da_format.c @@ -40,8 +40,7 @@ xfs_dir2_sf_entsize( int count = sizeof(struct xfs_dir2_sf_entry); /* namelen + offset */ count += len; /* name */ - count += hdr->i8count ? sizeof(xfs_dir2_ino8_t) : - sizeof(xfs_dir2_ino4_t); /* ino # */ + count += hdr->i8count ? XFS_INO64_SIZE : XFS_INO32_SIZE; /* ino # */ return count; } @@ -125,33 +124,33 @@ xfs_dir3_sfe_put_ftype( static xfs_ino_t xfs_dir2_sf_get_ino( struct xfs_dir2_sf_hdr *hdr, - xfs_dir2_inou_t *from) + __uint8_t *from) { if (hdr->i8count) - return get_unaligned_be64(&from->i8.i) & 0x00ffffffffffffffULL; + return get_unaligned_be64(from) & 0x00ffffffffffffffULL; else - return get_unaligned_be32(&from->i4.i); + return get_unaligned_be32(from); } static void xfs_dir2_sf_put_ino( struct xfs_dir2_sf_hdr *hdr, - xfs_dir2_inou_t *to, + __uint8_t *to, xfs_ino_t ino) { ASSERT((ino & 0xff00000000000000ULL) == 0); if (hdr->i8count) - put_unaligned_be64(ino, &to->i8.i); + put_unaligned_be64(ino, to); else - put_unaligned_be32(ino, &to->i4.i); + put_unaligned_be32(ino, to); } static xfs_ino_t xfs_dir2_sf_get_parent_ino( struct xfs_dir2_sf_hdr *hdr) { - return xfs_dir2_sf_get_ino(hdr, &hdr->parent); + return xfs_dir2_sf_get_ino(hdr, hdr->parent); } static void @@ -159,7 +158,7 @@ xfs_dir2_sf_put_parent_ino( struct xfs_dir2_sf_hdr *hdr, xfs_ino_t ino) { - xfs_dir2_sf_put_ino(hdr, &hdr->parent, ino); + xfs_dir2_sf_put_ino(hdr, hdr->parent, ino); } /* @@ -173,8 +172,7 @@ xfs_dir2_sfe_get_ino( struct xfs_dir2_sf_hdr *hdr, struct xfs_dir2_sf_entry *sfep) { - return xfs_dir2_sf_get_ino(hdr, - (xfs_dir2_inou_t *)&sfep->name[sfep->namelen]); + return xfs_dir2_sf_get_ino(hdr, &sfep->name[sfep->namelen]); } static void @@ -183,8 +181,7 @@ xfs_dir2_sfe_put_ino( struct xfs_dir2_sf_entry *sfep, xfs_ino_t ino) { - xfs_dir2_sf_put_ino(hdr, - (xfs_dir2_inou_t *)&sfep->name[sfep->namelen], ino); + xfs_dir2_sf_put_ino(hdr, &sfep->name[sfep->namelen], ino); } static xfs_ino_t @@ -192,8 +189,7 @@ xfs_dir3_sfe_get_ino( struct xfs_dir2_sf_hdr *hdr, struct xfs_dir2_sf_entry *sfep) { - return xfs_dir2_sf_get_ino(hdr, - (xfs_dir2_inou_t *)&sfep->name[sfep->namelen + 1]); + return xfs_dir2_sf_get_ino(hdr, &sfep->name[sfep->namelen + 1]); } static void @@ -202,8 +198,7 @@ xfs_dir3_sfe_put_ino( struct xfs_dir2_sf_entry *sfep, xfs_ino_t ino) { - xfs_dir2_sf_put_ino(hdr, - (xfs_dir2_inou_t *)&sfep->name[sfep->namelen + 1], ino); + xfs_dir2_sf_put_ino(hdr, &sfep->name[sfep->namelen + 1], ino); } diff --git a/fs/xfs/libxfs/xfs_da_format.h b/fs/xfs/libxfs/xfs_da_format.h index 8d4d8bce41bf..685f23b67056 100644 --- a/fs/xfs/libxfs/xfs_da_format.h +++ b/fs/xfs/libxfs/xfs_da_format.h @@ -192,12 +192,6 @@ typedef __uint16_t xfs_dir2_data_off_t; typedef uint xfs_dir2_data_aoff_t; /* argument form */ /* - * Normalized offset (in a data block) of the entry, really xfs_dir2_data_off_t. - * Only need 16 bits, this is the byte offset into the single block form. - */ -typedef struct { __uint8_t i[2]; } __arch_pack xfs_dir2_sf_off_t; - -/* * Offset in data space of a data entry. */ typedef __uint32_t xfs_dir2_dataptr_t; @@ -214,22 +208,10 @@ typedef xfs_off_t xfs_dir2_off_t; */ typedef __uint32_t xfs_dir2_db_t; -/* - * Inode number stored as 8 8-bit values. - */ -typedef struct { __uint8_t i[8]; } xfs_dir2_ino8_t; - -/* - * Inode number stored as 4 8-bit values. - * Works a lot of the time, when all the inode numbers in a directory - * fit in 32 bits. - */ -typedef struct { __uint8_t i[4]; } xfs_dir2_ino4_t; +#define XFS_INO32_SIZE 4 +#define XFS_INO64_SIZE 8 +#define XFS_INO64_DIFF (XFS_INO64_SIZE - XFS_INO32_SIZE) -typedef union { - xfs_dir2_ino8_t i8; - xfs_dir2_ino4_t i4; -} xfs_dir2_inou_t; #define XFS_DIR2_MAX_SHORT_INUM ((xfs_ino_t)0xffffffffULL) /* @@ -246,39 +228,38 @@ typedef union { typedef struct xfs_dir2_sf_hdr { __uint8_t count; /* count of entries */ __uint8_t i8count; /* count of 8-byte inode #s */ - xfs_dir2_inou_t parent; /* parent dir inode number */ -} __arch_pack xfs_dir2_sf_hdr_t; + __uint8_t parent[8]; /* parent dir inode number */ +} __packed xfs_dir2_sf_hdr_t; typedef struct xfs_dir2_sf_entry { __u8 namelen; /* actual name length */ - xfs_dir2_sf_off_t offset; /* saved offset */ + __u8 offset[2]; /* saved offset */ __u8 name[]; /* name, variable size */ /* * A single byte containing the file type field follows the inode * number for version 3 directory entries. * - * A xfs_dir2_ino8_t or xfs_dir2_ino4_t follows here, at a - * variable offset after the name. + * A 64-bit or 32-bit inode number follows here, at a variable offset + * after the name. */ -} __arch_pack xfs_dir2_sf_entry_t; +} xfs_dir2_sf_entry_t; static inline int xfs_dir2_sf_hdr_size(int i8count) { return sizeof(struct xfs_dir2_sf_hdr) - - (i8count == 0) * - (sizeof(xfs_dir2_ino8_t) - sizeof(xfs_dir2_ino4_t)); + (i8count == 0) * XFS_INO64_DIFF; } static inline xfs_dir2_data_aoff_t xfs_dir2_sf_get_offset(xfs_dir2_sf_entry_t *sfep) { - return get_unaligned_be16(&sfep->offset.i); + return get_unaligned_be16(sfep->offset); } static inline void xfs_dir2_sf_put_offset(xfs_dir2_sf_entry_t *sfep, xfs_dir2_data_aoff_t off) { - put_unaligned_be16(off, &sfep->offset.i); + put_unaligned_be16(off, sfep->offset); } static inline struct xfs_dir2_sf_entry * diff --git a/fs/xfs/libxfs/xfs_dir2_sf.c b/fs/xfs/libxfs/xfs_dir2_sf.c index e5bb9cc3b243..c6809ff41197 100644 --- a/fs/xfs/libxfs/xfs_dir2_sf.c +++ b/fs/xfs/libxfs/xfs_dir2_sf.c @@ -126,13 +126,12 @@ xfs_dir2_block_sfsize( /* * Calculate the new size, see if we should give up yet. */ - size = xfs_dir2_sf_hdr_size(i8count) + /* header */ - count + /* namelen */ - count * (uint)sizeof(xfs_dir2_sf_off_t) + /* offset */ - namelen + /* name */ - (i8count ? /* inumber */ - (uint)sizeof(xfs_dir2_ino8_t) * count : - (uint)sizeof(xfs_dir2_ino4_t) * count); + size = xfs_dir2_sf_hdr_size(i8count) + /* header */ + count * 3 * sizeof(u8) + /* namelen + offset */ + namelen + /* name */ + (i8count ? /* inumber */ + count * XFS_INO64_SIZE : + count * XFS_INO32_SIZE); if (size > XFS_IFORK_DSIZE(dp)) return size; /* size value is a failure */ } @@ -319,10 +318,7 @@ xfs_dir2_sf_addname( /* * Yes, adjust the inode size. old count + (parent + new) */ - incr_isize += - (sfp->count + 2) * - ((uint)sizeof(xfs_dir2_ino8_t) - - (uint)sizeof(xfs_dir2_ino4_t)); + incr_isize += (sfp->count + 2) * XFS_INO64_DIFF; objchange = 1; } @@ -897,11 +893,7 @@ xfs_dir2_sf_replace( int error; /* error return value */ int newsize; /* new inode size */ - newsize = - dp->i_df.if_bytes + - (sfp->count + 1) * - ((uint)sizeof(xfs_dir2_ino8_t) - - (uint)sizeof(xfs_dir2_ino4_t)); + newsize = dp->i_df.if_bytes + (sfp->count + 1) * XFS_INO64_DIFF; /* * Won't fit as shortform, convert to block then do replace. */ @@ -1022,10 +1014,7 @@ xfs_dir2_sf_toino4( /* * Compute the new inode size. */ - newsize = - oldsize - - (oldsfp->count + 1) * - ((uint)sizeof(xfs_dir2_ino8_t) - (uint)sizeof(xfs_dir2_ino4_t)); + newsize = oldsize - (oldsfp->count + 1) * XFS_INO64_DIFF; xfs_idata_realloc(dp, -oldsize, XFS_DATA_FORK); xfs_idata_realloc(dp, newsize, XFS_DATA_FORK); /* @@ -1048,7 +1037,7 @@ xfs_dir2_sf_toino4( i++, sfep = dp->d_ops->sf_nextentry(sfp, sfep), oldsfep = dp->d_ops->sf_nextentry(oldsfp, oldsfep)) { sfep->namelen = oldsfep->namelen; - sfep->offset = oldsfep->offset; + memcpy(sfep->offset, oldsfep->offset, sizeof(sfep->offset)); memcpy(sfep->name, oldsfep->name, sfep->namelen); dp->d_ops->sf_put_ino(sfp, sfep, dp->d_ops->sf_get_ino(oldsfp, oldsfep)); @@ -1098,10 +1087,7 @@ xfs_dir2_sf_toino8( /* * Compute the new inode size (nb: entry count + 1 for parent) */ - newsize = - oldsize + - (oldsfp->count + 1) * - ((uint)sizeof(xfs_dir2_ino8_t) - (uint)sizeof(xfs_dir2_ino4_t)); + newsize = oldsize + (oldsfp->count + 1) * XFS_INO64_DIFF; xfs_idata_realloc(dp, -oldsize, XFS_DATA_FORK); xfs_idata_realloc(dp, newsize, XFS_DATA_FORK); /* @@ -1124,7 +1110,7 @@ xfs_dir2_sf_toino8( i++, sfep = dp->d_ops->sf_nextentry(sfp, sfep), oldsfep = dp->d_ops->sf_nextentry(oldsfp, oldsfep)) { sfep->namelen = oldsfep->namelen; - sfep->offset = oldsfep->offset; + memcpy(sfep->offset, oldsfep->offset, sizeof(sfep->offset)); memcpy(sfep->name, oldsfep->name, sfep->namelen); dp->d_ops->sf_put_ino(sfp, sfep, dp->d_ops->sf_get_ino(oldsfp, oldsfep)); diff --git a/fs/xfs/libxfs/xfs_format.h b/fs/xfs/libxfs/xfs_format.h index dc97eb21af07..adb204d40f22 100644 --- a/fs/xfs/libxfs/xfs_format.h +++ b/fs/xfs/libxfs/xfs_format.h @@ -1435,41 +1435,57 @@ typedef __be64 xfs_bmbt_ptr_t, xfs_bmdr_ptr_t; * with the crc feature bit, and all accesses to them must be conditional on * that flag. */ +/* short form block header */ +struct xfs_btree_block_shdr { + __be32 bb_leftsib; + __be32 bb_rightsib; + + __be64 bb_blkno; + __be64 bb_lsn; + uuid_t bb_uuid; + __be32 bb_owner; + __le32 bb_crc; +}; + +/* long form block header */ +struct xfs_btree_block_lhdr { + __be64 bb_leftsib; + __be64 bb_rightsib; + + __be64 bb_blkno; + __be64 bb_lsn; + uuid_t bb_uuid; + __be64 bb_owner; + __le32 bb_crc; + __be32 bb_pad; /* padding for alignment */ +}; + struct xfs_btree_block { __be32 bb_magic; /* magic number for block type */ __be16 bb_level; /* 0 is a leaf */ __be16 bb_numrecs; /* current # of data records */ union { - struct { - __be32 bb_leftsib; - __be32 bb_rightsib; - - __be64 bb_blkno; - __be64 bb_lsn; - uuid_t bb_uuid; - __be32 bb_owner; - __le32 bb_crc; - } s; /* short form pointers */ - struct { - __be64 bb_leftsib; - __be64 bb_rightsib; - - __be64 bb_blkno; - __be64 bb_lsn; - uuid_t bb_uuid; - __be64 bb_owner; - __le32 bb_crc; - __be32 bb_pad; /* padding for alignment */ - } l; /* long form pointers */ + struct xfs_btree_block_shdr s; + struct xfs_btree_block_lhdr l; } bb_u; /* rest */ }; -#define XFS_BTREE_SBLOCK_LEN 16 /* size of a short form block */ -#define XFS_BTREE_LBLOCK_LEN 24 /* size of a long form block */ +/* size of a short form block */ +#define XFS_BTREE_SBLOCK_LEN \ + (offsetof(struct xfs_btree_block, bb_u) + \ + offsetof(struct xfs_btree_block_shdr, bb_blkno)) +/* size of a long form block */ +#define XFS_BTREE_LBLOCK_LEN \ + (offsetof(struct xfs_btree_block, bb_u) + \ + offsetof(struct xfs_btree_block_lhdr, bb_blkno)) /* sizes of CRC enabled btree blocks */ -#define XFS_BTREE_SBLOCK_CRC_LEN (XFS_BTREE_SBLOCK_LEN + 40) -#define XFS_BTREE_LBLOCK_CRC_LEN (XFS_BTREE_LBLOCK_LEN + 48) +#define XFS_BTREE_SBLOCK_CRC_LEN \ + (offsetof(struct xfs_btree_block, bb_u) + \ + sizeof(struct xfs_btree_block_shdr)) +#define XFS_BTREE_LBLOCK_CRC_LEN \ + (offsetof(struct xfs_btree_block, bb_u) + \ + sizeof(struct xfs_btree_block_lhdr)) #define XFS_BTREE_SBLOCK_CRC_OFF \ offsetof(struct xfs_btree_block, bb_u.s.bb_crc) diff --git a/fs/xfs/libxfs/xfs_fs.h b/fs/xfs/libxfs/xfs_fs.h index fffe3d01bd9f..f5ec9c5ccae6 100644 --- a/fs/xfs/libxfs/xfs_fs.h +++ b/fs/xfs/libxfs/xfs_fs.h @@ -521,12 +521,8 @@ typedef struct xfs_swapext #define XFS_IOC_ERROR_CLEARALL _IOW ('X', 117, struct xfs_error_injection) /* XFS_IOC_ATTRCTL_BY_HANDLE -- deprecated 118 */ -/* XFS_IOC_FREEZE -- FIFREEZE 119 */ -/* XFS_IOC_THAW -- FITHAW 120 */ -#ifndef FIFREEZE -#define XFS_IOC_FREEZE _IOWR('X', 119, int) -#define XFS_IOC_THAW _IOWR('X', 120, int) -#endif +#define XFS_IOC_FREEZE _IOWR('X', 119, int) /* aka FIFREEZE */ +#define XFS_IOC_THAW _IOWR('X', 120, int) /* aka FITHAW */ #define XFS_IOC_FSSETDM_BY_HANDLE _IOW ('X', 121, struct xfs_fsop_setdm_handlereq) #define XFS_IOC_ATTRLIST_BY_HANDLE _IOW ('X', 122, struct xfs_fsop_attrlist_handlereq) diff --git a/fs/xfs/libxfs/xfs_ialloc.c b/fs/xfs/libxfs/xfs_ialloc.c index 22297f9b0fd5..4b1e408169a8 100644 --- a/fs/xfs/libxfs/xfs_ialloc.c +++ b/fs/xfs/libxfs/xfs_ialloc.c @@ -1828,9 +1828,8 @@ xfs_difree_inode_chunk( if (!xfs_inobt_issparse(rec->ir_holemask)) { /* not sparse, calculate extent info directly */ - xfs_bmap_add_free(XFS_AGB_TO_FSB(mp, agno, - XFS_AGINO_TO_AGBNO(mp, rec->ir_startino)), - mp->m_ialloc_blks, flist, mp); + xfs_bmap_add_free(mp, flist, XFS_AGB_TO_FSB(mp, agno, sagbno), + mp->m_ialloc_blks); return; } @@ -1873,8 +1872,8 @@ xfs_difree_inode_chunk( ASSERT(agbno % mp->m_sb.sb_spino_align == 0); ASSERT(contigblk % mp->m_sb.sb_spino_align == 0); - xfs_bmap_add_free(XFS_AGB_TO_FSB(mp, agno, agbno), contigblk, - flist, mp); + xfs_bmap_add_free(mp, flist, XFS_AGB_TO_FSB(mp, agno, agbno), + contigblk); /* reset range to current bit and carry on... */ startidx = endidx = nextbit; @@ -2395,20 +2394,11 @@ void xfs_ialloc_compute_maxlevels( xfs_mount_t *mp) /* file system mount structure */ { - int level; - uint maxblocks; - uint maxleafents; - int minleafrecs; - int minnoderecs; - - maxleafents = (1LL << XFS_INO_AGINO_BITS(mp)) >> - XFS_INODES_PER_CHUNK_LOG; - minleafrecs = mp->m_inobt_mnr[0]; - minnoderecs = mp->m_inobt_mnr[1]; - maxblocks = (maxleafents + minleafrecs - 1) / minleafrecs; - for (level = 1; maxblocks > 1; level++) - maxblocks = (maxblocks + minnoderecs - 1) / minnoderecs; - mp->m_in_maxlevels = level; + uint inodes; + + inodes = (1LL << XFS_INO_AGINO_BITS(mp)) >> XFS_INODES_PER_CHUNK_LOG; + mp->m_in_maxlevels = xfs_btree_compute_maxlevels(mp, mp->m_inobt_mnr, + inodes); } /* diff --git a/fs/xfs/libxfs/xfs_rtbitmap.c b/fs/xfs/libxfs/xfs_rtbitmap.c index 951c044e24e4..e2e1106c9fad 100644 --- a/fs/xfs/libxfs/xfs_rtbitmap.c +++ b/fs/xfs/libxfs/xfs_rtbitmap.c @@ -70,7 +70,7 @@ const struct xfs_buf_ops xfs_rtbuf_ops = { * Get a buffer for the bitmap or summary file block specified. * The buffer is returned read and locked. */ -int +static int xfs_rtbuf_get( xfs_mount_t *mp, /* file system mount structure */ xfs_trans_t *tp, /* transaction pointer */ diff --git a/fs/xfs/xfs_aops.c b/fs/xfs/xfs_aops.c index 87d2b215cbbd..7575cfc3ad15 100644 --- a/fs/xfs/xfs_aops.c +++ b/fs/xfs/xfs_aops.c @@ -87,6 +87,12 @@ xfs_find_bdev_for_inode( * We're now finished for good with this page. Update the page state via the * associated buffer_heads, paying attention to the start and end offsets that * we need to process on the page. + * + * Landmine Warning: bh->b_end_io() will call end_page_writeback() on the last + * buffer in the IO. Once it does this, it is unsafe to access the bufferhead or + * the page at all, as we may be racing with memory reclaim and it can free both + * the bufferhead chain and the page as it will see the page as clean and + * unused. */ static void xfs_finish_page_writeback( @@ -95,8 +101,9 @@ xfs_finish_page_writeback( int error) { unsigned int end = bvec->bv_offset + bvec->bv_len - 1; - struct buffer_head *head, *bh; + struct buffer_head *head, *bh, *next; unsigned int off = 0; + unsigned int bsize; ASSERT(bvec->bv_offset < PAGE_SIZE); ASSERT((bvec->bv_offset & ((1 << inode->i_blkbits) - 1)) == 0); @@ -105,15 +112,17 @@ xfs_finish_page_writeback( bh = head = page_buffers(bvec->bv_page); + bsize = bh->b_size; do { + next = bh->b_this_page; if (off < bvec->bv_offset) goto next_bh; if (off > end) break; bh->b_end_io(bh, !error); next_bh: - off += bh->b_size; - } while ((bh = bh->b_this_page) != head); + off += bsize; + } while ((bh = next) != head); } /* @@ -1041,6 +1050,20 @@ xfs_vm_releasepage( trace_xfs_releasepage(page->mapping->host, page, 0, 0); + /* + * mm accommodates an old ext3 case where clean pages might not have had + * the dirty bit cleared. Thus, it can send actual dirty pages to + * ->releasepage() via shrink_active_list(). Conversely, + * block_invalidatepage() can send pages that are still marked dirty + * but otherwise have invalidated buffers. + * + * We've historically freed buffers on the latter. Instead, quietly + * filter out all dirty pages to avoid spurious buffer state warnings. + * This can likely be removed once shrink_active_list() is fixed. + */ + if (PageDirty(page)) + return 0; + xfs_count_page_state(page, &delalloc, &unwritten); if (WARN_ON_ONCE(delalloc)) @@ -1144,6 +1167,8 @@ __xfs_get_blocks( ssize_t size; int new = 0; + BUG_ON(create && !direct); + if (XFS_FORCED_SHUTDOWN(mp)) return -EIO; @@ -1151,22 +1176,14 @@ __xfs_get_blocks( ASSERT(bh_result->b_size >= (1 << inode->i_blkbits)); size = bh_result->b_size; - if (!create && direct && offset >= i_size_read(inode)) + if (!create && offset >= i_size_read(inode)) return 0; /* * Direct I/O is usually done on preallocated files, so try getting - * a block mapping without an exclusive lock first. For buffered - * writes we already have the exclusive iolock anyway, so avoiding - * a lock roundtrip here by taking the ilock exclusive from the - * beginning is a useful micro optimization. + * a block mapping without an exclusive lock first. */ - if (create && !direct) { - lockmode = XFS_ILOCK_EXCL; - xfs_ilock(ip, lockmode); - } else { - lockmode = xfs_ilock_data_map_shared(ip); - } + lockmode = xfs_ilock_data_map_shared(ip); ASSERT(offset <= mp->m_super->s_maxbytes); if (offset + size > mp->m_super->s_maxbytes) @@ -1185,37 +1202,19 @@ __xfs_get_blocks( (imap.br_startblock == HOLESTARTBLOCK || imap.br_startblock == DELAYSTARTBLOCK) || (IS_DAX(inode) && ISUNWRITTEN(&imap)))) { - if (direct || xfs_get_extsz_hint(ip)) { - /* - * xfs_iomap_write_direct() expects the shared lock. It - * is unlocked on return. - */ - if (lockmode == XFS_ILOCK_EXCL) - xfs_ilock_demote(ip, lockmode); - - error = xfs_iomap_write_direct(ip, offset, size, - &imap, nimaps); - if (error) - return error; - new = 1; + /* + * xfs_iomap_write_direct() expects the shared lock. It + * is unlocked on return. + */ + if (lockmode == XFS_ILOCK_EXCL) + xfs_ilock_demote(ip, lockmode); - } else { - /* - * Delalloc reservations do not require a transaction, - * we can go on without dropping the lock here. If we - * are allocating a new delalloc block, make sure that - * we set the new flag so that we mark the buffer new so - * that we know that it is newly allocated if the write - * fails. - */ - if (nimaps && imap.br_startblock == HOLESTARTBLOCK) - new = 1; - error = xfs_iomap_write_delay(ip, offset, size, &imap); - if (error) - goto out_unlock; + error = xfs_iomap_write_direct(ip, offset, size, + &imap, nimaps); + if (error) + return error; + new = 1; - xfs_iunlock(ip, lockmode); - } trace_xfs_get_blocks_alloc(ip, offset, size, ISUNWRITTEN(&imap) ? XFS_IO_UNWRITTEN : XFS_IO_DELALLOC, &imap); @@ -1236,9 +1235,7 @@ __xfs_get_blocks( } /* trim mapping down to size requested */ - if (direct || size > (1 << inode->i_blkbits)) - xfs_map_trim_size(inode, iblock, bh_result, - &imap, offset, size); + xfs_map_trim_size(inode, iblock, bh_result, &imap, offset, size); /* * For unwritten extents do not report a disk address in the buffered @@ -1251,7 +1248,7 @@ __xfs_get_blocks( if (ISUNWRITTEN(&imap)) set_buffer_unwritten(bh_result); /* direct IO needs special help */ - if (create && direct) { + if (create) { if (dax_fault) ASSERT(!ISUNWRITTEN(&imap)); else @@ -1280,14 +1277,7 @@ __xfs_get_blocks( (new || ISUNWRITTEN(&imap)))) set_buffer_new(bh_result); - if (imap.br_startblock == DELAYSTARTBLOCK) { - BUG_ON(direct); - if (create) { - set_buffer_uptodate(bh_result); - set_buffer_mapped(bh_result); - set_buffer_delay(bh_result); - } - } + BUG_ON(direct && imap.br_startblock == DELAYSTARTBLOCK); return 0; @@ -1337,7 +1327,7 @@ xfs_get_blocks_dax_fault( * whereas if we have flags set we will always be called in task context * (i.e. from a workqueue). */ -STATIC int +int xfs_end_io_direct_write( struct kiocb *iocb, loff_t offset, @@ -1408,234 +1398,10 @@ xfs_vm_direct_IO( struct kiocb *iocb, struct iov_iter *iter) { - struct inode *inode = iocb->ki_filp->f_mapping->host; - dio_iodone_t *endio = NULL; - int flags = 0; - struct block_device *bdev; - - if (iov_iter_rw(iter) == WRITE) { - endio = xfs_end_io_direct_write; - flags = DIO_ASYNC_EXTEND; - } - - if (IS_DAX(inode)) { - return dax_do_io(iocb, inode, iter, - xfs_get_blocks_direct, endio, 0); - } - - bdev = xfs_find_bdev_for_inode(inode); - return __blockdev_direct_IO(iocb, inode, bdev, iter, - xfs_get_blocks_direct, endio, NULL, flags); -} - -/* - * Punch out the delalloc blocks we have already allocated. - * - * Don't bother with xfs_setattr given that nothing can have made it to disk yet - * as the page is still locked at this point. - */ -STATIC void -xfs_vm_kill_delalloc_range( - struct inode *inode, - loff_t start, - loff_t end) -{ - struct xfs_inode *ip = XFS_I(inode); - xfs_fileoff_t start_fsb; - xfs_fileoff_t end_fsb; - int error; - - start_fsb = XFS_B_TO_FSB(ip->i_mount, start); - end_fsb = XFS_B_TO_FSB(ip->i_mount, end); - if (end_fsb <= start_fsb) - return; - - xfs_ilock(ip, XFS_ILOCK_EXCL); - error = xfs_bmap_punch_delalloc_range(ip, start_fsb, - end_fsb - start_fsb); - if (error) { - /* something screwed, just bail */ - if (!XFS_FORCED_SHUTDOWN(ip->i_mount)) { - xfs_alert(ip->i_mount, - "xfs_vm_write_failed: unable to clean up ino %lld", - ip->i_ino); - } - } - xfs_iunlock(ip, XFS_ILOCK_EXCL); -} - -STATIC void -xfs_vm_write_failed( - struct inode *inode, - struct page *page, - loff_t pos, - unsigned len) -{ - loff_t block_offset; - loff_t block_start; - loff_t block_end; - loff_t from = pos & (PAGE_SIZE - 1); - loff_t to = from + len; - struct buffer_head *bh, *head; - struct xfs_mount *mp = XFS_I(inode)->i_mount; - /* - * The request pos offset might be 32 or 64 bit, this is all fine - * on 64-bit platform. However, for 64-bit pos request on 32-bit - * platform, the high 32-bit will be masked off if we evaluate the - * block_offset via (pos & PAGE_MASK) because the PAGE_MASK is - * 0xfffff000 as an unsigned long, hence the result is incorrect - * which could cause the following ASSERT failed in most cases. - * In order to avoid this, we can evaluate the block_offset of the - * start of the page by using shifts rather than masks the mismatch - * problem. + * We just need the method present so that open/fcntl allow direct I/O. */ - block_offset = (pos >> PAGE_SHIFT) << PAGE_SHIFT; - - ASSERT(block_offset + from == pos); - - head = page_buffers(page); - block_start = 0; - for (bh = head; bh != head || !block_start; - bh = bh->b_this_page, block_start = block_end, - block_offset += bh->b_size) { - block_end = block_start + bh->b_size; - - /* skip buffers before the write */ - if (block_end <= from) - continue; - - /* if the buffer is after the write, we're done */ - if (block_start >= to) - break; - - /* - * Process delalloc and unwritten buffers beyond EOF. We can - * encounter unwritten buffers in the event that a file has - * post-EOF unwritten extents and an extending write happens to - * fail (e.g., an unaligned write that also involves a delalloc - * to the same page). - */ - if (!buffer_delay(bh) && !buffer_unwritten(bh)) - continue; - - if (!xfs_mp_fail_writes(mp) && !buffer_new(bh) && - block_offset < i_size_read(inode)) - continue; - - if (buffer_delay(bh)) - xfs_vm_kill_delalloc_range(inode, block_offset, - block_offset + bh->b_size); - - /* - * This buffer does not contain data anymore. make sure anyone - * who finds it knows that for certain. - */ - clear_buffer_delay(bh); - clear_buffer_uptodate(bh); - clear_buffer_mapped(bh); - clear_buffer_new(bh); - clear_buffer_dirty(bh); - clear_buffer_unwritten(bh); - } - -} - -/* - * This used to call block_write_begin(), but it unlocks and releases the page - * on error, and we need that page to be able to punch stale delalloc blocks out - * on failure. hence we copy-n-waste it here and call xfs_vm_write_failed() at - * the appropriate point. - */ -STATIC int -xfs_vm_write_begin( - struct file *file, - struct address_space *mapping, - loff_t pos, - unsigned len, - unsigned flags, - struct page **pagep, - void **fsdata) -{ - pgoff_t index = pos >> PAGE_SHIFT; - struct page *page; - int status; - struct xfs_mount *mp = XFS_I(mapping->host)->i_mount; - - ASSERT(len <= PAGE_SIZE); - - page = grab_cache_page_write_begin(mapping, index, flags); - if (!page) - return -ENOMEM; - - status = __block_write_begin(page, pos, len, xfs_get_blocks); - if (xfs_mp_fail_writes(mp)) - status = -EIO; - if (unlikely(status)) { - struct inode *inode = mapping->host; - size_t isize = i_size_read(inode); - - xfs_vm_write_failed(inode, page, pos, len); - unlock_page(page); - - /* - * If the write is beyond EOF, we only want to kill blocks - * allocated in this write, not blocks that were previously - * written successfully. - */ - if (xfs_mp_fail_writes(mp)) - isize = 0; - if (pos + len > isize) { - ssize_t start = max_t(ssize_t, pos, isize); - - truncate_pagecache_range(inode, start, pos + len); - } - - put_page(page); - page = NULL; - } - - *pagep = page; - return status; -} - -/* - * On failure, we only need to kill delalloc blocks beyond EOF in the range of - * this specific write because they will never be written. Previous writes - * beyond EOF where block allocation succeeded do not need to be trashed, so - * only new blocks from this write should be trashed. For blocks within - * EOF, generic_write_end() zeros them so they are safe to leave alone and be - * written with all the other valid data. - */ -STATIC int -xfs_vm_write_end( - struct file *file, - struct address_space *mapping, - loff_t pos, - unsigned len, - unsigned copied, - struct page *page, - void *fsdata) -{ - int ret; - - ASSERT(len <= PAGE_SIZE); - - ret = generic_write_end(file, mapping, pos, len, copied, page, fsdata); - if (unlikely(ret < len)) { - struct inode *inode = mapping->host; - size_t isize = i_size_read(inode); - loff_t to = pos + len; - - if (to > isize) { - /* only kill blocks in this write beyond EOF */ - if (pos > isize) - isize = pos; - xfs_vm_kill_delalloc_range(inode, isize, to); - truncate_pagecache_range(inode, isize, to); - } - } - return ret; + return -EINVAL; } STATIC sector_t @@ -1748,8 +1514,6 @@ const struct address_space_operations xfs_address_space_operations = { .set_page_dirty = xfs_vm_set_page_dirty, .releasepage = xfs_vm_releasepage, .invalidatepage = xfs_vm_invalidatepage, - .write_begin = xfs_vm_write_begin, - .write_end = xfs_vm_write_end, .bmap = xfs_vm_bmap, .direct_IO = xfs_vm_direct_IO, .migratepage = buffer_migrate_page, diff --git a/fs/xfs/xfs_aops.h b/fs/xfs/xfs_aops.h index 814aab790713..bf2d9a141a73 100644 --- a/fs/xfs/xfs_aops.h +++ b/fs/xfs/xfs_aops.h @@ -60,6 +60,9 @@ int xfs_get_blocks_direct(struct inode *inode, sector_t offset, int xfs_get_blocks_dax_fault(struct inode *inode, sector_t offset, struct buffer_head *map_bh, int create); +int xfs_end_io_direct_write(struct kiocb *iocb, loff_t offset, + ssize_t size, void *private); + extern void xfs_count_page_state(struct page *, int *, int *); extern struct block_device *xfs_find_bdev_for_inode(struct inode *); diff --git a/fs/xfs/xfs_attr_inactive.c b/fs/xfs/xfs_attr_inactive.c index 55d214981ed2..be0b79d8900f 100644 --- a/fs/xfs/xfs_attr_inactive.c +++ b/fs/xfs/xfs_attr_inactive.c @@ -322,7 +322,7 @@ xfs_attr3_node_inactive( * Recurse (gasp!) through the attribute nodes until we find leaves. * We're doing a depth-first traversal in order to invalidate everything. */ -int +static int xfs_attr3_root_inactive( struct xfs_trans **trans, struct xfs_inode *dp) diff --git a/fs/xfs/xfs_attr_list.c b/fs/xfs/xfs_attr_list.c index d25f26b22ac9..25e76cd6c053 100644 --- a/fs/xfs/xfs_attr_list.c +++ b/fs/xfs/xfs_attr_list.c @@ -65,7 +65,7 @@ xfs_attr_shortform_compare(const void *a, const void *b) * we have to calculate each entries' hashvalue and sort them before * we can begin returning them to the user. */ -int +static int xfs_attr_shortform_list(xfs_attr_list_context_t *context) { attrlist_cursor_kern_t *cursor; diff --git a/fs/xfs/xfs_bmap_util.c b/fs/xfs/xfs_bmap_util.c index 586bb64e674b..cd4a850564f2 100644 --- a/fs/xfs/xfs_bmap_util.c +++ b/fs/xfs/xfs_bmap_util.c @@ -79,6 +79,23 @@ xfs_zero_extent( GFP_NOFS, true); } +/* Sort bmap items by AG. */ +static int +xfs_bmap_free_list_cmp( + void *priv, + struct list_head *a, + struct list_head *b) +{ + struct xfs_mount *mp = priv; + struct xfs_bmap_free_item *ra; + struct xfs_bmap_free_item *rb; + + ra = container_of(a, struct xfs_bmap_free_item, xbfi_list); + rb = container_of(b, struct xfs_bmap_free_item, xbfi_list); + return XFS_FSB_TO_AGNO(mp, ra->xbfi_startblock) - + XFS_FSB_TO_AGNO(mp, rb->xbfi_startblock); +} + /* * Routine to be called at transaction's end by xfs_bmapi, xfs_bunmapi * caller. Frees all the extents that need freeing, which must be done @@ -99,14 +116,15 @@ xfs_bmap_finish( int error; /* error return value */ int committed;/* xact committed or not */ struct xfs_bmap_free_item *free; /* free extent item */ - struct xfs_bmap_free_item *next; /* next item on free list */ ASSERT((*tp)->t_flags & XFS_TRANS_PERM_LOG_RES); if (flist->xbf_count == 0) return 0; + list_sort((*tp)->t_mountp, &flist->xbf_flist, xfs_bmap_free_list_cmp); + efi = xfs_trans_get_efi(*tp, flist->xbf_count); - for (free = flist->xbf_first; free; free = free->xbfi_next) + list_for_each_entry(free, &flist->xbf_flist, xbfi_list) xfs_trans_log_efi_extent(*tp, efi, free->xbfi_startblock, free->xbfi_blockcount); @@ -125,9 +143,7 @@ xfs_bmap_finish( if (committed) { xfs_efi_release(efi); xfs_force_shutdown((*tp)->t_mountp, - (error == -EFSCORRUPTED) ? - SHUTDOWN_CORRUPT_INCORE : - SHUTDOWN_META_IO_ERROR); + SHUTDOWN_META_IO_ERROR); } return error; } @@ -138,15 +154,15 @@ xfs_bmap_finish( * on error. */ efd = xfs_trans_get_efd(*tp, efi, flist->xbf_count); - for (free = flist->xbf_first; free != NULL; free = next) { - next = free->xbfi_next; - + while (!list_empty(&flist->xbf_flist)) { + free = list_first_entry(&flist->xbf_flist, + struct xfs_bmap_free_item, xbfi_list); error = xfs_trans_free_extent(*tp, efd, free->xbfi_startblock, free->xbfi_blockcount); if (error) return error; - xfs_bmap_del_free(flist, NULL, free); + xfs_bmap_del_free(flist, free); } return 0; @@ -409,7 +425,7 @@ xfs_bmap_count_tree( /* * Count fsblocks of the given fork. */ -int /* error */ +static int /* error */ xfs_bmap_count_blocks( xfs_trans_t *tp, /* transaction pointer */ xfs_inode_t *ip, /* incore inode */ @@ -799,7 +815,7 @@ xfs_bmap_punch_delalloc_range( if (error) break; - ASSERT(!flist.xbf_count && !flist.xbf_first); + ASSERT(!flist.xbf_count && list_empty(&flist.xbf_flist)); next_block: start_fsb++; remaining--; @@ -1089,99 +1105,120 @@ error1: /* Just cancel transaction */ return error; } -/* - * Zero file bytes between startoff and endoff inclusive. - * The iolock is held exclusive and no blocks are buffered. - * - * This function is used by xfs_free_file_space() to zero - * partial blocks when the range to free is not block aligned. - * When unreserving space with boundaries that are not block - * aligned we round up the start and round down the end - * boundaries and then use this function to zero the parts of - * the blocks that got dropped during the rounding. - */ -STATIC int -xfs_zero_remaining_bytes( - xfs_inode_t *ip, - xfs_off_t startoff, - xfs_off_t endoff) +static int +xfs_unmap_extent( + struct xfs_inode *ip, + xfs_fileoff_t startoffset_fsb, + xfs_filblks_t len_fsb, + int *done) { - xfs_bmbt_irec_t imap; - xfs_fileoff_t offset_fsb; - xfs_off_t lastoffset; - xfs_off_t offset; - xfs_buf_t *bp; - xfs_mount_t *mp = ip->i_mount; - int nimap; - int error = 0; + struct xfs_mount *mp = ip->i_mount; + struct xfs_trans *tp; + struct xfs_bmap_free free_list; + xfs_fsblock_t firstfsb; + uint resblks = XFS_DIOSTRAT_SPACE_RES(mp, 0); + int error; - /* - * Avoid doing I/O beyond eof - it's not necessary - * since nothing can read beyond eof. The space will - * be zeroed when the file is extended anyway. - */ - if (startoff >= XFS_ISIZE(ip)) - return 0; + error = xfs_trans_alloc(mp, &M_RES(mp)->tr_write, resblks, 0, 0, &tp); + if (error) { + ASSERT(error == -ENOSPC || XFS_FORCED_SHUTDOWN(mp)); + return error; + } - if (endoff > XFS_ISIZE(ip)) - endoff = XFS_ISIZE(ip); + xfs_ilock(ip, XFS_ILOCK_EXCL); + error = xfs_trans_reserve_quota(tp, mp, ip->i_udquot, ip->i_gdquot, + ip->i_pdquot, resblks, 0, XFS_QMOPT_RES_REGBLKS); + if (error) + goto out_trans_cancel; - for (offset = startoff; offset <= endoff; offset = lastoffset + 1) { - uint lock_mode; + xfs_trans_ijoin(tp, ip, 0); - offset_fsb = XFS_B_TO_FSBT(mp, offset); - nimap = 1; + xfs_bmap_init(&free_list, &firstfsb); + error = xfs_bunmapi(tp, ip, startoffset_fsb, len_fsb, 0, 2, &firstfsb, + &free_list, done); + if (error) + goto out_bmap_cancel; - lock_mode = xfs_ilock_data_map_shared(ip); - error = xfs_bmapi_read(ip, offset_fsb, 1, &imap, &nimap, 0); - xfs_iunlock(ip, lock_mode); + error = xfs_bmap_finish(&tp, &free_list, NULL); + if (error) + goto out_bmap_cancel; - if (error || nimap < 1) - break; - ASSERT(imap.br_blockcount >= 1); - ASSERT(imap.br_startoff == offset_fsb); - ASSERT(imap.br_startblock != DELAYSTARTBLOCK); + error = xfs_trans_commit(tp); +out_unlock: + xfs_iunlock(ip, XFS_ILOCK_EXCL); + return error; - if (imap.br_startblock == HOLESTARTBLOCK || - imap.br_state == XFS_EXT_UNWRITTEN) { - /* skip the entire extent */ - lastoffset = XFS_FSB_TO_B(mp, imap.br_startoff + - imap.br_blockcount) - 1; - continue; - } +out_bmap_cancel: + xfs_bmap_cancel(&free_list); +out_trans_cancel: + xfs_trans_cancel(tp); + goto out_unlock; +} - lastoffset = XFS_FSB_TO_B(mp, imap.br_startoff + 1) - 1; - if (lastoffset > endoff) - lastoffset = endoff; +static int +xfs_adjust_extent_unmap_boundaries( + struct xfs_inode *ip, + xfs_fileoff_t *startoffset_fsb, + xfs_fileoff_t *endoffset_fsb) +{ + struct xfs_mount *mp = ip->i_mount; + struct xfs_bmbt_irec imap; + int nimap, error; + xfs_extlen_t mod = 0; - /* DAX can just zero the backing device directly */ - if (IS_DAX(VFS_I(ip))) { - error = dax_zero_page_range(VFS_I(ip), offset, - lastoffset - offset + 1, - xfs_get_blocks_direct); - if (error) - return error; - continue; - } + nimap = 1; + error = xfs_bmapi_read(ip, *startoffset_fsb, 1, &imap, &nimap, 0); + if (error) + return error; - error = xfs_buf_read_uncached(XFS_IS_REALTIME_INODE(ip) ? - mp->m_rtdev_targp : mp->m_ddev_targp, - xfs_fsb_to_db(ip, imap.br_startblock), - BTOBB(mp->m_sb.sb_blocksize), - 0, &bp, NULL); - if (error) - return error; + if (nimap && imap.br_startblock != HOLESTARTBLOCK) { + xfs_daddr_t block; - memset(bp->b_addr + - (offset - XFS_FSB_TO_B(mp, imap.br_startoff)), - 0, lastoffset - offset + 1); + ASSERT(imap.br_startblock != DELAYSTARTBLOCK); + block = imap.br_startblock; + mod = do_div(block, mp->m_sb.sb_rextsize); + if (mod) + *startoffset_fsb += mp->m_sb.sb_rextsize - mod; + } - error = xfs_bwrite(bp); - xfs_buf_relse(bp); - if (error) - return error; + nimap = 1; + error = xfs_bmapi_read(ip, *endoffset_fsb - 1, 1, &imap, &nimap, 0); + if (error) + return error; + + if (nimap && imap.br_startblock != HOLESTARTBLOCK) { + ASSERT(imap.br_startblock != DELAYSTARTBLOCK); + mod++; + if (mod && mod != mp->m_sb.sb_rextsize) + *endoffset_fsb -= mod; } - return error; + + return 0; +} + +static int +xfs_flush_unmap_range( + struct xfs_inode *ip, + xfs_off_t offset, + xfs_off_t len) +{ + struct xfs_mount *mp = ip->i_mount; + struct inode *inode = VFS_I(ip); + xfs_off_t rounding, start, end; + int error; + + /* wait for the completion of any pending DIOs */ + inode_dio_wait(inode); + + rounding = max_t(xfs_off_t, 1 << mp->m_sb.sb_blocklog, PAGE_SIZE); + start = round_down(offset, rounding); + end = round_up(offset + len, rounding) - 1; + + error = filemap_write_and_wait_range(inode->i_mapping, start, end); + if (error) + return error; + truncate_pagecache_range(inode, start, end); + return 0; } int @@ -1190,24 +1227,10 @@ xfs_free_file_space( xfs_off_t offset, xfs_off_t len) { - int done; - xfs_fileoff_t endoffset_fsb; - int error; - xfs_fsblock_t firstfsb; - xfs_bmap_free_t free_list; - xfs_bmbt_irec_t imap; - xfs_off_t ioffset; - xfs_off_t iendoffset; - xfs_extlen_t mod=0; - xfs_mount_t *mp; - int nimap; - uint resblks; - xfs_off_t rounding; - int rt; + struct xfs_mount *mp = ip->i_mount; xfs_fileoff_t startoffset_fsb; - xfs_trans_t *tp; - - mp = ip->i_mount; + xfs_fileoff_t endoffset_fsb; + int done = 0, error; trace_xfs_free_file_space(ip); @@ -1215,135 +1238,45 @@ xfs_free_file_space( if (error) return error; - error = 0; if (len <= 0) /* if nothing being freed */ - return error; - rt = XFS_IS_REALTIME_INODE(ip); - startoffset_fsb = XFS_B_TO_FSB(mp, offset); - endoffset_fsb = XFS_B_TO_FSBT(mp, offset + len); - - /* wait for the completion of any pending DIOs */ - inode_dio_wait(VFS_I(ip)); + return 0; - rounding = max_t(xfs_off_t, 1 << mp->m_sb.sb_blocklog, PAGE_SIZE); - ioffset = round_down(offset, rounding); - iendoffset = round_up(offset + len, rounding) - 1; - error = filemap_write_and_wait_range(VFS_I(ip)->i_mapping, ioffset, - iendoffset); + error = xfs_flush_unmap_range(ip, offset, len); if (error) - goto out; - truncate_pagecache_range(VFS_I(ip), ioffset, iendoffset); + return error; + + startoffset_fsb = XFS_B_TO_FSB(mp, offset); + endoffset_fsb = XFS_B_TO_FSBT(mp, offset + len); /* - * Need to zero the stuff we're not freeing, on disk. - * If it's a realtime file & can't use unwritten extents then we - * actually need to zero the extent edges. Otherwise xfs_bunmapi - * will take care of it for us. + * Need to zero the stuff we're not freeing, on disk. If it's a RT file + * and we can't use unwritten extents then we actually need to ensure + * to zero the whole extent, otherwise we just need to take of block + * boundaries, and xfs_bunmapi will handle the rest. */ - if (rt && !xfs_sb_version_hasextflgbit(&mp->m_sb)) { - nimap = 1; - error = xfs_bmapi_read(ip, startoffset_fsb, 1, - &imap, &nimap, 0); - if (error) - goto out; - ASSERT(nimap == 0 || nimap == 1); - if (nimap && imap.br_startblock != HOLESTARTBLOCK) { - xfs_daddr_t block; - - ASSERT(imap.br_startblock != DELAYSTARTBLOCK); - block = imap.br_startblock; - mod = do_div(block, mp->m_sb.sb_rextsize); - if (mod) - startoffset_fsb += mp->m_sb.sb_rextsize - mod; - } - nimap = 1; - error = xfs_bmapi_read(ip, endoffset_fsb - 1, 1, - &imap, &nimap, 0); + if (XFS_IS_REALTIME_INODE(ip) && + !xfs_sb_version_hasextflgbit(&mp->m_sb)) { + error = xfs_adjust_extent_unmap_boundaries(ip, &startoffset_fsb, + &endoffset_fsb); if (error) - goto out; - ASSERT(nimap == 0 || nimap == 1); - if (nimap && imap.br_startblock != HOLESTARTBLOCK) { - ASSERT(imap.br_startblock != DELAYSTARTBLOCK); - mod++; - if (mod && (mod != mp->m_sb.sb_rextsize)) - endoffset_fsb -= mod; - } - } - if ((done = (endoffset_fsb <= startoffset_fsb))) - /* - * One contiguous piece to clear - */ - error = xfs_zero_remaining_bytes(ip, offset, offset + len - 1); - else { - /* - * Some full blocks, possibly two pieces to clear - */ - if (offset < XFS_FSB_TO_B(mp, startoffset_fsb)) - error = xfs_zero_remaining_bytes(ip, offset, - XFS_FSB_TO_B(mp, startoffset_fsb) - 1); - if (!error && - XFS_FSB_TO_B(mp, endoffset_fsb) < offset + len) - error = xfs_zero_remaining_bytes(ip, - XFS_FSB_TO_B(mp, endoffset_fsb), - offset + len - 1); + return error; } - /* - * free file space until done or until there is an error - */ - resblks = XFS_DIOSTRAT_SPACE_RES(mp, 0); - while (!error && !done) { - - /* - * allocate and setup the transaction. Allow this - * transaction to dip into the reserve blocks to ensure - * the freeing of the space succeeds at ENOSPC. - */ - error = xfs_trans_alloc(mp, &M_RES(mp)->tr_write, resblks, 0, 0, - &tp); - if (error) { - ASSERT(error == -ENOSPC || XFS_FORCED_SHUTDOWN(mp)); - break; + if (endoffset_fsb > startoffset_fsb) { + while (!done) { + error = xfs_unmap_extent(ip, startoffset_fsb, + endoffset_fsb - startoffset_fsb, &done); + if (error) + return error; } - xfs_ilock(ip, XFS_ILOCK_EXCL); - error = xfs_trans_reserve_quota(tp, mp, - ip->i_udquot, ip->i_gdquot, ip->i_pdquot, - resblks, 0, XFS_QMOPT_RES_REGBLKS); - if (error) - goto error1; - - xfs_trans_ijoin(tp, ip, 0); - - /* - * issue the bunmapi() call to free the blocks - */ - xfs_bmap_init(&free_list, &firstfsb); - error = xfs_bunmapi(tp, ip, startoffset_fsb, - endoffset_fsb - startoffset_fsb, - 0, 2, &firstfsb, &free_list, &done); - if (error) - goto error0; - - /* - * complete the transaction - */ - error = xfs_bmap_finish(&tp, &free_list, NULL); - if (error) - goto error0; - - error = xfs_trans_commit(tp); - xfs_iunlock(ip, XFS_ILOCK_EXCL); } - out: - return error; - - error0: - xfs_bmap_cancel(&free_list); - error1: - xfs_trans_cancel(tp); - xfs_iunlock(ip, XFS_ILOCK_EXCL); - goto out; + /* + * Now that we've unmap all full blocks we'll have to zero out any + * partial block at the beginning and/or end. xfs_zero_range is + * smart enough to skip any holes, including those we just created. + */ + return xfs_zero_range(ip, offset, len, NULL); } /* diff --git a/fs/xfs/xfs_bmap_util.h b/fs/xfs/xfs_bmap_util.h index af97d9a1dfb4..f20071432ca6 100644 --- a/fs/xfs/xfs_bmap_util.h +++ b/fs/xfs/xfs_bmap_util.h @@ -31,8 +31,6 @@ struct xfs_bmalloca; int xfs_bmap_rtalloc(struct xfs_bmalloca *ap); int xfs_bmap_eof(struct xfs_inode *ip, xfs_fileoff_t endoff, int whichfork, int *eof); -int xfs_bmap_count_blocks(struct xfs_trans *tp, struct xfs_inode *ip, - int whichfork, int *count); int xfs_bmap_punch_delalloc_range(struct xfs_inode *ip, xfs_fileoff_t start_fsb, xfs_fileoff_t length); @@ -43,7 +41,6 @@ int xfs_getbmap(struct xfs_inode *ip, struct getbmapx *bmv, /* functions in xfs_bmap.c that are only needed by xfs_bmap_util.c */ void xfs_bmap_del_free(struct xfs_bmap_free *flist, - struct xfs_bmap_free_item *prev, struct xfs_bmap_free_item *free); int xfs_bmap_extsize_align(struct xfs_mount *mp, struct xfs_bmbt_irec *gotp, struct xfs_bmbt_irec *prevp, xfs_extlen_t extsz, diff --git a/fs/xfs/xfs_buf.c b/fs/xfs/xfs_buf.c index a87a0d5477bd..47a318ce82e0 100644 --- a/fs/xfs/xfs_buf.c +++ b/fs/xfs/xfs_buf.c @@ -80,6 +80,47 @@ xfs_buf_vmap_len( } /* + * Bump the I/O in flight count on the buftarg if we haven't yet done so for + * this buffer. The count is incremented once per buffer (per hold cycle) + * because the corresponding decrement is deferred to buffer release. Buffers + * can undergo I/O multiple times in a hold-release cycle and per buffer I/O + * tracking adds unnecessary overhead. This is used for sychronization purposes + * with unmount (see xfs_wait_buftarg()), so all we really need is a count of + * in-flight buffers. + * + * Buffers that are never released (e.g., superblock, iclog buffers) must set + * the XBF_NO_IOACCT flag before I/O submission. Otherwise, the buftarg count + * never reaches zero and unmount hangs indefinitely. + */ +static inline void +xfs_buf_ioacct_inc( + struct xfs_buf *bp) +{ + if (bp->b_flags & (XBF_NO_IOACCT|_XBF_IN_FLIGHT)) + return; + + ASSERT(bp->b_flags & XBF_ASYNC); + bp->b_flags |= _XBF_IN_FLIGHT; + percpu_counter_inc(&bp->b_target->bt_io_count); +} + +/* + * Clear the in-flight state on a buffer about to be released to the LRU or + * freed and unaccount from the buftarg. + */ +static inline void +xfs_buf_ioacct_dec( + struct xfs_buf *bp) +{ + if (!(bp->b_flags & _XBF_IN_FLIGHT)) + return; + + ASSERT(bp->b_flags & XBF_ASYNC); + bp->b_flags &= ~_XBF_IN_FLIGHT; + percpu_counter_dec(&bp->b_target->bt_io_count); +} + +/* * When we mark a buffer stale, we remove the buffer from the LRU and clear the * b_lru_ref count so that the buffer is freed immediately when the buffer * reference count falls to zero. If the buffer is already on the LRU, we need @@ -102,6 +143,14 @@ xfs_buf_stale( */ bp->b_flags &= ~_XBF_DELWRI_Q; + /* + * Once the buffer is marked stale and unlocked, a subsequent lookup + * could reset b_flags. There is no guarantee that the buffer is + * unaccounted (released to LRU) before that occurs. Drop in-flight + * status now to preserve accounting consistency. + */ + xfs_buf_ioacct_dec(bp); + spin_lock(&bp->b_lock); atomic_set(&bp->b_lru_ref, 0); if (!(bp->b_state & XFS_BSTATE_DISPOSE) && @@ -815,7 +864,8 @@ xfs_buf_get_uncached( struct xfs_buf *bp; DEFINE_SINGLE_BUF_MAP(map, XFS_BUF_DADDR_NULL, numblks); - bp = _xfs_buf_alloc(target, &map, 1, 0); + /* flags might contain irrelevant bits, pass only what we care about */ + bp = _xfs_buf_alloc(target, &map, 1, flags & XBF_NO_IOACCT); if (unlikely(bp == NULL)) goto fail; @@ -866,63 +916,85 @@ xfs_buf_hold( } /* - * Releases a hold on the specified buffer. If the - * the hold count is 1, calls xfs_buf_free. + * Release a hold on the specified buffer. If the hold count is 1, the buffer is + * placed on LRU or freed (depending on b_lru_ref). */ void xfs_buf_rele( xfs_buf_t *bp) { struct xfs_perag *pag = bp->b_pag; + bool release; + bool freebuf = false; trace_xfs_buf_rele(bp, _RET_IP_); if (!pag) { ASSERT(list_empty(&bp->b_lru)); ASSERT(RB_EMPTY_NODE(&bp->b_rbnode)); - if (atomic_dec_and_test(&bp->b_hold)) + if (atomic_dec_and_test(&bp->b_hold)) { + xfs_buf_ioacct_dec(bp); xfs_buf_free(bp); + } return; } ASSERT(!RB_EMPTY_NODE(&bp->b_rbnode)); ASSERT(atomic_read(&bp->b_hold) > 0); - if (atomic_dec_and_lock(&bp->b_hold, &pag->pag_buf_lock)) { - spin_lock(&bp->b_lock); - if (!(bp->b_flags & XBF_STALE) && atomic_read(&bp->b_lru_ref)) { - /* - * If the buffer is added to the LRU take a new - * reference to the buffer for the LRU and clear the - * (now stale) dispose list state flag - */ - if (list_lru_add(&bp->b_target->bt_lru, &bp->b_lru)) { - bp->b_state &= ~XFS_BSTATE_DISPOSE; - atomic_inc(&bp->b_hold); - } - spin_unlock(&bp->b_lock); - spin_unlock(&pag->pag_buf_lock); - } else { - /* - * most of the time buffers will already be removed from - * the LRU, so optimise that case by checking for the - * XFS_BSTATE_DISPOSE flag indicating the last list the - * buffer was on was the disposal list - */ - if (!(bp->b_state & XFS_BSTATE_DISPOSE)) { - list_lru_del(&bp->b_target->bt_lru, &bp->b_lru); - } else { - ASSERT(list_empty(&bp->b_lru)); - } - spin_unlock(&bp->b_lock); - ASSERT(!(bp->b_flags & _XBF_DELWRI_Q)); - rb_erase(&bp->b_rbnode, &pag->pag_buf_tree); - spin_unlock(&pag->pag_buf_lock); - xfs_perag_put(pag); - xfs_buf_free(bp); + release = atomic_dec_and_lock(&bp->b_hold, &pag->pag_buf_lock); + spin_lock(&bp->b_lock); + if (!release) { + /* + * Drop the in-flight state if the buffer is already on the LRU + * and it holds the only reference. This is racy because we + * haven't acquired the pag lock, but the use of _XBF_IN_FLIGHT + * ensures the decrement occurs only once per-buf. + */ + if ((atomic_read(&bp->b_hold) == 1) && !list_empty(&bp->b_lru)) + xfs_buf_ioacct_dec(bp); + goto out_unlock; + } + + /* the last reference has been dropped ... */ + xfs_buf_ioacct_dec(bp); + if (!(bp->b_flags & XBF_STALE) && atomic_read(&bp->b_lru_ref)) { + /* + * If the buffer is added to the LRU take a new reference to the + * buffer for the LRU and clear the (now stale) dispose list + * state flag + */ + if (list_lru_add(&bp->b_target->bt_lru, &bp->b_lru)) { + bp->b_state &= ~XFS_BSTATE_DISPOSE; + atomic_inc(&bp->b_hold); + } + spin_unlock(&pag->pag_buf_lock); + } else { + /* + * most of the time buffers will already be removed from the + * LRU, so optimise that case by checking for the + * XFS_BSTATE_DISPOSE flag indicating the last list the buffer + * was on was the disposal list + */ + if (!(bp->b_state & XFS_BSTATE_DISPOSE)) { + list_lru_del(&bp->b_target->bt_lru, &bp->b_lru); + } else { + ASSERT(list_empty(&bp->b_lru)); } + + ASSERT(!(bp->b_flags & _XBF_DELWRI_Q)); + rb_erase(&bp->b_rbnode, &pag->pag_buf_tree); + spin_unlock(&pag->pag_buf_lock); + xfs_perag_put(pag); + freebuf = true; } + +out_unlock: + spin_unlock(&bp->b_lock); + + if (freebuf) + xfs_buf_free(bp); } @@ -944,10 +1016,12 @@ xfs_buf_trylock( int locked; locked = down_trylock(&bp->b_sema) == 0; - if (locked) + if (locked) { XB_SET_OWNER(bp); - - trace_xfs_buf_trylock(bp, _RET_IP_); + trace_xfs_buf_trylock(bp, _RET_IP_); + } else { + trace_xfs_buf_trylock_fail(bp, _RET_IP_); + } return locked; } @@ -1339,6 +1413,7 @@ xfs_buf_submit( * xfs_buf_ioend too early. */ atomic_set(&bp->b_io_remaining, 1); + xfs_buf_ioacct_inc(bp); _xfs_buf_ioapply(bp); /* @@ -1524,13 +1599,19 @@ xfs_wait_buftarg( int loop = 0; /* - * We need to flush the buffer workqueue to ensure that all IO - * completion processing is 100% done. Just waiting on buffer locks is - * not sufficient for async IO as the reference count held over IO is - * not released until after the buffer lock is dropped. Hence we need to - * ensure here that all reference counts have been dropped before we - * start walking the LRU list. + * First wait on the buftarg I/O count for all in-flight buffers to be + * released. This is critical as new buffers do not make the LRU until + * they are released. + * + * Next, flush the buffer workqueue to ensure all completion processing + * has finished. Just waiting on buffer locks is not sufficient for + * async IO as the reference count held over IO is not released until + * after the buffer lock is dropped. Hence we need to ensure here that + * all reference counts have been dropped before we start walking the + * LRU list. */ + while (percpu_counter_sum(&btp->bt_io_count)) + delay(100); drain_workqueue(btp->bt_mount->m_buf_workqueue); /* loop until there is nothing left on the lru list. */ @@ -1627,6 +1708,8 @@ xfs_free_buftarg( struct xfs_buftarg *btp) { 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); if (mp->m_flags & XFS_MOUNT_BARRIER) @@ -1691,6 +1774,9 @@ xfs_alloc_buftarg( if (list_lru_init(&btp->bt_lru)) goto error; + if (percpu_counter_init(&btp->bt_io_count, 0, GFP_KERNEL)) + goto error; + btp->bt_shrinker.count_objects = xfs_buftarg_shrink_count; btp->bt_shrinker.scan_objects = xfs_buftarg_shrink_scan; btp->bt_shrinker.seeks = DEFAULT_SEEKS; @@ -1774,18 +1860,33 @@ xfs_buf_cmp( return 0; } +/* + * submit buffers for write. + * + * When we have a large buffer list, we do not want to hold all the buffers + * locked while we block on the request queue waiting for IO dispatch. To avoid + * this problem, we lock and submit buffers in groups of 50, thereby minimising + * the lock hold times for lists which may contain thousands of objects. + * + * To do this, we sort the buffer list before we walk the list to lock and + * submit buffers, and we plug and unplug around each group of buffers we + * submit. + */ static int -__xfs_buf_delwri_submit( +xfs_buf_delwri_submit_buffers( struct list_head *buffer_list, - struct list_head *io_list, - bool wait) + struct list_head *wait_list) { - struct blk_plug plug; struct xfs_buf *bp, *n; + LIST_HEAD (submit_list); int pinned = 0; + struct blk_plug plug; + list_sort(NULL, buffer_list, xfs_buf_cmp); + + blk_start_plug(&plug); list_for_each_entry_safe(bp, n, buffer_list, b_list) { - if (!wait) { + if (!wait_list) { if (xfs_buf_ispinned(bp)) { pinned++; continue; @@ -1808,25 +1909,21 @@ __xfs_buf_delwri_submit( continue; } - list_move_tail(&bp->b_list, io_list); trace_xfs_buf_delwri_split(bp, _RET_IP_); - } - - list_sort(NULL, io_list, xfs_buf_cmp); - - blk_start_plug(&plug); - list_for_each_entry_safe(bp, n, io_list, b_list) { - bp->b_flags &= ~(_XBF_DELWRI_Q | XBF_ASYNC | XBF_WRITE_FAIL); - bp->b_flags |= XBF_WRITE | XBF_ASYNC; /* - * we do all Io submission async. This means if we need to wait - * for IO completion we need to take an extra reference so the - * buffer is still valid on the other side. + * We do all IO submission async. This means if we need + * to wait for IO completion we need to take an extra + * reference so the buffer is still valid on the other + * side. We need to move the buffer onto the io_list + * at this point so the caller can still access it. */ - if (wait) + bp->b_flags &= ~(_XBF_DELWRI_Q | XBF_WRITE_FAIL); + bp->b_flags |= XBF_WRITE | XBF_ASYNC; + if (wait_list) { xfs_buf_hold(bp); - else + list_move_tail(&bp->b_list, wait_list); + } else list_del_init(&bp->b_list); xfs_buf_submit(bp); @@ -1849,8 +1946,7 @@ int xfs_buf_delwri_submit_nowait( struct list_head *buffer_list) { - LIST_HEAD (io_list); - return __xfs_buf_delwri_submit(buffer_list, &io_list, false); + return xfs_buf_delwri_submit_buffers(buffer_list, NULL); } /* @@ -1865,15 +1961,15 @@ int xfs_buf_delwri_submit( struct list_head *buffer_list) { - LIST_HEAD (io_list); + LIST_HEAD (wait_list); int error = 0, error2; struct xfs_buf *bp; - __xfs_buf_delwri_submit(buffer_list, &io_list, true); + xfs_buf_delwri_submit_buffers(buffer_list, &wait_list); /* Wait for IO to complete. */ - while (!list_empty(&io_list)) { - bp = list_first_entry(&io_list, struct xfs_buf, b_list); + while (!list_empty(&wait_list)) { + bp = list_first_entry(&wait_list, struct xfs_buf, b_list); list_del_init(&bp->b_list); diff --git a/fs/xfs/xfs_buf.h b/fs/xfs/xfs_buf.h index 8bfb974f0772..1c2e52b2d926 100644 --- a/fs/xfs/xfs_buf.h +++ b/fs/xfs/xfs_buf.h @@ -43,6 +43,7 @@ typedef enum { #define XBF_READ (1 << 0) /* buffer intended for reading from device */ #define XBF_WRITE (1 << 1) /* buffer intended for writing to device */ #define XBF_READ_AHEAD (1 << 2) /* asynchronous read-ahead */ +#define XBF_NO_IOACCT (1 << 3) /* bypass I/O accounting (non-LRU bufs) */ #define XBF_ASYNC (1 << 4) /* initiator will not wait for completion */ #define XBF_DONE (1 << 5) /* all pages in the buffer uptodate */ #define XBF_STALE (1 << 6) /* buffer has been staled, do not find it */ @@ -62,6 +63,7 @@ typedef enum { #define _XBF_KMEM (1 << 21)/* backed by heap memory */ #define _XBF_DELWRI_Q (1 << 22)/* buffer on a delwri queue */ #define _XBF_COMPOUND (1 << 23)/* compound buffer */ +#define _XBF_IN_FLIGHT (1 << 25) /* I/O in flight, for accounting purposes */ typedef unsigned int xfs_buf_flags_t; @@ -81,7 +83,8 @@ typedef unsigned int xfs_buf_flags_t; { _XBF_PAGES, "PAGES" }, \ { _XBF_KMEM, "KMEM" }, \ { _XBF_DELWRI_Q, "DELWRI_Q" }, \ - { _XBF_COMPOUND, "COMPOUND" } + { _XBF_COMPOUND, "COMPOUND" }, \ + { _XBF_IN_FLIGHT, "IN_FLIGHT" } /* @@ -115,6 +118,8 @@ typedef struct xfs_buftarg { /* LRU control structures */ struct shrinker bt_shrinker; struct list_lru bt_lru; + + struct percpu_counter bt_io_count; } xfs_buftarg_t; struct xfs_buf; diff --git a/fs/xfs/xfs_buf_item.c b/fs/xfs/xfs_buf_item.c index 34257992934c..e455f9098d49 100644 --- a/fs/xfs/xfs_buf_item.c +++ b/fs/xfs/xfs_buf_item.c @@ -359,7 +359,7 @@ xfs_buf_item_format( for (i = 0; i < bip->bli_format_count; i++) { xfs_buf_item_format_segment(bip, lv, &vecp, offset, &bip->bli_formats[i]); - offset += bp->b_maps[i].bm_len; + offset += BBTOB(bp->b_maps[i].bm_len); } /* @@ -915,20 +915,28 @@ xfs_buf_item_log( for (i = 0; i < bip->bli_format_count; i++) { if (start > last) break; - end = start + BBTOB(bp->b_maps[i].bm_len); + end = start + BBTOB(bp->b_maps[i].bm_len) - 1; + + /* skip to the map that includes the first byte to log */ if (first > end) { start += BBTOB(bp->b_maps[i].bm_len); continue; } + + /* + * Trim the range to this segment and mark it in the bitmap. + * Note that we must convert buffer offsets to segment relative + * offsets (e.g., the first byte of each segment is byte 0 of + * that segment). + */ if (first < start) first = start; if (end > last) end = last; - - xfs_buf_item_log_segment(first, end, + xfs_buf_item_log_segment(first - start, end - start, &bip->bli_formats[i].blf_data_map[0]); - start += bp->b_maps[i].bm_len; + start += BBTOB(bp->b_maps[i].bm_len); } } @@ -949,6 +957,7 @@ xfs_buf_item_free( xfs_buf_log_item_t *bip) { xfs_buf_item_free_format(bip); + kmem_free(bip->bli_item.li_lv_shadow); kmem_zone_free(xfs_buf_item_zone, bip); } @@ -1073,6 +1082,8 @@ xfs_buf_iodone_callback_error( trace_xfs_buf_item_iodone_async(bp, _RET_IP_); ASSERT(bp->b_iodone != NULL); + cfg = xfs_error_get_cfg(mp, XFS_ERR_METADATA, bp->b_error); + /* * If the write was asynchronous then no one will be looking for the * error. If this is the first failure of this type, clear the error @@ -1080,13 +1091,12 @@ xfs_buf_iodone_callback_error( * async write failure at least once, but we also need to set the buffer * up to behave correctly now for repeated failures. */ - if (!(bp->b_flags & (XBF_STALE|XBF_WRITE_FAIL)) || + if (!(bp->b_flags & (XBF_STALE | XBF_WRITE_FAIL)) || bp->b_last_error != bp->b_error) { - bp->b_flags |= (XBF_WRITE | XBF_ASYNC | - XBF_DONE | XBF_WRITE_FAIL); + bp->b_flags |= (XBF_WRITE | XBF_DONE | XBF_WRITE_FAIL); bp->b_last_error = bp->b_error; - bp->b_retries = 0; - bp->b_first_retry_time = jiffies; + if (cfg->retry_timeout && !bp->b_first_retry_time) + bp->b_first_retry_time = jiffies; xfs_buf_ioerror(bp, 0); xfs_buf_submit(bp); @@ -1097,7 +1107,6 @@ xfs_buf_iodone_callback_error( * Repeated failure on an async write. Take action according to the * error configuration we have been set up to use. */ - cfg = xfs_error_get_cfg(mp, XFS_ERR_METADATA, bp->b_error); if (cfg->max_retries != XFS_ERR_RETRY_FOREVER && ++bp->b_retries > cfg->max_retries) diff --git a/fs/xfs/xfs_dquot.c b/fs/xfs/xfs_dquot.c index e0646659ce16..ccb0811963b2 100644 --- a/fs/xfs/xfs_dquot.c +++ b/fs/xfs/xfs_dquot.c @@ -74,6 +74,7 @@ xfs_qm_dqdestroy( { ASSERT(list_empty(&dqp->q_lru)); + kmem_free(dqp->q_logitem.qli_item.li_lv_shadow); mutex_destroy(&dqp->q_qlock); XFS_STATS_DEC(dqp->q_mount, xs_qm_dquot); diff --git a/fs/xfs/xfs_dquot_item.c b/fs/xfs/xfs_dquot_item.c index 814cff94e78f..2c7a1629e064 100644 --- a/fs/xfs/xfs_dquot_item.c +++ b/fs/xfs/xfs_dquot_item.c @@ -370,6 +370,8 @@ xfs_qm_qoffend_logitem_committed( spin_lock(&ailp->xa_lock); xfs_trans_ail_delete(ailp, &qfs->qql_item, SHUTDOWN_LOG_IO_ERROR); + kmem_free(qfs->qql_item.li_lv_shadow); + kmem_free(lip->li_lv_shadow); kmem_free(qfs); kmem_free(qfe); return (xfs_lsn_t)-1; diff --git a/fs/xfs/xfs_error.c b/fs/xfs/xfs_error.c index 88693a98fac5..ed7ee4e8af73 100644 --- a/fs/xfs/xfs_error.c +++ b/fs/xfs/xfs_error.c @@ -55,12 +55,15 @@ xfs_error_test(int error_tag, int *fsidp, char *expression, } int -xfs_errortag_add(int error_tag, xfs_mount_t *mp) +xfs_errortag_add(unsigned int error_tag, xfs_mount_t *mp) { int i; int len; int64_t fsid; + if (error_tag >= XFS_ERRTAG_MAX) + return -EINVAL; + memcpy(&fsid, mp->m_fixedfsid, sizeof(xfs_fsid_t)); for (i = 0; i < XFS_NUM_INJECT_ERROR; i++) { diff --git a/fs/xfs/xfs_error.h b/fs/xfs/xfs_error.h index 4ed3042a0f16..2e4f67f68856 100644 --- a/fs/xfs/xfs_error.h +++ b/fs/xfs/xfs_error.h @@ -128,7 +128,7 @@ extern int xfs_error_test(int, int *, char *, int, char *, unsigned long); xfs_error_test((tag), (mp)->m_fixedfsid, "expr", __LINE__, __FILE__, \ (rf)))) -extern int xfs_errortag_add(int error_tag, struct xfs_mount *mp); +extern int xfs_errortag_add(unsigned int error_tag, struct xfs_mount *mp); extern int xfs_errortag_clearall(struct xfs_mount *mp, int loud); #else #define XFS_TEST_ERROR(expr, mp, tag, rf) (expr) diff --git a/fs/xfs/xfs_extfree_item.c b/fs/xfs/xfs_extfree_item.c index 4aa0153214f9..ab779460ecbf 100644 --- a/fs/xfs/xfs_extfree_item.c +++ b/fs/xfs/xfs_extfree_item.c @@ -40,6 +40,7 @@ void xfs_efi_item_free( struct xfs_efi_log_item *efip) { + kmem_free(efip->efi_item.li_lv_shadow); if (efip->efi_format.efi_nextents > XFS_EFI_MAX_FAST_EXTENTS) kmem_free(efip); else @@ -300,6 +301,7 @@ static inline struct xfs_efd_log_item *EFD_ITEM(struct xfs_log_item *lip) STATIC void xfs_efd_item_free(struct xfs_efd_log_item *efdp) { + kmem_free(efdp->efd_item.li_lv_shadow); if (efdp->efd_format.efd_nextents > XFS_EFD_MAX_FAST_EXTENTS) kmem_free(efdp); else diff --git a/fs/xfs/xfs_file.c b/fs/xfs/xfs_file.c index 47fc63295422..ed95e5bb04e6 100644 --- a/fs/xfs/xfs_file.c +++ b/fs/xfs/xfs_file.c @@ -37,6 +37,7 @@ #include "xfs_log.h" #include "xfs_icache.h" #include "xfs_pnfs.h" +#include "xfs_iomap.h" #include <linux/dcache.h> #include <linux/falloc.h> @@ -80,61 +81,17 @@ xfs_rw_ilock_demote( } /* - * xfs_iozero clears the specified range supplied via the page cache (except in - * the DAX case). Writes through the page cache will allocate blocks over holes, - * though the callers usually map the holes first and avoid them. If a block is - * not completely zeroed, then it will be read from disk before being partially - * zeroed. - * - * In the DAX case, we can just directly write to the underlying pages. This - * will not allocate blocks, but will avoid holes and unwritten extents and so - * not do unnecessary work. + * Clear the specified ranges to zero through either the pagecache or DAX. + * Holes and unwritten extents will be left as-is as they already are zeroed. */ int -xfs_iozero( - struct xfs_inode *ip, /* inode */ - loff_t pos, /* offset in file */ - size_t count) /* size of data to zero */ +xfs_zero_range( + struct xfs_inode *ip, + xfs_off_t pos, + xfs_off_t count, + bool *did_zero) { - struct page *page; - struct address_space *mapping; - int status = 0; - - - mapping = VFS_I(ip)->i_mapping; - do { - unsigned offset, bytes; - void *fsdata; - - offset = (pos & (PAGE_SIZE -1)); /* Within page */ - bytes = PAGE_SIZE - offset; - if (bytes > count) - bytes = count; - - if (IS_DAX(VFS_I(ip))) { - status = dax_zero_page_range(VFS_I(ip), pos, bytes, - xfs_get_blocks_direct); - if (status) - break; - } else { - status = pagecache_write_begin(NULL, mapping, pos, bytes, - AOP_FLAG_UNINTERRUPTIBLE, - &page, &fsdata); - if (status) - break; - - zero_user(page, offset, bytes); - - status = pagecache_write_end(NULL, mapping, pos, bytes, - bytes, page, fsdata); - WARN_ON(status <= 0); /* can't return less than zero! */ - status = 0; - } - pos += bytes; - count -= bytes; - } while (count); - - return status; + return iomap_zero_range(VFS_I(ip), pos, count, NULL, &xfs_iomap_ops); } int @@ -282,48 +239,35 @@ xfs_file_fsync( } STATIC ssize_t -xfs_file_read_iter( +xfs_file_dio_aio_read( struct kiocb *iocb, struct iov_iter *to) { - struct file *file = iocb->ki_filp; - struct inode *inode = file->f_mapping->host; + struct address_space *mapping = iocb->ki_filp->f_mapping; + struct inode *inode = mapping->host; struct xfs_inode *ip = XFS_I(inode); - struct xfs_mount *mp = ip->i_mount; - size_t size = iov_iter_count(to); + loff_t isize = i_size_read(inode); + size_t count = iov_iter_count(to); + struct iov_iter data; + struct xfs_buftarg *target; ssize_t ret = 0; - int ioflags = 0; - xfs_fsize_t n; - loff_t pos = iocb->ki_pos; - XFS_STATS_INC(mp, xs_read_calls); - - if (unlikely(iocb->ki_flags & IOCB_DIRECT)) - ioflags |= XFS_IO_ISDIRECT; - if (file->f_mode & FMODE_NOCMTIME) - ioflags |= XFS_IO_INVIS; - - if ((ioflags & XFS_IO_ISDIRECT) && !IS_DAX(inode)) { - xfs_buftarg_t *target = - XFS_IS_REALTIME_INODE(ip) ? - mp->m_rtdev_targp : mp->m_ddev_targp; - /* DIO must be aligned to device logical sector size */ - if ((pos | size) & target->bt_logical_sectormask) { - if (pos == i_size_read(inode)) - return 0; - return -EINVAL; - } - } + trace_xfs_file_direct_read(ip, count, iocb->ki_pos); - n = mp->m_super->s_maxbytes - pos; - if (n <= 0 || size == 0) - return 0; + if (!count) + return 0; /* skip atime */ - if (n < size) - size = n; + if (XFS_IS_REALTIME_INODE(ip)) + target = ip->i_mount->m_rtdev_targp; + else + target = ip->i_mount->m_ddev_targp; - if (XFS_FORCED_SHUTDOWN(mp)) - return -EIO; + /* DIO must be aligned to device logical sector size */ + if ((iocb->ki_pos | count) & target->bt_logical_sectormask) { + if (iocb->ki_pos == isize) + return 0; + return -EINVAL; + } /* * Locking is a bit tricky here. If we take an exclusive lock for direct @@ -336,7 +280,7 @@ xfs_file_read_iter( * serialisation. */ xfs_rw_ilock(ip, XFS_IOLOCK_SHARED); - if ((ioflags & XFS_IO_ISDIRECT) && inode->i_mapping->nrpages) { + if (mapping->nrpages) { xfs_rw_iunlock(ip, XFS_IOLOCK_SHARED); xfs_rw_ilock(ip, XFS_IOLOCK_EXCL); @@ -351,8 +295,8 @@ xfs_file_read_iter( * flush and reduce the chances of repeated iolock cycles going * forward. */ - if (inode->i_mapping->nrpages) { - ret = filemap_write_and_wait(VFS_I(ip)->i_mapping); + if (mapping->nrpages) { + ret = filemap_write_and_wait(mapping); if (ret) { xfs_rw_iunlock(ip, XFS_IOLOCK_EXCL); return ret; @@ -363,20 +307,95 @@ xfs_file_read_iter( * we fail to invalidate a page, but this should never * happen on XFS. Warn if it does fail. */ - ret = invalidate_inode_pages2(VFS_I(ip)->i_mapping); + ret = invalidate_inode_pages2(mapping); WARN_ON_ONCE(ret); ret = 0; } xfs_rw_ilock_demote(ip, XFS_IOLOCK_EXCL); } - trace_xfs_file_read(ip, size, pos, ioflags); + data = *to; + ret = __blockdev_direct_IO(iocb, inode, target->bt_bdev, &data, + xfs_get_blocks_direct, NULL, NULL, 0); + if (ret > 0) { + iocb->ki_pos += ret; + iov_iter_advance(to, ret); + } + xfs_rw_iunlock(ip, XFS_IOLOCK_SHARED); + file_accessed(iocb->ki_filp); + return ret; +} + +static noinline ssize_t +xfs_file_dax_read( + struct kiocb *iocb, + struct iov_iter *to) +{ + struct address_space *mapping = iocb->ki_filp->f_mapping; + struct inode *inode = mapping->host; + struct xfs_inode *ip = XFS_I(inode); + struct iov_iter data = *to; + size_t count = iov_iter_count(to); + ssize_t ret = 0; + + trace_xfs_file_dax_read(ip, count, iocb->ki_pos); + + if (!count) + return 0; /* skip atime */ + + xfs_rw_ilock(ip, XFS_IOLOCK_SHARED); + ret = dax_do_io(iocb, inode, &data, xfs_get_blocks_direct, NULL, 0); + if (ret > 0) { + iocb->ki_pos += ret; + iov_iter_advance(to, ret); + } + xfs_rw_iunlock(ip, XFS_IOLOCK_SHARED); + + file_accessed(iocb->ki_filp); + return ret; +} + +STATIC ssize_t +xfs_file_buffered_aio_read( + struct kiocb *iocb, + struct iov_iter *to) +{ + struct xfs_inode *ip = XFS_I(file_inode(iocb->ki_filp)); + ssize_t ret; + + trace_xfs_file_buffered_read(ip, iov_iter_count(to), iocb->ki_pos); + + xfs_rw_ilock(ip, XFS_IOLOCK_SHARED); ret = generic_file_read_iter(iocb, to); + xfs_rw_iunlock(ip, XFS_IOLOCK_SHARED); + + return ret; +} + +STATIC ssize_t +xfs_file_read_iter( + struct kiocb *iocb, + struct iov_iter *to) +{ + struct inode *inode = file_inode(iocb->ki_filp); + struct xfs_mount *mp = XFS_I(inode)->i_mount; + ssize_t ret = 0; + + XFS_STATS_INC(mp, xs_read_calls); + + if (XFS_FORCED_SHUTDOWN(mp)) + return -EIO; + + if (IS_DAX(inode)) + ret = xfs_file_dax_read(iocb, to); + else if (iocb->ki_flags & IOCB_DIRECT) + ret = xfs_file_dio_aio_read(iocb, to); + else + ret = xfs_file_buffered_aio_read(iocb, to); + if (ret > 0) XFS_STATS_ADD(mp, xs_read_bytes, ret); - - xfs_rw_iunlock(ip, XFS_IOLOCK_SHARED); return ret; } @@ -389,18 +408,14 @@ xfs_file_splice_read( unsigned int flags) { struct xfs_inode *ip = XFS_I(infilp->f_mapping->host); - int ioflags = 0; ssize_t ret; XFS_STATS_INC(ip->i_mount, xs_read_calls); - if (infilp->f_mode & FMODE_NOCMTIME) - ioflags |= XFS_IO_INVIS; - if (XFS_FORCED_SHUTDOWN(ip->i_mount)) return -EIO; - trace_xfs_file_splice_read(ip, count, *ppos, ioflags); + trace_xfs_file_splice_read(ip, count, *ppos); /* * DAX inodes cannot ues the page cache for splice, so we have to push @@ -424,49 +439,6 @@ out: } /* - * This routine is called to handle zeroing any space in the last block of the - * file that is beyond the EOF. We do this since the size is being increased - * without writing anything to that block and we don't want to read the - * garbage on the disk. - */ -STATIC int /* error (positive) */ -xfs_zero_last_block( - struct xfs_inode *ip, - xfs_fsize_t offset, - xfs_fsize_t isize, - bool *did_zeroing) -{ - struct xfs_mount *mp = ip->i_mount; - xfs_fileoff_t last_fsb = XFS_B_TO_FSBT(mp, isize); - int zero_offset = XFS_B_FSB_OFFSET(mp, isize); - int zero_len; - int nimaps = 1; - int error = 0; - struct xfs_bmbt_irec imap; - - xfs_ilock(ip, XFS_ILOCK_EXCL); - error = xfs_bmapi_read(ip, last_fsb, 1, &imap, &nimaps, 0); - xfs_iunlock(ip, XFS_ILOCK_EXCL); - if (error) - return error; - - ASSERT(nimaps > 0); - - /* - * If the block underlying isize is just a hole, then there - * is nothing to zero. - */ - if (imap.br_startblock == HOLESTARTBLOCK) - return 0; - - zero_len = mp->m_sb.sb_blocksize - zero_offset; - if (isize + zero_len > offset) - zero_len = offset - isize; - *did_zeroing = true; - return xfs_iozero(ip, isize, zero_len); -} - -/* * Zero any on disk space between the current EOF and the new, larger EOF. * * This handles the normal case of zeroing the remainder of the last block in @@ -484,94 +456,11 @@ xfs_zero_eof( xfs_fsize_t isize, /* current inode size */ bool *did_zeroing) { - struct xfs_mount *mp = ip->i_mount; - xfs_fileoff_t start_zero_fsb; - xfs_fileoff_t end_zero_fsb; - xfs_fileoff_t zero_count_fsb; - xfs_fileoff_t last_fsb; - xfs_fileoff_t zero_off; - xfs_fsize_t zero_len; - int nimaps; - int error = 0; - struct xfs_bmbt_irec imap; - ASSERT(xfs_isilocked(ip, XFS_IOLOCK_EXCL)); ASSERT(offset > isize); trace_xfs_zero_eof(ip, isize, offset - isize); - - /* - * First handle zeroing the block on which isize resides. - * - * We only zero a part of that block so it is handled specially. - */ - if (XFS_B_FSB_OFFSET(mp, isize) != 0) { - error = xfs_zero_last_block(ip, offset, isize, did_zeroing); - if (error) - return error; - } - - /* - * Calculate the range between the new size and the old where blocks - * needing to be zeroed may exist. - * - * To get the block where the last byte in the file currently resides, - * we need to subtract one from the size and truncate back to a block - * boundary. We subtract 1 in case the size is exactly on a block - * boundary. - */ - last_fsb = isize ? XFS_B_TO_FSBT(mp, isize - 1) : (xfs_fileoff_t)-1; - start_zero_fsb = XFS_B_TO_FSB(mp, (xfs_ufsize_t)isize); - end_zero_fsb = XFS_B_TO_FSBT(mp, offset - 1); - ASSERT((xfs_sfiloff_t)last_fsb < (xfs_sfiloff_t)start_zero_fsb); - if (last_fsb == end_zero_fsb) { - /* - * The size was only incremented on its last block. - * We took care of that above, so just return. - */ - return 0; - } - - ASSERT(start_zero_fsb <= end_zero_fsb); - while (start_zero_fsb <= end_zero_fsb) { - nimaps = 1; - zero_count_fsb = end_zero_fsb - start_zero_fsb + 1; - - xfs_ilock(ip, XFS_ILOCK_EXCL); - error = xfs_bmapi_read(ip, start_zero_fsb, zero_count_fsb, - &imap, &nimaps, 0); - xfs_iunlock(ip, XFS_ILOCK_EXCL); - if (error) - return error; - - ASSERT(nimaps > 0); - - if (imap.br_state == XFS_EXT_UNWRITTEN || - imap.br_startblock == HOLESTARTBLOCK) { - start_zero_fsb = imap.br_startoff + imap.br_blockcount; - ASSERT(start_zero_fsb <= (end_zero_fsb + 1)); - continue; - } - - /* - * There are blocks we need to zero. - */ - zero_off = XFS_FSB_TO_B(mp, start_zero_fsb); - zero_len = XFS_FSB_TO_B(mp, imap.br_blockcount); - - if ((zero_off + zero_len) > offset) - zero_len = offset - zero_off; - - error = xfs_iozero(ip, zero_off, zero_len); - if (error) - return error; - - *did_zeroing = true; - start_zero_fsb = imap.br_startoff + imap.br_blockcount; - ASSERT(start_zero_fsb <= (end_zero_fsb + 1)); - } - - return 0; + return xfs_zero_range(ip, isize, offset - isize, did_zeroing); } /* @@ -722,8 +611,7 @@ xfs_file_dio_aio_write( mp->m_rtdev_targp : mp->m_ddev_targp; /* DIO must be aligned to device logical sector size */ - if (!IS_DAX(inode) && - ((iocb->ki_pos | count) & target->bt_logical_sectormask)) + if ((iocb->ki_pos | count) & target->bt_logical_sectormask) return -EINVAL; /* "unaligned" here means not aligned to a filesystem block */ @@ -762,7 +650,7 @@ xfs_file_dio_aio_write( end = iocb->ki_pos + count - 1; /* - * See xfs_file_read_iter() for why we do a full-file flush here. + * See xfs_file_dio_aio_read() for why we do a full-file flush here. */ if (mapping->nrpages) { ret = filemap_write_and_wait(VFS_I(ip)->i_mapping); @@ -789,10 +677,12 @@ xfs_file_dio_aio_write( iolock = XFS_IOLOCK_SHARED; } - trace_xfs_file_direct_write(ip, count, iocb->ki_pos, 0); + trace_xfs_file_direct_write(ip, count, iocb->ki_pos); data = *from; - ret = mapping->a_ops->direct_IO(iocb, &data); + ret = __blockdev_direct_IO(iocb, inode, target->bt_bdev, &data, + xfs_get_blocks_direct, xfs_end_io_direct_write, + NULL, DIO_ASYNC_EXTEND); /* see generic_file_direct_write() for why this is necessary */ if (mapping->nrpages) { @@ -809,10 +699,70 @@ out: xfs_rw_iunlock(ip, iolock); /* - * No fallback to buffered IO on errors for XFS. DAX can result in - * partial writes, but direct IO will either complete fully or fail. + * No fallback to buffered IO on errors for XFS, direct IO will either + * complete fully or fail. */ - ASSERT(ret < 0 || ret == count || IS_DAX(VFS_I(ip))); + ASSERT(ret < 0 || ret == count); + return ret; +} + +static noinline ssize_t +xfs_file_dax_write( + struct kiocb *iocb, + struct iov_iter *from) +{ + struct address_space *mapping = iocb->ki_filp->f_mapping; + struct inode *inode = mapping->host; + struct xfs_inode *ip = XFS_I(inode); + struct xfs_mount *mp = ip->i_mount; + ssize_t ret = 0; + int unaligned_io = 0; + int iolock; + struct iov_iter data; + + /* "unaligned" here means not aligned to a filesystem block */ + if ((iocb->ki_pos & mp->m_blockmask) || + ((iocb->ki_pos + iov_iter_count(from)) & mp->m_blockmask)) { + unaligned_io = 1; + iolock = XFS_IOLOCK_EXCL; + } else if (mapping->nrpages) { + iolock = XFS_IOLOCK_EXCL; + } else { + iolock = XFS_IOLOCK_SHARED; + } + xfs_rw_ilock(ip, iolock); + + ret = xfs_file_aio_write_checks(iocb, from, &iolock); + if (ret) + goto out; + + /* + * Yes, even DAX files can have page cache attached to them: A zeroed + * page is inserted into the pagecache when we have to serve a write + * fault on a hole. It should never be dirtied and can simply be + * dropped from the pagecache once we get real data for the page. + */ + if (mapping->nrpages) { + ret = invalidate_inode_pages2(mapping); + WARN_ON_ONCE(ret); + } + + if (iolock == XFS_IOLOCK_EXCL && !unaligned_io) { + xfs_rw_ilock_demote(ip, XFS_IOLOCK_EXCL); + iolock = XFS_IOLOCK_SHARED; + } + + trace_xfs_file_dax_write(ip, iov_iter_count(from), iocb->ki_pos); + + data = *from; + ret = dax_do_io(iocb, inode, &data, xfs_get_blocks_direct, + xfs_end_io_direct_write, 0); + if (ret > 0) { + iocb->ki_pos += ret; + iov_iter_advance(from, ret); + } +out: + xfs_rw_iunlock(ip, iolock); return ret; } @@ -839,9 +789,8 @@ xfs_file_buffered_aio_write( current->backing_dev_info = inode_to_bdi(inode); write_retry: - trace_xfs_file_buffered_write(ip, iov_iter_count(from), - iocb->ki_pos, 0); - ret = generic_perform_write(file, from, iocb->ki_pos); + trace_xfs_file_buffered_write(ip, iov_iter_count(from), iocb->ki_pos); + ret = iomap_file_buffered_write(iocb, from, &xfs_iomap_ops); if (likely(ret >= 0)) iocb->ki_pos += ret; @@ -895,7 +844,9 @@ xfs_file_write_iter( if (XFS_FORCED_SHUTDOWN(ip->i_mount)) return -EIO; - if ((iocb->ki_flags & IOCB_DIRECT) || IS_DAX(inode)) + if (IS_DAX(inode)) + ret = xfs_file_dax_write(iocb, from); + else if (iocb->ki_flags & IOCB_DIRECT) ret = xfs_file_dio_aio_write(iocb, from); else ret = xfs_file_buffered_aio_write(iocb, from); @@ -1551,9 +1502,9 @@ xfs_filemap_page_mkwrite( xfs_ilock(XFS_I(inode), XFS_MMAPLOCK_SHARED); if (IS_DAX(inode)) { - ret = __dax_mkwrite(vma, vmf, xfs_get_blocks_dax_fault); + ret = dax_mkwrite(vma, vmf, xfs_get_blocks_dax_fault); } else { - ret = block_page_mkwrite(vma, vmf, xfs_get_blocks); + ret = iomap_page_mkwrite(vma, vmf, &xfs_iomap_ops); ret = block_page_mkwrite_return(ret); } @@ -1585,7 +1536,7 @@ xfs_filemap_fault( * changes to xfs_get_blocks_direct() to map unwritten extent * ioend for conversion on read-only mappings. */ - ret = __dax_fault(vma, vmf, xfs_get_blocks_dax_fault); + ret = dax_fault(vma, vmf, xfs_get_blocks_dax_fault); } else ret = filemap_fault(vma, vmf); xfs_iunlock(XFS_I(inode), XFS_MMAPLOCK_SHARED); @@ -1622,7 +1573,7 @@ xfs_filemap_pmd_fault( } xfs_ilock(XFS_I(inode), XFS_MMAPLOCK_SHARED); - ret = __dax_pmd_fault(vma, addr, pmd, flags, xfs_get_blocks_dax_fault); + ret = dax_pmd_fault(vma, addr, pmd, flags, xfs_get_blocks_dax_fault); xfs_iunlock(XFS_I(inode), XFS_MMAPLOCK_SHARED); if (flags & FAULT_FLAG_WRITE) diff --git a/fs/xfs/xfs_fsops.c b/fs/xfs/xfs_fsops.c index b4d75825ae37..7191c3878b4a 100644 --- a/fs/xfs/xfs_fsops.c +++ b/fs/xfs/xfs_fsops.c @@ -667,8 +667,11 @@ xfs_reserve_blocks( __uint64_t *inval, xfs_fsop_resblks_t *outval) { - __int64_t lcounter, delta, fdblks_delta; + __int64_t lcounter, delta; + __int64_t fdblks_delta = 0; __uint64_t request; + __int64_t free; + int error = 0; /* If inval is null, report current values and return */ if (inval == (__uint64_t *)NULL) { @@ -682,24 +685,23 @@ xfs_reserve_blocks( request = *inval; /* - * With per-cpu counters, this becomes an interesting - * problem. we needto work out if we are freeing or allocation - * blocks first, then we can do the modification as necessary. + * With per-cpu counters, this becomes an interesting problem. we need + * to work out if we are freeing or allocation blocks first, then we can + * do the modification as necessary. * - * We do this under the m_sb_lock so that if we are near - * ENOSPC, we will hold out any changes while we work out - * what to do. This means that the amount of free space can - * change while we do this, so we need to retry if we end up - * trying to reserve more space than is available. + * We do this under the m_sb_lock so that if we are near ENOSPC, we will + * hold out any changes while we work out what to do. This means that + * the amount of free space can change while we do this, so we need to + * retry if we end up trying to reserve more space than is available. */ -retry: spin_lock(&mp->m_sb_lock); /* * If our previous reservation was larger than the current value, - * then move any unused blocks back to the free pool. + * then move any unused blocks back to the free pool. Modify the resblks + * counters directly since we shouldn't have any problems unreserving + * space. */ - fdblks_delta = 0; if (mp->m_resblks > request) { lcounter = mp->m_resblks_avail - request; if (lcounter > 0) { /* release unused blocks */ @@ -707,54 +709,67 @@ retry: mp->m_resblks_avail -= lcounter; } mp->m_resblks = request; - } else { - __int64_t free; + if (fdblks_delta) { + spin_unlock(&mp->m_sb_lock); + error = xfs_mod_fdblocks(mp, fdblks_delta, 0); + spin_lock(&mp->m_sb_lock); + } + + goto out; + } + /* + * If the request is larger than the current reservation, reserve the + * blocks before we update the reserve counters. Sample m_fdblocks and + * perform a partial reservation if the request exceeds free space. + */ + error = -ENOSPC; + do { free = percpu_counter_sum(&mp->m_fdblocks) - XFS_ALLOC_SET_ASIDE(mp); if (!free) - goto out; /* ENOSPC and fdblks_delta = 0 */ + break; delta = request - mp->m_resblks; lcounter = free - delta; - if (lcounter < 0) { + if (lcounter < 0) /* We can't satisfy the request, just get what we can */ - mp->m_resblks += free; - mp->m_resblks_avail += free; - fdblks_delta = -free; - } else { - fdblks_delta = -delta; - mp->m_resblks = request; - mp->m_resblks_avail += delta; - } - } -out: - if (outval) { - outval->resblks = mp->m_resblks; - outval->resblks_avail = mp->m_resblks_avail; - } - spin_unlock(&mp->m_sb_lock); + fdblks_delta = free; + else + fdblks_delta = delta; - if (fdblks_delta) { /* - * If we are putting blocks back here, m_resblks_avail is - * already at its max so this will put it in the free pool. - * - * If we need space, we'll either succeed in getting it - * from the free block count or we'll get an enospc. If - * we get a ENOSPC, it means things changed while we were - * calculating fdblks_delta and so we should try again to - * see if there is anything left to reserve. + * We'll either succeed in getting space from the free block + * count or we'll get an ENOSPC. If we get a ENOSPC, it means + * things changed while we were calculating fdblks_delta and so + * we should try again to see if there is anything left to + * reserve. * * Don't set the reserved flag here - we don't want to reserve * the extra reserve blocks from the reserve..... */ - int error; - error = xfs_mod_fdblocks(mp, fdblks_delta, 0); - if (error == -ENOSPC) - goto retry; + spin_unlock(&mp->m_sb_lock); + error = xfs_mod_fdblocks(mp, -fdblks_delta, 0); + spin_lock(&mp->m_sb_lock); + } while (error == -ENOSPC); + + /* + * Update the reserve counters if blocks have been successfully + * allocated. + */ + if (!error && fdblks_delta) { + mp->m_resblks += fdblks_delta; + mp->m_resblks_avail += fdblks_delta; } - return 0; + +out: + if (outval) { + outval->resblks = mp->m_resblks; + outval->resblks_avail = mp->m_resblks_avail; + } + + spin_unlock(&mp->m_sb_lock); + return error; } int diff --git a/fs/xfs/xfs_icache.c b/fs/xfs/xfs_icache.c index 99ee6eee5e0b..fb39a66914dd 100644 --- a/fs/xfs/xfs_icache.c +++ b/fs/xfs/xfs_icache.c @@ -765,7 +765,7 @@ restart: * Background scanning to trim post-EOF preallocated space. This is queued * based on the 'speculative_prealloc_lifetime' tunable (5m by default). */ -STATIC void +void xfs_queue_eofblocks( struct xfs_mount *mp) { diff --git a/fs/xfs/xfs_icache.h b/fs/xfs/xfs_icache.h index 62f1f91c32cb..05bac99bef75 100644 --- a/fs/xfs/xfs_icache.h +++ b/fs/xfs/xfs_icache.h @@ -68,6 +68,7 @@ void xfs_inode_clear_eofblocks_tag(struct xfs_inode *ip); int xfs_icache_free_eofblocks(struct xfs_mount *, struct xfs_eofblocks *); int xfs_inode_free_quota_eofblocks(struct xfs_inode *ip); void xfs_eofblocks_worker(struct work_struct *); +void xfs_queue_eofblocks(struct xfs_mount *); int xfs_inode_ag_iterator(struct xfs_mount *mp, int (*execute)(struct xfs_inode *ip, int flags, void *args), diff --git a/fs/xfs/xfs_inode.c b/fs/xfs/xfs_inode.c index ee6799e0476f..8825bcfd314c 100644 --- a/fs/xfs/xfs_inode.c +++ b/fs/xfs/xfs_inode.c @@ -431,7 +431,7 @@ xfs_lock_inumorder(int lock_mode, int subclass) * lock more than one at a time, lockdep will report false positives saying we * have violated locking orders. */ -void +static void xfs_lock_inodes( xfs_inode_t **ips, int inodes, @@ -667,14 +667,6 @@ xfs_ip2xflags( return _xfs_dic2xflags(dic->di_flags, dic->di_flags2, XFS_IFORK_Q(ip)); } -uint -xfs_dic2xflags( - struct xfs_dinode *dip) -{ - return _xfs_dic2xflags(be16_to_cpu(dip->di_flags), - be64_to_cpu(dip->di_flags2), XFS_DFORK_Q(dip)); -} - /* * Lookups up an inode from "name". If ci_name is not NULL, then a CI match * is allowed, otherwise it has to be an exact match. If a CI match is found, @@ -748,7 +740,7 @@ out_unlock: * are not linked into the directory structure - they are attached * directly to the superblock - and so have no parent. */ -int +static int xfs_ialloc( xfs_trans_t *tp, xfs_inode_t *pip, @@ -1085,7 +1077,7 @@ xfs_dir_ialloc( * link count to go to zero, move the inode to AGI unlinked list so that it can * be freed when the last active reference goes away via xfs_inactive(). */ -int /* error */ +static int /* error */ xfs_droplink( xfs_trans_t *tp, xfs_inode_t *ip) @@ -1104,7 +1096,7 @@ xfs_droplink( /* * Increment the link count on an inode & log the change. */ -int +static int xfs_bumplink( xfs_trans_t *tp, xfs_inode_t *ip) diff --git a/fs/xfs/xfs_inode.h b/fs/xfs/xfs_inode.h index e52d7c7aeb5b..8eb78ec4a6e2 100644 --- a/fs/xfs/xfs_inode.h +++ b/fs/xfs/xfs_inode.h @@ -395,12 +395,8 @@ void xfs_ilock_demote(xfs_inode_t *, uint); int xfs_isilocked(xfs_inode_t *, uint); uint xfs_ilock_data_map_shared(struct xfs_inode *); uint xfs_ilock_attr_map_shared(struct xfs_inode *); -int xfs_ialloc(struct xfs_trans *, xfs_inode_t *, umode_t, - xfs_nlink_t, xfs_dev_t, prid_t, int, - struct xfs_buf **, xfs_inode_t **); uint xfs_ip2xflags(struct xfs_inode *); -uint xfs_dic2xflags(struct xfs_dinode *); int xfs_ifree(struct xfs_trans *, xfs_inode_t *, struct xfs_bmap_free *); int xfs_itruncate_extents(struct xfs_trans **, struct xfs_inode *, @@ -411,7 +407,6 @@ void xfs_iunpin_wait(xfs_inode_t *); #define xfs_ipincount(ip) ((unsigned int) atomic_read(&ip->i_pincount)) int xfs_iflush(struct xfs_inode *, struct xfs_buf **); -void xfs_lock_inodes(xfs_inode_t **, int, uint); void xfs_lock_two_inodes(xfs_inode_t *, xfs_inode_t *, uint); xfs_extlen_t xfs_get_extsz_hint(struct xfs_inode *ip); @@ -419,8 +414,6 @@ xfs_extlen_t xfs_get_extsz_hint(struct xfs_inode *ip); int xfs_dir_ialloc(struct xfs_trans **, struct xfs_inode *, umode_t, xfs_nlink_t, xfs_dev_t, prid_t, int, struct xfs_inode **, int *); -int xfs_droplink(struct xfs_trans *, struct xfs_inode *); -int xfs_bumplink(struct xfs_trans *, struct xfs_inode *); /* from xfs_file.c */ enum xfs_prealloc_flags { @@ -434,7 +427,8 @@ int xfs_update_prealloc_flags(struct xfs_inode *ip, enum xfs_prealloc_flags flags); int xfs_zero_eof(struct xfs_inode *ip, xfs_off_t offset, xfs_fsize_t isize, bool *did_zeroing); -int xfs_iozero(struct xfs_inode *ip, loff_t pos, size_t count); +int xfs_zero_range(struct xfs_inode *ip, xfs_off_t pos, xfs_off_t count, + bool *did_zero); loff_t __xfs_seek_hole_data(struct inode *inode, loff_t start, loff_t eof, int whence); @@ -479,14 +473,4 @@ do { \ extern struct kmem_zone *xfs_inode_zone; -/* - * Flags for read/write calls - */ -#define XFS_IO_ISDIRECT 0x00001 /* bypass page cache */ -#define XFS_IO_INVIS 0x00002 /* don't update inode timestamps */ - -#define XFS_IO_FLAGS \ - { XFS_IO_ISDIRECT, "DIRECT" }, \ - { XFS_IO_INVIS, "INVIS"} - #endif /* __XFS_INODE_H__ */ diff --git a/fs/xfs/xfs_inode_item.c b/fs/xfs/xfs_inode_item.c index a1b07612224c..892c2aced207 100644 --- a/fs/xfs/xfs_inode_item.c +++ b/fs/xfs/xfs_inode_item.c @@ -651,6 +651,7 @@ void xfs_inode_item_destroy( xfs_inode_t *ip) { + kmem_free(ip->i_itemp->ili_item.li_lv_shadow); kmem_zone_free(xfs_ili_zone, ip->i_itemp); } diff --git a/fs/xfs/xfs_ioctl.c b/fs/xfs/xfs_ioctl.c index 63a6ff2cfc68..9a7c87809d3b 100644 --- a/fs/xfs/xfs_ioctl.c +++ b/fs/xfs/xfs_ioctl.c @@ -595,13 +595,12 @@ xfs_attrmulti_by_handle( int xfs_ioc_space( - struct xfs_inode *ip, - struct inode *inode, struct file *filp, - int ioflags, unsigned int cmd, xfs_flock64_t *bf) { + struct inode *inode = file_inode(filp); + struct xfs_inode *ip = XFS_I(inode); struct iattr iattr; enum xfs_prealloc_flags flags = 0; uint iolock = XFS_IOLOCK_EXCL; @@ -626,7 +625,7 @@ xfs_ioc_space( if (filp->f_flags & O_DSYNC) flags |= XFS_PREALLOC_SYNC; - if (ioflags & XFS_IO_INVIS) + if (filp->f_mode & FMODE_NOCMTIME) flags |= XFS_PREALLOC_INVISIBLE; error = mnt_want_write_file(filp); @@ -1464,8 +1463,7 @@ xfs_getbmap_format(void **ap, struct getbmapx *bmv, int *full) STATIC int xfs_ioc_getbmap( - struct xfs_inode *ip, - int ioflags, + struct file *file, unsigned int cmd, void __user *arg) { @@ -1479,10 +1477,10 @@ xfs_ioc_getbmap( return -EINVAL; bmx.bmv_iflags = (cmd == XFS_IOC_GETBMAPA ? BMV_IF_ATTRFORK : 0); - if (ioflags & XFS_IO_INVIS) + if (file->f_mode & FMODE_NOCMTIME) bmx.bmv_iflags |= BMV_IF_NO_DMAPI_READ; - error = xfs_getbmap(ip, &bmx, xfs_getbmap_format, + error = xfs_getbmap(XFS_I(file_inode(file)), &bmx, xfs_getbmap_format, (__force struct getbmap *)arg+1); if (error) return error; @@ -1575,6 +1573,11 @@ xfs_ioc_swapext( goto out_put_tmp_file; } + /* + * We need to ensure that the fds passed in point to XFS inodes + * before we cast and access them as XFS structures as we have no + * control over what the user passes us here. + */ if (f.file->f_op != &xfs_file_operations || tmp.file->f_op != &xfs_file_operations) { error = -EINVAL; @@ -1625,12 +1628,8 @@ xfs_file_ioctl( struct xfs_inode *ip = XFS_I(inode); struct xfs_mount *mp = ip->i_mount; void __user *arg = (void __user *)p; - int ioflags = 0; int error; - if (filp->f_mode & FMODE_NOCMTIME) - ioflags |= XFS_IO_INVIS; - trace_xfs_file_ioctl(ip); switch (cmd) { @@ -1649,7 +1648,7 @@ xfs_file_ioctl( if (copy_from_user(&bf, arg, sizeof(bf))) return -EFAULT; - return xfs_ioc_space(ip, inode, filp, ioflags, cmd, &bf); + return xfs_ioc_space(filp, cmd, &bf); } case XFS_IOC_DIOINFO: { struct dioattr da; @@ -1708,7 +1707,7 @@ xfs_file_ioctl( case XFS_IOC_GETBMAP: case XFS_IOC_GETBMAPA: - return xfs_ioc_getbmap(ip, ioflags, cmd, arg); + return xfs_ioc_getbmap(filp, cmd, arg); case XFS_IOC_GETBMAPX: return xfs_ioc_getbmapx(ip, arg); diff --git a/fs/xfs/xfs_ioctl.h b/fs/xfs/xfs_ioctl.h index 77c02c7900b6..8b52881bfd90 100644 --- a/fs/xfs/xfs_ioctl.h +++ b/fs/xfs/xfs_ioctl.h @@ -20,10 +20,7 @@ extern int xfs_ioc_space( - struct xfs_inode *ip, - struct inode *inode, struct file *filp, - int ioflags, unsigned int cmd, xfs_flock64_t *bf); diff --git a/fs/xfs/xfs_ioctl32.c b/fs/xfs/xfs_ioctl32.c index 1a05d8ae327d..321f57721b92 100644 --- a/fs/xfs/xfs_ioctl32.c +++ b/fs/xfs/xfs_ioctl32.c @@ -532,12 +532,8 @@ xfs_file_compat_ioctl( struct xfs_inode *ip = XFS_I(inode); struct xfs_mount *mp = ip->i_mount; void __user *arg = (void __user *)p; - int ioflags = 0; int error; - if (filp->f_mode & FMODE_NOCMTIME) - ioflags |= XFS_IO_INVIS; - trace_xfs_file_compat_ioctl(ip); switch (cmd) { @@ -589,7 +585,7 @@ xfs_file_compat_ioctl( if (xfs_compat_flock64_copyin(&bf, arg)) return -EFAULT; cmd = _NATIVE_IOC(cmd, struct xfs_flock64); - return xfs_ioc_space(ip, inode, filp, ioflags, cmd, &bf); + return xfs_ioc_space(filp, cmd, &bf); } case XFS_IOC_FSGEOMETRY_V1_32: return xfs_compat_ioc_fsgeometry_v1(mp, arg); diff --git a/fs/xfs/xfs_iomap.c b/fs/xfs/xfs_iomap.c index 58391355a44d..620fc9120444 100644 --- a/fs/xfs/xfs_iomap.c +++ b/fs/xfs/xfs_iomap.c @@ -15,6 +15,7 @@ * along with this program; if not, write the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */ +#include <linux/iomap.h> #include "xfs.h" #include "xfs_fs.h" #include "xfs_shared.h" @@ -940,3 +941,173 @@ error_on_bmapi_transaction: xfs_iunlock(ip, XFS_ILOCK_EXCL); return error; } + +void +xfs_bmbt_to_iomap( + struct xfs_inode *ip, + struct iomap *iomap, + struct xfs_bmbt_irec *imap) +{ + struct xfs_mount *mp = ip->i_mount; + + if (imap->br_startblock == HOLESTARTBLOCK) { + iomap->blkno = IOMAP_NULL_BLOCK; + iomap->type = IOMAP_HOLE; + } else if (imap->br_startblock == DELAYSTARTBLOCK) { + iomap->blkno = IOMAP_NULL_BLOCK; + iomap->type = IOMAP_DELALLOC; + } else { + iomap->blkno = xfs_fsb_to_db(ip, imap->br_startblock); + if (imap->br_state == XFS_EXT_UNWRITTEN) + iomap->type = IOMAP_UNWRITTEN; + else + iomap->type = IOMAP_MAPPED; + } + iomap->offset = XFS_FSB_TO_B(mp, imap->br_startoff); + iomap->length = XFS_FSB_TO_B(mp, imap->br_blockcount); + iomap->bdev = xfs_find_bdev_for_inode(VFS_I(ip)); +} + +static inline bool imap_needs_alloc(struct xfs_bmbt_irec *imap, int nimaps) +{ + return !nimaps || + imap->br_startblock == HOLESTARTBLOCK || + imap->br_startblock == DELAYSTARTBLOCK; +} + +static int +xfs_file_iomap_begin( + struct inode *inode, + loff_t offset, + loff_t length, + unsigned flags, + struct iomap *iomap) +{ + struct xfs_inode *ip = XFS_I(inode); + struct xfs_mount *mp = ip->i_mount; + struct xfs_bmbt_irec imap; + xfs_fileoff_t offset_fsb, end_fsb; + int nimaps = 1, error = 0; + + if (XFS_FORCED_SHUTDOWN(mp)) + return -EIO; + + xfs_ilock(ip, XFS_ILOCK_EXCL); + + ASSERT(offset <= mp->m_super->s_maxbytes); + if ((xfs_fsize_t)offset + length > mp->m_super->s_maxbytes) + length = mp->m_super->s_maxbytes - offset; + offset_fsb = XFS_B_TO_FSBT(mp, offset); + end_fsb = XFS_B_TO_FSB(mp, offset + length); + + error = xfs_bmapi_read(ip, offset_fsb, end_fsb - offset_fsb, &imap, + &nimaps, XFS_BMAPI_ENTIRE); + if (error) { + xfs_iunlock(ip, XFS_ILOCK_EXCL); + return error; + } + + if ((flags & IOMAP_WRITE) && imap_needs_alloc(&imap, nimaps)) { + /* + * We cap the maximum length we map here to MAX_WRITEBACK_PAGES + * pages to keep the chunks of work done where somewhat symmetric + * with the work writeback does. This is a completely arbitrary + * number pulled out of thin air as a best guess for initial + * testing. + * + * Note that the values needs to be less than 32-bits wide until + * the lower level functions are updated. + */ + length = min_t(loff_t, length, 1024 * PAGE_SIZE); + if (xfs_get_extsz_hint(ip)) { + /* + * xfs_iomap_write_direct() expects the shared lock. It + * is unlocked on return. + */ + xfs_ilock_demote(ip, XFS_ILOCK_EXCL); + error = xfs_iomap_write_direct(ip, offset, length, &imap, + nimaps); + } else { + error = xfs_iomap_write_delay(ip, offset, length, &imap); + xfs_iunlock(ip, XFS_ILOCK_EXCL); + } + + if (error) + return error; + + trace_xfs_iomap_alloc(ip, offset, length, 0, &imap); + xfs_bmbt_to_iomap(ip, iomap, &imap); + } else if (nimaps) { + xfs_iunlock(ip, XFS_ILOCK_EXCL); + trace_xfs_iomap_found(ip, offset, length, 0, &imap); + xfs_bmbt_to_iomap(ip, iomap, &imap); + } else { + xfs_iunlock(ip, XFS_ILOCK_EXCL); + trace_xfs_iomap_not_found(ip, offset, length, 0, &imap); + iomap->blkno = IOMAP_NULL_BLOCK; + iomap->type = IOMAP_HOLE; + iomap->offset = offset; + iomap->length = length; + } + + return 0; +} + +static int +xfs_file_iomap_end_delalloc( + struct xfs_inode *ip, + loff_t offset, + loff_t length, + ssize_t written) +{ + struct xfs_mount *mp = ip->i_mount; + xfs_fileoff_t start_fsb; + xfs_fileoff_t end_fsb; + int error = 0; + + start_fsb = XFS_B_TO_FSB(mp, offset + written); + end_fsb = XFS_B_TO_FSB(mp, offset + length); + + /* + * Trim back delalloc blocks if we didn't manage to write the whole + * range reserved. + * + * We don't need to care about racing delalloc as we hold i_mutex + * across the reserve/allocate/unreserve calls. If there are delalloc + * blocks in the range, they are ours. + */ + if (start_fsb < end_fsb) { + xfs_ilock(ip, XFS_ILOCK_EXCL); + error = xfs_bmap_punch_delalloc_range(ip, start_fsb, + end_fsb - start_fsb); + xfs_iunlock(ip, XFS_ILOCK_EXCL); + + if (error && !XFS_FORCED_SHUTDOWN(mp)) { + xfs_alert(mp, "%s: unable to clean up ino %lld", + __func__, ip->i_ino); + return error; + } + } + + return 0; +} + +static int +xfs_file_iomap_end( + struct inode *inode, + loff_t offset, + loff_t length, + ssize_t written, + unsigned flags, + struct iomap *iomap) +{ + if ((flags & IOMAP_WRITE) && iomap->type == IOMAP_DELALLOC) + return xfs_file_iomap_end_delalloc(XFS_I(inode), offset, + length, written); + return 0; +} + +struct iomap_ops xfs_iomap_ops = { + .iomap_begin = xfs_file_iomap_begin, + .iomap_end = xfs_file_iomap_end, +}; diff --git a/fs/xfs/xfs_iomap.h b/fs/xfs/xfs_iomap.h index 8688e663d744..e066d045e2ff 100644 --- a/fs/xfs/xfs_iomap.h +++ b/fs/xfs/xfs_iomap.h @@ -18,6 +18,8 @@ #ifndef __XFS_IOMAP_H__ #define __XFS_IOMAP_H__ +#include <linux/iomap.h> + struct xfs_inode; struct xfs_bmbt_irec; @@ -29,4 +31,9 @@ int xfs_iomap_write_allocate(struct xfs_inode *, xfs_off_t, struct xfs_bmbt_irec *); int xfs_iomap_write_unwritten(struct xfs_inode *, xfs_off_t, xfs_off_t); +void xfs_bmbt_to_iomap(struct xfs_inode *, struct iomap *, + struct xfs_bmbt_irec *); + +extern struct iomap_ops xfs_iomap_ops; + #endif /* __XFS_IOMAP_H__*/ diff --git a/fs/xfs/xfs_iops.c b/fs/xfs/xfs_iops.c index c5d4eba6972e..ab820f84ed50 100644 --- a/fs/xfs/xfs_iops.c +++ b/fs/xfs/xfs_iops.c @@ -38,12 +38,13 @@ #include "xfs_dir2.h" #include "xfs_trans_space.h" #include "xfs_pnfs.h" +#include "xfs_iomap.h" #include <linux/capability.h> #include <linux/xattr.h> #include <linux/posix_acl.h> #include <linux/security.h> -#include <linux/fiemap.h> +#include <linux/iomap.h> #include <linux/slab.h> /* @@ -801,20 +802,30 @@ xfs_setattr_size( return error; /* + * Wait for all direct I/O to complete. + */ + inode_dio_wait(inode); + + /* * File data changes must be complete before we start the transaction to * modify the inode. This needs to be done before joining the inode to * the transaction because the inode cannot be unlocked once it is a * part of the transaction. * - * Start with zeroing any data block beyond EOF that we may expose on - * file extension. + * Start with zeroing any data beyond EOF that we may expose on file + * extension, or zeroing out the rest of the block on a downward + * truncate. */ if (newsize > oldsize) { error = xfs_zero_eof(ip, newsize, oldsize, &did_zeroing); - if (error) - return error; + } else { + error = iomap_truncate_page(inode, newsize, &did_zeroing, + &xfs_iomap_ops); } + if (error) + return error; + /* * We are going to log the inode size change in this transaction so * any previous writes that are beyond the on disk EOF and the new @@ -823,17 +834,14 @@ xfs_setattr_size( * problem. Note that this includes any block zeroing we did above; * otherwise those blocks may not be zeroed after a crash. */ - if (newsize > ip->i_d.di_size && - (oldsize != ip->i_d.di_size || did_zeroing)) { + if (did_zeroing || + (newsize > ip->i_d.di_size && oldsize != ip->i_d.di_size)) { error = filemap_write_and_wait_range(VFS_I(ip)->i_mapping, ip->i_d.di_size, newsize); if (error) return error; } - /* Now wait for all direct I/O to complete. */ - inode_dio_wait(inode); - /* * We've already locked out new page faults, so now we can safely remove * pages from the page cache knowing they won't get refaulted until we @@ -851,13 +859,6 @@ xfs_setattr_size( * to hope that the caller sees ENOMEM and retries the truncate * operation. */ - if (IS_DAX(inode)) - error = dax_truncate_page(inode, newsize, xfs_get_blocks_direct); - else - error = block_truncate_page(inode->i_mapping, newsize, - xfs_get_blocks); - if (error) - return error; truncate_setsize(inode, newsize); error = xfs_trans_alloc(mp, &M_RES(mp)->tr_itruncate, 0, 0, 0, &tp); @@ -998,51 +999,6 @@ xfs_vn_update_time( return xfs_trans_commit(tp); } -#define XFS_FIEMAP_FLAGS (FIEMAP_FLAG_SYNC|FIEMAP_FLAG_XATTR) - -/* - * Call fiemap helper to fill in user data. - * Returns positive errors to xfs_getbmap. - */ -STATIC int -xfs_fiemap_format( - void **arg, - struct getbmapx *bmv, - int *full) -{ - int error; - struct fiemap_extent_info *fieinfo = *arg; - u32 fiemap_flags = 0; - u64 logical, physical, length; - - /* Do nothing for a hole */ - if (bmv->bmv_block == -1LL) - return 0; - - logical = BBTOB(bmv->bmv_offset); - physical = BBTOB(bmv->bmv_block); - length = BBTOB(bmv->bmv_length); - - if (bmv->bmv_oflags & BMV_OF_PREALLOC) - fiemap_flags |= FIEMAP_EXTENT_UNWRITTEN; - else if (bmv->bmv_oflags & BMV_OF_DELALLOC) { - fiemap_flags |= (FIEMAP_EXTENT_DELALLOC | - FIEMAP_EXTENT_UNKNOWN); - physical = 0; /* no block yet */ - } - if (bmv->bmv_oflags & BMV_OF_LAST) - fiemap_flags |= FIEMAP_EXTENT_LAST; - - error = fiemap_fill_next_extent(fieinfo, logical, physical, - length, fiemap_flags); - if (error > 0) { - error = 0; - *full = 1; /* user array now full */ - } - - return error; -} - STATIC int xfs_vn_fiemap( struct inode *inode, @@ -1050,38 +1006,13 @@ xfs_vn_fiemap( u64 start, u64 length) { - xfs_inode_t *ip = XFS_I(inode); - struct getbmapx bm; int error; - error = fiemap_check_flags(fieinfo, XFS_FIEMAP_FLAGS); - if (error) - return error; - - /* Set up bmap header for xfs internal routine */ - bm.bmv_offset = BTOBBT(start); - /* Special case for whole file */ - if (length == FIEMAP_MAX_OFFSET) - bm.bmv_length = -1LL; - else - bm.bmv_length = BTOBB(start + length) - bm.bmv_offset; - - /* We add one because in getbmap world count includes the header */ - bm.bmv_count = !fieinfo->fi_extents_max ? MAXEXTNUM : - fieinfo->fi_extents_max + 1; - bm.bmv_count = min_t(__s32, bm.bmv_count, - (PAGE_SIZE * 16 / sizeof(struct getbmapx))); - bm.bmv_iflags = BMV_IF_PREALLOC | BMV_IF_NO_HOLES; - if (fieinfo->fi_flags & FIEMAP_FLAG_XATTR) - bm.bmv_iflags |= BMV_IF_ATTRFORK; - if (!(fieinfo->fi_flags & FIEMAP_FLAG_SYNC)) - bm.bmv_iflags |= BMV_IF_DELALLOC; - - error = xfs_getbmap(ip, &bm, xfs_fiemap_format, fieinfo); - if (error) - return error; + xfs_ilock(XFS_I(inode), XFS_IOLOCK_SHARED); + error = iomap_fiemap(inode, fieinfo, start, length, &xfs_iomap_ops); + xfs_iunlock(XFS_I(inode), XFS_IOLOCK_SHARED); - return 0; + return error; } STATIC int diff --git a/fs/xfs/xfs_linux.h b/fs/xfs/xfs_linux.h index a8192dc797dc..b8d64d520e12 100644 --- a/fs/xfs/xfs_linux.h +++ b/fs/xfs/xfs_linux.h @@ -328,13 +328,6 @@ static inline __uint64_t howmany_64(__uint64_t x, __uint32_t y) return x; } -/* ARM old ABI has some weird alignment/padding */ -#if defined(__arm__) && !defined(__ARM_EABI__) -#define __arch_pack __attribute__((packed)) -#else -#define __arch_pack -#endif - #define ASSERT_ALWAYS(expr) \ (unlikely(expr) ? (void)0 : assfail(#expr, __FILE__, __LINE__)) diff --git a/fs/xfs/xfs_log.c b/fs/xfs/xfs_log.c index bde02f1fba73..3b74fa011bb1 100644 --- a/fs/xfs/xfs_log.c +++ b/fs/xfs/xfs_log.c @@ -788,7 +788,7 @@ xfs_log_mount_cancel( * As far as I know, there weren't any dependencies on the old behaviour. */ -int +static int xfs_log_unmount_write(xfs_mount_t *mp) { struct xlog *log = mp->m_log; @@ -1036,7 +1036,7 @@ xfs_log_space_wake( * there's no point in running a dummy transaction at this point because we * can't start trying to idle the log until both the CIL and AIL are empty. */ -int +static int xfs_log_need_covered(xfs_mount_t *mp) { struct xlog *log = mp->m_log; @@ -1177,7 +1177,7 @@ xlog_space_left( * The log manager needs its own routine, in order to control what * happens with the buffer after the write completes. */ -void +static void xlog_iodone(xfs_buf_t *bp) { struct xlog_in_core *iclog = bp->b_fspriv; @@ -1302,7 +1302,7 @@ xfs_log_work_queue( * disk. If there is nothing dirty, then we might need to cover the log to * indicate that the filesystem is idle. */ -void +static void xfs_log_worker( struct work_struct *work) { @@ -1415,7 +1415,7 @@ xlog_alloc_log( */ error = -ENOMEM; bp = xfs_buf_alloc(mp->m_logdev_targp, XFS_BUF_DADDR_NULL, - BTOBB(log->l_iclog_size), 0); + BTOBB(log->l_iclog_size), XBF_NO_IOACCT); if (!bp) goto out_free_log; @@ -1454,7 +1454,8 @@ xlog_alloc_log( prev_iclog = iclog; bp = xfs_buf_get_uncached(mp->m_logdev_targp, - BTOBB(log->l_iclog_size), 0); + BTOBB(log->l_iclog_size), + XBF_NO_IOACCT); if (!bp) goto out_free_iclog; diff --git a/fs/xfs/xfs_log.h b/fs/xfs/xfs_log.h index 80ba0c047090..b5e71072fde5 100644 --- a/fs/xfs/xfs_log.h +++ b/fs/xfs/xfs_log.h @@ -163,12 +163,8 @@ int xfs_log_reserve(struct xfs_mount *mp, __uint8_t clientid, bool permanent); int xfs_log_regrant(struct xfs_mount *mp, struct xlog_ticket *tic); -int xfs_log_unmount_write(struct xfs_mount *mp); void xfs_log_unmount(struct xfs_mount *mp); int xfs_log_force_umount(struct xfs_mount *mp, int logerror); -int xfs_log_need_covered(struct xfs_mount *mp); - -void xlog_iodone(struct xfs_buf *); struct xlog_ticket *xfs_log_ticket_get(struct xlog_ticket *ticket); void xfs_log_ticket_put(struct xlog_ticket *ticket); @@ -178,7 +174,6 @@ void xfs_log_commit_cil(struct xfs_mount *mp, struct xfs_trans *tp, bool xfs_log_item_in_current_chkpt(struct xfs_log_item *lip); void xfs_log_work_queue(struct xfs_mount *mp); -void xfs_log_worker(struct work_struct *work); void xfs_log_quiesce(struct xfs_mount *mp); bool xfs_log_check_lsn(struct xfs_mount *, xfs_lsn_t); diff --git a/fs/xfs/xfs_log_cil.c b/fs/xfs/xfs_log_cil.c index 5e54e7955ea6..a4ab192e1792 100644 --- a/fs/xfs/xfs_log_cil.c +++ b/fs/xfs/xfs_log_cil.c @@ -78,6 +78,157 @@ xlog_cil_init_post_recovery( log->l_cilp->xc_ctx->sequence = 1; } +static inline int +xlog_cil_iovec_space( + uint niovecs) +{ + return round_up((sizeof(struct xfs_log_vec) + + niovecs * sizeof(struct xfs_log_iovec)), + sizeof(uint64_t)); +} + +/* + * Allocate or pin log vector buffers for CIL insertion. + * + * The CIL currently uses disposable buffers for copying a snapshot of the + * modified items into the log during a push. The biggest problem with this is + * the requirement to allocate the disposable buffer during the commit if: + * a) does not exist; or + * b) it is too small + * + * If we do this allocation within xlog_cil_insert_format_items(), it is done + * under the xc_ctx_lock, which means that a CIL push cannot occur during + * the memory allocation. This means that we have a potential deadlock situation + * under low memory conditions when we have lots of dirty metadata pinned in + * the CIL and we need a CIL commit to occur to free memory. + * + * To avoid this, we need to move the memory allocation outside the + * xc_ctx_lock, but because the log vector buffers are disposable, that opens + * up a TOCTOU race condition w.r.t. the CIL committing and removing the log + * vector buffers between the check and the formatting of the item into the + * log vector buffer within the xc_ctx_lock. + * + * Because the log vector buffer needs to be unchanged during the CIL push + * process, we cannot share the buffer between the transaction commit (which + * modifies the buffer) and the CIL push context that is writing the changes + * into the log. This means skipping preallocation of buffer space is + * unreliable, but we most definitely do not want to be allocating and freeing + * buffers unnecessarily during commits when overwrites can be done safely. + * + * The simplest solution to this problem is to allocate a shadow buffer when a + * log item is committed for the second time, and then to only use this buffer + * if necessary. The buffer can remain attached to the log item until such time + * it is needed, and this is the buffer that is reallocated to match the size of + * the incoming modification. Then during the formatting of the item we can swap + * the active buffer with the new one if we can't reuse the existing buffer. We + * don't free the old buffer as it may be reused on the next modification if + * it's size is right, otherwise we'll free and reallocate it at that point. + * + * This function builds a vector for the changes in each log item in the + * transaction. It then works out the length of the buffer needed for each log + * item, allocates them and attaches the vector to the log item in preparation + * for the formatting step which occurs under the xc_ctx_lock. + * + * While this means the memory footprint goes up, it avoids the repeated + * alloc/free pattern that repeated modifications of an item would otherwise + * cause, and hence minimises the CPU overhead of such behaviour. + */ +static void +xlog_cil_alloc_shadow_bufs( + struct xlog *log, + struct xfs_trans *tp) +{ + struct xfs_log_item_desc *lidp; + + list_for_each_entry(lidp, &tp->t_items, lid_trans) { + struct xfs_log_item *lip = lidp->lid_item; + struct xfs_log_vec *lv; + int niovecs = 0; + int nbytes = 0; + int buf_size; + bool ordered = false; + + /* Skip items which aren't dirty in this transaction. */ + if (!(lidp->lid_flags & XFS_LID_DIRTY)) + continue; + + /* get number of vecs and size of data to be stored */ + lip->li_ops->iop_size(lip, &niovecs, &nbytes); + + /* + * Ordered items need to be tracked but we do not wish to write + * them. We need a logvec to track the object, but we do not + * need an iovec or buffer to be allocated for copying data. + */ + if (niovecs == XFS_LOG_VEC_ORDERED) { + ordered = true; + niovecs = 0; + nbytes = 0; + } + + /* + * We 64-bit align the length of each iovec so that the start + * of the next one is naturally aligned. We'll need to + * account for that slack space here. Then round nbytes up + * to 64-bit alignment so that the initial buffer alignment is + * easy to calculate and verify. + */ + nbytes += niovecs * sizeof(uint64_t); + nbytes = round_up(nbytes, sizeof(uint64_t)); + + /* + * The data buffer needs to start 64-bit aligned, so round up + * that space to ensure we can align it appropriately and not + * overrun the buffer. + */ + buf_size = nbytes + xlog_cil_iovec_space(niovecs); + + /* + * if we have no shadow buffer, or it is too small, we need to + * reallocate it. + */ + if (!lip->li_lv_shadow || + buf_size > lip->li_lv_shadow->lv_size) { + + /* + * We free and allocate here as a realloc would copy + * unecessary data. We don't use kmem_zalloc() for the + * same reason - we don't need to zero the data area in + * the buffer, only the log vector header and the iovec + * storage. + */ + kmem_free(lip->li_lv_shadow); + + lv = kmem_alloc(buf_size, KM_SLEEP|KM_NOFS); + memset(lv, 0, xlog_cil_iovec_space(niovecs)); + + lv->lv_item = lip; + lv->lv_size = buf_size; + if (ordered) + lv->lv_buf_len = XFS_LOG_VEC_ORDERED; + else + lv->lv_iovecp = (struct xfs_log_iovec *)&lv[1]; + lip->li_lv_shadow = lv; + } else { + /* same or smaller, optimise common overwrite case */ + lv = lip->li_lv_shadow; + if (ordered) + lv->lv_buf_len = XFS_LOG_VEC_ORDERED; + else + lv->lv_buf_len = 0; + lv->lv_bytes = 0; + lv->lv_next = NULL; + } + + /* Ensure the lv is set up according to ->iop_size */ + lv->lv_niovecs = niovecs; + + /* The allocated data region lies beyond the iovec region */ + lv->lv_buf = (char *)lv + xlog_cil_iovec_space(niovecs); + } + +} + /* * Prepare the log item for insertion into the CIL. Calculate the difference in * log space and vectors it will consume, and if it is a new item pin it as @@ -100,16 +251,19 @@ xfs_cil_prepare_item( /* * If there is no old LV, this is the first time we've seen the item in * this CIL context and so we need to pin it. If we are replacing the - * old_lv, then remove the space it accounts for and free it. + * old_lv, then remove the space it accounts for and make it the shadow + * buffer for later freeing. In both cases we are now switching to the + * shadow buffer, so update the the pointer to it appropriately. */ - if (!old_lv) + if (!old_lv) { lv->lv_item->li_ops->iop_pin(lv->lv_item); - else if (old_lv != lv) { + lv->lv_item->li_lv_shadow = NULL; + } else if (old_lv != lv) { ASSERT(lv->lv_buf_len != XFS_LOG_VEC_ORDERED); *diff_len -= old_lv->lv_bytes; *diff_iovecs -= old_lv->lv_niovecs; - kmem_free(old_lv); + lv->lv_item->li_lv_shadow = old_lv; } /* attach new log vector to log item */ @@ -133,11 +287,13 @@ xfs_cil_prepare_item( * write it out asynchronously without needing to relock the object that was * modified at the time it gets written into the iclog. * - * This function builds a vector for the changes in each log item in the - * transaction. It then works out the length of the buffer needed for each log - * item, allocates them and formats the vector for the item into the buffer. - * The buffer is then attached to the log item are then inserted into the - * Committed Item List for tracking until the next checkpoint is written out. + * This function takes the prepared log vectors attached to each log item, and + * formats the changes into the log vector buffer. The buffer it uses is + * dependent on the current state of the vector in the CIL - the shadow lv is + * guaranteed to be large enough for the current modification, but we will only + * use that if we can't reuse the existing lv. If we can't reuse the existing + * lv, then simple swap it out for the shadow lv. We don't free it - that is + * done lazily either by th enext modification or the freeing of the log item. * * We don't set up region headers during this process; we simply copy the * regions into the flat buffer. We can do this because we still have to do a @@ -170,59 +326,29 @@ xlog_cil_insert_format_items( list_for_each_entry(lidp, &tp->t_items, lid_trans) { struct xfs_log_item *lip = lidp->lid_item; struct xfs_log_vec *lv; - struct xfs_log_vec *old_lv; - int niovecs = 0; - int nbytes = 0; - int buf_size; + struct xfs_log_vec *old_lv = NULL; + struct xfs_log_vec *shadow; bool ordered = false; /* Skip items which aren't dirty in this transaction. */ if (!(lidp->lid_flags & XFS_LID_DIRTY)) continue; - /* get number of vecs and size of data to be stored */ - lip->li_ops->iop_size(lip, &niovecs, &nbytes); - - /* Skip items that do not have any vectors for writing */ - if (!niovecs) - continue; - /* - * Ordered items need to be tracked but we do not wish to write - * them. We need a logvec to track the object, but we do not - * need an iovec or buffer to be allocated for copying data. + * The formatting size information is already attached to + * the shadow lv on the log item. */ - if (niovecs == XFS_LOG_VEC_ORDERED) { + shadow = lip->li_lv_shadow; + if (shadow->lv_buf_len == XFS_LOG_VEC_ORDERED) ordered = true; - niovecs = 0; - nbytes = 0; - } - /* - * We 64-bit align the length of each iovec so that the start - * of the next one is naturally aligned. We'll need to - * account for that slack space here. Then round nbytes up - * to 64-bit alignment so that the initial buffer alignment is - * easy to calculate and verify. - */ - nbytes += niovecs * sizeof(uint64_t); - nbytes = round_up(nbytes, sizeof(uint64_t)); - - /* grab the old item if it exists for reservation accounting */ - old_lv = lip->li_lv; - - /* - * The data buffer needs to start 64-bit aligned, so round up - * that space to ensure we can align it appropriately and not - * overrun the buffer. - */ - buf_size = nbytes + - round_up((sizeof(struct xfs_log_vec) + - niovecs * sizeof(struct xfs_log_iovec)), - sizeof(uint64_t)); + /* Skip items that do not have any vectors for writing */ + if (!shadow->lv_niovecs && !ordered) + continue; /* compare to existing item size */ - if (lip->li_lv && buf_size <= lip->li_lv->lv_size) { + old_lv = lip->li_lv; + if (lip->li_lv && shadow->lv_size <= lip->li_lv->lv_size) { /* same or smaller, optimise common overwrite case */ lv = lip->li_lv; lv->lv_next = NULL; @@ -236,32 +362,29 @@ xlog_cil_insert_format_items( */ *diff_iovecs -= lv->lv_niovecs; *diff_len -= lv->lv_bytes; + + /* Ensure the lv is set up according to ->iop_size */ + lv->lv_niovecs = shadow->lv_niovecs; + + /* reset the lv buffer information for new formatting */ + lv->lv_buf_len = 0; + lv->lv_bytes = 0; + lv->lv_buf = (char *)lv + + xlog_cil_iovec_space(lv->lv_niovecs); } else { - /* allocate new data chunk */ - lv = kmem_zalloc(buf_size, KM_SLEEP|KM_NOFS); + /* switch to shadow buffer! */ + lv = shadow; lv->lv_item = lip; - lv->lv_size = buf_size; if (ordered) { /* track as an ordered logvec */ ASSERT(lip->li_lv == NULL); - lv->lv_buf_len = XFS_LOG_VEC_ORDERED; goto insert; } - lv->lv_iovecp = (struct xfs_log_iovec *)&lv[1]; } - /* Ensure the lv is set up according to ->iop_size */ - lv->lv_niovecs = niovecs; - - /* The allocated data region lies beyond the iovec region */ - lv->lv_buf_len = 0; - lv->lv_bytes = 0; - lv->lv_buf = (char *)lv + buf_size - nbytes; ASSERT(IS_ALIGNED((unsigned long)lv->lv_buf, sizeof(uint64_t))); - lip->li_ops->iop_format(lip, lv); insert: - ASSERT(lv->lv_buf_len <= nbytes); xfs_cil_prepare_item(log, lv, old_lv, diff_len, diff_iovecs); } } @@ -783,6 +906,13 @@ xfs_log_commit_cil( struct xlog *log = mp->m_log; struct xfs_cil *cil = log->l_cilp; + /* + * Do all necessary memory allocation before we lock the CIL. + * This ensures the allocation does not deadlock with a CIL + * push in memory reclaim (e.g. from kswapd). + */ + xlog_cil_alloc_shadow_bufs(log, tp); + /* lock out background commit */ down_read(&cil->xc_ctx_lock); diff --git a/fs/xfs/xfs_mount.c b/fs/xfs/xfs_mount.c index e39b02351b4a..970c19ba2f56 100644 --- a/fs/xfs/xfs_mount.c +++ b/fs/xfs/xfs_mount.c @@ -272,13 +272,15 @@ xfs_readsb( buf_ops = NULL; /* - * Allocate a (locked) buffer to hold the superblock. - * This will be kept around at all times to optimize - * access to the superblock. + * Allocate a (locked) buffer to hold the superblock. This will be kept + * around at all times to optimize access to the superblock. Therefore, + * set XBF_NO_IOACCT to make sure it doesn't hold the buftarg count + * elevated. */ reread: error = xfs_buf_read_uncached(mp->m_ddev_targp, XFS_SB_DADDR, - BTOBB(sector_size), 0, &bp, buf_ops); + BTOBB(sector_size), XBF_NO_IOACCT, &bp, + buf_ops); if (error) { if (loud) xfs_warn(mp, "SB validate failed with error %d.", error); diff --git a/fs/xfs/xfs_ondisk.h b/fs/xfs/xfs_ondisk.h index 184c44effdd5..0cc8d8f74356 100644 --- a/fs/xfs/xfs_ondisk.h +++ b/fs/xfs/xfs_ondisk.h @@ -22,6 +22,11 @@ BUILD_BUG_ON_MSG(sizeof(structname) != (size), "XFS: sizeof(" \ #structname ") is wrong, expected " #size) +#define XFS_CHECK_OFFSET(structname, member, off) \ + BUILD_BUG_ON_MSG(offsetof(structname, member) != (off), \ + "XFS: offsetof(" #structname ", " #member ") is wrong, " \ + "expected " #off) + static inline void __init xfs_check_ondisk_structs(void) { @@ -34,6 +39,8 @@ xfs_check_ondisk_structs(void) XFS_CHECK_STRUCT_SIZE(struct xfs_bmbt_key, 8); XFS_CHECK_STRUCT_SIZE(struct xfs_bmbt_rec, 16); XFS_CHECK_STRUCT_SIZE(struct xfs_bmdr_block, 4); + XFS_CHECK_STRUCT_SIZE(struct xfs_btree_block_shdr, 48); + XFS_CHECK_STRUCT_SIZE(struct xfs_btree_block_lhdr, 64); XFS_CHECK_STRUCT_SIZE(struct xfs_btree_block, 72); XFS_CHECK_STRUCT_SIZE(struct xfs_dinode, 176); XFS_CHECK_STRUCT_SIZE(struct xfs_disk_dquot, 104); @@ -75,27 +82,39 @@ xfs_check_ondisk_structs(void) XFS_CHECK_STRUCT_SIZE(xfs_attr_leaf_name_remote_t, 12); */ + XFS_CHECK_OFFSET(xfs_attr_leaf_name_local_t, valuelen, 0); + XFS_CHECK_OFFSET(xfs_attr_leaf_name_local_t, namelen, 2); + XFS_CHECK_OFFSET(xfs_attr_leaf_name_local_t, nameval, 3); + XFS_CHECK_OFFSET(xfs_attr_leaf_name_remote_t, valueblk, 0); + XFS_CHECK_OFFSET(xfs_attr_leaf_name_remote_t, valuelen, 4); + XFS_CHECK_OFFSET(xfs_attr_leaf_name_remote_t, namelen, 8); + XFS_CHECK_OFFSET(xfs_attr_leaf_name_remote_t, name, 9); XFS_CHECK_STRUCT_SIZE(xfs_attr_leafblock_t, 40); - XFS_CHECK_STRUCT_SIZE(xfs_attr_shortform_t, 8); + XFS_CHECK_OFFSET(xfs_attr_shortform_t, hdr.totsize, 0); + XFS_CHECK_OFFSET(xfs_attr_shortform_t, hdr.count, 2); + XFS_CHECK_OFFSET(xfs_attr_shortform_t, list[0].namelen, 4); + XFS_CHECK_OFFSET(xfs_attr_shortform_t, list[0].valuelen, 5); + XFS_CHECK_OFFSET(xfs_attr_shortform_t, list[0].flags, 6); + XFS_CHECK_OFFSET(xfs_attr_shortform_t, list[0].nameval, 7); XFS_CHECK_STRUCT_SIZE(xfs_da_blkinfo_t, 12); XFS_CHECK_STRUCT_SIZE(xfs_da_intnode_t, 16); XFS_CHECK_STRUCT_SIZE(xfs_da_node_entry_t, 8); XFS_CHECK_STRUCT_SIZE(xfs_da_node_hdr_t, 16); XFS_CHECK_STRUCT_SIZE(xfs_dir2_data_free_t, 4); XFS_CHECK_STRUCT_SIZE(xfs_dir2_data_hdr_t, 16); - XFS_CHECK_STRUCT_SIZE(xfs_dir2_data_unused_t, 6); + XFS_CHECK_OFFSET(xfs_dir2_data_unused_t, freetag, 0); + XFS_CHECK_OFFSET(xfs_dir2_data_unused_t, length, 2); XFS_CHECK_STRUCT_SIZE(xfs_dir2_free_hdr_t, 16); XFS_CHECK_STRUCT_SIZE(xfs_dir2_free_t, 16); - XFS_CHECK_STRUCT_SIZE(xfs_dir2_ino4_t, 4); - XFS_CHECK_STRUCT_SIZE(xfs_dir2_ino8_t, 8); - XFS_CHECK_STRUCT_SIZE(xfs_dir2_inou_t, 8); XFS_CHECK_STRUCT_SIZE(xfs_dir2_leaf_entry_t, 8); XFS_CHECK_STRUCT_SIZE(xfs_dir2_leaf_hdr_t, 16); XFS_CHECK_STRUCT_SIZE(xfs_dir2_leaf_t, 16); XFS_CHECK_STRUCT_SIZE(xfs_dir2_leaf_tail_t, 4); XFS_CHECK_STRUCT_SIZE(xfs_dir2_sf_entry_t, 3); + XFS_CHECK_OFFSET(xfs_dir2_sf_entry_t, namelen, 0); + XFS_CHECK_OFFSET(xfs_dir2_sf_entry_t, offset, 1); + XFS_CHECK_OFFSET(xfs_dir2_sf_entry_t, name, 3); XFS_CHECK_STRUCT_SIZE(xfs_dir2_sf_hdr_t, 10); - XFS_CHECK_STRUCT_SIZE(xfs_dir2_sf_off_t, 2); /* log structures */ XFS_CHECK_STRUCT_SIZE(struct xfs_dq_logformat, 24); diff --git a/fs/xfs/xfs_pnfs.c b/fs/xfs/xfs_pnfs.c index d5b756669fb5..0f14b2e4bf6c 100644 --- a/fs/xfs/xfs_pnfs.c +++ b/fs/xfs/xfs_pnfs.c @@ -1,6 +1,7 @@ /* * Copyright (c) 2014 Christoph Hellwig. */ +#include <linux/iomap.h> #include "xfs.h" #include "xfs_format.h" #include "xfs_log_format.h" @@ -79,32 +80,6 @@ xfs_fs_get_uuid( return 0; } -static void -xfs_bmbt_to_iomap( - struct xfs_inode *ip, - struct iomap *iomap, - struct xfs_bmbt_irec *imap) -{ - struct xfs_mount *mp = ip->i_mount; - - if (imap->br_startblock == HOLESTARTBLOCK) { - iomap->blkno = IOMAP_NULL_BLOCK; - iomap->type = IOMAP_HOLE; - } else if (imap->br_startblock == DELAYSTARTBLOCK) { - iomap->blkno = IOMAP_NULL_BLOCK; - iomap->type = IOMAP_DELALLOC; - } else { - iomap->blkno = - XFS_FSB_TO_DADDR(ip->i_mount, imap->br_startblock); - if (imap->br_state == XFS_EXT_UNWRITTEN) - iomap->type = IOMAP_UNWRITTEN; - else - iomap->type = IOMAP_MAPPED; - } - iomap->offset = XFS_FSB_TO_B(mp, imap->br_startoff); - iomap->length = XFS_FSB_TO_B(mp, imap->br_blockcount); -} - /* * Get a layout for the pNFS client. */ diff --git a/fs/xfs/xfs_rtalloc.h b/fs/xfs/xfs_rtalloc.h index 76c0a4a9bb17..355dd9e1cb64 100644 --- a/fs/xfs/xfs_rtalloc.h +++ b/fs/xfs/xfs_rtalloc.h @@ -98,8 +98,6 @@ xfs_growfs_rt( /* * From xfs_rtbitmap.c */ -int xfs_rtbuf_get(struct xfs_mount *mp, struct xfs_trans *tp, - xfs_rtblock_t block, int issum, struct xfs_buf **bpp); int xfs_rtcheck_range(struct xfs_mount *mp, struct xfs_trans *tp, xfs_rtblock_t start, xfs_extlen_t len, int val, xfs_rtblock_t *new, int *stat); diff --git a/fs/xfs/xfs_stats.c b/fs/xfs/xfs_stats.c index 8686df6c7609..d266e835ecc3 100644 --- a/fs/xfs/xfs_stats.c +++ b/fs/xfs/xfs_stats.c @@ -128,7 +128,6 @@ static int xqm_proc_open(struct inode *inode, struct file *file) } static const struct file_operations xqm_proc_fops = { - .owner = THIS_MODULE, .open = xqm_proc_open, .read = seq_read, .llseek = seq_lseek, diff --git a/fs/xfs/xfs_super.c b/fs/xfs/xfs_super.c index 11ea5d51db56..0303f1005f88 100644 --- a/fs/xfs/xfs_super.c +++ b/fs/xfs/xfs_super.c @@ -546,7 +546,7 @@ xfs_showargs( return 0; } -__uint64_t +static __uint64_t xfs_max_file_offset( unsigned int blockshift) { @@ -1294,6 +1294,7 @@ xfs_fs_remount( */ xfs_restore_resvblks(mp); xfs_log_work_queue(mp); + xfs_queue_eofblocks(mp); } /* rw -> ro */ @@ -1306,6 +1307,13 @@ xfs_fs_remount( * return it to the same size. */ xfs_save_resvblks(mp); + + /* + * Cancel background eofb scanning so it cannot race with the + * final log force+buftarg wait and deadlock the remount. + */ + cancel_delayed_work_sync(&mp->m_eofblocks_work); + xfs_quiesce_attr(mp); mp->m_flags |= XFS_MOUNT_RDONLY; } @@ -1565,10 +1573,6 @@ xfs_fs_fill_super( } } - if (xfs_sb_version_hassparseinodes(&mp->m_sb)) - xfs_alert(mp, - "EXPERIMENTAL sparse inode feature enabled. Use at your own risk!"); - error = xfs_mountfs(mp); if (error) goto out_filestream_unmount; @@ -1692,8 +1696,9 @@ xfs_init_zones(void) if (!xfs_log_ticket_zone) goto out_free_ioend_bioset; - xfs_bmap_free_item_zone = kmem_zone_init(sizeof(xfs_bmap_free_item_t), - "xfs_bmap_free_item"); + xfs_bmap_free_item_zone = kmem_zone_init( + sizeof(struct xfs_bmap_free_item), + "xfs_bmap_free_item"); if (!xfs_bmap_free_item_zone) goto out_destroy_log_ticket_zone; diff --git a/fs/xfs/xfs_super.h b/fs/xfs/xfs_super.h index 2dfb1ce4585f..529bce9fc37e 100644 --- a/fs/xfs/xfs_super.h +++ b/fs/xfs/xfs_super.h @@ -61,8 +61,6 @@ struct xfs_mount; struct xfs_buftarg; struct block_device; -extern __uint64_t xfs_max_file_offset(unsigned int); - extern void xfs_flush_inodes(struct xfs_mount *mp); extern void xfs_blkdev_issue_flush(struct xfs_buftarg *); extern xfs_agnumber_t xfs_set_inode_alloc(struct xfs_mount *, diff --git a/fs/xfs/xfs_sysfs.c b/fs/xfs/xfs_sysfs.c index 4c2c55086208..79cfd3fc5324 100644 --- a/fs/xfs/xfs_sysfs.c +++ b/fs/xfs/xfs_sysfs.c @@ -634,6 +634,9 @@ xfs_error_get_cfg( { struct xfs_error_cfg *cfg; + if (error < 0) + error = -error; + switch (error) { case EIO: cfg = &mp->m_error_cfg[error_class][XFS_ERR_EIO]; diff --git a/fs/xfs/xfs_trace.h b/fs/xfs/xfs_trace.h index ea94ee0fe5ea..145169093fe0 100644 --- a/fs/xfs/xfs_trace.h +++ b/fs/xfs/xfs_trace.h @@ -354,6 +354,7 @@ DEFINE_BUF_EVENT(xfs_buf_submit_wait); DEFINE_BUF_EVENT(xfs_buf_bawrite); DEFINE_BUF_EVENT(xfs_buf_lock); DEFINE_BUF_EVENT(xfs_buf_lock_done); +DEFINE_BUF_EVENT(xfs_buf_trylock_fail); DEFINE_BUF_EVENT(xfs_buf_trylock); DEFINE_BUF_EVENT(xfs_buf_unlock); DEFINE_BUF_EVENT(xfs_buf_iowait); @@ -1134,15 +1135,14 @@ TRACE_EVENT(xfs_log_assign_tail_lsn, ) DECLARE_EVENT_CLASS(xfs_file_class, - TP_PROTO(struct xfs_inode *ip, size_t count, loff_t offset, int flags), - TP_ARGS(ip, count, offset, flags), + TP_PROTO(struct xfs_inode *ip, size_t count, loff_t offset), + TP_ARGS(ip, count, offset), TP_STRUCT__entry( __field(dev_t, dev) __field(xfs_ino_t, ino) __field(xfs_fsize_t, size) __field(loff_t, offset) __field(size_t, count) - __field(int, flags) ), TP_fast_assign( __entry->dev = VFS_I(ip)->i_sb->s_dev; @@ -1150,25 +1150,25 @@ DECLARE_EVENT_CLASS(xfs_file_class, __entry->size = ip->i_d.di_size; __entry->offset = offset; __entry->count = count; - __entry->flags = flags; ), - TP_printk("dev %d:%d ino 0x%llx size 0x%llx " - "offset 0x%llx count 0x%zx ioflags %s", + TP_printk("dev %d:%d ino 0x%llx size 0x%llx offset 0x%llx count 0x%zx", MAJOR(__entry->dev), MINOR(__entry->dev), __entry->ino, __entry->size, __entry->offset, - __entry->count, - __print_flags(__entry->flags, "|", XFS_IO_FLAGS)) + __entry->count) ) #define DEFINE_RW_EVENT(name) \ DEFINE_EVENT(xfs_file_class, name, \ - TP_PROTO(struct xfs_inode *ip, size_t count, loff_t offset, int flags), \ - TP_ARGS(ip, count, offset, flags)) -DEFINE_RW_EVENT(xfs_file_read); + TP_PROTO(struct xfs_inode *ip, size_t count, loff_t offset), \ + TP_ARGS(ip, count, offset)) +DEFINE_RW_EVENT(xfs_file_buffered_read); +DEFINE_RW_EVENT(xfs_file_direct_read); +DEFINE_RW_EVENT(xfs_file_dax_read); DEFINE_RW_EVENT(xfs_file_buffered_write); DEFINE_RW_EVENT(xfs_file_direct_write); +DEFINE_RW_EVENT(xfs_file_dax_write); DEFINE_RW_EVENT(xfs_file_splice_read); DECLARE_EVENT_CLASS(xfs_page_class, @@ -1295,6 +1295,9 @@ DEFINE_IOMAP_EVENT(xfs_map_blocks_alloc); DEFINE_IOMAP_EVENT(xfs_get_blocks_found); DEFINE_IOMAP_EVENT(xfs_get_blocks_alloc); DEFINE_IOMAP_EVENT(xfs_get_blocks_map_direct); +DEFINE_IOMAP_EVENT(xfs_iomap_alloc); +DEFINE_IOMAP_EVENT(xfs_iomap_found); +DEFINE_IOMAP_EVENT(xfs_iomap_not_found); DECLARE_EVENT_CLASS(xfs_simple_io_class, TP_PROTO(struct xfs_inode *ip, xfs_off_t offset, ssize_t count), diff --git a/fs/xfs/xfs_trans.h b/fs/xfs/xfs_trans.h index 9a462e892e4f..9b2b9fa89331 100644 --- a/fs/xfs/xfs_trans.h +++ b/fs/xfs/xfs_trans.h @@ -52,6 +52,7 @@ typedef struct xfs_log_item { /* delayed logging */ struct list_head li_cil; /* CIL pointers */ struct xfs_log_vec *li_lv; /* active log vector */ + struct xfs_log_vec *li_lv_shadow; /* standby vector */ xfs_lsn_t li_seq; /* CIL commit seq */ } xfs_log_item_t; |