diff options
Diffstat (limited to 'fs')
221 files changed, 3666 insertions, 2594 deletions
diff --git a/fs/9p/cache.c b/fs/9p/cache.c index 103ca5e1267b..64c58eb26159 100644 --- a/fs/9p/cache.c +++ b/fs/9p/cache.c @@ -151,34 +151,6 @@ fscache_checkaux v9fs_cache_inode_check_aux(void *cookie_netfs_data, return FSCACHE_CHECKAUX_OKAY; } -static void v9fs_cache_inode_now_uncached(void *cookie_netfs_data) -{ - struct v9fs_inode *v9inode = cookie_netfs_data; - struct pagevec pvec; - pgoff_t first; - int loop, nr_pages; - - pagevec_init(&pvec, 0); - first = 0; - - for (;;) { - nr_pages = pagevec_lookup(&pvec, v9inode->vfs_inode.i_mapping, - first, - PAGEVEC_SIZE - pagevec_count(&pvec)); - if (!nr_pages) - break; - - for (loop = 0; loop < nr_pages; loop++) - ClearPageFsCache(pvec.pages[loop]); - - first = pvec.pages[nr_pages - 1]->index + 1; - - pvec.nr = nr_pages; - pagevec_release(&pvec); - cond_resched(); - } -} - const struct fscache_cookie_def v9fs_cache_inode_index_def = { .name = "9p.inode", .type = FSCACHE_COOKIE_TYPE_DATAFILE, @@ -186,7 +158,6 @@ const struct fscache_cookie_def v9fs_cache_inode_index_def = { .get_attr = v9fs_cache_inode_get_attr, .get_aux = v9fs_cache_inode_get_aux, .check_aux = v9fs_cache_inode_check_aux, - .now_uncached = v9fs_cache_inode_now_uncached, }; void v9fs_cache_inode_get_cookie(struct inode *inode) diff --git a/fs/9p/vfs_file.c b/fs/9p/vfs_file.c index 3de3b4a89d89..03c9e325bfbc 100644 --- a/fs/9p/vfs_file.c +++ b/fs/9p/vfs_file.c @@ -288,7 +288,7 @@ static int v9fs_file_getlock(struct file *filp, struct file_lock *fl) fl->fl_end = OFFSET_MAX; else fl->fl_end = glock.start + glock.length - 1; - fl->fl_pid = glock.proc_id; + fl->fl_pid = -glock.proc_id; } kfree(glock.client_id); return res; @@ -445,7 +445,7 @@ static int v9fs_file_fsync(struct file *filp, loff_t start, loff_t end, struct p9_wstat wstat; int retval; - retval = filemap_write_and_wait_range(inode->i_mapping, start, end); + retval = file_write_and_wait_range(filp, start, end); if (retval) return retval; @@ -468,7 +468,7 @@ int v9fs_file_fsync_dotl(struct file *filp, loff_t start, loff_t end, struct inode *inode = filp->f_mapping->host; int retval; - retval = filemap_write_and_wait_range(inode->i_mapping, start, end); + retval = file_write_and_wait_range(filp, start, end); if (retval) return retval; diff --git a/fs/affs/file.c b/fs/affs/file.c index 196ee7f6fdc4..00331810f690 100644 --- a/fs/affs/file.c +++ b/fs/affs/file.c @@ -954,7 +954,7 @@ int affs_file_fsync(struct file *filp, loff_t start, loff_t end, int datasync) struct inode *inode = filp->f_mapping->host; int ret, err; - err = filemap_write_and_wait_range(inode->i_mapping, start, end); + err = file_write_and_wait_range(filp, start, end); if (err) return err; diff --git a/fs/afs/cache.c b/fs/afs/cache.c index 577763c3d88b..1fe855191261 100644 --- a/fs/afs/cache.c +++ b/fs/afs/cache.c @@ -39,7 +39,6 @@ static uint16_t afs_vnode_cache_get_aux(const void *cookie_netfs_data, static enum fscache_checkaux afs_vnode_cache_check_aux(void *cookie_netfs_data, const void *buffer, uint16_t buflen); -static void afs_vnode_cache_now_uncached(void *cookie_netfs_data); struct fscache_netfs afs_cache_netfs = { .name = "afs", @@ -75,7 +74,6 @@ struct fscache_cookie_def afs_vnode_cache_index_def = { .get_attr = afs_vnode_cache_get_attr, .get_aux = afs_vnode_cache_get_aux, .check_aux = afs_vnode_cache_check_aux, - .now_uncached = afs_vnode_cache_now_uncached, }; /* @@ -359,44 +357,3 @@ static enum fscache_checkaux afs_vnode_cache_check_aux(void *cookie_netfs_data, _leave(" = SUCCESS"); return FSCACHE_CHECKAUX_OKAY; } - -/* - * indication the cookie is no longer uncached - * - this function is called when the backing store currently caching a cookie - * is removed - * - the netfs should use this to clean up any markers indicating cached pages - * - this is mandatory for any object that may have data - */ -static void afs_vnode_cache_now_uncached(void *cookie_netfs_data) -{ - struct afs_vnode *vnode = cookie_netfs_data; - struct pagevec pvec; - pgoff_t first; - int loop, nr_pages; - - _enter("{%x,%x,%Lx}", - vnode->fid.vnode, vnode->fid.unique, vnode->status.data_version); - - pagevec_init(&pvec, 0); - first = 0; - - for (;;) { - /* grab a bunch of pages to clean */ - nr_pages = pagevec_lookup(&pvec, vnode->vfs_inode.i_mapping, - first, - PAGEVEC_SIZE - pagevec_count(&pvec)); - if (!nr_pages) - break; - - for (loop = 0; loop < nr_pages; loop++) - ClearPageFsCache(pvec.pages[loop]); - - first = pvec.pages[nr_pages - 1]->index + 1; - - pvec.nr = nr_pages; - pagevec_release(&pvec); - cond_resched(); - } - - _leave(""); -} diff --git a/fs/afs/misc.c b/fs/afs/misc.c index 100b207efc9e..c05f1f1c0d41 100644 --- a/fs/afs/misc.c +++ b/fs/afs/misc.c @@ -12,7 +12,6 @@ #include <linux/kernel.h> #include <linux/module.h> #include <linux/errno.h> -#include <rxrpc/packet.h> #include "internal.h" #include "afs_fs.h" diff --git a/fs/afs/rxrpc.c b/fs/afs/rxrpc.c index 02781e78ffb6..0bf191f0dbaf 100644 --- a/fs/afs/rxrpc.c +++ b/fs/afs/rxrpc.c @@ -14,7 +14,6 @@ #include <net/sock.h> #include <net/af_rxrpc.h> -#include <rxrpc/packet.h> #include "internal.h" #include "afs_cm.h" @@ -293,6 +292,19 @@ static void afs_load_bvec(struct afs_call *call, struct msghdr *msg, } /* + * Advance the AFS call state when the RxRPC call ends the transmit phase. + */ +static void afs_notify_end_request_tx(struct sock *sock, + struct rxrpc_call *rxcall, + unsigned long call_user_ID) +{ + struct afs_call *call = (struct afs_call *)call_user_ID; + + if (call->state == AFS_CALL_REQUESTING) + call->state = AFS_CALL_AWAIT_REPLY; +} + +/* * attach the data from a bunch of pages on an inode to a call */ static int afs_send_pages(struct afs_call *call, struct msghdr *msg) @@ -311,14 +323,8 @@ static int afs_send_pages(struct afs_call *call, struct msghdr *msg) bytes = msg->msg_iter.count; nr = msg->msg_iter.nr_segs; - /* Have to change the state *before* sending the last - * packet as RxRPC might give us the reply before it - * returns from sending the request. - */ - if (first + nr - 1 >= last) - call->state = AFS_CALL_AWAIT_REPLY; - ret = rxrpc_kernel_send_data(afs_socket, call->rxcall, - msg, bytes); + ret = rxrpc_kernel_send_data(afs_socket, call->rxcall, msg, + bytes, afs_notify_end_request_tx); for (loop = 0; loop < nr; loop++) put_page(bv[loop].bv_page); if (ret < 0) @@ -410,7 +416,8 @@ int afs_make_call(struct in_addr *addr, struct afs_call *call, gfp_t gfp, if (!call->send_pages) call->state = AFS_CALL_AWAIT_REPLY; ret = rxrpc_kernel_send_data(afs_socket, rxcall, - &msg, call->request_size); + &msg, call->request_size, + afs_notify_end_request_tx); if (ret < 0) goto error_do_abort; @@ -742,6 +749,20 @@ static int afs_deliver_cm_op_id(struct afs_call *call) } /* + * Advance the AFS call state when an RxRPC service call ends the transmit + * phase. + */ +static void afs_notify_end_reply_tx(struct sock *sock, + struct rxrpc_call *rxcall, + unsigned long call_user_ID) +{ + struct afs_call *call = (struct afs_call *)call_user_ID; + + if (call->state == AFS_CALL_REPLYING) + call->state = AFS_CALL_AWAIT_ACK; +} + +/* * send an empty reply */ void afs_send_empty_reply(struct afs_call *call) @@ -760,7 +781,8 @@ void afs_send_empty_reply(struct afs_call *call) msg.msg_flags = 0; call->state = AFS_CALL_AWAIT_ACK; - switch (rxrpc_kernel_send_data(afs_socket, call->rxcall, &msg, 0)) { + switch (rxrpc_kernel_send_data(afs_socket, call->rxcall, &msg, 0, + afs_notify_end_reply_tx)) { case 0: _leave(" [replied]"); return; @@ -798,7 +820,8 @@ void afs_send_simple_reply(struct afs_call *call, const void *buf, size_t len) msg.msg_flags = 0; call->state = AFS_CALL_AWAIT_ACK; - n = rxrpc_kernel_send_data(afs_socket, call->rxcall, &msg, len); + n = rxrpc_kernel_send_data(afs_socket, call->rxcall, &msg, len, + afs_notify_end_reply_tx); if (n >= 0) { /* Success */ _leave(" [replied]"); diff --git a/fs/afs/write.c b/fs/afs/write.c index 2d2fccd5044b..106e43db1115 100644 --- a/fs/afs/write.c +++ b/fs/afs/write.c @@ -714,7 +714,7 @@ int afs_fsync(struct file *file, loff_t start, loff_t end, int datasync) vnode->fid.vid, vnode->fid.vnode, file, datasync); - ret = filemap_write_and_wait_range(inode->i_mapping, start, end); + ret = file_write_and_wait_range(file, start, end); if (ret) return ret; inode_lock(inode); @@ -373,6 +373,14 @@ static int aio_migratepage(struct address_space *mapping, struct page *new, pgoff_t idx; int rc; + /* + * We cannot support the _NO_COPY case here, because copy needs to + * happen under the ctx->completion_lock. That does not work with the + * migration workflow of MIGRATE_SYNC_NO_COPY. + */ + if (mode == MIGRATE_SYNC_NO_COPY) + return -EINVAL; + rc = 0; /* mapping->private_lock here protects against the kioctx teardown. */ @@ -441,10 +449,9 @@ static const struct address_space_operations aio_ctx_aops = { #endif }; -static int aio_setup_ring(struct kioctx *ctx) +static int aio_setup_ring(struct kioctx *ctx, unsigned int nr_events) { struct aio_ring *ring; - unsigned nr_events = ctx->max_reqs; struct mm_struct *mm = current->mm; unsigned long size, unused; int nr_pages; @@ -707,6 +714,12 @@ static struct kioctx *ioctx_alloc(unsigned nr_events) int err = -ENOMEM; /* + * Store the original nr_events -- what userspace passed to io_setup(), + * for counting against the global limit -- before it changes. + */ + unsigned int max_reqs = nr_events; + + /* * We keep track of the number of available ringbuffer slots, to prevent * overflow (reqs_available), and we also use percpu counters for this. * @@ -724,14 +737,14 @@ static struct kioctx *ioctx_alloc(unsigned nr_events) return ERR_PTR(-EINVAL); } - if (!nr_events || (unsigned long)nr_events > (aio_max_nr * 2UL)) + if (!nr_events || (unsigned long)max_reqs > aio_max_nr) return ERR_PTR(-EAGAIN); ctx = kmem_cache_zalloc(kioctx_cachep, GFP_KERNEL); if (!ctx) return ERR_PTR(-ENOMEM); - ctx->max_reqs = nr_events; + ctx->max_reqs = max_reqs; spin_lock_init(&ctx->ctx_lock); spin_lock_init(&ctx->completion_lock); @@ -753,7 +766,7 @@ static struct kioctx *ioctx_alloc(unsigned nr_events) if (!ctx->cpu) goto err; - err = aio_setup_ring(ctx); + err = aio_setup_ring(ctx, nr_events); if (err < 0) goto err; @@ -764,8 +777,8 @@ static struct kioctx *ioctx_alloc(unsigned nr_events) /* limit the number of system wide aios */ spin_lock(&aio_nr_lock); - if (aio_nr + nr_events > (aio_max_nr * 2UL) || - aio_nr + nr_events < aio_nr) { + if (aio_nr + ctx->max_reqs > aio_max_nr || + aio_nr + ctx->max_reqs < aio_nr) { spin_unlock(&aio_nr_lock); err = -EAGAIN; goto err_ctx; diff --git a/fs/autofs4/autofs_i.h b/fs/autofs4/autofs_i.h index beef981aa54f..4737615f0eaa 100644 --- a/fs/autofs4/autofs_i.h +++ b/fs/autofs4/autofs_i.h @@ -11,10 +11,21 @@ #include <linux/auto_fs4.h> #include <linux/auto_dev-ioctl.h> + +#include <linux/kernel.h> +#include <linux/slab.h> +#include <linux/time.h> +#include <linux/string.h> +#include <linux/wait.h> +#include <linux/sched.h> +#include <linux/mount.h> +#include <linux/namei.h> +#include <linux/uaccess.h> #include <linux/mutex.h> #include <linux/spinlock.h> #include <linux/list.h> #include <linux/completion.h> +#include <asm/current.h> /* This is the range of ioctl() numbers we claim as ours */ #define AUTOFS_IOC_FIRST AUTOFS_IOC_READY @@ -24,17 +35,6 @@ #define AUTOFS_DEV_IOCTL_IOC_COUNT \ (AUTOFS_DEV_IOCTL_ISMOUNTPOINT_CMD - AUTOFS_DEV_IOCTL_VERSION_CMD) -#include <linux/kernel.h> -#include <linux/slab.h> -#include <linux/time.h> -#include <linux/string.h> -#include <linux/wait.h> -#include <linux/sched.h> -#include <linux/mount.h> -#include <linux/namei.h> -#include <asm/current.h> -#include <linux/uaccess.h> - #ifdef pr_fmt #undef pr_fmt #endif diff --git a/fs/autofs4/dev-ioctl.c b/fs/autofs4/dev-ioctl.c index dd9f1bebb5a3..b7c816f39404 100644 --- a/fs/autofs4/dev-ioctl.c +++ b/fs/autofs4/dev-ioctl.c @@ -93,17 +93,17 @@ static int check_dev_ioctl_version(int cmd, struct autofs_dev_ioctl *param) * at the end of the struct. */ static struct autofs_dev_ioctl * - copy_dev_ioctl(struct autofs_dev_ioctl __user *in) +copy_dev_ioctl(struct autofs_dev_ioctl __user *in) { struct autofs_dev_ioctl tmp, *res; - if (copy_from_user(&tmp, in, sizeof(tmp))) + if (copy_from_user(&tmp, in, AUTOFS_DEV_IOCTL_SIZE)) return ERR_PTR(-EFAULT); - if (tmp.size < sizeof(tmp)) + if (tmp.size < AUTOFS_DEV_IOCTL_SIZE) return ERR_PTR(-EINVAL); - if (tmp.size > (PATH_MAX + sizeof(tmp))) + if (tmp.size > AUTOFS_DEV_IOCTL_SIZE + PATH_MAX) return ERR_PTR(-ENAMETOOLONG); res = memdup_user(in, tmp.size); @@ -133,8 +133,8 @@ static int validate_dev_ioctl(int cmd, struct autofs_dev_ioctl *param) goto out; } - if (param->size > sizeof(*param)) { - err = invalid_str(param->path, param->size - sizeof(*param)); + if (param->size > AUTOFS_DEV_IOCTL_SIZE) { + err = invalid_str(param->path, param->size - AUTOFS_DEV_IOCTL_SIZE); if (err) { pr_warn( "path string terminator missing for cmd(0x%08x)\n", @@ -258,11 +258,6 @@ static int autofs_dev_ioctl_open_mountpoint(const char *name, dev_t devid) if (err) goto out; - /* - * Find autofs super block that has the device number - * corresponding to the autofs fs we want to open. - */ - filp = dentry_open(&path, O_RDONLY, current_cred()); path_put(&path); if (IS_ERR(filp)) { @@ -451,7 +446,7 @@ static int autofs_dev_ioctl_requester(struct file *fp, dev_t devid; int err = -ENOENT; - if (param->size <= sizeof(*param)) { + if (param->size <= AUTOFS_DEV_IOCTL_SIZE) { err = -EINVAL; goto out; } @@ -539,7 +534,7 @@ static int autofs_dev_ioctl_ismountpoint(struct file *fp, unsigned int devid, magic; int err = -ENOENT; - if (param->size <= sizeof(*param)) { + if (param->size <= AUTOFS_DEV_IOCTL_SIZE) { err = -EINVAL; goto out; } @@ -628,10 +623,6 @@ static int _autofs_dev_ioctl(unsigned int command, ioctl_fn fn = NULL; int err = 0; - /* only root can play with this */ - if (!capable(CAP_SYS_ADMIN)) - return -EPERM; - cmd_first = _IOC_NR(AUTOFS_DEV_IOCTL_IOC_FIRST); cmd = _IOC_NR(command); @@ -640,6 +631,14 @@ static int _autofs_dev_ioctl(unsigned int command, return -ENOTTY; } + /* Only root can use ioctls other than AUTOFS_DEV_IOCTL_VERSION_CMD + * and AUTOFS_DEV_IOCTL_ISMOUNTPOINT_CMD + */ + if (cmd != AUTOFS_DEV_IOCTL_VERSION_CMD && + cmd != AUTOFS_DEV_IOCTL_ISMOUNTPOINT_CMD && + !capable(CAP_SYS_ADMIN)) + return -EPERM; + /* Copy the parameters into kernel space. */ param = copy_dev_ioctl(user); if (IS_ERR(param)) @@ -706,7 +705,8 @@ out: return err; } -static long autofs_dev_ioctl(struct file *file, uint command, ulong u) +static long autofs_dev_ioctl(struct file *file, unsigned int command, + unsigned long u) { int err; @@ -715,9 +715,10 @@ static long autofs_dev_ioctl(struct file *file, uint command, ulong u) } #ifdef CONFIG_COMPAT -static long autofs_dev_ioctl_compat(struct file *file, uint command, ulong u) +static long autofs_dev_ioctl_compat(struct file *file, unsigned int command, + unsigned long u) { - return (long) autofs_dev_ioctl(file, command, (ulong) compat_ptr(u)); + return autofs_dev_ioctl(file, command, (unsigned long) compat_ptr(u)); } #else #define autofs_dev_ioctl_compat NULL @@ -733,7 +734,8 @@ static const struct file_operations _dev_ioctl_fops = { static struct miscdevice _autofs_dev_ioctl_misc = { .minor = AUTOFS_MINOR, .name = AUTOFS_DEVICE_NAME, - .fops = &_dev_ioctl_fops + .fops = &_dev_ioctl_fops, + .mode = 0644, }; MODULE_ALIAS_MISCDEV(AUTOFS_MINOR); diff --git a/fs/binfmt_elf.c b/fs/binfmt_elf.c index 879ff9c7ffd0..ec45d24875b1 100644 --- a/fs/binfmt_elf.c +++ b/fs/binfmt_elf.c @@ -252,7 +252,7 @@ create_elf_tables(struct linux_binprm *bprm, struct elfhdr *exec, NEW_AUX_ENT(AT_EUID, from_kuid_munged(cred->user_ns, cred->euid)); NEW_AUX_ENT(AT_GID, from_kgid_munged(cred->user_ns, cred->gid)); NEW_AUX_ENT(AT_EGID, from_kgid_munged(cred->user_ns, cred->egid)); - NEW_AUX_ENT(AT_SECURE, security_bprm_secureexec(bprm)); + NEW_AUX_ENT(AT_SECURE, bprm->secureexec); NEW_AUX_ENT(AT_RANDOM, (elf_addr_t)(unsigned long)u_rand_bytes); #ifdef ELF_HWCAP2 NEW_AUX_ENT(AT_HWCAP2, ELF_HWCAP2); @@ -664,8 +664,7 @@ static unsigned long randomize_stack_top(unsigned long stack_top) { unsigned long random_variable = 0; - if ((current->flags & PF_RANDOMIZE) && - !(current->personality & ADDR_NO_RANDOMIZE)) { + if (current->flags & PF_RANDOMIZE) { random_variable = get_random_long(); random_variable &= STACK_RND_MASK; random_variable <<= PAGE_SHIFT; diff --git a/fs/binfmt_elf_fdpic.c b/fs/binfmt_elf_fdpic.c index cf93a4fad012..5aa9199dfb13 100644 --- a/fs/binfmt_elf_fdpic.c +++ b/fs/binfmt_elf_fdpic.c @@ -650,7 +650,7 @@ static int create_elf_fdpic_tables(struct linux_binprm *bprm, NEW_AUX_ENT(AT_EUID, (elf_addr_t) from_kuid_munged(cred->user_ns, cred->euid)); NEW_AUX_ENT(AT_GID, (elf_addr_t) from_kgid_munged(cred->user_ns, cred->gid)); NEW_AUX_ENT(AT_EGID, (elf_addr_t) from_kgid_munged(cred->user_ns, cred->egid)); - NEW_AUX_ENT(AT_SECURE, security_bprm_secureexec(bprm)); + NEW_AUX_ENT(AT_SECURE, bprm->secureexec); NEW_AUX_ENT(AT_EXECFN, bprm->exec); #ifdef ARCH_DLINFO diff --git a/fs/binfmt_flat.c b/fs/binfmt_flat.c index a1e6860b6f46..ce6537c50ec1 100644 --- a/fs/binfmt_flat.c +++ b/fs/binfmt_flat.c @@ -192,13 +192,11 @@ static int decompress_exec( memset(&strm, 0, sizeof(strm)); strm.workspace = kmalloc(zlib_inflate_workspacesize(), GFP_KERNEL); - if (strm.workspace == NULL) { - pr_debug("no memory for decompress workspace\n"); + if (!strm.workspace) return -ENOMEM; - } + buf = kmalloc(LBUFSIZE, GFP_KERNEL); - if (buf == NULL) { - pr_debug("no memory for read buffer\n"); + if (!buf) { retval = -ENOMEM; goto out_free; } @@ -890,7 +888,7 @@ static int load_flat_shared_library(int id, struct lib_info *libs) * as we're past the point of no return and are dealing with shared * libraries. */ - bprm.cred_prepared = 1; + bprm.called_set_creds = 1; res = prepare_binprm(&bprm); diff --git a/fs/block_dev.c b/fs/block_dev.c index 9941dc8342df..bb715b2fcfb8 100644 --- a/fs/block_dev.c +++ b/fs/block_dev.c @@ -223,7 +223,7 @@ __blkdev_direct_IO_simple(struct kiocb *iocb, struct iov_iter *iter, } bio_init(&bio, vecs, nr_pages); - bio.bi_bdev = bdev; + bio_set_dev(&bio, bdev); bio.bi_iter.bi_sector = pos >> 9; bio.bi_write_hint = iocb->ki_hint; bio.bi_private = current; @@ -362,7 +362,7 @@ __blkdev_direct_IO(struct kiocb *iocb, struct iov_iter *iter, int nr_pages) blk_start_plug(&plug); for (;;) { - bio->bi_bdev = bdev; + bio_set_dev(bio, bdev); bio->bi_iter.bi_sector = pos >> 9; bio->bi_write_hint = iocb->ki_hint; bio->bi_private = dio; @@ -1451,6 +1451,7 @@ static int __blkdev_get(struct block_device *bdev, fmode_t mode, int for_part) bdev->bd_disk = disk; bdev->bd_queue = disk->queue; bdev->bd_contains = bdev; + bdev->bd_partno = partno; if (!partno) { ret = -ENXIO; diff --git a/fs/btrfs/check-integrity.c b/fs/btrfs/check-integrity.c index 7b9aabc2cb78..7d5a9b51f0d7 100644 --- a/fs/btrfs/check-integrity.c +++ b/fs/btrfs/check-integrity.c @@ -296,8 +296,7 @@ static void btrfsic_dev_state_hashtable_add( struct btrfsic_dev_state *ds, struct btrfsic_dev_state_hashtable *h); static void btrfsic_dev_state_hashtable_remove(struct btrfsic_dev_state *ds); -static struct btrfsic_dev_state *btrfsic_dev_state_hashtable_lookup( - struct block_device *bdev, +static struct btrfsic_dev_state *btrfsic_dev_state_hashtable_lookup(dev_t dev, struct btrfsic_dev_state_hashtable *h); static struct btrfsic_stack_frame *btrfsic_stack_frame_alloc(void); static void btrfsic_stack_frame_free(struct btrfsic_stack_frame *sf); @@ -385,8 +384,7 @@ static int btrfsic_process_superblock_dev_mirror( int superblock_mirror_num, struct btrfsic_dev_state **selected_dev_state, struct btrfs_super_block *selected_super); -static struct btrfsic_dev_state *btrfsic_dev_state_lookup( - struct block_device *bdev); +static struct btrfsic_dev_state *btrfsic_dev_state_lookup(dev_t dev); static void btrfsic_cmp_log_and_dev_bytenr(struct btrfsic_state *state, u64 bytenr, struct btrfsic_dev_state *dev_state, @@ -626,17 +624,15 @@ static void btrfsic_dev_state_hashtable_remove(struct btrfsic_dev_state *ds) list_del(&ds->collision_resolving_node); } -static struct btrfsic_dev_state *btrfsic_dev_state_hashtable_lookup( - struct block_device *bdev, +static struct btrfsic_dev_state *btrfsic_dev_state_hashtable_lookup(dev_t dev, struct btrfsic_dev_state_hashtable *h) { const unsigned int hashval = - (((unsigned int)((uintptr_t)bdev)) & - (BTRFSIC_DEV2STATE_HASHTABLE_SIZE - 1)); + dev & (BTRFSIC_DEV2STATE_HASHTABLE_SIZE - 1); struct btrfsic_dev_state *ds; list_for_each_entry(ds, h->table + hashval, collision_resolving_node) { - if (ds->bdev == bdev) + if (ds->bdev->bd_dev == dev) return ds; } @@ -668,7 +664,7 @@ static int btrfsic_process_superblock(struct btrfsic_state *state, if (!device->bdev || !device->name) continue; - dev_state = btrfsic_dev_state_lookup(device->bdev); + dev_state = btrfsic_dev_state_lookup(device->bdev->bd_dev); BUG_ON(NULL == dev_state); for (i = 0; i < BTRFS_SUPER_MIRROR_MAX; i++) { ret = btrfsic_process_superblock_dev_mirror( @@ -1556,7 +1552,7 @@ static int btrfsic_map_block(struct btrfsic_state *state, u64 bytenr, u32 len, } device = multi->stripes[0].dev; - block_ctx_out->dev = btrfsic_dev_state_lookup(device->bdev); + block_ctx_out->dev = btrfsic_dev_state_lookup(device->bdev->bd_dev); block_ctx_out->dev_bytenr = multi->stripes[0].physical; block_ctx_out->start = bytenr; block_ctx_out->len = len; @@ -1639,7 +1635,7 @@ static int btrfsic_read_block(struct btrfsic_state *state, unsigned int j; bio = btrfs_io_bio_alloc(num_pages - i); - bio->bi_bdev = block_ctx->dev->bdev; + bio_set_dev(bio, block_ctx->dev->bdev); bio->bi_iter.bi_sector = dev_bytenr >> 9; bio_set_op_attrs(bio, REQ_OP_READ, 0); @@ -2654,7 +2650,7 @@ static struct btrfsic_block *btrfsic_block_lookup_or_add( pr_info("btrfsic: error, kmalloc failed!\n"); return NULL; } - dev_state = btrfsic_dev_state_lookup(block_ctx->dev->bdev); + dev_state = btrfsic_dev_state_lookup(block_ctx->dev->bdev->bd_dev); if (NULL == dev_state) { pr_info("btrfsic: error, lookup dev_state failed!\n"); btrfsic_block_free(block); @@ -2734,10 +2730,9 @@ static void btrfsic_cmp_log_and_dev_bytenr(struct btrfsic_state *state, } } -static struct btrfsic_dev_state *btrfsic_dev_state_lookup( - struct block_device *bdev) +static struct btrfsic_dev_state *btrfsic_dev_state_lookup(dev_t dev) { - return btrfsic_dev_state_hashtable_lookup(bdev, + return btrfsic_dev_state_hashtable_lookup(dev, &btrfsic_dev_state_hashtable); } @@ -2751,7 +2746,7 @@ int btrfsic_submit_bh(int op, int op_flags, struct buffer_head *bh) mutex_lock(&btrfsic_mutex); /* since btrfsic_submit_bh() might also be called before * btrfsic_mount(), this might return NULL */ - dev_state = btrfsic_dev_state_lookup(bh->b_bdev); + dev_state = btrfsic_dev_state_lookup(bh->b_bdev->bd_dev); /* Only called to write the superblock (incl. FLUSH/FUA) */ if (NULL != dev_state && @@ -2808,7 +2803,7 @@ static void __btrfsic_submit_bio(struct bio *bio) mutex_lock(&btrfsic_mutex); /* since btrfsic_submit_bio() is also called before * btrfsic_mount(), this might return NULL */ - dev_state = btrfsic_dev_state_lookup(bio->bi_bdev); + dev_state = btrfsic_dev_state_lookup(bio_dev(bio)); if (NULL != dev_state && (bio_op(bio) == REQ_OP_WRITE) && bio_has_data(bio)) { unsigned int i = 0; @@ -2824,10 +2819,10 @@ static void __btrfsic_submit_bio(struct bio *bio) bio_is_patched = 0; if (dev_state->state->print_mask & BTRFSIC_PRINT_MASK_SUBMIT_BIO_BH) - pr_info("submit_bio(rw=%d,0x%x, bi_vcnt=%u, bi_sector=%llu (bytenr %llu), bi_bdev=%p)\n", + pr_info("submit_bio(rw=%d,0x%x, bi_vcnt=%u, bi_sector=%llu (bytenr %llu), bi_disk=%p)\n", bio_op(bio), bio->bi_opf, segs, (unsigned long long)bio->bi_iter.bi_sector, - dev_bytenr, bio->bi_bdev); + dev_bytenr, bio->bi_disk); mapped_datav = kmalloc_array(segs, sizeof(*mapped_datav), GFP_NOFS); @@ -2856,8 +2851,8 @@ static void __btrfsic_submit_bio(struct bio *bio) } else if (NULL != dev_state && (bio->bi_opf & REQ_PREFLUSH)) { if (dev_state->state->print_mask & BTRFSIC_PRINT_MASK_SUBMIT_BIO_BH) - pr_info("submit_bio(rw=%d,0x%x FLUSH, bdev=%p)\n", - bio_op(bio), bio->bi_opf, bio->bi_bdev); + pr_info("submit_bio(rw=%d,0x%x FLUSH, disk=%p)\n", + bio_op(bio), bio->bi_opf, bio->bi_disk); if (!dev_state->dummy_block_for_bio_bh_flush.is_iodone) { if ((dev_state->state->print_mask & (BTRFSIC_PRINT_MASK_SUBMIT_BIO_BH | @@ -2998,7 +2993,7 @@ void btrfsic_unmount(struct btrfs_fs_devices *fs_devices) continue; ds = btrfsic_dev_state_hashtable_lookup( - device->bdev, + device->bdev->bd_dev, &btrfsic_dev_state_hashtable); if (NULL != ds) { state = ds->state; diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c index 27d458640536..46329524dd5f 100644 --- a/fs/btrfs/disk-io.c +++ b/fs/btrfs/disk-io.c @@ -3511,7 +3511,7 @@ static void write_dev_flush(struct btrfs_device *device) bio_reset(bio); bio->bi_end_io = btrfs_end_empty_barrier; - bio->bi_bdev = device->bdev; + bio_set_dev(bio, device->bdev); bio->bi_opf = REQ_OP_WRITE | REQ_SYNC | REQ_PREFLUSH; init_completion(&device->flush_wait); bio->bi_private = &device->flush_wait; @@ -3528,7 +3528,7 @@ static blk_status_t wait_dev_flush(struct btrfs_device *device) struct bio *bio = device->flush_bio; if (!device->flush_bio_sent) - return 0; + return BLK_STS_OK; device->flush_bio_sent = 0; wait_for_completion_io(&device->flush_wait); @@ -3565,7 +3565,7 @@ static int barrier_all_devices(struct btrfs_fs_info *info) continue; write_dev_flush(dev); - dev->last_flush_error = 0; + dev->last_flush_error = BLK_STS_OK; } /* wait for all the barriers */ diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c index d17783d70228..0f077c5db58e 100644 --- a/fs/btrfs/extent_io.c +++ b/fs/btrfs/extent_io.c @@ -2032,7 +2032,7 @@ int repair_io_failure(struct btrfs_fs_info *fs_info, u64 ino, u64 start, bio_put(bio); return -EIO; } - bio->bi_bdev = dev->bdev; + bio_set_dev(bio, dev->bdev); bio->bi_opf = REQ_OP_WRITE | REQ_SYNC; bio_add_page(bio, page, length, pg_offset); @@ -2334,7 +2334,7 @@ struct bio *btrfs_create_repair_bio(struct inode *inode, struct bio *failed_bio, bio = btrfs_io_bio_alloc(1); bio->bi_end_io = endio_func; bio->bi_iter.bi_sector = failrec->logical >> 9; - bio->bi_bdev = fs_info->fs_devices->latest_bdev; + bio_set_dev(bio, fs_info->fs_devices->latest_bdev); bio->bi_iter.bi_size = 0; bio->bi_private = data; @@ -2674,7 +2674,7 @@ struct bio *btrfs_bio_alloc(struct block_device *bdev, u64 first_byte) struct bio *bio; bio = bio_alloc_bioset(GFP_NOFS, BIO_MAX_PAGES, btrfs_bioset); - bio->bi_bdev = bdev; + bio_set_dev(bio, bdev); bio->bi_iter.bi_sector = first_byte >> 9; btrfs_io_bio_init(btrfs_io_bio(bio)); return bio; diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c index d184a46e46c4..17ad018da0a2 100644 --- a/fs/btrfs/inode.c +++ b/fs/btrfs/inode.c @@ -8014,11 +8014,12 @@ err: return ret; } -static inline int submit_dio_repair_bio(struct inode *inode, struct bio *bio, - int mirror_num) +static inline blk_status_t submit_dio_repair_bio(struct inode *inode, + struct bio *bio, + int mirror_num) { struct btrfs_fs_info *fs_info = btrfs_sb(inode->i_sb); - int ret; + blk_status_t ret; BUG_ON(bio_op(bio) == REQ_OP_WRITE); @@ -8070,10 +8071,10 @@ static int btrfs_check_dio_repairable(struct inode *inode, return 1; } -static int dio_read_error(struct inode *inode, struct bio *failed_bio, - struct page *page, unsigned int pgoff, - u64 start, u64 end, int failed_mirror, - bio_end_io_t *repair_endio, void *repair_arg) +static blk_status_t dio_read_error(struct inode *inode, struct bio *failed_bio, + struct page *page, unsigned int pgoff, + u64 start, u64 end, int failed_mirror, + bio_end_io_t *repair_endio, void *repair_arg) { struct io_failure_record *failrec; struct extent_io_tree *io_tree = &BTRFS_I(inode)->io_tree; @@ -8083,18 +8084,19 @@ static int dio_read_error(struct inode *inode, struct bio *failed_bio, unsigned int read_mode = 0; int segs; int ret; + blk_status_t status; BUG_ON(bio_op(failed_bio) == REQ_OP_WRITE); ret = btrfs_get_io_failure_record(inode, start, end, &failrec); if (ret) - return ret; + return errno_to_blk_status(ret); ret = btrfs_check_dio_repairable(inode, failed_bio, failrec, failed_mirror); if (!ret) { free_io_failure(failure_tree, io_tree, failrec); - return -EIO; + return BLK_STS_IOERR; } segs = bio_segments(failed_bio); @@ -8112,13 +8114,13 @@ static int dio_read_error(struct inode *inode, struct bio *failed_bio, "repair DIO read error: submitting new dio read[%#x] to this_mirror=%d, in_validation=%d", read_mode, failrec->this_mirror, failrec->in_validation); - ret = submit_dio_repair_bio(inode, bio, failrec->this_mirror); - if (ret) { + status = submit_dio_repair_bio(inode, bio, failrec->this_mirror); + if (status) { free_io_failure(failure_tree, io_tree, failrec); bio_put(bio); } - return ret; + return status; } struct btrfs_retry_complete { @@ -8155,8 +8157,8 @@ end: bio_put(bio); } -static int __btrfs_correct_data_nocsum(struct inode *inode, - struct btrfs_io_bio *io_bio) +static blk_status_t __btrfs_correct_data_nocsum(struct inode *inode, + struct btrfs_io_bio *io_bio) { struct btrfs_fs_info *fs_info; struct bio_vec bvec; @@ -8166,8 +8168,8 @@ static int __btrfs_correct_data_nocsum(struct inode *inode, unsigned int pgoff; u32 sectorsize; int nr_sectors; - int ret; - int err = 0; + blk_status_t ret; + blk_status_t err = BLK_STS_OK; fs_info = BTRFS_I(inode)->root->fs_info; sectorsize = fs_info->sectorsize; @@ -8273,11 +8275,12 @@ static blk_status_t __btrfs_subio_endio_read(struct inode *inode, int csum_pos; bool uptodate = (err == 0); int ret; + blk_status_t status; fs_info = BTRFS_I(inode)->root->fs_info; sectorsize = fs_info->sectorsize; - err = 0; + err = BLK_STS_OK; start = io_bio->logical; done.inode = inode; io_bio->bio.bi_iter = io_bio->iter; @@ -8299,12 +8302,12 @@ try_again: done.start = start; init_completion(&done.done); - ret = dio_read_error(inode, &io_bio->bio, bvec.bv_page, - pgoff, start, start + sectorsize - 1, - io_bio->mirror_num, - btrfs_retry_endio, &done); - if (ret) { - err = errno_to_blk_status(ret); + status = dio_read_error(inode, &io_bio->bio, bvec.bv_page, + pgoff, start, start + sectorsize - 1, + io_bio->mirror_num, btrfs_retry_endio, + &done); + if (status) { + err = status; goto next; } @@ -8340,7 +8343,7 @@ static blk_status_t btrfs_subio_endio_read(struct inode *inode, if (unlikely(err)) return __btrfs_correct_data_nocsum(inode, io_bio); else - return 0; + return BLK_STS_OK; } else { return __btrfs_subio_endio_read(inode, io_bio, err); } @@ -8513,8 +8516,9 @@ static inline blk_status_t btrfs_lookup_and_bind_dio_csum(struct inode *inode, return 0; } -static inline int __btrfs_submit_dio_bio(struct bio *bio, struct inode *inode, - u64 file_offset, int async_submit) +static inline blk_status_t +__btrfs_submit_dio_bio(struct bio *bio, struct inode *inode, u64 file_offset, + int async_submit) { struct btrfs_fs_info *fs_info = btrfs_sb(inode->i_sb); struct btrfs_dio_private *dip = bio->bi_private; @@ -8576,6 +8580,7 @@ static int btrfs_submit_direct_hook(struct btrfs_dio_private *dip) int clone_offset = 0; int clone_len; int ret; + blk_status_t status; map_length = orig_bio->bi_iter.bi_size; submit_len = map_length; @@ -8625,9 +8630,9 @@ static int btrfs_submit_direct_hook(struct btrfs_dio_private *dip) */ atomic_inc(&dip->pending_bios); - ret = __btrfs_submit_dio_bio(bio, inode, file_offset, - async_submit); - if (ret) { + status = __btrfs_submit_dio_bio(bio, inode, file_offset, + async_submit); + if (status) { bio_put(bio); atomic_dec(&dip->pending_bios); goto out_err; @@ -8645,8 +8650,8 @@ static int btrfs_submit_direct_hook(struct btrfs_dio_private *dip) } while (submit_len > 0); submit: - ret = __btrfs_submit_dio_bio(bio, inode, file_offset, async_submit); - if (!ret) + status = __btrfs_submit_dio_bio(bio, inode, file_offset, async_submit); + if (!status) return 0; bio_put(bio); diff --git a/fs/btrfs/raid56.c b/fs/btrfs/raid56.c index 208638384cd2..24a62224b24b 100644 --- a/fs/btrfs/raid56.c +++ b/fs/btrfs/raid56.c @@ -905,7 +905,7 @@ static void raid_write_end_io(struct bio *bio) if (!atomic_dec_and_test(&rbio->stripes_pending)) return; - err = 0; + err = BLK_STS_OK; /* OK, we have read all the stripes we need to. */ max_errors = (rbio->operation == BTRFS_RBIO_PARITY_SCRUB) ? @@ -1090,7 +1090,8 @@ static int rbio_add_io_page(struct btrfs_raid_bio *rbio, */ if (last_end == disk_start && stripe->dev->bdev && !last->bi_status && - last->bi_bdev == stripe->dev->bdev) { + last->bi_disk == stripe->dev->bdev->bd_disk && + last->bi_partno == stripe->dev->bdev->bd_partno) { ret = bio_add_page(last, page, PAGE_SIZE, 0); if (ret == PAGE_SIZE) return 0; @@ -1100,7 +1101,7 @@ static int rbio_add_io_page(struct btrfs_raid_bio *rbio, /* put a new bio on the list */ bio = btrfs_io_bio_alloc(bio_max_len >> PAGE_SHIFT ?: 1); bio->bi_iter.bi_size = 0; - bio->bi_bdev = stripe->dev->bdev; + bio_set_dev(bio, stripe->dev->bdev); bio->bi_iter.bi_sector = disk_start >> 9; bio_add_page(bio, page, PAGE_SIZE, 0); @@ -1324,7 +1325,7 @@ write_data: return; cleanup: - rbio_orig_end_io(rbio, -EIO); + rbio_orig_end_io(rbio, BLK_STS_IOERR); } /* @@ -1347,7 +1348,8 @@ static int find_bio_stripe(struct btrfs_raid_bio *rbio, stripe_start = stripe->physical; if (physical >= stripe_start && physical < stripe_start + rbio->stripe_len && - bio->bi_bdev == stripe->dev->bdev) { + bio->bi_disk == stripe->dev->bdev->bd_disk && + bio->bi_partno == stripe->dev->bdev->bd_partno) { return i; } } @@ -1475,7 +1477,7 @@ static void raid_rmw_end_io(struct bio *bio) cleanup: - rbio_orig_end_io(rbio, -EIO); + rbio_orig_end_io(rbio, BLK_STS_IOERR); } static void async_rmw_stripe(struct btrfs_raid_bio *rbio) @@ -1579,7 +1581,7 @@ static int raid56_rmw_stripe(struct btrfs_raid_bio *rbio) return 0; cleanup: - rbio_orig_end_io(rbio, -EIO); + rbio_orig_end_io(rbio, BLK_STS_IOERR); return -EIO; finish: @@ -1795,12 +1797,12 @@ static void __raid_recover_end_io(struct btrfs_raid_bio *rbio) void **pointers; int faila = -1, failb = -1; struct page *page; - int err; + blk_status_t err; int i; pointers = kcalloc(rbio->real_stripes, sizeof(void *), GFP_NOFS); if (!pointers) { - err = -ENOMEM; + err = BLK_STS_RESOURCE; goto cleanup_io; } @@ -1856,7 +1858,7 @@ static void __raid_recover_end_io(struct btrfs_raid_bio *rbio) * a bad data or Q stripe. * TODO, we should redo the xor here. */ - err = -EIO; + err = BLK_STS_IOERR; goto cleanup; } /* @@ -1882,7 +1884,7 @@ static void __raid_recover_end_io(struct btrfs_raid_bio *rbio) if (rbio->bbio->raid_map[failb] == RAID6_Q_STRIPE) { if (rbio->bbio->raid_map[faila] == RAID5_P_STRIPE) { - err = -EIO; + err = BLK_STS_IOERR; goto cleanup; } /* @@ -1954,13 +1956,13 @@ pstripe: } } - err = 0; + err = BLK_STS_OK; cleanup: kfree(pointers); cleanup_io: if (rbio->operation == BTRFS_RBIO_READ_REBUILD) { - if (err == 0) + if (err == BLK_STS_OK) cache_rbio_pages(rbio); else clear_bit(RBIO_CACHE_READY_BIT, &rbio->flags); @@ -1968,7 +1970,7 @@ cleanup_io: rbio_orig_end_io(rbio, err); } else if (rbio->operation == BTRFS_RBIO_REBUILD_MISSING) { rbio_orig_end_io(rbio, err); - } else if (err == 0) { + } else if (err == BLK_STS_OK) { rbio->faila = -1; rbio->failb = -1; @@ -2005,7 +2007,7 @@ static void raid_recover_end_io(struct bio *bio) return; if (atomic_read(&rbio->error) > rbio->bbio->max_errors) - rbio_orig_end_io(rbio, -EIO); + rbio_orig_end_io(rbio, BLK_STS_IOERR); else __raid_recover_end_io(rbio); } @@ -2104,7 +2106,7 @@ out: cleanup: if (rbio->operation == BTRFS_RBIO_READ_REBUILD || rbio->operation == BTRFS_RBIO_REBUILD_MISSING) - rbio_orig_end_io(rbio, -EIO); + rbio_orig_end_io(rbio, BLK_STS_IOERR); return -EIO; } @@ -2431,7 +2433,7 @@ submit_write: nr_data = bio_list_size(&bio_list); if (!nr_data) { /* Every parity is right */ - rbio_orig_end_io(rbio, 0); + rbio_orig_end_io(rbio, BLK_STS_OK); return; } @@ -2451,7 +2453,7 @@ submit_write: return; cleanup: - rbio_orig_end_io(rbio, -EIO); + rbio_orig_end_io(rbio, BLK_STS_IOERR); } static inline int is_data_stripe(struct btrfs_raid_bio *rbio, int stripe) @@ -2519,7 +2521,7 @@ static void validate_rbio_for_parity_scrub(struct btrfs_raid_bio *rbio) return; cleanup: - rbio_orig_end_io(rbio, -EIO); + rbio_orig_end_io(rbio, BLK_STS_IOERR); } /* @@ -2633,7 +2635,7 @@ static void raid56_parity_scrub_stripe(struct btrfs_raid_bio *rbio) return; cleanup: - rbio_orig_end_io(rbio, -EIO); + rbio_orig_end_io(rbio, BLK_STS_IOERR); return; finish: diff --git a/fs/btrfs/scrub.c b/fs/btrfs/scrub.c index 7c9c82bb6255..e3f6c49e5c4d 100644 --- a/fs/btrfs/scrub.c +++ b/fs/btrfs/scrub.c @@ -1738,7 +1738,7 @@ static void scrub_recheck_block(struct btrfs_fs_info *fs_info, WARN_ON(!page->page); bio = btrfs_io_bio_alloc(1); - bio->bi_bdev = page->dev->bdev; + bio_set_dev(bio, page->dev->bdev); bio_add_page(bio, page->page, PAGE_SIZE, 0); if (!retry_failed_mirror && scrub_is_page_on_raid56(page)) { @@ -1826,7 +1826,7 @@ static int scrub_repair_page_from_good_copy(struct scrub_block *sblock_bad, } bio = btrfs_io_bio_alloc(1); - bio->bi_bdev = page_bad->dev->bdev; + bio_set_dev(bio, page_bad->dev->bdev); bio->bi_iter.bi_sector = page_bad->physical >> 9; bio_set_op_attrs(bio, REQ_OP_WRITE, 0); @@ -1921,7 +1921,7 @@ again: bio->bi_private = sbio; bio->bi_end_io = scrub_wr_bio_end_io; - bio->bi_bdev = sbio->dev->bdev; + bio_set_dev(bio, sbio->dev->bdev); bio->bi_iter.bi_sector = sbio->physical >> 9; bio_set_op_attrs(bio, REQ_OP_WRITE, 0); sbio->status = 0; @@ -1964,7 +1964,7 @@ static void scrub_wr_submit(struct scrub_ctx *sctx) sbio = sctx->wr_curr_bio; sctx->wr_curr_bio = NULL; - WARN_ON(!sbio->bio->bi_bdev); + WARN_ON(!sbio->bio->bi_disk); scrub_pending_bio_inc(sctx); /* process all writes in a single worker thread. Then the block layer * orders the requests before sending them to the driver which @@ -2321,7 +2321,7 @@ again: bio->bi_private = sbio; bio->bi_end_io = scrub_bio_end_io; - bio->bi_bdev = sbio->dev->bdev; + bio_set_dev(bio, sbio->dev->bdev); bio->bi_iter.bi_sector = sbio->physical >> 9; bio_set_op_attrs(bio, REQ_OP_READ, 0); sbio->status = 0; @@ -4624,7 +4624,7 @@ static int write_page_nocow(struct scrub_ctx *sctx, bio = btrfs_io_bio_alloc(1); bio->bi_iter.bi_size = 0; bio->bi_iter.bi_sector = physical_for_dev_replace >> 9; - bio->bi_bdev = dev->bdev; + bio_set_dev(bio, dev->bdev); bio->bi_opf = REQ_OP_WRITE | REQ_SYNC; ret = bio_add_page(bio, page, PAGE_SIZE, 0); if (ret != PAGE_SIZE) { diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c index d024f1b07282..c188256a367c 100644 --- a/fs/btrfs/volumes.c +++ b/fs/btrfs/volumes.c @@ -6125,7 +6125,7 @@ static void submit_stripe_bio(struct btrfs_bio *bbio, struct bio *bio, rcu_read_unlock(); } #endif - bio->bi_bdev = dev->bdev; + bio_set_dev(bio, dev->bdev); btrfs_bio_counter_inc_noblocked(fs_info); @@ -6149,8 +6149,8 @@ static void bbio_error(struct btrfs_bio *bbio, struct bio *bio, u64 logical) } } -int btrfs_map_bio(struct btrfs_fs_info *fs_info, struct bio *bio, - int mirror_num, int async_submit) +blk_status_t btrfs_map_bio(struct btrfs_fs_info *fs_info, struct bio *bio, + int mirror_num, int async_submit) { struct btrfs_device *dev; struct bio *first_bio = bio; @@ -6170,7 +6170,7 @@ int btrfs_map_bio(struct btrfs_fs_info *fs_info, struct bio *bio, &map_length, &bbio, mirror_num, 1); if (ret) { btrfs_bio_counter_dec(fs_info); - return ret; + return errno_to_blk_status(ret); } total_devs = bbio->num_stripes; @@ -6193,7 +6193,7 @@ int btrfs_map_bio(struct btrfs_fs_info *fs_info, struct bio *bio, } btrfs_bio_counter_dec(fs_info); - return ret; + return errno_to_blk_status(ret); } if (map_length < length) { @@ -6220,7 +6220,7 @@ int btrfs_map_bio(struct btrfs_fs_info *fs_info, struct bio *bio, dev_nr, async_submit); } btrfs_bio_counter_dec(fs_info); - return 0; + return BLK_STS_OK; } struct btrfs_device *btrfs_find_device(struct btrfs_fs_info *fs_info, u64 devid, diff --git a/fs/btrfs/volumes.h b/fs/btrfs/volumes.h index eebe2f871dc7..6108fdfec67f 100644 --- a/fs/btrfs/volumes.h +++ b/fs/btrfs/volumes.h @@ -74,7 +74,7 @@ struct btrfs_device { int missing; int can_discard; int is_tgtdev_for_dev_replace; - int last_flush_error; + blk_status_t last_flush_error; int flush_bio_sent; #ifdef __BTRFS_NEED_DEVICE_DATA_ORDERED @@ -415,8 +415,8 @@ int btrfs_alloc_chunk(struct btrfs_trans_handle *trans, struct btrfs_fs_info *fs_info, u64 type); void btrfs_mapping_init(struct btrfs_mapping_tree *tree); void btrfs_mapping_tree_free(struct btrfs_mapping_tree *tree); -int btrfs_map_bio(struct btrfs_fs_info *fs_info, struct bio *bio, - int mirror_num, int async_submit); +blk_status_t btrfs_map_bio(struct btrfs_fs_info *fs_info, struct bio *bio, + int mirror_num, int async_submit); int btrfs_open_devices(struct btrfs_fs_devices *fs_devices, fmode_t flags, void *holder); int btrfs_scan_one_device(const char *path, fmode_t flags, void *holder, diff --git a/fs/buffer.c b/fs/buffer.c index 5715dac7821f..170df856bdb9 100644 --- a/fs/buffer.c +++ b/fs/buffer.c @@ -1627,20 +1627,17 @@ void clean_bdev_aliases(struct block_device *bdev, sector_t block, sector_t len) struct pagevec pvec; pgoff_t index = block >> (PAGE_SHIFT - bd_inode->i_blkbits); pgoff_t end; - int i; + int i, count; struct buffer_head *bh; struct buffer_head *head; end = (block + len - 1) >> (PAGE_SHIFT - bd_inode->i_blkbits); pagevec_init(&pvec, 0); - while (index <= end && pagevec_lookup(&pvec, bd_mapping, index, - min(end - index, (pgoff_t)PAGEVEC_SIZE - 1) + 1)) { - for (i = 0; i < pagevec_count(&pvec); i++) { + while (pagevec_lookup_range(&pvec, bd_mapping, &index, end)) { + count = pagevec_count(&pvec); + for (i = 0; i < count; i++) { struct page *page = pvec.pages[i]; - index = page->index; - if (index > end) - break; if (!page_has_buffers(page)) continue; /* @@ -1670,7 +1667,9 @@ unlock_page: } pagevec_release(&pvec); cond_resched(); - index++; + /* End of range already reached? */ + if (index > end || !index) + break; } } EXPORT_SYMBOL(clean_bdev_aliases); @@ -3057,7 +3056,7 @@ void guard_bio_eod(int op, struct bio *bio) struct bio_vec *bvec = &bio->bi_io_vec[bio->bi_vcnt - 1]; unsigned truncated_bytes; - maxsector = i_size_read(bio->bi_bdev->bd_inode) >> 9; + maxsector = get_capacity(bio->bi_disk); if (!maxsector) return; @@ -3116,7 +3115,7 @@ static int submit_bh_wbc(int op, int op_flags, struct buffer_head *bh, } bio->bi_iter.bi_sector = bh->b_blocknr * (bh->b_size >> 9); - bio->bi_bdev = bh->b_bdev; + bio_set_dev(bio, bh->b_bdev); bio->bi_write_hint = write_hint; bio_add_page(bio, bh->b_page, bh->b_size, bh_offset(bh)); @@ -3549,10 +3548,10 @@ page_cache_seek_hole_data(struct inode *inode, loff_t offset, loff_t length, pagevec_init(&pvec, 0); do { - unsigned want, nr_pages, i; + unsigned nr_pages, i; - want = min_t(unsigned, end - index, PAGEVEC_SIZE); - nr_pages = pagevec_lookup(&pvec, inode->i_mapping, index, want); + nr_pages = pagevec_lookup_range(&pvec, inode->i_mapping, &index, + end - 1); if (nr_pages == 0) break; @@ -3573,10 +3572,6 @@ page_cache_seek_hole_data(struct inode *inode, loff_t offset, loff_t length, lastoff < page_offset(page)) goto check_range; - /* Searching done if the page index is out of range. */ - if (page->index >= end) - goto not_found; - lock_page(page); if (likely(page->mapping == inode->i_mapping) && page_has_buffers(page)) { @@ -3589,12 +3584,6 @@ page_cache_seek_hole_data(struct inode *inode, loff_t offset, loff_t length, unlock_page(page); lastoff = page_offset(page) + PAGE_SIZE; } - - /* Searching done if fewer pages returned than wanted. */ - if (nr_pages < want) - break; - - index = pvec.pages[i - 1]->index + 1; pagevec_release(&pvec); } while (index < end); diff --git a/fs/ceph/addr.c b/fs/ceph/addr.c index 50836280a6f8..1bc709fe330a 100644 --- a/fs/ceph/addr.c +++ b/fs/ceph/addr.c @@ -189,7 +189,7 @@ static int ceph_releasepage(struct page *page, gfp_t g) /* * read a single page, without unlocking it. */ -static int readpage_nounlock(struct file *filp, struct page *page) +static int ceph_do_readpage(struct file *filp, struct page *page) { struct inode *inode = file_inode(filp); struct ceph_inode_info *ci = ceph_inode(inode); @@ -219,7 +219,7 @@ static int readpage_nounlock(struct file *filp, struct page *page) err = ceph_readpage_from_fscache(inode, page); if (err == 0) - goto out; + return -EINPROGRESS; dout("readpage inode %p file %p page %p index %lu\n", inode, filp, page, page->index); @@ -249,8 +249,11 @@ out: static int ceph_readpage(struct file *filp, struct page *page) { - int r = readpage_nounlock(filp, page); - unlock_page(page); + int r = ceph_do_readpage(filp, page); + if (r != -EINPROGRESS) + unlock_page(page); + else + r = 0; return r; } @@ -1237,7 +1240,7 @@ retry_locked: goto retry_locked; r = writepage_nounlock(page, NULL); if (r < 0) - goto fail_nosnap; + goto fail_unlock; goto retry_locked; } @@ -1265,11 +1268,14 @@ retry_locked: } /* we need to read it. */ - r = readpage_nounlock(file, page); - if (r < 0) - goto fail_nosnap; + r = ceph_do_readpage(file, page); + if (r < 0) { + if (r == -EINPROGRESS) + return -EAGAIN; + goto fail_unlock; + } goto retry_locked; -fail_nosnap: +fail_unlock: unlock_page(page); return r; } diff --git a/fs/ceph/cache.c b/fs/ceph/cache.c index fd1172823f86..174d6e6569a8 100644 --- a/fs/ceph/cache.c +++ b/fs/ceph/cache.c @@ -194,36 +194,6 @@ static enum fscache_checkaux ceph_fscache_inode_check_aux( return FSCACHE_CHECKAUX_OKAY; } -static void ceph_fscache_inode_now_uncached(void* cookie_netfs_data) -{ - struct ceph_inode_info* ci = cookie_netfs_data; - struct pagevec pvec; - pgoff_t first; - int loop, nr_pages; - - pagevec_init(&pvec, 0); - first = 0; - - dout("ceph inode 0x%p now uncached", ci); - - while (1) { - nr_pages = pagevec_lookup(&pvec, ci->vfs_inode.i_mapping, first, - PAGEVEC_SIZE - pagevec_count(&pvec)); - - if (!nr_pages) - break; - - for (loop = 0; loop < nr_pages; loop++) - ClearPageFsCache(pvec.pages[loop]); - - first = pvec.pages[nr_pages - 1]->index + 1; - - pvec.nr = nr_pages; - pagevec_release(&pvec); - cond_resched(); - } -} - static const struct fscache_cookie_def ceph_fscache_inode_object_def = { .name = "CEPH.inode", .type = FSCACHE_COOKIE_TYPE_DATAFILE, @@ -231,7 +201,6 @@ static const struct fscache_cookie_def ceph_fscache_inode_object_def = { .get_attr = ceph_fscache_inode_get_attr, .get_aux = ceph_fscache_inode_get_aux, .check_aux = ceph_fscache_inode_check_aux, - .now_uncached = ceph_fscache_inode_now_uncached, }; void ceph_fscache_register_inode_cookie(struct inode *inode) @@ -297,13 +266,7 @@ void ceph_fscache_file_set_cookie(struct inode *inode, struct file *filp) } } -static void ceph_vfs_readpage_complete(struct page *page, void *data, int error) -{ - if (!error) - SetPageUptodate(page); -} - -static void ceph_vfs_readpage_complete_unlock(struct page *page, void *data, int error) +static void ceph_readpage_from_fscache_complete(struct page *page, void *data, int error) { if (!error) SetPageUptodate(page); @@ -331,7 +294,7 @@ int ceph_readpage_from_fscache(struct inode *inode, struct page *page) return -ENOBUFS; ret = fscache_read_or_alloc_page(ci->fscache, page, - ceph_vfs_readpage_complete, NULL, + ceph_readpage_from_fscache_complete, NULL, GFP_KERNEL); switch (ret) { @@ -360,7 +323,7 @@ int ceph_readpages_from_fscache(struct inode *inode, return -ENOBUFS; ret = fscache_read_or_alloc_pages(ci->fscache, mapping, pages, nr_pages, - ceph_vfs_readpage_complete_unlock, + ceph_readpage_from_fscache_complete, NULL, mapping_gfp_mask(mapping)); switch (ret) { diff --git a/fs/ceph/locks.c b/fs/ceph/locks.c index 64ae74472046..8cd63e8123d8 100644 --- a/fs/ceph/locks.c +++ b/fs/ceph/locks.c @@ -79,7 +79,7 @@ static int ceph_lock_message(u8 lock_type, u16 operation, struct file *file, err = ceph_mdsc_do_request(mdsc, inode, req); if (operation == CEPH_MDS_OP_GETFILELOCK) { - fl->fl_pid = le64_to_cpu(req->r_reply_info.filelock_reply->pid); + fl->fl_pid = -le64_to_cpu(req->r_reply_info.filelock_reply->pid); if (CEPH_LOCK_SHARED == req->r_reply_info.filelock_reply->type) fl->fl_type = F_RDLCK; else if (CEPH_LOCK_EXCL == req->r_reply_info.filelock_reply->type) diff --git a/fs/char_dev.c b/fs/char_dev.c index fb8507f521b2..ebcc8fb3fa66 100644 --- a/fs/char_dev.c +++ b/fs/char_dev.c @@ -28,6 +28,8 @@ static struct kobj_map *cdev_map; static DEFINE_MUTEX(chrdevs_lock); +#define CHRDEV_MAJOR_HASH_SIZE 255 + static struct char_device_struct { struct char_device_struct *next; unsigned int major; @@ -49,16 +51,39 @@ void chrdev_show(struct seq_file *f, off_t offset) { struct char_device_struct *cd; - if (offset < CHRDEV_MAJOR_HASH_SIZE) { - mutex_lock(&chrdevs_lock); - for (cd = chrdevs[offset]; cd; cd = cd->next) + mutex_lock(&chrdevs_lock); + for (cd = chrdevs[major_to_index(offset)]; cd; cd = cd->next) { + if (cd->major == offset) seq_printf(f, "%3d %s\n", cd->major, cd->name); - mutex_unlock(&chrdevs_lock); } + mutex_unlock(&chrdevs_lock); } #endif /* CONFIG_PROC_FS */ +static int find_dynamic_major(void) +{ + int i; + struct char_device_struct *cd; + + for (i = ARRAY_SIZE(chrdevs)-1; i > CHRDEV_MAJOR_DYN_END; i--) { + if (chrdevs[i] == NULL) + return i; + } + + for (i = CHRDEV_MAJOR_DYN_EXT_START; + i > CHRDEV_MAJOR_DYN_EXT_END; i--) { + for (cd = chrdevs[major_to_index(i)]; cd; cd = cd->next) + if (cd->major == i) + break; + + if (cd == NULL || cd->major != i) + return i; + } + + return -EBUSY; +} + /* * Register a single major with a specified minor range. * @@ -84,22 +109,21 @@ __register_chrdev_region(unsigned int major, unsigned int baseminor, mutex_lock(&chrdevs_lock); - /* temporary */ if (major == 0) { - for (i = ARRAY_SIZE(chrdevs)-1; i > 0; i--) { - if (chrdevs[i] == NULL) - break; - } - - if (i < CHRDEV_MAJOR_DYN_END) - pr_warn("CHRDEV \"%s\" major number %d goes below the dynamic allocation range\n", - name, i); - - if (i == 0) { - ret = -EBUSY; + ret = find_dynamic_major(); + if (ret < 0) { + pr_err("CHRDEV \"%s\" dynamic allocation region is full\n", + name); goto out; } - major = i; + major = ret; + } + + if (major >= CHRDEV_MAJOR_MAX) { + pr_err("CHRDEV \"%s\" major requested (%d) is greater than the maximum (%d)\n", + name, major, CHRDEV_MAJOR_MAX); + ret = -EINVAL; + goto out; } cd->major = major; diff --git a/fs/cifs/cache.c b/fs/cifs/cache.c index 6c665bf4a27c..2c14020e5e1d 100644 --- a/fs/cifs/cache.c +++ b/fs/cifs/cache.c @@ -292,36 +292,6 @@ fscache_checkaux cifs_fscache_inode_check_aux(void *cookie_netfs_data, return FSCACHE_CHECKAUX_OKAY; } -static void cifs_fscache_inode_now_uncached(void *cookie_netfs_data) -{ - struct cifsInodeInfo *cifsi = cookie_netfs_data; - struct pagevec pvec; - pgoff_t first; - int loop, nr_pages; - - pagevec_init(&pvec, 0); - first = 0; - - cifs_dbg(FYI, "%s: cifs inode 0x%p now uncached\n", __func__, cifsi); - - for (;;) { - nr_pages = pagevec_lookup(&pvec, - cifsi->vfs_inode.i_mapping, first, - PAGEVEC_SIZE - pagevec_count(&pvec)); - if (!nr_pages) - break; - - for (loop = 0; loop < nr_pages; loop++) - ClearPageFsCache(pvec.pages[loop]); - - first = pvec.pages[nr_pages - 1]->index + 1; - - pvec.nr = nr_pages; - pagevec_release(&pvec); - cond_resched(); - } -} - const struct fscache_cookie_def cifs_fscache_inode_object_def = { .name = "CIFS.uniqueid", .type = FSCACHE_COOKIE_TYPE_DATAFILE, @@ -329,5 +299,4 @@ const struct fscache_cookie_def cifs_fscache_inode_object_def = { .get_attr = cifs_fscache_inode_get_attr, .get_aux = cifs_fscache_inode_get_aux, .check_aux = cifs_fscache_inode_check_aux, - .now_uncached = cifs_fscache_inode_now_uncached, }; diff --git a/fs/cifs/cifsglob.h b/fs/cifs/cifsglob.h index 221693fe49ec..808486c29f0d 100644 --- a/fs/cifs/cifsglob.h +++ b/fs/cifs/cifsglob.h @@ -421,7 +421,7 @@ struct smb_version_operations { size_t, struct cifs_sb_info *); int (*set_EA)(const unsigned int, struct cifs_tcon *, const char *, const char *, const void *, const __u16, - const struct nls_table *, int); + const struct nls_table *, struct cifs_sb_info *); struct cifs_ntsd * (*get_acl)(struct cifs_sb_info *, struct inode *, const char *, u32 *); struct cifs_ntsd * (*get_acl_by_fid)(struct cifs_sb_info *, diff --git a/fs/cifs/cifsproto.h b/fs/cifs/cifsproto.h index 6eb3147132e3..4143c9dec463 100644 --- a/fs/cifs/cifsproto.h +++ b/fs/cifs/cifsproto.h @@ -484,7 +484,8 @@ extern ssize_t CIFSSMBQAllEAs(const unsigned int xid, struct cifs_tcon *tcon, extern int CIFSSMBSetEA(const unsigned int xid, struct cifs_tcon *tcon, const char *fileName, const char *ea_name, const void *ea_value, const __u16 ea_value_len, - const struct nls_table *nls_codepage, int remap_special_chars); + const struct nls_table *nls_codepage, + struct cifs_sb_info *cifs_sb); extern int CIFSSMBGetCIFSACL(const unsigned int xid, struct cifs_tcon *tcon, __u16 fid, struct cifs_ntsd **acl_inf, __u32 *buflen); extern int CIFSSMBSetCIFSACL(const unsigned int, struct cifs_tcon *, __u16, diff --git a/fs/cifs/cifssmb.c b/fs/cifs/cifssmb.c index 72a53bd19865..35dc5bf01ee2 100644 --- a/fs/cifs/cifssmb.c +++ b/fs/cifs/cifssmb.c @@ -178,6 +178,18 @@ cifs_reconnect_tcon(struct cifs_tcon *tcon, int smb_command) * reconnect the same SMB session */ mutex_lock(&ses->session_mutex); + + /* + * Recheck after acquire mutex. If another thread is negotiating + * and the server never sends an answer the socket will be closed + * and tcpStatus set to reconnect. + */ + if (server->tcpStatus == CifsNeedReconnect) { + rc = -EHOSTDOWN; + mutex_unlock(&ses->session_mutex); + goto out; + } + rc = cifs_negotiate_protocol(0, ses); if (rc == 0 && ses->need_reconnect) rc = cifs_setup_session(0, ses, nls_codepage); @@ -2522,7 +2534,7 @@ CIFSSMBPosixLock(const unsigned int xid, struct cifs_tcon *tcon, pLockData->fl_start = le64_to_cpu(parm_data->start); pLockData->fl_end = pLockData->fl_start + le64_to_cpu(parm_data->length) - 1; - pLockData->fl_pid = le32_to_cpu(parm_data->pid); + pLockData->fl_pid = -le32_to_cpu(parm_data->pid); } } @@ -6264,7 +6276,7 @@ int CIFSSMBSetEA(const unsigned int xid, struct cifs_tcon *tcon, const char *fileName, const char *ea_name, const void *ea_value, const __u16 ea_value_len, const struct nls_table *nls_codepage, - int remap) + struct cifs_sb_info *cifs_sb) { struct smb_com_transaction2_spi_req *pSMB = NULL; struct smb_com_transaction2_spi_rsp *pSMBr = NULL; @@ -6273,6 +6285,7 @@ CIFSSMBSetEA(const unsigned int xid, struct cifs_tcon *tcon, int rc = 0; int bytes_returned = 0; __u16 params, param_offset, byte_count, offset, count; + int remap = cifs_remap(cifs_sb); cifs_dbg(FYI, "In SetEA\n"); SetEARetry: diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c index 59647eb72c5f..5aa2d278ca84 100644 --- a/fs/cifs/connect.c +++ b/fs/cifs/connect.c @@ -509,7 +509,8 @@ server_unresponsive(struct TCP_Server_Info *server) * 65s kernel_recvmsg times out, and we see that we haven't gotten * a response in >60s. */ - if (server->tcpStatus == CifsGood && + if ((server->tcpStatus == CifsGood || + server->tcpStatus == CifsNeedNegotiate) && time_after(jiffies, server->lstrp + 2 * server->echo_interval)) { cifs_dbg(VFS, "Server %s has not responded in %lu seconds. Reconnecting...\n", server->hostname, (2 * server->echo_interval) / HZ); @@ -1223,6 +1224,7 @@ cifs_parse_mount_options(const char *mountdata, const char *devname, char *tmp_end, *value; char delim; bool got_ip = false; + bool got_version = false; unsigned short port = 0; struct sockaddr *dstaddr = (struct sockaddr *)&vol->dstaddr; @@ -1874,24 +1876,35 @@ cifs_parse_mount_options(const char *mountdata, const char *devname, pr_warn("CIFS: server netbiosname longer than 15 truncated.\n"); break; case Opt_ver: + /* version of mount userspace tools, not dialect */ string = match_strdup(args); if (string == NULL) goto out_nomem; + /* If interface changes in mount.cifs bump to new ver */ if (strncasecmp(string, "1", 1) == 0) { + if (strlen(string) > 1) { + pr_warn("Bad mount helper ver=%s. Did " + "you want SMB1 (CIFS) dialect " + "and mean to type vers=1.0 " + "instead?\n", string); + goto cifs_parse_mount_err; + } /* This is the default */ break; } /* For all other value, error */ - pr_warn("CIFS: Invalid version specified\n"); + pr_warn("CIFS: Invalid mount helper version specified\n"); goto cifs_parse_mount_err; case Opt_vers: + /* protocol version (dialect) */ string = match_strdup(args); if (string == NULL) goto out_nomem; if (cifs_parse_smb_version(string, vol) != 0) goto cifs_parse_mount_err; + got_version = true; break; case Opt_sec: string = match_strdup(args); @@ -1973,6 +1986,14 @@ cifs_parse_mount_options(const char *mountdata, const char *devname, else if (override_gid == 1) pr_notice("CIFS: ignoring forcegid mount option specified with no gid= option.\n"); + if (got_version == false) + pr_warn("No dialect specified on mount. Default has changed to " + "a more secure dialect, SMB3 (vers=3.0), from CIFS " + "(SMB1). To use the less secure SMB1 dialect to access " + "old servers which do not support SMB3 specify vers=1.0" + " on mount. For somewhat newer servers such as Windows " + "7 try vers=2.1.\n"); + kfree(mountdata_copy); return 0; diff --git a/fs/cifs/dir.c b/fs/cifs/dir.c index 56366e984076..e702d48bd023 100644 --- a/fs/cifs/dir.c +++ b/fs/cifs/dir.c @@ -194,15 +194,20 @@ cifs_bp_rename_retry: } /* + * Don't allow path components longer than the server max. * Don't allow the separator character in a path component. * The VFS will not allow "/", but "\" is allowed by posix. */ static int -check_name(struct dentry *direntry) +check_name(struct dentry *direntry, struct cifs_tcon *tcon) { struct cifs_sb_info *cifs_sb = CIFS_SB(direntry->d_sb); int i; + if (unlikely(direntry->d_name.len > + le32_to_cpu(tcon->fsAttrInfo.MaxPathNameComponentLength))) + return -ENAMETOOLONG; + if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_POSIX_PATHS)) { for (i = 0; i < direntry->d_name.len; i++) { if (direntry->d_name.name[i] == '\\') { @@ -500,10 +505,6 @@ cifs_atomic_open(struct inode *inode, struct dentry *direntry, return finish_no_open(file, res); } - rc = check_name(direntry); - if (rc) - return rc; - xid = get_xid(); cifs_dbg(FYI, "parent inode = 0x%p name is: %pd and dentry = 0x%p\n", @@ -516,6 +517,11 @@ cifs_atomic_open(struct inode *inode, struct dentry *direntry, } tcon = tlink_tcon(tlink); + + rc = check_name(direntry, tcon); + if (rc) + goto out_free_xid; + server = tcon->ses->server; if (server->ops->new_lease_key) @@ -776,7 +782,7 @@ cifs_lookup(struct inode *parent_dir_inode, struct dentry *direntry, } pTcon = tlink_tcon(tlink); - rc = check_name(direntry); + rc = check_name(direntry, pTcon); if (rc) goto lookup_out; diff --git a/fs/cifs/file.c b/fs/cifs/file.c index bc09df6b473a..0786f19d288f 100644 --- a/fs/cifs/file.c +++ b/fs/cifs/file.c @@ -2329,7 +2329,7 @@ int cifs_strict_fsync(struct file *file, loff_t start, loff_t end, struct inode *inode = file_inode(file); struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb); - rc = filemap_write_and_wait_range(inode->i_mapping, start, end); + rc = file_write_and_wait_range(file, start, end); if (rc) return rc; inode_lock(inode); @@ -2371,7 +2371,7 @@ int cifs_fsync(struct file *file, loff_t start, loff_t end, int datasync) struct cifs_sb_info *cifs_sb = CIFS_FILE_SB(file); struct inode *inode = file->f_mapping->host; - rc = filemap_write_and_wait_range(inode->i_mapping, start, end); + rc = file_write_and_wait_range(file, start, end); if (rc) return rc; inode_lock(inode); diff --git a/fs/cifs/smb2ops.c b/fs/cifs/smb2ops.c index cfacf2c97e94..fb2934b9b97c 100644 --- a/fs/cifs/smb2ops.c +++ b/fs/cifs/smb2ops.c @@ -426,6 +426,194 @@ smb2_query_file_info(const unsigned int xid, struct cifs_tcon *tcon, return rc; } +static ssize_t +move_smb2_ea_to_cifs(char *dst, size_t dst_size, + struct smb2_file_full_ea_info *src, size_t src_size, + const unsigned char *ea_name) +{ + int rc = 0; + unsigned int ea_name_len = ea_name ? strlen(ea_name) : 0; + char *name, *value; + size_t name_len, value_len, user_name_len; + + while (src_size > 0) { + name = &src->ea_data[0]; + name_len = (size_t)src->ea_name_length; + value = &src->ea_data[src->ea_name_length + 1]; + value_len = (size_t)le16_to_cpu(src->ea_value_length); + + if (name_len == 0) { + break; + } + + if (src_size < 8 + name_len + 1 + value_len) { + cifs_dbg(FYI, "EA entry goes beyond length of list\n"); + rc = -EIO; + goto out; + } + + if (ea_name) { + if (ea_name_len == name_len && + memcmp(ea_name, name, name_len) == 0) { + rc = value_len; + if (dst_size == 0) + goto out; + if (dst_size < value_len) { + rc = -ERANGE; + goto out; + } + memcpy(dst, value, value_len); + goto out; + } + } else { + /* 'user.' plus a terminating null */ + user_name_len = 5 + 1 + name_len; + + rc += user_name_len; + + if (dst_size >= user_name_len) { + dst_size -= user_name_len; + memcpy(dst, "user.", 5); + dst += 5; + memcpy(dst, src->ea_data, name_len); + dst += name_len; + *dst = 0; + ++dst; + } else if (dst_size == 0) { + /* skip copy - calc size only */ + } else { + /* stop before overrun buffer */ + rc = -ERANGE; + break; + } + } + + if (!src->next_entry_offset) + break; + + if (src_size < le32_to_cpu(src->next_entry_offset)) { + /* stop before overrun buffer */ + rc = -ERANGE; + break; + } + src_size -= le32_to_cpu(src->next_entry_offset); + src = (void *)((char *)src + + le32_to_cpu(src->next_entry_offset)); + } + + /* didn't find the named attribute */ + if (ea_name) + rc = -ENODATA; + +out: + return (ssize_t)rc; +} + +static ssize_t +smb2_query_eas(const unsigned int xid, struct cifs_tcon *tcon, + const unsigned char *path, const unsigned char *ea_name, + char *ea_data, size_t buf_size, + struct cifs_sb_info *cifs_sb) +{ + int rc; + __le16 *utf16_path; + __u8 oplock = SMB2_OPLOCK_LEVEL_NONE; + struct cifs_open_parms oparms; + struct cifs_fid fid; + struct smb2_file_full_ea_info *smb2_data; + + utf16_path = cifs_convert_path_to_utf16(path, cifs_sb); + if (!utf16_path) + return -ENOMEM; + + oparms.tcon = tcon; + oparms.desired_access = FILE_READ_EA; + oparms.disposition = FILE_OPEN; + oparms.create_options = 0; + oparms.fid = &fid; + oparms.reconnect = false; + + rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL); + kfree(utf16_path); + if (rc) { + cifs_dbg(FYI, "open failed rc=%d\n", rc); + return rc; + } + + smb2_data = kzalloc(SMB2_MAX_EA_BUF, GFP_KERNEL); + if (smb2_data == NULL) { + SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid); + return -ENOMEM; + } + + rc = SMB2_query_eas(xid, tcon, fid.persistent_fid, fid.volatile_fid, + smb2_data); + SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid); + + if (!rc) + rc = move_smb2_ea_to_cifs(ea_data, buf_size, smb2_data, + SMB2_MAX_EA_BUF, ea_name); + + kfree(smb2_data); + return rc; +} + + +static int +smb2_set_ea(const unsigned int xid, struct cifs_tcon *tcon, + const char *path, const char *ea_name, const void *ea_value, + const __u16 ea_value_len, const struct nls_table *nls_codepage, + struct cifs_sb_info *cifs_sb) +{ + int rc; + __le16 *utf16_path; + __u8 oplock = SMB2_OPLOCK_LEVEL_NONE; + struct cifs_open_parms oparms; + struct cifs_fid fid; + struct smb2_file_full_ea_info *ea; + int ea_name_len = strlen(ea_name); + int len; + + if (ea_name_len > 255) + return -EINVAL; + + utf16_path = cifs_convert_path_to_utf16(path, cifs_sb); + if (!utf16_path) + return -ENOMEM; + + oparms.tcon = tcon; + oparms.desired_access = FILE_WRITE_EA; + oparms.disposition = FILE_OPEN; + oparms.create_options = 0; + oparms.fid = &fid; + oparms.reconnect = false; + + rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL); + kfree(utf16_path); + if (rc) { + cifs_dbg(FYI, "open failed rc=%d\n", rc); + return rc; + } + + len = sizeof(ea) + ea_name_len + ea_value_len + 1; + ea = kzalloc(len, GFP_KERNEL); + if (ea == NULL) { + SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid); + return -ENOMEM; + } + + ea->ea_name_length = ea_name_len; + ea->ea_value_length = cpu_to_le16(ea_value_len); + memcpy(ea->ea_data, ea_name, ea_name_len + 1); + memcpy(ea->ea_data + ea_name_len + 1, ea_value, ea_value_len); + + rc = SMB2_set_ea(xid, tcon, fid.persistent_fid, fid.volatile_fid, ea, + len); + SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid); + + return rc; +} + static bool smb2_can_echo(struct TCP_Server_Info *server) { @@ -2572,6 +2760,10 @@ struct smb_version_operations smb20_operations = { .dir_needs_close = smb2_dir_needs_close, .get_dfs_refer = smb2_get_dfs_refer, .select_sectype = smb2_select_sectype, +#ifdef CONFIG_CIFS_XATTR + .query_all_EAs = smb2_query_eas, + .set_EA = smb2_set_ea, +#endif /* CIFS_XATTR */ #ifdef CONFIG_CIFS_ACL .get_acl = get_smb2_acl, .get_acl_by_fid = get_smb2_acl_by_fid, @@ -2662,6 +2854,10 @@ struct smb_version_operations smb21_operations = { .enum_snapshots = smb3_enum_snapshots, .get_dfs_refer = smb2_get_dfs_refer, .select_sectype = smb2_select_sectype, +#ifdef CONFIG_CIFS_XATTR + .query_all_EAs = smb2_query_eas, + .set_EA = smb2_set_ea, +#endif /* CIFS_XATTR */ #ifdef CONFIG_CIFS_ACL .get_acl = get_smb2_acl, .get_acl_by_fid = get_smb2_acl_by_fid, @@ -2762,6 +2958,10 @@ struct smb_version_operations smb30_operations = { .receive_transform = smb3_receive_transform, .get_dfs_refer = smb2_get_dfs_refer, .select_sectype = smb2_select_sectype, +#ifdef CONFIG_CIFS_XATTR + .query_all_EAs = smb2_query_eas, + .set_EA = smb2_set_ea, +#endif /* CIFS_XATTR */ #ifdef CONFIG_CIFS_ACL .get_acl = get_smb2_acl, .get_acl_by_fid = get_smb2_acl_by_fid, @@ -2863,6 +3063,10 @@ struct smb_version_operations smb311_operations = { .receive_transform = smb3_receive_transform, .get_dfs_refer = smb2_get_dfs_refer, .select_sectype = smb2_select_sectype, +#ifdef CONFIG_CIFS_XATTR + .query_all_EAs = smb2_query_eas, + .set_EA = smb2_set_ea, +#endif /* CIFS_XATTR */ }; #endif /* CIFS_SMB311 */ diff --git a/fs/cifs/smb2pdu.c b/fs/cifs/smb2pdu.c index 5fb2fc2d0080..5531e7ee1210 100644 --- a/fs/cifs/smb2pdu.c +++ b/fs/cifs/smb2pdu.c @@ -238,6 +238,18 @@ smb2_reconnect(__le16 smb2_command, struct cifs_tcon *tcon) * the same SMB session */ mutex_lock(&tcon->ses->session_mutex); + + /* + * Recheck after acquire mutex. If another thread is negotiating + * and the server never sends an answer the socket will be closed + * and tcpStatus set to reconnect. + */ + if (server->tcpStatus == CifsNeedReconnect) { + rc = -EHOSTDOWN; + mutex_unlock(&tcon->ses->session_mutex); + goto out; + } + rc = cifs_negotiate_protocol(0, tcon->ses); if (!rc && tcon->ses->need_reconnect) rc = cifs_setup_session(0, tcon->ses, nls_codepage); @@ -514,7 +526,12 @@ SMB2_negotiate(const unsigned int xid, struct cifs_ses *ses) * No tcon so can't do * cifs_stats_inc(&tcon->stats.smb2_stats.smb2_com_fail[SMB2...]); */ - if (rc != 0) + if (rc == -EOPNOTSUPP) { + cifs_dbg(VFS, "Dialect not supported by server. Consider " + "specifying vers=1.0 or vers=2.1 on mount for accessing" + " older servers\n"); + goto neg_exit; + } else if (rc != 0) goto neg_exit; cifs_dbg(FYI, "mode 0x%x\n", rsp->SecurityMode); @@ -2140,6 +2157,18 @@ qinf_exit: return rc; } +int SMB2_query_eas(const unsigned int xid, struct cifs_tcon *tcon, + u64 persistent_fid, u64 volatile_fid, + struct smb2_file_full_ea_info *data) +{ + return query_info(xid, tcon, persistent_fid, volatile_fid, + FILE_FULL_EA_INFORMATION, SMB2_O_INFO_FILE, 0, + SMB2_MAX_EA_BUF, + sizeof(struct smb2_file_full_ea_info), + (void **)&data, + NULL); +} + int SMB2_query_info(const unsigned int xid, struct cifs_tcon *tcon, u64 persistent_fid, u64 volatile_fid, struct smb2_file_all_info *data) { @@ -3180,6 +3209,16 @@ SMB2_set_acl(const unsigned int xid, struct cifs_tcon *tcon, } int +SMB2_set_ea(const unsigned int xid, struct cifs_tcon *tcon, + u64 persistent_fid, u64 volatile_fid, + struct smb2_file_full_ea_info *buf, int len) +{ + return send_set_info(xid, tcon, persistent_fid, volatile_fid, + current->tgid, FILE_FULL_EA_INFORMATION, SMB2_O_INFO_FILE, + 0, 1, (void **)&buf, &len); +} + +int SMB2_oplock_break(const unsigned int xid, struct cifs_tcon *tcon, const u64 persistent_fid, const u64 volatile_fid, __u8 oplock_level) @@ -3219,8 +3258,8 @@ copy_fs_info_to_kstatfs(struct smb2_fs_full_size_info *pfs_inf, kst->f_bsize = le32_to_cpu(pfs_inf->BytesPerSector) * le32_to_cpu(pfs_inf->SectorsPerAllocationUnit); kst->f_blocks = le64_to_cpu(pfs_inf->TotalAllocationUnits); - kst->f_bfree = le64_to_cpu(pfs_inf->ActualAvailableAllocationUnits); - kst->f_bavail = le64_to_cpu(pfs_inf->CallerAvailableAllocationUnits); + kst->f_bfree = kst->f_bavail = + le64_to_cpu(pfs_inf->CallerAvailableAllocationUnits); return; } diff --git a/fs/cifs/smb2pdu.h b/fs/cifs/smb2pdu.h index 18700fd25a0b..393ed5f4e1b6 100644 --- a/fs/cifs/smb2pdu.h +++ b/fs/cifs/smb2pdu.h @@ -84,8 +84,8 @@ #define NUMBER_OF_SMB2_COMMANDS 0x0013 -/* BB FIXME - analyze following length BB */ -#define MAX_SMB2_HDR_SIZE 0x78 /* 4 len + 64 hdr + (2*24 wct) + 2 bct + 2 pad */ +/* 4 len + 52 transform hdr + 64 hdr + 56 create rsp */ +#define MAX_SMB2_HDR_SIZE 0x00b0 #define SMB2_PROTO_NUMBER cpu_to_le32(0x424d53fe) #define SMB2_TRANSFORM_PROTO_NUM cpu_to_le32(0x424d53fd) @@ -1178,6 +1178,16 @@ struct smb2_file_link_info { /* encoding of request for level 11 */ char FileName[0]; /* Name to be assigned to new link */ } __packed; /* level 11 Set */ +#define SMB2_MAX_EA_BUF 2048 + +struct smb2_file_full_ea_info { /* encoding of response for level 15 */ + __le32 next_entry_offset; + __u8 flags; + __u8 ea_name_length; + __le16 ea_value_length; + char ea_data[0]; /* \0 terminated name plus value */ +} __packed; /* level 15 Set */ + /* * This level 18, although with struct with same name is different from cifs * level 0x107. Level 0x107 has an extra u64 between AccessFlags and diff --git a/fs/cifs/smb2proto.h b/fs/cifs/smb2proto.h index 1cadaf9f3c58..003217099ef3 100644 --- a/fs/cifs/smb2proto.h +++ b/fs/cifs/smb2proto.h @@ -132,6 +132,9 @@ extern int SMB2_close(const unsigned int xid, struct cifs_tcon *tcon, u64 persistent_file_id, u64 volatile_file_id); extern int SMB2_flush(const unsigned int xid, struct cifs_tcon *tcon, u64 persistent_file_id, u64 volatile_file_id); +extern int SMB2_query_eas(const unsigned int xid, struct cifs_tcon *tcon, + u64 persistent_file_id, u64 volatile_file_id, + struct smb2_file_full_ea_info *data); extern int SMB2_query_info(const unsigned int xid, struct cifs_tcon *tcon, u64 persistent_file_id, u64 volatile_file_id, struct smb2_file_all_info *data); @@ -169,6 +172,9 @@ extern int SMB2_set_info(const unsigned int xid, struct cifs_tcon *tcon, extern int SMB2_set_acl(const unsigned int xid, struct cifs_tcon *tcon, u64 persistent_fid, u64 volatile_fid, struct cifs_ntsd *pnntsd, int pacllen, int aclflag); +extern int SMB2_set_ea(const unsigned int xid, struct cifs_tcon *tcon, + u64 persistent_fid, u64 volatile_fid, + struct smb2_file_full_ea_info *buf, int len); extern int SMB2_set_compression(const unsigned int xid, struct cifs_tcon *tcon, u64 persistent_fid, u64 volatile_fid); extern int SMB2_oplock_break(const unsigned int xid, struct cifs_tcon *tcon, diff --git a/fs/cifs/xattr.c b/fs/cifs/xattr.c index de50e749ff05..52f975d848a0 100644 --- a/fs/cifs/xattr.c +++ b/fs/cifs/xattr.c @@ -84,7 +84,7 @@ static int cifs_xattr_set(const struct xattr_handler *handler, if (pTcon->ses->server->ops->set_EA) rc = pTcon->ses->server->ops->set_EA(xid, pTcon, full_path, name, value, (__u16)size, - cifs_sb->local_nls, cifs_remap(cifs_sb)); + cifs_sb->local_nls, cifs_sb); break; case XATTR_CIFS_ACL: { diff --git a/fs/compat_ioctl.c b/fs/compat_ioctl.c index 2dd4a7af7dd7..d27b326d96f4 100644 --- a/fs/compat_ioctl.c +++ b/fs/compat_ioctl.c @@ -1331,8 +1331,6 @@ COMPATIBLE_IOCTL(DMX_SET_FILTER) COMPATIBLE_IOCTL(DMX_SET_PES_FILTER) COMPATIBLE_IOCTL(DMX_SET_BUFFER_SIZE) COMPATIBLE_IOCTL(DMX_GET_PES_PIDS) -COMPATIBLE_IOCTL(DMX_GET_CAPS) -COMPATIBLE_IOCTL(DMX_SET_SOURCE) COMPATIBLE_IOCTL(DMX_GET_STC) COMPATIBLE_IOCTL(FE_GET_INFO) COMPATIBLE_IOCTL(FE_DISEQC_RESET_OVERLOAD) diff --git a/fs/crypto/bio.c b/fs/crypto/bio.c index 6181e9526860..483784d5eb73 100644 --- a/fs/crypto/bio.c +++ b/fs/crypto/bio.c @@ -115,7 +115,7 @@ int fscrypt_zeroout_range(const struct inode *inode, pgoff_t lblk, err = -ENOMEM; goto errout; } - bio->bi_bdev = inode->i_sb->s_bdev; + bio_set_dev(bio, 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); @@ -42,6 +42,9 @@ #define DAX_WAIT_TABLE_BITS 12 #define DAX_WAIT_TABLE_ENTRIES (1 << DAX_WAIT_TABLE_BITS) +/* The 'colour' (ie low bits) within a PMD of a page offset. */ +#define PG_PMD_COLOUR ((PMD_SIZE >> PAGE_SHIFT) - 1) + static wait_queue_head_t wait_table[DAX_WAIT_TABLE_ENTRIES]; static int __init init_dax_wait_table(void) @@ -54,6 +57,40 @@ static int __init init_dax_wait_table(void) } fs_initcall(init_dax_wait_table); +/* + * We use lowest available bit in exceptional entry for locking, one bit for + * the entry size (PMD) and two more to tell us if the entry is a zero page or + * an empty entry that is just used for locking. In total four special bits. + * + * If the PMD bit isn't set the entry has size PAGE_SIZE, and if the ZERO_PAGE + * and EMPTY bits aren't set the entry is a normal DAX entry with a filesystem + * block allocation. + */ +#define RADIX_DAX_SHIFT (RADIX_TREE_EXCEPTIONAL_SHIFT + 4) +#define RADIX_DAX_ENTRY_LOCK (1 << RADIX_TREE_EXCEPTIONAL_SHIFT) +#define RADIX_DAX_PMD (1 << (RADIX_TREE_EXCEPTIONAL_SHIFT + 1)) +#define RADIX_DAX_ZERO_PAGE (1 << (RADIX_TREE_EXCEPTIONAL_SHIFT + 2)) +#define RADIX_DAX_EMPTY (1 << (RADIX_TREE_EXCEPTIONAL_SHIFT + 3)) + +static unsigned long dax_radix_sector(void *entry) +{ + return (unsigned long)entry >> RADIX_DAX_SHIFT; +} + +static void *dax_radix_locked_entry(sector_t sector, unsigned long flags) +{ + return (void *)(RADIX_TREE_EXCEPTIONAL_ENTRY | flags | + ((unsigned long)sector << RADIX_DAX_SHIFT) | + RADIX_DAX_ENTRY_LOCK); +} + +static unsigned int dax_radix_order(void *entry) +{ + if ((unsigned long)entry & RADIX_DAX_PMD) + return PMD_SHIFT - PAGE_SHIFT; + return 0; +} + static int dax_is_pmd_entry(void *entry) { return (unsigned long)entry & RADIX_DAX_PMD; @@ -66,7 +103,7 @@ static int dax_is_pte_entry(void *entry) static int dax_is_zero_entry(void *entry) { - return (unsigned long)entry & RADIX_DAX_HZP; + return (unsigned long)entry & RADIX_DAX_ZERO_PAGE; } static int dax_is_empty_entry(void *entry) @@ -98,7 +135,7 @@ static wait_queue_head_t *dax_entry_waitqueue(struct address_space *mapping, * the range covered by the PMD map to the same bit lock. */ if (dax_is_pmd_entry(entry)) - index &= ~((1UL << (PMD_SHIFT - PAGE_SHIFT)) - 1); + index &= ~PG_PMD_COLOUR; key->mapping = mapping; key->entry_start = index; @@ -121,6 +158,31 @@ static int wake_exceptional_entry_func(wait_queue_entry_t *wait, unsigned int mo } /* + * We do not necessarily hold the mapping->tree_lock when we call this + * function so it is possible that 'entry' is no longer a valid item in the + * radix tree. This is okay because all we really need to do is to find the + * correct waitqueue where tasks might be waiting for that old 'entry' and + * wake them. + */ +static void dax_wake_mapping_entry_waiter(struct address_space *mapping, + pgoff_t index, void *entry, bool wake_all) +{ + struct exceptional_entry_key key; + wait_queue_head_t *wq; + + wq = dax_entry_waitqueue(mapping, index, entry, &key); + + /* + * Checking for locked entry and prepare_to_wait_exclusive() happens + * under mapping->tree_lock, ditto for entry handling in our callers. + * So at this point all tasks that could have seen our entry locked + * must be in the waitqueue and the following check will see them. + */ + if (waitqueue_active(wq)) + __wake_up(wq, TASK_NORMAL, wake_all ? 0 : 1, &key); +} + +/* * Check whether the given slot is locked. The function must be called with * mapping->tree_lock held */ @@ -181,7 +243,8 @@ static void *get_unlocked_mapping_entry(struct address_space *mapping, for (;;) { entry = __radix_tree_lookup(&mapping->page_tree, index, NULL, &slot); - if (!entry || !radix_tree_exceptional_entry(entry) || + if (!entry || + WARN_ON_ONCE(!radix_tree_exceptional_entry(entry)) || !slot_locked(mapping, slot)) { if (slotp) *slotp = slot; @@ -216,14 +279,9 @@ static void dax_unlock_mapping_entry(struct address_space *mapping, } static void put_locked_mapping_entry(struct address_space *mapping, - pgoff_t index, void *entry) + pgoff_t index) { - if (!radix_tree_exceptional_entry(entry)) { - unlock_page(entry); - put_page(entry); - } else { - dax_unlock_mapping_entry(mapping, index); - } + dax_unlock_mapping_entry(mapping, index); } /* @@ -233,7 +291,7 @@ static void put_locked_mapping_entry(struct address_space *mapping, static void put_unlocked_mapping_entry(struct address_space *mapping, pgoff_t index, void *entry) { - if (!radix_tree_exceptional_entry(entry)) + if (!entry) return; /* We have to wake up next waiter for the radix tree entry lock */ @@ -241,15 +299,15 @@ static void put_unlocked_mapping_entry(struct address_space *mapping, } /* - * Find radix tree entry at given index. If it points to a page, return with - * the page locked. If it points to the exceptional entry, return with the - * radix tree entry locked. If the radix tree doesn't contain given index, - * create empty exceptional entry for the index and return with it locked. + * Find radix tree entry at given index. If it points to an exceptional entry, + * return it with the radix tree entry locked. If the radix tree doesn't + * contain given index, create an empty exceptional entry for the index and + * return with it locked. * * When requesting an entry with size RADIX_DAX_PMD, grab_mapping_entry() will * either return that locked entry or will return an error. This error will - * happen if there are any 4k entries (either zero pages or DAX entries) - * within the 2MiB range that we are requesting. + * happen if there are any 4k entries within the 2MiB range that we are + * requesting. * * We always favor 4k entries over 2MiB entries. There isn't a flow where we * evict 4k entries in order to 'upgrade' them to a 2MiB entry. A 2MiB @@ -276,18 +334,21 @@ restart: spin_lock_irq(&mapping->tree_lock); entry = get_unlocked_mapping_entry(mapping, index, &slot); + if (WARN_ON_ONCE(entry && !radix_tree_exceptional_entry(entry))) { + entry = ERR_PTR(-EIO); + goto out_unlock; + } + if (entry) { if (size_flag & RADIX_DAX_PMD) { - if (!radix_tree_exceptional_entry(entry) || - dax_is_pte_entry(entry)) { + if (dax_is_pte_entry(entry)) { put_unlocked_mapping_entry(mapping, index, entry); entry = ERR_PTR(-EEXIST); goto out_unlock; } } else { /* trying to grab a PTE entry */ - if (radix_tree_exceptional_entry(entry) && - dax_is_pmd_entry(entry) && + if (dax_is_pmd_entry(entry) && (dax_is_zero_entry(entry) || dax_is_empty_entry(entry))) { pmd_downgrade = true; @@ -321,7 +382,7 @@ restart: mapping_gfp_mask(mapping) & ~__GFP_HIGHMEM); if (err) { if (pmd_downgrade) - put_locked_mapping_entry(mapping, index, entry); + put_locked_mapping_entry(mapping, index); return ERR_PTR(err); } spin_lock_irq(&mapping->tree_lock); @@ -371,52 +432,12 @@ restart: spin_unlock_irq(&mapping->tree_lock); return entry; } - /* Normal page in radix tree? */ - if (!radix_tree_exceptional_entry(entry)) { - struct page *page = entry; - - get_page(page); - spin_unlock_irq(&mapping->tree_lock); - lock_page(page); - /* Page got truncated? Retry... */ - if (unlikely(page->mapping != mapping)) { - unlock_page(page); - put_page(page); - goto restart; - } - return page; - } entry = lock_slot(mapping, slot); out_unlock: spin_unlock_irq(&mapping->tree_lock); return entry; } -/* - * We do not necessarily hold the mapping->tree_lock when we call this - * function so it is possible that 'entry' is no longer a valid item in the - * radix tree. This is okay because all we really need to do is to find the - * correct waitqueue where tasks might be waiting for that old 'entry' and - * wake them. - */ -void dax_wake_mapping_entry_waiter(struct address_space *mapping, - pgoff_t index, void *entry, bool wake_all) -{ - struct exceptional_entry_key key; - wait_queue_head_t *wq; - - wq = dax_entry_waitqueue(mapping, index, entry, &key); - - /* - * Checking for locked entry and prepare_to_wait_exclusive() happens - * under mapping->tree_lock, ditto for entry handling in our callers. - * So at this point all tasks that could have seen our entry locked - * must be in the waitqueue and the following check will see them. - */ - if (waitqueue_active(wq)) - __wake_up(wq, TASK_NORMAL, wake_all ? 0 : 1, &key); -} - static int __dax_invalidate_mapping_entry(struct address_space *mapping, pgoff_t index, bool trunc) { @@ -426,7 +447,7 @@ static int __dax_invalidate_mapping_entry(struct address_space *mapping, spin_lock_irq(&mapping->tree_lock); entry = get_unlocked_mapping_entry(mapping, index, NULL); - if (!entry || !radix_tree_exceptional_entry(entry)) + if (!entry || WARN_ON_ONCE(!radix_tree_exceptional_entry(entry))) goto out; if (!trunc && (radix_tree_tag_get(page_tree, index, PAGECACHE_TAG_DIRTY) || @@ -468,50 +489,6 @@ int dax_invalidate_mapping_entry_sync(struct address_space *mapping, return __dax_invalidate_mapping_entry(mapping, index, false); } -/* - * The user has performed a load from a hole in the file. Allocating - * a new page in the file would cause excessive storage usage for - * workloads with sparse files. We allocate a page cache page instead. - * We'll kick it out of the page cache if it's ever written to, - * otherwise it will simply fall out of the page cache under memory - * pressure without ever having been dirtied. - */ -static int dax_load_hole(struct address_space *mapping, void **entry, - struct vm_fault *vmf) -{ - struct inode *inode = mapping->host; - struct page *page; - int ret; - - /* Hole page already exists? Return it... */ - if (!radix_tree_exceptional_entry(*entry)) { - page = *entry; - goto finish_fault; - } - - /* This will replace locked radix tree entry with a hole page */ - page = find_or_create_page(mapping, vmf->pgoff, - vmf->gfp_mask | __GFP_ZERO); - if (!page) { - ret = VM_FAULT_OOM; - goto out; - } - -finish_fault: - vmf->page = page; - ret = finish_fault(vmf); - vmf->page = NULL; - *entry = page; - if (!ret) { - /* Grab reference for PTE that is now referencing the page */ - get_page(page); - ret = VM_FAULT_NOPAGE; - } -out: - trace_dax_load_hole(inode, vmf, ret); - return ret; -} - static int copy_user_dax(struct block_device *bdev, struct dax_device *dax_dev, sector_t sector, size_t size, struct page *to, unsigned long vaddr) @@ -552,47 +529,27 @@ static void *dax_insert_mapping_entry(struct address_space *mapping, unsigned long flags) { struct radix_tree_root *page_tree = &mapping->page_tree; - int error = 0; - bool hole_fill = false; void *new_entry; pgoff_t index = vmf->pgoff; if (vmf->flags & FAULT_FLAG_WRITE) __mark_inode_dirty(mapping->host, I_DIRTY_PAGES); - /* Replacing hole page with block mapping? */ - if (!radix_tree_exceptional_entry(entry)) { - hole_fill = true; - /* - * Unmap the page now before we remove it from page cache below. - * The page is locked so it cannot be faulted in again. - */ - unmap_mapping_range(mapping, vmf->pgoff << PAGE_SHIFT, - PAGE_SIZE, 0); - error = radix_tree_preload(vmf->gfp_mask & ~__GFP_HIGHMEM); - if (error) - return ERR_PTR(error); - } else if (dax_is_zero_entry(entry) && !(flags & RADIX_DAX_HZP)) { - /* replacing huge zero page with PMD block mapping */ - unmap_mapping_range(mapping, - (vmf->pgoff << PAGE_SHIFT) & PMD_MASK, PMD_SIZE, 0); + if (dax_is_zero_entry(entry) && !(flags & RADIX_DAX_ZERO_PAGE)) { + /* we are replacing a zero page with block mapping */ + if (dax_is_pmd_entry(entry)) + unmap_mapping_range(mapping, + (vmf->pgoff << PAGE_SHIFT) & PMD_MASK, + PMD_SIZE, 0); + else /* pte entry */ + unmap_mapping_range(mapping, vmf->pgoff << PAGE_SHIFT, + PAGE_SIZE, 0); } spin_lock_irq(&mapping->tree_lock); new_entry = dax_radix_locked_entry(sector, flags); - if (hole_fill) { - __delete_from_page_cache(entry, NULL); - /* Drop pagecache reference */ - put_page(entry); - error = __radix_tree_insert(page_tree, index, - dax_radix_order(new_entry), new_entry); - if (error) { - new_entry = ERR_PTR(error); - goto unlock; - } - mapping->nrexceptional++; - } else if (dax_is_zero_entry(entry) || dax_is_empty_entry(entry)) { + if (dax_is_zero_entry(entry) || dax_is_empty_entry(entry)) { /* * Only swap our new entry into the radix tree if the current * entry is a zero page or an empty entry. If a normal PTE or @@ -609,23 +566,14 @@ static void *dax_insert_mapping_entry(struct address_space *mapping, WARN_ON_ONCE(ret != entry); __radix_tree_replace(page_tree, node, slot, new_entry, NULL, NULL); + entry = new_entry; } + if (vmf->flags & FAULT_FLAG_WRITE) radix_tree_tag_set(page_tree, index, PAGECACHE_TAG_DIRTY); - unlock: + spin_unlock_irq(&mapping->tree_lock); - if (hole_fill) { - radix_tree_preload_end(); - /* - * We don't need hole page anymore, it has been replaced with - * locked radix tree entry now. - */ - if (mapping->a_ops->freepage) - mapping->a_ops->freepage(entry); - unlock_page(entry); - put_page(entry); - } - return new_entry; + return entry; } static inline unsigned long @@ -646,11 +594,10 @@ static void dax_mapping_entry_mkclean(struct address_space *mapping, pte_t pte, *ptep = NULL; pmd_t *pmdp = NULL; spinlock_t *ptl; - bool changed; i_mmap_lock_read(mapping); vma_interval_tree_foreach(vma, &mapping->i_mmap, index, index) { - unsigned long address; + unsigned long address, start, end; cond_resched(); @@ -658,8 +605,13 @@ static void dax_mapping_entry_mkclean(struct address_space *mapping, continue; address = pgoff_address(index, vma); - changed = false; - if (follow_pte_pmd(vma->vm_mm, address, &ptep, &pmdp, &ptl)) + + /* + * Note because we provide start/end to follow_pte_pmd it will + * call mmu_notifier_invalidate_range_start() on our behalf + * before taking any lock. + */ + if (follow_pte_pmd(vma->vm_mm, address, &start, &end, &ptep, &pmdp, &ptl)) continue; if (pmdp) { @@ -676,7 +628,7 @@ static void dax_mapping_entry_mkclean(struct address_space *mapping, pmd = pmd_wrprotect(pmd); pmd = pmd_mkclean(pmd); set_pmd_at(vma->vm_mm, address, pmdp, pmd); - changed = true; + mmu_notifier_invalidate_range(vma->vm_mm, start, end); unlock_pmd: spin_unlock(ptl); #endif @@ -691,13 +643,12 @@ unlock_pmd: pte = pte_wrprotect(pte); pte = pte_mkclean(pte); set_pte_at(vma->vm_mm, address, ptep, pte); - changed = true; + mmu_notifier_invalidate_range(vma->vm_mm, start, end); unlock_pte: pte_unmap_unlock(ptep, ptl); } - if (changed) - mmu_notifier_invalidate_page(vma->vm_mm, address); + mmu_notifier_invalidate_range_end(vma->vm_mm, start, end); } i_mmap_unlock_read(mapping); } @@ -724,7 +675,7 @@ static int dax_writeback_one(struct block_device *bdev, spin_lock_irq(&mapping->tree_lock); entry2 = get_unlocked_mapping_entry(mapping, index, &slot); /* Entry got punched out / reallocated? */ - if (!entry2 || !radix_tree_exceptional_entry(entry2)) + if (!entry2 || WARN_ON_ONCE(!radix_tree_exceptional_entry(entry2))) goto put_unlocked; /* * Entry got reallocated elsewhere? No need to writeback. We have to @@ -796,7 +747,7 @@ static int dax_writeback_one(struct block_device *bdev, trace_dax_writeback_one(mapping->host, index, size >> PAGE_SHIFT); dax_unlock: dax_read_unlock(id); - put_locked_mapping_entry(mapping, index, entry); + put_locked_mapping_entry(mapping, index); return ret; put_unlocked: @@ -871,11 +822,10 @@ EXPORT_SYMBOL_GPL(dax_writeback_mapping_range); static int dax_insert_mapping(struct address_space *mapping, struct block_device *bdev, struct dax_device *dax_dev, - sector_t sector, size_t size, void **entryp, + sector_t sector, size_t size, void *entry, struct vm_area_struct *vma, struct vm_fault *vmf) { unsigned long vaddr = vmf->address; - void *entry = *entryp; void *ret, *kaddr; pgoff_t pgoff; int id, rc; @@ -896,47 +846,48 @@ static int dax_insert_mapping(struct address_space *mapping, ret = dax_insert_mapping_entry(mapping, vmf, entry, sector, 0); if (IS_ERR(ret)) return PTR_ERR(ret); - *entryp = ret; trace_dax_insert_mapping(mapping->host, vmf, ret); - return vm_insert_mixed(vma, vaddr, pfn); + if (vmf->flags & FAULT_FLAG_WRITE) + return vm_insert_mixed_mkwrite(vma, vaddr, pfn); + else + return vm_insert_mixed(vma, vaddr, pfn); } -/** - * dax_pfn_mkwrite - handle first write to DAX page - * @vmf: The description of the fault +/* + * The user has performed a load from a hole in the file. Allocating a new + * page in the file would cause excessive storage usage for workloads with + * sparse files. Instead we insert a read-only mapping of the 4k zero page. + * If this page is ever written to we will re-fault and change the mapping to + * point to real DAX storage instead. */ -int dax_pfn_mkwrite(struct vm_fault *vmf) +static int dax_load_hole(struct address_space *mapping, void *entry, + struct vm_fault *vmf) { - struct file *file = vmf->vma->vm_file; - struct address_space *mapping = file->f_mapping; struct inode *inode = mapping->host; - void *entry, **slot; - pgoff_t index = vmf->pgoff; + unsigned long vaddr = vmf->address; + int ret = VM_FAULT_NOPAGE; + struct page *zero_page; + void *entry2; - spin_lock_irq(&mapping->tree_lock); - entry = get_unlocked_mapping_entry(mapping, index, &slot); - if (!entry || !radix_tree_exceptional_entry(entry)) { - if (entry) - put_unlocked_mapping_entry(mapping, index, entry); - spin_unlock_irq(&mapping->tree_lock); - trace_dax_pfn_mkwrite_no_entry(inode, vmf, VM_FAULT_NOPAGE); - return VM_FAULT_NOPAGE; + zero_page = ZERO_PAGE(0); + if (unlikely(!zero_page)) { + ret = VM_FAULT_OOM; + goto out; } - radix_tree_tag_set(&mapping->page_tree, index, PAGECACHE_TAG_DIRTY); - entry = lock_slot(mapping, slot); - spin_unlock_irq(&mapping->tree_lock); - /* - * If we race with somebody updating the PTE and finish_mkwrite_fault() - * fails, we don't care. We need to return VM_FAULT_NOPAGE and retry - * the fault in either case. - */ - finish_mkwrite_fault(vmf); - put_locked_mapping_entry(mapping, index, entry); - trace_dax_pfn_mkwrite(inode, vmf, VM_FAULT_NOPAGE); - return VM_FAULT_NOPAGE; + + entry2 = dax_insert_mapping_entry(mapping, vmf, entry, 0, + RADIX_DAX_ZERO_PAGE); + if (IS_ERR(entry2)) { + ret = VM_FAULT_SIGBUS; + goto out; + } + + vm_insert_mixed(vmf->vma, vaddr, page_to_pfn_t(zero_page)); +out: + trace_dax_load_hole(inode, vmf, ret); + return ret; } -EXPORT_SYMBOL_GPL(dax_pfn_mkwrite); static bool dax_range_is_aligned(struct block_device *bdev, unsigned int offset, unsigned int length) @@ -1056,6 +1007,11 @@ dax_iomap_actor(struct inode *inode, loff_t pos, loff_t length, void *data, if (map_len > end - pos) map_len = end - pos; + /* + * The userspace address for the memory copy has already been + * validated via access_ok() in either vfs_read() or + * vfs_write(), depending on which operation we are doing. + */ if (iov_iter_rw(iter) == WRITE) map_len = dax_copy_from_iter(dax_dev, pgoff, kaddr, map_len, iter); @@ -1220,7 +1176,7 @@ static int dax_iomap_pte_fault(struct vm_fault *vmf, major = VM_FAULT_MAJOR; } error = dax_insert_mapping(mapping, iomap.bdev, iomap.dax_dev, - sector, PAGE_SIZE, &entry, vmf->vma, vmf); + sector, PAGE_SIZE, entry, vmf->vma, vmf); /* -EBUSY is fine, somebody else faulted on the same PTE */ if (error == -EBUSY) error = 0; @@ -1228,7 +1184,7 @@ static int dax_iomap_pte_fault(struct vm_fault *vmf, case IOMAP_UNWRITTEN: case IOMAP_HOLE: if (!(vmf->flags & FAULT_FLAG_WRITE)) { - vmf_ret = dax_load_hole(mapping, &entry, vmf); + vmf_ret = dax_load_hole(mapping, entry, vmf); goto finish_iomap; } /*FALLTHRU*/ @@ -1255,21 +1211,15 @@ static int dax_iomap_pte_fault(struct vm_fault *vmf, ops->iomap_end(inode, pos, PAGE_SIZE, copied, flags, &iomap); } unlock_entry: - put_locked_mapping_entry(mapping, vmf->pgoff, entry); + put_locked_mapping_entry(mapping, vmf->pgoff); out: trace_dax_pte_fault_done(inode, vmf, vmf_ret); return vmf_ret; } #ifdef CONFIG_FS_DAX_PMD -/* - * The 'colour' (ie low bits) within a PMD of a page offset. This comes up - * more often than one might expect in the below functions. - */ -#define PG_PMD_COLOUR ((PMD_SIZE >> PAGE_SHIFT) - 1) - static int dax_pmd_insert_mapping(struct vm_fault *vmf, struct iomap *iomap, - loff_t pos, void **entryp) + loff_t pos, void *entry) { struct address_space *mapping = vmf->vma->vm_file->f_mapping; const sector_t sector = dax_iomap_sector(iomap, pos); @@ -1280,7 +1230,7 @@ static int dax_pmd_insert_mapping(struct vm_fault *vmf, struct iomap *iomap, void *ret = NULL, *kaddr; long length = 0; pgoff_t pgoff; - pfn_t pfn; + pfn_t pfn = {}; int id; if (bdev_dax_pgoff(bdev, sector, size, &pgoff) != 0) @@ -1300,11 +1250,10 @@ static int dax_pmd_insert_mapping(struct vm_fault *vmf, struct iomap *iomap, goto unlock_fallback; dax_read_unlock(id); - ret = dax_insert_mapping_entry(mapping, vmf, *entryp, sector, + ret = dax_insert_mapping_entry(mapping, vmf, entry, sector, RADIX_DAX_PMD); if (IS_ERR(ret)) goto fallback; - *entryp = ret; trace_dax_pmd_insert_mapping(inode, vmf, length, pfn, ret); return vmf_insert_pfn_pmd(vmf->vma, vmf->address, vmf->pmd, @@ -1318,7 +1267,7 @@ fallback: } static int dax_pmd_load_hole(struct vm_fault *vmf, struct iomap *iomap, - void **entryp) + void *entry) { struct address_space *mapping = vmf->vma->vm_file->f_mapping; unsigned long pmd_addr = vmf->address & PMD_MASK; @@ -1333,11 +1282,10 @@ static int dax_pmd_load_hole(struct vm_fault *vmf, struct iomap *iomap, if (unlikely(!zero_page)) goto fallback; - ret = dax_insert_mapping_entry(mapping, vmf, *entryp, 0, - RADIX_DAX_PMD | RADIX_DAX_HZP); + ret = dax_insert_mapping_entry(mapping, vmf, entry, 0, + RADIX_DAX_PMD | RADIX_DAX_ZERO_PAGE); if (IS_ERR(ret)) goto fallback; - *entryp = ret; ptl = pmd_lock(vmf->vma->vm_mm, vmf->pmd); if (!pmd_none(*(vmf->pmd))) { @@ -1383,6 +1331,16 @@ static int dax_iomap_pmd_fault(struct vm_fault *vmf, trace_dax_pmd_fault(inode, vmf, max_pgoff, 0); + /* + * Make sure that the faulting address's PMD offset (color) matches + * the PMD offset from the start of the file. This is necessary so + * that a PMD range in the page table overlaps exactly with a PMD + * range in the radix tree. + */ + if ((vmf->pgoff & PG_PMD_COLOUR) != + ((vmf->address >> PAGE_SHIFT) & PG_PMD_COLOUR)) + goto fallback; + /* Fall back to PTEs if we're going to COW */ if (write && !(vma->vm_flags & VM_SHARED)) goto fallback; @@ -1403,10 +1361,10 @@ static int dax_iomap_pmd_fault(struct vm_fault *vmf, goto fallback; /* - * grab_mapping_entry() will make sure we get a 2M empty entry, a DAX - * PMD or a HZP entry. If it can't (because a 4k page is already in - * the tree, for instance), it will return -EEXIST and we just fall - * back to 4k entries. + * grab_mapping_entry() will make sure we get a 2MiB empty entry, a + * 2MiB zero page entry or a DAX PMD. If it can't (because a 4k page + * is already in the tree, for instance), it will return -EEXIST and + * we just fall back to 4k entries. */ entry = grab_mapping_entry(mapping, pgoff, RADIX_DAX_PMD); if (IS_ERR(entry)) @@ -1439,13 +1397,13 @@ static int dax_iomap_pmd_fault(struct vm_fault *vmf, switch (iomap.type) { case IOMAP_MAPPED: - result = dax_pmd_insert_mapping(vmf, &iomap, pos, &entry); + result = dax_pmd_insert_mapping(vmf, &iomap, pos, entry); break; case IOMAP_UNWRITTEN: case IOMAP_HOLE: if (WARN_ON_ONCE(write)) break; - result = dax_pmd_load_hole(vmf, &iomap, &entry); + result = dax_pmd_load_hole(vmf, &iomap, entry); break; default: WARN_ON_ONCE(1); @@ -1468,7 +1426,7 @@ static int dax_iomap_pmd_fault(struct vm_fault *vmf, &iomap); } unlock_entry: - put_locked_mapping_entry(mapping, pgoff, entry); + put_locked_mapping_entry(mapping, pgoff); fallback: if (result == VM_FAULT_FALLBACK) { split_huge_pmd(vma, vmf->pmd, vmf->address); diff --git a/fs/devpts/inode.c b/fs/devpts/inode.c index 108df2e3602c..7eae33ffa3fc 100644 --- a/fs/devpts/inode.c +++ b/fs/devpts/inode.c @@ -133,6 +133,50 @@ static inline struct pts_fs_info *DEVPTS_SB(struct super_block *sb) return sb->s_fs_info; } +static int devpts_ptmx_path(struct path *path) +{ + struct super_block *sb; + int err; + + /* Has the devpts filesystem already been found? */ + if (path->mnt->mnt_sb->s_magic == DEVPTS_SUPER_MAGIC) + return 0; + + /* Is a devpts filesystem at "pts" in the same directory? */ + err = path_pts(path); + if (err) + return err; + + /* Is the path the root of a devpts filesystem? */ + sb = path->mnt->mnt_sb; + if ((sb->s_magic != DEVPTS_SUPER_MAGIC) || + (path->mnt->mnt_root != sb->s_root)) + return -ENODEV; + + return 0; +} + +struct vfsmount *devpts_mntget(struct file *filp, struct pts_fs_info *fsi) +{ + struct path path; + int err; + + path = filp->f_path; + path_get(&path); + + err = devpts_ptmx_path(&path); + dput(path.dentry); + if (err) { + mntput(path.mnt); + path.mnt = ERR_PTR(err); + } + if (DEVPTS_SB(path.mnt->mnt_sb) != fsi) { + mntput(path.mnt); + path.mnt = ERR_PTR(-ENODEV); + } + return path.mnt; +} + struct pts_fs_info *devpts_acquire(struct file *filp) { struct pts_fs_info *result; @@ -143,27 +187,16 @@ struct pts_fs_info *devpts_acquire(struct file *filp) path = filp->f_path; path_get(&path); - /* Has the devpts filesystem already been found? */ - sb = path.mnt->mnt_sb; - if (sb->s_magic != DEVPTS_SUPER_MAGIC) { - /* Is a devpts filesystem at "pts" in the same directory? */ - err = path_pts(&path); - if (err) { - result = ERR_PTR(err); - goto out; - } - - /* Is the path the root of a devpts filesystem? */ - result = ERR_PTR(-ENODEV); - sb = path.mnt->mnt_sb; - if ((sb->s_magic != DEVPTS_SUPER_MAGIC) || - (path.mnt->mnt_root != sb->s_root)) - goto out; + err = devpts_ptmx_path(&path); + if (err) { + result = ERR_PTR(err); + goto out; } /* * pty code needs to hold extra references in case of last /dev/tty close */ + sb = path.mnt->mnt_sb; atomic_inc(&sb->s_active); result = DEVPTS_SB(sb); diff --git a/fs/direct-io.c b/fs/direct-io.c index 08cf27811e5a..5fa2211e49ae 100644 --- a/fs/direct-io.c +++ b/fs/direct-io.c @@ -111,7 +111,7 @@ struct dio { int op; int op_flags; blk_qc_t bio_cookie; - struct block_device *bio_bdev; + struct gendisk *bio_disk; struct inode *inode; loff_t i_size; /* i_size when submitted */ dio_iodone_t *end_io; /* IO completion function */ @@ -377,7 +377,7 @@ dio_bio_alloc(struct dio *dio, struct dio_submit *sdio, */ bio = bio_alloc(GFP_KERNEL, nr_vecs); - bio->bi_bdev = bdev; + bio_set_dev(bio, bdev); bio->bi_iter.bi_sector = first_sector; bio_set_op_attrs(bio, dio->op, dio->op_flags); if (dio->is_async) @@ -412,7 +412,7 @@ static inline void dio_bio_submit(struct dio *dio, struct dio_submit *sdio) if (dio->is_async && dio->op == REQ_OP_READ && dio->should_dirty) bio_set_pages_dirty(bio); - dio->bio_bdev = bio->bi_bdev; + dio->bio_disk = bio->bi_disk; if (sdio->submit_io) { sdio->submit_io(bio, dio->inode, sdio->logical_offset_in_bio); @@ -458,7 +458,7 @@ static struct bio *dio_await_one(struct dio *dio) dio->waiter = current; spin_unlock_irqrestore(&dio->bio_lock, flags); if (!(dio->iocb->ki_flags & IOCB_HIPRI) || - !blk_mq_poll(bdev_get_queue(dio->bio_bdev), dio->bio_cookie)) + !blk_mq_poll(dio->bio_disk->queue, dio->bio_cookie)) io_schedule(); /* wake up sets us TASK_RUNNING */ spin_lock_irqsave(&dio->bio_lock, flags); diff --git a/fs/dlm/debug_fs.c b/fs/dlm/debug_fs.c index ca7089aeadab..fa08448e35dd 100644 --- a/fs/dlm/debug_fs.c +++ b/fs/dlm/debug_fs.c @@ -68,7 +68,7 @@ static void print_format1_lock(struct seq_file *s, struct dlm_lkb *lkb, if (lkb->lkb_wait_type) seq_printf(s, " wait_type: %d", lkb->lkb_wait_type); - seq_puts(s, "\n"); + seq_putc(s, '\n'); } static void print_format1(struct dlm_rsb *res, struct seq_file *s) @@ -111,7 +111,7 @@ static void print_format1(struct dlm_rsb *res, struct seq_file *s) } if (rsb_flag(res, RSB_VALNOTVALID)) seq_puts(s, " (INVALID)"); - seq_puts(s, "\n"); + seq_putc(s, '\n'); if (seq_has_overflowed(s)) goto out; } @@ -156,7 +156,7 @@ static void print_format1(struct dlm_rsb *res, struct seq_file *s) lkb->lkb_id, print_lockmode(lkb->lkb_rqmode)); if (lkb->lkb_wait_type) seq_printf(s, " wait_type: %d", lkb->lkb_wait_type); - seq_puts(s, "\n"); + seq_putc(s, '\n'); if (seq_has_overflowed(s)) goto out; } @@ -287,7 +287,7 @@ static void print_format3(struct dlm_rsb *r, struct seq_file *s) else seq_printf(s, " %02x", (unsigned char)r->res_name[i]); } - seq_puts(s, "\n"); + seq_putc(s, '\n'); if (seq_has_overflowed(s)) goto out; @@ -298,7 +298,7 @@ static void print_format3(struct dlm_rsb *r, struct seq_file *s) for (i = 0; i < lvblen; i++) seq_printf(s, " %02x", (unsigned char)r->res_lvbptr[i]); - seq_puts(s, "\n"); + seq_putc(s, '\n'); if (seq_has_overflowed(s)) goto out; @@ -361,8 +361,7 @@ static void print_format4(struct dlm_rsb *r, struct seq_file *s) else seq_printf(s, " %02x", (unsigned char)r->res_name[i]); } - seq_puts(s, "\n"); - + seq_putc(s, '\n'); unlock_rsb(r); } @@ -436,7 +435,7 @@ static void *table_seq_start(struct seq_file *seq, loff_t *pos) if (bucket >= ls->ls_rsbtbl_size) return NULL; - ri = kzalloc(sizeof(struct rsbtbl_iter), GFP_NOFS); + ri = kzalloc(sizeof(*ri), GFP_NOFS); if (!ri) return NULL; if (n == 0) @@ -742,7 +741,7 @@ void dlm_delete_debug_file(struct dlm_ls *ls) int dlm_create_debug_file(struct dlm_ls *ls) { - char name[DLM_LOCKSPACE_LEN+8]; + char name[DLM_LOCKSPACE_LEN + 8]; /* format 1 */ @@ -757,7 +756,7 @@ int dlm_create_debug_file(struct dlm_ls *ls) /* format 2 */ memset(name, 0, sizeof(name)); - snprintf(name, DLM_LOCKSPACE_LEN+8, "%s_locks", ls->ls_name); + snprintf(name, DLM_LOCKSPACE_LEN + 8, "%s_locks", ls->ls_name); ls->ls_debug_locks_dentry = debugfs_create_file(name, S_IFREG | S_IRUGO, @@ -770,7 +769,7 @@ int dlm_create_debug_file(struct dlm_ls *ls) /* format 3 */ memset(name, 0, sizeof(name)); - snprintf(name, DLM_LOCKSPACE_LEN+8, "%s_all", ls->ls_name); + snprintf(name, DLM_LOCKSPACE_LEN + 8, "%s_all", ls->ls_name); ls->ls_debug_all_dentry = debugfs_create_file(name, S_IFREG | S_IRUGO, @@ -783,7 +782,7 @@ int dlm_create_debug_file(struct dlm_ls *ls) /* format 4 */ memset(name, 0, sizeof(name)); - snprintf(name, DLM_LOCKSPACE_LEN+8, "%s_toss", ls->ls_name); + snprintf(name, DLM_LOCKSPACE_LEN + 8, "%s_toss", ls->ls_name); ls->ls_debug_toss_dentry = debugfs_create_file(name, S_IFREG | S_IRUGO, @@ -794,7 +793,7 @@ int dlm_create_debug_file(struct dlm_ls *ls) goto fail; memset(name, 0, sizeof(name)); - snprintf(name, DLM_LOCKSPACE_LEN+8, "%s_waiters", ls->ls_name); + snprintf(name, DLM_LOCKSPACE_LEN + 8, "%s_waiters", ls->ls_name); ls->ls_debug_waiters_dentry = debugfs_create_file(name, S_IFREG | S_IRUGO, diff --git a/fs/dlm/lock.c b/fs/dlm/lock.c index 6df332296c66..d4aaddec1b16 100644 --- a/fs/dlm/lock.c +++ b/fs/dlm/lock.c @@ -1426,7 +1426,7 @@ void dlm_scan_waiters(struct dlm_ls *ls) if (!num_nodes) { num_nodes = ls->ls_num_nodes; - warned = kzalloc(num_nodes * sizeof(int), GFP_KERNEL); + warned = kcalloc(num_nodes, sizeof(int), GFP_KERNEL); } if (!warned) continue; @@ -5119,11 +5119,9 @@ void dlm_recover_waiters_pre(struct dlm_ls *ls) int wait_type, stub_unlock_result, stub_cancel_result; int dir_nodeid; - ms_stub = kmalloc(sizeof(struct dlm_message), GFP_KERNEL); - if (!ms_stub) { - log_error(ls, "dlm_recover_waiters_pre no mem"); + ms_stub = kmalloc(sizeof(*ms_stub), GFP_KERNEL); + if (!ms_stub) return; - } mutex_lock(&ls->ls_waiters_mutex); diff --git a/fs/dlm/lockspace.c b/fs/dlm/lockspace.c index 91592b75c309..78a7c855b06b 100644 --- a/fs/dlm/lockspace.c +++ b/fs/dlm/lockspace.c @@ -235,7 +235,7 @@ static int dlm_uevent(struct kset *kset, struct kobject *kobj, return 0; } -static struct kset_uevent_ops dlm_uevent_ops = { +static const struct kset_uevent_ops dlm_uevent_ops = { .uevent = dlm_uevent, }; @@ -453,9 +453,14 @@ static int new_lockspace(const char *name, const char *cluster, *ops_result = 0; } + if (!cluster) + log_print("dlm cluster name '%s' is being used without an application provided cluster name", + dlm_config.ci_cluster_name); + if (dlm_config.ci_recover_callbacks && cluster && strncmp(cluster, dlm_config.ci_cluster_name, DLM_LOCKSPACE_LEN)) { - log_print("dlm cluster name %s mismatch %s", + log_print("dlm cluster name '%s' does not match " + "the application cluster name '%s'", dlm_config.ci_cluster_name, cluster); error = -EBADR; goto out; diff --git a/fs/dlm/lowcomms.c b/fs/dlm/lowcomms.c index 9382db998ec9..4813d0e0cd9b 100644 --- a/fs/dlm/lowcomms.c +++ b/fs/dlm/lowcomms.c @@ -729,7 +729,7 @@ static int tcp_accept_from_sock(struct connection *con) mutex_unlock(&connections_lock); memset(&peeraddr, 0, sizeof(peeraddr)); - result = sock_create_kern(&init_net, dlm_local_addr[0]->ss_family, + result = sock_create_lite(dlm_local_addr[0]->ss_family, SOCK_STREAM, IPPROTO_TCP, &newsock); if (result < 0) return -ENOMEM; diff --git a/fs/dlm/member.c b/fs/dlm/member.c index 9c47f1c14a8b..3fda3832cf6a 100644 --- a/fs/dlm/member.c +++ b/fs/dlm/member.c @@ -217,8 +217,7 @@ int dlm_slots_assign(struct dlm_ls *ls, int *num_slots, int *slots_size, } array_size = max + need; - - array = kzalloc(array_size * sizeof(struct dlm_slot), GFP_NOFS); + array = kcalloc(array_size, sizeof(*array), GFP_NOFS); if (!array) return -ENOMEM; @@ -319,7 +318,7 @@ static int dlm_add_member(struct dlm_ls *ls, struct dlm_config_node *node) struct dlm_member *memb; int error; - memb = kzalloc(sizeof(struct dlm_member), GFP_NOFS); + memb = kzalloc(sizeof(*memb), GFP_NOFS); if (!memb) return -ENOMEM; @@ -405,8 +404,7 @@ static void make_member_array(struct dlm_ls *ls) } ls->ls_total_weight = total; - - array = kmalloc(sizeof(int) * total, GFP_NOFS); + array = kmalloc_array(total, sizeof(*array), GFP_NOFS); if (!array) return; @@ -492,8 +490,7 @@ void dlm_lsop_recover_done(struct dlm_ls *ls) return; num = ls->ls_num_nodes; - - slots = kzalloc(num * sizeof(struct dlm_slot), GFP_KERNEL); + slots = kcalloc(num, sizeof(*slots), GFP_KERNEL); if (!slots) return; @@ -673,11 +670,11 @@ int dlm_ls_stop(struct dlm_ls *ls) int dlm_ls_start(struct dlm_ls *ls) { - struct dlm_recover *rv = NULL, *rv_old; + struct dlm_recover *rv, *rv_old; struct dlm_config_node *nodes; int error, count; - rv = kzalloc(sizeof(struct dlm_recover), GFP_NOFS); + rv = kzalloc(sizeof(*rv), GFP_NOFS); if (!rv) return -ENOMEM; diff --git a/fs/dlm/plock.c b/fs/dlm/plock.c index d401425f602a..e631b1689228 100644 --- a/fs/dlm/plock.c +++ b/fs/dlm/plock.c @@ -367,7 +367,7 @@ int dlm_posix_get(dlm_lockspace_t *lockspace, u64 number, struct file *file, locks_init_lock(fl); fl->fl_type = (op->info.ex) ? F_WRLCK : F_RDLCK; fl->fl_flags = FL_POSIX; - fl->fl_pid = op->info.pid; + fl->fl_pid = -op->info.pid; fl->fl_start = op->info.start; fl->fl_end = op->info.end; rv = 0; diff --git a/fs/dlm/user.c b/fs/dlm/user.c index 23488f559cf9..d18e7a539f11 100644 --- a/fs/dlm/user.c +++ b/fs/dlm/user.c @@ -123,6 +123,8 @@ static void compat_input(struct dlm_write_request *kb, static void compat_output(struct dlm_lock_result *res, struct dlm_lock_result32 *res32) { + memset(res32, 0, sizeof(*res32)); + res32->version[0] = res->version[0]; res32->version[1] = res->version[1]; res32->version[2] = res->version[2]; @@ -355,6 +357,10 @@ static int dlm_device_register(struct dlm_ls *ls, char *name) error = misc_register(&ls->ls_device); if (error) { kfree(ls->ls_device.name); + /* this has to be set to NULL + * to avoid a double-free in dlm_device_deregister + */ + ls->ls_device.name = NULL; } fail: return error; diff --git a/fs/ecryptfs/file.c b/fs/ecryptfs/file.c index ca4e83750214..c74ed3ca3372 100644 --- a/fs/ecryptfs/file.c +++ b/fs/ecryptfs/file.c @@ -328,7 +328,7 @@ ecryptfs_fsync(struct file *file, loff_t start, loff_t end, int datasync) { int rc; - rc = filemap_write_and_wait(file->f_mapping); + rc = file_write_and_wait(file); if (rc) return rc; diff --git a/fs/eventpoll.c b/fs/eventpoll.c index e767e4389cb1..2fabd19cdeea 100644 --- a/fs/eventpoll.c +++ b/fs/eventpoll.c @@ -205,7 +205,7 @@ struct eventpoll { struct list_head rdllist; /* RB tree root used to store monitored fd structs */ - struct rb_root rbr; + struct rb_root_cached rbr; /* * This is a single linked list that chains all the "struct epitem" that @@ -600,8 +600,13 @@ static void ep_remove_wait_queue(struct eppoll_entry *pwq) wait_queue_head_t *whead; rcu_read_lock(); - /* If it is cleared by POLLFREE, it should be rcu-safe */ - whead = rcu_dereference(pwq->whead); + /* + * If it is cleared by POLLFREE, it should be rcu-safe. + * If we read NULL we need a barrier paired with + * smp_store_release() in ep_poll_callback(), otherwise + * we rely on whead->lock. + */ + whead = smp_load_acquire(&pwq->whead); if (whead) remove_wait_queue(whead, &pwq->wait); rcu_read_unlock(); @@ -791,7 +796,7 @@ static int ep_remove(struct eventpoll *ep, struct epitem *epi) list_del_rcu(&epi->fllink); spin_unlock(&file->f_lock); - rb_erase(&epi->rbn, &ep->rbr); + rb_erase_cached(&epi->rbn, &ep->rbr); spin_lock_irqsave(&ep->lock, flags); if (ep_is_linked(&epi->rdllink)) @@ -835,7 +840,7 @@ static void ep_free(struct eventpoll *ep) /* * Walks through the whole tree by unregistering poll callbacks. */ - for (rbp = rb_first(&ep->rbr); rbp; rbp = rb_next(rbp)) { + for (rbp = rb_first_cached(&ep->rbr); rbp; rbp = rb_next(rbp)) { epi = rb_entry(rbp, struct epitem, rbn); ep_unregister_pollwait(ep, epi); @@ -851,7 +856,7 @@ static void ep_free(struct eventpoll *ep) * a lockdep warning. */ mutex_lock(&ep->mtx); - while ((rbp = rb_first(&ep->rbr)) != NULL) { + while ((rbp = rb_first_cached(&ep->rbr)) != NULL) { epi = rb_entry(rbp, struct epitem, rbn); ep_remove(ep, epi); cond_resched(); @@ -958,7 +963,7 @@ static void ep_show_fdinfo(struct seq_file *m, struct file *f) struct rb_node *rbp; mutex_lock(&ep->mtx); - for (rbp = rb_first(&ep->rbr); rbp; rbp = rb_next(rbp)) { + for (rbp = rb_first_cached(&ep->rbr); rbp; rbp = rb_next(rbp)) { struct epitem *epi = rb_entry(rbp, struct epitem, rbn); struct inode *inode = file_inode(epi->ffd.file); @@ -1035,7 +1040,7 @@ static int ep_alloc(struct eventpoll **pep) init_waitqueue_head(&ep->wq); init_waitqueue_head(&ep->poll_wait); INIT_LIST_HEAD(&ep->rdllist); - ep->rbr = RB_ROOT; + ep->rbr = RB_ROOT_CACHED; ep->ovflist = EP_UNACTIVE_PTR; ep->user = user; @@ -1061,7 +1066,7 @@ static struct epitem *ep_find(struct eventpoll *ep, struct file *file, int fd) struct epoll_filefd ffd; ep_set_ffd(&ffd, file, fd); - for (rbp = ep->rbr.rb_node; rbp; ) { + for (rbp = ep->rbr.rb_root.rb_node; rbp; ) { epi = rb_entry(rbp, struct epitem, rbn); kcmp = ep_cmp_ffd(&ffd, &epi->ffd); if (kcmp > 0) @@ -1083,7 +1088,7 @@ static struct epitem *ep_find_tfd(struct eventpoll *ep, int tfd, unsigned long t struct rb_node *rbp; struct epitem *epi; - for (rbp = rb_first(&ep->rbr); rbp; rbp = rb_next(rbp)) { + for (rbp = rb_first_cached(&ep->rbr); rbp; rbp = rb_next(rbp)) { epi = rb_entry(rbp, struct epitem, rbn); if (epi->ffd.fd == tfd) { if (toff == 0) @@ -1134,17 +1139,6 @@ static int ep_poll_callback(wait_queue_entry_t *wait, unsigned mode, int sync, v struct eventpoll *ep = epi->ep; int ewake = 0; - if ((unsigned long)key & POLLFREE) { - ep_pwq_from_wait(wait)->whead = NULL; - /* - * whead = NULL above can race with ep_remove_wait_queue() - * which can do another remove_wait_queue() after us, so we - * can't use __remove_wait_queue(). whead->lock is held by - * the caller. - */ - list_del_init(&wait->entry); - } - spin_lock_irqsave(&ep->lock, flags); ep_set_busy_poll_napi_id(epi); @@ -1228,10 +1222,26 @@ out_unlock: if (pwake) ep_poll_safewake(&ep->poll_wait); - if (epi->event.events & EPOLLEXCLUSIVE) - return ewake; + if (!(epi->event.events & EPOLLEXCLUSIVE)) + ewake = 1; - return 1; + if ((unsigned long)key & POLLFREE) { + /* + * If we race with ep_remove_wait_queue() it can miss + * ->whead = NULL and do another remove_wait_queue() after + * us, so we can't use __remove_wait_queue(). + */ + list_del_init(&wait->entry); + /* + * ->whead != NULL protects us from the race with ep_free() + * or ep_remove(), ep_remove_wait_queue() takes whead->lock + * held by the caller. Once we nullify it, nothing protects + * ep/epi or even wait. + */ + smp_store_release(&ep_pwq_from_wait(wait)->whead, NULL); + } + + return ewake; } /* @@ -1263,20 +1273,22 @@ static void ep_ptable_queue_proc(struct file *file, wait_queue_head_t *whead, static void ep_rbtree_insert(struct eventpoll *ep, struct epitem *epi) { int kcmp; - struct rb_node **p = &ep->rbr.rb_node, *parent = NULL; + struct rb_node **p = &ep->rbr.rb_root.rb_node, *parent = NULL; struct epitem *epic; + bool leftmost = true; while (*p) { parent = *p; epic = rb_entry(parent, struct epitem, rbn); kcmp = ep_cmp_ffd(&epi->ffd, &epic->ffd); - if (kcmp > 0) + if (kcmp > 0) { p = &parent->rb_right; - else + leftmost = false; + } else p = &parent->rb_left; } rb_link_node(&epi->rbn, parent, p); - rb_insert_color(&epi->rbn, &ep->rbr); + rb_insert_color_cached(&epi->rbn, &ep->rbr, leftmost); } @@ -1520,7 +1532,7 @@ error_remove_epi: list_del_rcu(&epi->fllink); spin_unlock(&tfile->f_lock); - rb_erase(&epi->rbn, &ep->rbr); + rb_erase_cached(&epi->rbn, &ep->rbr); error_unregister: ep_unregister_pollwait(ep, epi); @@ -1868,7 +1880,7 @@ static int ep_loop_check_proc(void *priv, void *cookie, int call_nests) mutex_lock_nested(&ep->mtx, call_nests + 1); ep->visited = 1; list_add(&ep->visited_list_link, &visited_list); - for (rbp = rb_first(&ep->rbr); rbp; rbp = rb_next(rbp)) { + for (rbp = rb_first_cached(&ep->rbr); rbp; rbp = rb_next(rbp)) { epi = rb_entry(rbp, struct epitem, rbn); if (unlikely(is_file_epoll(epi->ffd.file))) { ep_tovisit = epi->ffd.file->private_data; diff --git a/fs/exec.c b/fs/exec.c index 62175cbcc801..01a9fb9d8ac3 100644 --- a/fs/exec.c +++ b/fs/exec.c @@ -1259,6 +1259,12 @@ void __set_task_comm(struct task_struct *tsk, const char *buf, bool exec) perf_event_comm(tsk, exec); } +/* + * Calling this is the point of no return. None of the failures will be + * seen by userspace since either the process is already taking a fatal + * signal (via de_thread() or coredump), or will have SEGV raised + * (after exec_mmap()) by search_binary_handlers (see below). + */ int flush_old_exec(struct linux_binprm * bprm) { int retval; @@ -1286,7 +1292,13 @@ int flush_old_exec(struct linux_binprm * bprm) if (retval) goto out; - bprm->mm = NULL; /* We're using it now */ + /* + * After clearing bprm->mm (to mark that current is using the + * prepared mm now), we have nothing left of the original + * process. If anything from here on returns an error, the check + * in search_binary_handler() will SEGV current. + */ + bprm->mm = NULL; set_fs(USER_DS); current->flags &= ~(PF_RANDOMIZE | PF_FORKNOEXEC | PF_KTHREAD | @@ -1331,15 +1343,38 @@ EXPORT_SYMBOL(would_dump); void setup_new_exec(struct linux_binprm * bprm) { + /* + * Once here, prepare_binrpm() will not be called any more, so + * the final state of setuid/setgid/fscaps can be merged into the + * secureexec flag. + */ + bprm->secureexec |= bprm->cap_elevated; + + if (bprm->secureexec) { + /* Make sure parent cannot signal privileged process. */ + current->pdeath_signal = 0; + + /* + * For secureexec, reset the stack limit to sane default to + * avoid bad behavior from the prior rlimits. This has to + * happen before arch_pick_mmap_layout(), which examines + * RLIMIT_STACK, but after the point of no return to avoid + * needing to clean up the change on failure. + */ + if (current->signal->rlim[RLIMIT_STACK].rlim_cur > _STK_LIM) + current->signal->rlim[RLIMIT_STACK].rlim_cur = _STK_LIM; + } + arch_pick_mmap_layout(current->mm); - /* This is the point of no return */ current->sas_ss_sp = current->sas_ss_size = 0; - if (uid_eq(current_euid(), current_uid()) && gid_eq(current_egid(), current_gid())) - set_dumpable(current->mm, SUID_DUMP_USER); - else + /* Figure out dumpability. */ + if (bprm->interp_flags & BINPRM_FLAGS_ENFORCE_NONDUMP || + bprm->secureexec) set_dumpable(current->mm, suid_dumpable); + else + set_dumpable(current->mm, SUID_DUMP_USER); arch_setup_new_exec(); perf_event_exec(); @@ -1351,15 +1386,6 @@ void setup_new_exec(struct linux_binprm * bprm) */ current->mm->task_size = TASK_SIZE; - /* install the new credentials */ - if (!uid_eq(bprm->cred->uid, current_euid()) || - !gid_eq(bprm->cred->gid, current_egid())) { - current->pdeath_signal = 0; - } else { - if (bprm->interp_flags & BINPRM_FLAGS_ENFORCE_NONDUMP) - set_dumpable(current->mm, suid_dumpable); - } - /* An exec changes our domain. We are no longer part of the thread group */ current->self_exec_id++; @@ -1548,7 +1574,7 @@ int prepare_binprm(struct linux_binprm *bprm) retval = security_bprm_set_creds(bprm); if (retval) return retval; - bprm->cred_prepared = 1; + bprm->called_set_creds = 1; memset(bprm->buf, 0, BINPRM_BUF_SIZE); return kernel_read(bprm->file, 0, bprm->buf, BINPRM_BUF_SIZE); diff --git a/fs/exofs/file.c b/fs/exofs/file.c index 28645f0640f7..a94594ea2aa3 100644 --- a/fs/exofs/file.c +++ b/fs/exofs/file.c @@ -48,7 +48,7 @@ static int exofs_file_fsync(struct file *filp, loff_t start, loff_t end, struct inode *inode = filp->f_mapping->host; int ret; - ret = filemap_write_and_wait_range(inode->i_mapping, start, end); + ret = file_write_and_wait_range(filp, start, end); if (ret) return ret; diff --git a/fs/exofs/ore.c b/fs/exofs/ore.c index 8bb72807e70d..3c6a9c156b7a 100644 --- a/fs/exofs/ore.c +++ b/fs/exofs/ore.c @@ -869,7 +869,7 @@ static int _write_mirror(struct ore_io_state *ios, int cur_comp) goto out; } - bio->bi_bdev = NULL; + bio->bi_disk = NULL; bio->bi_next = NULL; per_dev->offset = master_dev->offset; per_dev->length = master_dev->length; diff --git a/fs/ext2/file.c b/fs/ext2/file.c index d34d32bdc944..ff3a3636a5ca 100644 --- a/fs/ext2/file.c +++ b/fs/ext2/file.c @@ -107,29 +107,6 @@ static int ext2_dax_fault(struct vm_fault *vmf) return ret; } -static int ext2_dax_pfn_mkwrite(struct vm_fault *vmf) -{ - struct inode *inode = file_inode(vmf->vma->vm_file); - struct ext2_inode_info *ei = EXT2_I(inode); - loff_t size; - int ret; - - sb_start_pagefault(inode->i_sb); - file_update_time(vmf->vma->vm_file); - down_read(&ei->dax_sem); - - /* check that the faulting page hasn't raced with truncate */ - size = (i_size_read(inode) + PAGE_SIZE - 1) >> PAGE_SHIFT; - if (vmf->pgoff >= size) - ret = VM_FAULT_SIGBUS; - else - ret = dax_pfn_mkwrite(vmf); - - up_read(&ei->dax_sem); - sb_end_pagefault(inode->i_sb); - return ret; -} - static const struct vm_operations_struct ext2_dax_vm_ops = { .fault = ext2_dax_fault, /* @@ -138,7 +115,7 @@ static const struct vm_operations_struct ext2_dax_vm_ops = { * will always fail and fail back to regular faults. */ .page_mkwrite = ext2_dax_fault, - .pfn_mkwrite = ext2_dax_pfn_mkwrite, + .pfn_mkwrite = ext2_dax_fault, }; static int ext2_file_mmap(struct file *file, struct vm_area_struct *vma) diff --git a/fs/ext4/dir.c b/fs/ext4/dir.c index e8b365000d73..b04e882179c6 100644 --- a/fs/ext4/dir.c +++ b/fs/ext4/dir.c @@ -411,7 +411,7 @@ static struct dir_private_info *ext4_htree_create_dir_info(struct file *filp, { struct dir_private_info *p; - p = kzalloc(sizeof(struct dir_private_info), GFP_KERNEL); + p = kzalloc(sizeof(*p), GFP_KERNEL); if (!p) return NULL; p->curr_hash = pos2maj_hash(filp, pos); diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h index a2bb7d2870e4..84b9da192238 100644 --- a/fs/ext4/ext4.h +++ b/fs/ext4/ext4.h @@ -838,13 +838,11 @@ static inline void ext4_decode_extra_time(struct timespec *time, __le32 extra) { if (unlikely(sizeof(time->tv_sec) > 4 && (extra & cpu_to_le32(EXT4_EPOCH_MASK)))) { -#if LINUX_VERSION_CODE < KERNEL_VERSION(4,20,0) + +#if 1 /* Handle legacy encoding of pre-1970 dates with epoch - * bits 1,1. We assume that by kernel version 4.20, - * everyone will have run fsck over the affected - * filesystems to correct the problem. (This - * backwards compatibility may be removed before this - * time, at the discretion of the ext4 developers.) + * bits 1,1. (This backwards compatibility may be removed + * at the discretion of the ext4 developers.) */ u64 extra_bits = le32_to_cpu(extra) & EXT4_EPOCH_MASK; if (extra_bits == 3 && ((time->tv_sec) & 0x80000000) != 0) @@ -1567,6 +1565,7 @@ enum { nolocking */ EXT4_STATE_MAY_INLINE_DATA, /* may have in-inode data */ EXT4_STATE_EXT_PRECACHED, /* extents have been precached */ + EXT4_STATE_LUSTRE_EA_INODE, /* Lustre-style ea_inode */ }; #define EXT4_INODE_BIT_FNS(name, field, offset) \ diff --git a/fs/ext4/file.c b/fs/ext4/file.c index 0d7cf0cc9b87..57dcaea762c3 100644 --- a/fs/ext4/file.c +++ b/fs/ext4/file.c @@ -279,7 +279,20 @@ static int ext4_dax_huge_fault(struct vm_fault *vmf, handle_t *handle = NULL; struct inode *inode = file_inode(vmf->vma->vm_file); struct super_block *sb = inode->i_sb; - bool write = vmf->flags & FAULT_FLAG_WRITE; + + /* + * We have to distinguish real writes from writes which will result in a + * COW page; COW writes should *not* poke the journal (the file will not + * be changed). Doing so would cause unintended failures when mounted + * read-only. + * + * We check for VM_SHARED rather than vmf->cow_page since the latter is + * unset for pe_size != PE_SIZE_PTE (i.e. only in do_cow_fault); for + * other sizes, dax_iomap_fault will handle splitting / fallback so that + * we eventually come back with a COW page. + */ + bool write = (vmf->flags & FAULT_FLAG_WRITE) && + (vmf->vma->vm_flags & VM_SHARED); if (write) { sb_start_pagefault(sb); @@ -311,41 +324,11 @@ static int ext4_dax_fault(struct vm_fault *vmf) return ext4_dax_huge_fault(vmf, PE_SIZE_PTE); } -/* - * Handle write fault for VM_MIXEDMAP mappings. Similarly to ext4_dax_fault() - * handler we check for races agaist truncate. Note that since we cycle through - * i_mmap_sem, we are sure that also any hole punching that began before we - * were called is finished by now and so if it included part of the file we - * are working on, our pte will get unmapped and the check for pte_same() in - * wp_pfn_shared() fails. Thus fault gets retried and things work out as - * desired. - */ -static int ext4_dax_pfn_mkwrite(struct vm_fault *vmf) -{ - struct inode *inode = file_inode(vmf->vma->vm_file); - struct super_block *sb = inode->i_sb; - loff_t size; - int ret; - - sb_start_pagefault(sb); - file_update_time(vmf->vma->vm_file); - down_read(&EXT4_I(inode)->i_mmap_sem); - size = (i_size_read(inode) + PAGE_SIZE - 1) >> PAGE_SHIFT; - if (vmf->pgoff >= size) - ret = VM_FAULT_SIGBUS; - else - ret = dax_pfn_mkwrite(vmf); - up_read(&EXT4_I(inode)->i_mmap_sem); - sb_end_pagefault(sb); - - return ret; -} - static const struct vm_operations_struct ext4_dax_vm_ops = { .fault = ext4_dax_fault, .huge_fault = ext4_dax_huge_fault, .page_mkwrite = ext4_dax_fault, - .pfn_mkwrite = ext4_dax_pfn_mkwrite, + .pfn_mkwrite = ext4_dax_fault, }; #else #define ext4_dax_vm_ops ext4_file_vm_ops @@ -494,12 +477,11 @@ static int ext4_find_unwritten_pgoff(struct inode *inode, pagevec_init(&pvec, 0); do { - int i, num; + int i; unsigned long nr_pages; - num = min_t(pgoff_t, end - index, PAGEVEC_SIZE - 1) + 1; - nr_pages = pagevec_lookup(&pvec, inode->i_mapping, index, - (pgoff_t)num); + nr_pages = pagevec_lookup_range(&pvec, inode->i_mapping, + &index, end); if (nr_pages == 0) break; @@ -518,9 +500,6 @@ static int ext4_find_unwritten_pgoff(struct inode *inode, goto out; } - if (page->index > end) - goto out; - lock_page(page); if (unlikely(page->mapping != inode->i_mapping)) { @@ -563,14 +542,10 @@ next: unlock_page(page); } - /* The no. of pages is less than our desired, we are done. */ - if (nr_pages < num) - break; - - index = pvec.pages[i - 1]->index + 1; pagevec_release(&pvec); } while (index <= end); + /* There are no pages upto endoff - that would be a hole in there. */ if (whence == SEEK_HOLE && lastoff < endoff) { found = 1; *offset = lastoff; @@ -595,7 +570,7 @@ static loff_t ext4_seek_data(struct file *file, loff_t offset, loff_t maxsize) inode_lock(inode); isize = i_size_read(inode); - if (offset >= isize) { + if (offset < 0 || offset >= isize) { inode_unlock(inode); return -ENXIO; } @@ -658,7 +633,7 @@ static loff_t ext4_seek_hole(struct file *file, loff_t offset, loff_t maxsize) inode_lock(inode); isize = i_size_read(inode); - if (offset >= isize) { + if (offset < 0 || offset >= isize) { inode_unlock(inode); return -ENXIO; } diff --git a/fs/ext4/hash.c b/fs/ext4/hash.c index 38b8a96eb97c..00c6dd29e621 100644 --- a/fs/ext4/hash.c +++ b/fs/ext4/hash.c @@ -148,8 +148,6 @@ static void str2hashbuf_signed(const char *msg, int len, __u32 *buf, int num) if (len > num*4) len = num * 4; for (i = 0; i < len; i++) { - if ((i % 4) == 0) - val = pad; val = ((int) scp[i]) + (val << 8); if ((i % 4) == 3) { *buf++ = val; @@ -176,8 +174,6 @@ static void str2hashbuf_unsigned(const char *msg, int len, __u32 *buf, int num) if (len > num*4) len = num * 4; for (i = 0; i < len; i++) { - if ((i % 4) == 0) - val = pad; val = ((int) ucp[i]) + (val << 8); if ((i % 4) == 3) { *buf++ = val; diff --git a/fs/ext4/ialloc.c b/fs/ext4/ialloc.c index 507bfb3344d4..71e93a23cec3 100644 --- a/fs/ext4/ialloc.c +++ b/fs/ext4/ialloc.c @@ -692,24 +692,25 @@ static int find_group_other(struct super_block *sb, struct inode *parent, * somewhat arbitrary...) */ #define RECENTCY_MIN 5 -#define RECENTCY_DIRTY 30 +#define RECENTCY_DIRTY 300 static int recently_deleted(struct super_block *sb, ext4_group_t group, int ino) { struct ext4_group_desc *gdp; struct ext4_inode *raw_inode; struct buffer_head *bh; - unsigned long dtime, now; - int inodes_per_block = EXT4_SB(sb)->s_inodes_per_block; - int offset, ret = 0, recentcy = RECENTCY_MIN; + int inodes_per_block = EXT4_SB(sb)->s_inodes_per_block; + int offset, ret = 0; + int recentcy = RECENTCY_MIN; + u32 dtime, now; gdp = ext4_get_group_desc(sb, group, NULL); if (unlikely(!gdp)) return 0; - bh = sb_getblk(sb, ext4_inode_table(sb, gdp) + + bh = sb_find_get_block(sb, ext4_inode_table(sb, gdp) + (ino / inodes_per_block)); - if (unlikely(!bh) || !buffer_uptodate(bh)) + if (!bh || !buffer_uptodate(bh)) /* * If the block is not in the buffer cache, then it * must have been written out. @@ -718,18 +719,45 @@ static int recently_deleted(struct super_block *sb, ext4_group_t group, int ino) offset = (ino % inodes_per_block) * EXT4_INODE_SIZE(sb); raw_inode = (struct ext4_inode *) (bh->b_data + offset); + + /* i_dtime is only 32 bits on disk, but we only care about relative + * times in the range of a few minutes (i.e. long enough to sync a + * recently-deleted inode to disk), so using the low 32 bits of the + * clock (a 68 year range) is enough, see time_before32() */ dtime = le32_to_cpu(raw_inode->i_dtime); - now = get_seconds(); + now = ktime_get_real_seconds(); if (buffer_dirty(bh)) recentcy += RECENTCY_DIRTY; - if (dtime && (dtime < now) && (now < dtime + recentcy)) + if (dtime && time_before32(dtime, now) && + time_before32(now, dtime + recentcy)) ret = 1; out: brelse(bh); return ret; } +static int find_inode_bit(struct super_block *sb, ext4_group_t group, + struct buffer_head *bitmap, unsigned long *ino) +{ +next: + *ino = ext4_find_next_zero_bit((unsigned long *) + bitmap->b_data, + EXT4_INODES_PER_GROUP(sb), *ino); + if (*ino >= EXT4_INODES_PER_GROUP(sb)) + return 0; + + if ((EXT4_SB(sb)->s_journal == NULL) && + recently_deleted(sb, group, *ino)) { + *ino = *ino + 1; + if (*ino < EXT4_INODES_PER_GROUP(sb)) + goto next; + return 0; + } + + return 1; +} + /* * There are two policies for allocating an inode. If the new inode is * a directory, then a forward search is made for a block group with both @@ -892,19 +920,13 @@ got_group: /* * Check free inodes count before loading bitmap. */ - if (ext4_free_inodes_count(sb, gdp) == 0) { - if (++group == ngroups) - group = 0; - continue; - } + if (ext4_free_inodes_count(sb, gdp) == 0) + goto next_group; grp = ext4_get_group_info(sb, group); /* Skip groups with already-known suspicious inode tables */ - if (EXT4_MB_GRP_IBITMAP_CORRUPT(grp)) { - if (++group == ngroups) - group = 0; - continue; - } + if (EXT4_MB_GRP_IBITMAP_CORRUPT(grp)) + goto next_group; brelse(inode_bitmap_bh); inode_bitmap_bh = ext4_read_inode_bitmap(sb, group); @@ -912,27 +934,20 @@ got_group: if (EXT4_MB_GRP_IBITMAP_CORRUPT(grp) || IS_ERR(inode_bitmap_bh)) { inode_bitmap_bh = NULL; - if (++group == ngroups) - group = 0; - continue; + goto next_group; } repeat_in_this_group: - ino = ext4_find_next_zero_bit((unsigned long *) - inode_bitmap_bh->b_data, - EXT4_INODES_PER_GROUP(sb), ino); - if (ino >= EXT4_INODES_PER_GROUP(sb)) + ret2 = find_inode_bit(sb, group, inode_bitmap_bh, &ino); + if (!ret2) goto next_group; - if (group == 0 && (ino+1) < EXT4_FIRST_INO(sb)) { + + if (group == 0 && (ino + 1) < EXT4_FIRST_INO(sb)) { ext4_error(sb, "reserved inode found cleared - " "inode=%lu", ino + 1); - continue; - } - if ((EXT4_SB(sb)->s_journal == NULL) && - recently_deleted(sb, group, ino)) { - ino++; - goto next_inode; + goto next_group; } + if (!handle) { BUG_ON(nblocks <= 0); handle = __ext4_journal_start_sb(dir->i_sb, line_no, @@ -952,11 +967,23 @@ repeat_in_this_group: } ext4_lock_group(sb, group); ret2 = ext4_test_and_set_bit(ino, inode_bitmap_bh->b_data); + if (ret2) { + /* Someone already took the bit. Repeat the search + * with lock held. + */ + ret2 = find_inode_bit(sb, group, inode_bitmap_bh, &ino); + if (ret2) { + ext4_set_bit(ino, inode_bitmap_bh->b_data); + ret2 = 0; + } else { + ret2 = 1; /* we didn't grab the inode */ + } + } ext4_unlock_group(sb, group); ino++; /* the inode bitmap is zero-based */ if (!ret2) goto got; /* we grabbed the inode! */ -next_inode: + if (ino < EXT4_INODES_PER_GROUP(sb)) goto repeat_in_this_group; next_group: diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c index c774bdc22759..e963508ea35f 100644 --- a/fs/ext4/inode.c +++ b/fs/ext4/inode.c @@ -1720,13 +1720,12 @@ static void mpage_release_unused_pages(struct mpage_da_data *mpd, pagevec_init(&pvec, 0); while (index <= end) { - nr_pages = pagevec_lookup(&pvec, mapping, index, PAGEVEC_SIZE); + nr_pages = pagevec_lookup_range(&pvec, mapping, &index, end); if (nr_pages == 0) break; for (i = 0; i < nr_pages; i++) { struct page *page = pvec.pages[i]; - if (page->index > end) - break; + BUG_ON(!PageLocked(page)); BUG_ON(PageWriteback(page)); if (invalidate) { @@ -1737,7 +1736,6 @@ static void mpage_release_unused_pages(struct mpage_da_data *mpd, } unlock_page(page); } - index = pvec.pages[nr_pages - 1]->index + 1; pagevec_release(&pvec); } } @@ -2348,17 +2346,13 @@ static int mpage_map_and_submit_buffers(struct mpage_da_data *mpd) pagevec_init(&pvec, 0); while (start <= end) { - nr_pages = pagevec_lookup(&pvec, inode->i_mapping, start, - PAGEVEC_SIZE); + nr_pages = pagevec_lookup_range(&pvec, inode->i_mapping, + &start, end); if (nr_pages == 0) break; for (i = 0; i < nr_pages; i++) { struct page *page = pvec.pages[i]; - if (page->index > end) - break; - /* Up to 'end' pages must be contiguous */ - BUG_ON(page->index != start); bh = head = page_buffers(page); do { if (lblk < mpd->map.m_lblk) @@ -2403,7 +2397,6 @@ static int mpage_map_and_submit_buffers(struct mpage_da_data *mpd) pagevec_release(&pvec); return err; } - start++; } pagevec_release(&pvec); } @@ -4897,14 +4890,6 @@ struct inode *ext4_iget(struct super_block *sb, unsigned long ino) brelse(iloc.bh); ext4_set_inode_flags(inode); - if (ei->i_flags & EXT4_EA_INODE_FL) { - ext4_xattr_inode_set_class(inode); - - inode_lock(inode); - inode->i_flags |= S_NOQUOTA; - inode_unlock(inode); - } - unlock_new_inode(inode); return inode; diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c index 5a1052627a81..701085620cd8 100644 --- a/fs/ext4/mballoc.c +++ b/fs/ext4/mballoc.c @@ -2300,7 +2300,7 @@ static int ext4_mb_seq_groups_show(struct seq_file *seq, void *v) EXT4_MAX_BLOCK_LOG_SIZE); struct sg { struct ext4_group_info info; - ext4_grpblk_t counters[blocksize_bits + 2]; + ext4_grpblk_t counters[EXT4_MAX_BLOCK_LOG_SIZE + 2]; } sg; group--; @@ -2309,6 +2309,9 @@ static int ext4_mb_seq_groups_show(struct seq_file *seq, void *v) " 2^0 2^1 2^2 2^3 2^4 2^5 2^6 " " 2^7 2^8 2^9 2^10 2^11 2^12 2^13 ]\n"); + i = (blocksize_bits + 2) * sizeof(sg.info.bb_counters[0]) + + sizeof(struct ext4_group_info); + grinfo = ext4_get_group_info(sb, group); /* Load the group info in memory only if not already loaded. */ if (unlikely(EXT4_MB_GRP_NEED_INIT(grinfo))) { @@ -2320,7 +2323,7 @@ static int ext4_mb_seq_groups_show(struct seq_file *seq, void *v) buddy_loaded = 1; } - memcpy(&sg, ext4_get_group_info(sb, group), sizeof(sg)); + memcpy(&sg, ext4_get_group_info(sb, group), i); if (buddy_loaded) ext4_mb_unload_buddy(&e4b); diff --git a/fs/ext4/mmp.c b/fs/ext4/mmp.c index eb9835638680..77cdce1f17ce 100644 --- a/fs/ext4/mmp.c +++ b/fs/ext4/mmp.c @@ -367,7 +367,7 @@ skip: goto failed; } - mmpd_data = kmalloc(sizeof(struct mmpd_data), GFP_KERNEL); + mmpd_data = kmalloc(sizeof(*mmpd_data), GFP_KERNEL); if (!mmpd_data) { ext4_warning(sb, "not enough memory for mmpd_data"); goto failed; diff --git a/fs/ext4/page-io.c b/fs/ext4/page-io.c index c2fce4478cca..55ad7dd149d0 100644 --- a/fs/ext4/page-io.c +++ b/fs/ext4/page-io.c @@ -300,7 +300,7 @@ static void ext4_end_bio(struct bio *bio) char b[BDEVNAME_SIZE]; if (WARN_ONCE(!io_end, "io_end is NULL: %s: sector %Lu len %u err %d\n", - bdevname(bio->bi_bdev, b), + bio_devname(bio, b), (long long) bio->bi_iter.bi_sector, (unsigned) bio_sectors(bio), bio->bi_status)) { @@ -375,7 +375,7 @@ static int io_submit_init_bio(struct ext4_io_submit *io, return -ENOMEM; wbc_init_bio(io->io_wbc, bio); bio->bi_iter.bi_sector = bh->b_blocknr * (bh->b_size >> 9); - bio->bi_bdev = bh->b_bdev; + bio_set_dev(bio, bh->b_bdev); bio->bi_end_io = ext4_end_bio; bio->bi_private = ext4_get_io_end(io->io_end); io->io_bio = bio; diff --git a/fs/ext4/readpage.c b/fs/ext4/readpage.c index 40a5497b0f60..04c90643af7a 100644 --- a/fs/ext4/readpage.c +++ b/fs/ext4/readpage.c @@ -254,7 +254,7 @@ int ext4_mpage_readpages(struct address_space *mapping, fscrypt_release_ctx(ctx); goto set_error_page; } - bio->bi_bdev = bdev; + bio_set_dev(bio, bdev); bio->bi_iter.bi_sector = blocks[0] << (blkbits - 9); bio->bi_end_io = mpage_end_io; bio->bi_private = ctx; diff --git a/fs/ext4/super.c b/fs/ext4/super.c index d61a70e2193a..93aece6891f2 100644 --- a/fs/ext4/super.c +++ b/fs/ext4/super.c @@ -2404,6 +2404,7 @@ static void ext4_orphan_cleanup(struct super_block *sb, unsigned int s_flags = sb->s_flags; int ret, nr_orphans = 0, nr_truncates = 0; #ifdef CONFIG_QUOTA + int quota_update = 0; int i; #endif if (!es->s_last_orphan) { @@ -2442,14 +2443,32 @@ static void ext4_orphan_cleanup(struct super_block *sb, #ifdef CONFIG_QUOTA /* Needed for iput() to work correctly and not trash data */ sb->s_flags |= MS_ACTIVE; - /* Turn on quotas so that they are updated correctly */ + + /* + * Turn on quotas which were not enabled for read-only mounts if + * filesystem has quota feature, so that they are updated correctly. + */ + if (ext4_has_feature_quota(sb) && (s_flags & MS_RDONLY)) { + int ret = ext4_enable_quotas(sb); + + if (!ret) + quota_update = 1; + else + ext4_msg(sb, KERN_ERR, + "Cannot turn on quotas: error %d", ret); + } + + /* Turn on journaled quotas used for old sytle */ for (i = 0; i < EXT4_MAXQUOTAS; i++) { if (EXT4_SB(sb)->s_qf_names[i]) { int ret = ext4_quota_on_mount(sb, i); - if (ret < 0) + + if (!ret) + quota_update = 1; + else ext4_msg(sb, KERN_ERR, "Cannot turn on journaled " - "quota: error %d", ret); + "quota: type %d: error %d", i, ret); } } #endif @@ -2510,10 +2529,12 @@ static void ext4_orphan_cleanup(struct super_block *sb, ext4_msg(sb, KERN_INFO, "%d truncate%s cleaned up", PLURAL(nr_truncates)); #ifdef CONFIG_QUOTA - /* Turn quotas off */ - for (i = 0; i < EXT4_MAXQUOTAS; i++) { - if (sb_dqopt(sb)->files[i]) - dquot_quota_off(sb, i); + /* Turn off quotas if they were enabled for orphan cleanup */ + if (quota_update) { + for (i = 0; i < EXT4_MAXQUOTAS; i++) { + if (sb_dqopt(sb)->files[i]) + dquot_quota_off(sb, i); + } } #endif sb->s_flags = s_flags; /* Restore MS_RDONLY status */ @@ -5194,7 +5215,7 @@ static int ext4_statfs_project(struct super_block *sb, dquot = dqget(sb, qid); if (IS_ERR(dquot)) return PTR_ERR(dquot); - spin_lock(&dq_data_lock); + spin_lock(&dquot->dq_dqb_lock); limit = (dquot->dq_dqb.dqb_bsoftlimit ? dquot->dq_dqb.dqb_bsoftlimit : @@ -5217,7 +5238,7 @@ static int ext4_statfs_project(struct super_block *sb, (buf->f_files - dquot->dq_dqb.dqb_curinodes) : 0; } - spin_unlock(&dq_data_lock); + spin_unlock(&dquot->dq_dqb_lock); dqput(dquot); return 0; } @@ -5263,18 +5284,13 @@ static int ext4_statfs(struct dentry *dentry, struct kstatfs *buf) return 0; } -/* Helper function for writing quotas on sync - we need to start transaction - * before quota file is locked for write. Otherwise the are possible deadlocks: - * Process 1 Process 2 - * ext4_create() quota_sync() - * jbd2_journal_start() write_dquot() - * dquot_initialize() down(dqio_mutex) - * down(dqio_mutex) jbd2_journal_start() - * - */ #ifdef CONFIG_QUOTA +/* + * Helper functions so that transaction is started before we acquire dqio_sem + * to keep correct lock ordering of transaction > dqio_sem + */ static inline struct inode *dquot_to_inode(struct dquot *dquot) { return sb_dqopt(dquot->dq_sb)->files[dquot->dq_id.type]; @@ -5409,6 +5425,13 @@ static int ext4_quota_on(struct super_block *sb, int type, int format_id, ext4_msg(sb, KERN_WARNING, "Quota file not on filesystem root. " "Journaled quota will not work"); + sb_dqopt(sb)->flags |= DQUOT_NOLIST_DIRTY; + } else { + /* + * Clear the flag just in case mount options changed since + * last time. + */ + sb_dqopt(sb)->flags &= ~DQUOT_NOLIST_DIRTY; } /* @@ -5505,13 +5528,16 @@ static int ext4_enable_quotas(struct super_block *sb) test_opt(sb, PRJQUOTA), }; - sb_dqopt(sb)->flags |= DQUOT_QUOTA_SYS_FILE; + sb_dqopt(sb)->flags |= DQUOT_QUOTA_SYS_FILE | DQUOT_NOLIST_DIRTY; for (type = 0; type < EXT4_MAXQUOTAS; type++) { if (qf_inums[type]) { err = ext4_quota_enable(sb, type, QFMT_VFS_V1, DQUOT_USAGE_ENABLED | (quota_mopt[type] ? DQUOT_LIMITS_ENABLED : 0)); if (err) { + for (type--; type >= 0; type--) + dquot_quota_off(sb, type); + ext4_warning(sb, "Failed to enable quota tracking " "(type=%d, err=%d). Please run " diff --git a/fs/ext4/xattr.c b/fs/ext4/xattr.c index 82a5af9f6668..3b69330a4250 100644 --- a/fs/ext4/xattr.c +++ b/fs/ext4/xattr.c @@ -354,8 +354,10 @@ free_bhs: return ret; } +#define EXT4_XATTR_INODE_GET_PARENT(inode) ((__u32)(inode)->i_mtime.tv_sec) + static int ext4_xattr_inode_iget(struct inode *parent, unsigned long ea_ino, - struct inode **ea_inode) + u32 ea_inode_hash, struct inode **ea_inode) { struct inode *inode; int err; @@ -385,6 +387,24 @@ static int ext4_xattr_inode_iget(struct inode *parent, unsigned long ea_ino, goto error; } + ext4_xattr_inode_set_class(inode); + + /* + * Check whether this is an old Lustre-style xattr inode. Lustre + * implementation does not have hash validation, rather it has a + * backpointer from ea_inode to the parent inode. + */ + if (ea_inode_hash != ext4_xattr_inode_get_hash(inode) && + EXT4_XATTR_INODE_GET_PARENT(inode) == parent->i_ino && + inode->i_generation == parent->i_generation) { + ext4_set_inode_state(inode, EXT4_STATE_LUSTRE_EA_INODE); + ext4_xattr_inode_set_ref(inode, 1); + } else { + inode_lock(inode); + inode->i_flags |= S_NOQUOTA; + inode_unlock(inode); + } + *ea_inode = inode; return 0; error: @@ -417,8 +437,6 @@ ext4_xattr_inode_verify_hashes(struct inode *ea_inode, return 0; } -#define EXT4_XATTR_INODE_GET_PARENT(inode) ((__u32)(inode)->i_mtime.tv_sec) - /* * Read xattr value from the EA inode. */ @@ -431,7 +449,7 @@ ext4_xattr_inode_get(struct inode *inode, struct ext4_xattr_entry *entry, int err; err = ext4_xattr_inode_iget(inode, le32_to_cpu(entry->e_value_inum), - &ea_inode); + le32_to_cpu(entry->e_hash), &ea_inode); if (err) { ea_inode = NULL; goto out; @@ -449,29 +467,20 @@ ext4_xattr_inode_get(struct inode *inode, struct ext4_xattr_entry *entry, if (err) goto out; - err = ext4_xattr_inode_verify_hashes(ea_inode, entry, buffer, size); - /* - * Compatibility check for old Lustre ea_inode implementation. Old - * version does not have hash validation, but it has a backpointer - * from ea_inode to the parent inode. - */ - if (err == -EFSCORRUPTED) { - if (EXT4_XATTR_INODE_GET_PARENT(ea_inode) != inode->i_ino || - ea_inode->i_generation != inode->i_generation) { + if (!ext4_test_inode_state(ea_inode, EXT4_STATE_LUSTRE_EA_INODE)) { + err = ext4_xattr_inode_verify_hashes(ea_inode, entry, buffer, + size); + if (err) { ext4_warning_inode(ea_inode, "EA inode hash validation failed"); goto out; } - /* Do not add ea_inode to the cache. */ - ea_inode_cache = NULL; - err = 0; - } else if (err) - goto out; - if (ea_inode_cache) - mb_cache_entry_create(ea_inode_cache, GFP_NOFS, - ext4_xattr_inode_get_hash(ea_inode), - ea_inode->i_ino, true /* reusable */); + if (ea_inode_cache) + mb_cache_entry_create(ea_inode_cache, GFP_NOFS, + ext4_xattr_inode_get_hash(ea_inode), + ea_inode->i_ino, true /* reusable */); + } out: iput(ea_inode); return err; @@ -838,10 +847,15 @@ static int ext4_xattr_inode_alloc_quota(struct inode *inode, size_t len) return err; } -static void ext4_xattr_inode_free_quota(struct inode *inode, size_t len) +static void ext4_xattr_inode_free_quota(struct inode *parent, + struct inode *ea_inode, + size_t len) { - dquot_free_space_nodirty(inode, round_up_cluster(inode, len)); - dquot_free_inode(inode); + if (ea_inode && + ext4_test_inode_state(ea_inode, EXT4_STATE_LUSTRE_EA_INODE)) + return; + dquot_free_space_nodirty(parent, round_up_cluster(parent, len)); + dquot_free_inode(parent); } int __ext4_xattr_set_credits(struct super_block *sb, struct inode *inode, @@ -1071,7 +1085,9 @@ static int ext4_xattr_inode_inc_ref_all(handle_t *handle, struct inode *parent, if (!entry->e_value_inum) continue; ea_ino = le32_to_cpu(entry->e_value_inum); - err = ext4_xattr_inode_iget(parent, ea_ino, &ea_inode); + err = ext4_xattr_inode_iget(parent, ea_ino, + le32_to_cpu(entry->e_hash), + &ea_inode); if (err) goto cleanup; err = ext4_xattr_inode_inc_ref(handle, ea_inode); @@ -1093,7 +1109,9 @@ cleanup: if (!entry->e_value_inum) continue; ea_ino = le32_to_cpu(entry->e_value_inum); - err = ext4_xattr_inode_iget(parent, ea_ino, &ea_inode); + err = ext4_xattr_inode_iget(parent, ea_ino, + le32_to_cpu(entry->e_hash), + &ea_inode); if (err) { ext4_warning(parent->i_sb, "cleanup ea_ino %u iget error %d", ea_ino, @@ -1131,7 +1149,9 @@ ext4_xattr_inode_dec_ref_all(handle_t *handle, struct inode *parent, if (!entry->e_value_inum) continue; ea_ino = le32_to_cpu(entry->e_value_inum); - err = ext4_xattr_inode_iget(parent, ea_ino, &ea_inode); + err = ext4_xattr_inode_iget(parent, ea_ino, + le32_to_cpu(entry->e_hash), + &ea_inode); if (err) continue; @@ -1159,7 +1179,7 @@ ext4_xattr_inode_dec_ref_all(handle_t *handle, struct inode *parent, } if (!skip_quota) - ext4_xattr_inode_free_quota(parent, + ext4_xattr_inode_free_quota(parent, ea_inode, le32_to_cpu(entry->e_value_size)); /* @@ -1543,7 +1563,7 @@ static int ext4_xattr_set_entry(struct ext4_xattr_info *i, /* Clear padding bytes. */ memset(val + i->value_len, 0, new_size - i->value_len); } - return 0; + goto update_hash; } /* Compute min_offs and last. */ @@ -1591,6 +1611,7 @@ static int ext4_xattr_set_entry(struct ext4_xattr_info *i, if (!s->not_found && here->e_value_inum) { ret = ext4_xattr_inode_iget(inode, le32_to_cpu(here->e_value_inum), + le32_to_cpu(here->e_hash), &old_ea_inode); if (ret) { old_ea_inode = NULL; @@ -1609,7 +1630,7 @@ static int ext4_xattr_set_entry(struct ext4_xattr_info *i, &new_ea_inode); if (ret) { new_ea_inode = NULL; - ext4_xattr_inode_free_quota(inode, i->value_len); + ext4_xattr_inode_free_quota(inode, NULL, i->value_len); goto out; } } @@ -1628,13 +1649,13 @@ static int ext4_xattr_set_entry(struct ext4_xattr_info *i, ext4_warning_inode(new_ea_inode, "dec ref new_ea_inode err=%d", err); - ext4_xattr_inode_free_quota(inode, + ext4_xattr_inode_free_quota(inode, new_ea_inode, i->value_len); } goto out; } - ext4_xattr_inode_free_quota(inode, + ext4_xattr_inode_free_quota(inode, old_ea_inode, le32_to_cpu(here->e_value_size)); } @@ -1707,6 +1728,7 @@ static int ext4_xattr_set_entry(struct ext4_xattr_info *i, here->e_value_size = cpu_to_le32(i->value_len); } +update_hash: if (i->value) { __le32 hash = 0; @@ -1725,7 +1747,8 @@ static int ext4_xattr_set_entry(struct ext4_xattr_info *i, here->e_name_len, &crc32c_hash, 1); } else if (is_block) { - __le32 *value = s->base + min_offs - new_size; + __le32 *value = s->base + le16_to_cpu( + here->e_value_offs); hash = ext4_xattr_hash_entry(here->e_name, here->e_name_len, value, @@ -1803,8 +1826,10 @@ ext4_xattr_block_set(handle_t *handle, struct inode *inode, struct mb_cache_entry *ce = NULL; int error = 0; struct mb_cache *ea_block_cache = EA_BLOCK_CACHE(inode); - struct inode *ea_inode = NULL; - size_t old_ea_inode_size = 0; + struct inode *ea_inode = NULL, *tmp_inode; + size_t old_ea_inode_quota = 0; + unsigned int ea_ino; + #define header(x) ((struct ext4_xattr_header *)(x)) @@ -1863,12 +1888,24 @@ ext4_xattr_block_set(handle_t *handle, struct inode *inode, * like it has an empty value. */ if (!s->not_found && s->here->e_value_inum) { - /* - * Defer quota free call for previous inode - * until success is guaranteed. - */ - old_ea_inode_size = le32_to_cpu( + ea_ino = le32_to_cpu(s->here->e_value_inum); + error = ext4_xattr_inode_iget(inode, ea_ino, + le32_to_cpu(s->here->e_hash), + &tmp_inode); + if (error) + goto cleanup; + + if (!ext4_test_inode_state(tmp_inode, + EXT4_STATE_LUSTRE_EA_INODE)) { + /* + * Defer quota free call for previous + * inode until success is guaranteed. + */ + old_ea_inode_quota = le32_to_cpu( s->here->e_value_size); + } + iput(tmp_inode); + s->here->e_value_inum = 0; s->here->e_value_size = 0; } @@ -1895,8 +1932,6 @@ ext4_xattr_block_set(handle_t *handle, struct inode *inode, goto cleanup; if (i->value && s->here->e_value_inum) { - unsigned int ea_ino; - /* * A ref count on ea_inode has been taken as part of the call to * ext4_xattr_set_entry() above. We would like to drop this @@ -1904,7 +1939,9 @@ ext4_xattr_block_set(handle_t *handle, struct inode *inode, * initialized and has its own ref count on the ea_inode. */ ea_ino = le32_to_cpu(s->here->e_value_inum); - error = ext4_xattr_inode_iget(inode, ea_ino, &ea_inode); + error = ext4_xattr_inode_iget(inode, ea_ino, + le32_to_cpu(s->here->e_hash), + &ea_inode); if (error) { ea_inode = NULL; goto cleanup; @@ -2054,8 +2091,8 @@ getblk_failed: } } - if (old_ea_inode_size) - ext4_xattr_inode_free_quota(inode, old_ea_inode_size); + if (old_ea_inode_quota) + ext4_xattr_inode_free_quota(inode, NULL, old_ea_inode_quota); /* Update the inode. */ EXT4_I(inode)->i_file_acl = new_bh ? new_bh->b_blocknr : 0; @@ -2082,7 +2119,7 @@ cleanup: /* If there was an error, revert the quota charge. */ if (error) - ext4_xattr_inode_free_quota(inode, + ext4_xattr_inode_free_quota(inode, ea_inode, i_size_read(ea_inode)); iput(ea_inode); } @@ -2798,6 +2835,7 @@ int ext4_xattr_delete_inode(handle_t *handle, struct inode *inode, struct ext4_xattr_ibody_header *header; struct ext4_iloc iloc = { .bh = NULL }; struct ext4_xattr_entry *entry; + struct inode *ea_inode; int error; error = ext4_xattr_ensure_credits(handle, inode, extra_credits, @@ -2852,10 +2890,19 @@ int ext4_xattr_delete_inode(handle_t *handle, struct inode *inode, if (ext4_has_feature_ea_inode(inode->i_sb)) { for (entry = BFIRST(bh); !IS_LAST_ENTRY(entry); - entry = EXT4_XATTR_NEXT(entry)) - if (entry->e_value_inum) - ext4_xattr_inode_free_quota(inode, + entry = EXT4_XATTR_NEXT(entry)) { + if (!entry->e_value_inum) + continue; + error = ext4_xattr_inode_iget(inode, + le32_to_cpu(entry->e_value_inum), + le32_to_cpu(entry->e_hash), + &ea_inode); + if (error) + continue; + ext4_xattr_inode_free_quota(inode, ea_inode, le32_to_cpu(entry->e_value_size)); + iput(ea_inode); + } } diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c index 87c1f4150c64..fb96bb71da00 100644 --- a/fs/f2fs/data.c +++ b/fs/f2fs/data.c @@ -142,7 +142,7 @@ struct block_device *f2fs_target_device(struct f2fs_sb_info *sbi, } } if (bio) { - bio->bi_bdev = bdev; + bio_set_dev(bio, bdev); bio->bi_iter.bi_sector = SECTOR_FROM_BLOCK(blk_addr); } return bdev; @@ -161,7 +161,8 @@ int f2fs_target_device_index(struct f2fs_sb_info *sbi, block_t blkaddr) static bool __same_bdev(struct f2fs_sb_info *sbi, block_t blk_addr, struct bio *bio) { - return f2fs_target_device(sbi, blk_addr, NULL) == bio->bi_bdev; + struct block_device *b = f2fs_target_device(sbi, blk_addr, NULL); + return bio->bi_disk == b->bd_disk && bio->bi_partno == b->bd_partno; } /* @@ -2252,7 +2253,10 @@ int f2fs_migrate_page(struct address_space *mapping, SetPagePrivate(newpage); set_page_private(newpage, page_private(page)); - migrate_page_copy(newpage, page); + if (mode != MIGRATE_SYNC_NO_COPY) + migrate_page_copy(newpage, page); + else + migrate_page_states(newpage, page); return MIGRATEPAGE_SUCCESS; } diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c index 2706130c261b..843a0d99f7ea 100644 --- a/fs/f2fs/file.c +++ b/fs/f2fs/file.c @@ -206,7 +206,7 @@ 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(inode, FI_NEED_IPU); - ret = filemap_write_and_wait_range(inode->i_mapping, start, end); + ret = file_write_and_wait_range(file, start, end); clear_inode_flag(inode, FI_NEED_IPU); if (ret) { diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c index f964b68718c1..6f8fc4a6e701 100644 --- a/fs/f2fs/segment.c +++ b/fs/f2fs/segment.c @@ -447,7 +447,7 @@ static int __submit_flush_wait(struct f2fs_sb_info *sbi, int ret; bio->bi_opf = REQ_OP_WRITE | REQ_SYNC | REQ_PREFLUSH; - bio->bi_bdev = bdev; + bio_set_dev(bio, bdev); ret = submit_bio_wait(bio); bio_put(bio); diff --git a/fs/fat/namei_vfat.c b/fs/fat/namei_vfat.c index 6a7152d0c250..02c066663a3a 100644 --- a/fs/fat/namei_vfat.c +++ b/fs/fat/namei_vfat.c @@ -19,6 +19,8 @@ #include <linux/ctype.h> #include <linux/slab.h> #include <linux/namei.h> +#include <linux/kernel.h> + #include "fat.h" static inline unsigned long vfat_d_version(struct dentry *dentry) @@ -510,10 +512,8 @@ xlate_to_uni(const unsigned char *name, int len, unsigned char *outname, struct nls_table *nls) { const unsigned char *ip; - unsigned char nc; unsigned char *op; - unsigned int ec; - int i, k, fill; + int i, fill; int charlen; if (utf8) { @@ -530,33 +530,22 @@ xlate_to_uni(const unsigned char *name, int len, unsigned char *outname, i < len && *outlen < FAT_LFN_LEN; *outlen += 1) { if (escape && (*ip == ':')) { + u8 uc[2]; + if (i > len - 5) return -EINVAL; - ec = 0; - for (k = 1; k < 5; k++) { - nc = ip[k]; - ec <<= 4; - if (nc >= '0' && nc <= '9') { - ec |= nc - '0'; - continue; - } - if (nc >= 'a' && nc <= 'f') { - ec |= nc - ('a' - 10); - continue; - } - if (nc >= 'A' && nc <= 'F') { - ec |= nc - ('A' - 10); - continue; - } + + if (hex2bin(uc, ip + 1, 2) < 0) return -EINVAL; - } - *op++ = ec & 0xFF; - *op++ = ec >> 8; + + *(wchar_t *)op = uc[0] << 8 | uc[1]; + + op += 2; ip += 5; i += 5; } else { charlen = nls->char2uni(ip, len - i, - (wchar_t *)op); + (wchar_t *)op); if (charlen < 0) return -EINVAL; ip += charlen; diff --git a/fs/fscache/page.c b/fs/fscache/page.c index c8c4f79c7ce1..0ad3fd3ad0b4 100644 --- a/fs/fscache/page.c +++ b/fs/fscache/page.c @@ -1178,11 +1178,10 @@ void __fscache_uncache_all_inode_pages(struct fscache_cookie *cookie, pagevec_init(&pvec, 0); next = 0; do { - if (!pagevec_lookup(&pvec, mapping, next, PAGEVEC_SIZE)) + if (!pagevec_lookup(&pvec, mapping, &next)) break; for (i = 0; i < pagevec_count(&pvec); i++) { struct page *page = pvec.pages[i]; - next = page->index; if (PageFsCache(page)) { __fscache_wait_on_page_write(cookie, page); __fscache_uncache_page(cookie, page); @@ -1190,7 +1189,7 @@ void __fscache_uncache_all_inode_pages(struct fscache_cookie *cookie, } pagevec_release(&pvec); cond_resched(); - } while (++next); + } while (next); _leave(""); } diff --git a/fs/fuse/file.c b/fs/fuse/file.c index ab60051be6e5..d66789804287 100644 --- a/fs/fuse/file.c +++ b/fs/fuse/file.c @@ -457,7 +457,7 @@ int fuse_fsync_common(struct file *file, loff_t start, loff_t end, * wait for all outstanding writes, before sending the FSYNC * request. */ - err = filemap_write_and_wait_range(inode->i_mapping, start, end); + err = file_write_and_wait_range(file, start, end); if (err) goto out; @@ -465,10 +465,10 @@ int fuse_fsync_common(struct file *file, loff_t start, loff_t end, /* * Due to implementation of fuse writeback - * filemap_write_and_wait_range() does not catch errors. + * file_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); + err = file_check_and_advance_wb_err(file); if (err) goto out; @@ -2102,11 +2102,11 @@ static int convert_fuse_file_lock(struct fuse_conn *fc, fl->fl_end = ffl->end; /* - * Convert pid into the caller's pid namespace. If the pid - * does not map into the namespace fl_pid will get set to 0. + * Convert pid into init's pid namespace. The locks API will + * translate it into the caller's pid namespace. */ rcu_read_lock(); - fl->fl_pid = pid_vnr(find_pid_ns(ffl->pid, fc->pid_ns)); + fl->fl_pid = pid_nr_ns(find_pid_ns(ffl->pid, fc->pid_ns), &init_pid_ns); rcu_read_unlock(); break; diff --git a/fs/gfs2/acl.c b/fs/gfs2/acl.c index 2524807ee070..9d5eecb123de 100644 --- a/fs/gfs2/acl.c +++ b/fs/gfs2/acl.c @@ -86,19 +86,6 @@ int __gfs2_set_acl(struct inode *inode, struct posix_acl *acl, int type) char *data; const char *name = gfs2_acl_name(type); - if (acl && acl->a_count > GFS2_ACL_MAX_ENTRIES(GFS2_SB(inode))) - return -E2BIG; - - if (type == ACL_TYPE_ACCESS) { - umode_t mode = inode->i_mode; - - error = posix_acl_update_mode(inode, &inode->i_mode, &acl); - if (error) - return error; - if (mode != inode->i_mode) - mark_inode_dirty(inode); - } - if (acl) { len = posix_acl_to_xattr(&init_user_ns, acl, NULL, 0); if (len == 0) @@ -129,6 +116,10 @@ int gfs2_set_acl(struct inode *inode, struct posix_acl *acl, int type) struct gfs2_holder gh; bool need_unlock = false; int ret; + umode_t mode; + + if (acl && acl->a_count > GFS2_ACL_MAX_ENTRIES(GFS2_SB(inode))) + return -E2BIG; ret = gfs2_rsqa_alloc(ip); if (ret) @@ -140,7 +131,20 @@ int gfs2_set_acl(struct inode *inode, struct posix_acl *acl, int type) return ret; need_unlock = true; } + + mode = inode->i_mode; + if (type == ACL_TYPE_ACCESS && acl) { + ret = posix_acl_update_mode(inode, &mode, &acl); + if (ret) + goto unlock; + } + ret = __gfs2_set_acl(inode, acl, type); + if (!ret && mode != inode->i_mode) { + inode->i_mode = mode; + mark_inode_dirty(inode); + } +unlock: if (need_unlock) gfs2_glock_dq_uninit(&gh); return ret; diff --git a/fs/gfs2/aops.c b/fs/gfs2/aops.c index ed7a2e252ad8..68ed06962537 100644 --- a/fs/gfs2/aops.c +++ b/fs/gfs2/aops.c @@ -234,7 +234,19 @@ out: static int gfs2_writepages(struct address_space *mapping, struct writeback_control *wbc) { - return mpage_writepages(mapping, wbc, gfs2_get_block_noalloc); + struct gfs2_sbd *sdp = gfs2_mapping2sbd(mapping); + int ret = mpage_writepages(mapping, wbc, gfs2_get_block_noalloc); + + /* + * Even if we didn't write any pages here, we might still be holding + * dirty pages in the ail. We forcibly flush the ail because we don't + * want balance_dirty_pages() to loop indefinitely trying to write out + * pages held in the ail that it can't find. + */ + if (ret == 0) + set_bit(SDF_FORCE_AIL_FLUSH, &sdp->sd_flags); + + return ret; } /** diff --git a/fs/gfs2/bmap.c b/fs/gfs2/bmap.c index 9fa3aef9a5b3..3dd0cceefa43 100644 --- a/fs/gfs2/bmap.c +++ b/fs/gfs2/bmap.c @@ -291,8 +291,9 @@ static void gfs2_metapath_ra(struct gfs2_glock *gl, if (trylock_buffer(rabh)) { if (!buffer_uptodate(rabh)) { rabh->b_end_io = end_buffer_read_sync; - submit_bh(REQ_OP_READ, REQ_RAHEAD | REQ_META, - rabh); + submit_bh(REQ_OP_READ, + REQ_RAHEAD | REQ_META | REQ_PRIO, + rabh); continue; } unlock_buffer(rabh); @@ -1103,8 +1104,15 @@ static bool find_nonnull_ptr(struct gfs2_sbd *sdp, struct metapath *mp, while (true) { ptr = metapointer(h, mp); - if (*ptr) /* if we have a non-null pointer */ + if (*ptr) { /* if we have a non-null pointer */ + /* Now zero the metapath after the current height. */ + h++; + if (h < GFS2_MAX_META_HEIGHT) + memset(&mp->mp_list[h], 0, + (GFS2_MAX_META_HEIGHT - h) * + sizeof(mp->mp_list[0])); return true; + } if (mp->mp_list[h] < ptrs) mp->mp_list[h]++; @@ -1120,6 +1128,13 @@ enum dealloc_states { DEALLOC_DONE = 3, /* process complete */ }; +static bool mp_eq_to_hgt(struct metapath *mp, __u16 *nbof, unsigned int h) +{ + if (memcmp(mp->mp_list, nbof, h * sizeof(mp->mp_list[0]))) + return false; + return true; +} + /** * trunc_dealloc - truncate a file down to a desired size * @ip: inode to truncate @@ -1197,8 +1212,7 @@ static int trunc_dealloc(struct gfs2_inode *ip, u64 newsize) /* If we're truncating to a non-zero size and the mp is at the beginning of file for the strip height, we need to preserve the first metadata pointer. */ - preserve1 = (newsize && - (mp.mp_list[mp_h] == nbof[mp_h])); + preserve1 = (newsize && mp_eq_to_hgt(&mp, nbof, mp_h)); bh = mp.mp_bh[mp_h]; gfs2_assert_withdraw(sdp, bh); if (gfs2_assert_withdraw(sdp, diff --git a/fs/gfs2/dir.c b/fs/gfs2/dir.c index 5ee2e2f8576c..06a0d1947c77 100644 --- a/fs/gfs2/dir.c +++ b/fs/gfs2/dir.c @@ -1513,7 +1513,9 @@ static void gfs2_dir_readahead(struct inode *inode, unsigned hsize, u32 index, continue; } bh->b_end_io = end_buffer_read_sync; - submit_bh(REQ_OP_READ, REQ_RAHEAD | REQ_META, bh); + submit_bh(REQ_OP_READ, + REQ_RAHEAD | REQ_META | REQ_PRIO, + bh); continue; } brelse(bh); diff --git a/fs/gfs2/file.c b/fs/gfs2/file.c index c2062a108d19..33a0cb5701a3 100644 --- a/fs/gfs2/file.c +++ b/fs/gfs2/file.c @@ -668,12 +668,14 @@ static int gfs2_fsync(struct file *file, loff_t start, loff_t end, if (ret) return ret; if (gfs2_is_jdata(ip)) - filemap_write_and_wait(mapping); + ret = file_write_and_wait(file); + if (ret) + return ret; gfs2_ail_flush(ip->i_gl, 1); } if (mapping->nrpages) - ret = filemap_fdatawait_range(mapping, start, end); + ret = file_fdatawait_range(file, start, end); return ret ? ret : ret1; } @@ -1030,8 +1032,7 @@ static int do_flock(struct file *file, int cmd, struct file_lock *fl) mutex_lock(&fp->f_fl_mutex); - gl = fl_gh->gh_gl; - if (gl) { + if (gfs2_holder_initialized(fl_gh)) { if (fl_gh->gh_state == state) goto out; locks_lock_file_wait(file, diff --git a/fs/gfs2/glock.c b/fs/gfs2/glock.c index c38ab6c81898..98e845b7841b 100644 --- a/fs/gfs2/glock.c +++ b/fs/gfs2/glock.c @@ -15,6 +15,7 @@ #include <linux/buffer_head.h> #include <linux/delay.h> #include <linux/sort.h> +#include <linux/hash.h> #include <linux/jhash.h> #include <linux/kallsyms.h> #include <linux/gfs2_ondisk.h> @@ -71,7 +72,7 @@ static DEFINE_SPINLOCK(lru_lock); #define GFS2_GL_HASH_SHIFT 15 #define GFS2_GL_HASH_SIZE BIT(GFS2_GL_HASH_SHIFT) -static struct rhashtable_params ht_parms = { +static const struct rhashtable_params ht_parms = { .nelem_hint = GFS2_GL_HASH_SIZE * 3 / 4, .key_len = offsetofend(struct lm_lockname, ln_type), .key_offset = offsetof(struct gfs2_glock, gl_name), @@ -80,6 +81,49 @@ static struct rhashtable_params ht_parms = { static struct rhashtable gl_hash_table; +#define GLOCK_WAIT_TABLE_BITS 12 +#define GLOCK_WAIT_TABLE_SIZE (1 << GLOCK_WAIT_TABLE_BITS) +static wait_queue_head_t glock_wait_table[GLOCK_WAIT_TABLE_SIZE] __cacheline_aligned; + +struct wait_glock_queue { + struct lm_lockname *name; + wait_queue_entry_t wait; +}; + +static int glock_wake_function(wait_queue_entry_t *wait, unsigned int mode, + int sync, void *key) +{ + struct wait_glock_queue *wait_glock = + container_of(wait, struct wait_glock_queue, wait); + struct lm_lockname *wait_name = wait_glock->name; + struct lm_lockname *wake_name = key; + + if (wake_name->ln_sbd != wait_name->ln_sbd || + wake_name->ln_number != wait_name->ln_number || + wake_name->ln_type != wait_name->ln_type) + return 0; + return autoremove_wake_function(wait, mode, sync, key); +} + +static wait_queue_head_t *glock_waitqueue(struct lm_lockname *name) +{ + u32 hash = jhash2((u32 *)name, sizeof(*name) / 4, 0); + + return glock_wait_table + hash_32(hash, GLOCK_WAIT_TABLE_BITS); +} + +/** + * wake_up_glock - Wake up waiters on a glock + * @gl: the glock + */ +static void wake_up_glock(struct gfs2_glock *gl) +{ + wait_queue_head_t *wq = glock_waitqueue(&gl->gl_name); + + if (waitqueue_active(wq)) + __wake_up(wq, TASK_NORMAL, 1, &gl->gl_name); +} + static void gfs2_glock_dealloc(struct rcu_head *rcu) { struct gfs2_glock *gl = container_of(rcu, struct gfs2_glock, gl_rcu); @@ -96,6 +140,9 @@ void gfs2_glock_free(struct gfs2_glock *gl) { struct gfs2_sbd *sdp = gl->gl_name.ln_sbd; + rhashtable_remove_fast(&gl_hash_table, &gl->gl_node, ht_parms); + smp_mb(); + wake_up_glock(gl); call_rcu(&gl->gl_rcu, gfs2_glock_dealloc); if (atomic_dec_and_test(&sdp->sd_glock_disposal)) wake_up(&sdp->sd_glock_wait); @@ -107,7 +154,7 @@ void gfs2_glock_free(struct gfs2_glock *gl) * */ -static void gfs2_glock_hold(struct gfs2_glock *gl) +void gfs2_glock_hold(struct gfs2_glock *gl) { GLOCK_BUG_ON(gl, __lockref_is_dead(&gl->gl_lockref)); lockref_get(&gl->gl_lockref); @@ -150,6 +197,9 @@ void gfs2_glock_add_to_lru(struct gfs2_glock *gl) static void gfs2_glock_remove_from_lru(struct gfs2_glock *gl) { + if (!(gl->gl_ops->go_flags & GLOF_LRU)) + return; + spin_lock(&lru_lock); if (!list_empty(&gl->gl_lru)) { list_del_init(&gl->gl_lru); @@ -191,13 +241,20 @@ static void __gfs2_glock_put(struct gfs2_glock *gl) gfs2_glock_remove_from_lru(gl); spin_unlock(&gl->gl_lockref.lock); - rhashtable_remove_fast(&gl_hash_table, &gl->gl_node, ht_parms); GLOCK_BUG_ON(gl, !list_empty(&gl->gl_holders)); GLOCK_BUG_ON(gl, mapping && mapping->nrpages); trace_gfs2_glock_put(gl); sdp->sd_lockstruct.ls_ops->lm_put_lock(gl); } +/* + * Cause the glock to be put in work queue context. + */ +void gfs2_glock_queue_put(struct gfs2_glock *gl) +{ + gfs2_glock_queue_work(gl, 0); +} + /** * gfs2_glock_put() - Decrement reference count on glock * @gl: The glock to put @@ -676,6 +733,40 @@ static void glock_work_func(struct work_struct *work) spin_unlock(&gl->gl_lockref.lock); } +static struct gfs2_glock *find_insert_glock(struct lm_lockname *name, + struct gfs2_glock *new) +{ + struct wait_glock_queue wait; + wait_queue_head_t *wq = glock_waitqueue(name); + struct gfs2_glock *gl; + + wait.name = name; + init_wait(&wait.wait); + wait.wait.func = glock_wake_function; + +again: + prepare_to_wait(wq, &wait.wait, TASK_UNINTERRUPTIBLE); + rcu_read_lock(); + if (new) { + gl = rhashtable_lookup_get_insert_fast(&gl_hash_table, + &new->gl_node, ht_parms); + if (IS_ERR(gl)) + goto out; + } else { + gl = rhashtable_lookup_fast(&gl_hash_table, + name, ht_parms); + } + if (gl && !lockref_get_not_dead(&gl->gl_lockref)) { + rcu_read_unlock(); + schedule(); + goto again; + } +out: + rcu_read_unlock(); + finish_wait(wq, &wait.wait); + return gl; +} + /** * gfs2_glock_get() - Get a glock, or create one if one doesn't exist * @sdp: The GFS2 superblock @@ -702,15 +793,11 @@ int gfs2_glock_get(struct gfs2_sbd *sdp, u64 number, struct kmem_cache *cachep; int ret = 0; - rcu_read_lock(); - gl = rhashtable_lookup_fast(&gl_hash_table, &name, ht_parms); - if (gl && !lockref_get_not_dead(&gl->gl_lockref)) - gl = NULL; - rcu_read_unlock(); - - *glp = gl; - if (gl) + gl = find_insert_glock(&name, NULL); + if (gl) { + *glp = gl; return 0; + } if (!create) return -ENOENT; @@ -764,10 +851,7 @@ int gfs2_glock_get(struct gfs2_sbd *sdp, u64 number, mapping->writeback_index = 0; } -again: - rcu_read_lock(); - tmp = rhashtable_lookup_get_insert_fast(&gl_hash_table, &gl->gl_node, - ht_parms); + tmp = find_insert_glock(&name, gl); if (!tmp) { *glp = gl; goto out; @@ -776,13 +860,7 @@ again: ret = PTR_ERR(tmp); goto out_free; } - if (lockref_get_not_dead(&tmp->gl_lockref)) { - *glp = tmp; - goto out_free; - } - rcu_read_unlock(); - cond_resched(); - goto again; + *glp = tmp; out_free: kfree(gl->gl_lksb.sb_lvbptr); @@ -790,7 +868,6 @@ out_free: atomic_dec(&sdp->sd_glock_disposal); out: - rcu_read_unlock(); return ret; } @@ -1473,14 +1550,15 @@ static void glock_hash_walk(glock_examiner examiner, const struct gfs2_sbd *sdp) do { gl = ERR_PTR(rhashtable_walk_start(&iter)); - if (gl) - continue; + if (IS_ERR(gl)) + goto walk_stop; while ((gl = rhashtable_walk_next(&iter)) && !IS_ERR(gl)) - if ((gl->gl_name.ln_sbd == sdp) && + if (gl->gl_name.ln_sbd == sdp && lockref_get_not_dead(&gl->gl_lockref)) examiner(gl); +walk_stop: rhashtable_walk_stop(&iter); } while (cond_resched(), gl == ERR_PTR(-EAGAIN)); @@ -1803,7 +1881,7 @@ static int gfs2_sbstats_seq_show(struct seq_file *seq, void *iter_ptr) int __init gfs2_glock_init(void) { - int ret; + int i, ret; ret = rhashtable_init(&gl_hash_table, &ht_parms); if (ret < 0) @@ -1832,6 +1910,9 @@ int __init gfs2_glock_init(void) return ret; } + for (i = 0; i < GLOCK_WAIT_TABLE_SIZE; i++) + init_waitqueue_head(glock_wait_table + i); + return 0; } @@ -1860,6 +1941,7 @@ static void gfs2_glock_iter_next(struct gfs2_glock_iter *gi) } static void *gfs2_glock_seq_start(struct seq_file *seq, loff_t *pos) + __acquires(RCU) { struct gfs2_glock_iter *gi = seq->private; loff_t n = *pos; @@ -1892,6 +1974,7 @@ static void *gfs2_glock_seq_next(struct seq_file *seq, void *iter_ptr, } static void gfs2_glock_seq_stop(struct seq_file *seq, void *iter_ptr) + __releases(RCU) { struct gfs2_glock_iter *gi = seq->private; diff --git a/fs/gfs2/glock.h b/fs/gfs2/glock.h index 9ad4a6ac6c84..5e12220cc0c2 100644 --- a/fs/gfs2/glock.h +++ b/fs/gfs2/glock.h @@ -13,6 +13,7 @@ #include <linux/sched.h> #include <linux/parser.h> #include "incore.h" +#include "util.h" /* Options for hostdata parser */ @@ -181,7 +182,9 @@ static inline struct address_space *gfs2_glock2aspace(struct gfs2_glock *gl) extern int gfs2_glock_get(struct gfs2_sbd *sdp, u64 number, const struct gfs2_glock_operations *glops, int create, struct gfs2_glock **glp); +extern void gfs2_glock_hold(struct gfs2_glock *gl); extern void gfs2_glock_put(struct gfs2_glock *gl); +extern void gfs2_glock_queue_put(struct gfs2_glock *gl); extern void gfs2_holder_init(struct gfs2_glock *gl, unsigned int state, u16 flags, struct gfs2_holder *gh); extern void gfs2_holder_reinit(unsigned int state, u16 flags, @@ -257,11 +260,44 @@ static inline bool gfs2_holder_initialized(struct gfs2_holder *gh) return gh->gh_gl; } +/** + * glock_set_object - set the gl_object field of a glock + * @gl: the glock + * @object: the object + */ static inline void glock_set_object(struct gfs2_glock *gl, void *object) { spin_lock(&gl->gl_lockref.lock); + if (gfs2_assert_warn(gl->gl_name.ln_sbd, gl->gl_object == NULL)) + gfs2_dump_glock(NULL, gl); gl->gl_object = object; spin_unlock(&gl->gl_lockref.lock); } +/** + * glock_clear_object - clear the gl_object field of a glock + * @gl: the glock + * @object: the object + * + * I'd love to similarly add this: + * else if (gfs2_assert_warn(gl->gl_sbd, gl->gl_object == object)) + * gfs2_dump_glock(NULL, gl); + * Unfortunately, that's not possible because as soon as gfs2_delete_inode + * frees the block in the rgrp, another process can reassign it for an I_NEW + * inode in gfs2_create_inode because that calls new_inode, not gfs2_iget. + * That means gfs2_delete_inode may subsequently try to call this function + * for a glock that's already pointing to a brand new inode. If we clear the + * new inode's gl_object, we'll introduce metadata corruption. Function + * gfs2_delete_inode calls clear_inode which calls gfs2_clear_inode which also + * tries to clear gl_object, so it's more than just gfs2_delete_inode. + * + */ +static inline void glock_clear_object(struct gfs2_glock *gl, void *object) +{ + spin_lock(&gl->gl_lockref.lock); + if (gl->gl_object == object) + gl->gl_object = NULL; + spin_unlock(&gl->gl_lockref.lock); +} + #endif /* __GLOCK_DOT_H__ */ diff --git a/fs/gfs2/glops.c b/fs/gfs2/glops.c index 5e69636d4dd3..dac6559e2195 100644 --- a/fs/gfs2/glops.c +++ b/fs/gfs2/glops.c @@ -329,32 +329,6 @@ static int inode_go_demote_ok(const struct gfs2_glock *gl) return 1; } -/** - * gfs2_set_nlink - Set the inode's link count based on on-disk info - * @inode: The inode in question - * @nlink: The link count - * - * If the link count has hit zero, it must never be raised, whatever the - * on-disk inode might say. When new struct inodes are created the link - * count is set to 1, so that we can safely use this test even when reading - * in on disk information for the first time. - */ - -static void gfs2_set_nlink(struct inode *inode, u32 nlink) -{ - /* - * We will need to review setting the nlink count here in the - * light of the forthcoming ro bind mount work. This is a reminder - * to do that. - */ - if ((inode->i_nlink != nlink) && (inode->i_nlink != 0)) { - if (nlink == 0) - clear_nlink(inode); - else - set_nlink(inode, nlink); - } -} - static int gfs2_dinode_in(struct gfs2_inode *ip, const void *buf) { const struct gfs2_dinode *str = buf; @@ -376,7 +350,7 @@ static int gfs2_dinode_in(struct gfs2_inode *ip, const void *buf) i_uid_write(&ip->i_inode, be32_to_cpu(str->di_uid)); i_gid_write(&ip->i_inode, be32_to_cpu(str->di_gid)); - gfs2_set_nlink(&ip->i_inode, be32_to_cpu(str->di_nlink)); + set_nlink(&ip->i_inode, be32_to_cpu(str->di_nlink)); i_size_write(&ip->i_inode, be64_to_cpu(str->di_size)); gfs2_set_inode_blocks(&ip->i_inode, be64_to_cpu(str->di_blocks)); atime.tv_sec = be64_to_cpu(str->di_atime); @@ -470,7 +444,7 @@ static int inode_go_lock(struct gfs2_holder *gh) (gh->gh_state == LM_ST_EXCLUSIVE)) { spin_lock(&sdp->sd_trunc_lock); if (list_empty(&ip->i_trunc_list)) - list_add(&sdp->sd_trunc_list, &ip->i_trunc_list); + list_add(&ip->i_trunc_list, &sdp->sd_trunc_list); spin_unlock(&sdp->sd_trunc_lock); wake_up(&sdp->sd_quota_wait); return 1; diff --git a/fs/gfs2/incore.h b/fs/gfs2/incore.h index 73fce76e67ee..6e18e9793ec4 100644 --- a/fs/gfs2/incore.h +++ b/fs/gfs2/incore.h @@ -606,6 +606,7 @@ enum { SDF_NOJOURNALID = 6, SDF_RORECOVERY = 7, /* read only recovery */ SDF_SKIP_DLM_UNLOCK = 8, + SDF_FORCE_AIL_FLUSH = 9, }; enum gfs2_freeze_state { @@ -816,6 +817,7 @@ struct gfs2_sbd { atomic_t sd_log_in_flight; struct bio *sd_log_bio; wait_queue_head_t sd_log_flush_wait; + int sd_log_error; atomic_t sd_reserving_log; wait_queue_head_t sd_reserving_log_wait; @@ -831,7 +833,7 @@ struct gfs2_sbd { atomic_t sd_freeze_state; struct mutex sd_freeze_mutex; - char sd_fsname[GFS2_FSNAME_LEN]; + char sd_fsname[GFS2_FSNAME_LEN + 3 * sizeof(int) + 2]; char sd_table_name[GFS2_FSNAME_LEN]; char sd_proto_name[GFS2_FSNAME_LEN]; diff --git a/fs/gfs2/inode.c b/fs/gfs2/inode.c index acca501f8110..863749e29bf9 100644 --- a/fs/gfs2/inode.c +++ b/fs/gfs2/inode.c @@ -109,7 +109,7 @@ static void gfs2_set_iop(struct inode *inode) * @no_addr: The inode number * @no_formal_ino: The inode generation number * @blktype: Requested block type (GFS2_BLKST_DINODE or GFS2_BLKST_UNLINKED; - * GFS2_BLKST_FREE do indicate not to verify) + * GFS2_BLKST_FREE to indicate not to verify) * * If @type is DT_UNKNOWN, the inode type is fetched from disk. * @@ -145,7 +145,6 @@ struct inode *gfs2_inode_lookup(struct super_block *sb, unsigned int type, if (unlikely(error)) goto fail; flush_delayed_work(&ip->i_gl->gl_work); - glock_set_object(ip->i_gl, ip); error = gfs2_glock_get(sdp, no_addr, &gfs2_iopen_glops, CREATE, &io_gl); if (unlikely(error)) @@ -170,11 +169,11 @@ struct inode *gfs2_inode_lookup(struct super_block *sb, unsigned int type, } } + glock_set_object(ip->i_gl, ip); set_bit(GIF_INVALID, &ip->i_flags); error = gfs2_glock_nq_init(io_gl, LM_ST_SHARED, GL_EXACT, &ip->i_iopen_gh); if (unlikely(error)) goto fail_put; - flush_delayed_work(&ip->i_iopen_gh.gh_gl->gl_work); glock_set_object(ip->i_iopen_gh.gh_gl, ip); gfs2_glock_put(io_gl); io_gl = NULL; @@ -202,14 +201,14 @@ struct inode *gfs2_inode_lookup(struct super_block *sb, unsigned int type, fail_refresh: ip->i_iopen_gh.gh_flags |= GL_NOCACHE; - glock_set_object(ip->i_iopen_gh.gh_gl, NULL); + glock_clear_object(ip->i_iopen_gh.gh_gl, ip); gfs2_glock_dq_uninit(&ip->i_iopen_gh); fail_put: if (io_gl) gfs2_glock_put(io_gl); + glock_clear_object(ip->i_gl, ip); if (gfs2_holder_initialized(&i_gh)) gfs2_glock_dq_uninit(&i_gh); - glock_set_object(ip->i_gl, NULL); fail: iget_failed(inode); return ERR_PTR(error); @@ -706,8 +705,9 @@ static int gfs2_create_inode(struct inode *dir, struct dentry *dentry, error = gfs2_glock_get(sdp, ip->i_no_addr, &gfs2_inode_glops, CREATE, &ip->i_gl); if (error) goto fail_free_inode; - + flush_delayed_work(&ip->i_gl->gl_work); glock_set_object(ip->i_gl, ip); + error = gfs2_glock_nq_init(ip->i_gl, LM_ST_EXCLUSIVE, GL_SKIP, ghs + 1); if (error) goto fail_free_inode; @@ -775,14 +775,17 @@ static int gfs2_create_inode(struct inode *dir, struct dentry *dentry, return error; fail_gunlock3: + glock_clear_object(io_gl, ip); gfs2_glock_dq_uninit(&ip->i_iopen_gh); gfs2_glock_put(io_gl); fail_gunlock2: if (io_gl) clear_bit(GLF_INODE_CREATING, &io_gl->gl_flags); fail_free_inode: - if (ip->i_gl) + if (ip->i_gl) { + glock_clear_object(ip->i_gl, ip); gfs2_glock_put(ip->i_gl); + } gfs2_rsqa_delete(ip, NULL); fail_free_acls: if (default_acl) diff --git a/fs/gfs2/lock_dlm.c b/fs/gfs2/lock_dlm.c index 0515f0a68637..65f33a0ac190 100644 --- a/fs/gfs2/lock_dlm.c +++ b/fs/gfs2/lock_dlm.c @@ -23,8 +23,6 @@ #include "sys.h" #include "trace_gfs2.h" -extern struct workqueue_struct *gfs2_control_wq; - /** * gfs2_update_stats - Update time based stats * @mv: Pointer to mean/variance structure to update @@ -1059,6 +1057,7 @@ static void free_recover_size(struct lm_lockstruct *ls) ls->ls_recover_submit = NULL; ls->ls_recover_result = NULL; ls->ls_recover_size = 0; + ls->ls_lvb_bits = NULL; } /* dlm calls before it does lock recovery */ @@ -1175,7 +1174,7 @@ static void gdlm_recovery_result(struct gfs2_sbd *sdp, unsigned int jid, spin_unlock(&ls->ls_recover_spin); } -const struct dlm_lockspace_ops gdlm_lockspace_ops = { +static const struct dlm_lockspace_ops gdlm_lockspace_ops = { .recover_prep = gdlm_recover_prep, .recover_slot = gdlm_recover_slot, .recover_done = gdlm_recover_done, diff --git a/fs/gfs2/log.c b/fs/gfs2/log.c index 9a624f694400..f72c44231406 100644 --- a/fs/gfs2/log.c +++ b/fs/gfs2/log.c @@ -898,6 +898,10 @@ static inline int gfs2_jrnl_flush_reqd(struct gfs2_sbd *sdp) static inline int gfs2_ail_flush_reqd(struct gfs2_sbd *sdp) { unsigned int used_blocks = sdp->sd_jdesc->jd_blocks - atomic_read(&sdp->sd_log_blks_free); + + if (test_and_clear_bit(SDF_FORCE_AIL_FLUSH, &sdp->sd_flags)) + return 1; + return used_blocks + atomic_read(&sdp->sd_log_blks_needed) >= atomic_read(&sdp->sd_log_thresh2); } @@ -919,6 +923,15 @@ int gfs2_logd(void *data) while (!kthread_should_stop()) { + /* Check for errors writing to the journal */ + if (sdp->sd_log_error) { + gfs2_lm_withdraw(sdp, + "GFS2: fsid=%s: error %d: " + "withdrawing the file system to " + "prevent further damage.\n", + sdp->sd_fsname, sdp->sd_log_error); + } + did_flush = false; if (gfs2_jrnl_flush_reqd(sdp) || t == 0) { gfs2_ail1_empty(sdp); diff --git a/fs/gfs2/lops.c b/fs/gfs2/lops.c index 3010f9edd177..c8ff7b7954f0 100644 --- a/fs/gfs2/lops.c +++ b/fs/gfs2/lops.c @@ -207,8 +207,11 @@ static void gfs2_end_log_write(struct bio *bio) struct page *page; int i; - if (bio->bi_status) - fs_err(sdp, "Error %d writing to log\n", bio->bi_status); + if (bio->bi_status) { + fs_err(sdp, "Error %d writing to journal, jid=%u\n", + bio->bi_status, sdp->sd_jdesc->jd_jid); + wake_up(&sdp->sd_logd_waitq); + } bio_for_each_segment_all(bvec, bio, i) { page = bvec->bv_page; @@ -265,7 +268,7 @@ static struct bio *gfs2_log_alloc_bio(struct gfs2_sbd *sdp, u64 blkno) bio = bio_alloc(GFP_NOIO, BIO_MAX_PAGES); bio->bi_iter.bi_sector = blkno * (sb->s_blocksize >> 9); - bio->bi_bdev = sb->s_bdev; + bio_set_dev(bio, sb->s_bdev); bio->bi_end_io = gfs2_end_log_write; bio->bi_private = sdp; diff --git a/fs/gfs2/meta_io.c b/fs/gfs2/meta_io.c index fabe1614f879..52de1036d9f9 100644 --- a/fs/gfs2/meta_io.c +++ b/fs/gfs2/meta_io.c @@ -221,7 +221,7 @@ static void gfs2_submit_bhs(int op, int op_flags, struct buffer_head *bhs[], bio = bio_alloc(GFP_NOIO, num); bio->bi_iter.bi_sector = bh->b_blocknr * (bh->b_size >> 9); - bio->bi_bdev = bh->b_bdev; + bio_set_dev(bio, bh->b_bdev); while (num > 0) { bh = *bhs; if (!bio_add_page(bio, bh->b_page, bh->b_size, bh_offset(bh))) { @@ -419,8 +419,9 @@ int gfs2_meta_indirect_buffer(struct gfs2_inode *ip, int height, u64 num, if (ret == 0 && gfs2_metatype_check(sdp, bh, mtype)) { brelse(bh); ret = -EIO; + } else { + *bhp = bh; } - *bhp = bh; return ret; } @@ -452,7 +453,7 @@ struct buffer_head *gfs2_meta_ra(struct gfs2_glock *gl, u64 dblock, u32 extlen) if (buffer_uptodate(first_bh)) goto out; if (!buffer_locked(first_bh)) - ll_rw_block(REQ_OP_READ, REQ_META, 1, &first_bh); + ll_rw_block(REQ_OP_READ, REQ_META | REQ_PRIO, 1, &first_bh); dblock++; extlen--; @@ -461,7 +462,9 @@ struct buffer_head *gfs2_meta_ra(struct gfs2_glock *gl, u64 dblock, u32 extlen) bh = gfs2_getbuf(gl, dblock, CREATE); if (!buffer_uptodate(bh) && !buffer_locked(bh)) - ll_rw_block(REQ_OP_READ, REQ_RAHEAD | REQ_META, 1, &bh); + ll_rw_block(REQ_OP_READ, + REQ_RAHEAD | REQ_META | REQ_PRIO, + 1, &bh); brelse(bh); dblock++; extlen--; diff --git a/fs/gfs2/ops_fstype.c b/fs/gfs2/ops_fstype.c index e76058d34b74..84593587691d 100644 --- a/fs/gfs2/ops_fstype.c +++ b/fs/gfs2/ops_fstype.c @@ -242,7 +242,7 @@ static int gfs2_read_super(struct gfs2_sbd *sdp, sector_t sector, int silent) bio = bio_alloc(GFP_NOFS, 1); bio->bi_iter.bi_sector = sector * (sb->s_blocksize >> 9); - bio->bi_bdev = sb->s_bdev; + bio_set_dev(bio, sb->s_bdev); bio_add_page(bio, page, PAGE_SIZE, 0); bio->bi_end_io = end_bio_io_page; @@ -1113,7 +1113,7 @@ static int fill_super(struct super_block *sb, struct gfs2_args *args, int silent return error; } - snprintf(sdp->sd_fsname, GFS2_FSNAME_LEN, "%s", sdp->sd_table_name); + snprintf(sdp->sd_fsname, sizeof(sdp->sd_fsname), "%s", sdp->sd_table_name); error = gfs2_sys_fs_add(sdp); /* @@ -1159,10 +1159,10 @@ static int fill_super(struct super_block *sb, struct gfs2_args *args, int silent } if (sdp->sd_args.ar_spectator) - snprintf(sdp->sd_fsname, GFS2_FSNAME_LEN, "%s.s", + snprintf(sdp->sd_fsname, sizeof(sdp->sd_fsname), "%s.s", sdp->sd_table_name); else - snprintf(sdp->sd_fsname, GFS2_FSNAME_LEN, "%s.%u", + snprintf(sdp->sd_fsname, sizeof(sdp->sd_fsname), "%s.%u", sdp->sd_table_name, sdp->sd_lockstruct.ls_jid); error = init_inodes(sdp, DO); @@ -1388,7 +1388,6 @@ static void gfs2_kill_sb(struct super_block *sb) sdp->sd_root_dir = NULL; sdp->sd_master_dir = NULL; shrink_dcache_sb(sb); - gfs2_delete_debugfs_file(sdp); free_percpu(sdp->sd_lkstats); kill_block_super(sb); } diff --git a/fs/gfs2/quota.c b/fs/gfs2/quota.c index c2ca9566b764..e647938432bd 100644 --- a/fs/gfs2/quota.c +++ b/fs/gfs2/quota.c @@ -730,7 +730,7 @@ static int gfs2_write_buf_to_page(struct gfs2_inode *ip, unsigned long index, if (PageUptodate(page)) set_buffer_uptodate(bh); if (!buffer_uptodate(bh)) { - ll_rw_block(REQ_OP_READ, REQ_META, 1, &bh); + ll_rw_block(REQ_OP_READ, REQ_META | REQ_PRIO, 1, &bh); wait_on_buffer(bh); if (!buffer_uptodate(bh)) goto unlock_out; @@ -1474,8 +1474,11 @@ static void quotad_error(struct gfs2_sbd *sdp, const char *msg, int error) { if (error == 0 || error == -EROFS) return; - if (!test_bit(SDF_SHUTDOWN, &sdp->sd_flags)) + if (!test_bit(SDF_SHUTDOWN, &sdp->sd_flags)) { fs_err(sdp, "gfs2_quotad: %s error %d\n", msg, error); + sdp->sd_log_error = error; + wake_up(&sdp->sd_logd_waitq); + } } static void quotad_check_timeo(struct gfs2_sbd *sdp, const char *msg, diff --git a/fs/gfs2/rgrp.c b/fs/gfs2/rgrp.c index 836e38ba5d0a..95b2a57ded33 100644 --- a/fs/gfs2/rgrp.c +++ b/fs/gfs2/rgrp.c @@ -705,8 +705,7 @@ void gfs2_clear_rgrpd(struct gfs2_sbd *sdp) rb_erase(n, &sdp->sd_rindex_tree); if (gl) { - glock_set_object(gl, NULL); - gfs2_glock_add_to_lru(gl); + glock_clear_object(gl, rgd); gfs2_glock_put(gl); } diff --git a/fs/gfs2/super.c b/fs/gfs2/super.c index fdedec379b78..769841185ce5 100644 --- a/fs/gfs2/super.c +++ b/fs/gfs2/super.c @@ -924,6 +924,7 @@ restart: gfs2_jindex_free(sdp); /* Take apart glock structures and buffer lists */ gfs2_gl_hash_clear(sdp); + gfs2_delete_debugfs_file(sdp); /* Unmount the locking protocol */ gfs2_lm_unmount(sdp); @@ -943,9 +944,9 @@ static int gfs2_sync_fs(struct super_block *sb, int wait) struct gfs2_sbd *sdp = sb->s_fs_info; gfs2_quota_sync(sb, -1); - if (wait && sdp) + if (wait) gfs2_log_flush(sdp, NULL, NORMAL_FLUSH); - return 0; + return sdp->sd_log_error; } void gfs2_freeze_func(struct work_struct *work) @@ -1295,7 +1296,7 @@ static int gfs2_remount_fs(struct super_block *sb, int *flags, char *data) * gfs2_drop_inode - Drop an inode (test for remote unlink) * @inode: The inode to drop * - * If we've received a callback on an iopen lock then its because a + * If we've received a callback on an iopen lock then it's because a * remote node tried to deallocate the inode but failed due to this node * still having the inode open. Here we mark the link count zero * since we know that it must have reached zero if the GLF_DEMOTE flag @@ -1317,6 +1318,23 @@ static int gfs2_drop_inode(struct inode *inode) if (test_bit(GLF_DEMOTE, &gl->gl_flags)) clear_nlink(inode); } + + /* + * When under memory pressure when an inode's link count has dropped to + * zero, defer deleting the inode to the delete workqueue. This avoids + * calling into DLM under memory pressure, which can deadlock. + */ + if (!inode->i_nlink && + unlikely(current->flags & PF_MEMALLOC) && + gfs2_holder_initialized(&ip->i_iopen_gh)) { + struct gfs2_glock *gl = ip->i_iopen_gh.gh_gl; + + gfs2_glock_hold(gl); + if (queue_work(gfs2_delete_workqueue, &gl->gl_delete) == 0) + gfs2_glock_queue_put(gl); + return false; + } + return generic_drop_inode(inode); } @@ -1501,6 +1519,22 @@ out_qs: } /** + * gfs2_glock_put_eventually + * @gl: The glock to put + * + * When under memory pressure, trigger a deferred glock put to make sure we + * won't call into DLM and deadlock. Otherwise, put the glock directly. + */ + +static void gfs2_glock_put_eventually(struct gfs2_glock *gl) +{ + if (current->flags & PF_MEMALLOC) + gfs2_glock_queue_put(gl); + else + gfs2_glock_put(gl); +} + +/** * gfs2_evict_inode - Remove an inode from cache * @inode: The inode to evict * @@ -1544,9 +1578,14 @@ static void gfs2_evict_inode(struct inode *inode) goto alloc_failed; } + /* Deletes should never happen under memory pressure anymore. */ + if (WARN_ON_ONCE(current->flags & PF_MEMALLOC)) + goto out; + /* Must not read inode block until block type has been verified */ error = gfs2_glock_nq_init(ip->i_gl, LM_ST_EXCLUSIVE, GL_SKIP, &gh); if (unlikely(error)) { + glock_clear_object(ip->i_iopen_gh.gh_gl, ip); ip->i_iopen_gh.gh_flags |= GL_NOCACHE; gfs2_glock_dq_uninit(&ip->i_iopen_gh); goto out; @@ -1562,6 +1601,12 @@ static void gfs2_evict_inode(struct inode *inode) goto out_truncate; } + /* + * The inode may have been recreated in the meantime. + */ + if (inode->i_nlink) + goto out_truncate; + alloc_failed: if (gfs2_holder_initialized(&ip->i_iopen_gh) && test_bit(HIF_HOLDER, &ip->i_iopen_gh.gh_iflags)) { @@ -1595,6 +1640,11 @@ alloc_failed: goto out_unlock; } + /* We're about to clear the bitmap for the dinode, but as soon as we + do, gfs2_create_inode can create another inode at the same block + location and try to set gl_object again. We clear gl_object here so + that subsequent inode creates don't see an old gl_object. */ + glock_clear_object(ip->i_gl, ip); error = gfs2_dinode_dealloc(ip); goto out_unlock; @@ -1623,14 +1673,17 @@ out_unlock: gfs2_rs_deltree(&ip->i_res); if (gfs2_holder_initialized(&ip->i_iopen_gh)) { + glock_clear_object(ip->i_iopen_gh.gh_gl, ip); if (test_bit(HIF_HOLDER, &ip->i_iopen_gh.gh_iflags)) { ip->i_iopen_gh.gh_flags |= GL_NOCACHE; gfs2_glock_dq(&ip->i_iopen_gh); } gfs2_holder_uninit(&ip->i_iopen_gh); } - if (gfs2_holder_initialized(&gh)) + if (gfs2_holder_initialized(&gh)) { + glock_clear_object(ip->i_gl, ip); gfs2_glock_dq_uninit(&gh); + } if (error && error != GLR_TRYFAILED && error != -EROFS) fs_warn(sdp, "gfs2_evict_inode: %d\n", error); out: @@ -1640,15 +1693,19 @@ out: gfs2_ordered_del_inode(ip); clear_inode(inode); gfs2_dir_hash_inval(ip); - glock_set_object(ip->i_gl, NULL); + glock_clear_object(ip->i_gl, ip); wait_on_bit_io(&ip->i_flags, GIF_GLOP_PENDING, TASK_UNINTERRUPTIBLE); gfs2_glock_add_to_lru(ip->i_gl); - gfs2_glock_put(ip->i_gl); + gfs2_glock_put_eventually(ip->i_gl); ip->i_gl = NULL; if (gfs2_holder_initialized(&ip->i_iopen_gh)) { - glock_set_object(ip->i_iopen_gh.gh_gl, NULL); + struct gfs2_glock *gl = ip->i_iopen_gh.gh_gl; + + glock_clear_object(gl, ip); ip->i_iopen_gh.gh_flags |= GL_NOCACHE; + gfs2_glock_hold(gl); gfs2_glock_dq_uninit(&ip->i_iopen_gh); + gfs2_glock_put_eventually(gl); } } diff --git a/fs/gfs2/util.h b/fs/gfs2/util.h index c81295f407f6..3926f95a6eb7 100644 --- a/fs/gfs2/util.h +++ b/fs/gfs2/util.h @@ -151,6 +151,7 @@ extern struct kmem_cache *gfs2_rgrpd_cachep; extern struct kmem_cache *gfs2_quotad_cachep; extern struct kmem_cache *gfs2_qadata_cachep; extern mempool_t *gfs2_page_pool; +extern struct workqueue_struct *gfs2_control_wq; static inline unsigned int gfs2_tune_get_i(struct gfs2_tune *gt, unsigned int *p) diff --git a/fs/gfs2/xattr.c b/fs/gfs2/xattr.c index 54179554c7d2..ea09e41dbb49 100644 --- a/fs/gfs2/xattr.c +++ b/fs/gfs2/xattr.c @@ -25,6 +25,7 @@ #include "meta_io.h" #include "quota.h" #include "rgrp.h" +#include "super.h" #include "trans.h" #include "util.h" @@ -1209,8 +1210,12 @@ int __gfs2_xattr_set(struct inode *inode, const char *name, if (namel > GFS2_EA_MAX_NAME_LEN) return -ERANGE; - if (value == NULL) - return gfs2_xattr_remove(ip, type, name); + if (value == NULL) { + error = gfs2_xattr_remove(ip, type, name); + if (error == -ENODATA && !(flags & XATTR_REPLACE)) + error = 0; + return error; + } if (ea_check_size(sdp, namel, size)) return -ERANGE; diff --git a/fs/hfs/inode.c b/fs/hfs/inode.c index bfbba799430f..2538b49cc349 100644 --- a/fs/hfs/inode.c +++ b/fs/hfs/inode.c @@ -656,7 +656,7 @@ static int hfs_file_fsync(struct file *filp, loff_t start, loff_t end, struct super_block * sb; int ret, err; - ret = filemap_write_and_wait_range(inode->i_mapping, start, end); + ret = file_write_and_wait_range(filp, start, end); if (ret) return ret; inode_lock(inode); diff --git a/fs/hfsplus/inode.c b/fs/hfsplus/inode.c index e8638d528195..4f26b6877130 100644 --- a/fs/hfsplus/inode.c +++ b/fs/hfsplus/inode.c @@ -283,7 +283,7 @@ int hfsplus_file_fsync(struct file *file, loff_t start, loff_t end, struct hfsplus_sb_info *sbi = HFSPLUS_SB(inode->i_sb); int error = 0, error2; - error = filemap_write_and_wait_range(inode->i_mapping, start, end); + error = file_write_and_wait_range(file, start, end); if (error) return error; inode_lock(inode); diff --git a/fs/hfsplus/wrapper.c b/fs/hfsplus/wrapper.c index e254fa0f0697..10032b919a85 100644 --- a/fs/hfsplus/wrapper.c +++ b/fs/hfsplus/wrapper.c @@ -65,7 +65,7 @@ int hfsplus_submit_bio(struct super_block *sb, sector_t sector, bio = bio_alloc(GFP_NOIO, 1); bio->bi_iter.bi_sector = sector; - bio->bi_bdev = sb->s_bdev; + bio_set_dev(bio, sb->s_bdev); bio_set_op_attrs(bio, op, op_flags); if (op != WRITE && data) diff --git a/fs/hostfs/hostfs_kern.c b/fs/hostfs/hostfs_kern.c index e61261a7417e..c148e7f4f451 100644 --- a/fs/hostfs/hostfs_kern.c +++ b/fs/hostfs/hostfs_kern.c @@ -374,7 +374,7 @@ static int hostfs_fsync(struct file *file, loff_t start, loff_t end, struct inode *inode = file->f_mapping->host; int ret; - ret = filemap_write_and_wait_range(inode->i_mapping, start, end); + ret = file_write_and_wait_range(file, start, end); if (ret) return ret; diff --git a/fs/hpfs/file.c b/fs/hpfs/file.c index b3be1b5a62e2..f26138425b16 100644 --- a/fs/hpfs/file.c +++ b/fs/hpfs/file.c @@ -24,7 +24,7 @@ int hpfs_file_fsync(struct file *file, loff_t start, loff_t end, int datasync) struct inode *inode = file->f_mapping->host; int ret; - ret = filemap_write_and_wait_range(file->f_mapping, start, end); + ret = file_write_and_wait_range(file, start, end); if (ret) return ret; return sync_blockdev(inode->i_sb->s_bdev); diff --git a/fs/hugetlbfs/inode.c b/fs/hugetlbfs/inode.c index 28d2753be094..59073e9f01a4 100644 --- a/fs/hugetlbfs/inode.c +++ b/fs/hugetlbfs/inode.c @@ -334,7 +334,7 @@ static void remove_huge_page(struct page *page) } static void -hugetlb_vmdelete_list(struct rb_root *root, pgoff_t start, pgoff_t end) +hugetlb_vmdelete_list(struct rb_root_cached *root, pgoff_t start, pgoff_t end) { struct vm_area_struct *vma; @@ -401,9 +401,8 @@ static void remove_inode_hugepages(struct inode *inode, loff_t lstart, const pgoff_t end = lend >> huge_page_shift(h); struct vm_area_struct pseudo_vma; struct pagevec pvec; - pgoff_t next; + pgoff_t next, index; int i, freed = 0; - long lookup_nr = PAGEVEC_SIZE; bool truncate_op = (lend == LLONG_MAX); memset(&pseudo_vma, 0, sizeof(struct vm_area_struct)); @@ -412,33 +411,19 @@ static void remove_inode_hugepages(struct inode *inode, loff_t lstart, next = start; while (next < end) { /* - * Don't grab more pages than the number left in the range. - */ - if (end - next < lookup_nr) - lookup_nr = end - next; - - /* * When no more pages are found, we are done. */ - if (!pagevec_lookup(&pvec, mapping, next, lookup_nr)) + if (!pagevec_lookup_range(&pvec, mapping, &next, end - 1)) break; for (i = 0; i < pagevec_count(&pvec); ++i) { struct page *page = pvec.pages[i]; u32 hash; - /* - * The page (index) could be beyond end. This is - * only possible in the punch hole case as end is - * max page offset in the truncate case. - */ - next = page->index; - if (next >= end) - break; - + index = page->index; hash = hugetlb_fault_mutex_hash(h, current->mm, &pseudo_vma, - mapping, next, 0); + mapping, index, 0); mutex_lock(&hugetlb_fault_mutex_table[hash]); /* @@ -455,8 +440,8 @@ static void remove_inode_hugepages(struct inode *inode, loff_t lstart, i_mmap_lock_write(mapping); hugetlb_vmdelete_list(&mapping->i_mmap, - next * pages_per_huge_page(h), - (next + 1) * pages_per_huge_page(h)); + index * pages_per_huge_page(h), + (index + 1) * pages_per_huge_page(h)); i_mmap_unlock_write(mapping); } @@ -475,14 +460,13 @@ static void remove_inode_hugepages(struct inode *inode, loff_t lstart, freed++; if (!truncate_op) { if (unlikely(hugetlb_unreserve_pages(inode, - next, next + 1, 1))) + index, index + 1, 1))) hugetlb_fix_reserve_counts(inode); } unlock_page(page); mutex_unlock(&hugetlb_fault_mutex_table[hash]); } - ++next; huge_pagevec_release(&pvec); cond_resched(); } @@ -514,7 +498,7 @@ static int hugetlb_vmtruncate(struct inode *inode, loff_t offset) i_size_write(inode, offset); i_mmap_lock_write(mapping); - if (!RB_EMPTY_ROOT(&mapping->i_mmap)) + if (!RB_EMPTY_ROOT(&mapping->i_mmap.rb_root)) hugetlb_vmdelete_list(&mapping->i_mmap, pgoff, 0); i_mmap_unlock_write(mapping); remove_inode_hugepages(inode, offset, LLONG_MAX); @@ -539,7 +523,7 @@ static long hugetlbfs_punch_hole(struct inode *inode, loff_t offset, loff_t len) inode_lock(inode); i_mmap_lock_write(mapping); - if (!RB_EMPTY_ROOT(&mapping->i_mmap)) + if (!RB_EMPTY_ROOT(&mapping->i_mmap.rb_root)) hugetlb_vmdelete_list(&mapping->i_mmap, hole_start >> PAGE_SHIFT, hole_end >> PAGE_SHIFT); @@ -846,7 +830,10 @@ static int hugetlbfs_migrate_page(struct address_space *mapping, rc = migrate_huge_page_move_mapping(mapping, newpage, page); if (rc != MIGRATEPAGE_SUCCESS) return rc; - migrate_page_copy(newpage, page); + if (mode != MIGRATE_SYNC_NO_COPY) + migrate_page_copy(newpage, page); + else + migrate_page_states(newpage, page); return MIGRATEPAGE_SUCCESS; } diff --git a/fs/inode.c b/fs/inode.c index 50370599e371..210054157a49 100644 --- a/fs/inode.c +++ b/fs/inode.c @@ -353,7 +353,7 @@ void address_space_init_once(struct address_space *mapping) init_rwsem(&mapping->i_mmap_rwsem); INIT_LIST_HEAD(&mapping->private_list); spin_lock_init(&mapping->private_lock); - mapping->i_mmap = RB_ROOT; + mapping->i_mmap = RB_ROOT_CACHED; } EXPORT_SYMBOL(address_space_init_once); @@ -637,6 +637,7 @@ again: dispose_list(&dispose); } +EXPORT_SYMBOL_GPL(evict_inodes); /** * invalidate_inodes - attempt to free all inodes on a superblock diff --git a/fs/internal.h b/fs/internal.h index 9676fe11c093..fedfe94d84ba 100644 --- a/fs/internal.h +++ b/fs/internal.h @@ -132,7 +132,6 @@ static inline bool atime_needs_update_rcu(const struct path *path, extern void inode_io_list_del(struct inode *inode); extern long get_nr_dirty_inodes(void); -extern void evict_inodes(struct super_block *); extern int invalidate_inodes(struct super_block *, bool); /* diff --git a/fs/iomap.c b/fs/iomap.c index 039266128b7f..269b24a01f32 100644 --- a/fs/iomap.c +++ b/fs/iomap.c @@ -278,7 +278,7 @@ iomap_dirty_actor(struct inode *inode, loff_t pos, loff_t length, void *data, unsigned long bytes; /* Bytes to write to page */ offset = (pos & (PAGE_SIZE - 1)); - bytes = min_t(unsigned long, PAGE_SIZE - offset, length); + bytes = min_t(loff_t, PAGE_SIZE - offset, length); rpage = __iomap_read_page(inode, pos); if (IS_ERR(rpage)) @@ -373,7 +373,7 @@ iomap_zero_range_actor(struct inode *inode, loff_t pos, loff_t count, unsigned offset, bytes; offset = pos & (PAGE_SIZE - 1); /* Within page */ - bytes = min_t(unsigned, PAGE_SIZE - offset, count); + bytes = min_t(loff_t, PAGE_SIZE - offset, count); if (IS_DAX(inode)) status = iomap_dax_zero(pos, offset, bytes, iomap); @@ -477,10 +477,10 @@ int iomap_page_mkwrite(struct vm_fault *vmf, const struct iomap_ops *ops) set_page_dirty(page); wait_for_stable_page(page); - return 0; + return VM_FAULT_LOCKED; out_unlock: unlock_page(page); - return ret; + return block_page_mkwrite_return(ret); } EXPORT_SYMBOL_GPL(iomap_page_mkwrite); @@ -805,7 +805,7 @@ iomap_dio_zero(struct iomap_dio *dio, struct iomap *iomap, loff_t pos, struct bio *bio; bio = bio_alloc(GFP_KERNEL, 1); - bio->bi_bdev = iomap->bdev; + bio_set_dev(bio, iomap->bdev); bio->bi_iter.bi_sector = iomap->blkno + ((pos - iomap->offset) >> 9); bio->bi_private = dio; @@ -884,7 +884,7 @@ iomap_dio_actor(struct inode *inode, loff_t pos, loff_t length, return 0; bio = bio_alloc(GFP_KERNEL, nr_pages); - bio->bi_bdev = iomap->bdev; + bio_set_dev(bio, iomap->bdev); bio->bi_iter.bi_sector = iomap->blkno + ((pos - iomap->offset) >> 9); bio->bi_write_hint = dio->iocb->ki_hint; diff --git a/fs/isofs/inode.c b/fs/isofs/inode.c index 217a5e7815da..f1ed935322db 100644 --- a/fs/isofs/inode.c +++ b/fs/isofs/inode.c @@ -96,7 +96,7 @@ static int __init init_inodecache(void) 0, (SLAB_RECLAIM_ACCOUNT| SLAB_MEM_SPREAD|SLAB_ACCOUNT), init_once); - if (isofs_inode_cachep == NULL) + if (!isofs_inode_cachep) return -ENOMEM; return 0; } @@ -678,7 +678,7 @@ static int isofs_fill_super(struct super_block *s, void *data, int silent) if (isonum_711(vdp->type) == ISO_VD_END) break; if (isonum_711(vdp->type) == ISO_VD_PRIMARY) { - if (pri == NULL) { + if (!pri) { pri = (struct iso_primary_descriptor *)vdp; /* Save the buffer in case we need it ... */ pri_bh = bh; @@ -742,7 +742,7 @@ root_found: goto out_freebh; } - if (joliet_level && (pri == NULL || !opt.rock)) { + if (joliet_level && (!pri || !opt.rock)) { /* This is the case of Joliet with the norock mount flag. * A disc with both Joliet and Rock Ridge is handled later */ @@ -1298,7 +1298,7 @@ static int isofs_read_inode(struct inode *inode, int relocated) unsigned long bufsize = ISOFS_BUFFER_SIZE(inode); unsigned long block; int high_sierra = sbi->s_high_sierra; - struct buffer_head *bh = NULL; + struct buffer_head *bh; struct iso_directory_record *de; struct iso_directory_record *tmpde = NULL; unsigned int de_len; @@ -1320,8 +1320,7 @@ static int isofs_read_inode(struct inode *inode, int relocated) int frag1 = bufsize - offset; tmpde = kmalloc(de_len, GFP_KERNEL); - if (tmpde == NULL) { - printk(KERN_INFO "%s: out of memory\n", __func__); + if (!tmpde) { ret = -ENOMEM; goto fail; } diff --git a/fs/jffs2/file.c b/fs/jffs2/file.c index c12476e309c6..bd0428bebe9b 100644 --- a/fs/jffs2/file.c +++ b/fs/jffs2/file.c @@ -35,7 +35,7 @@ int jffs2_fsync(struct file *filp, loff_t start, loff_t end, int datasync) struct jffs2_sb_info *c = JFFS2_SB_INFO(inode->i_sb); int ret; - ret = filemap_write_and_wait_range(inode->i_mapping, start, end); + ret = file_write_and_wait_range(filp, start, end); if (ret) return ret; diff --git a/fs/jfs/file.c b/fs/jfs/file.c index 739492c7a3fd..36665fd37095 100644 --- a/fs/jfs/file.c +++ b/fs/jfs/file.c @@ -34,7 +34,7 @@ int jfs_fsync(struct file *file, loff_t start, loff_t end, int datasync) struct inode *inode = file->f_mapping->host; int rc = 0; - rc = filemap_write_and_wait_range(inode->i_mapping, start, end); + rc = file_write_and_wait_range(file, start, end); if (rc) return rc; diff --git a/fs/jfs/jfs_logmgr.c b/fs/jfs/jfs_logmgr.c index a21f0e9eecd4..0e5d412c0b01 100644 --- a/fs/jfs/jfs_logmgr.c +++ b/fs/jfs/jfs_logmgr.c @@ -1995,7 +1995,7 @@ static int lbmRead(struct jfs_log * log, int pn, struct lbuf ** bpp) bio = bio_alloc(GFP_NOFS, 1); bio->bi_iter.bi_sector = bp->l_blkno << (log->l2bsize - 9); - bio->bi_bdev = log->bdev; + bio_set_dev(bio, log->bdev); bio_add_page(bio, bp->l_page, LOGPSIZE, bp->l_offset); BUG_ON(bio->bi_iter.bi_size != LOGPSIZE); @@ -2139,7 +2139,7 @@ static void lbmStartIO(struct lbuf * bp) bio = bio_alloc(GFP_NOFS, 1); bio->bi_iter.bi_sector = bp->l_blkno << (log->l2bsize - 9); - bio->bi_bdev = log->bdev; + bio_set_dev(bio, log->bdev); bio_add_page(bio, bp->l_page, LOGPSIZE, bp->l_offset); BUG_ON(bio->bi_iter.bi_size != LOGPSIZE); diff --git a/fs/jfs/jfs_metapage.c b/fs/jfs/jfs_metapage.c index 65120a471729..1c4b9ad4d7ab 100644 --- a/fs/jfs/jfs_metapage.c +++ b/fs/jfs/jfs_metapage.c @@ -430,7 +430,7 @@ static int metapage_writepage(struct page *page, struct writeback_control *wbc) len = min(xlen, (int)JFS_SBI(inode->i_sb)->nbperpage); bio = bio_alloc(GFP_NOFS, 1); - bio->bi_bdev = inode->i_sb->s_bdev; + bio_set_dev(bio, inode->i_sb->s_bdev); bio->bi_iter.bi_sector = pblock << (inode->i_blkbits - 9); bio->bi_end_io = metapage_write_end_io; bio->bi_private = page; @@ -510,7 +510,7 @@ static int metapage_readpage(struct file *fp, struct page *page) submit_bio(bio); bio = bio_alloc(GFP_NOFS, 1); - bio->bi_bdev = inode->i_sb->s_bdev; + bio_set_dev(bio, inode->i_sb->s_bdev); bio->bi_iter.bi_sector = pblock << (inode->i_blkbits - 9); bio->bi_end_io = metapage_read_end_io; diff --git a/fs/jfs/super.c b/fs/jfs/super.c index 78b41e1d5c67..60726ae7cf26 100644 --- a/fs/jfs/super.c +++ b/fs/jfs/super.c @@ -619,16 +619,10 @@ static int jfs_fill_super(struct super_block *sb, void *data, int silent) if (!sb->s_root) goto out_no_root; - /* logical blocks are represented by 40 bits in pxd_t, etc. */ - sb->s_maxbytes = ((u64) sb->s_blocksize) << 40; -#if BITS_PER_LONG == 32 - /* - * Page cache is indexed by long. - * I would use MAX_LFS_FILESIZE, but it's only half as big + /* logical blocks are represented by 40 bits in pxd_t, etc. + * and page cache is indexed by long */ - sb->s_maxbytes = min(((u64) PAGE_SIZE << 32) - 1, - (u64)sb->s_maxbytes); -#endif + sb->s_maxbytes = min(((loff_t)sb->s_blocksize) << 40, MAX_LFS_FILESIZE); sb->s_time_gran = 1; return 0; diff --git a/fs/kernfs/dir.c b/fs/kernfs/dir.c index db5900aaa55a..89d1dc19340b 100644 --- a/fs/kernfs/dir.c +++ b/fs/kernfs/dir.c @@ -21,6 +21,7 @@ DEFINE_MUTEX(kernfs_mutex); static DEFINE_SPINLOCK(kernfs_rename_lock); /* kn->parent and ->name */ static char kernfs_pr_cont_buf[PATH_MAX]; /* protected by rename_lock */ +static DEFINE_SPINLOCK(kernfs_idr_lock); /* root->ino_idr */ #define rb_to_kn(X) rb_entry((X), struct kernfs_node, rb) @@ -507,6 +508,10 @@ void kernfs_put(struct kernfs_node *kn) struct kernfs_node *parent; struct kernfs_root *root; + /* + * kernfs_node is freed with ->count 0, kernfs_find_and_get_node_by_ino + * depends on this to filter reused stale node + */ if (!kn || !atomic_dec_and_test(&kn->count)) return; root = kernfs_root(kn); @@ -533,7 +538,9 @@ void kernfs_put(struct kernfs_node *kn) simple_xattrs_free(&kn->iattr->xattrs); } kfree(kn->iattr); - ida_simple_remove(&root->ino_ida, kn->ino); + spin_lock(&kernfs_idr_lock); + idr_remove(&root->ino_idr, kn->id.ino); + spin_unlock(&kernfs_idr_lock); kmem_cache_free(kernfs_node_cache, kn); kn = parent; @@ -542,7 +549,7 @@ void kernfs_put(struct kernfs_node *kn) goto repeat; } else { /* just released the root kn, free @root too */ - ida_destroy(&root->ino_ida); + idr_destroy(&root->ino_idr); kfree(root); } } @@ -559,7 +566,7 @@ static int kernfs_dop_revalidate(struct dentry *dentry, unsigned int flags) if (d_really_is_negative(dentry)) goto out_bad_unlocked; - kn = dentry->d_fsdata; + kn = kernfs_dentry_node(dentry); mutex_lock(&kernfs_mutex); /* The kernfs node has been deactivated */ @@ -567,7 +574,7 @@ static int kernfs_dop_revalidate(struct dentry *dentry, unsigned int flags) goto out_bad; /* The kernfs node has been moved? */ - if (dentry->d_parent->d_fsdata != kn->parent) + if (kernfs_dentry_node(dentry->d_parent) != kn->parent) goto out_bad; /* The kernfs node has been renamed */ @@ -587,14 +594,8 @@ out_bad_unlocked: return 0; } -static void kernfs_dop_release(struct dentry *dentry) -{ - kernfs_put(dentry->d_fsdata); -} - const struct dentry_operations kernfs_dops = { .d_revalidate = kernfs_dop_revalidate, - .d_release = kernfs_dop_release, }; /** @@ -610,8 +611,9 @@ const struct dentry_operations kernfs_dops = { */ struct kernfs_node *kernfs_node_from_dentry(struct dentry *dentry) { - if (dentry->d_sb->s_op == &kernfs_sops) - return dentry->d_fsdata; + if (dentry->d_sb->s_op == &kernfs_sops && + !d_really_is_negative(dentry)) + return kernfs_dentry_node(dentry); return NULL; } @@ -620,6 +622,8 @@ static struct kernfs_node *__kernfs_new_node(struct kernfs_root *root, unsigned flags) { struct kernfs_node *kn; + u32 gen; + int cursor; int ret; name = kstrdup_const(name, GFP_KERNEL); @@ -630,11 +634,25 @@ static struct kernfs_node *__kernfs_new_node(struct kernfs_root *root, if (!kn) goto err_out1; - ret = ida_simple_get(&root->ino_ida, 1, 0, GFP_KERNEL); + idr_preload(GFP_KERNEL); + spin_lock(&kernfs_idr_lock); + cursor = idr_get_cursor(&root->ino_idr); + ret = idr_alloc_cyclic(&root->ino_idr, kn, 1, 0, GFP_ATOMIC); + if (ret >= 0 && ret < cursor) + root->next_generation++; + gen = root->next_generation; + spin_unlock(&kernfs_idr_lock); + idr_preload_end(); if (ret < 0) goto err_out2; - kn->ino = ret; + kn->id.ino = ret; + kn->id.generation = gen; + /* + * set ino first. This barrier is paired with atomic_inc_not_zero in + * kernfs_find_and_get_node_by_ino + */ + smp_mb__before_atomic(); atomic_set(&kn->count, 1); atomic_set(&kn->active, KN_DEACTIVATED_BIAS); RB_CLEAR_NODE(&kn->rb); @@ -666,6 +684,54 @@ struct kernfs_node *kernfs_new_node(struct kernfs_node *parent, return kn; } +/* + * kernfs_find_and_get_node_by_ino - get kernfs_node from inode number + * @root: the kernfs root + * @ino: inode number + * + * RETURNS: + * NULL on failure. Return a kernfs node with reference counter incremented + */ +struct kernfs_node *kernfs_find_and_get_node_by_ino(struct kernfs_root *root, + unsigned int ino) +{ + struct kernfs_node *kn; + + rcu_read_lock(); + kn = idr_find(&root->ino_idr, ino); + if (!kn) + goto out; + + /* + * Since kernfs_node is freed in RCU, it's possible an old node for ino + * is freed, but reused before RCU grace period. But a freed node (see + * kernfs_put) or an incompletedly initialized node (see + * __kernfs_new_node) should have 'count' 0. We can use this fact to + * filter out such node. + */ + if (!atomic_inc_not_zero(&kn->count)) { + kn = NULL; + goto out; + } + + /* + * The node could be a new node or a reused node. If it's a new node, + * we are ok. If it's reused because of RCU (because of + * SLAB_TYPESAFE_BY_RCU), the __kernfs_new_node always sets its 'ino' + * before 'count'. So if 'count' is uptodate, 'ino' should be uptodate, + * hence we can use 'ino' to filter stale node. + */ + if (kn->id.ino != ino) + goto out; + rcu_read_unlock(); + + return kn; +out: + rcu_read_unlock(); + kernfs_put(kn); + return NULL; +} + /** * kernfs_add_one - add kernfs_node to parent without warning * @kn: kernfs_node to be added @@ -875,13 +941,14 @@ struct kernfs_root *kernfs_create_root(struct kernfs_syscall_ops *scops, if (!root) return ERR_PTR(-ENOMEM); - ida_init(&root->ino_ida); + idr_init(&root->ino_idr); INIT_LIST_HEAD(&root->supers); + root->next_generation = 1; kn = __kernfs_new_node(root, "", S_IFDIR | S_IRUGO | S_IXUGO, KERNFS_DIR); if (!kn) { - ida_destroy(&root->ino_ida); + idr_destroy(&root->ino_idr); kfree(root); return ERR_PTR(-ENOMEM); } @@ -984,7 +1051,7 @@ static struct dentry *kernfs_iop_lookup(struct inode *dir, unsigned int flags) { struct dentry *ret; - struct kernfs_node *parent = dentry->d_parent->d_fsdata; + struct kernfs_node *parent = dir->i_private; struct kernfs_node *kn; struct inode *inode; const void *ns = NULL; @@ -1001,8 +1068,6 @@ static struct dentry *kernfs_iop_lookup(struct inode *dir, ret = NULL; goto out_unlock; } - kernfs_get(kn); - dentry->d_fsdata = kn; /* attach dentry and inode */ inode = kernfs_get_inode(dir->i_sb, kn); @@ -1039,7 +1104,7 @@ static int kernfs_iop_mkdir(struct inode *dir, struct dentry *dentry, static int kernfs_iop_rmdir(struct inode *dir, struct dentry *dentry) { - struct kernfs_node *kn = dentry->d_fsdata; + struct kernfs_node *kn = kernfs_dentry_node(dentry); struct kernfs_syscall_ops *scops = kernfs_root(kn)->syscall_ops; int ret; @@ -1059,7 +1124,7 @@ static int kernfs_iop_rename(struct inode *old_dir, struct dentry *old_dentry, struct inode *new_dir, struct dentry *new_dentry, unsigned int flags) { - struct kernfs_node *kn = old_dentry->d_fsdata; + struct kernfs_node *kn = kernfs_dentry_node(old_dentry); struct kernfs_node *new_parent = new_dir->i_private; struct kernfs_syscall_ops *scops = kernfs_root(kn)->syscall_ops; int ret; @@ -1572,7 +1637,7 @@ static struct kernfs_node *kernfs_dir_next_pos(const void *ns, static int kernfs_fop_readdir(struct file *file, struct dir_context *ctx) { struct dentry *dentry = file->f_path.dentry; - struct kernfs_node *parent = dentry->d_fsdata; + struct kernfs_node *parent = kernfs_dentry_node(dentry); struct kernfs_node *pos = file->private_data; const void *ns = NULL; @@ -1589,7 +1654,7 @@ static int kernfs_fop_readdir(struct file *file, struct dir_context *ctx) const char *name = pos->name; unsigned int type = dt_type(pos); int len = strlen(name); - ino_t ino = pos->ino; + ino_t ino = pos->id.ino; ctx->pos = pos->hash; file->private_data = pos; diff --git a/fs/kernfs/file.c b/fs/kernfs/file.c index ac2dfe0c5a9c..9698e51656b1 100644 --- a/fs/kernfs/file.c +++ b/fs/kernfs/file.c @@ -616,7 +616,7 @@ static void kernfs_put_open_node(struct kernfs_node *kn, static int kernfs_fop_open(struct inode *inode, struct file *file) { - struct kernfs_node *kn = file->f_path.dentry->d_fsdata; + struct kernfs_node *kn = inode->i_private; struct kernfs_root *root = kernfs_root(kn); const struct kernfs_ops *ops; struct kernfs_open_file *of; @@ -768,7 +768,7 @@ static void kernfs_release_file(struct kernfs_node *kn, static int kernfs_fop_release(struct inode *inode, struct file *filp) { - struct kernfs_node *kn = filp->f_path.dentry->d_fsdata; + struct kernfs_node *kn = inode->i_private; struct kernfs_open_file *of = kernfs_of(filp); if (kn->flags & KERNFS_HAS_RELEASE) { @@ -835,7 +835,7 @@ void kernfs_drain_open_files(struct kernfs_node *kn) static unsigned int kernfs_fop_poll(struct file *filp, poll_table *wait) { struct kernfs_open_file *of = kernfs_of(filp); - struct kernfs_node *kn = filp->f_path.dentry->d_fsdata; + struct kernfs_node *kn = kernfs_dentry_node(filp->f_path.dentry); struct kernfs_open_node *on = kn->attr.open; if (!kernfs_get_active(kn)) @@ -895,7 +895,7 @@ repeat: * have the matching @file available. Look up the inodes * and generate the events manually. */ - inode = ilookup(info->sb, kn->ino); + inode = ilookup(info->sb, kn->id.ino); if (!inode) continue; @@ -903,7 +903,7 @@ repeat: if (parent) { struct inode *p_inode; - p_inode = ilookup(info->sb, parent->ino); + p_inode = ilookup(info->sb, parent->id.ino); if (p_inode) { fsnotify(p_inode, FS_MODIFY | FS_EVENT_ON_CHILD, inode, FSNOTIFY_EVENT_INODE, kn->name, 0); @@ -997,7 +997,7 @@ struct kernfs_node *__kernfs_create_file(struct kernfs_node *parent, #ifdef CONFIG_DEBUG_LOCK_ALLOC if (key) { - lockdep_init_map(&kn->dep_map, "s_active", key, 0); + lockdep_init_map(&kn->dep_map, "kn->count", key, 0); kn->flags |= KERNFS_LOCKDEP; } #endif diff --git a/fs/kernfs/inode.c b/fs/kernfs/inode.c index fb4b4a79a0d6..a34303981deb 100644 --- a/fs/kernfs/inode.c +++ b/fs/kernfs/inode.c @@ -112,7 +112,7 @@ int kernfs_setattr(struct kernfs_node *kn, const struct iattr *iattr) int kernfs_iop_setattr(struct dentry *dentry, struct iattr *iattr) { struct inode *inode = d_inode(dentry); - struct kernfs_node *kn = dentry->d_fsdata; + struct kernfs_node *kn = inode->i_private; int error; if (!kn) @@ -154,7 +154,7 @@ static int kernfs_node_setsecdata(struct kernfs_iattrs *attrs, void **secdata, ssize_t kernfs_iop_listxattr(struct dentry *dentry, char *buf, size_t size) { - struct kernfs_node *kn = dentry->d_fsdata; + struct kernfs_node *kn = kernfs_dentry_node(dentry); struct kernfs_iattrs *attrs; attrs = kernfs_iattrs(kn); @@ -203,8 +203,8 @@ static void kernfs_refresh_inode(struct kernfs_node *kn, struct inode *inode) int kernfs_iop_getattr(const struct path *path, struct kstat *stat, u32 request_mask, unsigned int query_flags) { - struct kernfs_node *kn = path->dentry->d_fsdata; struct inode *inode = d_inode(path->dentry); + struct kernfs_node *kn = inode->i_private; mutex_lock(&kernfs_mutex); kernfs_refresh_inode(kn, inode); @@ -220,6 +220,7 @@ static void kernfs_init_inode(struct kernfs_node *kn, struct inode *inode) inode->i_private = kn; inode->i_mapping->a_ops = &kernfs_aops; inode->i_op = &kernfs_iops; + inode->i_generation = kn->id.generation; set_default_inode_attr(inode, kn->mode); kernfs_refresh_inode(kn, inode); @@ -265,7 +266,7 @@ struct inode *kernfs_get_inode(struct super_block *sb, struct kernfs_node *kn) { struct inode *inode; - inode = iget_locked(sb, kn->ino); + inode = iget_locked(sb, kn->id.ino); if (inode && (inode->i_state & I_NEW)) kernfs_init_inode(kn, inode); diff --git a/fs/kernfs/kernfs-internal.h b/fs/kernfs/kernfs-internal.h index 2d5144ab4251..0f260dcca177 100644 --- a/fs/kernfs/kernfs-internal.h +++ b/fs/kernfs/kernfs-internal.h @@ -70,6 +70,13 @@ struct kernfs_super_info { }; #define kernfs_info(SB) ((struct kernfs_super_info *)(SB->s_fs_info)) +static inline struct kernfs_node *kernfs_dentry_node(struct dentry *dentry) +{ + if (d_really_is_negative(dentry)) + return NULL; + return d_inode(dentry)->i_private; +} + extern const struct super_operations kernfs_sops; extern struct kmem_cache *kernfs_node_cache; @@ -98,6 +105,8 @@ int kernfs_add_one(struct kernfs_node *kn); struct kernfs_node *kernfs_new_node(struct kernfs_node *parent, const char *name, umode_t mode, unsigned flags); +struct kernfs_node *kernfs_find_and_get_node_by_ino(struct kernfs_root *root, + unsigned int ino); /* * file.c diff --git a/fs/kernfs/mount.c b/fs/kernfs/mount.c index d5b149a45be1..95a7c88baed9 100644 --- a/fs/kernfs/mount.c +++ b/fs/kernfs/mount.c @@ -16,6 +16,7 @@ #include <linux/pagemap.h> #include <linux/namei.h> #include <linux/seq_file.h> +#include <linux/exportfs.h> #include "kernfs-internal.h" @@ -33,7 +34,7 @@ static int kernfs_sop_remount_fs(struct super_block *sb, int *flags, char *data) static int kernfs_sop_show_options(struct seq_file *sf, struct dentry *dentry) { - struct kernfs_root *root = kernfs_root(dentry->d_fsdata); + struct kernfs_root *root = kernfs_root(kernfs_dentry_node(dentry)); struct kernfs_syscall_ops *scops = root->syscall_ops; if (scops && scops->show_options) @@ -43,7 +44,7 @@ static int kernfs_sop_show_options(struct seq_file *sf, struct dentry *dentry) static int kernfs_sop_show_path(struct seq_file *sf, struct dentry *dentry) { - struct kernfs_node *node = dentry->d_fsdata; + struct kernfs_node *node = kernfs_dentry_node(dentry); struct kernfs_root *root = kernfs_root(node); struct kernfs_syscall_ops *scops = root->syscall_ops; @@ -64,6 +65,78 @@ const struct super_operations kernfs_sops = { .show_path = kernfs_sop_show_path, }; +/* + * Similar to kernfs_fh_get_inode, this one gets kernfs node from inode + * number and generation + */ +struct kernfs_node *kernfs_get_node_by_id(struct kernfs_root *root, + const union kernfs_node_id *id) +{ + struct kernfs_node *kn; + + kn = kernfs_find_and_get_node_by_ino(root, id->ino); + if (!kn) + return NULL; + if (kn->id.generation != id->generation) { + kernfs_put(kn); + return NULL; + } + return kn; +} + +static struct inode *kernfs_fh_get_inode(struct super_block *sb, + u64 ino, u32 generation) +{ + struct kernfs_super_info *info = kernfs_info(sb); + struct inode *inode; + struct kernfs_node *kn; + + if (ino == 0) + return ERR_PTR(-ESTALE); + + kn = kernfs_find_and_get_node_by_ino(info->root, ino); + if (!kn) + return ERR_PTR(-ESTALE); + inode = kernfs_get_inode(sb, kn); + kernfs_put(kn); + if (!inode) + return ERR_PTR(-ESTALE); + + if (generation && inode->i_generation != generation) { + /* we didn't find the right inode.. */ + iput(inode); + return ERR_PTR(-ESTALE); + } + return inode; +} + +static struct dentry *kernfs_fh_to_dentry(struct super_block *sb, struct fid *fid, + int fh_len, int fh_type) +{ + return generic_fh_to_dentry(sb, fid, fh_len, fh_type, + kernfs_fh_get_inode); +} + +static struct dentry *kernfs_fh_to_parent(struct super_block *sb, struct fid *fid, + int fh_len, int fh_type) +{ + return generic_fh_to_parent(sb, fid, fh_len, fh_type, + kernfs_fh_get_inode); +} + +static struct dentry *kernfs_get_parent_dentry(struct dentry *child) +{ + struct kernfs_node *kn = kernfs_dentry_node(child); + + return d_obtain_alias(kernfs_get_inode(child->d_sb, kn->parent)); +} + +static const struct export_operations kernfs_export_ops = { + .fh_to_dentry = kernfs_fh_to_dentry, + .fh_to_parent = kernfs_fh_to_parent, + .get_parent = kernfs_get_parent_dentry, +}; + /** * kernfs_root_from_sb - determine kernfs_root associated with a super_block * @sb: the super_block in question @@ -159,6 +232,8 @@ static int kernfs_fill_super(struct super_block *sb, unsigned long magic) sb->s_magic = magic; sb->s_op = &kernfs_sops; sb->s_xattr = kernfs_xattr_handlers; + if (info->root->flags & KERNFS_ROOT_SUPPORT_EXPORTOP) + sb->s_export_op = &kernfs_export_ops; sb->s_time_gran = 1; /* get root inode, initialize and unlock it */ @@ -176,8 +251,6 @@ static int kernfs_fill_super(struct super_block *sb, unsigned long magic) pr_debug("%s: could not get root dentry!\n", __func__); return -ENOMEM; } - kernfs_get(info->root->kn); - root->d_fsdata = info->root->kn; sb->s_root = root; sb->s_d_op = &kernfs_dops; return 0; @@ -283,7 +356,6 @@ struct dentry *kernfs_mount_ns(struct file_system_type *fs_type, int flags, void kernfs_kill_sb(struct super_block *sb) { struct kernfs_super_info *info = kernfs_info(sb); - struct kernfs_node *root_kn = sb->s_root->d_fsdata; mutex_lock(&kernfs_mutex); list_del(&info->node); @@ -295,7 +367,6 @@ void kernfs_kill_sb(struct super_block *sb) */ kill_anon_super(sb); kfree(info); - kernfs_put(root_kn); } /** @@ -330,7 +401,16 @@ struct super_block *kernfs_pin_sb(struct kernfs_root *root, const void *ns) void __init kernfs_init(void) { + + /* + * the slab is freed in RCU context, so kernfs_find_and_get_node_by_ino + * can access the slab lock free. This could introduce stale nodes, + * please see how kernfs_find_and_get_node_by_ino filters out stale + * nodes. + */ kernfs_node_cache = kmem_cache_create("kernfs_node_cache", sizeof(struct kernfs_node), - 0, SLAB_PANIC, NULL); + 0, + SLAB_PANIC | SLAB_TYPESAFE_BY_RCU, + NULL); } diff --git a/fs/kernfs/symlink.c b/fs/kernfs/symlink.c index 1684af4a8b9b..08ccabd7047f 100644 --- a/fs/kernfs/symlink.c +++ b/fs/kernfs/symlink.c @@ -98,9 +98,9 @@ static int kernfs_get_target_path(struct kernfs_node *parent, return 0; } -static int kernfs_getlink(struct dentry *dentry, char *path) +static int kernfs_getlink(struct inode *inode, char *path) { - struct kernfs_node *kn = dentry->d_fsdata; + struct kernfs_node *kn = inode->i_private; struct kernfs_node *parent = kn->parent; struct kernfs_node *target = kn->symlink.target_kn; int error; @@ -124,7 +124,7 @@ static const char *kernfs_iop_get_link(struct dentry *dentry, body = kzalloc(PAGE_SIZE, GFP_KERNEL); if (!body) return ERR_PTR(-ENOMEM); - error = kernfs_getlink(dentry, body); + error = kernfs_getlink(inode, body); if (unlikely(error < 0)) { kfree(body); return ERR_PTR(error); diff --git a/fs/locks.c b/fs/locks.c index afefeb4ad6de..1bd71c4d663a 100644 --- a/fs/locks.c +++ b/fs/locks.c @@ -137,6 +137,7 @@ #define IS_FLOCK(fl) (fl->fl_flags & FL_FLOCK) #define IS_LEASE(fl) (fl->fl_flags & (FL_LEASE|FL_DELEG|FL_LAYOUT)) #define IS_OFDLCK(fl) (fl->fl_flags & FL_OFDLCK) +#define IS_REMOTELCK(fl) (fl->fl_pid <= 0) static inline bool is_remote_lock(struct file *filp) { @@ -270,6 +271,22 @@ locks_check_ctx_lists(struct inode *inode) } } +static void +locks_check_ctx_file_list(struct file *filp, struct list_head *list, + char *list_type) +{ + struct file_lock *fl; + struct inode *inode = locks_inode(filp); + + list_for_each_entry(fl, list, fl_list) + if (fl->fl_file == filp) + pr_warn("Leaked %s lock on dev=0x%x:0x%x ino=0x%lx " + " fl_owner=%p fl_flags=0x%x fl_type=0x%x fl_pid=%u\n", + list_type, MAJOR(inode->i_sb->s_dev), + MINOR(inode->i_sb->s_dev), inode->i_ino, + fl->fl_owner, fl->fl_flags, fl->fl_type, fl->fl_pid); +} + void locks_free_lock_context(struct inode *inode) { @@ -733,7 +750,6 @@ static void locks_wake_up_blocks(struct file_lock *blocker) static void locks_insert_lock_ctx(struct file_lock *fl, struct list_head *before) { - fl->fl_nspid = get_pid(task_tgid(current)); list_add_tail(&fl->fl_list, before); locks_insert_global_locks(fl); } @@ -743,10 +759,6 @@ locks_unlink_lock_ctx(struct file_lock *fl) { locks_delete_global_locks(fl); list_del_init(&fl->fl_list); - if (fl->fl_nspid) { - put_pid(fl->fl_nspid); - fl->fl_nspid = NULL; - } locks_wake_up_blocks(fl); } @@ -823,8 +835,6 @@ posix_test_lock(struct file *filp, struct file_lock *fl) list_for_each_entry(cfl, &ctx->flc_posix, fl_list) { if (posix_locks_conflict(fl, cfl)) { locks_copy_conflock(fl, cfl); - if (cfl->fl_nspid) - fl->fl_pid = pid_vnr(cfl->fl_nspid); goto out; } } @@ -2048,9 +2058,33 @@ int vfs_test_lock(struct file *filp, struct file_lock *fl) } EXPORT_SYMBOL_GPL(vfs_test_lock); +/** + * locks_translate_pid - translate a file_lock's fl_pid number into a namespace + * @fl: The file_lock who's fl_pid should be translated + * @ns: The namespace into which the pid should be translated + * + * Used to tranlate a fl_pid into a namespace virtual pid number + */ +static pid_t locks_translate_pid(struct file_lock *fl, struct pid_namespace *ns) +{ + pid_t vnr; + struct pid *pid; + + if (IS_OFDLCK(fl)) + return -1; + if (IS_REMOTELCK(fl)) + return fl->fl_pid; + + rcu_read_lock(); + pid = find_pid_ns(fl->fl_pid, &init_pid_ns); + vnr = pid_nr_ns(pid, ns); + rcu_read_unlock(); + return vnr; +} + static int posix_lock_to_flock(struct flock *flock, struct file_lock *fl) { - flock->l_pid = IS_OFDLCK(fl) ? -1 : fl->fl_pid; + flock->l_pid = locks_translate_pid(fl, task_active_pid_ns(current)); #if BITS_PER_LONG == 32 /* * Make sure we can represent the posix lock via @@ -2072,7 +2106,7 @@ static int posix_lock_to_flock(struct flock *flock, struct file_lock *fl) #if BITS_PER_LONG == 32 static void posix_lock_to_flock64(struct flock64 *flock, struct file_lock *fl) { - flock->l_pid = IS_OFDLCK(fl) ? -1 : fl->fl_pid; + flock->l_pid = locks_translate_pid(fl, task_active_pid_ns(current)); flock->l_start = fl->fl_start; flock->l_len = fl->fl_end == OFFSET_MAX ? 0 : fl->fl_end - fl->fl_start + 1; @@ -2086,14 +2120,17 @@ static void posix_lock_to_flock64(struct flock64 *flock, struct file_lock *fl) */ int fcntl_getlk(struct file *filp, unsigned int cmd, struct flock *flock) { - struct file_lock file_lock; + struct file_lock *fl; int error; + fl = locks_alloc_lock(); + if (fl == NULL) + return -ENOMEM; error = -EINVAL; if (flock->l_type != F_RDLCK && flock->l_type != F_WRLCK) goto out; - error = flock_to_posix_lock(filp, &file_lock, flock); + error = flock_to_posix_lock(filp, fl, flock); if (error) goto out; @@ -2103,23 +2140,22 @@ int fcntl_getlk(struct file *filp, unsigned int cmd, struct flock *flock) goto out; cmd = F_GETLK; - file_lock.fl_flags |= FL_OFDLCK; - file_lock.fl_owner = filp; + fl->fl_flags |= FL_OFDLCK; + fl->fl_owner = filp; } - error = vfs_test_lock(filp, &file_lock); + error = vfs_test_lock(filp, fl); if (error) goto out; - flock->l_type = file_lock.fl_type; - if (file_lock.fl_type != F_UNLCK) { - error = posix_lock_to_flock(flock, &file_lock); + flock->l_type = fl->fl_type; + if (fl->fl_type != F_UNLCK) { + error = posix_lock_to_flock(flock, fl); if (error) - goto rel_priv; + goto out; } -rel_priv: - locks_release_private(&file_lock); out: + locks_free_lock(fl); return error; } @@ -2298,14 +2334,18 @@ out: */ int fcntl_getlk64(struct file *filp, unsigned int cmd, struct flock64 *flock) { - struct file_lock file_lock; + struct file_lock *fl; int error; + fl = locks_alloc_lock(); + if (fl == NULL) + return -ENOMEM; + error = -EINVAL; if (flock->l_type != F_RDLCK && flock->l_type != F_WRLCK) goto out; - error = flock64_to_posix_lock(filp, &file_lock, flock); + error = flock64_to_posix_lock(filp, fl, flock); if (error) goto out; @@ -2315,20 +2355,20 @@ int fcntl_getlk64(struct file *filp, unsigned int cmd, struct flock64 *flock) goto out; cmd = F_GETLK64; - file_lock.fl_flags |= FL_OFDLCK; - file_lock.fl_owner = filp; + fl->fl_flags |= FL_OFDLCK; + fl->fl_owner = filp; } - error = vfs_test_lock(filp, &file_lock); + error = vfs_test_lock(filp, fl); if (error) goto out; - flock->l_type = file_lock.fl_type; - if (file_lock.fl_type != F_UNLCK) - posix_lock_to_flock64(flock, &file_lock); + flock->l_type = fl->fl_type; + if (fl->fl_type != F_UNLCK) + posix_lock_to_flock64(flock, fl); - locks_release_private(&file_lock); out: + locks_free_lock(fl); return error; } @@ -2525,6 +2565,12 @@ void locks_remove_file(struct file *filp) /* remove any leases */ locks_remove_lease(filp, ctx); + + spin_lock(&ctx->flc_lock); + locks_check_ctx_file_list(filp, &ctx->flc_posix, "POSIX"); + locks_check_ctx_file_list(filp, &ctx->flc_flock, "FLOCK"); + locks_check_ctx_file_list(filp, &ctx->flc_lease, "LEASE"); + spin_unlock(&ctx->flc_lock); } /** @@ -2578,22 +2624,16 @@ static void lock_get_status(struct seq_file *f, struct file_lock *fl, { struct inode *inode = NULL; unsigned int fl_pid; + struct pid_namespace *proc_pidns = file_inode(f->file)->i_sb->s_fs_info; - if (fl->fl_nspid) { - struct pid_namespace *proc_pidns = file_inode(f->file)->i_sb->s_fs_info; - - /* Don't let fl_pid change based on who is reading the file */ - fl_pid = pid_nr_ns(fl->fl_nspid, proc_pidns); - - /* - * If there isn't a fl_pid don't display who is waiting on - * the lock if we are called from locks_show, or if we are - * called from __show_fd_info - skip lock entirely - */ - if (fl_pid == 0) - return; - } else - fl_pid = fl->fl_pid; + fl_pid = locks_translate_pid(fl, proc_pidns); + /* + * If there isn't a fl_pid don't display who is waiting on + * the lock if we are called from locks_show, or if we are + * called from __show_fd_info - skip lock entirely + */ + if (fl_pid == 0) + return; if (fl->fl_file != NULL) inode = locks_inode(fl->fl_file); @@ -2668,7 +2708,7 @@ static int locks_show(struct seq_file *f, void *v) fl = hlist_entry(v, struct file_lock, fl_link); - if (fl->fl_nspid && !pid_nr_ns(fl->fl_nspid, proc_pidns)) + if (locks_translate_pid(fl, proc_pidns) == 0) return 0; lock_get_status(f, fl, iter->li_pos, ""); diff --git a/fs/mpage.c b/fs/mpage.c index 2e4c41ccb5c9..37bb77c1302c 100644 --- a/fs/mpage.c +++ b/fs/mpage.c @@ -83,7 +83,7 @@ mpage_alloc(struct block_device *bdev, } if (bio) { - bio->bi_bdev = bdev; + bio_set_dev(bio, bdev); bio->bi_iter.bi_sector = first_sector; } return bio; diff --git a/fs/namei.c b/fs/namei.c index ddb6a7c2b3d4..1180f9c58093 100644 --- a/fs/namei.c +++ b/fs/namei.c @@ -1129,9 +1129,18 @@ static int follow_automount(struct path *path, struct nameidata *nd, * of the daemon to instantiate them before they can be used. */ if (!(nd->flags & (LOOKUP_PARENT | LOOKUP_DIRECTORY | - LOOKUP_OPEN | LOOKUP_CREATE | LOOKUP_AUTOMOUNT)) && - path->dentry->d_inode) - return -EISDIR; + LOOKUP_OPEN | LOOKUP_CREATE | + LOOKUP_AUTOMOUNT))) { + /* Positive dentry that isn't meant to trigger an + * automount, EISDIR will allow it to be used, + * otherwise there's no mount here "now" so return + * ENOENT. + */ + if (path->dentry->d_inode) + return -EISDIR; + else + return -ENOENT; + } if (path->dentry->d_sb->s_user_ns != &init_user_ns) return -EACCES; diff --git a/fs/ncpfs/file.c b/fs/ncpfs/file.c index 76965e772264..a06c07619ee6 100644 --- a/fs/ncpfs/file.c +++ b/fs/ncpfs/file.c @@ -23,7 +23,7 @@ static int ncp_fsync(struct file *file, loff_t start, loff_t end, int datasync) { - return filemap_write_and_wait_range(file->f_mapping, start, end); + return file_write_and_wait_range(file, start, end); } /* diff --git a/fs/nfs/blocklayout/blocklayout.c b/fs/nfs/blocklayout/blocklayout.c index d8863a804b15..995d707537da 100644 --- a/fs/nfs/blocklayout/blocklayout.c +++ b/fs/nfs/blocklayout/blocklayout.c @@ -130,7 +130,7 @@ bl_alloc_init_bio(int npg, struct block_device *bdev, sector_t disk_sector, if (bio) { bio->bi_iter.bi_sector = disk_sector; - bio->bi_bdev = bdev; + bio_set_dev(bio, bdev); bio->bi_end_io = end_io; bio->bi_private = par; } diff --git a/fs/nfs/fscache-index.c b/fs/nfs/fscache-index.c index 777b055063f6..3025fe8584a0 100644 --- a/fs/nfs/fscache-index.c +++ b/fs/nfs/fscache-index.c @@ -252,45 +252,6 @@ enum fscache_checkaux nfs_fscache_inode_check_aux(void *cookie_netfs_data, } /* - * Indication from FS-Cache that the cookie is no longer cached - * - This function is called when the backing store currently caching a cookie - * is removed - * - The netfs should use this to clean up any markers indicating cached pages - * - This is mandatory for any object that may have data - */ -static void nfs_fscache_inode_now_uncached(void *cookie_netfs_data) -{ - struct nfs_inode *nfsi = cookie_netfs_data; - struct pagevec pvec; - pgoff_t first; - int loop, nr_pages; - - pagevec_init(&pvec, 0); - first = 0; - - dprintk("NFS: nfs_inode_now_uncached: nfs_inode 0x%p\n", nfsi); - - for (;;) { - /* grab a bunch of pages to unmark */ - nr_pages = pagevec_lookup(&pvec, - nfsi->vfs_inode.i_mapping, - first, - PAGEVEC_SIZE - pagevec_count(&pvec)); - if (!nr_pages) - break; - - for (loop = 0; loop < nr_pages; loop++) - ClearPageFsCache(pvec.pages[loop]); - - first = pvec.pages[nr_pages - 1]->index + 1; - - pvec.nr = nr_pages; - pagevec_release(&pvec); - cond_resched(); - } -} - -/* * Get an extra reference on a read context. * - This function can be absent if the completion function doesn't require a * context. @@ -330,7 +291,6 @@ const struct fscache_cookie_def nfs_fscache_inode_object_def = { .get_attr = nfs_fscache_inode_get_attr, .get_aux = nfs_fscache_inode_get_aux, .check_aux = nfs_fscache_inode_check_aux, - .now_uncached = nfs_fscache_inode_now_uncached, .get_context = nfs_fh_get_context, .put_context = nfs_fh_put_context, }; diff --git a/fs/nfsd/nfs4xdr.c b/fs/nfsd/nfs4xdr.c index 20fbcab97753..5f940d2a136b 100644 --- a/fs/nfsd/nfs4xdr.c +++ b/fs/nfsd/nfs4xdr.c @@ -144,7 +144,7 @@ static void next_decode_page(struct nfsd4_compoundargs *argp) argp->p = page_address(argp->pagelist[0]); argp->pagelist++; if (argp->pagelen < PAGE_SIZE) { - argp->end = argp->p + (argp->pagelen>>2); + argp->end = argp->p + XDR_QUADLEN(argp->pagelen); argp->pagelen = 0; } else { argp->end = argp->p + (PAGE_SIZE>>2); @@ -1279,9 +1279,7 @@ nfsd4_decode_write(struct nfsd4_compoundargs *argp, struct nfsd4_write *write) argp->pagelen -= pages * PAGE_SIZE; len -= pages * PAGE_SIZE; - argp->p = (__be32 *)page_address(argp->pagelist[0]); - argp->pagelist++; - argp->end = argp->p + XDR_QUADLEN(PAGE_SIZE); + next_decode_page(argp); } argp->p += XDR_QUADLEN(len); diff --git a/fs/nfsd/vfs.c b/fs/nfsd/vfs.c index 38d0383dc7f9..bc69d40c4e8b 100644 --- a/fs/nfsd/vfs.c +++ b/fs/nfsd/vfs.c @@ -969,7 +969,7 @@ nfsd_vfs_write(struct svc_rqst *rqstp, struct svc_fh *fhp, struct file *file, int use_wgather; loff_t pos = offset; unsigned int pflags = current->flags; - int flags = 0; + rwf_t flags = 0; if (test_bit(RQ_LOCAL, &rqstp->rq_flags)) /* diff --git a/fs/nilfs2/page.c b/fs/nilfs2/page.c index f11a3ad2df0c..8616c46d33da 100644 --- a/fs/nilfs2/page.c +++ b/fs/nilfs2/page.c @@ -312,10 +312,9 @@ void nilfs_copy_back_pages(struct address_space *dmap, pagevec_init(&pvec, 0); repeat: - n = pagevec_lookup(&pvec, smap, index, PAGEVEC_SIZE); + n = pagevec_lookup(&pvec, smap, &index); if (!n) return; - index = pvec.pages[n - 1]->index + 1; for (i = 0; i < pagevec_count(&pvec); i++) { struct page *page = pvec.pages[i], *dpage; diff --git a/fs/nilfs2/segbuf.c b/fs/nilfs2/segbuf.c index e73c86d9855c..6c5009cc4e6f 100644 --- a/fs/nilfs2/segbuf.c +++ b/fs/nilfs2/segbuf.c @@ -400,7 +400,7 @@ static struct bio *nilfs_alloc_seg_bio(struct the_nilfs *nilfs, sector_t start, bio = bio_alloc(GFP_NOIO, nr_vecs); } if (likely(bio)) { - bio->bi_bdev = nilfs->ns_bdev; + bio_set_dev(bio, nilfs->ns_bdev); bio->bi_iter.bi_sector = start << (nilfs->ns_blocksize_bits - 9); } diff --git a/fs/notify/dnotify/dnotify.c b/fs/notify/dnotify/dnotify.c index 2430a0415995..cba328315929 100644 --- a/fs/notify/dnotify/dnotify.c +++ b/fs/notify/dnotify/dnotify.c @@ -133,7 +133,7 @@ static void dnotify_free_mark(struct fsnotify_mark *fsn_mark) kmem_cache_free(dnotify_mark_cache, dn_mark); } -static struct fsnotify_ops dnotify_fsnotify_ops = { +static const struct fsnotify_ops dnotify_fsnotify_ops = { .handle_event = dnotify_handle_event, .free_mark = dnotify_free_mark, }; diff --git a/fs/ntfs/dir.c b/fs/ntfs/dir.c index 0ee19ecc982d..1a24be9e8405 100644 --- a/fs/ntfs/dir.c +++ b/fs/ntfs/dir.c @@ -1506,7 +1506,7 @@ static int ntfs_dir_fsync(struct file *filp, loff_t start, loff_t end, ntfs_debug("Entering for inode 0x%lx.", vi->i_ino); - err = filemap_write_and_wait_range(vi->i_mapping, start, end); + err = file_write_and_wait_range(filp, start, end); if (err) return err; inode_lock(vi); diff --git a/fs/ntfs/file.c b/fs/ntfs/file.c index c4f68c338735..331910fa8442 100644 --- a/fs/ntfs/file.c +++ b/fs/ntfs/file.c @@ -1989,7 +1989,7 @@ static int ntfs_file_fsync(struct file *filp, loff_t start, loff_t end, ntfs_debug("Entering for inode 0x%lx.", vi->i_ino); - err = filemap_write_and_wait_range(vi->i_mapping, start, end); + err = file_write_and_wait_range(filp, start, end); if (err) return err; inode_lock(vi); diff --git a/fs/ocfs2/acl.c b/fs/ocfs2/acl.c index e50a387959bf..40b5cc97f7b0 100644 --- a/fs/ocfs2/acl.c +++ b/fs/ocfs2/acl.c @@ -221,7 +221,7 @@ out: /* * Set the access or default ACL of an inode. */ -int ocfs2_set_acl(handle_t *handle, +static int ocfs2_set_acl(handle_t *handle, struct inode *inode, struct buffer_head *di_bh, int type, diff --git a/fs/ocfs2/acl.h b/fs/ocfs2/acl.h index 2783a75b3999..7be0bb756286 100644 --- a/fs/ocfs2/acl.h +++ b/fs/ocfs2/acl.h @@ -28,13 +28,6 @@ struct ocfs2_acl_entry { struct posix_acl *ocfs2_iop_get_acl(struct inode *inode, int type); int ocfs2_iop_set_acl(struct inode *inode, struct posix_acl *acl, int type); -int ocfs2_set_acl(handle_t *handle, - struct inode *inode, - struct buffer_head *di_bh, - int type, - struct posix_acl *acl, - struct ocfs2_alloc_context *meta_ac, - struct ocfs2_alloc_context *data_ac); extern int ocfs2_acl_chmod(struct inode *, struct buffer_head *); extern int ocfs2_init_acl(handle_t *, struct inode *, struct inode *, struct buffer_head *, struct buffer_head *, diff --git a/fs/ocfs2/alloc.c b/fs/ocfs2/alloc.c index fb15a96df0b6..a177eae3aa1a 100644 --- a/fs/ocfs2/alloc.c +++ b/fs/ocfs2/alloc.c @@ -955,8 +955,7 @@ int ocfs2_read_extent_block(struct ocfs2_caching_info *ci, u64 eb_blkno, /* * How many free extents have we got before we need more meta data? */ -int ocfs2_num_free_extents(struct ocfs2_super *osb, - struct ocfs2_extent_tree *et) +int ocfs2_num_free_extents(struct ocfs2_extent_tree *et) { int retval; struct ocfs2_extent_list *el = NULL; @@ -1933,14 +1932,12 @@ out: * the new changes. * * left_rec: the record on the left. - * left_child_el: is the child list pointed to by left_rec * right_rec: the record to the right of left_rec * right_child_el: is the child list pointed to by right_rec * * By definition, this only works on interior nodes. */ static void ocfs2_adjust_adjacent_records(struct ocfs2_extent_rec *left_rec, - struct ocfs2_extent_list *left_child_el, struct ocfs2_extent_rec *right_rec, struct ocfs2_extent_list *right_child_el) { @@ -2003,7 +2000,7 @@ static void ocfs2_adjust_root_records(struct ocfs2_extent_list *root_el, */ BUG_ON(i >= (le16_to_cpu(root_el->l_next_free_rec) - 1)); - ocfs2_adjust_adjacent_records(&root_el->l_recs[i], left_el, + ocfs2_adjust_adjacent_records(&root_el->l_recs[i], &root_el->l_recs[i + 1], right_el); } @@ -2060,8 +2057,7 @@ static void ocfs2_complete_edge_insert(handle_t *handle, el = right_path->p_node[i].el; right_rec = &el->l_recs[0]; - ocfs2_adjust_adjacent_records(left_rec, left_el, right_rec, - right_el); + ocfs2_adjust_adjacent_records(left_rec, right_rec, right_el); ocfs2_journal_dirty(handle, left_path->p_node[i].bh); ocfs2_journal_dirty(handle, right_path->p_node[i].bh); @@ -2509,7 +2505,7 @@ out_ret_path: static int ocfs2_update_edge_lengths(handle_t *handle, struct ocfs2_extent_tree *et, - int subtree_index, struct ocfs2_path *path) + struct ocfs2_path *path) { int i, idx, ret; struct ocfs2_extent_rec *rec; @@ -2755,8 +2751,7 @@ static int ocfs2_rotate_subtree_left(handle_t *handle, if (del_right_subtree) { ocfs2_unlink_subtree(handle, et, left_path, right_path, subtree_index, dealloc); - ret = ocfs2_update_edge_lengths(handle, et, subtree_index, - left_path); + ret = ocfs2_update_edge_lengths(handle, et, left_path); if (ret) { mlog_errno(ret); goto out; @@ -3060,8 +3055,7 @@ static int ocfs2_remove_rightmost_path(handle_t *handle, ocfs2_unlink_subtree(handle, et, left_path, path, subtree_index, dealloc); - ret = ocfs2_update_edge_lengths(handle, et, subtree_index, - left_path); + ret = ocfs2_update_edge_lengths(handle, et, left_path); if (ret) { mlog_errno(ret); goto out; @@ -4790,7 +4784,7 @@ int ocfs2_add_clusters_in_btree(handle_t *handle, if (mark_unwritten) flags = OCFS2_EXT_UNWRITTEN; - free_extents = ocfs2_num_free_extents(osb, et); + free_extents = ocfs2_num_free_extents(et); if (free_extents < 0) { status = free_extents; mlog_errno(status); @@ -5668,7 +5662,7 @@ static int ocfs2_reserve_blocks_for_rec_trunc(struct inode *inode, *ac = NULL; - num_free_extents = ocfs2_num_free_extents(osb, et); + num_free_extents = ocfs2_num_free_extents(et); if (num_free_extents < 0) { ret = num_free_extents; mlog_errno(ret); diff --git a/fs/ocfs2/alloc.h b/fs/ocfs2/alloc.h index 4a5152ec88a3..27b75cf32cfa 100644 --- a/fs/ocfs2/alloc.h +++ b/fs/ocfs2/alloc.h @@ -144,8 +144,7 @@ int ocfs2_remove_btree_range(struct inode *inode, struct ocfs2_cached_dealloc_ctxt *dealloc, u64 refcount_loc, bool refcount_tree_locked); -int ocfs2_num_free_extents(struct ocfs2_super *osb, - struct ocfs2_extent_tree *et); +int ocfs2_num_free_extents(struct ocfs2_extent_tree *et); /* * how many new metadata chunks would an allocation need at maximum? diff --git a/fs/ocfs2/cluster/heartbeat.c b/fs/ocfs2/cluster/heartbeat.c index ffe003982d95..d0206042d068 100644 --- a/fs/ocfs2/cluster/heartbeat.c +++ b/fs/ocfs2/cluster/heartbeat.c @@ -505,8 +505,7 @@ static inline void o2hb_bio_wait_dec(struct o2hb_bio_wait_ctxt *wc, } } -static void o2hb_wait_on_io(struct o2hb_region *reg, - struct o2hb_bio_wait_ctxt *wc) +static void o2hb_wait_on_io(struct o2hb_bio_wait_ctxt *wc) { o2hb_bio_wait_dec(wc, 1); wait_for_completion(&wc->wc_io_complete); @@ -554,7 +553,7 @@ static struct bio *o2hb_setup_one_bio(struct o2hb_region *reg, /* Must put everything in 512 byte sectors for the bio... */ bio->bi_iter.bi_sector = (reg->hr_start_block + cs) << (bits - 9); - bio->bi_bdev = reg->hr_bdev; + bio_set_dev(bio, reg->hr_bdev); bio->bi_private = wc; bio->bi_end_io = o2hb_bio_end_io; bio_set_op_attrs(bio, op, op_flags); @@ -608,7 +607,7 @@ static int o2hb_read_slots(struct o2hb_region *reg, status = 0; bail_and_wait: - o2hb_wait_on_io(reg, &wc); + o2hb_wait_on_io(&wc); if (wc.wc_error && !status) status = wc.wc_error; @@ -1162,7 +1161,7 @@ static int o2hb_do_disk_heartbeat(struct o2hb_region *reg) * before we can go to steady state. This ensures that * people we find in our steady state have seen us. */ - o2hb_wait_on_io(reg, &write_wc); + o2hb_wait_on_io(&write_wc); if (write_wc.wc_error) { /* Do not re-arm the write timeout on I/O error - we * can't be sure that the new block ever made it to @@ -1275,7 +1274,7 @@ static int o2hb_thread(void *data) o2hb_prepare_block(reg, 0); ret = o2hb_issue_node_write(reg, &write_wc); if (ret == 0) - o2hb_wait_on_io(reg, &write_wc); + o2hb_wait_on_io(&write_wc); else mlog_errno(ret); } @@ -2576,22 +2575,6 @@ void o2hb_unregister_callback(const char *region_uuid, } EXPORT_SYMBOL_GPL(o2hb_unregister_callback); -int o2hb_check_node_heartbeating(u8 node_num) -{ - unsigned long testing_map[BITS_TO_LONGS(O2NM_MAX_NODES)]; - - o2hb_fill_node_map(testing_map, sizeof(testing_map)); - if (!test_bit(node_num, testing_map)) { - mlog(ML_HEARTBEAT, - "node (%u) does not have heartbeating enabled.\n", - node_num); - return 0; - } - - return 1; -} -EXPORT_SYMBOL_GPL(o2hb_check_node_heartbeating); - int o2hb_check_node_heartbeating_no_sem(u8 node_num) { unsigned long testing_map[BITS_TO_LONGS(O2NM_MAX_NODES)]; @@ -2626,23 +2609,6 @@ int o2hb_check_node_heartbeating_from_callback(u8 node_num) } EXPORT_SYMBOL_GPL(o2hb_check_node_heartbeating_from_callback); -/* Makes sure our local node is configured with a node number, and is - * heartbeating. */ -int o2hb_check_local_node_heartbeating(void) -{ - u8 node_num; - - /* if this node was set then we have networking */ - node_num = o2nm_this_node(); - if (node_num == O2NM_MAX_NODES) { - mlog(ML_HEARTBEAT, "this node has not been configured.\n"); - return 0; - } - - return o2hb_check_node_heartbeating(node_num); -} -EXPORT_SYMBOL_GPL(o2hb_check_local_node_heartbeating); - /* * this is just a hack until we get the plumbing which flips file systems * read only and drops the hb ref instead of killing the node dead. diff --git a/fs/ocfs2/dir.c b/fs/ocfs2/dir.c index 3ecb9f337b7d..febe6312ceff 100644 --- a/fs/ocfs2/dir.c +++ b/fs/ocfs2/dir.c @@ -3249,7 +3249,7 @@ static int ocfs2_extend_dir(struct ocfs2_super *osb, spin_unlock(&OCFS2_I(dir)->ip_lock); ocfs2_init_dinode_extent_tree(&et, INODE_CACHE(dir), parent_fe_bh); - num_free_extents = ocfs2_num_free_extents(osb, &et); + num_free_extents = ocfs2_num_free_extents(&et); if (num_free_extents < 0) { status = num_free_extents; mlog_errno(status); diff --git a/fs/ocfs2/file.c b/fs/ocfs2/file.c index bfeb647459d9..6e41fc8fabbe 100644 --- a/fs/ocfs2/file.c +++ b/fs/ocfs2/file.c @@ -196,7 +196,7 @@ static int ocfs2_sync_file(struct file *file, loff_t start, loff_t end, if (ocfs2_is_hard_readonly(osb) || ocfs2_is_soft_readonly(osb)) return -EROFS; - err = filemap_write_and_wait_range(inode->i_mapping, start, end); + err = file_write_and_wait_range(file, start, end); if (err) return err; @@ -713,13 +713,6 @@ leave: return status; } -int ocfs2_extend_allocation(struct inode *inode, u32 logical_start, - u32 clusters_to_add, int mark_unwritten) -{ - return __ocfs2_extend_allocation(inode, logical_start, - clusters_to_add, mark_unwritten); -} - /* * While a write will already be ordering the data, a truncate will not. * Thus, we need to explicitly order the zeroed pages. diff --git a/fs/ocfs2/journal.c b/fs/ocfs2/journal.c index d5e5fa7f0743..36304434eacf 100644 --- a/fs/ocfs2/journal.c +++ b/fs/ocfs2/journal.c @@ -1348,7 +1348,6 @@ void ocfs2_complete_mount_recovery(struct ocfs2_super *osb) ocfs2_schedule_truncate_log_flush(osb, 0); osb->local_alloc_copy = NULL; - osb->dirty = 0; /* queue to recover orphan slots for all offline slots */ ocfs2_replay_map_set_state(osb, REPLAY_NEEDED); diff --git a/fs/ocfs2/move_extents.c b/fs/ocfs2/move_extents.c index e52a2852d50d..7eb3b0a6347e 100644 --- a/fs/ocfs2/move_extents.c +++ b/fs/ocfs2/move_extents.c @@ -175,7 +175,7 @@ static int ocfs2_lock_allocators_move_extents(struct inode *inode, unsigned int max_recs_needed = 2 * extents_to_split + clusters_to_move; struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); - num_free_extents = ocfs2_num_free_extents(osb, et); + num_free_extents = ocfs2_num_free_extents(et); if (num_free_extents < 0) { ret = num_free_extents; mlog_errno(ret); diff --git a/fs/ocfs2/ocfs2.h b/fs/ocfs2/ocfs2.h index 0c39d71c67a1..9a50f222ac97 100644 --- a/fs/ocfs2/ocfs2.h +++ b/fs/ocfs2/ocfs2.h @@ -320,7 +320,6 @@ struct ocfs2_super u64 system_dir_blkno; u64 bitmap_blkno; u32 bitmap_cpg; - u8 *uuid; char *uuid_str; u32 uuid_hash; u8 *vol_label; @@ -388,9 +387,8 @@ struct ocfs2_super unsigned int osb_resv_level; unsigned int osb_dir_resv_level; - /* Next three fields are for local node slot recovery during + /* Next two fields are for local node slot recovery during * mount. */ - int dirty; struct ocfs2_dinode *local_alloc_copy; struct ocfs2_quota_recovery *quota_rec; diff --git a/fs/ocfs2/quota_global.c b/fs/ocfs2/quota_global.c index cec495a921e3..c94b6baaa551 100644 --- a/fs/ocfs2/quota_global.c +++ b/fs/ocfs2/quota_global.c @@ -33,7 +33,7 @@ * Locking of quotas with OCFS2 is rather complex. Here are rules that * should be obeyed by all the functions: * - any write of quota structure (either to local or global file) is protected - * by dqio_mutex or dquot->dq_lock. + * by dqio_sem or dquot->dq_lock. * - any modification of global quota file holds inode cluster lock, i_mutex, * and ip_alloc_sem of the global quota file (achieved by * ocfs2_lock_global_qf). It also has to hold qinfo_lock. @@ -42,9 +42,9 @@ * * A rough sketch of locking dependencies (lf = local file, gf = global file): * Normal filesystem operation: - * start_trans -> dqio_mutex -> write to lf + * start_trans -> dqio_sem -> write to lf * Syncing of local and global file: - * ocfs2_lock_global_qf -> start_trans -> dqio_mutex -> qinfo_lock -> + * ocfs2_lock_global_qf -> start_trans -> dqio_sem -> qinfo_lock -> * write to gf * -> write to lf * Acquire dquot for the first time: @@ -60,7 +60,7 @@ * Recovery: * inode cluster lock of recovered lf * -> read bitmaps -> ip_alloc_sem of lf - * -> ocfs2_lock_global_qf -> start_trans -> dqio_mutex -> qinfo_lock -> + * -> ocfs2_lock_global_qf -> start_trans -> dqio_sem -> qinfo_lock -> * write to gf */ @@ -443,13 +443,17 @@ static int __ocfs2_global_write_info(struct super_block *sb, int type) int ocfs2_global_write_info(struct super_block *sb, int type) { int err; - struct ocfs2_mem_dqinfo *info = sb_dqinfo(sb, type)->dqi_priv; + struct quota_info *dqopt = sb_dqopt(sb); + struct ocfs2_mem_dqinfo *info = dqopt->info[type].dqi_priv; + down_write(&dqopt->dqio_sem); err = ocfs2_qinfo_lock(info, 1); if (err < 0) - return err; + goto out_sem; err = __ocfs2_global_write_info(sb, type); ocfs2_qinfo_unlock(info, 1); +out_sem: + up_write(&dqopt->dqio_sem); return err; } @@ -500,7 +504,7 @@ int __ocfs2_sync_dquot(struct dquot *dquot, int freeing) /* Update space and inode usage. Get also other information from * global quota file so that we don't overwrite any changes there. * We are */ - spin_lock(&dq_data_lock); + spin_lock(&dquot->dq_dqb_lock); spacechange = dquot->dq_dqb.dqb_curspace - OCFS2_DQUOT(dquot)->dq_origspace; inodechange = dquot->dq_dqb.dqb_curinodes - @@ -556,7 +560,7 @@ int __ocfs2_sync_dquot(struct dquot *dquot, int freeing) __clear_bit(DQ_LASTSET_B + QIF_ITIME_B, &dquot->dq_flags); OCFS2_DQUOT(dquot)->dq_origspace = dquot->dq_dqb.dqb_curspace; OCFS2_DQUOT(dquot)->dq_originodes = dquot->dq_dqb.dqb_curinodes; - spin_unlock(&dq_data_lock); + spin_unlock(&dquot->dq_dqb_lock); err = ocfs2_qinfo_lock(info, freeing); if (err < 0) { mlog(ML_ERROR, "Failed to lock quota info, losing quota write" @@ -611,7 +615,7 @@ static int ocfs2_sync_dquot_helper(struct dquot *dquot, unsigned long type) mlog_errno(status); goto out_ilock; } - mutex_lock(&sb_dqopt(sb)->dqio_mutex); + down_write(&sb_dqopt(sb)->dqio_sem); status = ocfs2_sync_dquot(dquot); if (status < 0) mlog_errno(status); @@ -619,7 +623,7 @@ static int ocfs2_sync_dquot_helper(struct dquot *dquot, unsigned long type) status = ocfs2_local_write_dquot(dquot); if (status < 0) mlog_errno(status); - mutex_unlock(&sb_dqopt(sb)->dqio_mutex); + up_write(&sb_dqopt(sb)->dqio_sem); ocfs2_commit_trans(osb, handle); out_ilock: ocfs2_unlock_global_qf(oinfo, 1); @@ -666,9 +670,9 @@ static int ocfs2_write_dquot(struct dquot *dquot) mlog_errno(status); goto out; } - mutex_lock(&sb_dqopt(dquot->dq_sb)->dqio_mutex); + down_write(&sb_dqopt(dquot->dq_sb)->dqio_sem); status = ocfs2_local_write_dquot(dquot); - mutex_unlock(&sb_dqopt(dquot->dq_sb)->dqio_mutex); + up_write(&sb_dqopt(dquot->dq_sb)->dqio_sem); ocfs2_commit_trans(osb, handle); out: return status; @@ -920,10 +924,10 @@ static int ocfs2_mark_dquot_dirty(struct dquot *dquot) /* In case user set some limits, sync dquot immediately to global * quota file so that information propagates quicker */ - spin_lock(&dq_data_lock); + spin_lock(&dquot->dq_dqb_lock); if (dquot->dq_flags & mask) sync = 1; - spin_unlock(&dq_data_lock); + spin_unlock(&dquot->dq_dqb_lock); /* This is a slight hack but we can't afford getting global quota * lock if we already have a transaction started. */ if (!sync || journal_current_handle()) { @@ -939,7 +943,7 @@ static int ocfs2_mark_dquot_dirty(struct dquot *dquot) mlog_errno(status); goto out_ilock; } - mutex_lock(&sb_dqopt(sb)->dqio_mutex); + down_write(&sb_dqopt(sb)->dqio_sem); status = ocfs2_sync_dquot(dquot); if (status < 0) { mlog_errno(status); @@ -948,7 +952,7 @@ static int ocfs2_mark_dquot_dirty(struct dquot *dquot) /* Now write updated local dquot structure */ status = ocfs2_local_write_dquot(dquot); out_dlock: - mutex_unlock(&sb_dqopt(sb)->dqio_mutex); + up_write(&sb_dqopt(sb)->dqio_sem); ocfs2_commit_trans(osb, handle); out_ilock: ocfs2_unlock_global_qf(oinfo, 1); diff --git a/fs/ocfs2/quota_local.c b/fs/ocfs2/quota_local.c index 32c5a40c1257..aa700fd10610 100644 --- a/fs/ocfs2/quota_local.c +++ b/fs/ocfs2/quota_local.c @@ -520,8 +520,8 @@ static int ocfs2_recover_local_quota_file(struct inode *lqinode, mlog_errno(status); goto out_drop_lock; } - mutex_lock(&sb_dqopt(sb)->dqio_mutex); - spin_lock(&dq_data_lock); + down_write(&sb_dqopt(sb)->dqio_sem); + spin_lock(&dquot->dq_dqb_lock); /* Add usage from quota entry into quota changes * of our node. Auxiliary variables are important * due to signedness */ @@ -529,7 +529,7 @@ static int ocfs2_recover_local_quota_file(struct inode *lqinode, inodechange = le64_to_cpu(dqblk->dqb_inodemod); dquot->dq_dqb.dqb_curspace += spacechange; dquot->dq_dqb.dqb_curinodes += inodechange; - spin_unlock(&dq_data_lock); + spin_unlock(&dquot->dq_dqb_lock); /* We want to drop reference held by the crashed * node. Since we have our own reference we know * global structure actually won't be freed. */ @@ -553,7 +553,7 @@ static int ocfs2_recover_local_quota_file(struct inode *lqinode, unlock_buffer(qbh); ocfs2_journal_dirty(handle, qbh); out_commit: - mutex_unlock(&sb_dqopt(sb)->dqio_mutex); + up_write(&sb_dqopt(sb)->dqio_sem); ocfs2_commit_trans(OCFS2_SB(sb), handle); out_drop_lock: ocfs2_unlock_global_qf(oinfo, 1); @@ -691,9 +691,6 @@ static int ocfs2_local_read_info(struct super_block *sb, int type) struct ocfs2_quota_recovery *rec; int locked = 0; - /* We don't need the lock and we have to acquire quota file locks - * which will later depend on this lock */ - mutex_unlock(&sb_dqopt(sb)->dqio_mutex); info->dqi_max_spc_limit = 0x7fffffffffffffffLL; info->dqi_max_ino_limit = 0x7fffffffffffffffLL; oinfo = kmalloc(sizeof(struct ocfs2_mem_dqinfo), GFP_NOFS); @@ -772,7 +769,6 @@ static int ocfs2_local_read_info(struct super_block *sb, int type) goto out_err; } - mutex_lock(&sb_dqopt(sb)->dqio_mutex); return 0; out_err: if (oinfo) { @@ -786,7 +782,6 @@ out_err: kfree(oinfo); } brelse(bh); - mutex_lock(&sb_dqopt(sb)->dqio_mutex); return -1; } @@ -882,12 +877,12 @@ static void olq_set_dquot(struct buffer_head *bh, void *private) dqblk->dqb_id = cpu_to_le64(from_kqid(&init_user_ns, od->dq_dquot.dq_id)); - spin_lock(&dq_data_lock); + spin_lock(&od->dq_dquot.dq_dqb_lock); dqblk->dqb_spacemod = cpu_to_le64(od->dq_dquot.dq_dqb.dqb_curspace - od->dq_origspace); dqblk->dqb_inodemod = cpu_to_le64(od->dq_dquot.dq_dqb.dqb_curinodes - od->dq_originodes); - spin_unlock(&dq_data_lock); + spin_unlock(&od->dq_dquot.dq_dqb_lock); trace_olq_set_dquot( (unsigned long long)le64_to_cpu(dqblk->dqb_spacemod), (unsigned long long)le64_to_cpu(dqblk->dqb_inodemod), diff --git a/fs/ocfs2/refcounttree.c b/fs/ocfs2/refcounttree.c index f8933cb53d68..ab156e35ec00 100644 --- a/fs/ocfs2/refcounttree.c +++ b/fs/ocfs2/refcounttree.c @@ -2851,7 +2851,7 @@ static int ocfs2_lock_refcount_allocators(struct super_block *sb, int *credits) { int ret = 0, meta_add = 0; - int num_free_extents = ocfs2_num_free_extents(OCFS2_SB(sb), et); + int num_free_extents = ocfs2_num_free_extents(et); if (num_free_extents < 0) { ret = num_free_extents; diff --git a/fs/ocfs2/suballoc.c b/fs/ocfs2/suballoc.c index 6ad3533940ba..71f22c8fbffd 100644 --- a/fs/ocfs2/suballoc.c +++ b/fs/ocfs2/suballoc.c @@ -2700,7 +2700,7 @@ int ocfs2_lock_allocators(struct inode *inode, BUG_ON(clusters_to_add != 0 && data_ac == NULL); - num_free_extents = ocfs2_num_free_extents(osb, et); + num_free_extents = ocfs2_num_free_extents(et); if (num_free_extents < 0) { ret = num_free_extents; mlog_errno(ret); diff --git a/fs/ocfs2/super.c b/fs/ocfs2/super.c index 83005f486451..3f936be379a9 100644 --- a/fs/ocfs2/super.c +++ b/fs/ocfs2/super.c @@ -2486,7 +2486,6 @@ static int ocfs2_check_volume(struct ocfs2_super *osb) if (dirty) { /* Recovery will be completed after we've mounted the * rest of the volume. */ - osb->dirty = 1; osb->local_alloc_copy = local_alloc; local_alloc = NULL; } diff --git a/fs/ocfs2/xattr.c b/fs/ocfs2/xattr.c index f70c3778d600..5fdf269ba82e 100644 --- a/fs/ocfs2/xattr.c +++ b/fs/ocfs2/xattr.c @@ -6800,7 +6800,7 @@ static int ocfs2_lock_reflink_xattr_rec_allocators( *credits += 1; /* count in the xattr tree change. */ - num_free_extents = ocfs2_num_free_extents(osb, xt_et); + num_free_extents = ocfs2_num_free_extents(xt_et); if (num_free_extents < 0) { ret = num_free_extents; mlog_errno(ret); diff --git a/fs/overlayfs/readdir.c b/fs/overlayfs/readdir.c index 3d424a51cabb..f0fd3adb1693 100644 --- a/fs/overlayfs/readdir.c +++ b/fs/overlayfs/readdir.c @@ -446,14 +446,14 @@ static int ovl_dir_fsync(struct file *file, loff_t start, loff_t end, ovl_path_upper(dentry, &upperpath); realfile = ovl_path_open(&upperpath, O_RDONLY); - smp_mb__before_spinlock(); + inode_lock(inode); if (!od->upperfile) { if (IS_ERR(realfile)) { inode_unlock(inode); return PTR_ERR(realfile); } - od->upperfile = realfile; + smp_store_release(&od->upperfile, realfile); } else { /* somebody has beaten us to it */ if (!IS_ERR(realfile)) diff --git a/fs/proc/base.c b/fs/proc/base.c index 719c2e943ea1..e5d89a0d0b8a 100644 --- a/fs/proc/base.c +++ b/fs/proc/base.c @@ -1408,12 +1408,13 @@ static const struct file_operations proc_fail_nth_operations = { static int sched_show(struct seq_file *m, void *v) { struct inode *inode = m->private; + struct pid_namespace *ns = inode->i_sb->s_fs_info; struct task_struct *p; p = get_proc_task(inode); if (!p) return -ESRCH; - proc_sched_show_task(p, m); + proc_sched_show_task(p, ns, m); put_task_struct(p); @@ -2930,6 +2931,7 @@ static const struct pid_entry tgid_base_stuff[] = { #ifdef CONFIG_PROC_PAGE_MONITOR REG("clear_refs", S_IWUSR, proc_clear_refs_operations), REG("smaps", S_IRUGO, proc_pid_smaps_operations), + REG("smaps_rollup", S_IRUGO, proc_pid_smaps_rollup_operations), REG("pagemap", S_IRUSR, proc_pagemap_operations), #endif #ifdef CONFIG_SECURITY @@ -3323,6 +3325,7 @@ static const struct pid_entry tid_base_stuff[] = { #ifdef CONFIG_PROC_PAGE_MONITOR REG("clear_refs", S_IWUSR, proc_clear_refs_operations), REG("smaps", S_IRUGO, proc_tid_smaps_operations), + REG("smaps_rollup", S_IRUGO, proc_pid_smaps_rollup_operations), REG("pagemap", S_IRUSR, proc_pagemap_operations), #endif #ifdef CONFIG_SECURITY diff --git a/fs/proc/devices.c b/fs/proc/devices.c index 50493edc30e5..e5709343feb7 100644 --- a/fs/proc/devices.c +++ b/fs/proc/devices.c @@ -7,14 +7,14 @@ static int devinfo_show(struct seq_file *f, void *v) { int i = *(loff_t *) v; - if (i < CHRDEV_MAJOR_HASH_SIZE) { + if (i < CHRDEV_MAJOR_MAX) { if (i == 0) seq_puts(f, "Character devices:\n"); chrdev_show(f, i); } #ifdef CONFIG_BLOCK else { - i -= CHRDEV_MAJOR_HASH_SIZE; + i -= CHRDEV_MAJOR_MAX; if (i == 0) seq_puts(f, "\nBlock devices:\n"); blkdev_show(f, i); @@ -25,7 +25,7 @@ static int devinfo_show(struct seq_file *f, void *v) static void *devinfo_start(struct seq_file *f, loff_t *pos) { - if (*pos < (BLKDEV_MAJOR_HASH_SIZE + CHRDEV_MAJOR_HASH_SIZE)) + if (*pos < (BLKDEV_MAJOR_MAX + CHRDEV_MAJOR_MAX)) return pos; return NULL; } @@ -33,7 +33,7 @@ static void *devinfo_start(struct seq_file *f, loff_t *pos) static void *devinfo_next(struct seq_file *f, void *v, loff_t *pos) { (*pos)++; - if (*pos >= (BLKDEV_MAJOR_HASH_SIZE + CHRDEV_MAJOR_HASH_SIZE)) + if (*pos >= (BLKDEV_MAJOR_MAX + CHRDEV_MAJOR_MAX)) return NULL; return pos; } diff --git a/fs/proc/generic.c b/fs/proc/generic.c index e3cda0b5968f..793a67574668 100644 --- a/fs/proc/generic.c +++ b/fs/proc/generic.c @@ -40,8 +40,8 @@ static int proc_match(unsigned int len, const char *name, struct proc_dir_entry static struct proc_dir_entry *pde_subdir_first(struct proc_dir_entry *dir) { - return rb_entry_safe(rb_first(&dir->subdir), struct proc_dir_entry, - subdir_node); + return rb_entry_safe(rb_first_cached(&dir->subdir), + struct proc_dir_entry, subdir_node); } static struct proc_dir_entry *pde_subdir_next(struct proc_dir_entry *dir) @@ -54,7 +54,7 @@ static struct proc_dir_entry *pde_subdir_find(struct proc_dir_entry *dir, const char *name, unsigned int len) { - struct rb_node *node = dir->subdir.rb_node; + struct rb_node *node = dir->subdir.rb_root.rb_node; while (node) { struct proc_dir_entry *de = rb_entry(node, @@ -75,8 +75,9 @@ static struct proc_dir_entry *pde_subdir_find(struct proc_dir_entry *dir, static bool pde_subdir_insert(struct proc_dir_entry *dir, struct proc_dir_entry *de) { - struct rb_root *root = &dir->subdir; - struct rb_node **new = &root->rb_node, *parent = NULL; + struct rb_root_cached *root = &dir->subdir; + struct rb_node **new = &root->rb_root.rb_node, *parent = NULL; + bool leftmost = true; /* Figure out where to put new node */ while (*new) { @@ -88,15 +89,16 @@ static bool pde_subdir_insert(struct proc_dir_entry *dir, parent = *new; if (result < 0) new = &(*new)->rb_left; - else if (result > 0) + else if (result > 0) { new = &(*new)->rb_right; - else + leftmost = false; + } else return false; } /* Add new node and rebalance tree. */ rb_link_node(&de->subdir_node, parent, new); - rb_insert_color(&de->subdir_node, root); + rb_insert_color_cached(&de->subdir_node, root, leftmost); return true; } @@ -369,7 +371,7 @@ static struct proc_dir_entry *__proc_create(struct proc_dir_entry **parent, ent->namelen = qstr.len; ent->mode = mode; ent->nlink = nlink; - ent->subdir = RB_ROOT; + ent->subdir = RB_ROOT_CACHED; atomic_set(&ent->count, 1); spin_lock_init(&ent->pde_unload_lock); INIT_LIST_HEAD(&ent->pde_openers); @@ -499,6 +501,14 @@ out: } EXPORT_SYMBOL(proc_create_data); +struct proc_dir_entry *proc_create(const char *name, umode_t mode, + struct proc_dir_entry *parent, + const struct file_operations *proc_fops) +{ + return proc_create_data(name, mode, parent, proc_fops, NULL); +} +EXPORT_SYMBOL(proc_create); + void proc_set_size(struct proc_dir_entry *de, loff_t size) { de->size = size; @@ -545,7 +555,7 @@ void remove_proc_entry(const char *name, struct proc_dir_entry *parent) de = pde_subdir_find(parent, fn, len); if (de) - rb_erase(&de->subdir_node, &parent->subdir); + rb_erase_cached(&de->subdir_node, &parent->subdir); write_unlock(&proc_subdir_lock); if (!de) { WARN(1, "name '%s'\n", name); @@ -582,13 +592,13 @@ int remove_proc_subtree(const char *name, struct proc_dir_entry *parent) write_unlock(&proc_subdir_lock); return -ENOENT; } - rb_erase(&root->subdir_node, &parent->subdir); + rb_erase_cached(&root->subdir_node, &parent->subdir); de = root; while (1) { next = pde_subdir_first(de); if (next) { - rb_erase(&next->subdir_node, &de->subdir); + rb_erase_cached(&next->subdir_node, &de->subdir); de = next; continue; } diff --git a/fs/proc/internal.h b/fs/proc/internal.h index aa2b89071630..a34195e92b20 100644 --- a/fs/proc/internal.h +++ b/fs/proc/internal.h @@ -40,7 +40,7 @@ struct proc_dir_entry { const struct inode_operations *proc_iops; const struct file_operations *proc_fops; struct proc_dir_entry *parent; - struct rb_root subdir; + struct rb_root_cached subdir; struct rb_node subdir_node; void *data; atomic_t count; /* use count */ @@ -269,10 +269,12 @@ extern int proc_remount(struct super_block *, int *, char *); /* * task_[no]mmu.c */ +struct mem_size_stats; struct proc_maps_private { struct inode *inode; struct task_struct *task; struct mm_struct *mm; + struct mem_size_stats *rollup; #ifdef CONFIG_MMU struct vm_area_struct *tail_vma; #endif @@ -288,6 +290,7 @@ extern const struct file_operations proc_tid_maps_operations; extern const struct file_operations proc_pid_numa_maps_operations; extern const struct file_operations proc_tid_numa_maps_operations; extern const struct file_operations proc_pid_smaps_operations; +extern const struct file_operations proc_pid_smaps_rollup_operations; extern const struct file_operations proc_tid_smaps_operations; extern const struct file_operations proc_clear_refs_operations; extern const struct file_operations proc_pagemap_operations; diff --git a/fs/proc/meminfo.c b/fs/proc/meminfo.c index 509a61668d90..cdd979724c74 100644 --- a/fs/proc/meminfo.c +++ b/fs/proc/meminfo.c @@ -80,7 +80,7 @@ static int meminfo_proc_show(struct seq_file *m, void *v) show_val_kb(m, "Active(file): ", pages[LRU_ACTIVE_FILE]); show_val_kb(m, "Inactive(file): ", pages[LRU_INACTIVE_FILE]); show_val_kb(m, "Unevictable: ", pages[LRU_UNEVICTABLE]); - show_val_kb(m, "Mlocked: ", global_page_state(NR_MLOCK)); + show_val_kb(m, "Mlocked: ", global_zone_page_state(NR_MLOCK)); #ifdef CONFIG_HIGHMEM show_val_kb(m, "HighTotal: ", i.totalhigh); @@ -114,9 +114,9 @@ static int meminfo_proc_show(struct seq_file *m, void *v) show_val_kb(m, "SUnreclaim: ", global_node_page_state(NR_SLAB_UNRECLAIMABLE)); seq_printf(m, "KernelStack: %8lu kB\n", - global_page_state(NR_KERNEL_STACK_KB)); + global_zone_page_state(NR_KERNEL_STACK_KB)); show_val_kb(m, "PageTables: ", - global_page_state(NR_PAGETABLE)); + global_zone_page_state(NR_PAGETABLE)); #ifdef CONFIG_QUICKLIST show_val_kb(m, "Quicklists: ", quicklist_total_size()); #endif @@ -124,7 +124,7 @@ static int meminfo_proc_show(struct seq_file *m, void *v) show_val_kb(m, "NFS_Unstable: ", global_node_page_state(NR_UNSTABLE_NFS)); show_val_kb(m, "Bounce: ", - global_page_state(NR_BOUNCE)); + global_zone_page_state(NR_BOUNCE)); show_val_kb(m, "WritebackTmp: ", global_node_page_state(NR_WRITEBACK_TEMP)); show_val_kb(m, "CommitLimit: ", vm_commit_limit()); @@ -151,7 +151,7 @@ static int meminfo_proc_show(struct seq_file *m, void *v) #ifdef CONFIG_CMA show_val_kb(m, "CmaTotal: ", totalcma_pages); show_val_kb(m, "CmaFree: ", - global_page_state(NR_FREE_CMA_PAGES)); + global_zone_page_state(NR_FREE_CMA_PAGES)); #endif hugetlb_report_meminfo(m); diff --git a/fs/proc/proc_net.c b/fs/proc/proc_net.c index d72fc40241d9..a2bf369c923d 100644 --- a/fs/proc/proc_net.c +++ b/fs/proc/proc_net.c @@ -196,7 +196,7 @@ static __net_init int proc_net_ns_init(struct net *net) if (!netd) goto out; - netd->subdir = RB_ROOT; + netd->subdir = RB_ROOT_CACHED; netd->data = net; netd->nlink = 2; netd->namelen = 3; diff --git a/fs/proc/root.c b/fs/proc/root.c index deecb397daa3..926fb27f4ca2 100644 --- a/fs/proc/root.c +++ b/fs/proc/root.c @@ -210,7 +210,7 @@ struct proc_dir_entry proc_root = { .proc_iops = &proc_root_inode_operations, .proc_fops = &proc_root_operations, .parent = &proc_root, - .subdir = RB_ROOT, + .subdir = RB_ROOT_CACHED, .name = "/proc", }; diff --git a/fs/proc/task_mmu.c b/fs/proc/task_mmu.c index fe8f3265e877..7b40e11ede9b 100644 --- a/fs/proc/task_mmu.c +++ b/fs/proc/task_mmu.c @@ -253,6 +253,7 @@ static int proc_map_release(struct inode *inode, struct file *file) if (priv->mm) mmdrop(priv->mm); + kfree(priv->rollup); return seq_release_private(inode, file); } @@ -267,8 +268,7 @@ static int do_maps_open(struct inode *inode, struct file *file, * Indicate if the VMA is a stack for the given task; for * /proc/PID/maps that is the stack of the main task. */ -static int is_stack(struct proc_maps_private *priv, - struct vm_area_struct *vma) +static int is_stack(struct vm_area_struct *vma) { /* * We make no effort to guess what a given thread considers to be @@ -279,12 +279,28 @@ static int is_stack(struct proc_maps_private *priv, vma->vm_end >= vma->vm_mm->start_stack; } +static void show_vma_header_prefix(struct seq_file *m, + unsigned long start, unsigned long end, + vm_flags_t flags, unsigned long long pgoff, + dev_t dev, unsigned long ino) +{ + seq_setwidth(m, 25 + sizeof(void *) * 6 - 1); + seq_printf(m, "%08lx-%08lx %c%c%c%c %08llx %02x:%02x %lu ", + start, + end, + flags & VM_READ ? 'r' : '-', + flags & VM_WRITE ? 'w' : '-', + flags & VM_EXEC ? 'x' : '-', + flags & VM_MAYSHARE ? 's' : 'p', + pgoff, + MAJOR(dev), MINOR(dev), ino); +} + static void show_map_vma(struct seq_file *m, struct vm_area_struct *vma, int is_pid) { struct mm_struct *mm = vma->vm_mm; struct file *file = vma->vm_file; - struct proc_maps_private *priv = m->private; vm_flags_t flags = vma->vm_flags; unsigned long ino = 0; unsigned long long pgoff = 0; @@ -301,17 +317,7 @@ show_map_vma(struct seq_file *m, struct vm_area_struct *vma, int is_pid) start = vma->vm_start; end = vma->vm_end; - - seq_setwidth(m, 25 + sizeof(void *) * 6 - 1); - seq_printf(m, "%08lx-%08lx %c%c%c%c %08llx %02x:%02x %lu ", - start, - end, - flags & VM_READ ? 'r' : '-', - flags & VM_WRITE ? 'w' : '-', - flags & VM_EXEC ? 'x' : '-', - flags & VM_MAYSHARE ? 's' : 'p', - pgoff, - MAJOR(dev), MINOR(dev), ino); + show_vma_header_prefix(m, start, end, flags, pgoff, dev, ino); /* * Print the dentry name for named mappings, and a @@ -342,7 +348,7 @@ show_map_vma(struct seq_file *m, struct vm_area_struct *vma, int is_pid) goto done; } - if (is_stack(priv, vma)) + if (is_stack(vma)) name = "[stack]"; } @@ -430,6 +436,7 @@ const struct file_operations proc_tid_maps_operations = { #ifdef CONFIG_PROC_PAGE_MONITOR struct mem_size_stats { + bool first; unsigned long resident; unsigned long shared_clean; unsigned long shared_dirty; @@ -443,7 +450,9 @@ struct mem_size_stats { unsigned long swap; unsigned long shared_hugetlb; unsigned long private_hugetlb; + unsigned long first_vma_start; u64 pss; + u64 pss_locked; u64 swap_pss; bool check_shmem_swap; }; @@ -538,6 +547,8 @@ static void smaps_pte_entry(pte_t *pte, unsigned long addr, } } else if (is_migration_entry(swpent)) page = migration_entry_to_page(swpent); + else if (is_device_private_entry(swpent)) + page = device_private_entry_to_page(swpent); } else if (unlikely(IS_ENABLED(CONFIG_SHMEM) && mss->check_shmem_swap && pte_none(*pte))) { page = find_get_entry(vma->vm_file->f_mapping, @@ -597,13 +608,14 @@ static int smaps_pte_range(pmd_t *pmd, unsigned long addr, unsigned long end, ptl = pmd_trans_huge_lock(pmd, vma); if (ptl) { - smaps_pmd_entry(pmd, addr, walk); + if (pmd_present(*pmd)) + smaps_pmd_entry(pmd, addr, walk); spin_unlock(ptl); - return 0; + goto out; } if (pmd_trans_unstable(pmd)) - return 0; + goto out; /* * The mmap_sem held all the way back in m_start() is what * keeps khugepaged out of here and from collapsing things @@ -613,6 +625,7 @@ static int smaps_pte_range(pmd_t *pmd, unsigned long addr, unsigned long end, for (; addr != end; pte++, addr += PAGE_SIZE) smaps_pte_entry(pte, addr, walk); pte_unmap_unlock(pte - 1, ptl); +out: cond_resched(); return 0; } @@ -652,6 +665,7 @@ static void show_smap_vma_flags(struct seq_file *m, struct vm_area_struct *vma) [ilog2(VM_NORESERVE)] = "nr", [ilog2(VM_HUGETLB)] = "ht", [ilog2(VM_ARCH_1)] = "ar", + [ilog2(VM_WIPEONFORK)] = "wf", [ilog2(VM_DONTDUMP)] = "dd", #ifdef CONFIG_MEM_SOFT_DIRTY [ilog2(VM_SOFTDIRTY)] = "sd", @@ -700,6 +714,8 @@ static int smaps_hugetlb_range(pte_t *pte, unsigned long hmask, if (is_migration_entry(swpent)) page = migration_entry_to_page(swpent); + else if (is_device_private_entry(swpent)) + page = device_private_entry_to_page(swpent); } if (page) { int mapcount = page_mapcount(page); @@ -719,18 +735,36 @@ void __weak arch_show_smap(struct seq_file *m, struct vm_area_struct *vma) static int show_smap(struct seq_file *m, void *v, int is_pid) { + struct proc_maps_private *priv = m->private; struct vm_area_struct *vma = v; - struct mem_size_stats mss; + struct mem_size_stats mss_stack; + struct mem_size_stats *mss; struct mm_walk smaps_walk = { .pmd_entry = smaps_pte_range, #ifdef CONFIG_HUGETLB_PAGE .hugetlb_entry = smaps_hugetlb_range, #endif .mm = vma->vm_mm, - .private = &mss, }; + int ret = 0; + bool rollup_mode; + bool last_vma; + + if (priv->rollup) { + rollup_mode = true; + mss = priv->rollup; + if (mss->first) { + mss->first_vma_start = vma->vm_start; + mss->first = false; + } + last_vma = !m_next_vma(priv, vma); + } else { + rollup_mode = false; + memset(&mss_stack, 0, sizeof(mss_stack)); + mss = &mss_stack; + } - memset(&mss, 0, sizeof mss); + smaps_walk.private = mss; #ifdef CONFIG_SHMEM if (vma->vm_file && shmem_mapping(vma->vm_file->f_mapping)) { @@ -748,9 +782,9 @@ static int show_smap(struct seq_file *m, void *v, int is_pid) if (!shmem_swapped || (vma->vm_flags & VM_SHARED) || !(vma->vm_flags & VM_WRITE)) { - mss.swap = shmem_swapped; + mss->swap = shmem_swapped; } else { - mss.check_shmem_swap = true; + mss->check_shmem_swap = true; smaps_walk.pte_hole = smaps_pte_hole; } } @@ -758,54 +792,71 @@ static int show_smap(struct seq_file *m, void *v, int is_pid) /* mmap_sem is held in m_start */ walk_page_vma(vma, &smaps_walk); + if (vma->vm_flags & VM_LOCKED) + mss->pss_locked += mss->pss; + + if (!rollup_mode) { + show_map_vma(m, vma, is_pid); + } else if (last_vma) { + show_vma_header_prefix( + m, mss->first_vma_start, vma->vm_end, 0, 0, 0, 0); + seq_pad(m, ' '); + seq_puts(m, "[rollup]\n"); + } else { + ret = SEQ_SKIP; + } - show_map_vma(m, vma, is_pid); - - seq_printf(m, - "Size: %8lu kB\n" - "Rss: %8lu kB\n" - "Pss: %8lu kB\n" - "Shared_Clean: %8lu kB\n" - "Shared_Dirty: %8lu kB\n" - "Private_Clean: %8lu kB\n" - "Private_Dirty: %8lu kB\n" - "Referenced: %8lu kB\n" - "Anonymous: %8lu kB\n" - "LazyFree: %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" - "SwapPss: %8lu kB\n" - "KernelPageSize: %8lu kB\n" - "MMUPageSize: %8lu kB\n" - "Locked: %8lu kB\n", - (vma->vm_end - vma->vm_start) >> 10, - mss.resident >> 10, - (unsigned long)(mss.pss >> (10 + PSS_SHIFT)), - mss.shared_clean >> 10, - mss.shared_dirty >> 10, - mss.private_clean >> 10, - mss.private_dirty >> 10, - mss.referenced >> 10, - mss.anonymous >> 10, - mss.lazyfree >> 10, - mss.anonymous_thp >> 10, - mss.shmem_thp >> 10, - mss.shared_hugetlb >> 10, - mss.private_hugetlb >> 10, - mss.swap >> 10, - (unsigned long)(mss.swap_pss >> (10 + PSS_SHIFT)), - vma_kernel_pagesize(vma) >> 10, - vma_mmu_pagesize(vma) >> 10, - (vma->vm_flags & VM_LOCKED) ? - (unsigned long)(mss.pss >> (10 + PSS_SHIFT)) : 0); - - arch_show_smap(m, vma); - show_smap_vma_flags(m, vma); + if (!rollup_mode) + seq_printf(m, + "Size: %8lu kB\n" + "KernelPageSize: %8lu kB\n" + "MMUPageSize: %8lu kB\n", + (vma->vm_end - vma->vm_start) >> 10, + vma_kernel_pagesize(vma) >> 10, + vma_mmu_pagesize(vma) >> 10); + + + if (!rollup_mode || last_vma) + seq_printf(m, + "Rss: %8lu kB\n" + "Pss: %8lu kB\n" + "Shared_Clean: %8lu kB\n" + "Shared_Dirty: %8lu kB\n" + "Private_Clean: %8lu kB\n" + "Private_Dirty: %8lu kB\n" + "Referenced: %8lu kB\n" + "Anonymous: %8lu kB\n" + "LazyFree: %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" + "SwapPss: %8lu kB\n" + "Locked: %8lu kB\n", + mss->resident >> 10, + (unsigned long)(mss->pss >> (10 + PSS_SHIFT)), + mss->shared_clean >> 10, + mss->shared_dirty >> 10, + mss->private_clean >> 10, + mss->private_dirty >> 10, + mss->referenced >> 10, + mss->anonymous >> 10, + mss->lazyfree >> 10, + mss->anonymous_thp >> 10, + mss->shmem_thp >> 10, + mss->shared_hugetlb >> 10, + mss->private_hugetlb >> 10, + mss->swap >> 10, + (unsigned long)(mss->swap_pss >> (10 + PSS_SHIFT)), + (unsigned long)(mss->pss >> (10 + PSS_SHIFT))); + + if (!rollup_mode) { + arch_show_smap(m, vma); + show_smap_vma_flags(m, vma); + } m_cache_vma(m, vma); - return 0; + return ret; } static int show_pid_smap(struct seq_file *m, void *v) @@ -837,6 +888,25 @@ static int pid_smaps_open(struct inode *inode, struct file *file) return do_maps_open(inode, file, &proc_pid_smaps_op); } +static int pid_smaps_rollup_open(struct inode *inode, struct file *file) +{ + struct seq_file *seq; + struct proc_maps_private *priv; + int ret = do_maps_open(inode, file, &proc_pid_smaps_op); + + if (ret < 0) + return ret; + seq = file->private_data; + priv = seq->private; + priv->rollup = kzalloc(sizeof(*priv->rollup), GFP_KERNEL); + if (!priv->rollup) { + proc_map_release(inode, file); + return -ENOMEM; + } + priv->rollup->first = true; + return 0; +} + static int tid_smaps_open(struct inode *inode, struct file *file) { return do_maps_open(inode, file, &proc_tid_smaps_op); @@ -849,6 +919,13 @@ const struct file_operations proc_pid_smaps_operations = { .release = proc_map_release, }; +const struct file_operations proc_pid_smaps_rollup_operations = { + .open = pid_smaps_rollup_open, + .read = seq_read, + .llseek = seq_lseek, + .release = proc_map_release, +}; + const struct file_operations proc_tid_smaps_operations = { .open = tid_smaps_open, .read = seq_read, @@ -904,17 +981,22 @@ static inline void clear_soft_dirty_pmd(struct vm_area_struct *vma, { pmd_t pmd = *pmdp; - /* See comment in change_huge_pmd() */ - pmdp_invalidate(vma, addr, pmdp); - if (pmd_dirty(*pmdp)) - pmd = pmd_mkdirty(pmd); - if (pmd_young(*pmdp)) - pmd = pmd_mkyoung(pmd); - - pmd = pmd_wrprotect(pmd); - pmd = pmd_clear_soft_dirty(pmd); - - set_pmd_at(vma->vm_mm, addr, pmdp, pmd); + if (pmd_present(pmd)) { + /* See comment in change_huge_pmd() */ + pmdp_invalidate(vma, addr, pmdp); + if (pmd_dirty(*pmdp)) + pmd = pmd_mkdirty(pmd); + if (pmd_young(*pmdp)) + pmd = pmd_mkyoung(pmd); + + pmd = pmd_wrprotect(pmd); + pmd = pmd_clear_soft_dirty(pmd); + + set_pmd_at(vma->vm_mm, addr, pmdp, pmd); + } else if (is_migration_entry(pmd_to_swp_entry(pmd))) { + pmd = pmd_swp_clear_soft_dirty(pmd); + set_pmd_at(vma->vm_mm, addr, pmdp, pmd); + } } #else static inline void clear_soft_dirty_pmd(struct vm_area_struct *vma, @@ -939,6 +1021,9 @@ static int clear_refs_pte_range(pmd_t *pmd, unsigned long addr, goto out; } + if (!pmd_present(*pmd)) + goto out; + page = pmd_page(*pmd); /* Clear accessed and referenced bits. */ @@ -1181,7 +1266,7 @@ static pagemap_entry_t pte_to_pagemap_entry(struct pagemapread *pm, if (pm->show_pfn) frame = pte_pfn(pte); flags |= PM_PRESENT; - page = vm_normal_page(vma, addr, pte); + page = _vm_normal_page(vma, addr, pte, true); if (pte_soft_dirty(pte)) flags |= PM_SOFT_DIRTY; } else if (is_swap_pte(pte)) { @@ -1194,6 +1279,9 @@ static pagemap_entry_t pte_to_pagemap_entry(struct pagemapread *pm, flags |= PM_SWAP; if (is_migration_entry(entry)) page = migration_entry_to_page(entry); + + if (is_device_private_entry(entry)) + page = device_private_entry_to_page(entry); } if (page && !PageAnon(page)) @@ -1220,27 +1308,33 @@ static int pagemap_pmd_range(pmd_t *pmdp, unsigned long addr, unsigned long end, if (ptl) { u64 flags = 0, frame = 0; pmd_t pmd = *pmdp; + struct page *page = NULL; if ((vma->vm_flags & VM_SOFTDIRTY) || pmd_soft_dirty(pmd)) flags |= PM_SOFT_DIRTY; - /* - * Currently pmd for thp is always present because thp - * can not be swapped-out, migrated, or HWPOISONed - * (split in such cases instead.) - * This if-check is just to prepare for future implementation. - */ if (pmd_present(pmd)) { - struct page *page = pmd_page(pmd); - - if (page_mapcount(page) == 1) - flags |= PM_MMAP_EXCLUSIVE; + page = pmd_page(pmd); flags |= PM_PRESENT; if (pm->show_pfn) frame = pmd_pfn(pmd) + ((addr & ~PMD_MASK) >> PAGE_SHIFT); } +#ifdef CONFIG_ARCH_ENABLE_THP_MIGRATION + else if (is_swap_pmd(pmd)) { + swp_entry_t entry = pmd_to_swp_entry(pmd); + + frame = swp_type(entry) | + (swp_offset(entry) << MAX_SWAPFILES_SHIFT); + flags |= PM_SWAP; + VM_BUG_ON(!is_pmd_migration_entry(pmd)); + page = migration_entry_to_page(entry); + } +#endif + + if (page && page_mapcount(page) == 1) + flags |= PM_MMAP_EXCLUSIVE; for (; addr != end; addr += PAGE_SIZE) { pagemap_entry_t pme = make_pme(frame, flags); @@ -1673,7 +1767,7 @@ static int show_numa_map(struct seq_file *m, void *v, int is_pid) seq_file_path(m, file, "\n\t= "); } else if (vma->vm_start <= mm->brk && vma->vm_end >= mm->start_brk) { seq_puts(m, " heap"); - } else if (is_stack(proc_priv, vma)) { + } else if (is_stack(vma)) { seq_puts(m, " stack"); } diff --git a/fs/proc/task_nommu.c b/fs/proc/task_nommu.c index 23266694db11..dea90b566a6e 100644 --- a/fs/proc/task_nommu.c +++ b/fs/proc/task_nommu.c @@ -125,8 +125,7 @@ unsigned long task_statm(struct mm_struct *mm, return size; } -static int is_stack(struct proc_maps_private *priv, - struct vm_area_struct *vma) +static int is_stack(struct vm_area_struct *vma) { struct mm_struct *mm = vma->vm_mm; @@ -178,7 +177,7 @@ static int nommu_vma_show(struct seq_file *m, struct vm_area_struct *vma, if (file) { seq_pad(m, ' '); seq_file_path(m, file, ""); - } else if (mm && is_stack(priv, vma)) { + } else if (mm && is_stack(vma)) { seq_pad(m, ' '); seq_printf(m, "[stack]"); } diff --git a/fs/pstore/inode.c b/fs/pstore/inode.c index fefd22611cf6..d814723fb27d 100644 --- a/fs/pstore/inode.c +++ b/fs/pstore/inode.c @@ -36,7 +36,6 @@ #include <linux/slab.h> #include <linux/spinlock.h> #include <linux/uaccess.h> -#include <linux/syslog.h> #include "internal.h" @@ -132,18 +131,6 @@ static const struct seq_operations pstore_ftrace_seq_ops = { .show = pstore_ftrace_seq_show, }; -static int pstore_check_syslog_permissions(struct pstore_private *ps) -{ - switch (ps->record->type) { - case PSTORE_TYPE_DMESG: - case PSTORE_TYPE_CONSOLE: - return check_syslog_permissions(SYSLOG_ACTION_READ_ALL, - SYSLOG_FROM_READER); - default: - return 0; - } -} - static ssize_t pstore_file_read(struct file *file, char __user *userbuf, size_t count, loff_t *ppos) { @@ -163,10 +150,6 @@ static int pstore_file_open(struct inode *inode, struct file *file) int err; const struct seq_operations *sops = NULL; - err = pstore_check_syslog_permissions(ps); - if (err) - return err; - if (ps->record->type == PSTORE_TYPE_FTRACE) sops = &pstore_ftrace_seq_ops; @@ -204,11 +187,6 @@ static int pstore_unlink(struct inode *dir, struct dentry *dentry) { struct pstore_private *p = d_inode(dentry)->i_private; struct pstore_record *record = p->record; - int err; - - err = pstore_check_syslog_permissions(p); - if (err) - return err; if (!record->psi->erase) return -EPERM; @@ -471,7 +449,7 @@ static int pstore_fill_super(struct super_block *sb, void *data, int silent) inode = pstore_get_inode(sb); if (inode) { - inode->i_mode = S_IFDIR | 0755; + inode->i_mode = S_IFDIR | 0750; inode->i_op = &pstore_dir_inode_operations; inode->i_fop = &simple_dir_operations; inc_nlink(inode); diff --git a/fs/quota/dquot.c b/fs/quota/dquot.c index 53a17496c5c5..8381db9db6d9 100644 --- a/fs/quota/dquot.c +++ b/fs/quota/dquot.c @@ -82,16 +82,19 @@ #include <linux/uaccess.h> /* - * There are three quota SMP locks. dq_list_lock protects all lists with quotas - * and quota formats. - * dq_data_lock protects data from dq_dqb and also mem_dqinfo structures and - * also guards consistency of dquot->dq_dqb with inode->i_blocks, i_bytes. - * i_blocks and i_bytes updates itself are guarded by i_lock acquired directly - * in inode_add_bytes() and inode_sub_bytes(). dq_state_lock protects - * modifications of quota state (on quotaon and quotaoff) and readers who care - * about latest values take it as well. + * There are five quota SMP locks: + * * dq_list_lock protects all lists with quotas and quota formats. + * * dquot->dq_dqb_lock protects data from dq_dqb + * * inode->i_lock protects inode->i_blocks, i_bytes and also guards + * consistency of dquot->dq_dqb with inode->i_blocks, i_bytes so that + * dquot_transfer() can stabilize amount it transfers + * * dq_data_lock protects mem_dqinfo structures and modifications of dquot + * pointers in the inode + * * dq_state_lock protects modifications of quota state (on quotaon and + * quotaoff) and readers who care about latest values take it as well. * - * The spinlock ordering is hence: dq_data_lock > dq_list_lock > i_lock, + * The spinlock ordering is hence: + * dq_data_lock > dq_list_lock > i_lock > dquot->dq_dqb_lock, * dq_list_lock > dq_state_lock * * Note that some things (eg. sb pointer, type, id) doesn't change during @@ -110,17 +113,14 @@ * sure they cannot race with quotaon which first sets S_NOQUOTA flag and * then drops all pointers to dquots from an inode. * - * Each dquot has its dq_lock mutex. Locked dquots might not be referenced - * from inodes (dquot_alloc_space() and such don't check the dq_lock). - * Currently dquot is locked only when it is being read to memory (or space for - * it is being allocated) on the first dqget() and when it is being released on - * the last dqput(). The allocation and release oparations are serialized by - * the dq_lock and by checking the use count in dquot_release(). Write - * operations on dquots don't hold dq_lock as they copy data under dq_data_lock - * spinlock to internal buffers before writing. + * Each dquot has its dq_lock mutex. Dquot is locked when it is being read to + * memory (or space for it is being allocated) on the first dqget(), when it is + * being written out, and when it is being released on the last dqput(). The + * allocation and release operations are serialized by the dq_lock and by + * checking the use count in dquot_release(). * * Lock ordering (including related VFS locks) is the following: - * s_umount > i_mutex > journal_lock > dquot->dq_lock > dqio_mutex + * s_umount > i_mutex > journal_lock > dquot->dq_lock > dqio_sem */ static __cacheline_aligned_in_smp DEFINE_SPINLOCK(dq_list_lock); @@ -129,6 +129,8 @@ __cacheline_aligned_in_smp DEFINE_SPINLOCK(dq_data_lock); EXPORT_SYMBOL(dq_data_lock); DEFINE_STATIC_SRCU(dquot_srcu); +static DECLARE_WAIT_QUEUE_HEAD(dquot_ref_wq); + void __quota_error(struct super_block *sb, const char *func, const char *fmt, ...) { @@ -247,6 +249,7 @@ struct dqstats dqstats; EXPORT_SYMBOL(dqstats); static qsize_t inode_get_rsv_space(struct inode *inode); +static qsize_t __inode_get_rsv_space(struct inode *inode); static int __dquot_initialize(struct inode *inode, int type); static inline unsigned int @@ -342,6 +345,12 @@ int dquot_mark_dquot_dirty(struct dquot *dquot) { int ret = 1; + if (!test_bit(DQ_ACTIVE_B, &dquot->dq_flags)) + return 0; + + if (sb_dqopt(dquot->dq_sb)->flags & DQUOT_NOLIST_DIRTY) + return test_and_set_bit(DQ_MOD_B, &dquot->dq_flags); + /* If quota is dirty already, we don't have to acquire dq_list_lock */ if (test_bit(DQ_MOD_B, &dquot->dq_flags)) return 1; @@ -381,18 +390,26 @@ static inline void dqput_all(struct dquot **dquot) dqput(dquot[cnt]); } -/* This function needs dq_list_lock */ static inline int clear_dquot_dirty(struct dquot *dquot) { - if (!test_and_clear_bit(DQ_MOD_B, &dquot->dq_flags)) + if (sb_dqopt(dquot->dq_sb)->flags & DQUOT_NOLIST_DIRTY) + return test_and_clear_bit(DQ_MOD_B, &dquot->dq_flags); + + spin_lock(&dq_list_lock); + if (!test_and_clear_bit(DQ_MOD_B, &dquot->dq_flags)) { + spin_unlock(&dq_list_lock); return 0; + } list_del_init(&dquot->dq_dirty); + spin_unlock(&dq_list_lock); return 1; } void mark_info_dirty(struct super_block *sb, int type) { - set_bit(DQF_INFO_DIRTY_B, &sb_dqopt(sb)->info[type].dqi_flags); + spin_lock(&dq_data_lock); + sb_dqopt(sb)->info[type].dqi_flags |= DQF_INFO_DIRTY; + spin_unlock(&dq_data_lock); } EXPORT_SYMBOL(mark_info_dirty); @@ -406,7 +423,6 @@ int dquot_acquire(struct dquot *dquot) struct quota_info *dqopt = sb_dqopt(dquot->dq_sb); mutex_lock(&dquot->dq_lock); - mutex_lock(&dqopt->dqio_mutex); if (!test_bit(DQ_READ_B, &dquot->dq_flags)) ret = dqopt->ops[dquot->dq_id.type]->read_dqblk(dquot); if (ret < 0) @@ -436,7 +452,6 @@ int dquot_acquire(struct dquot *dquot) smp_mb__before_atomic(); set_bit(DQ_ACTIVE_B, &dquot->dq_flags); out_iolock: - mutex_unlock(&dqopt->dqio_mutex); mutex_unlock(&dquot->dq_lock); return ret; } @@ -450,21 +465,17 @@ int dquot_commit(struct dquot *dquot) int ret = 0; struct quota_info *dqopt = sb_dqopt(dquot->dq_sb); - mutex_lock(&dqopt->dqio_mutex); - spin_lock(&dq_list_lock); - if (!clear_dquot_dirty(dquot)) { - spin_unlock(&dq_list_lock); - goto out_sem; - } - spin_unlock(&dq_list_lock); + mutex_lock(&dquot->dq_lock); + if (!clear_dquot_dirty(dquot)) + goto out_lock; /* Inactive dquot can be only if there was error during read/init * => we have better not writing it */ if (test_bit(DQ_ACTIVE_B, &dquot->dq_flags)) ret = dqopt->ops[dquot->dq_id.type]->commit_dqblk(dquot); else ret = -EIO; -out_sem: - mutex_unlock(&dqopt->dqio_mutex); +out_lock: + mutex_unlock(&dquot->dq_lock); return ret; } EXPORT_SYMBOL(dquot_commit); @@ -481,7 +492,6 @@ int dquot_release(struct dquot *dquot) /* Check whether we are not racing with some other dqget() */ if (atomic_read(&dquot->dq_count) > 1) goto out_dqlock; - mutex_lock(&dqopt->dqio_mutex); if (dqopt->ops[dquot->dq_id.type]->release_dqblk) { ret = dqopt->ops[dquot->dq_id.type]->release_dqblk(dquot); /* Write the info */ @@ -493,7 +503,6 @@ int dquot_release(struct dquot *dquot) ret = ret2; } clear_bit(DQ_ACTIVE_B, &dquot->dq_flags); - mutex_unlock(&dqopt->dqio_mutex); out_dqlock: mutex_unlock(&dquot->dq_lock); return ret; @@ -530,22 +539,18 @@ restart: continue; /* Wait for dquot users */ if (atomic_read(&dquot->dq_count)) { - DEFINE_WAIT(wait); - dqgrab(dquot); - prepare_to_wait(&dquot->dq_wait_unused, &wait, - TASK_UNINTERRUPTIBLE); spin_unlock(&dq_list_lock); - /* Once dqput() wakes us up, we know it's time to free + /* + * Once dqput() wakes us up, we know it's time to free * the dquot. * IMPORTANT: we rely on the fact that there is always * at most one process waiting for dquot to free. * Otherwise dq_count would be > 1 and we would never * wake up. */ - if (atomic_read(&dquot->dq_count) > 1) - schedule(); - finish_wait(&dquot->dq_wait_unused, &wait); + wait_event(dquot_ref_wq, + atomic_read(&dquot->dq_count) == 1); dqput(dquot); /* At this moment dquot() need not exist (it could be * reclaimed by prune_dqcache(). Hence we must @@ -629,11 +634,9 @@ int dquot_writeback_dquots(struct super_block *sb, int type) while (!list_empty(dirty)) { dquot = list_first_entry(dirty, struct dquot, dq_dirty); - /* Dirty and inactive can be only bad dquot... */ - if (!test_bit(DQ_ACTIVE_B, &dquot->dq_flags)) { - clear_dquot_dirty(dquot); - continue; - } + + WARN_ON(!test_bit(DQ_ACTIVE_B, &dquot->dq_flags)); + /* Now we have active dquot from which someone is * holding reference so we can safely just increase * use count */ @@ -759,12 +762,12 @@ we_slept: /* Releasing dquot during quotaoff phase? */ if (!sb_has_quota_active(dquot->dq_sb, dquot->dq_id.type) && atomic_read(&dquot->dq_count) == 1) - wake_up(&dquot->dq_wait_unused); + wake_up(&dquot_ref_wq); spin_unlock(&dq_list_lock); return; } /* Need to release dquot? */ - if (test_bit(DQ_ACTIVE_B, &dquot->dq_flags) && dquot_dirty(dquot)) { + if (dquot_dirty(dquot)) { spin_unlock(&dq_list_lock); /* Commit dquot before releasing */ ret = dquot->dq_sb->dq_op->write_dquot(dquot); @@ -776,14 +779,10 @@ we_slept: * We clear dirty bit anyway, so that we avoid * infinite loop here */ - spin_lock(&dq_list_lock); clear_dquot_dirty(dquot); - spin_unlock(&dq_list_lock); } goto we_slept; } - /* Clear flag in case dquot was inactive (something bad happened) */ - clear_dquot_dirty(dquot); if (test_bit(DQ_ACTIVE_B, &dquot->dq_flags)) { spin_unlock(&dq_list_lock); dquot->dq_sb->dq_op->release_dquot(dquot); @@ -818,10 +817,10 @@ static struct dquot *get_empty_dquot(struct super_block *sb, int type) INIT_LIST_HEAD(&dquot->dq_inuse); INIT_HLIST_NODE(&dquot->dq_hash); INIT_LIST_HEAD(&dquot->dq_dirty); - init_waitqueue_head(&dquot->dq_wait_unused); dquot->dq_sb = sb; dquot->dq_id = make_kqid_invalid(type); atomic_set(&dquot->dq_count, 1); + spin_lock_init(&dquot->dq_dqb_lock); return dquot; } @@ -1079,42 +1078,6 @@ static void drop_dquot_ref(struct super_block *sb, int type) } } -static inline void dquot_incr_inodes(struct dquot *dquot, qsize_t number) -{ - dquot->dq_dqb.dqb_curinodes += number; -} - -static inline void dquot_incr_space(struct dquot *dquot, qsize_t number) -{ - dquot->dq_dqb.dqb_curspace += number; -} - -static inline void dquot_resv_space(struct dquot *dquot, qsize_t number) -{ - dquot->dq_dqb.dqb_rsvspace += number; -} - -/* - * Claim reserved quota space - */ -static void dquot_claim_reserved_space(struct dquot *dquot, qsize_t number) -{ - if (dquot->dq_dqb.dqb_rsvspace < number) { - WARN_ON_ONCE(1); - number = dquot->dq_dqb.dqb_rsvspace; - } - dquot->dq_dqb.dqb_curspace += number; - dquot->dq_dqb.dqb_rsvspace -= number; -} - -static void dquot_reclaim_reserved_space(struct dquot *dquot, qsize_t number) -{ - if (WARN_ON_ONCE(dquot->dq_dqb.dqb_curspace < number)) - number = dquot->dq_dqb.dqb_curspace; - dquot->dq_dqb.dqb_rsvspace += number; - dquot->dq_dqb.dqb_curspace -= number; -} - static inline void dquot_free_reserved_space(struct dquot *dquot, qsize_t number) { @@ -1124,6 +1087,10 @@ void dquot_free_reserved_space(struct dquot *dquot, qsize_t number) WARN_ON_ONCE(1); dquot->dq_dqb.dqb_rsvspace = 0; } + if (dquot->dq_dqb.dqb_curspace + dquot->dq_dqb.dqb_rsvspace <= + dquot->dq_dqb.dqb_bsoftlimit) + dquot->dq_dqb.dqb_btime = (time64_t) 0; + clear_bit(DQ_BLKS_B, &dquot->dq_flags); } static void dquot_decr_inodes(struct dquot *dquot, qsize_t number) @@ -1145,7 +1112,8 @@ static void dquot_decr_space(struct dquot *dquot, qsize_t number) dquot->dq_dqb.dqb_curspace -= number; else dquot->dq_dqb.dqb_curspace = 0; - if (dquot->dq_dqb.dqb_curspace <= dquot->dq_dqb.dqb_bsoftlimit) + if (dquot->dq_dqb.dqb_curspace + dquot->dq_dqb.dqb_rsvspace <= + dquot->dq_dqb.dqb_bsoftlimit) dquot->dq_dqb.dqb_btime = (time64_t) 0; clear_bit(DQ_BLKS_B, &dquot->dq_flags); } @@ -1273,21 +1241,24 @@ static int ignore_hardlimit(struct dquot *dquot) !(info->dqi_flags & DQF_ROOT_SQUASH)); } -/* needs dq_data_lock */ -static int check_idq(struct dquot *dquot, qsize_t inodes, - struct dquot_warn *warn) +static int dquot_add_inodes(struct dquot *dquot, qsize_t inodes, + struct dquot_warn *warn) { - qsize_t newinodes = dquot->dq_dqb.dqb_curinodes + inodes; + qsize_t newinodes; + int ret = 0; + spin_lock(&dquot->dq_dqb_lock); + newinodes = dquot->dq_dqb.dqb_curinodes + inodes; if (!sb_has_quota_limits_enabled(dquot->dq_sb, dquot->dq_id.type) || test_bit(DQ_FAKE_B, &dquot->dq_flags)) - return 0; + goto add; if (dquot->dq_dqb.dqb_ihardlimit && newinodes > dquot->dq_dqb.dqb_ihardlimit && !ignore_hardlimit(dquot)) { prepare_warning(warn, dquot, QUOTA_NL_IHARDWARN); - return -EDQUOT; + ret = -EDQUOT; + goto out; } if (dquot->dq_dqb.dqb_isoftlimit && @@ -1296,7 +1267,8 @@ static int check_idq(struct dquot *dquot, qsize_t inodes, ktime_get_real_seconds() >= dquot->dq_dqb.dqb_itime && !ignore_hardlimit(dquot)) { prepare_warning(warn, dquot, QUOTA_NL_ISOFTLONGWARN); - return -EDQUOT; + ret = -EDQUOT; + goto out; } if (dquot->dq_dqb.dqb_isoftlimit && @@ -1306,30 +1278,40 @@ static int check_idq(struct dquot *dquot, qsize_t inodes, dquot->dq_dqb.dqb_itime = ktime_get_real_seconds() + sb_dqopt(dquot->dq_sb)->info[dquot->dq_id.type].dqi_igrace; } +add: + dquot->dq_dqb.dqb_curinodes = newinodes; - return 0; +out: + spin_unlock(&dquot->dq_dqb_lock); + return ret; } -/* needs dq_data_lock */ -static int check_bdq(struct dquot *dquot, qsize_t space, int prealloc, - struct dquot_warn *warn) +static int dquot_add_space(struct dquot *dquot, qsize_t space, + qsize_t rsv_space, unsigned int flags, + struct dquot_warn *warn) { qsize_t tspace; struct super_block *sb = dquot->dq_sb; + int ret = 0; + spin_lock(&dquot->dq_dqb_lock); if (!sb_has_quota_limits_enabled(sb, dquot->dq_id.type) || test_bit(DQ_FAKE_B, &dquot->dq_flags)) - return 0; + goto add; tspace = dquot->dq_dqb.dqb_curspace + dquot->dq_dqb.dqb_rsvspace - + space; + + space + rsv_space; + + if (flags & DQUOT_SPACE_NOFAIL) + goto add; if (dquot->dq_dqb.dqb_bhardlimit && tspace > dquot->dq_dqb.dqb_bhardlimit && !ignore_hardlimit(dquot)) { - if (!prealloc) + if (flags & DQUOT_SPACE_WARN) prepare_warning(warn, dquot, QUOTA_NL_BHARDWARN); - return -EDQUOT; + ret = -EDQUOT; + goto out; } if (dquot->dq_dqb.dqb_bsoftlimit && @@ -1337,28 +1319,34 @@ static int check_bdq(struct dquot *dquot, qsize_t space, int prealloc, dquot->dq_dqb.dqb_btime && ktime_get_real_seconds() >= dquot->dq_dqb.dqb_btime && !ignore_hardlimit(dquot)) { - if (!prealloc) + if (flags & DQUOT_SPACE_WARN) prepare_warning(warn, dquot, QUOTA_NL_BSOFTLONGWARN); - return -EDQUOT; + ret = -EDQUOT; + goto out; } if (dquot->dq_dqb.dqb_bsoftlimit && tspace > dquot->dq_dqb.dqb_bsoftlimit && dquot->dq_dqb.dqb_btime == 0) { - if (!prealloc) { + if (flags & DQUOT_SPACE_WARN) { prepare_warning(warn, dquot, QUOTA_NL_BSOFTWARN); dquot->dq_dqb.dqb_btime = ktime_get_real_seconds() + sb_dqopt(sb)->info[dquot->dq_id.type].dqi_bgrace; - } - else + } else { /* * We don't allow preallocation to exceed softlimit so exceeding will * be always printed */ - return -EDQUOT; + ret = -EDQUOT; + goto out; + } } - - return 0; +add: + dquot->dq_dqb.dqb_rsvspace += rsv_space; + dquot->dq_dqb.dqb_curspace += space; +out: + spin_unlock(&dquot->dq_dqb_lock); + return ret; } static int info_idq_free(struct dquot *dquot, qsize_t inodes) @@ -1381,14 +1369,18 @@ static int info_idq_free(struct dquot *dquot, qsize_t inodes) static int info_bdq_free(struct dquot *dquot, qsize_t space) { + qsize_t tspace; + + tspace = dquot->dq_dqb.dqb_curspace + dquot->dq_dqb.dqb_rsvspace; + if (test_bit(DQ_FAKE_B, &dquot->dq_flags) || - dquot->dq_dqb.dqb_curspace <= dquot->dq_dqb.dqb_bsoftlimit) + tspace <= dquot->dq_dqb.dqb_bsoftlimit) return QUOTA_NL_NOWARN; - if (dquot->dq_dqb.dqb_curspace - space <= dquot->dq_dqb.dqb_bsoftlimit) + if (tspace - space <= dquot->dq_dqb.dqb_bsoftlimit) return QUOTA_NL_BSOFTBELOW; - if (dquot->dq_dqb.dqb_curspace >= dquot->dq_dqb.dqb_bhardlimit && - dquot->dq_dqb.dqb_curspace - space < dquot->dq_dqb.dqb_bhardlimit) + if (tspace >= dquot->dq_dqb.dqb_bhardlimit && + tspace - space < dquot->dq_dqb.dqb_bhardlimit) return QUOTA_NL_BHARDBELOW; return QUOTA_NL_NOWARN; } @@ -1493,8 +1485,15 @@ static int __dquot_initialize(struct inode *inode, int type) * did a write before quota was turned on */ rsv = inode_get_rsv_space(inode); - if (unlikely(rsv)) - dquot_resv_space(dquots[cnt], rsv); + if (unlikely(rsv)) { + spin_lock(&inode->i_lock); + /* Get reservation again under proper lock */ + rsv = __inode_get_rsv_space(inode); + spin_lock(&dquots[cnt]->dq_dqb_lock); + dquots[cnt]->dq_dqb.dqb_rsvspace += rsv; + spin_unlock(&dquots[cnt]->dq_dqb_lock); + spin_unlock(&inode->i_lock); + } } } out_lock: @@ -1589,39 +1588,12 @@ static qsize_t *inode_reserved_space(struct inode * inode) return inode->i_sb->dq_op->get_reserved_space(inode); } -void inode_add_rsv_space(struct inode *inode, qsize_t number) -{ - spin_lock(&inode->i_lock); - *inode_reserved_space(inode) += number; - spin_unlock(&inode->i_lock); -} -EXPORT_SYMBOL(inode_add_rsv_space); - -void inode_claim_rsv_space(struct inode *inode, qsize_t number) +static qsize_t __inode_get_rsv_space(struct inode *inode) { - spin_lock(&inode->i_lock); - *inode_reserved_space(inode) -= number; - __inode_add_bytes(inode, number); - spin_unlock(&inode->i_lock); -} -EXPORT_SYMBOL(inode_claim_rsv_space); - -void inode_reclaim_rsv_space(struct inode *inode, qsize_t number) -{ - spin_lock(&inode->i_lock); - *inode_reserved_space(inode) += number; - __inode_sub_bytes(inode, number); - spin_unlock(&inode->i_lock); -} -EXPORT_SYMBOL(inode_reclaim_rsv_space); - -void inode_sub_rsv_space(struct inode *inode, qsize_t number) -{ - spin_lock(&inode->i_lock); - *inode_reserved_space(inode) -= number; - spin_unlock(&inode->i_lock); + if (!inode->i_sb->dq_op->get_reserved_space) + return 0; + return *inode_reserved_space(inode); } -EXPORT_SYMBOL(inode_sub_rsv_space); static qsize_t inode_get_rsv_space(struct inode *inode) { @@ -1630,28 +1602,11 @@ static qsize_t inode_get_rsv_space(struct inode *inode) if (!inode->i_sb->dq_op->get_reserved_space) return 0; spin_lock(&inode->i_lock); - ret = *inode_reserved_space(inode); + ret = __inode_get_rsv_space(inode); spin_unlock(&inode->i_lock); return ret; } -static void inode_incr_space(struct inode *inode, qsize_t number, - int reserve) -{ - if (reserve) - inode_add_rsv_space(inode, number); - else - inode_add_bytes(inode, number); -} - -static void inode_decr_space(struct inode *inode, qsize_t number, int reserve) -{ - if (reserve) - inode_sub_rsv_space(inode, number); - else - inode_sub_bytes(inode, number); -} - /* * This functions updates i_blocks+i_bytes fields and quota information * (together with appropriate checks). @@ -1673,7 +1628,13 @@ int __dquot_alloc_space(struct inode *inode, qsize_t number, int flags) struct dquot **dquots; if (!dquot_active(inode)) { - inode_incr_space(inode, number, reserve); + if (reserve) { + spin_lock(&inode->i_lock); + *inode_reserved_space(inode) += number; + spin_unlock(&inode->i_lock); + } else { + inode_add_bytes(inode, number); + } goto out; } @@ -1682,27 +1643,41 @@ int __dquot_alloc_space(struct inode *inode, qsize_t number, int flags) dquots = i_dquot(inode); index = srcu_read_lock(&dquot_srcu); - spin_lock(&dq_data_lock); + spin_lock(&inode->i_lock); for (cnt = 0; cnt < MAXQUOTAS; cnt++) { if (!dquots[cnt]) continue; - ret = check_bdq(dquots[cnt], number, - !(flags & DQUOT_SPACE_WARN), &warn[cnt]); - if (ret && !(flags & DQUOT_SPACE_NOFAIL)) { - spin_unlock(&dq_data_lock); + if (flags & DQUOT_SPACE_RESERVE) { + ret = dquot_add_space(dquots[cnt], 0, number, flags, + &warn[cnt]); + } else { + ret = dquot_add_space(dquots[cnt], number, 0, flags, + &warn[cnt]); + } + if (ret) { + /* Back out changes we already did */ + for (cnt--; cnt >= 0; cnt--) { + if (!dquots[cnt]) + continue; + spin_lock(&dquots[cnt]->dq_dqb_lock); + if (flags & DQUOT_SPACE_RESERVE) { + dquots[cnt]->dq_dqb.dqb_rsvspace -= + number; + } else { + dquots[cnt]->dq_dqb.dqb_curspace -= + number; + } + spin_unlock(&dquots[cnt]->dq_dqb_lock); + } + spin_unlock(&inode->i_lock); goto out_flush_warn; } } - for (cnt = 0; cnt < MAXQUOTAS; cnt++) { - if (!dquots[cnt]) - continue; - if (reserve) - dquot_resv_space(dquots[cnt], number); - else - dquot_incr_space(dquots[cnt], number); - } - inode_incr_space(inode, number, reserve); - spin_unlock(&dq_data_lock); + if (reserve) + *inode_reserved_space(inode) += number; + else + __inode_add_bytes(inode, number); + spin_unlock(&inode->i_lock); if (reserve) goto out_flush_warn; @@ -1731,23 +1706,26 @@ int dquot_alloc_inode(struct inode *inode) dquots = i_dquot(inode); index = srcu_read_lock(&dquot_srcu); - spin_lock(&dq_data_lock); + spin_lock(&inode->i_lock); for (cnt = 0; cnt < MAXQUOTAS; cnt++) { if (!dquots[cnt]) continue; - ret = check_idq(dquots[cnt], 1, &warn[cnt]); - if (ret) + ret = dquot_add_inodes(dquots[cnt], 1, &warn[cnt]); + if (ret) { + for (cnt--; cnt >= 0; cnt--) { + if (!dquots[cnt]) + continue; + /* Back out changes we already did */ + spin_lock(&dquots[cnt]->dq_dqb_lock); + dquots[cnt]->dq_dqb.dqb_curinodes--; + spin_unlock(&dquots[cnt]->dq_dqb_lock); + } goto warn_put_all; - } - - for (cnt = 0; cnt < MAXQUOTAS; cnt++) { - if (!dquots[cnt]) - continue; - dquot_incr_inodes(dquots[cnt], 1); + } } warn_put_all: - spin_unlock(&dq_data_lock); + spin_unlock(&inode->i_lock); if (ret == 0) mark_all_dquot_dirty(dquots); srcu_read_unlock(&dquot_srcu, index); @@ -1765,21 +1743,33 @@ int dquot_claim_space_nodirty(struct inode *inode, qsize_t number) int cnt, index; if (!dquot_active(inode)) { - inode_claim_rsv_space(inode, number); + spin_lock(&inode->i_lock); + *inode_reserved_space(inode) -= number; + __inode_add_bytes(inode, number); + spin_unlock(&inode->i_lock); return 0; } dquots = i_dquot(inode); index = srcu_read_lock(&dquot_srcu); - spin_lock(&dq_data_lock); + spin_lock(&inode->i_lock); /* Claim reserved quotas to allocated quotas */ for (cnt = 0; cnt < MAXQUOTAS; cnt++) { - if (dquots[cnt]) - dquot_claim_reserved_space(dquots[cnt], number); + if (dquots[cnt]) { + struct dquot *dquot = dquots[cnt]; + + spin_lock(&dquot->dq_dqb_lock); + if (WARN_ON_ONCE(dquot->dq_dqb.dqb_rsvspace < number)) + number = dquot->dq_dqb.dqb_rsvspace; + dquot->dq_dqb.dqb_curspace += number; + dquot->dq_dqb.dqb_rsvspace -= number; + spin_unlock(&dquot->dq_dqb_lock); + } } /* Update inode bytes */ - inode_claim_rsv_space(inode, number); - spin_unlock(&dq_data_lock); + *inode_reserved_space(inode) -= number; + __inode_add_bytes(inode, number); + spin_unlock(&inode->i_lock); mark_all_dquot_dirty(dquots); srcu_read_unlock(&dquot_srcu, index); return 0; @@ -1795,21 +1785,33 @@ void dquot_reclaim_space_nodirty(struct inode *inode, qsize_t number) int cnt, index; if (!dquot_active(inode)) { - inode_reclaim_rsv_space(inode, number); + spin_lock(&inode->i_lock); + *inode_reserved_space(inode) += number; + __inode_sub_bytes(inode, number); + spin_unlock(&inode->i_lock); return; } dquots = i_dquot(inode); index = srcu_read_lock(&dquot_srcu); - spin_lock(&dq_data_lock); + spin_lock(&inode->i_lock); /* Claim reserved quotas to allocated quotas */ for (cnt = 0; cnt < MAXQUOTAS; cnt++) { - if (dquots[cnt]) - dquot_reclaim_reserved_space(dquots[cnt], number); + if (dquots[cnt]) { + struct dquot *dquot = dquots[cnt]; + + spin_lock(&dquot->dq_dqb_lock); + if (WARN_ON_ONCE(dquot->dq_dqb.dqb_curspace < number)) + number = dquot->dq_dqb.dqb_curspace; + dquot->dq_dqb.dqb_rsvspace += number; + dquot->dq_dqb.dqb_curspace -= number; + spin_unlock(&dquot->dq_dqb_lock); + } } /* Update inode bytes */ - inode_reclaim_rsv_space(inode, number); - spin_unlock(&dq_data_lock); + *inode_reserved_space(inode) += number; + __inode_sub_bytes(inode, number); + spin_unlock(&inode->i_lock); mark_all_dquot_dirty(dquots); srcu_read_unlock(&dquot_srcu, index); return; @@ -1827,19 +1829,26 @@ void __dquot_free_space(struct inode *inode, qsize_t number, int flags) int reserve = flags & DQUOT_SPACE_RESERVE, index; if (!dquot_active(inode)) { - inode_decr_space(inode, number, reserve); + if (reserve) { + spin_lock(&inode->i_lock); + *inode_reserved_space(inode) -= number; + spin_unlock(&inode->i_lock); + } else { + inode_sub_bytes(inode, number); + } return; } dquots = i_dquot(inode); index = srcu_read_lock(&dquot_srcu); - spin_lock(&dq_data_lock); + spin_lock(&inode->i_lock); for (cnt = 0; cnt < MAXQUOTAS; cnt++) { int wtype; warn[cnt].w_type = QUOTA_NL_NOWARN; if (!dquots[cnt]) continue; + spin_lock(&dquots[cnt]->dq_dqb_lock); wtype = info_bdq_free(dquots[cnt], number); if (wtype != QUOTA_NL_NOWARN) prepare_warning(&warn[cnt], dquots[cnt], wtype); @@ -1847,9 +1856,13 @@ void __dquot_free_space(struct inode *inode, qsize_t number, int flags) dquot_free_reserved_space(dquots[cnt], number); else dquot_decr_space(dquots[cnt], number); + spin_unlock(&dquots[cnt]->dq_dqb_lock); } - inode_decr_space(inode, number, reserve); - spin_unlock(&dq_data_lock); + if (reserve) + *inode_reserved_space(inode) -= number; + else + __inode_sub_bytes(inode, number); + spin_unlock(&inode->i_lock); if (reserve) goto out_unlock; @@ -1875,19 +1888,21 @@ void dquot_free_inode(struct inode *inode) dquots = i_dquot(inode); index = srcu_read_lock(&dquot_srcu); - spin_lock(&dq_data_lock); + spin_lock(&inode->i_lock); for (cnt = 0; cnt < MAXQUOTAS; cnt++) { int wtype; warn[cnt].w_type = QUOTA_NL_NOWARN; if (!dquots[cnt]) continue; + spin_lock(&dquots[cnt]->dq_dqb_lock); wtype = info_idq_free(dquots[cnt], 1); if (wtype != QUOTA_NL_NOWARN) prepare_warning(&warn[cnt], dquots[cnt], wtype); dquot_decr_inodes(dquots[cnt], 1); + spin_unlock(&dquots[cnt]->dq_dqb_lock); } - spin_unlock(&dq_data_lock); + spin_unlock(&inode->i_lock); mark_all_dquot_dirty(dquots); srcu_read_unlock(&dquot_srcu, index); flush_warnings(warn); @@ -1908,7 +1923,7 @@ EXPORT_SYMBOL(dquot_free_inode); */ int __dquot_transfer(struct inode *inode, struct dquot **transfer_to) { - qsize_t space, cur_space; + qsize_t cur_space; qsize_t rsv_space = 0; qsize_t inode_usage = 1; struct dquot *transfer_from[MAXQUOTAS] = {}; @@ -1935,14 +1950,18 @@ int __dquot_transfer(struct inode *inode, struct dquot **transfer_to) } spin_lock(&dq_data_lock); + spin_lock(&inode->i_lock); if (IS_NOQUOTA(inode)) { /* File without quota accounting? */ + spin_unlock(&inode->i_lock); spin_unlock(&dq_data_lock); return 0; } - cur_space = inode_get_bytes(inode); - rsv_space = inode_get_rsv_space(inode); - space = cur_space + rsv_space; - /* Build the transfer_from list and check the limits */ + cur_space = __inode_get_bytes(inode); + rsv_space = __inode_get_rsv_space(inode); + /* + * Build the transfer_from list, check limits, and update usage in + * the target structures. + */ for (cnt = 0; cnt < MAXQUOTAS; cnt++) { /* * Skip changes for same uid or gid or for turned off quota-type. @@ -1954,28 +1973,33 @@ int __dquot_transfer(struct inode *inode, struct dquot **transfer_to) continue; is_valid[cnt] = 1; transfer_from[cnt] = i_dquot(inode)[cnt]; - ret = check_idq(transfer_to[cnt], inode_usage, &warn_to[cnt]); + ret = dquot_add_inodes(transfer_to[cnt], inode_usage, + &warn_to[cnt]); if (ret) goto over_quota; - ret = check_bdq(transfer_to[cnt], space, 0, &warn_to[cnt]); - if (ret) + ret = dquot_add_space(transfer_to[cnt], cur_space, rsv_space, 0, + &warn_to[cnt]); + if (ret) { + dquot_decr_inodes(transfer_to[cnt], inode_usage); goto over_quota; + } } - /* - * Finally perform the needed transfer from transfer_from to transfer_to - */ + /* Decrease usage for source structures and update quota pointers */ for (cnt = 0; cnt < MAXQUOTAS; cnt++) { if (!is_valid[cnt]) continue; /* Due to IO error we might not have transfer_from[] structure */ if (transfer_from[cnt]) { int wtype; + + spin_lock(&transfer_from[cnt]->dq_dqb_lock); wtype = info_idq_free(transfer_from[cnt], inode_usage); if (wtype != QUOTA_NL_NOWARN) prepare_warning(&warn_from_inodes[cnt], transfer_from[cnt], wtype); - wtype = info_bdq_free(transfer_from[cnt], space); + wtype = info_bdq_free(transfer_from[cnt], + cur_space + rsv_space); if (wtype != QUOTA_NL_NOWARN) prepare_warning(&warn_from_space[cnt], transfer_from[cnt], wtype); @@ -1983,14 +2007,11 @@ int __dquot_transfer(struct inode *inode, struct dquot **transfer_to) dquot_decr_space(transfer_from[cnt], cur_space); dquot_free_reserved_space(transfer_from[cnt], rsv_space); + spin_unlock(&transfer_from[cnt]->dq_dqb_lock); } - - dquot_incr_inodes(transfer_to[cnt], inode_usage); - dquot_incr_space(transfer_to[cnt], cur_space); - dquot_resv_space(transfer_to[cnt], rsv_space); - i_dquot(inode)[cnt] = transfer_to[cnt]; } + spin_unlock(&inode->i_lock); spin_unlock(&dq_data_lock); mark_all_dquot_dirty(transfer_from); @@ -2004,6 +2025,17 @@ int __dquot_transfer(struct inode *inode, struct dquot **transfer_to) transfer_to[cnt] = transfer_from[cnt]; return 0; over_quota: + /* Back out changes we already did */ + for (cnt--; cnt >= 0; cnt--) { + if (!is_valid[cnt]) + continue; + spin_lock(&transfer_to[cnt]->dq_dqb_lock); + dquot_decr_inodes(transfer_to[cnt], inode_usage); + dquot_decr_space(transfer_to[cnt], cur_space); + dquot_free_reserved_space(transfer_to[cnt], rsv_space); + spin_unlock(&transfer_to[cnt]->dq_dqb_lock); + } + spin_unlock(&inode->i_lock); spin_unlock(&dq_data_lock); flush_warnings(warn_to); return ret; @@ -2057,29 +2089,21 @@ EXPORT_SYMBOL(dquot_transfer); */ int dquot_commit_info(struct super_block *sb, int type) { - int ret; struct quota_info *dqopt = sb_dqopt(sb); - mutex_lock(&dqopt->dqio_mutex); - ret = dqopt->ops[type]->write_file_info(sb, type); - mutex_unlock(&dqopt->dqio_mutex); - return ret; + return dqopt->ops[type]->write_file_info(sb, type); } EXPORT_SYMBOL(dquot_commit_info); int dquot_get_next_id(struct super_block *sb, struct kqid *qid) { struct quota_info *dqopt = sb_dqopt(sb); - int err; if (!sb_has_quota_active(sb, qid->type)) return -ESRCH; if (!dqopt->ops[qid->type]->get_next_id) return -ENOSYS; - mutex_lock(&dqopt->dqio_mutex); - err = dqopt->ops[qid->type]->get_next_id(sb, qid); - mutex_unlock(&dqopt->dqio_mutex); - return err; + return dqopt->ops[qid->type]->get_next_id(sb, qid); } EXPORT_SYMBOL(dquot_get_next_id); @@ -2328,15 +2352,14 @@ static int vfs_load_quota_inode(struct inode *inode, int type, int format_id, dqopt->info[type].dqi_format = fmt; dqopt->info[type].dqi_fmt_id = format_id; INIT_LIST_HEAD(&dqopt->info[type].dqi_dirty_list); - mutex_lock(&dqopt->dqio_mutex); error = dqopt->ops[type]->read_file_info(sb, type); - if (error < 0) { - mutex_unlock(&dqopt->dqio_mutex); + if (error < 0) goto out_file_init; - } - if (dqopt->flags & DQUOT_QUOTA_SYS_FILE) + if (dqopt->flags & DQUOT_QUOTA_SYS_FILE) { + spin_lock(&dq_data_lock); dqopt->info[type].dqi_flags |= DQF_SYS_FILE; - mutex_unlock(&dqopt->dqio_mutex); + spin_unlock(&dq_data_lock); + } spin_lock(&dq_state_lock); dqopt->flags |= dquot_state_flag(flags, type); spin_unlock(&dq_state_lock); @@ -2563,7 +2586,7 @@ static void do_get_dqblk(struct dquot *dquot, struct qc_dqblk *di) struct mem_dqblk *dm = &dquot->dq_dqb; memset(di, 0, sizeof(*di)); - spin_lock(&dq_data_lock); + spin_lock(&dquot->dq_dqb_lock); di->d_spc_hardlimit = dm->dqb_bhardlimit; di->d_spc_softlimit = dm->dqb_bsoftlimit; di->d_ino_hardlimit = dm->dqb_ihardlimit; @@ -2572,7 +2595,7 @@ static void do_get_dqblk(struct dquot *dquot, struct qc_dqblk *di) di->d_ino_count = dm->dqb_curinodes; di->d_spc_timer = dm->dqb_btime; di->d_ino_timer = dm->dqb_itime; - spin_unlock(&dq_data_lock); + spin_unlock(&dquot->dq_dqb_lock); } int dquot_get_dqblk(struct super_block *sb, struct kqid qid, @@ -2636,7 +2659,7 @@ static int do_set_dqblk(struct dquot *dquot, struct qc_dqblk *di) (di->d_ino_hardlimit > dqi->dqi_max_ino_limit))) return -ERANGE; - spin_lock(&dq_data_lock); + spin_lock(&dquot->dq_dqb_lock); if (di->d_fieldmask & QC_SPACE) { dm->dqb_curspace = di->d_space - dm->dqb_rsvspace; check_blim = 1; @@ -2681,7 +2704,7 @@ static int do_set_dqblk(struct dquot *dquot, struct qc_dqblk *di) if (check_blim) { if (!dm->dqb_bsoftlimit || - dm->dqb_curspace < dm->dqb_bsoftlimit) { + dm->dqb_curspace + dm->dqb_rsvspace < dm->dqb_bsoftlimit) { dm->dqb_btime = 0; clear_bit(DQ_BLKS_B, &dquot->dq_flags); } else if (!(di->d_fieldmask & QC_SPC_TIMER)) @@ -2702,7 +2725,7 @@ static int do_set_dqblk(struct dquot *dquot, struct qc_dqblk *di) clear_bit(DQ_FAKE_B, &dquot->dq_flags); else set_bit(DQ_FAKE_B, &dquot->dq_flags); - spin_unlock(&dq_data_lock); + spin_unlock(&dquot->dq_dqb_lock); mark_dquot_dirty(dquot); return 0; diff --git a/fs/quota/quota_tree.c b/fs/quota/quota_tree.c index 0738972e8d3f..bb3f59bcfcf5 100644 --- a/fs/quota/quota_tree.c +++ b/fs/quota/quota_tree.c @@ -379,7 +379,7 @@ int qtree_write_dquot(struct qtree_mem_dqinfo *info, struct dquot *dquot) if (!ddquot) return -ENOMEM; - /* dq_off is guarded by dqio_mutex */ + /* dq_off is guarded by dqio_sem */ if (!dquot->dq_off) { ret = dq_insert_tree(info, dquot); if (ret < 0) { @@ -389,9 +389,9 @@ int qtree_write_dquot(struct qtree_mem_dqinfo *info, struct dquot *dquot) return ret; } } - spin_lock(&dq_data_lock); + spin_lock(&dquot->dq_dqb_lock); info->dqi_ops->mem2disk_dqblk(ddquot, dquot); - spin_unlock(&dq_data_lock); + spin_unlock(&dquot->dq_dqb_lock); ret = sb->s_op->quota_write(sb, type, ddquot, info->dqi_entry_size, dquot->dq_off); if (ret != info->dqi_entry_size) { @@ -649,14 +649,14 @@ int qtree_read_dquot(struct qtree_mem_dqinfo *info, struct dquot *dquot) kfree(ddquot); goto out; } - spin_lock(&dq_data_lock); + spin_lock(&dquot->dq_dqb_lock); info->dqi_ops->disk2mem_dqblk(dquot, ddquot); if (!dquot->dq_dqb.dqb_bhardlimit && !dquot->dq_dqb.dqb_bsoftlimit && !dquot->dq_dqb.dqb_ihardlimit && !dquot->dq_dqb.dqb_isoftlimit) set_bit(DQ_FAKE_B, &dquot->dq_flags); - spin_unlock(&dq_data_lock); + spin_unlock(&dquot->dq_dqb_lock); kfree(ddquot); out: dqstats_inc(DQST_READS); diff --git a/fs/quota/quota_v1.c b/fs/quota/quota_v1.c index 8fe79beced5c..7ac5298aba70 100644 --- a/fs/quota/quota_v1.c +++ b/fs/quota/quota_v1.c @@ -56,8 +56,9 @@ static int v1_read_dqblk(struct dquot *dquot) { int type = dquot->dq_id.type; struct v1_disk_dqblk dqblk; + struct quota_info *dqopt = sb_dqopt(dquot->dq_sb); - if (!sb_dqopt(dquot->dq_sb)->files[type]) + if (!dqopt->files[type]) return -EINVAL; /* Set structure to 0s in case read fails/is after end of file */ @@ -160,6 +161,7 @@ static int v1_read_file_info(struct super_block *sb, int type) struct v1_disk_dqblk dqblk; int ret; + down_read(&dqopt->dqio_sem); ret = sb->s_op->quota_read(sb, type, (char *)&dqblk, sizeof(struct v1_disk_dqblk), v1_dqoff(0)); if (ret != sizeof(struct v1_disk_dqblk)) { @@ -176,6 +178,7 @@ static int v1_read_file_info(struct super_block *sb, int type) dqopt->info[type].dqi_bgrace = dqblk.dqb_btime ? dqblk.dqb_btime : MAX_DQ_TIME; out: + up_read(&dqopt->dqio_sem); return ret; } @@ -185,7 +188,7 @@ static int v1_write_file_info(struct super_block *sb, int type) struct v1_disk_dqblk dqblk; int ret; - dqopt->info[type].dqi_flags &= ~DQF_INFO_DIRTY; + down_write(&dqopt->dqio_sem); ret = sb->s_op->quota_read(sb, type, (char *)&dqblk, sizeof(struct v1_disk_dqblk), v1_dqoff(0)); if (ret != sizeof(struct v1_disk_dqblk)) { @@ -193,8 +196,11 @@ static int v1_write_file_info(struct super_block *sb, int type) ret = -EIO; goto out; } + spin_lock(&dq_data_lock); + dqopt->info[type].dqi_flags &= ~DQF_INFO_DIRTY; dqblk.dqb_itime = dqopt->info[type].dqi_igrace; dqblk.dqb_btime = dqopt->info[type].dqi_bgrace; + spin_unlock(&dq_data_lock); ret = sb->s_op->quota_write(sb, type, (char *)&dqblk, sizeof(struct v1_disk_dqblk), v1_dqoff(0)); if (ret == sizeof(struct v1_disk_dqblk)) @@ -202,6 +208,7 @@ static int v1_write_file_info(struct super_block *sb, int type) else if (ret > 0) ret = -EIO; out: + up_write(&dqopt->dqio_sem); return ret; } diff --git a/fs/quota/quota_v2.c b/fs/quota/quota_v2.c index ca71bf881ad1..c0187cda2c1e 100644 --- a/fs/quota/quota_v2.c +++ b/fs/quota/quota_v2.c @@ -65,9 +65,11 @@ static int v2_read_header(struct super_block *sb, int type, if (size != sizeof(struct v2_disk_dqheader)) { quota_error(sb, "Failed header read: expected=%zd got=%zd", sizeof(struct v2_disk_dqheader), size); - return 0; + if (size < 0) + return size; + return -EIO; } - return 1; + return 0; } /* Check whether given file is really vfsv0 quotafile */ @@ -77,7 +79,7 @@ static int v2_check_quota_file(struct super_block *sb, int type) static const uint quota_magics[] = V2_INITQMAGICS; static const uint quota_versions[] = V2_INITQVERSIONS; - if (!v2_read_header(sb, type, &dqhead)) + if (v2_read_header(sb, type, &dqhead)) return 0; if (le32_to_cpu(dqhead.dqh_magic) != quota_magics[type] || le32_to_cpu(dqhead.dqh_version) > quota_versions[type]) @@ -90,29 +92,38 @@ static int v2_read_file_info(struct super_block *sb, int type) { struct v2_disk_dqinfo dinfo; struct v2_disk_dqheader dqhead; - struct mem_dqinfo *info = sb_dqinfo(sb, type); + struct quota_info *dqopt = sb_dqopt(sb); + struct mem_dqinfo *info = &dqopt->info[type]; struct qtree_mem_dqinfo *qinfo; ssize_t size; unsigned int version; + int ret; - if (!v2_read_header(sb, type, &dqhead)) - return -1; + down_read(&dqopt->dqio_sem); + ret = v2_read_header(sb, type, &dqhead); + if (ret < 0) + goto out; version = le32_to_cpu(dqhead.dqh_version); if ((info->dqi_fmt_id == QFMT_VFS_V0 && version != 0) || - (info->dqi_fmt_id == QFMT_VFS_V1 && version != 1)) - return -1; + (info->dqi_fmt_id == QFMT_VFS_V1 && version != 1)) { + ret = -EINVAL; + goto out; + } size = sb->s_op->quota_read(sb, type, (char *)&dinfo, sizeof(struct v2_disk_dqinfo), V2_DQINFOOFF); if (size != sizeof(struct v2_disk_dqinfo)) { quota_error(sb, "Can't read info structure"); - return -1; + if (size < 0) + ret = size; + else + ret = -EIO; + goto out; } info->dqi_priv = kmalloc(sizeof(struct qtree_mem_dqinfo), GFP_NOFS); if (!info->dqi_priv) { - printk(KERN_WARNING - "Not enough memory for quota information structure.\n"); - return -ENOMEM; + ret = -ENOMEM; + goto out; } qinfo = info->dqi_priv; if (version == 0) { @@ -147,17 +158,22 @@ static int v2_read_file_info(struct super_block *sb, int type) qinfo->dqi_entry_size = sizeof(struct v2r1_disk_dqblk); qinfo->dqi_ops = &v2r1_qtree_ops; } - return 0; + ret = 0; +out: + up_read(&dqopt->dqio_sem); + return ret; } /* Write information header to quota file */ static int v2_write_file_info(struct super_block *sb, int type) { struct v2_disk_dqinfo dinfo; - struct mem_dqinfo *info = sb_dqinfo(sb, type); + struct quota_info *dqopt = sb_dqopt(sb); + struct mem_dqinfo *info = &dqopt->info[type]; struct qtree_mem_dqinfo *qinfo = info->dqi_priv; ssize_t size; + down_write(&dqopt->dqio_sem); spin_lock(&dq_data_lock); info->dqi_flags &= ~DQF_INFO_DIRTY; dinfo.dqi_bgrace = cpu_to_le32(info->dqi_bgrace); @@ -170,6 +186,7 @@ static int v2_write_file_info(struct super_block *sb, int type) dinfo.dqi_free_entry = cpu_to_le32(qinfo->dqi_free_entry); size = sb->s_op->quota_write(sb, type, (char *)&dinfo, sizeof(struct v2_disk_dqinfo), V2_DQINFOOFF); + up_write(&dqopt->dqio_sem); if (size != sizeof(struct v2_disk_dqinfo)) { quota_error(sb, "Can't write info structure"); return -1; @@ -285,17 +302,51 @@ static int v2r1_is_id(void *dp, struct dquot *dquot) static int v2_read_dquot(struct dquot *dquot) { - return qtree_read_dquot(sb_dqinfo(dquot->dq_sb, dquot->dq_id.type)->dqi_priv, dquot); + struct quota_info *dqopt = sb_dqopt(dquot->dq_sb); + int ret; + + down_read(&dqopt->dqio_sem); + ret = qtree_read_dquot( + sb_dqinfo(dquot->dq_sb, dquot->dq_id.type)->dqi_priv, + dquot); + up_read(&dqopt->dqio_sem); + return ret; } static int v2_write_dquot(struct dquot *dquot) { - return qtree_write_dquot(sb_dqinfo(dquot->dq_sb, dquot->dq_id.type)->dqi_priv, dquot); + struct quota_info *dqopt = sb_dqopt(dquot->dq_sb); + int ret; + bool alloc = false; + + /* + * If space for dquot is already allocated, we don't need any + * protection as we'll only overwrite the place of dquot. We are + * still protected by concurrent writes of the same dquot by + * dquot->dq_lock. + */ + if (!dquot->dq_off) { + alloc = true; + down_write(&dqopt->dqio_sem); + } + ret = qtree_write_dquot( + sb_dqinfo(dquot->dq_sb, dquot->dq_id.type)->dqi_priv, + dquot); + if (alloc) + up_write(&dqopt->dqio_sem); + return ret; } static int v2_release_dquot(struct dquot *dquot) { - return qtree_release_dquot(sb_dqinfo(dquot->dq_sb, dquot->dq_id.type)->dqi_priv, dquot); + struct quota_info *dqopt = sb_dqopt(dquot->dq_sb); + int ret; + + down_write(&dqopt->dqio_sem); + ret = qtree_release_dquot(sb_dqinfo(dquot->dq_sb, dquot->dq_id.type)->dqi_priv, dquot); + up_write(&dqopt->dqio_sem); + + return ret; } static int v2_free_file_info(struct super_block *sb, int type) @@ -306,7 +357,13 @@ static int v2_free_file_info(struct super_block *sb, int type) static int v2_get_next_id(struct super_block *sb, struct kqid *qid) { - return qtree_get_next_id(sb_dqinfo(sb, qid->type)->dqi_priv, qid); + struct quota_info *dqopt = sb_dqopt(sb); + int ret; + + down_read(&dqopt->dqio_sem); + ret = qtree_get_next_id(sb_dqinfo(sb, qid->type)->dqi_priv, qid); + up_read(&dqopt->dqio_sem); + return ret; } static const struct quota_format_ops v2_format_ops = { diff --git a/fs/ramfs/file-nommu.c b/fs/ramfs/file-nommu.c index 2ef7ce75c062..3ac1f2387083 100644 --- a/fs/ramfs/file-nommu.c +++ b/fs/ramfs/file-nommu.c @@ -228,7 +228,7 @@ static unsigned long ramfs_nommu_get_unmapped_area(struct file *file, if (!pages) goto out_free; - nr = find_get_pages(inode->i_mapping, pgoff, lpages, pages); + nr = find_get_pages(inode->i_mapping, &pgoff, lpages, pages); if (nr != lpages) goto out_free_pages; /* leave if some pages were missing */ diff --git a/fs/read_write.c b/fs/read_write.c index 0cc7033aa413..61b58c7b6531 100644 --- a/fs/read_write.c +++ b/fs/read_write.c @@ -33,7 +33,7 @@ const struct file_operations generic_ro_fops = { EXPORT_SYMBOL(generic_ro_fops); -static inline int unsigned_offsets(struct file *file) +static inline bool unsigned_offsets(struct file *file) { return file->f_mode & FMODE_UNSIGNED_OFFSET; } @@ -633,7 +633,7 @@ unsigned long iov_shorten(struct iovec *iov, unsigned long nr_segs, size_t to) EXPORT_SYMBOL(iov_shorten); static ssize_t do_iter_readv_writev(struct file *filp, struct iov_iter *iter, - loff_t *ppos, int type, int flags) + loff_t *ppos, int type, rwf_t flags) { struct kiocb kiocb; ssize_t ret; @@ -655,7 +655,7 @@ static ssize_t do_iter_readv_writev(struct file *filp, struct iov_iter *iter, /* Do it by hand, with file-ops */ static ssize_t do_loop_readv_writev(struct file *filp, struct iov_iter *iter, - loff_t *ppos, int type, int flags) + loff_t *ppos, int type, rwf_t flags) { ssize_t ret = 0; @@ -871,7 +871,7 @@ out: #endif static ssize_t do_iter_read(struct file *file, struct iov_iter *iter, - loff_t *pos, int flags) + loff_t *pos, rwf_t flags) { size_t tot_len; ssize_t ret = 0; @@ -899,7 +899,7 @@ out: } ssize_t vfs_iter_read(struct file *file, struct iov_iter *iter, loff_t *ppos, - int flags) + rwf_t flags) { if (!file->f_op->read_iter) return -EINVAL; @@ -908,7 +908,7 @@ ssize_t vfs_iter_read(struct file *file, struct iov_iter *iter, loff_t *ppos, EXPORT_SYMBOL(vfs_iter_read); static ssize_t do_iter_write(struct file *file, struct iov_iter *iter, - loff_t *pos, int flags) + loff_t *pos, rwf_t flags) { size_t tot_len; ssize_t ret = 0; @@ -935,7 +935,7 @@ static ssize_t do_iter_write(struct file *file, struct iov_iter *iter, } ssize_t vfs_iter_write(struct file *file, struct iov_iter *iter, loff_t *ppos, - int flags) + rwf_t flags) { if (!file->f_op->write_iter) return -EINVAL; @@ -944,7 +944,7 @@ ssize_t vfs_iter_write(struct file *file, struct iov_iter *iter, loff_t *ppos, EXPORT_SYMBOL(vfs_iter_write); ssize_t vfs_readv(struct file *file, const struct iovec __user *vec, - unsigned long vlen, loff_t *pos, int flags) + unsigned long vlen, loff_t *pos, rwf_t flags) { struct iovec iovstack[UIO_FASTIOV]; struct iovec *iov = iovstack; @@ -962,7 +962,7 @@ ssize_t vfs_readv(struct file *file, const struct iovec __user *vec, EXPORT_SYMBOL(vfs_readv); ssize_t vfs_writev(struct file *file, const struct iovec __user *vec, - unsigned long vlen, loff_t *pos, int flags) + unsigned long vlen, loff_t *pos, rwf_t flags) { struct iovec iovstack[UIO_FASTIOV]; struct iovec *iov = iovstack; @@ -981,7 +981,7 @@ ssize_t vfs_writev(struct file *file, const struct iovec __user *vec, EXPORT_SYMBOL(vfs_writev); static ssize_t do_readv(unsigned long fd, const struct iovec __user *vec, - unsigned long vlen, int flags) + unsigned long vlen, rwf_t flags) { struct fd f = fdget_pos(fd); ssize_t ret = -EBADF; @@ -1001,7 +1001,7 @@ static ssize_t do_readv(unsigned long fd, const struct iovec __user *vec, } static ssize_t do_writev(unsigned long fd, const struct iovec __user *vec, - unsigned long vlen, int flags) + unsigned long vlen, rwf_t flags) { struct fd f = fdget_pos(fd); ssize_t ret = -EBADF; @@ -1027,7 +1027,7 @@ static inline loff_t pos_from_hilo(unsigned long high, unsigned long low) } static ssize_t do_preadv(unsigned long fd, const struct iovec __user *vec, - unsigned long vlen, loff_t pos, int flags) + unsigned long vlen, loff_t pos, rwf_t flags) { struct fd f; ssize_t ret = -EBADF; @@ -1050,7 +1050,7 @@ static ssize_t do_preadv(unsigned long fd, const struct iovec __user *vec, } static ssize_t do_pwritev(unsigned long fd, const struct iovec __user *vec, - unsigned long vlen, loff_t pos, int flags) + unsigned long vlen, loff_t pos, rwf_t flags) { struct fd f; ssize_t ret = -EBADF; @@ -1094,7 +1094,7 @@ SYSCALL_DEFINE5(preadv, unsigned long, fd, const struct iovec __user *, vec, SYSCALL_DEFINE6(preadv2, unsigned long, fd, const struct iovec __user *, vec, unsigned long, vlen, unsigned long, pos_l, unsigned long, pos_h, - int, flags) + rwf_t, flags) { loff_t pos = pos_from_hilo(pos_h, pos_l); @@ -1114,7 +1114,7 @@ SYSCALL_DEFINE5(pwritev, unsigned long, fd, const struct iovec __user *, vec, SYSCALL_DEFINE6(pwritev2, unsigned long, fd, const struct iovec __user *, vec, unsigned long, vlen, unsigned long, pos_l, unsigned long, pos_h, - int, flags) + rwf_t, flags) { loff_t pos = pos_from_hilo(pos_h, pos_l); @@ -1127,7 +1127,7 @@ SYSCALL_DEFINE6(pwritev2, unsigned long, fd, const struct iovec __user *, vec, #ifdef CONFIG_COMPAT static size_t compat_readv(struct file *file, const struct compat_iovec __user *vec, - unsigned long vlen, loff_t *pos, int flags) + unsigned long vlen, loff_t *pos, rwf_t flags) { struct iovec iovstack[UIO_FASTIOV]; struct iovec *iov = iovstack; @@ -1147,7 +1147,7 @@ static size_t compat_readv(struct file *file, static size_t do_compat_readv(compat_ulong_t fd, const struct compat_iovec __user *vec, - compat_ulong_t vlen, int flags) + compat_ulong_t vlen, rwf_t flags) { struct fd f = fdget_pos(fd); ssize_t ret; @@ -1173,7 +1173,7 @@ COMPAT_SYSCALL_DEFINE3(readv, compat_ulong_t, fd, static long do_compat_preadv64(unsigned long fd, const struct compat_iovec __user *vec, - unsigned long vlen, loff_t pos, int flags) + unsigned long vlen, loff_t pos, rwf_t flags) { struct fd f; ssize_t ret; @@ -1211,7 +1211,7 @@ COMPAT_SYSCALL_DEFINE5(preadv, compat_ulong_t, fd, #ifdef __ARCH_WANT_COMPAT_SYS_PREADV64V2 COMPAT_SYSCALL_DEFINE5(preadv64v2, unsigned long, fd, const struct compat_iovec __user *,vec, - unsigned long, vlen, loff_t, pos, int, flags) + unsigned long, vlen, loff_t, pos, rwf_t, flags) { return do_compat_preadv64(fd, vec, vlen, pos, flags); } @@ -1220,7 +1220,7 @@ COMPAT_SYSCALL_DEFINE5(preadv64v2, unsigned long, fd, COMPAT_SYSCALL_DEFINE6(preadv2, compat_ulong_t, fd, const struct compat_iovec __user *,vec, compat_ulong_t, vlen, u32, pos_low, u32, pos_high, - int, flags) + rwf_t, flags) { loff_t pos = ((loff_t)pos_high << 32) | pos_low; @@ -1232,7 +1232,7 @@ COMPAT_SYSCALL_DEFINE6(preadv2, compat_ulong_t, fd, static size_t compat_writev(struct file *file, const struct compat_iovec __user *vec, - unsigned long vlen, loff_t *pos, int flags) + unsigned long vlen, loff_t *pos, rwf_t flags) { struct iovec iovstack[UIO_FASTIOV]; struct iovec *iov = iovstack; @@ -1254,7 +1254,7 @@ static size_t compat_writev(struct file *file, static size_t do_compat_writev(compat_ulong_t fd, const struct compat_iovec __user* vec, - compat_ulong_t vlen, int flags) + compat_ulong_t vlen, rwf_t flags) { struct fd f = fdget_pos(fd); ssize_t ret; @@ -1279,7 +1279,7 @@ COMPAT_SYSCALL_DEFINE3(writev, compat_ulong_t, fd, static long do_compat_pwritev64(unsigned long fd, const struct compat_iovec __user *vec, - unsigned long vlen, loff_t pos, int flags) + unsigned long vlen, loff_t pos, rwf_t flags) { struct fd f; ssize_t ret; @@ -1317,7 +1317,7 @@ COMPAT_SYSCALL_DEFINE5(pwritev, compat_ulong_t, fd, #ifdef __ARCH_WANT_COMPAT_SYS_PWRITEV64V2 COMPAT_SYSCALL_DEFINE5(pwritev64v2, unsigned long, fd, const struct compat_iovec __user *,vec, - unsigned long, vlen, loff_t, pos, int, flags) + unsigned long, vlen, loff_t, pos, rwf_t, flags) { return do_compat_pwritev64(fd, vec, vlen, pos, flags); } @@ -1325,7 +1325,7 @@ COMPAT_SYSCALL_DEFINE5(pwritev64v2, unsigned long, fd, COMPAT_SYSCALL_DEFINE6(pwritev2, compat_ulong_t, fd, const struct compat_iovec __user *,vec, - compat_ulong_t, vlen, u32, pos_low, u32, pos_high, int, flags) + compat_ulong_t, vlen, u32, pos_low, u32, pos_high, rwf_t, flags) { loff_t pos = ((loff_t)pos_high << 32) | pos_low; diff --git a/fs/reiserfs/dir.c b/fs/reiserfs/dir.c index 45aa05e2232f..5b50689d8539 100644 --- a/fs/reiserfs/dir.c +++ b/fs/reiserfs/dir.c @@ -34,7 +34,7 @@ static int reiserfs_dir_fsync(struct file *filp, loff_t start, loff_t end, struct inode *inode = filp->f_mapping->host; int err; - err = filemap_write_and_wait_range(inode->i_mapping, start, end); + err = file_write_and_wait_range(filp, start, end); if (err) return err; diff --git a/fs/reiserfs/file.c b/fs/reiserfs/file.c index b396eb09f288..843aadcc123c 100644 --- a/fs/reiserfs/file.c +++ b/fs/reiserfs/file.c @@ -154,7 +154,7 @@ static int reiserfs_sync_file(struct file *filp, loff_t start, loff_t end, int err; int barrier_done; - err = filemap_write_and_wait_range(inode->i_mapping, start, end); + err = file_write_and_wait_range(filp, start, end); if (err) return err; diff --git a/fs/reiserfs/journal.c b/fs/reiserfs/journal.c index a11d773e5ff3..0c882a0e2a6e 100644 --- a/fs/reiserfs/journal.c +++ b/fs/reiserfs/journal.c @@ -1481,7 +1481,7 @@ static int flush_journal_list(struct super_block *s, if ((!was_jwait) && !buffer_locked(saved_bh)) { reiserfs_warning(s, "journal-813", "BAD! buffer %llu %cdirty %cjwait, " - "not in a newer tranasction", + "not in a newer transaction", (unsigned long long)saved_bh-> b_blocknr, was_dirty ? ' ' : '!', was_jwait ? ' ' : '!'); diff --git a/fs/select.c b/fs/select.c index 9d5f15ed87fe..c6362e38ae92 100644 --- a/fs/select.c +++ b/fs/select.c @@ -1164,11 +1164,7 @@ int compat_get_fd_set(unsigned long nr, compat_ulong_t __user *ufdset, if (ufdset) { return compat_get_bitmap(fdset, ufdset, nr); } else { - /* Tricky, must clear full unsigned long in the - * kernel fdset at the end, ALIGN makes sure that - * actually happens. - */ - memset(fdset, 0, ALIGN(nr, BITS_PER_LONG)); + zero_fd_set(nr, fdset); return 0; } } diff --git a/fs/stat.c b/fs/stat.c index c35610845ab1..8a6aa8caf891 100644 --- a/fs/stat.c +++ b/fs/stat.c @@ -710,7 +710,7 @@ loff_t inode_get_bytes(struct inode *inode) loff_t ret; spin_lock(&inode->i_lock); - ret = (((loff_t)inode->i_blocks) << 9) + inode->i_bytes; + ret = __inode_get_bytes(inode); spin_unlock(&inode->i_lock); return ret; } diff --git a/fs/super.c b/fs/super.c index 6bc3352adcf3..221cfa1f4e92 100644 --- a/fs/super.c +++ b/fs/super.c @@ -242,7 +242,7 @@ static struct super_block *alloc_super(struct file_system_type *type, int flags, atomic_set(&s->s_active, 1); mutex_init(&s->s_vfs_rename_mutex); lockdep_set_class(&s->s_vfs_rename_mutex, &type->s_vfs_rename_key); - mutex_init(&s->s_dquot.dqio_mutex); + init_rwsem(&s->s_dquot.dqio_sem); s->s_maxbytes = MAX_NON_LFS; s->s_op = &default_op; s->s_time_gran = 1000000000; diff --git a/fs/sync.c b/fs/sync.c index 2a54c1f22035..2e3fd7d94d2d 100644 --- a/fs/sync.c +++ b/fs/sync.c @@ -335,14 +335,9 @@ SYSCALL_DEFINE4(sync_file_range, int, fd, loff_t, offset, loff_t, nbytes, goto out_put; mapping = f.file->f_mapping; - if (!mapping) { - ret = -EINVAL; - goto out_put; - } - ret = 0; if (flags & SYNC_FILE_RANGE_WAIT_BEFORE) { - ret = filemap_fdatawait_range(mapping, offset, endbyte); + ret = file_fdatawait_range(f.file, offset, endbyte); if (ret < 0) goto out_put; } @@ -355,7 +350,7 @@ SYSCALL_DEFINE4(sync_file_range, int, fd, loff_t, offset, loff_t, nbytes, } if (flags & SYNC_FILE_RANGE_WAIT_AFTER) - ret = filemap_fdatawait_range(mapping, offset, endbyte); + ret = file_fdatawait_range(f.file, offset, endbyte); out_put: fdput(f); diff --git a/fs/ubifs/file.c b/fs/ubifs/file.c index 8cad0b19b404..a02aa59d1e24 100644 --- a/fs/ubifs/file.c +++ b/fs/ubifs/file.c @@ -1337,7 +1337,7 @@ int ubifs_fsync(struct file *file, loff_t start, loff_t end, int datasync) */ return 0; - err = filemap_write_and_wait_range(inode->i_mapping, start, end); + err = file_write_and_wait_range(file, start, end); if (err) return err; inode_lock(inode); @@ -1490,7 +1490,10 @@ static int ubifs_migrate_page(struct address_space *mapping, SetPagePrivate(newpage); } - migrate_page_copy(newpage, page); + if (mode != MIGRATE_SYNC_NO_COPY) + migrate_page_copy(newpage, page); + else + migrate_page_states(newpage, page); return MIGRATEPAGE_SUCCESS; } #endif diff --git a/fs/udf/inode.c b/fs/udf/inode.c index 18fdb9d90812..8dacf4f57414 100644 --- a/fs/udf/inode.c +++ b/fs/udf/inode.c @@ -114,7 +114,7 @@ static void udf_update_extent_cache(struct inode *inode, loff_t estart, __udf_clear_extent_cache(inode); if (pos->bh) get_bh(pos->bh); - memcpy(&iinfo->cached_extent.epos, pos, sizeof(struct extent_position)); + memcpy(&iinfo->cached_extent.epos, pos, sizeof(*pos)); iinfo->cached_extent.lstart = estart; switch (iinfo->i_alloc_type) { case ICBTAG_FLAG_AD_SHORT: @@ -1572,13 +1572,8 @@ static int udf_alloc_i_data(struct inode *inode, size_t size) { struct udf_inode_info *iinfo = UDF_I(inode); iinfo->i_ext.i_data = kmalloc(size, GFP_KERNEL); - - if (!iinfo->i_ext.i_data) { - udf_err(inode->i_sb, "(ino %ld) no free memory\n", - inode->i_ino); + if (!iinfo->i_ext.i_data) return -ENOMEM; - } - return 0; } @@ -1703,7 +1698,7 @@ static int udf_update_inode(struct inode *inode, int do_sync) dsea->impUseLength = cpu_to_le32(sizeof(struct regid)); } eid = (struct regid *)dsea->impUse; - memset(eid, 0, sizeof(struct regid)); + memset(eid, 0, sizeof(*eid)); strcpy(eid->ident, UDF_ID_DEVELOPER); eid->identSuffix[0] = UDF_OS_CLASS_UNIX; eid->identSuffix[1] = UDF_OS_ID_LINUX; @@ -1754,7 +1749,7 @@ static int udf_update_inode(struct inode *inode, int do_sync) udf_time_to_disk_stamp(&efe->createTime, iinfo->i_crtime); udf_time_to_disk_stamp(&efe->attrTime, inode->i_ctime); - memset(&(efe->impIdent), 0, sizeof(struct regid)); + memset(&(efe->impIdent), 0, sizeof(efe->impIdent)); strcpy(efe->impIdent.ident, UDF_ID_DEVELOPER); efe->impIdent.identSuffix[0] = UDF_OS_CLASS_UNIX; efe->impIdent.identSuffix[1] = UDF_OS_ID_LINUX; diff --git a/fs/udf/namei.c b/fs/udf/namei.c index 385ee89d5824..885198dfd9f8 100644 --- a/fs/udf/namei.c +++ b/fs/udf/namei.c @@ -1184,7 +1184,7 @@ static int udf_rename(struct inode *old_dir, struct dentry *old_dentry, */ ncfi.fileVersionNum = ocfi.fileVersionNum; ncfi.fileCharacteristics = ocfi.fileCharacteristics; - memcpy(&(ncfi.icb), &(ocfi.icb), sizeof(struct long_ad)); + memcpy(&(ncfi.icb), &(ocfi.icb), sizeof(ocfi.icb)); udf_write_fi(new_dir, &ncfi, nfi, &nfibh, NULL, NULL); /* The old fid may have moved - find it again */ diff --git a/fs/udf/super.c b/fs/udf/super.c index 462ac2e9258c..93c59630512b 100644 --- a/fs/udf/super.c +++ b/fs/udf/super.c @@ -266,11 +266,8 @@ static int udf_sb_alloc_partition_maps(struct super_block *sb, u32 count) { struct udf_sb_info *sbi = UDF_SB(sb); - sbi->s_partmaps = kcalloc(count, sizeof(struct udf_part_map), - GFP_KERNEL); + sbi->s_partmaps = kcalloc(count, sizeof(*sbi->s_partmaps), GFP_KERNEL); if (!sbi->s_partmaps) { - udf_err(sb, "Unable to allocate space for %d partition maps\n", - count); sbi->s_partitions = 0; return -ENOMEM; } @@ -324,7 +321,8 @@ static void udf_sb_free_partitions(struct super_block *sb) { struct udf_sb_info *sbi = UDF_SB(sb); int i; - if (sbi->s_partmaps == NULL) + + if (!sbi->s_partmaps) return; for (i = 0; i < sbi->s_partitions; i++) udf_free_partition(&sbi->s_partmaps[i]); @@ -1071,7 +1069,7 @@ static struct udf_bitmap *udf_sb_alloc_bitmap(struct super_block *sb, u32 index) else bitmap = vzalloc(size); /* TODO: get rid of vzalloc */ - if (bitmap == NULL) + if (!bitmap) return NULL; bitmap->s_nr_groups = nr_groups; @@ -2099,7 +2097,7 @@ static int udf_fill_super(struct super_block *sb, void *options, int silent) uopt.fmode = UDF_INVALID_MODE; uopt.dmode = UDF_INVALID_MODE; - sbi = kzalloc(sizeof(struct udf_sb_info), GFP_KERNEL); + sbi = kzalloc(sizeof(*sbi), GFP_KERNEL); if (!sbi) return -ENOMEM; diff --git a/fs/userfaultfd.c b/fs/userfaultfd.c index b0d5897bc4e6..ef4b48d1ea42 100644 --- a/fs/userfaultfd.c +++ b/fs/userfaultfd.c @@ -109,27 +109,24 @@ static int userfaultfd_wake_function(wait_queue_entry_t *wq, unsigned mode, goto out; WRITE_ONCE(uwq->waken, true); /* - * The implicit smp_mb__before_spinlock in try_to_wake_up() - * renders uwq->waken visible to other CPUs before the task is - * waken. + * The Program-Order guarantees provided by the scheduler + * ensure uwq->waken is visible before the task is woken. */ ret = wake_up_state(wq->private, mode); - if (ret) + if (ret) { /* * Wake only once, autoremove behavior. * - * After the effect of list_del_init is visible to the - * other CPUs, the waitqueue may disappear from under - * us, see the !list_empty_careful() in - * handle_userfault(). try_to_wake_up() has an - * implicit smp_mb__before_spinlock, and the - * wq->private is read before calling the extern - * function "wake_up_state" (which in turns calls - * try_to_wake_up). While the spin_lock;spin_unlock; - * wouldn't be enough, the smp_mb__before_spinlock is - * enough to avoid an explicit smp_mb() here. + * After the effect of list_del_init is visible to the other + * CPUs, the waitqueue may disappear from under us, see the + * !list_empty_careful() in handle_userfault(). + * + * try_to_wake_up() has an implicit smp_mb(), and the + * wq->private is read before calling the extern function + * "wake_up_state" (which in turns calls try_to_wake_up). */ list_del_init(&wq->entry); + } out: return ret; } @@ -181,7 +178,8 @@ static inline void msg_init(struct uffd_msg *msg) static inline struct uffd_msg userfault_msg(unsigned long address, unsigned int flags, - unsigned long reason) + unsigned long reason, + unsigned int features) { struct uffd_msg msg; msg_init(&msg); @@ -205,6 +203,8 @@ static inline struct uffd_msg userfault_msg(unsigned long address, * write protect fault. */ msg.arg.pagefault.flags |= UFFD_PAGEFAULT_FLAG_WP; + if (features & UFFD_FEATURE_THREAD_ID) + msg.arg.pagefault.feat.ptid = task_pid_vnr(current); return msg; } @@ -373,13 +373,34 @@ int handle_userfault(struct vm_fault *vmf, unsigned long reason) VM_BUG_ON(reason & ~(VM_UFFD_MISSING|VM_UFFD_WP)); VM_BUG_ON(!(reason & VM_UFFD_MISSING) ^ !!(reason & VM_UFFD_WP)); + if (ctx->features & UFFD_FEATURE_SIGBUS) + goto out; + /* * If it's already released don't get it. This avoids to loop * in __get_user_pages if userfaultfd_release waits on the * caller of handle_userfault to release the mmap_sem. */ - if (unlikely(ACCESS_ONCE(ctx->released))) + if (unlikely(ACCESS_ONCE(ctx->released))) { + /* + * Don't return VM_FAULT_SIGBUS in this case, so a non + * cooperative manager can close the uffd after the + * last UFFDIO_COPY, without risking to trigger an + * involuntary SIGBUS if the process was starting the + * userfaultfd while the userfaultfd was still armed + * (but after the last UFFDIO_COPY). If the uffd + * wasn't already closed when the userfault reached + * this point, that would normally be solved by + * userfaultfd_must_wait returning 'false'. + * + * If we were to return VM_FAULT_SIGBUS here, the non + * cooperative manager would be instead forced to + * always call UFFDIO_UNREGISTER before it can safely + * close the uffd. + */ + ret = VM_FAULT_NOPAGE; goto out; + } /* * Check that we can return VM_FAULT_RETRY. @@ -422,7 +443,8 @@ int handle_userfault(struct vm_fault *vmf, unsigned long reason) init_waitqueue_func_entry(&uwq.wq, userfaultfd_wake_function); uwq.wq.private = current; - uwq.msg = userfault_msg(vmf->address, vmf->flags, reason); + uwq.msg = userfault_msg(vmf->address, vmf->flags, reason, + ctx->features); uwq.ctx = ctx; uwq.waken = false; @@ -1197,7 +1219,7 @@ static int userfaultfd_register(struct userfaultfd_ctx *ctx, struct uffdio_register __user *user_uffdio_register; unsigned long vm_flags, new_flags; bool found; - bool non_anon_pages; + bool basic_ioctls; unsigned long start, end, vma_end; user_uffdio_register = (struct uffdio_register __user *) arg; @@ -1263,7 +1285,7 @@ static int userfaultfd_register(struct userfaultfd_ctx *ctx, * Search for not compatible vmas. */ found = false; - non_anon_pages = false; + basic_ioctls = false; for (cur = vma; cur && cur->vm_start < end; cur = cur->vm_next) { cond_resched(); @@ -1302,8 +1324,8 @@ static int userfaultfd_register(struct userfaultfd_ctx *ctx, /* * Note vmas containing huge pages */ - if (is_vm_hugetlb_page(cur) || vma_is_shmem(cur)) - non_anon_pages = true; + if (is_vm_hugetlb_page(cur)) + basic_ioctls = true; found = true; } @@ -1374,7 +1396,7 @@ out_unlock: * userland which ioctls methods are guaranteed to * succeed on this range. */ - if (put_user(non_anon_pages ? UFFD_API_RANGE_IOCTLS_BASIC : + if (put_user(basic_ioctls ? UFFD_API_RANGE_IOCTLS_BASIC : UFFD_API_RANGE_IOCTLS, &user_uffdio_register->ioctls)) ret = -EFAULT; diff --git a/fs/xfs/libxfs/xfs_attr.c b/fs/xfs/libxfs/xfs_attr.c index de7b9bd30bec..6249c92671de 100644 --- a/fs/xfs/libxfs/xfs_attr.c +++ b/fs/xfs/libxfs/xfs_attr.c @@ -328,20 +328,19 @@ xfs_attr_set( */ xfs_defer_init(args.dfops, args.firstblock); error = xfs_attr_shortform_to_leaf(&args); - if (!error) - error = xfs_defer_finish(&args.trans, args.dfops, dp); - if (error) { - args.trans = NULL; - xfs_defer_cancel(&dfops); - goto out; - } + if (error) + goto out_defer_cancel; + xfs_defer_ijoin(args.dfops, dp); + error = xfs_defer_finish(&args.trans, args.dfops); + if (error) + goto out_defer_cancel; /* * Commit the leaf transformation. We'll need another (linked) * transaction to add the new attribute to the leaf. */ - error = xfs_trans_roll(&args.trans, dp); + error = xfs_trans_roll_inode(&args.trans, dp); if (error) goto out; @@ -373,6 +372,9 @@ xfs_attr_set( return error; +out_defer_cancel: + xfs_defer_cancel(&dfops); + args.trans = NULL; out: if (args.trans) xfs_trans_cancel(args.trans); @@ -593,19 +595,18 @@ xfs_attr_leaf_addname(xfs_da_args_t *args) */ xfs_defer_init(args->dfops, args->firstblock); error = xfs_attr3_leaf_to_node(args); - if (!error) - error = xfs_defer_finish(&args->trans, args->dfops, dp); - if (error) { - args->trans = NULL; - xfs_defer_cancel(args->dfops); - return error; - } + if (error) + goto out_defer_cancel; + xfs_defer_ijoin(args->dfops, dp); + error = xfs_defer_finish(&args->trans, args->dfops); + if (error) + goto out_defer_cancel; /* * Commit the current trans (including the inode) and start * a new one. */ - error = xfs_trans_roll(&args->trans, dp); + error = xfs_trans_roll_inode(&args->trans, dp); if (error) return error; @@ -620,7 +621,7 @@ xfs_attr_leaf_addname(xfs_da_args_t *args) * Commit the transaction that added the attr name so that * later routines can manage their own transactions. */ - error = xfs_trans_roll(&args->trans, dp); + error = xfs_trans_roll_inode(&args->trans, dp); if (error) return error; @@ -684,20 +685,18 @@ xfs_attr_leaf_addname(xfs_da_args_t *args) xfs_defer_init(args->dfops, args->firstblock); error = xfs_attr3_leaf_to_shortform(bp, args, forkoff); /* bp is gone due to xfs_da_shrink_inode */ - if (!error) - error = xfs_defer_finish(&args->trans, - args->dfops, dp); - if (error) { - args->trans = NULL; - xfs_defer_cancel(args->dfops); - return error; - } + if (error) + goto out_defer_cancel; + xfs_defer_ijoin(args->dfops, dp); + error = xfs_defer_finish(&args->trans, args->dfops); + if (error) + goto out_defer_cancel; } /* * Commit the remove and start the next trans in series. */ - error = xfs_trans_roll(&args->trans, dp); + error = xfs_trans_roll_inode(&args->trans, dp); } else if (args->rmtblkno > 0) { /* @@ -706,6 +705,10 @@ xfs_attr_leaf_addname(xfs_da_args_t *args) error = xfs_attr3_leaf_clearflag(args); } return error; +out_defer_cancel: + xfs_defer_cancel(args->dfops); + args->trans = NULL; + return error; } /* @@ -747,15 +750,18 @@ xfs_attr_leaf_removename(xfs_da_args_t *args) xfs_defer_init(args->dfops, args->firstblock); error = xfs_attr3_leaf_to_shortform(bp, args, forkoff); /* bp is gone due to xfs_da_shrink_inode */ - if (!error) - error = xfs_defer_finish(&args->trans, args->dfops, dp); - if (error) { - args->trans = NULL; - xfs_defer_cancel(args->dfops); - return error; - } + if (error) + goto out_defer_cancel; + xfs_defer_ijoin(args->dfops, dp); + error = xfs_defer_finish(&args->trans, args->dfops); + if (error) + goto out_defer_cancel; } return 0; +out_defer_cancel: + xfs_defer_cancel(args->dfops); + args->trans = NULL; + return error; } /* @@ -872,20 +878,18 @@ restart: state = NULL; xfs_defer_init(args->dfops, args->firstblock); error = xfs_attr3_leaf_to_node(args); - if (!error) - error = xfs_defer_finish(&args->trans, - args->dfops, dp); - if (error) { - args->trans = NULL; - xfs_defer_cancel(args->dfops); - goto out; - } + if (error) + goto out_defer_cancel; + xfs_defer_ijoin(args->dfops, dp); + error = xfs_defer_finish(&args->trans, args->dfops); + if (error) + goto out_defer_cancel; /* * Commit the node conversion and start the next * trans in the chain. */ - error = xfs_trans_roll(&args->trans, dp); + error = xfs_trans_roll_inode(&args->trans, dp); if (error) goto out; @@ -900,13 +904,12 @@ restart: */ xfs_defer_init(args->dfops, args->firstblock); error = xfs_da3_split(state); - if (!error) - error = xfs_defer_finish(&args->trans, args->dfops, dp); - if (error) { - args->trans = NULL; - xfs_defer_cancel(args->dfops); - goto out; - } + if (error) + goto out_defer_cancel; + xfs_defer_ijoin(args->dfops, dp); + error = xfs_defer_finish(&args->trans, args->dfops); + if (error) + goto out_defer_cancel; } else { /* * Addition succeeded, update Btree hashvals. @@ -925,7 +928,7 @@ restart: * Commit the leaf addition or btree split and start the next * trans in the chain. */ - error = xfs_trans_roll(&args->trans, dp); + error = xfs_trans_roll_inode(&args->trans, dp); if (error) goto out; @@ -999,20 +1002,18 @@ restart: if (retval && (state->path.active > 1)) { xfs_defer_init(args->dfops, args->firstblock); error = xfs_da3_join(state); - if (!error) - error = xfs_defer_finish(&args->trans, - args->dfops, dp); - if (error) { - args->trans = NULL; - xfs_defer_cancel(args->dfops); - goto out; - } + if (error) + goto out_defer_cancel; + xfs_defer_ijoin(args->dfops, dp); + error = xfs_defer_finish(&args->trans, args->dfops); + if (error) + goto out_defer_cancel; } /* * Commit and start the next trans in the chain. */ - error = xfs_trans_roll(&args->trans, dp); + error = xfs_trans_roll_inode(&args->trans, dp); if (error) goto out; @@ -1032,6 +1033,10 @@ out: if (error) return error; return retval; +out_defer_cancel: + xfs_defer_cancel(args->dfops); + args->trans = NULL; + goto out; } /* @@ -1122,17 +1127,16 @@ xfs_attr_node_removename(xfs_da_args_t *args) if (retval && (state->path.active > 1)) { xfs_defer_init(args->dfops, args->firstblock); error = xfs_da3_join(state); - if (!error) - error = xfs_defer_finish(&args->trans, args->dfops, dp); - if (error) { - args->trans = NULL; - xfs_defer_cancel(args->dfops); - goto out; - } + if (error) + goto out_defer_cancel; + xfs_defer_ijoin(args->dfops, dp); + error = xfs_defer_finish(&args->trans, args->dfops); + if (error) + goto out_defer_cancel; /* * Commit the Btree join operation and start a new trans. */ - error = xfs_trans_roll(&args->trans, dp); + error = xfs_trans_roll_inode(&args->trans, dp); if (error) goto out; } @@ -1156,14 +1160,12 @@ xfs_attr_node_removename(xfs_da_args_t *args) xfs_defer_init(args->dfops, args->firstblock); error = xfs_attr3_leaf_to_shortform(bp, args, forkoff); /* bp is gone due to xfs_da_shrink_inode */ - if (!error) - error = xfs_defer_finish(&args->trans, - args->dfops, dp); - if (error) { - args->trans = NULL; - xfs_defer_cancel(args->dfops); - goto out; - } + if (error) + goto out_defer_cancel; + xfs_defer_ijoin(args->dfops, dp); + error = xfs_defer_finish(&args->trans, args->dfops); + if (error) + goto out_defer_cancel; } else xfs_trans_brelse(args->trans, bp); } @@ -1172,6 +1174,10 @@ xfs_attr_node_removename(xfs_da_args_t *args) out: xfs_da_state_free(state); return error; +out_defer_cancel: + xfs_defer_cancel(args->dfops); + args->trans = NULL; + goto out; } /* diff --git a/fs/xfs/libxfs/xfs_attr_leaf.c b/fs/xfs/libxfs/xfs_attr_leaf.c index c6c15e5717e4..5c16db86b38f 100644 --- a/fs/xfs/libxfs/xfs_attr_leaf.c +++ b/fs/xfs/libxfs/xfs_attr_leaf.c @@ -2608,7 +2608,7 @@ xfs_attr3_leaf_clearflag( /* * Commit the flag value change and start the next trans in series. */ - return xfs_trans_roll(&args->trans, args->dp); + return xfs_trans_roll_inode(&args->trans, args->dp); } /* @@ -2659,7 +2659,7 @@ xfs_attr3_leaf_setflag( /* * Commit the flag value change and start the next trans in series. */ - return xfs_trans_roll(&args->trans, args->dp); + return xfs_trans_roll_inode(&args->trans, args->dp); } /* @@ -2777,7 +2777,7 @@ xfs_attr3_leaf_flipflags( /* * Commit the flag value change and start the next trans in series. */ - error = xfs_trans_roll(&args->trans, args->dp); + error = xfs_trans_roll_inode(&args->trans, args->dp); return error; } diff --git a/fs/xfs/libxfs/xfs_attr_remote.c b/fs/xfs/libxfs/xfs_attr_remote.c index 5236d8e45146..d56caf037ca0 100644 --- a/fs/xfs/libxfs/xfs_attr_remote.c +++ b/fs/xfs/libxfs/xfs_attr_remote.c @@ -467,13 +467,12 @@ xfs_attr_rmtval_set( error = xfs_bmapi_write(args->trans, dp, (xfs_fileoff_t)lblkno, blkcnt, XFS_BMAPI_ATTRFORK, args->firstblock, args->total, &map, &nmap, args->dfops); - if (!error) - error = xfs_defer_finish(&args->trans, args->dfops, dp); - if (error) { - args->trans = NULL; - xfs_defer_cancel(args->dfops); - return error; - } + if (error) + goto out_defer_cancel; + xfs_defer_ijoin(args->dfops, dp); + error = xfs_defer_finish(&args->trans, args->dfops); + if (error) + goto out_defer_cancel; ASSERT(nmap == 1); ASSERT((map.br_startblock != DELAYSTARTBLOCK) && @@ -484,7 +483,7 @@ xfs_attr_rmtval_set( /* * Start the next trans in the chain. */ - error = xfs_trans_roll(&args->trans, dp); + error = xfs_trans_roll_inode(&args->trans, dp); if (error) return error; } @@ -539,6 +538,10 @@ xfs_attr_rmtval_set( } ASSERT(valuelen == 0); return 0; +out_defer_cancel: + xfs_defer_cancel(args->dfops); + args->trans = NULL; + return error; } /* @@ -609,21 +612,23 @@ xfs_attr_rmtval_remove( error = xfs_bunmapi(args->trans, args->dp, lblkno, blkcnt, XFS_BMAPI_ATTRFORK, 1, args->firstblock, args->dfops, &done); - if (!error) - error = xfs_defer_finish(&args->trans, args->dfops, - args->dp); - if (error) { - args->trans = NULL; - xfs_defer_cancel(args->dfops); - return error; - } + if (error) + goto out_defer_cancel; + xfs_defer_ijoin(args->dfops, args->dp); + error = xfs_defer_finish(&args->trans, args->dfops); + if (error) + goto out_defer_cancel; /* * Close out trans and start the next one in the chain. */ - error = xfs_trans_roll(&args->trans, args->dp); + error = xfs_trans_roll_inode(&args->trans, args->dp); if (error) return error; } return 0; +out_defer_cancel: + xfs_defer_cancel(args->dfops); + args->trans = NULL; + return error; } diff --git a/fs/xfs/libxfs/xfs_bmap.c b/fs/xfs/libxfs/xfs_bmap.c index c09c16b1ad3b..459f4b4f08fe 100644 --- a/fs/xfs/libxfs/xfs_bmap.c +++ b/fs/xfs/libxfs/xfs_bmap.c @@ -579,7 +579,7 @@ xfs_bmap_validate_ret( #else #define xfs_bmap_check_leaf_extents(cur, ip, whichfork) do { } while (0) -#define xfs_bmap_validate_ret(bno,len,flags,mval,onmap,nmap) +#define xfs_bmap_validate_ret(bno,len,flags,mval,onmap,nmap) do { } while (0) #endif /* DEBUG */ /* @@ -880,7 +880,7 @@ xfs_bmap_local_to_extents( xfs_ifork_t *ifp; /* inode fork pointer */ xfs_alloc_arg_t args; /* allocation arguments */ xfs_buf_t *bp; /* buffer for extent block */ - xfs_bmbt_rec_host_t *ep; /* extent record pointer */ + struct xfs_bmbt_irec rec; /* * We don't want to deal with the case of keeping inode data inline yet. @@ -943,9 +943,12 @@ xfs_bmap_local_to_extents( xfs_bmap_local_to_extents_empty(ip, whichfork); flags |= XFS_ILOG_CORE; - xfs_iext_add(ifp, 0, 1); - ep = xfs_iext_get_ext(ifp, 0); - xfs_bmbt_set_allf(ep, 0, args.fsbno, 1, XFS_EXT_NORM); + rec.br_startoff = 0; + rec.br_startblock = args.fsbno; + rec.br_blockcount = 1; + rec.br_state = XFS_EXT_NORM; + xfs_iext_insert(ip, 0, 1, &rec, 0); + trace_xfs_bmap_post_update(ip, 0, whichfork == XFS_ATTR_FORK ? BMAP_ATTRFORK : 0, _THIS_IP_); @@ -1196,7 +1199,7 @@ xfs_bmap_add_attrfork( xfs_log_sb(tp); } - error = xfs_defer_finish(&tp, &dfops, NULL); + error = xfs_defer_finish(&tp, &dfops); if (error) goto bmap_cancel; error = xfs_trans_commit(tp); @@ -1356,7 +1359,6 @@ xfs_bmap_first_unused( xfs_fileoff_t lastaddr; /* last block number seen */ xfs_fileoff_t lowest; /* lowest useful block */ xfs_fileoff_t max; /* starting useful block */ - xfs_fileoff_t off; /* offset for this block */ xfs_extnum_t nextents; /* number of extent entries */ ASSERT(XFS_IFORK_FORMAT(ip, whichfork) == XFS_DINODE_FMT_BTREE || @@ -1373,16 +1375,19 @@ xfs_bmap_first_unused( lowest = *first_unused; nextents = xfs_iext_count(ifp); for (idx = 0, lastaddr = 0, max = lowest; idx < nextents; idx++) { - xfs_bmbt_rec_host_t *ep = xfs_iext_get_ext(ifp, idx); - off = xfs_bmbt_get_startoff(ep); + struct xfs_bmbt_irec got; + + xfs_iext_get_extent(ifp, idx, &got); + /* * See if the hole before this extent will work. */ - if (off >= lowest + len && off - max >= len) { + if (got.br_startoff >= lowest + len && + got.br_startoff - max >= len) { *first_unused = max; return 0; } - lastaddr = off + xfs_bmbt_get_blockcount(ep); + lastaddr = got.br_startoff + got.br_blockcount; max = XFS_FILEOFF_MAX(lastaddr, lowest); } *first_unused = max; @@ -4918,7 +4923,7 @@ xfs_bmap_del_extent_delay( da_new = XFS_FILBLKS_MIN(xfs_bmap_worst_indlen(ip, got->br_blockcount), da_old); got->br_startblock = nullstartblock((int)da_new); - xfs_bmbt_set_all(xfs_iext_get_ext(ifp, *idx), got); + xfs_iext_update_extent(ifp, *idx, got); trace_xfs_bmap_post_update(ip, *idx, state, _THIS_IP_); break; case BMAP_RIGHT_CONTIG: @@ -4930,7 +4935,7 @@ xfs_bmap_del_extent_delay( da_new = XFS_FILBLKS_MIN(xfs_bmap_worst_indlen(ip, got->br_blockcount), da_old); got->br_startblock = nullstartblock((int)da_new); - xfs_bmbt_set_all(xfs_iext_get_ext(ifp, *idx), got); + xfs_iext_update_extent(ifp, *idx, got); trace_xfs_bmap_post_update(ip, *idx, state, _THIS_IP_); break; case 0: @@ -4956,7 +4961,7 @@ xfs_bmap_del_extent_delay( del->br_blockcount); got->br_startblock = nullstartblock((int)got_indlen); - xfs_bmbt_set_all(xfs_iext_get_ext(ifp, *idx), got); + xfs_iext_update_extent(ifp, *idx, got); trace_xfs_bmap_post_update(ip, *idx, 0, _THIS_IP_); new.br_startoff = del_endoff; @@ -5026,7 +5031,7 @@ xfs_bmap_del_extent_cow( got->br_startoff = del_endoff; got->br_blockcount -= del->br_blockcount; got->br_startblock = del->br_startblock + del->br_blockcount; - xfs_bmbt_set_all(xfs_iext_get_ext(ifp, *idx), got); + xfs_iext_update_extent(ifp, *idx, got); trace_xfs_bmap_post_update(ip, *idx, state, _THIS_IP_); break; case BMAP_RIGHT_CONTIG: @@ -5035,7 +5040,7 @@ xfs_bmap_del_extent_cow( */ trace_xfs_bmap_pre_update(ip, *idx, state, _THIS_IP_); got->br_blockcount -= del->br_blockcount; - xfs_bmbt_set_all(xfs_iext_get_ext(ifp, *idx), got); + xfs_iext_update_extent(ifp, *idx, got); trace_xfs_bmap_post_update(ip, *idx, state, _THIS_IP_); break; case 0: @@ -5044,7 +5049,7 @@ xfs_bmap_del_extent_cow( */ trace_xfs_bmap_pre_update(ip, *idx, state, _THIS_IP_); got->br_blockcount = del->br_startoff - got->br_startoff; - xfs_bmbt_set_all(xfs_iext_get_ext(ifp, *idx), got); + xfs_iext_update_extent(ifp, *idx, got); trace_xfs_bmap_post_update(ip, *idx, state, _THIS_IP_); new.br_startoff = del_endoff; @@ -5876,32 +5881,26 @@ xfs_bmse_merge( int whichfork, xfs_fileoff_t shift, /* shift fsb */ int current_ext, /* idx of gotp */ - struct xfs_bmbt_rec_host *gotp, /* extent to shift */ - struct xfs_bmbt_rec_host *leftp, /* preceding extent */ + struct xfs_bmbt_irec *got, /* extent to shift */ + struct xfs_bmbt_irec *left, /* preceding extent */ struct xfs_btree_cur *cur, - int *logflags) /* output */ + int *logflags, /* output */ + struct xfs_defer_ops *dfops) { - struct xfs_bmbt_irec got; - struct xfs_bmbt_irec left; + struct xfs_ifork *ifp = XFS_IFORK_PTR(ip, whichfork); + struct xfs_bmbt_irec new; xfs_filblks_t blockcount; int error, i; struct xfs_mount *mp = ip->i_mount; - xfs_bmbt_get_all(gotp, &got); - xfs_bmbt_get_all(leftp, &left); - blockcount = left.br_blockcount + got.br_blockcount; + blockcount = left->br_blockcount + got->br_blockcount; ASSERT(xfs_isilocked(ip, XFS_IOLOCK_EXCL)); ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); - ASSERT(xfs_bmse_can_merge(&left, &got, shift)); + ASSERT(xfs_bmse_can_merge(left, got, shift)); - /* - * Merge the in-core extents. Note that the host record pointers and - * current_ext index are invalid once the extent has been removed via - * xfs_iext_remove(). - */ - xfs_bmbt_set_blockcount(leftp, blockcount); - xfs_iext_remove(ip, current_ext, 1, 0); + new = *left; + new.br_blockcount = blockcount; /* * Update the on-disk extent count, the btree if necessary and log the @@ -5912,12 +5911,12 @@ xfs_bmse_merge( *logflags |= XFS_ILOG_CORE; if (!cur) { *logflags |= XFS_ILOG_DEXT; - return 0; + goto done; } /* lookup and remove the extent to merge */ - error = xfs_bmbt_lookup_eq(cur, got.br_startoff, got.br_startblock, - got.br_blockcount, &i); + error = xfs_bmbt_lookup_eq(cur, got->br_startoff, got->br_startblock, + got->br_blockcount, &i); if (error) return error; XFS_WANT_CORRUPTED_RETURN(mp, i == 1); @@ -5928,16 +5927,28 @@ xfs_bmse_merge( XFS_WANT_CORRUPTED_RETURN(mp, i == 1); /* lookup and update size of the previous extent */ - error = xfs_bmbt_lookup_eq(cur, left.br_startoff, left.br_startblock, - left.br_blockcount, &i); + error = xfs_bmbt_lookup_eq(cur, left->br_startoff, left->br_startblock, + left->br_blockcount, &i); if (error) return error; XFS_WANT_CORRUPTED_RETURN(mp, i == 1); - left.br_blockcount = blockcount; + error = xfs_bmbt_update(cur, new.br_startoff, new.br_startblock, + new.br_blockcount, new.br_state); + if (error) + return error; + +done: + xfs_iext_update_extent(ifp, current_ext - 1, &new); + xfs_iext_remove(ip, current_ext, 1, 0); - return xfs_bmbt_update(cur, left.br_startoff, left.br_startblock, - left.br_blockcount, left.br_state); + /* update reverse mapping. rmap functions merge the rmaps for us */ + error = xfs_rmap_unmap_extent(mp, dfops, ip, whichfork, got); + if (error) + return error; + memcpy(&new, got, sizeof(new)); + new.br_startoff = left->br_startoff + left->br_blockcount; + return xfs_rmap_map_extent(mp, dfops, ip, whichfork, &new); } /* @@ -5949,7 +5960,7 @@ xfs_bmse_shift_one( int whichfork, xfs_fileoff_t offset_shift_fsb, int *current_ext, - struct xfs_bmbt_rec_host *gotp, + struct xfs_bmbt_irec *got, struct xfs_btree_cur *cur, int *logflags, enum shift_direction direction, @@ -5958,9 +5969,7 @@ xfs_bmse_shift_one( struct xfs_ifork *ifp; struct xfs_mount *mp; xfs_fileoff_t startoff; - struct xfs_bmbt_rec_host *adj_irecp; - struct xfs_bmbt_irec got; - struct xfs_bmbt_irec adj_irec; + struct xfs_bmbt_irec adj_irec, new; int error; int i; int total_extents; @@ -5969,13 +5978,11 @@ xfs_bmse_shift_one( ifp = XFS_IFORK_PTR(ip, whichfork); total_extents = xfs_iext_count(ifp); - xfs_bmbt_get_all(gotp, &got); - /* delalloc extents should be prevented by caller */ - XFS_WANT_CORRUPTED_RETURN(mp, !isnullstartblock(got.br_startblock)); + XFS_WANT_CORRUPTED_RETURN(mp, !isnullstartblock(got->br_startblock)); if (direction == SHIFT_LEFT) { - startoff = got.br_startoff - offset_shift_fsb; + startoff = got->br_startoff - offset_shift_fsb; /* * Check for merge if we've got an extent to the left, @@ -5983,46 +5990,39 @@ xfs_bmse_shift_one( * of the file for the shift. */ if (!*current_ext) { - if (got.br_startoff < offset_shift_fsb) + if (got->br_startoff < offset_shift_fsb) return -EINVAL; goto update_current_ext; } + /* - * grab the left extent and check for a large - * enough hole. + * grab the left extent and check for a large enough hole. */ - adj_irecp = xfs_iext_get_ext(ifp, *current_ext - 1); - xfs_bmbt_get_all(adj_irecp, &adj_irec); - - if (startoff < - adj_irec.br_startoff + adj_irec.br_blockcount) + xfs_iext_get_extent(ifp, *current_ext - 1, &adj_irec); + if (startoff < adj_irec.br_startoff + adj_irec.br_blockcount) return -EINVAL; /* check whether to merge the extent or shift it down */ - if (xfs_bmse_can_merge(&adj_irec, &got, - offset_shift_fsb)) { - error = xfs_bmse_merge(ip, whichfork, offset_shift_fsb, - *current_ext, gotp, adj_irecp, - cur, logflags); - if (error) - return error; - adj_irec = got; - goto update_rmap; + if (xfs_bmse_can_merge(&adj_irec, got, offset_shift_fsb)) { + return xfs_bmse_merge(ip, whichfork, offset_shift_fsb, + *current_ext, got, &adj_irec, + cur, logflags, dfops); } } else { - startoff = got.br_startoff + offset_shift_fsb; + startoff = got->br_startoff + offset_shift_fsb; /* nothing to move if this is the last extent */ if (*current_ext >= (total_extents - 1)) goto update_current_ext; + /* * If this is not the last extent in the file, make sure there * is enough room between current extent and next extent for * accommodating the shift. */ - adj_irecp = xfs_iext_get_ext(ifp, *current_ext + 1); - xfs_bmbt_get_all(adj_irecp, &adj_irec); - if (startoff + got.br_blockcount > adj_irec.br_startoff) + xfs_iext_get_extent(ifp, *current_ext + 1, &adj_irec); + if (startoff + got->br_blockcount > adj_irec.br_startoff) return -EINVAL; + /* * Unlike a left shift (which involves a hole punch), * a right shift does not modify extent neighbors @@ -6030,45 +6030,48 @@ xfs_bmse_shift_one( * in this scenario. Check anyways and warn if we * encounter two extents that could be one. */ - if (xfs_bmse_can_merge(&got, &adj_irec, offset_shift_fsb)) + if (xfs_bmse_can_merge(got, &adj_irec, offset_shift_fsb)) WARN_ON_ONCE(1); } + /* * Increment the extent index for the next iteration, update the start * offset of the in-core extent and update the btree if applicable. */ update_current_ext: - if (direction == SHIFT_LEFT) - (*current_ext)++; - else - (*current_ext)--; - xfs_bmbt_set_startoff(gotp, startoff); *logflags |= XFS_ILOG_CORE; - adj_irec = got; - if (!cur) { + + new = *got; + new.br_startoff = startoff; + + if (cur) { + error = xfs_bmbt_lookup_eq(cur, got->br_startoff, + got->br_startblock, got->br_blockcount, &i); + if (error) + return error; + XFS_WANT_CORRUPTED_RETURN(mp, i == 1); + + error = xfs_bmbt_update(cur, new.br_startoff, + new.br_startblock, new.br_blockcount, + new.br_state); + if (error) + return error; + } else { *logflags |= XFS_ILOG_DEXT; - goto update_rmap; } - error = xfs_bmbt_lookup_eq(cur, got.br_startoff, got.br_startblock, - got.br_blockcount, &i); - if (error) - return error; - XFS_WANT_CORRUPTED_RETURN(mp, i == 1); + xfs_iext_update_extent(ifp, *current_ext, &new); - got.br_startoff = startoff; - error = xfs_bmbt_update(cur, got.br_startoff, got.br_startblock, - got.br_blockcount, got.br_state); - if (error) - return error; + if (direction == SHIFT_LEFT) + (*current_ext)++; + else + (*current_ext)--; -update_rmap: /* update reverse mapping */ - error = xfs_rmap_unmap_extent(mp, dfops, ip, whichfork, &adj_irec); + error = xfs_rmap_unmap_extent(mp, dfops, ip, whichfork, got); if (error) return error; - adj_irec.br_startoff = startoff; - return xfs_rmap_map_extent(mp, dfops, ip, whichfork, &adj_irec); + return xfs_rmap_map_extent(mp, dfops, ip, whichfork, &new); } /* @@ -6095,7 +6098,6 @@ xfs_bmap_shift_extents( int num_exts) { struct xfs_btree_cur *cur = NULL; - struct xfs_bmbt_rec_host *gotp; struct xfs_bmbt_irec got; struct xfs_mount *mp = ip->i_mount; struct xfs_ifork *ifp; @@ -6122,7 +6124,6 @@ xfs_bmap_shift_extents( ASSERT(xfs_isilocked(ip, XFS_IOLOCK_EXCL)); ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); ASSERT(direction == SHIFT_LEFT || direction == SHIFT_RIGHT); - ASSERT(*next_fsb != NULLFSBLOCK || direction == SHIFT_RIGHT); ifp = XFS_IFORK_PTR(ip, whichfork); if (!(ifp->if_flags & XFS_IFEXTENTS)) { @@ -6154,10 +6155,26 @@ xfs_bmap_shift_extents( * In case of first right shift, we need to initialize next_fsb */ if (*next_fsb == NULLFSBLOCK) { - gotp = xfs_iext_get_ext(ifp, total_extents - 1); - xfs_bmbt_get_all(gotp, &got); + ASSERT(direction == SHIFT_RIGHT); + + current_ext = total_extents - 1; + xfs_iext_get_extent(ifp, current_ext, &got); + if (stop_fsb > got.br_startoff) { + *done = 1; + goto del_cursor; + } *next_fsb = got.br_startoff; - if (stop_fsb > *next_fsb) { + } else { + /* + * Look up the extent index for the fsb where we start shifting. We can + * henceforth iterate with current_ext as extent list changes are locked + * out via ilock. + * + * If next_fsb lies in a hole beyond which there are no extents we are + * done. + */ + if (!xfs_iext_lookup_extent(ip, ifp, *next_fsb, ¤t_ext, + &got)) { *done = 1; goto del_cursor; } @@ -6165,37 +6182,26 @@ xfs_bmap_shift_extents( /* Lookup the extent index at which we have to stop */ if (direction == SHIFT_RIGHT) { - gotp = xfs_iext_bno_to_ext(ifp, stop_fsb, &stop_extent); + struct xfs_bmbt_irec s; + + xfs_iext_lookup_extent(ip, ifp, stop_fsb, &stop_extent, &s); /* Make stop_extent exclusive of shift range */ stop_extent--; - } else + if (current_ext <= stop_extent) { + error = -EIO; + goto del_cursor; + } + } else { stop_extent = total_extents; - - /* - * Look up the extent index for the fsb where we start shifting. We can - * henceforth iterate with current_ext as extent list changes are locked - * out via ilock. - * - * gotp can be null in 2 cases: 1) if there are no extents or 2) - * *next_fsb lies in a hole beyond which there are no extents. Either - * way, we are done. - */ - gotp = xfs_iext_bno_to_ext(ifp, *next_fsb, ¤t_ext); - if (!gotp) { - *done = 1; - goto del_cursor; - } - - /* some sanity checking before we finally start shifting extents */ - if ((direction == SHIFT_LEFT && current_ext >= stop_extent) || - (direction == SHIFT_RIGHT && current_ext <= stop_extent)) { - error = -EIO; - goto del_cursor; + if (current_ext >= stop_extent) { + error = -EIO; + goto del_cursor; + } } while (nexts++ < num_exts) { error = xfs_bmse_shift_one(ip, whichfork, offset_shift_fsb, - ¤t_ext, gotp, cur, &logflags, + ¤t_ext, &got, cur, &logflags, direction, dfops); if (error) goto del_cursor; @@ -6213,13 +6219,11 @@ xfs_bmap_shift_extents( *next_fsb = NULLFSBLOCK; break; } - gotp = xfs_iext_get_ext(ifp, current_ext); + xfs_iext_get_extent(ifp, current_ext, &got); } - if (!*done) { - xfs_bmbt_get_all(gotp, &got); + if (!*done) *next_fsb = got.br_startoff; - } del_cursor: if (cur) @@ -6248,7 +6252,6 @@ xfs_bmap_split_extent_at( { int whichfork = XFS_DATA_FORK; struct xfs_btree_cur *cur = NULL; - struct xfs_bmbt_rec_host *gotp; struct xfs_bmbt_irec got; struct xfs_bmbt_irec new; /* split extent */ struct xfs_mount *mp = ip->i_mount; @@ -6280,21 +6283,10 @@ xfs_bmap_split_extent_at( } /* - * gotp can be null in 2 cases: 1) if there are no extents - * or 2) split_fsb lies in a hole beyond which there are - * no extents. Either way, we are done. - */ - gotp = xfs_iext_bno_to_ext(ifp, split_fsb, ¤t_ext); - if (!gotp) - return 0; - - xfs_bmbt_get_all(gotp, &got); - - /* - * Check split_fsb lies in a hole or the start boundary offset - * of the extent. + * If there are not extents, or split_fsb lies in a hole we are done. */ - if (got.br_startoff >= split_fsb) + if (!xfs_iext_lookup_extent(ip, ifp, split_fsb, ¤t_ext, &got) || + got.br_startoff >= split_fsb) return 0; gotblkcnt = split_fsb - got.br_startoff; @@ -6317,8 +6309,8 @@ xfs_bmap_split_extent_at( XFS_WANT_CORRUPTED_GOTO(mp, i == 1, del_cursor); } - xfs_bmbt_set_blockcount(gotp, gotblkcnt); got.br_blockcount = gotblkcnt; + xfs_iext_update_extent(ifp, current_ext, &got); logflags = XFS_ILOG_CORE; if (cur) { @@ -6402,7 +6394,7 @@ xfs_bmap_split_extent( if (error) goto out; - error = xfs_defer_finish(&tp, &dfops, NULL); + error = xfs_defer_finish(&tp, &dfops); if (error) goto out; @@ -6452,7 +6444,7 @@ __xfs_bmap_add( bi->bi_whichfork = whichfork; bi->bi_bmap = *bmap; - error = xfs_defer_join(dfops, bi->bi_owner); + error = xfs_defer_ijoin(dfops, bi->bi_owner); if (error) { kmem_free(bi); return error; diff --git a/fs/xfs/libxfs/xfs_bmap_btree.c b/fs/xfs/libxfs/xfs_bmap_btree.c index 85de22513014..a6331ffa51e3 100644 --- a/fs/xfs/libxfs/xfs_bmap_btree.c +++ b/fs/xfs/libxfs/xfs_bmap_btree.c @@ -858,6 +858,7 @@ xfs_bmbt_change_owner( cur = xfs_bmbt_init_cursor(ip->i_mount, tp, ip, whichfork); if (!cur) return -ENOMEM; + cur->bc_private.b.flags |= XFS_BTCUR_BPRV_INVALID_OWNER; error = xfs_btree_change_owner(cur, new_owner, buffer_list); xfs_btree_del_cursor(cur, error ? XFS_BTREE_ERROR : XFS_BTREE_NOERROR); diff --git a/fs/xfs/libxfs/xfs_btree.c b/fs/xfs/libxfs/xfs_btree.c index e0bcc4a59efd..5bfb88261c7e 100644 --- a/fs/xfs/libxfs/xfs_btree.c +++ b/fs/xfs/libxfs/xfs_btree.c @@ -1791,6 +1791,7 @@ xfs_btree_lookup_get_block( /* Check the inode owner since the verifiers don't. */ if (xfs_sb_version_hascrc(&cur->bc_mp->m_sb) && + !(cur->bc_private.b.flags & XFS_BTCUR_BPRV_INVALID_OWNER) && (cur->bc_flags & XFS_BTREE_LONG_PTRS) && be64_to_cpu((*blkp)->bb_u.l.bb_owner) != cur->bc_private.b.ip->i_ino) @@ -4451,10 +4452,15 @@ xfs_btree_block_change_owner( /* modify the owner */ block = xfs_btree_get_block(cur, level, &bp); - if (cur->bc_flags & XFS_BTREE_LONG_PTRS) + if (cur->bc_flags & XFS_BTREE_LONG_PTRS) { + if (block->bb_u.l.bb_owner == cpu_to_be64(bbcoi->new_owner)) + return 0; block->bb_u.l.bb_owner = cpu_to_be64(bbcoi->new_owner); - else + } else { + if (block->bb_u.s.bb_owner == cpu_to_be32(bbcoi->new_owner)) + return 0; block->bb_u.s.bb_owner = cpu_to_be32(bbcoi->new_owner); + } /* * If the block is a root block hosted in an inode, we might not have a @@ -4463,16 +4469,19 @@ xfs_btree_block_change_owner( * block is formatted into the on-disk inode fork. We still change it, * though, so everything is consistent in memory. */ - if (bp) { - if (cur->bc_tp) { - xfs_trans_ordered_buf(cur->bc_tp, bp); + if (!bp) { + ASSERT(cur->bc_flags & XFS_BTREE_ROOT_IN_INODE); + ASSERT(level == cur->bc_nlevels - 1); + return 0; + } + + if (cur->bc_tp) { + if (!xfs_trans_ordered_buf(cur->bc_tp, bp)) { xfs_btree_log_block(cur, bp, XFS_BB_OWNER); - } else { - xfs_buf_delwri_queue(bp, bbcoi->buffer_list); + return -EAGAIN; } } else { - ASSERT(cur->bc_flags & XFS_BTREE_ROOT_IN_INODE); - ASSERT(level == cur->bc_nlevels - 1); + xfs_buf_delwri_queue(bp, bbcoi->buffer_list); } return 0; diff --git a/fs/xfs/libxfs/xfs_btree.h b/fs/xfs/libxfs/xfs_btree.h index 9c95e965cfe5..f2a88c3b1159 100644 --- a/fs/xfs/libxfs/xfs_btree.h +++ b/fs/xfs/libxfs/xfs_btree.h @@ -233,7 +233,8 @@ typedef struct xfs_btree_cur short forksize; /* fork's inode space */ char whichfork; /* data or attr fork */ char flags; /* flags */ -#define XFS_BTCUR_BPRV_WASDEL 1 /* was delayed */ +#define XFS_BTCUR_BPRV_WASDEL (1<<0) /* was delayed */ +#define XFS_BTCUR_BPRV_INVALID_OWNER (1<<1) /* for ext swap */ } b; } bc_private; /* per-btree type data */ } xfs_btree_cur_t; diff --git a/fs/xfs/libxfs/xfs_defer.c b/fs/xfs/libxfs/xfs_defer.c index 5c2929f94bd3..072ebfe1d6ae 100644 --- a/fs/xfs/libxfs/xfs_defer.c +++ b/fs/xfs/libxfs/xfs_defer.c @@ -240,23 +240,19 @@ xfs_defer_trans_abort( STATIC int xfs_defer_trans_roll( struct xfs_trans **tp, - struct xfs_defer_ops *dop, - struct xfs_inode *ip) + struct xfs_defer_ops *dop) { int i; int error; - /* Log all the joined inodes except the one we passed in. */ - for (i = 0; i < XFS_DEFER_OPS_NR_INODES && dop->dop_inodes[i]; i++) { - if (dop->dop_inodes[i] == ip) - continue; + /* Log all the joined inodes. */ + for (i = 0; i < XFS_DEFER_OPS_NR_INODES && dop->dop_inodes[i]; i++) xfs_trans_log_inode(*tp, dop->dop_inodes[i], XFS_ILOG_CORE); - } trace_xfs_defer_trans_roll((*tp)->t_mountp, dop); /* Roll the transaction. */ - error = xfs_trans_roll(tp, ip); + error = xfs_trans_roll(tp); if (error) { trace_xfs_defer_trans_roll_error((*tp)->t_mountp, dop, error); xfs_defer_trans_abort(*tp, dop, error); @@ -264,12 +260,9 @@ xfs_defer_trans_roll( } dop->dop_committed = true; - /* Rejoin the joined inodes except the one we passed in. */ - for (i = 0; i < XFS_DEFER_OPS_NR_INODES && dop->dop_inodes[i]; i++) { - if (dop->dop_inodes[i] == ip) - continue; + /* Rejoin the joined inodes. */ + for (i = 0; i < XFS_DEFER_OPS_NR_INODES && dop->dop_inodes[i]; i++) xfs_trans_ijoin(*tp, dop->dop_inodes[i], 0); - } return error; } @@ -284,11 +277,10 @@ xfs_defer_has_unfinished_work( /* * Add this inode to the deferred op. Each joined inode is relogged - * each time we roll the transaction, in addition to any inode passed - * to xfs_defer_finish(). + * each time we roll the transaction. */ int -xfs_defer_join( +xfs_defer_ijoin( struct xfs_defer_ops *dop, struct xfs_inode *ip) { @@ -317,8 +309,7 @@ xfs_defer_join( int xfs_defer_finish( struct xfs_trans **tp, - struct xfs_defer_ops *dop, - struct xfs_inode *ip) + struct xfs_defer_ops *dop) { struct xfs_defer_pending *dfp; struct list_head *li; @@ -337,7 +328,7 @@ xfs_defer_finish( xfs_defer_intake_work(*tp, dop); /* Roll the transaction. */ - error = xfs_defer_trans_roll(tp, dop, ip); + error = xfs_defer_trans_roll(tp, dop); if (error) goto out; diff --git a/fs/xfs/libxfs/xfs_defer.h b/fs/xfs/libxfs/xfs_defer.h index f6e93ef0bffe..d4f046dd44bd 100644 --- a/fs/xfs/libxfs/xfs_defer.h +++ b/fs/xfs/libxfs/xfs_defer.h @@ -72,12 +72,11 @@ struct xfs_defer_ops { void xfs_defer_add(struct xfs_defer_ops *dop, enum xfs_defer_ops_type type, struct list_head *h); -int xfs_defer_finish(struct xfs_trans **tp, struct xfs_defer_ops *dop, - struct xfs_inode *ip); +int xfs_defer_finish(struct xfs_trans **tp, struct xfs_defer_ops *dop); void xfs_defer_cancel(struct xfs_defer_ops *dop); void xfs_defer_init(struct xfs_defer_ops *dop, xfs_fsblock_t *fbp); bool xfs_defer_has_unfinished_work(struct xfs_defer_ops *dop); -int xfs_defer_join(struct xfs_defer_ops *dop, struct xfs_inode *ip); +int xfs_defer_ijoin(struct xfs_defer_ops *dop, struct xfs_inode *ip); /* Description of a deferred type. */ struct xfs_defer_op_type { diff --git a/fs/xfs/libxfs/xfs_ialloc.c b/fs/xfs/libxfs/xfs_ialloc.c index ffd5a15d1bb6..988bb3f31446 100644 --- a/fs/xfs/libxfs/xfs_ialloc.c +++ b/fs/xfs/libxfs/xfs_ialloc.c @@ -378,8 +378,6 @@ xfs_ialloc_inode_init( * transaction and pin the log appropriately. */ xfs_trans_ordered_buf(tp, fbuf); - xfs_trans_log_buf(tp, fbuf, 0, - BBTOB(fbuf->b_length) - 1); } } else { fbuf->b_flags |= XBF_DONE; @@ -1133,6 +1131,7 @@ xfs_dialloc_ag_inobt( int error; int offset; int i, j; + int searchdistance = 10; pag = xfs_perag_get(mp, agno); @@ -1159,7 +1158,6 @@ xfs_dialloc_ag_inobt( if (pagno == agno) { int doneleft; /* done, to the left */ int doneright; /* done, to the right */ - int searchdistance = 10; error = xfs_inobt_lookup(cur, pagino, XFS_LOOKUP_LE, &i); if (error) @@ -1220,21 +1218,9 @@ xfs_dialloc_ag_inobt( /* * Loop until we find an inode chunk with a free inode. */ - while (!doneleft || !doneright) { + while (--searchdistance > 0 && (!doneleft || !doneright)) { int useleft; /* using left inode chunk this time */ - if (!--searchdistance) { - /* - * Not in range - save last search - * location and allocate a new inode - */ - xfs_btree_del_cursor(tcur, XFS_BTREE_NOERROR); - pag->pagl_leftrec = trec.ir_startino; - pag->pagl_rightrec = rec.ir_startino; - pag->pagl_pagino = pagino; - goto newino; - } - /* figure out the closer block if both are valid. */ if (!doneleft && !doneright) { useleft = pagino - @@ -1246,13 +1232,13 @@ xfs_dialloc_ag_inobt( /* free inodes to the left? */ if (useleft && trec.ir_freecount) { - rec = trec; xfs_btree_del_cursor(cur, XFS_BTREE_NOERROR); cur = tcur; pag->pagl_leftrec = trec.ir_startino; pag->pagl_rightrec = rec.ir_startino; pag->pagl_pagino = pagino; + rec = trec; goto alloc_inode; } @@ -1278,26 +1264,37 @@ xfs_dialloc_ag_inobt( goto error1; } - /* - * We've reached the end of the btree. because - * we are only searching a small chunk of the - * btree each search, there is obviously free - * inodes closer to the parent inode than we - * are now. restart the search again. - */ - pag->pagl_pagino = NULLAGINO; - pag->pagl_leftrec = NULLAGINO; - pag->pagl_rightrec = NULLAGINO; - xfs_btree_del_cursor(tcur, XFS_BTREE_NOERROR); - xfs_btree_del_cursor(cur, XFS_BTREE_NOERROR); - goto restart_pagno; + if (searchdistance <= 0) { + /* + * Not in range - save last search + * location and allocate a new inode + */ + xfs_btree_del_cursor(tcur, XFS_BTREE_NOERROR); + pag->pagl_leftrec = trec.ir_startino; + pag->pagl_rightrec = rec.ir_startino; + pag->pagl_pagino = pagino; + + } else { + /* + * We've reached the end of the btree. because + * we are only searching a small chunk of the + * btree each search, there is obviously free + * inodes closer to the parent inode than we + * are now. restart the search again. + */ + pag->pagl_pagino = NULLAGINO; + pag->pagl_leftrec = NULLAGINO; + pag->pagl_rightrec = NULLAGINO; + xfs_btree_del_cursor(tcur, XFS_BTREE_NOERROR); + xfs_btree_del_cursor(cur, XFS_BTREE_NOERROR); + goto restart_pagno; + } } /* * In a different AG from the parent. * See if the most recently allocated block has any free. */ -newino: if (agi->agi_newino != cpu_to_be32(NULLAGINO)) { error = xfs_inobt_lookup(cur, be32_to_cpu(agi->agi_newino), XFS_LOOKUP_EQ, &i); diff --git a/fs/xfs/libxfs/xfs_inode_fork.c b/fs/xfs/libxfs/xfs_inode_fork.c index 0e80f34fe97c..31840ca24018 100644 --- a/fs/xfs/libxfs/xfs_inode_fork.c +++ b/fs/xfs/libxfs/xfs_inode_fork.c @@ -1499,14 +1499,11 @@ xfs_iext_realloc_indirect( xfs_ifork_t *ifp, /* inode fork pointer */ int new_size) /* new indirection array size */ { - int nlists; /* number of irec's (ex lists) */ - int size; /* current indirection array size */ - ASSERT(ifp->if_flags & XFS_IFEXTIREC); - nlists = ifp->if_real_bytes / XFS_IEXT_BUFSZ; - size = nlists * sizeof(xfs_ext_irec_t); ASSERT(ifp->if_real_bytes); - ASSERT((new_size >= 0) && (new_size != size)); + ASSERT((new_size >= 0) && + (new_size != ((ifp->if_real_bytes / XFS_IEXT_BUFSZ) * + sizeof(xfs_ext_irec_t)))); if (new_size == 0) { xfs_iext_destroy(ifp); } else { @@ -2023,3 +2020,15 @@ xfs_iext_get_extent( xfs_bmbt_get_all(xfs_iext_get_ext(ifp, idx), gotp); return true; } + +void +xfs_iext_update_extent( + struct xfs_ifork *ifp, + xfs_extnum_t idx, + struct xfs_bmbt_irec *gotp) +{ + ASSERT(idx >= 0); + ASSERT(idx < xfs_iext_count(ifp)); + + xfs_bmbt_set_all(xfs_iext_get_ext(ifp, idx), gotp); +} diff --git a/fs/xfs/libxfs/xfs_inode_fork.h b/fs/xfs/libxfs/xfs_inode_fork.h index 7fb8365326d1..11af705219f6 100644 --- a/fs/xfs/libxfs/xfs_inode_fork.h +++ b/fs/xfs/libxfs/xfs_inode_fork.h @@ -187,6 +187,8 @@ bool xfs_iext_lookup_extent(struct xfs_inode *ip, xfs_extnum_t *idxp, struct xfs_bmbt_irec *gotp); bool xfs_iext_get_extent(struct xfs_ifork *ifp, xfs_extnum_t idx, struct xfs_bmbt_irec *gotp); +void xfs_iext_update_extent(struct xfs_ifork *ifp, xfs_extnum_t idx, + struct xfs_bmbt_irec *gotp); extern struct kmem_zone *xfs_ifork_zone; diff --git a/fs/xfs/libxfs/xfs_refcount.c b/fs/xfs/libxfs/xfs_refcount.c index 45b1c3b4e047..9d5406b4f663 100644 --- a/fs/xfs/libxfs/xfs_refcount.c +++ b/fs/xfs/libxfs/xfs_refcount.c @@ -1679,7 +1679,7 @@ xfs_refcount_recover_cow_leftovers( xfs_bmap_add_free(mp, &dfops, fsb, rr->rr_rrec.rc_blockcount, NULL); - error = xfs_defer_finish(&tp, &dfops, NULL); + error = xfs_defer_finish(&tp, &dfops); if (error) goto out_defer; diff --git a/fs/xfs/xfs_aops.c b/fs/xfs/xfs_aops.c index 6bf120bb1a17..fffae1390d7f 100644 --- a/fs/xfs/xfs_aops.c +++ b/fs/xfs/xfs_aops.c @@ -85,11 +85,11 @@ xfs_find_bdev_for_inode( * 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. + * Note that we open code the action in end_buffer_async_write here so that we + * only have to iterate over the buffers attached to the page once. This is not + * only more efficient, but also ensures that we only calls end_page_writeback + * at the end of the iteration, and thus avoids the pitfall of having the page + * and buffers potentially freed after every call to end_buffer_async_write. */ static void xfs_finish_page_writeback( @@ -97,29 +97,44 @@ xfs_finish_page_writeback( struct bio_vec *bvec, int error) { - unsigned int end = bvec->bv_offset + bvec->bv_len - 1; - struct buffer_head *head, *bh, *next; + struct buffer_head *head = page_buffers(bvec->bv_page), *bh = head; + bool busy = false; unsigned int off = 0; - unsigned int bsize; + unsigned long flags; ASSERT(bvec->bv_offset < PAGE_SIZE); ASSERT((bvec->bv_offset & (i_blocksize(inode) - 1)) == 0); - ASSERT(end < PAGE_SIZE); + ASSERT(bvec->bv_offset + bvec->bv_len <= PAGE_SIZE); ASSERT((bvec->bv_len & (i_blocksize(inode) - 1)) == 0); - bh = head = page_buffers(bvec->bv_page); - - bsize = bh->b_size; + local_irq_save(flags); + bit_spin_lock(BH_Uptodate_Lock, &head->b_state); do { - if (off > end) - break; - next = bh->b_this_page; - if (off < bvec->bv_offset) - goto next_bh; - bh->b_end_io(bh, !error); -next_bh: - off += bsize; - } while ((bh = next) != head); + if (off >= bvec->bv_offset && + off < bvec->bv_offset + bvec->bv_len) { + ASSERT(buffer_async_write(bh)); + ASSERT(bh->b_end_io == NULL); + + if (error) { + mark_buffer_write_io_error(bh); + clear_buffer_uptodate(bh); + SetPageError(bvec->bv_page); + } else { + set_buffer_uptodate(bh); + } + clear_buffer_async_write(bh); + unlock_buffer(bh); + } else if (buffer_async_write(bh)) { + ASSERT(buffer_locked(bh)); + busy = true; + } + off += bh->b_size; + } while ((bh = bh->b_this_page) != head); + bit_spin_unlock(BH_Uptodate_Lock, &head->b_state); + local_irq_restore(flags); + + if (!busy) + end_page_writeback(bvec->bv_page); } /* @@ -133,8 +148,10 @@ xfs_destroy_ioend( int error) { struct inode *inode = ioend->io_inode; - struct bio *last = ioend->io_bio; - struct bio *bio, *next; + struct bio *bio = &ioend->io_inline_bio; + struct bio *last = ioend->io_bio, *next; + u64 start = bio->bi_iter.bi_sector; + bool quiet = bio_flagged(bio, BIO_QUIET); for (bio = &ioend->io_inline_bio; bio; bio = next) { struct bio_vec *bvec; @@ -155,6 +172,11 @@ xfs_destroy_ioend( bio_put(bio); } + + if (unlikely(error && !quiet)) { + xfs_err_ratelimited(XFS_I(inode)->i_mount, + "writeback error on sector %llu", start); + } } /* @@ -423,7 +445,8 @@ xfs_start_buffer_writeback( ASSERT(!buffer_delay(bh)); ASSERT(!buffer_unwritten(bh)); - mark_buffer_async_write(bh); + bh->b_end_io = NULL; + set_buffer_async_write(bh); set_buffer_uptodate(bh); clear_buffer_dirty(bh); } @@ -517,7 +540,7 @@ xfs_init_bio_from_bh( struct buffer_head *bh) { bio->bi_iter.bi_sector = bh->b_blocknr * (bh->b_size >> 9); - bio->bi_bdev = bh->b_bdev; + bio_set_dev(bio, bh->b_bdev); } static struct xfs_ioend * diff --git a/fs/xfs/xfs_attr_inactive.c b/fs/xfs/xfs_attr_inactive.c index be0b79d8900f..ebd66b19fbfc 100644 --- a/fs/xfs/xfs_attr_inactive.c +++ b/fs/xfs/xfs_attr_inactive.c @@ -97,7 +97,7 @@ xfs_attr3_leaf_freextent( /* * Roll to next transaction. */ - error = xfs_trans_roll(trans, dp); + error = xfs_trans_roll_inode(trans, dp); if (error) return error; } @@ -308,7 +308,7 @@ xfs_attr3_node_inactive( /* * Atomically commit the whole invalidate stuff. */ - error = xfs_trans_roll(trans, dp); + error = xfs_trans_roll_inode(trans, dp); if (error) return error; } @@ -375,7 +375,7 @@ xfs_attr3_root_inactive( /* * Commit the invalidate and start the next transaction. */ - error = xfs_trans_roll(trans, dp); + error = xfs_trans_roll_inode(trans, dp); return error; } diff --git a/fs/xfs/xfs_bmap_item.c b/fs/xfs/xfs_bmap_item.c index 88073910fa5d..dd136f7275e4 100644 --- a/fs/xfs/xfs_bmap_item.c +++ b/fs/xfs/xfs_bmap_item.c @@ -502,7 +502,7 @@ xfs_bui_recover( } /* Finish transaction, free inodes. */ - error = xfs_defer_finish(&tp, &dfops, NULL); + error = xfs_defer_finish(&tp, &dfops); if (error) goto err_dfops; diff --git a/fs/xfs/xfs_bmap_util.c b/fs/xfs/xfs_bmap_util.c index 93e955262d07..cd9a5400ba4f 100644 --- a/fs/xfs/xfs_bmap_util.c +++ b/fs/xfs/xfs_bmap_util.c @@ -222,22 +222,21 @@ xfs_bmap_eof( * Count leaf blocks given a range of extent records. Delayed allocation * extents are not counted towards the totals. */ -STATIC void +xfs_extnum_t xfs_bmap_count_leaves( struct xfs_ifork *ifp, - xfs_extnum_t *numrecs, xfs_filblks_t *count) { - xfs_extnum_t i; - xfs_extnum_t nr_exts = xfs_iext_count(ifp); - - for (i = 0; i < nr_exts; i++) { - xfs_bmbt_rec_host_t *frp = xfs_iext_get_ext(ifp, i); - if (!isnullstartblock(xfs_bmbt_get_startblock(frp))) { - (*numrecs)++; - *count += xfs_bmbt_get_blockcount(frp); + struct xfs_bmbt_irec got; + xfs_extnum_t numrecs = 0, i = 0; + + while (xfs_iext_get_extent(ifp, i++, &got)) { + if (!isnullstartblock(got.br_startblock)) { + *count += got.br_blockcount; + numrecs++; } } + return numrecs; } /* @@ -370,7 +369,7 @@ xfs_bmap_count_blocks( switch (XFS_IFORK_FORMAT(ip, whichfork)) { case XFS_DINODE_FMT_EXTENTS: - xfs_bmap_count_leaves(ifp, nextents, count); + *nextents = xfs_bmap_count_leaves(ifp, count); return 0; case XFS_DINODE_FMT_BTREE: if (!(ifp->if_flags & XFS_IFEXTENTS)) { @@ -1136,7 +1135,7 @@ xfs_alloc_file_space( /* * Complete the transaction */ - error = xfs_defer_finish(&tp, &dfops, NULL); + error = xfs_defer_finish(&tp, &dfops); if (error) goto error0; @@ -1202,7 +1201,8 @@ xfs_unmap_extent( if (error) goto out_bmap_cancel; - error = xfs_defer_finish(&tp, &dfops, ip); + xfs_defer_ijoin(&dfops, ip); + error = xfs_defer_finish(&tp, &dfops); if (error) goto out_bmap_cancel; @@ -1496,7 +1496,7 @@ xfs_shift_file_space( if (error) goto out_bmap_cancel; - error = xfs_defer_finish(&tp, &dfops, NULL); + error = xfs_defer_finish(&tp, &dfops); if (error) goto out_bmap_cancel; @@ -1777,7 +1777,8 @@ xfs_swap_extent_rmap( if (error) goto out_defer; - error = xfs_defer_finish(tpp, &dfops, ip); + xfs_defer_ijoin(&dfops, ip); + error = xfs_defer_finish(tpp, &dfops); if (error) goto out_defer; @@ -1840,29 +1841,18 @@ xfs_swap_extent_forks( } /* - * Before we've swapped the forks, lets set the owners of the forks - * appropriately. We have to do this as we are demand paging the btree - * buffers, and so the validation done on read will expect the owner - * field to be correctly set. Once we change the owners, we can swap the - * inode forks. + * Btree format (v3) inodes have the inode number stamped in the bmbt + * block headers. We can't start changing the bmbt blocks until the + * inode owner change is logged so recovery does the right thing in the + * event of a crash. Set the owner change log flags now and leave the + * bmbt scan as the last step. */ if (ip->i_d.di_version == 3 && - ip->i_d.di_format == XFS_DINODE_FMT_BTREE) { + ip->i_d.di_format == XFS_DINODE_FMT_BTREE) (*target_log_flags) |= XFS_ILOG_DOWNER; - error = xfs_bmbt_change_owner(tp, ip, XFS_DATA_FORK, - tip->i_ino, NULL); - if (error) - return error; - } - if (tip->i_d.di_version == 3 && - tip->i_d.di_format == XFS_DINODE_FMT_BTREE) { + tip->i_d.di_format == XFS_DINODE_FMT_BTREE) (*src_log_flags) |= XFS_ILOG_DOWNER; - error = xfs_bmbt_change_owner(tp, tip, XFS_DATA_FORK, - ip->i_ino, NULL); - if (error) - return error; - } /* * Swap the data forks of the inodes @@ -1940,6 +1930,48 @@ xfs_swap_extent_forks( return 0; } +/* + * Fix up the owners of the bmbt blocks to refer to the current inode. The + * change owner scan attempts to order all modified buffers in the current + * transaction. In the event of ordered buffer failure, the offending buffer is + * physically logged as a fallback and the scan returns -EAGAIN. We must roll + * the transaction in this case to replenish the fallback log reservation and + * restart the scan. This process repeats until the scan completes. + */ +static int +xfs_swap_change_owner( + struct xfs_trans **tpp, + struct xfs_inode *ip, + struct xfs_inode *tmpip) +{ + int error; + struct xfs_trans *tp = *tpp; + + do { + error = xfs_bmbt_change_owner(tp, ip, XFS_DATA_FORK, ip->i_ino, + NULL); + /* success or fatal error */ + if (error != -EAGAIN) + break; + + error = xfs_trans_roll(tpp); + if (error) + break; + tp = *tpp; + + /* + * Redirty both inodes so they can relog and keep the log tail + * moving forward. + */ + xfs_trans_ijoin(tp, ip, 0); + xfs_trans_ijoin(tp, tmpip, 0); + xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE); + xfs_trans_log_inode(tp, tmpip, XFS_ILOG_CORE); + } while (true); + + return error; +} + int xfs_swap_extents( struct xfs_inode *ip, /* target inode */ @@ -1954,7 +1986,7 @@ xfs_swap_extents( int lock_flags; struct xfs_ifork *cowfp; uint64_t f; - int resblks; + int resblks = 0; /* * Lock the inodes against other IO, page faults and truncate to @@ -2002,11 +2034,8 @@ xfs_swap_extents( XFS_SWAP_RMAP_SPACE_RES(mp, XFS_IFORK_NEXTENTS(tip, XFS_DATA_FORK), XFS_DATA_FORK); - error = xfs_trans_alloc(mp, &M_RES(mp)->tr_write, resblks, - 0, 0, &tp); - } else - error = xfs_trans_alloc(mp, &M_RES(mp)->tr_ichange, 0, - 0, 0, &tp); + } + error = xfs_trans_alloc(mp, &M_RES(mp)->tr_write, resblks, 0, 0, &tp); if (error) goto out_unlock; @@ -2092,6 +2121,23 @@ xfs_swap_extents( xfs_trans_log_inode(tp, tip, target_log_flags); /* + * The extent forks have been swapped, but crc=1,rmapbt=0 filesystems + * have inode number owner values in the bmbt blocks that still refer to + * the old inode. Scan each bmbt to fix up the owner values with the + * inode number of the current inode. + */ + if (src_log_flags & XFS_ILOG_DOWNER) { + error = xfs_swap_change_owner(&tp, ip, tip); + if (error) + goto out_trans_cancel; + } + if (target_log_flags & XFS_ILOG_DOWNER) { + error = xfs_swap_change_owner(&tp, tip, ip); + if (error) + goto out_trans_cancel; + } + + /* * If this is a synchronous mount, make sure that the * transaction goes to disk before returning to the user. */ diff --git a/fs/xfs/xfs_bmap_util.h b/fs/xfs/xfs_bmap_util.h index 0cede1043571..0eaa81dc49be 100644 --- a/fs/xfs/xfs_bmap_util.h +++ b/fs/xfs/xfs_bmap_util.h @@ -70,6 +70,7 @@ int xfs_swap_extents(struct xfs_inode *ip, struct xfs_inode *tip, xfs_daddr_t xfs_fsb_to_db(struct xfs_inode *ip, xfs_fsblock_t fsb); +xfs_extnum_t xfs_bmap_count_leaves(struct xfs_ifork *ifp, xfs_filblks_t *count); int xfs_bmap_count_blocks(struct xfs_trans *tp, struct xfs_inode *ip, int whichfork, xfs_extnum_t *nextents, xfs_filblks_t *count); diff --git a/fs/xfs/xfs_buf.c b/fs/xfs/xfs_buf.c index 72f038492ba8..b1c9711e79a4 100644 --- a/fs/xfs/xfs_buf.c +++ b/fs/xfs/xfs_buf.c @@ -1281,7 +1281,7 @@ next_chunk: nr_pages = min(total_nr_pages, BIO_MAX_PAGES); bio = bio_alloc(GFP_NOIO, nr_pages); - bio->bi_bdev = bp->b_target->bt_bdev; + bio_set_dev(bio, bp->b_target->bt_bdev); bio->bi_iter.bi_sector = sector; bio->bi_end_io = xfs_buf_bio_end_io; bio->bi_private = bp; diff --git a/fs/xfs/xfs_buf_item.c b/fs/xfs/xfs_buf_item.c index f6a8422e9562..e0a0af0946f2 100644 --- a/fs/xfs/xfs_buf_item.c +++ b/fs/xfs/xfs_buf_item.c @@ -29,6 +29,7 @@ #include "xfs_error.h" #include "xfs_trace.h" #include "xfs_log.h" +#include "xfs_inode.h" kmem_zone_t *xfs_buf_item_zone; @@ -322,6 +323,8 @@ xfs_buf_item_format( ASSERT((bip->bli_flags & XFS_BLI_STALE) || (xfs_blft_from_flags(&bip->__bli_format) > XFS_BLFT_UNKNOWN_BUF && xfs_blft_from_flags(&bip->__bli_format) < XFS_BLFT_MAX_BUF)); + ASSERT(!(bip->bli_flags & XFS_BLI_ORDERED) || + (bip->bli_flags & XFS_BLI_STALE)); /* @@ -346,16 +349,6 @@ xfs_buf_item_format( bip->bli_flags &= ~XFS_BLI_INODE_BUF; } - if ((bip->bli_flags & (XFS_BLI_ORDERED|XFS_BLI_STALE)) == - XFS_BLI_ORDERED) { - /* - * The buffer has been logged just to order it. It is not being - * included in the transaction commit, so don't format it. - */ - trace_xfs_buf_item_format_ordered(bip); - return; - } - for (i = 0; i < bip->bli_format_count; i++) { xfs_buf_item_format_segment(bip, lv, &vecp, offset, &bip->bli_formats[i]); @@ -574,26 +567,20 @@ xfs_buf_item_unlock( { struct xfs_buf_log_item *bip = BUF_ITEM(lip); struct xfs_buf *bp = bip->bli_buf; - bool clean; - bool aborted; - int flags; + bool aborted = !!(lip->li_flags & XFS_LI_ABORTED); + bool hold = !!(bip->bli_flags & XFS_BLI_HOLD); + bool dirty = !!(bip->bli_flags & XFS_BLI_DIRTY); +#if defined(DEBUG) || defined(XFS_WARN) + bool ordered = !!(bip->bli_flags & XFS_BLI_ORDERED); +#endif /* Clear the buffer's association with this transaction. */ bp->b_transp = NULL; /* - * If this is a transaction abort, don't return early. Instead, allow - * the brelse to happen. Normally it would be done for stale - * (cancelled) buffers at unpin time, but we'll never go through the - * pin/unpin cycle if we abort inside commit. + * The per-transaction state has been copied above so clear it from the + * bli. */ - aborted = (lip->li_flags & XFS_LI_ABORTED) ? true : false; - /* - * Before possibly freeing the buf item, copy the per-transaction state - * so we can reference it safely later after clearing it from the - * buffer log item. - */ - flags = bip->bli_flags; bip->bli_flags &= ~(XFS_BLI_LOGGED | XFS_BLI_HOLD | XFS_BLI_ORDERED); /* @@ -601,7 +588,7 @@ xfs_buf_item_unlock( * unlock the buffer and free the buf item when the buffer is unpinned * for the last time. */ - if (flags & XFS_BLI_STALE) { + if (bip->bli_flags & XFS_BLI_STALE) { trace_xfs_buf_item_unlock_stale(bip); ASSERT(bip->__bli_format.blf_flags & XFS_BLF_CANCEL); if (!aborted) { @@ -619,20 +606,11 @@ xfs_buf_item_unlock( * regardless of whether it is dirty or not. A dirty abort implies a * shutdown, anyway. * - * Ordered buffers are dirty but may have no recorded changes, so ensure - * we only release clean items here. + * The bli dirty state should match whether the blf has logged segments + * except for ordered buffers, where only the bli should be dirty. */ - clean = (flags & XFS_BLI_DIRTY) ? false : true; - if (clean) { - int i; - for (i = 0; i < bip->bli_format_count; i++) { - if (!xfs_bitmap_empty(bip->bli_formats[i].blf_data_map, - bip->bli_formats[i].blf_map_size)) { - clean = false; - break; - } - } - } + ASSERT((!ordered && dirty == xfs_buf_item_dirty_format(bip)) || + (ordered && dirty && !xfs_buf_item_dirty_format(bip))); /* * Clean buffers, by definition, cannot be in the AIL. However, aborted @@ -651,11 +629,11 @@ xfs_buf_item_unlock( ASSERT(XFS_FORCED_SHUTDOWN(lip->li_mountp)); xfs_trans_ail_remove(lip, SHUTDOWN_LOG_IO_ERROR); xfs_buf_item_relse(bp); - } else if (clean) + } else if (!dirty) xfs_buf_item_relse(bp); } - if (!(flags & XFS_BLI_HOLD)) + if (!hold) xfs_buf_relse(bp); } @@ -945,14 +923,22 @@ xfs_buf_item_log( /* - * Return 1 if the buffer has been logged or ordered in a transaction (at any - * point, not just the current transaction) and 0 if not. + * Return true if the buffer has any ranges logged/dirtied by a transaction, + * false otherwise. */ -uint -xfs_buf_item_dirty( - xfs_buf_log_item_t *bip) +bool +xfs_buf_item_dirty_format( + struct xfs_buf_log_item *bip) { - return (bip->bli_flags & XFS_BLI_DIRTY); + int i; + + for (i = 0; i < bip->bli_format_count; i++) { + if (!xfs_bitmap_empty(bip->bli_formats[i].blf_data_map, + bip->bli_formats[i].blf_map_size)) + return true; + } + + return false; } STATIC void @@ -1054,6 +1040,31 @@ xfs_buf_do_callbacks( } } +/* + * Invoke the error state callback for each log item affected by the failed I/O. + * + * If a metadata buffer write fails with a non-permanent error, the buffer is + * eventually resubmitted and so the completion callbacks are not run. The error + * state may need to be propagated to the log items attached to the buffer, + * however, so the next AIL push of the item knows hot to handle it correctly. + */ +STATIC void +xfs_buf_do_callbacks_fail( + struct xfs_buf *bp) +{ + struct xfs_log_item *next; + struct xfs_log_item *lip = bp->b_fspriv; + struct xfs_ail *ailp = lip->li_ailp; + + spin_lock(&ailp->xa_lock); + for (; lip; lip = next) { + next = lip->li_bio_list; + if (lip->li_ops->iop_error) + lip->li_ops->iop_error(lip, bp); + } + spin_unlock(&ailp->xa_lock); +} + static bool xfs_buf_iodone_callback_error( struct xfs_buf *bp) @@ -1123,7 +1134,11 @@ xfs_buf_iodone_callback_error( if ((mp->m_flags & XFS_MOUNT_UNMOUNTING) && mp->m_fail_unmount) goto permanent_error; - /* still a transient error, higher layers will retry */ + /* + * Still a transient error, run IO completion failure callbacks and let + * the higher layers retry the buffer. + */ + xfs_buf_do_callbacks_fail(bp); xfs_buf_ioerror(bp, 0); xfs_buf_relse(bp); return true; @@ -1204,3 +1219,31 @@ xfs_buf_iodone( xfs_trans_ail_delete(ailp, lip, SHUTDOWN_CORRUPT_INCORE); xfs_buf_item_free(BUF_ITEM(lip)); } + +/* + * Requeue a failed buffer for writeback + * + * Return true if the buffer has been re-queued properly, false otherwise + */ +bool +xfs_buf_resubmit_failed_buffers( + struct xfs_buf *bp, + struct xfs_log_item *lip, + struct list_head *buffer_list) +{ + struct xfs_log_item *next; + + /* + * Clear XFS_LI_FAILED flag from all items before resubmit + * + * XFS_LI_FAILED set/clear is protected by xa_lock, caller this + * function already have it acquired + */ + for (; lip; lip = next) { + next = lip->li_bio_list; + xfs_clear_li_failed(lip); + } + + /* Add this buffer back to the delayed write list */ + return xfs_buf_delwri_queue(bp, buffer_list); +} diff --git a/fs/xfs/xfs_buf_item.h b/fs/xfs/xfs_buf_item.h index f7eba99d19dd..9690ce62c9a7 100644 --- a/fs/xfs/xfs_buf_item.h +++ b/fs/xfs/xfs_buf_item.h @@ -64,12 +64,15 @@ typedef struct xfs_buf_log_item { int xfs_buf_item_init(struct xfs_buf *, struct xfs_mount *); void xfs_buf_item_relse(struct xfs_buf *); void xfs_buf_item_log(xfs_buf_log_item_t *, uint, uint); -uint xfs_buf_item_dirty(xfs_buf_log_item_t *); +bool xfs_buf_item_dirty_format(struct xfs_buf_log_item *); void xfs_buf_attach_iodone(struct xfs_buf *, void(*)(struct xfs_buf *, xfs_log_item_t *), xfs_log_item_t *); void xfs_buf_iodone_callbacks(struct xfs_buf *); void xfs_buf_iodone(struct xfs_buf *, struct xfs_log_item *); +bool xfs_buf_resubmit_failed_buffers(struct xfs_buf *, + struct xfs_log_item *, + struct list_head *); extern kmem_zone_t *xfs_buf_item_zone; diff --git a/fs/xfs/xfs_dquot.c b/fs/xfs/xfs_dquot.c index fd2ef8c2c9a7..cd82429d8df7 100644 --- a/fs/xfs/xfs_dquot.c +++ b/fs/xfs/xfs_dquot.c @@ -383,7 +383,7 @@ xfs_qm_dqalloc( xfs_trans_bhold(tp, bp); - error = xfs_defer_finish(tpp, &dfops, NULL); + error = xfs_defer_finish(tpp, &dfops); if (error) goto error1; diff --git a/fs/xfs/xfs_error.c b/fs/xfs/xfs_error.c index 2f4feb959bfb..bd786a9ac2c3 100644 --- a/fs/xfs/xfs_error.c +++ b/fs/xfs/xfs_error.c @@ -57,6 +57,7 @@ static unsigned int xfs_errortag_random_default[] = { XFS_RANDOM_AG_RESV_CRITICAL, XFS_RANDOM_DROP_WRITES, XFS_RANDOM_LOG_BAD_CRC, + XFS_RANDOM_LOG_ITEM_PIN, }; struct xfs_errortag_attr { @@ -161,6 +162,7 @@ XFS_ERRORTAG_ATTR_RW(bmap_finish_one, XFS_ERRTAG_BMAP_FINISH_ONE); XFS_ERRORTAG_ATTR_RW(ag_resv_critical, XFS_ERRTAG_AG_RESV_CRITICAL); XFS_ERRORTAG_ATTR_RW(drop_writes, XFS_ERRTAG_DROP_WRITES); XFS_ERRORTAG_ATTR_RW(log_bad_crc, XFS_ERRTAG_LOG_BAD_CRC); +XFS_ERRORTAG_ATTR_RW(log_item_pin, XFS_ERRTAG_LOG_ITEM_PIN); static struct attribute *xfs_errortag_attrs[] = { XFS_ERRORTAG_ATTR_LIST(noerror), @@ -193,6 +195,7 @@ static struct attribute *xfs_errortag_attrs[] = { XFS_ERRORTAG_ATTR_LIST(ag_resv_critical), XFS_ERRORTAG_ATTR_LIST(drop_writes), XFS_ERRORTAG_ATTR_LIST(log_bad_crc), + XFS_ERRORTAG_ATTR_LIST(log_item_pin), NULL, }; diff --git a/fs/xfs/xfs_error.h b/fs/xfs/xfs_error.h index 7577be5f09bc..7c4bef3bddb7 100644 --- a/fs/xfs/xfs_error.h +++ b/fs/xfs/xfs_error.h @@ -106,7 +106,8 @@ extern void xfs_verifier_error(struct xfs_buf *bp); */ #define XFS_ERRTAG_DROP_WRITES 28 #define XFS_ERRTAG_LOG_BAD_CRC 29 -#define XFS_ERRTAG_MAX 30 +#define XFS_ERRTAG_LOG_ITEM_PIN 30 +#define XFS_ERRTAG_MAX 31 /* * Random factors for above tags, 1 means always, 2 means 1/2 time, etc. @@ -141,6 +142,7 @@ extern void xfs_verifier_error(struct xfs_buf *bp); #define XFS_RANDOM_AG_RESV_CRITICAL 4 #define XFS_RANDOM_DROP_WRITES 1 #define XFS_RANDOM_LOG_BAD_CRC 1 +#define XFS_RANDOM_LOG_ITEM_PIN 1 #ifdef DEBUG extern int xfs_errortag_init(struct xfs_mount *mp); diff --git a/fs/xfs/xfs_file.c b/fs/xfs/xfs_file.c index c4893e226fd8..ec3e44fcf771 100644 --- a/fs/xfs/xfs_file.c +++ b/fs/xfs/xfs_file.c @@ -1011,96 +1011,67 @@ xfs_file_llseek( * page_lock (MM) * i_lock (XFS - extent map serialisation) */ - -/* - * mmap()d file has taken write protection fault and is being made writable. We - * can set the page state up correctly for a writable page, which means we can - * do correct delalloc accounting (ENOSPC checking!) and unwritten extent - * mapping. - */ -STATIC int -xfs_filemap_page_mkwrite( - struct vm_fault *vmf) +static int +__xfs_filemap_fault( + struct vm_fault *vmf, + enum page_entry_size pe_size, + bool write_fault) { struct inode *inode = file_inode(vmf->vma->vm_file); + struct xfs_inode *ip = XFS_I(inode); int ret; - trace_xfs_filemap_page_mkwrite(XFS_I(inode)); + trace_xfs_filemap_fault(ip, pe_size, write_fault); - sb_start_pagefault(inode->i_sb); - file_update_time(vmf->vma->vm_file); - xfs_ilock(XFS_I(inode), XFS_MMAPLOCK_SHARED); + if (write_fault) { + sb_start_pagefault(inode->i_sb); + file_update_time(vmf->vma->vm_file); + } + xfs_ilock(XFS_I(inode), XFS_MMAPLOCK_SHARED); if (IS_DAX(inode)) { - ret = dax_iomap_fault(vmf, PE_SIZE_PTE, &xfs_iomap_ops); + ret = dax_iomap_fault(vmf, pe_size, &xfs_iomap_ops); } else { - ret = iomap_page_mkwrite(vmf, &xfs_iomap_ops); - ret = block_page_mkwrite_return(ret); + if (write_fault) + ret = iomap_page_mkwrite(vmf, &xfs_iomap_ops); + else + ret = filemap_fault(vmf); } - xfs_iunlock(XFS_I(inode), XFS_MMAPLOCK_SHARED); - sb_end_pagefault(inode->i_sb); + if (write_fault) + sb_end_pagefault(inode->i_sb); return ret; } -STATIC int +static int xfs_filemap_fault( struct vm_fault *vmf) { - struct inode *inode = file_inode(vmf->vma->vm_file); - int ret; - - trace_xfs_filemap_fault(XFS_I(inode)); - /* DAX can shortcut the normal fault path on write faults! */ - if ((vmf->flags & FAULT_FLAG_WRITE) && IS_DAX(inode)) - return xfs_filemap_page_mkwrite(vmf); - - xfs_ilock(XFS_I(inode), XFS_MMAPLOCK_SHARED); - if (IS_DAX(inode)) - ret = dax_iomap_fault(vmf, PE_SIZE_PTE, &xfs_iomap_ops); - else - ret = filemap_fault(vmf); - xfs_iunlock(XFS_I(inode), XFS_MMAPLOCK_SHARED); - - return ret; + return __xfs_filemap_fault(vmf, PE_SIZE_PTE, + IS_DAX(file_inode(vmf->vma->vm_file)) && + (vmf->flags & FAULT_FLAG_WRITE)); } -/* - * Similar to xfs_filemap_fault(), the DAX fault path can call into here on - * both read and write faults. Hence we need to handle both cases. There is no - * ->huge_mkwrite callout for huge pages, so we have a single function here to - * handle both cases here. @flags carries the information on the type of fault - * occuring. - */ -STATIC int +static int xfs_filemap_huge_fault( struct vm_fault *vmf, enum page_entry_size pe_size) { - struct inode *inode = file_inode(vmf->vma->vm_file); - struct xfs_inode *ip = XFS_I(inode); - int ret; - - if (!IS_DAX(inode)) + if (!IS_DAX(file_inode(vmf->vma->vm_file))) return VM_FAULT_FALLBACK; - trace_xfs_filemap_huge_fault(ip); - - if (vmf->flags & FAULT_FLAG_WRITE) { - sb_start_pagefault(inode->i_sb); - file_update_time(vmf->vma->vm_file); - } - - xfs_ilock(XFS_I(inode), XFS_MMAPLOCK_SHARED); - ret = dax_iomap_fault(vmf, pe_size, &xfs_iomap_ops); - xfs_iunlock(XFS_I(inode), XFS_MMAPLOCK_SHARED); - - if (vmf->flags & FAULT_FLAG_WRITE) - sb_end_pagefault(inode->i_sb); + /* DAX can shortcut the normal fault path on write faults! */ + return __xfs_filemap_fault(vmf, pe_size, + (vmf->flags & FAULT_FLAG_WRITE)); +} - return ret; +static int +xfs_filemap_page_mkwrite( + struct vm_fault *vmf) +{ + return __xfs_filemap_fault(vmf, PE_SIZE_PTE, true); } /* @@ -1130,7 +1101,7 @@ xfs_filemap_pfn_mkwrite( if (vmf->pgoff >= size) ret = VM_FAULT_SIGBUS; else if (IS_DAX(inode)) - ret = dax_pfn_mkwrite(vmf); + ret = dax_iomap_fault(vmf, PE_SIZE_PTE, &xfs_iomap_ops); xfs_iunlock(ip, XFS_MMAPLOCK_SHARED); sb_end_pagefault(inode->i_sb); return ret; diff --git a/fs/xfs/xfs_icache.c b/fs/xfs/xfs_icache.c index 0a9e6985a0d0..34227115a5d6 100644 --- a/fs/xfs/xfs_icache.c +++ b/fs/xfs/xfs_icache.c @@ -1124,11 +1124,11 @@ reclaim: * Because we use RCU freeing we need to ensure the inode always appears * to be reclaimed with an invalid inode number when in the free state. * We do this as early as possible under the ILOCK so that - * xfs_iflush_cluster() can be guaranteed to detect races with us here. - * By doing this, we guarantee that once xfs_iflush_cluster has locked - * XFS_ILOCK that it will see either a valid, flushable inode that will - * serialise correctly, or it will see a clean (and invalid) inode that - * it can skip. + * xfs_iflush_cluster() and xfs_ifree_cluster() can be guaranteed to + * detect races with us here. By doing this, we guarantee that once + * xfs_iflush_cluster() or xfs_ifree_cluster() has locked XFS_ILOCK that + * it will see either a valid inode that will serialise correctly, or it + * will see an invalid inode that it can skip. */ spin_lock(&ip->i_flags_lock); ip->i_flags = XFS_IRECLAIM; diff --git a/fs/xfs/xfs_inode.c b/fs/xfs/xfs_inode.c index ff48f0096810..5599dda4727a 100644 --- a/fs/xfs/xfs_inode.c +++ b/fs/xfs/xfs_inode.c @@ -1055,7 +1055,7 @@ xfs_dir_ialloc( tp->t_flags &= ~(XFS_TRANS_DQ_DIRTY); } - code = xfs_trans_roll(&tp, NULL); + code = xfs_trans_roll(&tp); if (committed != NULL) *committed = 1; @@ -1285,7 +1285,7 @@ xfs_create( */ xfs_qm_vop_create_dqattach(tp, ip, udqp, gdqp, pdqp); - error = xfs_defer_finish(&tp, &dfops, NULL); + error = xfs_defer_finish(&tp, &dfops); if (error) goto out_bmap_cancel; @@ -1513,7 +1513,7 @@ xfs_link( if (mp->m_flags & (XFS_MOUNT_WSYNC|XFS_MOUNT_DIRSYNC)) xfs_trans_set_sync(tp); - error = xfs_defer_finish(&tp, &dfops, NULL); + error = xfs_defer_finish(&tp, &dfops); if (error) { xfs_defer_cancel(&dfops); goto error_return; @@ -1607,11 +1607,12 @@ xfs_itruncate_extents( * Duplicate the transaction that has the permanent * reservation and commit the old transaction. */ - error = xfs_defer_finish(&tp, &dfops, ip); + xfs_defer_ijoin(&dfops, ip); + error = xfs_defer_finish(&tp, &dfops); if (error) goto out_bmap_cancel; - error = xfs_trans_roll(&tp, ip); + error = xfs_trans_roll_inode(&tp, ip); if (error) goto out; } @@ -1855,7 +1856,7 @@ xfs_inactive_ifree( * Just ignore errors at this point. There is nothing we can do except * to try to keep going. Make sure it's not a silent error. */ - error = xfs_defer_finish(&tp, &dfops, NULL); + error = xfs_defer_finish(&tp, &dfops); if (error) { xfs_notice(mp, "%s: xfs_defer_finish returned error %d", __func__, error); @@ -2359,11 +2360,24 @@ retry: * already marked stale. If we can't lock it, back off * and retry. */ - if (ip != free_ip && - !xfs_ilock_nowait(ip, XFS_ILOCK_EXCL)) { - rcu_read_unlock(); - delay(1); - goto retry; + if (ip != free_ip) { + if (!xfs_ilock_nowait(ip, XFS_ILOCK_EXCL)) { + rcu_read_unlock(); + delay(1); + goto retry; + } + + /* + * Check the inode number again in case we're + * racing with freeing in xfs_reclaim_inode(). + * See the comments in that function for more + * information as to why the initial check is + * not sufficient. + */ + if (ip->i_ino != inum + i) { + xfs_iunlock(ip, XFS_ILOCK_EXCL); + continue; + } } rcu_read_unlock(); @@ -2637,7 +2651,7 @@ xfs_remove( if (mp->m_flags & (XFS_MOUNT_WSYNC|XFS_MOUNT_DIRSYNC)) xfs_trans_set_sync(tp); - error = xfs_defer_finish(&tp, &dfops, NULL); + error = xfs_defer_finish(&tp, &dfops); if (error) goto out_bmap_cancel; @@ -2723,7 +2737,7 @@ xfs_finish_rename( if (tp->t_mountp->m_flags & (XFS_MOUNT_WSYNC|XFS_MOUNT_DIRSYNC)) xfs_trans_set_sync(tp); - error = xfs_defer_finish(&tp, dfops, NULL); + error = xfs_defer_finish(&tp, dfops); if (error) { xfs_defer_cancel(dfops); xfs_trans_cancel(tp); diff --git a/fs/xfs/xfs_inode_item.c b/fs/xfs/xfs_inode_item.c index 013cc78d7daf..6d0f74ec31e8 100644 --- a/fs/xfs/xfs_inode_item.c +++ b/fs/xfs/xfs_inode_item.c @@ -27,6 +27,7 @@ #include "xfs_error.h" #include "xfs_trace.h" #include "xfs_trans_priv.h" +#include "xfs_buf_item.h" #include "xfs_log.h" @@ -475,6 +476,23 @@ xfs_inode_item_unpin( wake_up_bit(&ip->i_flags, __XFS_IPINNED_BIT); } +/* + * Callback used to mark a buffer with XFS_LI_FAILED when items in the buffer + * have been failed during writeback + * + * This informs the AIL that the inode is already flush locked on the next push, + * and acquires a hold on the buffer to ensure that it isn't reclaimed before + * dirty data makes it to disk. + */ +STATIC void +xfs_inode_item_error( + struct xfs_log_item *lip, + struct xfs_buf *bp) +{ + ASSERT(xfs_isiflocked(INODE_ITEM(lip)->ili_inode)); + xfs_set_li_failed(lip, bp); +} + STATIC uint xfs_inode_item_push( struct xfs_log_item *lip, @@ -484,13 +502,28 @@ xfs_inode_item_push( { struct xfs_inode_log_item *iip = INODE_ITEM(lip); struct xfs_inode *ip = iip->ili_inode; - struct xfs_buf *bp = NULL; + struct xfs_buf *bp = lip->li_buf; uint rval = XFS_ITEM_SUCCESS; int error; if (xfs_ipincount(ip) > 0) return XFS_ITEM_PINNED; + /* + * The buffer containing this item failed to be written back + * previously. Resubmit the buffer for IO. + */ + if (lip->li_flags & XFS_LI_FAILED) { + if (!xfs_buf_trylock(bp)) + return XFS_ITEM_LOCKED; + + if (!xfs_buf_resubmit_failed_buffers(bp, lip, buffer_list)) + rval = XFS_ITEM_FLUSHING; + + xfs_buf_unlock(bp); + return rval; + } + if (!xfs_ilock_nowait(ip, XFS_ILOCK_SHARED)) return XFS_ITEM_LOCKED; @@ -622,7 +655,8 @@ static const struct xfs_item_ops xfs_inode_item_ops = { .iop_unlock = xfs_inode_item_unlock, .iop_committed = xfs_inode_item_committed, .iop_push = xfs_inode_item_push, - .iop_committing = xfs_inode_item_committing + .iop_committing = xfs_inode_item_committing, + .iop_error = xfs_inode_item_error }; @@ -710,7 +744,8 @@ xfs_iflush_done( * the AIL lock. */ iip = INODE_ITEM(blip); - if (iip->ili_logged && blip->li_lsn == iip->ili_flush_lsn) + if ((iip->ili_logged && blip->li_lsn == iip->ili_flush_lsn) || + lip->li_flags & XFS_LI_FAILED) need_ail++; blip = next; @@ -718,7 +753,8 @@ xfs_iflush_done( /* make sure we capture the state of the initial inode. */ iip = INODE_ITEM(lip); - if (iip->ili_logged && lip->li_lsn == iip->ili_flush_lsn) + if ((iip->ili_logged && lip->li_lsn == iip->ili_flush_lsn) || + lip->li_flags & XFS_LI_FAILED) need_ail++; /* @@ -739,6 +775,9 @@ xfs_iflush_done( if (INODE_ITEM(blip)->ili_logged && blip->li_lsn == INODE_ITEM(blip)->ili_flush_lsn) mlip_changed |= xfs_ail_delete_one(ailp, blip); + else { + xfs_clear_li_failed(blip); + } } if (mlip_changed) { diff --git a/fs/xfs/xfs_ioctl.c b/fs/xfs/xfs_ioctl.c index 9c0c7a920304..5049e8ab6e30 100644 --- a/fs/xfs/xfs_ioctl.c +++ b/fs/xfs/xfs_ioctl.c @@ -931,16 +931,15 @@ xfs_ioc_fsgetxattr( return 0; } -STATIC void -xfs_set_diflags( +STATIC uint16_t +xfs_flags2diflags( struct xfs_inode *ip, unsigned int xflags) { - unsigned int di_flags; - uint64_t di_flags2; - /* can't set PREALLOC this way, just preserve it */ - di_flags = (ip->i_d.di_flags & XFS_DIFLAG_PREALLOC); + uint16_t di_flags = + (ip->i_d.di_flags & XFS_DIFLAG_PREALLOC); + if (xflags & FS_XFLAG_IMMUTABLE) di_flags |= XFS_DIFLAG_IMMUTABLE; if (xflags & FS_XFLAG_APPEND) @@ -970,19 +969,24 @@ xfs_set_diflags( if (xflags & FS_XFLAG_EXTSIZE) di_flags |= XFS_DIFLAG_EXTSIZE; } - ip->i_d.di_flags = di_flags; - /* diflags2 only valid for v3 inodes. */ - if (ip->i_d.di_version < 3) - return; + return di_flags; +} + +STATIC uint64_t +xfs_flags2diflags2( + struct xfs_inode *ip, + unsigned int xflags) +{ + uint64_t di_flags2 = + (ip->i_d.di_flags2 & XFS_DIFLAG2_REFLINK); - di_flags2 = (ip->i_d.di_flags2 & XFS_DIFLAG2_REFLINK); if (xflags & FS_XFLAG_DAX) di_flags2 |= XFS_DIFLAG2_DAX; if (xflags & FS_XFLAG_COWEXTSIZE) di_flags2 |= XFS_DIFLAG2_COWEXTSIZE; - ip->i_d.di_flags2 = di_flags2; + return di_flags2; } STATIC void @@ -1008,11 +1012,12 @@ xfs_diflags_to_linux( inode->i_flags |= S_NOATIME; else inode->i_flags &= ~S_NOATIME; +#if 0 /* disabled until the flag switching races are sorted out */ if (xflags & FS_XFLAG_DAX) inode->i_flags |= S_DAX; else inode->i_flags &= ~S_DAX; - +#endif } static int @@ -1022,6 +1027,7 @@ xfs_ioctl_setattr_xflags( struct fsxattr *fa) { struct xfs_mount *mp = ip->i_mount; + uint64_t di_flags2; /* Can't change realtime flag if any extents are allocated. */ if ((ip->i_d.di_nextents || ip->i_delayed_blks) && @@ -1052,7 +1058,14 @@ xfs_ioctl_setattr_xflags( !capable(CAP_LINUX_IMMUTABLE)) return -EPERM; - xfs_set_diflags(ip, fa->fsx_xflags); + /* diflags2 only valid for v3 inodes. */ + di_flags2 = xfs_flags2diflags2(ip, fa->fsx_xflags); + if (di_flags2 && ip->i_d.di_version < 3) + return -EINVAL; + + ip->i_d.di_flags = xfs_flags2diflags(ip, fa->fsx_xflags); + ip->i_d.di_flags2 = di_flags2; + xfs_diflags_to_linux(ip); xfs_trans_ichgtime(tp, ip, XFS_ICHGTIME_CHG); xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE); diff --git a/fs/xfs/xfs_iomap.c b/fs/xfs/xfs_iomap.c index 813394c62849..79cb5b3d140c 100644 --- a/fs/xfs/xfs_iomap.c +++ b/fs/xfs/xfs_iomap.c @@ -274,7 +274,7 @@ xfs_iomap_write_direct( /* * Complete the transaction */ - error = xfs_defer_finish(&tp, &dfops, NULL); + error = xfs_defer_finish(&tp, &dfops); if (error) goto out_bmap_cancel; @@ -520,7 +520,6 @@ xfs_file_iomap_begin_delay( struct inode *inode, loff_t offset, loff_t count, - unsigned flags, struct iomap *iomap) { struct xfs_inode *ip = XFS_I(inode); @@ -784,7 +783,7 @@ xfs_iomap_write_allocate( if (error) goto trans_cancel; - error = xfs_defer_finish(&tp, &dfops, NULL); + error = xfs_defer_finish(&tp, &dfops); if (error) goto trans_cancel; @@ -906,7 +905,7 @@ xfs_iomap_write_unwritten( xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE); } - error = xfs_defer_finish(&tp, &dfops, NULL); + error = xfs_defer_finish(&tp, &dfops); if (error) goto error_on_bmapi_transaction; @@ -984,8 +983,7 @@ xfs_file_iomap_begin( if (((flags & (IOMAP_WRITE | IOMAP_DIRECT)) == IOMAP_WRITE) && !IS_DAX(inode) && !xfs_get_extsz_hint(ip)) { /* Reserve delalloc blocks for regular writeback. */ - return xfs_file_iomap_begin_delay(inode, offset, length, flags, - iomap); + return xfs_file_iomap_begin_delay(inode, offset, length, iomap); } if (need_excl_ilock(ip, flags)) { diff --git a/fs/xfs/xfs_iops.c b/fs/xfs/xfs_iops.c index 469c9fa4c178..17081c77ef86 100644 --- a/fs/xfs/xfs_iops.c +++ b/fs/xfs/xfs_iops.c @@ -817,7 +817,7 @@ xfs_vn_setattr_nonsize( * Caution: The caller of this function is responsible for calling * setattr_prepare() or otherwise verifying the change is fine. */ -int +STATIC int xfs_setattr_size( struct xfs_inode *ip, struct iattr *iattr) diff --git a/fs/xfs/xfs_log.c b/fs/xfs/xfs_log.c index 0053bcf2b10a..c5107c7bc4bf 100644 --- a/fs/xfs/xfs_log.c +++ b/fs/xfs/xfs_log.c @@ -743,15 +743,45 @@ xfs_log_mount_finish( struct xfs_mount *mp) { int error = 0; + bool readonly = (mp->m_flags & XFS_MOUNT_RDONLY); if (mp->m_flags & XFS_MOUNT_NORECOVERY) { ASSERT(mp->m_flags & XFS_MOUNT_RDONLY); return 0; + } else if (readonly) { + /* Allow unlinked processing to proceed */ + mp->m_flags &= ~XFS_MOUNT_RDONLY; } + /* + * During the second phase of log recovery, we need iget and + * iput to behave like they do for an active filesystem. + * xfs_fs_drop_inode needs to be able to prevent the deletion + * of inodes before we're done replaying log items on those + * inodes. Turn it off immediately after recovery finishes + * so that we don't leak the quota inodes if subsequent mount + * activities fail. + * + * We let all inodes involved in redo item processing end up on + * the LRU instead of being evicted immediately so that if we do + * something to an unlinked inode, the irele won't cause + * premature truncation and freeing of the inode, which results + * in log recovery failure. We have to evict the unreferenced + * lru inodes after clearing MS_ACTIVE because we don't + * otherwise clean up the lru if there's a subsequent failure in + * xfs_mountfs, which leads to us leaking the inodes if nothing + * else (e.g. quotacheck) references the inodes before the + * mount failure occurs. + */ + mp->m_super->s_flags |= MS_ACTIVE; error = xlog_recover_finish(mp->m_log); if (!error) xfs_log_work_queue(mp); + mp->m_super->s_flags &= ~MS_ACTIVE; + evict_inodes(mp->m_super); + + if (readonly) + mp->m_flags |= XFS_MOUNT_RDONLY; return error; } @@ -801,11 +831,14 @@ xfs_log_unmount_write(xfs_mount_t *mp) int error; /* - * Don't write out unmount record on read-only mounts. + * Don't write out unmount record on norecovery mounts or ro devices. * Or, if we are doing a forced umount (typically because of IO errors). */ - if (mp->m_flags & XFS_MOUNT_RDONLY) + if (mp->m_flags & XFS_MOUNT_NORECOVERY || + xfs_readonly_buftarg(log->l_mp->m_logdev_targp)) { + ASSERT(mp->m_flags & XFS_MOUNT_RDONLY); return 0; + } error = _xfs_log_force(mp, XFS_LOG_SYNC, NULL); ASSERT(error || !(XLOG_FORCED_SHUTDOWN(log))); @@ -3342,8 +3375,6 @@ maybe_sleep: */ if (iclog->ic_state & XLOG_STATE_IOERROR) return -EIO; - if (log_flushed) - *log_flushed = 1; } else { no_sleep: @@ -3447,8 +3478,6 @@ try_again: xlog_wait(&iclog->ic_prev->ic_write_wait, &log->l_icloglock); - if (log_flushed) - *log_flushed = 1; already_slept = 1; goto try_again; } @@ -3482,9 +3511,6 @@ try_again: */ if (iclog->ic_state & XLOG_STATE_IOERROR) return -EIO; - - if (log_flushed) - *log_flushed = 1; } else { /* just return */ spin_unlock(&log->l_icloglock); } diff --git a/fs/xfs/xfs_log_recover.c b/fs/xfs/xfs_log_recover.c index 9549188f5a36..ee34899396b2 100644 --- a/fs/xfs/xfs_log_recover.c +++ b/fs/xfs/xfs_log_recover.c @@ -1029,61 +1029,106 @@ out_error: } /* - * Check the log tail for torn writes. This is required when torn writes are - * detected at the head and the head had to be walked back to a previous record. - * The tail of the previous record must now be verified to ensure the torn - * writes didn't corrupt the previous tail. + * Calculate distance from head to tail (i.e., unused space in the log). + */ +static inline int +xlog_tail_distance( + struct xlog *log, + xfs_daddr_t head_blk, + xfs_daddr_t tail_blk) +{ + if (head_blk < tail_blk) + return tail_blk - head_blk; + + return tail_blk + (log->l_logBBsize - head_blk); +} + +/* + * Verify the log tail. This is particularly important when torn or incomplete + * writes have been detected near the front of the log and the head has been + * walked back accordingly. + * + * We also have to handle the case where the tail was pinned and the head + * blocked behind the tail right before a crash. If the tail had been pushed + * immediately prior to the crash and the subsequent checkpoint was only + * partially written, it's possible it overwrote the last referenced tail in the + * log with garbage. This is not a coherency problem because the tail must have + * been pushed before it can be overwritten, but appears as log corruption to + * recovery because we have no way to know the tail was updated if the + * subsequent checkpoint didn't write successfully. * - * Return an error if CRC verification fails as recovery cannot proceed. + * Therefore, CRC check the log from tail to head. If a failure occurs and the + * offending record is within max iclog bufs from the head, walk the tail + * forward and retry until a valid tail is found or corruption is detected out + * of the range of a possible overwrite. */ STATIC int xlog_verify_tail( struct xlog *log, xfs_daddr_t head_blk, - xfs_daddr_t tail_blk) + xfs_daddr_t *tail_blk, + int hsize) { struct xlog_rec_header *thead; struct xfs_buf *bp; xfs_daddr_t first_bad; - int count; int error = 0; bool wrapped; - xfs_daddr_t tmp_head; + xfs_daddr_t tmp_tail; + xfs_daddr_t orig_tail = *tail_blk; bp = xlog_get_bp(log, 1); if (!bp) return -ENOMEM; /* - * Seek XLOG_MAX_ICLOGS + 1 records past the current tail record to get - * a temporary head block that points after the last possible - * concurrently written record of the tail. + * Make sure the tail points to a record (returns positive count on + * success). */ - count = xlog_seek_logrec_hdr(log, head_blk, tail_blk, - XLOG_MAX_ICLOGS + 1, bp, &tmp_head, &thead, - &wrapped); - if (count < 0) { - error = count; + error = xlog_seek_logrec_hdr(log, head_blk, *tail_blk, 1, bp, + &tmp_tail, &thead, &wrapped); + if (error < 0) goto out; - } - - /* - * If the call above didn't find XLOG_MAX_ICLOGS + 1 records, we ran - * into the actual log head. tmp_head points to the start of the record - * so update it to the actual head block. - */ - if (count < XLOG_MAX_ICLOGS + 1) - tmp_head = head_blk; + if (*tail_blk != tmp_tail) + *tail_blk = tmp_tail; /* - * We now have a tail and temporary head block that covers at least - * XLOG_MAX_ICLOGS records from the tail. We need to verify that these - * records were completely written. Run a CRC verification pass from - * tail to head and return the result. + * Run a CRC check from the tail to the head. We can't just check + * MAX_ICLOGS records past the tail because the tail may point to stale + * blocks cleared during the search for the head/tail. These blocks are + * overwritten with zero-length records and thus record count is not a + * reliable indicator of the iclog state before a crash. */ - error = xlog_do_recovery_pass(log, tmp_head, tail_blk, + first_bad = 0; + error = xlog_do_recovery_pass(log, head_blk, *tail_blk, XLOG_RECOVER_CRCPASS, &first_bad); + while ((error == -EFSBADCRC || error == -EFSCORRUPTED) && first_bad) { + int tail_distance; + + /* + * Is corruption within range of the head? If so, retry from + * the next record. Otherwise return an error. + */ + tail_distance = xlog_tail_distance(log, head_blk, first_bad); + if (tail_distance > BTOBB(XLOG_MAX_ICLOGS * hsize)) + break; + /* skip to the next record; returns positive count on success */ + error = xlog_seek_logrec_hdr(log, head_blk, first_bad, 2, bp, + &tmp_tail, &thead, &wrapped); + if (error < 0) + goto out; + + *tail_blk = tmp_tail; + first_bad = 0; + error = xlog_do_recovery_pass(log, head_blk, *tail_blk, + XLOG_RECOVER_CRCPASS, &first_bad); + } + + if (!error && *tail_blk != orig_tail) + xfs_warn(log->l_mp, + "Tail block (0x%llx) overwrite detected. Updated to 0x%llx", + orig_tail, *tail_blk); out: xlog_put_bp(bp); return error; @@ -1143,7 +1188,7 @@ xlog_verify_head( */ error = xlog_do_recovery_pass(log, *head_blk, tmp_rhead_blk, XLOG_RECOVER_CRCPASS, &first_bad); - if (error == -EFSBADCRC) { + if ((error == -EFSBADCRC || error == -EFSCORRUPTED) && first_bad) { /* * We've hit a potential torn write. Reset the error and warn * about it. @@ -1183,31 +1228,12 @@ xlog_verify_head( ASSERT(0); return 0; } - - /* - * Now verify the tail based on the updated head. This is - * required because the torn writes trimmed from the head could - * have been written over the tail of a previous record. Return - * any errors since recovery cannot proceed if the tail is - * corrupt. - * - * XXX: This leaves a gap in truly robust protection from torn - * writes in the log. If the head is behind the tail, the tail - * pushes forward to create some space and then a crash occurs - * causing the writes into the previous record's tail region to - * tear, log recovery isn't able to recover. - * - * How likely is this to occur? If possible, can we do something - * more intelligent here? Is it safe to push the tail forward if - * we can determine that the tail is within the range of the - * torn write (e.g., the kernel can only overwrite the tail if - * it has actually been pushed forward)? Alternatively, could we - * somehow prevent this condition at runtime? - */ - error = xlog_verify_tail(log, *head_blk, *tail_blk); } + if (error) + return error; - return error; + return xlog_verify_tail(log, *head_blk, tail_blk, + be32_to_cpu((*rhead)->h_size)); } /* @@ -4801,12 +4827,16 @@ xlog_recover_process_intents( int error = 0; struct xfs_ail_cursor cur; struct xfs_ail *ailp; +#if defined(DEBUG) || defined(XFS_WARN) xfs_lsn_t last_lsn; +#endif ailp = log->l_ailp; spin_lock(&ailp->xa_lock); lip = xfs_trans_ail_cursor_first(ailp, &cur, 0); +#if defined(DEBUG) || defined(XFS_WARN) last_lsn = xlog_assign_lsn(log->l_curr_cycle, log->l_curr_block); +#endif while (lip != NULL) { /* * We're done when we see something other than an intent. @@ -5218,7 +5248,7 @@ xlog_do_recovery_pass( xfs_daddr_t *first_bad) /* out: first bad log rec */ { xlog_rec_header_t *rhead; - xfs_daddr_t blk_no; + xfs_daddr_t blk_no, rblk_no; xfs_daddr_t rhead_blk; char *offset; xfs_buf_t *hbp, *dbp; @@ -5231,7 +5261,7 @@ xlog_do_recovery_pass( LIST_HEAD (buffer_list); ASSERT(head_blk != tail_blk); - rhead_blk = 0; + blk_no = rhead_blk = tail_blk; for (i = 0; i < XLOG_RHASH_SIZE; i++) INIT_HLIST_HEAD(&rhash[i]); @@ -5309,7 +5339,6 @@ xlog_do_recovery_pass( } memset(rhash, 0, sizeof(rhash)); - blk_no = rhead_blk = tail_blk; if (tail_blk > head_blk) { /* * Perform recovery around the end of the physical log. @@ -5371,9 +5400,19 @@ xlog_do_recovery_pass( bblks = (int)BTOBB(be32_to_cpu(rhead->h_len)); blk_no += hblks; - /* Read in data for log record */ - if (blk_no + bblks <= log->l_logBBsize) { - error = xlog_bread(log, blk_no, bblks, dbp, + /* + * Read the log record data in multiple reads if it + * wraps around the end of the log. Note that if the + * header already wrapped, blk_no could point past the + * end of the log. The record data is contiguous in + * that case. + */ + if (blk_no + bblks <= log->l_logBBsize || + blk_no >= log->l_logBBsize) { + /* mod blk_no in case the header wrapped and + * pushed it beyond the end of the log */ + rblk_no = do_mod(blk_no, log->l_logBBsize); + error = xlog_bread(log, rblk_no, bblks, dbp, &offset); if (error) goto bread_err2; @@ -5563,6 +5602,8 @@ xlog_do_recover( xfs_buf_t *bp; xfs_sb_t *sbp; + trace_xfs_log_recover(log, head_blk, tail_blk); + /* * First replay the images in the log. */ diff --git a/fs/xfs/xfs_mount.c b/fs/xfs/xfs_mount.c index 40d4e8b4e193..ea7d4b4e50d0 100644 --- a/fs/xfs/xfs_mount.c +++ b/fs/xfs/xfs_mount.c @@ -945,15 +945,6 @@ xfs_mountfs( } /* - * During the second phase of log recovery, we need iget and - * iput to behave like they do for an active filesystem. - * xfs_fs_drop_inode needs to be able to prevent the deletion - * of inodes before we're done replaying log items on those - * inodes. - */ - mp->m_super->s_flags |= MS_ACTIVE; - - /* * Finish recovering the file system. This part needed to be delayed * until after the root and real-time bitmap inodes were consistently * read in. @@ -1028,12 +1019,13 @@ xfs_mountfs( out_quota: xfs_qm_unmount_quotas(mp); out_rtunmount: - mp->m_super->s_flags &= ~MS_ACTIVE; xfs_rtunmount_inodes(mp); out_rele_rip: IRELE(rip); cancel_delayed_work_sync(&mp->m_reclaim_work); xfs_reclaim_inodes(mp, SYNC_WAIT); + /* Clean out dquots that might be in memory after quotacheck. */ + xfs_qm_unmount(mp); out_log_dealloc: mp->m_flags |= XFS_MOUNT_UNMOUNTING; xfs_log_mount_cancel(mp); diff --git a/fs/xfs/xfs_qm.c b/fs/xfs/xfs_qm.c index 15751dc2a27d..010a13a201aa 100644 --- a/fs/xfs/xfs_qm.c +++ b/fs/xfs/xfs_qm.c @@ -31,6 +31,7 @@ #include "xfs_error.h" #include "xfs_bmap.h" #include "xfs_bmap_btree.h" +#include "xfs_bmap_util.h" #include "xfs_trans.h" #include "xfs_trans_space.h" #include "xfs_qm.h" @@ -1120,31 +1121,6 @@ xfs_qm_quotacheck_dqadjust( return 0; } -STATIC int -xfs_qm_get_rtblks( - xfs_inode_t *ip, - xfs_qcnt_t *O_rtblks) -{ - xfs_filblks_t rtblks; /* total rt blks */ - xfs_extnum_t idx; /* extent record index */ - xfs_ifork_t *ifp; /* inode fork pointer */ - xfs_extnum_t nextents; /* number of extent entries */ - int error; - - ASSERT(XFS_IS_REALTIME_INODE(ip)); - ifp = XFS_IFORK_PTR(ip, XFS_DATA_FORK); - if (!(ifp->if_flags & XFS_IFEXTENTS)) { - if ((error = xfs_iread_extents(NULL, ip, XFS_DATA_FORK))) - return error; - } - rtblks = 0; - nextents = xfs_iext_count(ifp); - for (idx = 0; idx < nextents; idx++) - rtblks += xfs_bmbt_get_blockcount(xfs_iext_get_ext(ifp, idx)); - *O_rtblks = (xfs_qcnt_t)rtblks; - return 0; -} - /* * callback routine supplied to bulkstat(). Given an inumber, find its * dquots and update them to account for resources taken by that inode. @@ -1160,7 +1136,8 @@ xfs_qm_dqusage_adjust( int *res) /* result code value */ { xfs_inode_t *ip; - xfs_qcnt_t nblks, rtblks = 0; + xfs_qcnt_t nblks; + xfs_filblks_t rtblks = 0; /* total rt blks */ int error; ASSERT(XFS_IS_QUOTA_RUNNING(mp)); @@ -1190,12 +1167,15 @@ xfs_qm_dqusage_adjust( ASSERT(ip->i_delayed_blks == 0); if (XFS_IS_REALTIME_INODE(ip)) { - /* - * Walk thru the extent list and count the realtime blocks. - */ - error = xfs_qm_get_rtblks(ip, &rtblks); - if (error) - goto error0; + struct xfs_ifork *ifp = XFS_IFORK_PTR(ip, XFS_DATA_FORK); + + if (!(ifp->if_flags & XFS_IFEXTENTS)) { + error = xfs_iread_extents(NULL, ip, XFS_DATA_FORK); + if (error) + goto error0; + } + + xfs_bmap_count_leaves(ifp, &rtblks); } nblks = (xfs_qcnt_t)ip->i_d.di_nblocks - rtblks; diff --git a/fs/xfs/xfs_refcount_item.c b/fs/xfs/xfs_refcount_item.c index 96fe209b5eb6..8f2e2fac4255 100644 --- a/fs/xfs/xfs_refcount_item.c +++ b/fs/xfs/xfs_refcount_item.c @@ -525,7 +525,7 @@ xfs_cui_recover( } xfs_refcount_finish_one_cleanup(tp, rcur, error); - error = xfs_defer_finish(&tp, &dfops, NULL); + error = xfs_defer_finish(&tp, &dfops); if (error) goto abort_defer; set_bit(XFS_CUI_RECOVERED, &cuip->cui_flags); diff --git a/fs/xfs/xfs_reflink.c b/fs/xfs/xfs_reflink.c index f45fbf0db9bb..3246815c24d6 100644 --- a/fs/xfs/xfs_reflink.c +++ b/fs/xfs/xfs_reflink.c @@ -464,7 +464,7 @@ retry: goto out_bmap_cancel; /* Finish up. */ - error = xfs_defer_finish(&tp, &dfops, NULL); + error = xfs_defer_finish(&tp, &dfops); if (error) goto out_bmap_cancel; @@ -602,7 +602,8 @@ xfs_reflink_cancel_cow_blocks( -(long)del.br_blockcount); /* Roll the transaction */ - error = xfs_defer_finish(tpp, &dfops, ip); + xfs_defer_ijoin(&dfops, ip); + error = xfs_defer_finish(tpp, &dfops); if (error) { xfs_defer_cancel(&dfops); break; @@ -791,7 +792,8 @@ xfs_reflink_end_cow( /* Remove the mapping from the CoW fork. */ xfs_bmap_del_extent_cow(ip, &idx, &got, &del); - error = xfs_defer_finish(&tp, &dfops, ip); + xfs_defer_ijoin(&dfops, ip); + error = xfs_defer_finish(&tp, &dfops); if (error) goto out_defer; next_extent: @@ -1152,7 +1154,8 @@ xfs_reflink_remap_extent( next_extent: /* Process all the deferred stuff. */ - error = xfs_defer_finish(&tp, &dfops, ip); + xfs_defer_ijoin(&dfops, ip); + error = xfs_defer_finish(&tp, &dfops); if (error) goto out_defer; } diff --git a/fs/xfs/xfs_rtalloc.c b/fs/xfs/xfs_rtalloc.c index 91472193643b..488719d43ca8 100644 --- a/fs/xfs/xfs_rtalloc.c +++ b/fs/xfs/xfs_rtalloc.c @@ -810,7 +810,7 @@ xfs_growfs_rt_alloc( /* * Free any blocks freed up in the transaction, then commit. */ - error = xfs_defer_finish(&tp, &dfops, NULL); + error = xfs_defer_finish(&tp, &dfops); if (error) goto out_bmap_cancel; error = xfs_trans_commit(tp); diff --git a/fs/xfs/xfs_super.c b/fs/xfs/xfs_super.c index 38aaacdbb8b3..c1c4c2ea1014 100644 --- a/fs/xfs/xfs_super.c +++ b/fs/xfs/xfs_super.c @@ -1220,7 +1220,7 @@ xfs_test_remount_options( tmp_mp->m_super = sb; error = xfs_parseargs(tmp_mp, options); xfs_free_fsname(tmp_mp); - kfree(tmp_mp); + kmem_free(tmp_mp); return error; } diff --git a/fs/xfs/xfs_symlink.c b/fs/xfs/xfs_symlink.c index 23a50d7aa46a..68d3ca2c4968 100644 --- a/fs/xfs/xfs_symlink.c +++ b/fs/xfs/xfs_symlink.c @@ -378,7 +378,7 @@ xfs_symlink( xfs_trans_set_sync(tp); } - error = xfs_defer_finish(&tp, &dfops, NULL); + error = xfs_defer_finish(&tp, &dfops); if (error) goto out_bmap_cancel; @@ -497,7 +497,8 @@ xfs_inactive_symlink_rmt( /* * Commit the first transaction. This logs the EFI and the inode. */ - error = xfs_defer_finish(&tp, &dfops, ip); + xfs_defer_ijoin(&dfops, ip); + error = xfs_defer_finish(&tp, &dfops); if (error) goto error_bmap_cancel; /* diff --git a/fs/xfs/xfs_trace.h b/fs/xfs/xfs_trace.h index bcc3cdf8e1c5..bb5514688d47 100644 --- a/fs/xfs/xfs_trace.h +++ b/fs/xfs/xfs_trace.h @@ -517,7 +517,6 @@ DEFINE_BUF_ITEM_EVENT(xfs_buf_item_size); DEFINE_BUF_ITEM_EVENT(xfs_buf_item_size_ordered); DEFINE_BUF_ITEM_EVENT(xfs_buf_item_size_stale); DEFINE_BUF_ITEM_EVENT(xfs_buf_item_format); -DEFINE_BUF_ITEM_EVENT(xfs_buf_item_format_ordered); DEFINE_BUF_ITEM_EVENT(xfs_buf_item_format_stale); DEFINE_BUF_ITEM_EVENT(xfs_buf_item_ordered); DEFINE_BUF_ITEM_EVENT(xfs_buf_item_pin); @@ -689,11 +688,34 @@ DEFINE_INODE_EVENT(xfs_inode_set_cowblocks_tag); DEFINE_INODE_EVENT(xfs_inode_clear_cowblocks_tag); DEFINE_INODE_EVENT(xfs_inode_free_cowblocks_invalid); -DEFINE_INODE_EVENT(xfs_filemap_fault); -DEFINE_INODE_EVENT(xfs_filemap_huge_fault); -DEFINE_INODE_EVENT(xfs_filemap_page_mkwrite); DEFINE_INODE_EVENT(xfs_filemap_pfn_mkwrite); +TRACE_EVENT(xfs_filemap_fault, + TP_PROTO(struct xfs_inode *ip, enum page_entry_size pe_size, + bool write_fault), + TP_ARGS(ip, pe_size, write_fault), + TP_STRUCT__entry( + __field(dev_t, dev) + __field(xfs_ino_t, ino) + __field(enum page_entry_size, pe_size) + __field(bool, write_fault) + ), + TP_fast_assign( + __entry->dev = VFS_I(ip)->i_sb->s_dev; + __entry->ino = ip->i_ino; + __entry->pe_size = pe_size; + __entry->write_fault = write_fault; + ), + TP_printk("dev %d:%d ino 0x%llx %s write_fault %d", + MAJOR(__entry->dev), MINOR(__entry->dev), + __entry->ino, + __print_symbolic(__entry->pe_size, + { PE_SIZE_PTE, "PTE" }, + { PE_SIZE_PMD, "PMD" }, + { PE_SIZE_PUD, "PUD" }), + __entry->write_fault) +) + DECLARE_EVENT_CLASS(xfs_iref_class, TP_PROTO(struct xfs_inode *ip, unsigned long caller_ip), TP_ARGS(ip, caller_ip), @@ -1963,6 +1985,24 @@ DEFINE_EVENT(xfs_swap_extent_class, name, \ DEFINE_SWAPEXT_EVENT(xfs_swap_extent_before); DEFINE_SWAPEXT_EVENT(xfs_swap_extent_after); +TRACE_EVENT(xfs_log_recover, + TP_PROTO(struct xlog *log, xfs_daddr_t headblk, xfs_daddr_t tailblk), + TP_ARGS(log, headblk, tailblk), + TP_STRUCT__entry( + __field(dev_t, dev) + __field(xfs_daddr_t, headblk) + __field(xfs_daddr_t, tailblk) + ), + TP_fast_assign( + __entry->dev = log->l_mp->m_super->s_dev; + __entry->headblk = headblk; + __entry->tailblk = tailblk; + ), + TP_printk("dev %d:%d headblk 0x%llx tailblk 0x%llx", + MAJOR(__entry->dev), MINOR(__entry->dev), __entry->headblk, + __entry->tailblk) +) + TRACE_EVENT(xfs_log_recover_record, TP_PROTO(struct xlog *log, struct xlog_rec_header *rhead, int pass), TP_ARGS(log, rhead, pass), diff --git a/fs/xfs/xfs_trans.c b/fs/xfs/xfs_trans.c index 2011620008de..a87f657f59c9 100644 --- a/fs/xfs/xfs_trans.c +++ b/fs/xfs/xfs_trans.c @@ -1035,25 +1035,18 @@ xfs_trans_cancel( */ int xfs_trans_roll( - struct xfs_trans **tpp, - struct xfs_inode *dp) + struct xfs_trans **tpp) { - struct xfs_trans *trans; + struct xfs_trans *trans = *tpp; struct xfs_trans_res tres; int error; /* - * Ensure that the inode is always logged. - */ - trans = *tpp; - if (dp) - xfs_trans_log_inode(trans, dp, XFS_ILOG_CORE); - - /* * Copy the critical parameters from one trans to the next. */ tres.tr_logres = trans->t_log_res; tres.tr_logcount = trans->t_log_count; + *tpp = xfs_trans_dup(trans); /* @@ -1067,10 +1060,8 @@ xfs_trans_roll( if (error) return error; - trans = *tpp; - /* - * Reserve space in the log for th next transaction. + * Reserve space in the log for the next transaction. * This also pushes items in the "AIL", the list of logged items, * out to disk if they are taking up space at the tail of the log * that we want to use. This requires that either nothing be locked @@ -1078,14 +1069,5 @@ xfs_trans_roll( * the prior and the next transactions. */ tres.tr_logflags = XFS_TRANS_PERM_LOG_RES; - error = xfs_trans_reserve(trans, &tres, 0, 0); - /* - * Ensure that the inode is in the new transaction and locked. - */ - if (error) - return error; - - if (dp) - xfs_trans_ijoin(trans, dp, 0); - return 0; + return xfs_trans_reserve(*tpp, &tres, 0, 0); } diff --git a/fs/xfs/xfs_trans.h b/fs/xfs/xfs_trans.h index 6bdad6f58934..815b53d20e26 100644 --- a/fs/xfs/xfs_trans.h +++ b/fs/xfs/xfs_trans.h @@ -49,6 +49,7 @@ typedef struct xfs_log_item { struct xfs_ail *li_ailp; /* ptr to AIL */ uint li_type; /* item type */ uint li_flags; /* misc flags */ + struct xfs_buf *li_buf; /* real buffer pointer */ struct xfs_log_item *li_bio_list; /* buffer item list */ void (*li_cb)(struct xfs_buf *, struct xfs_log_item *); @@ -64,11 +65,13 @@ typedef struct xfs_log_item { } xfs_log_item_t; #define XFS_LI_IN_AIL 0x1 -#define XFS_LI_ABORTED 0x2 +#define XFS_LI_ABORTED 0x2 +#define XFS_LI_FAILED 0x4 #define XFS_LI_FLAGS \ { XFS_LI_IN_AIL, "IN_AIL" }, \ - { XFS_LI_ABORTED, "ABORTED" } + { XFS_LI_ABORTED, "ABORTED" }, \ + { XFS_LI_FAILED, "FAILED" } struct xfs_item_ops { void (*iop_size)(xfs_log_item_t *, int *, int *); @@ -79,6 +82,7 @@ struct xfs_item_ops { void (*iop_unlock)(xfs_log_item_t *); xfs_lsn_t (*iop_committed)(xfs_log_item_t *, xfs_lsn_t); void (*iop_committing)(xfs_log_item_t *, xfs_lsn_t); + void (*iop_error)(xfs_log_item_t *, xfs_buf_t *); }; void xfs_log_item_init(struct xfs_mount *mp, struct xfs_log_item *item, @@ -208,12 +212,14 @@ void xfs_trans_bhold_release(xfs_trans_t *, struct xfs_buf *); void xfs_trans_binval(xfs_trans_t *, struct xfs_buf *); void xfs_trans_inode_buf(xfs_trans_t *, struct xfs_buf *); void xfs_trans_stale_inode_buf(xfs_trans_t *, struct xfs_buf *); -void xfs_trans_ordered_buf(xfs_trans_t *, struct xfs_buf *); +bool xfs_trans_ordered_buf(xfs_trans_t *, struct xfs_buf *); void xfs_trans_dquot_buf(xfs_trans_t *, struct xfs_buf *, uint); void xfs_trans_inode_alloc_buf(xfs_trans_t *, struct xfs_buf *); void xfs_trans_ichgtime(struct xfs_trans *, struct xfs_inode *, int); void xfs_trans_ijoin(struct xfs_trans *, struct xfs_inode *, uint); -void xfs_trans_log_buf(xfs_trans_t *, struct xfs_buf *, uint, uint); +void xfs_trans_log_buf(struct xfs_trans *, struct xfs_buf *, uint, + uint); +void xfs_trans_dirty_buf(struct xfs_trans *, struct xfs_buf *); void xfs_trans_log_inode(xfs_trans_t *, struct xfs_inode *, uint); void xfs_extent_free_init_defer_op(void); @@ -224,7 +230,8 @@ int xfs_trans_free_extent(struct xfs_trans *, struct xfs_efd_log_item *, xfs_fsblock_t, xfs_extlen_t, struct xfs_owner_info *); int xfs_trans_commit(struct xfs_trans *); -int xfs_trans_roll(struct xfs_trans **, struct xfs_inode *); +int xfs_trans_roll(struct xfs_trans **); +int xfs_trans_roll_inode(struct xfs_trans **, struct xfs_inode *); void xfs_trans_cancel(xfs_trans_t *); int xfs_trans_ail_init(struct xfs_mount *); void xfs_trans_ail_destroy(struct xfs_mount *); diff --git a/fs/xfs/xfs_trans_ail.c b/fs/xfs/xfs_trans_ail.c index 9056c0f34a3c..354368a906e5 100644 --- a/fs/xfs/xfs_trans_ail.c +++ b/fs/xfs/xfs_trans_ail.c @@ -325,6 +325,21 @@ xfs_ail_delete( xfs_trans_ail_cursor_clear(ailp, lip); } +static inline uint +xfsaild_push_item( + struct xfs_ail *ailp, + struct xfs_log_item *lip) +{ + /* + * If log item pinning is enabled, skip the push and track the item as + * pinned. This can help induce head-behind-tail conditions. + */ + if (XFS_TEST_ERROR(false, ailp->xa_mount, XFS_ERRTAG_LOG_ITEM_PIN)) + return XFS_ITEM_PINNED; + + return lip->li_ops->iop_push(lip, &ailp->xa_buf_list); +} + static long xfsaild_push( struct xfs_ail *ailp) @@ -382,7 +397,7 @@ xfsaild_push( * rely on the AIL cursor implementation to be able to deal with * the dropped lock. */ - lock_result = lip->li_ops->iop_push(lip, &ailp->xa_buf_list); + lock_result = xfsaild_push_item(ailp, lip); switch (lock_result) { case XFS_ITEM_SUCCESS: XFS_STATS_INC(mp, xs_push_ail_success); @@ -687,12 +702,13 @@ xfs_trans_ail_update_bulk( bool xfs_ail_delete_one( struct xfs_ail *ailp, - struct xfs_log_item *lip) + struct xfs_log_item *lip) { struct xfs_log_item *mlip = xfs_ail_min(ailp); trace_xfs_ail_delete(lip, mlip->li_lsn, lip->li_lsn); xfs_ail_delete(ailp, lip); + xfs_clear_li_failed(lip); lip->li_flags &= ~XFS_LI_IN_AIL; lip->li_lsn = 0; diff --git a/fs/xfs/xfs_trans_buf.c b/fs/xfs/xfs_trans_buf.c index 86987d823d76..3ba7a96a8abd 100644 --- a/fs/xfs/xfs_trans_buf.c +++ b/fs/xfs/xfs_trans_buf.c @@ -435,7 +435,7 @@ xfs_trans_brelse(xfs_trans_t *tp, if (XFS_FORCED_SHUTDOWN(tp->t_mountp) && freed) { xfs_trans_ail_remove(&bip->bli_item, SHUTDOWN_LOG_IO_ERROR); xfs_buf_item_relse(bp); - } else if (!xfs_buf_item_dirty(bip)) { + } else if (!(bip->bli_flags & XFS_BLI_DIRTY)) { /*** ASSERT(bp->b_pincount == 0); ***/ @@ -493,25 +493,17 @@ xfs_trans_bhold_release(xfs_trans_t *tp, } /* - * This is called to mark bytes first through last inclusive of the given - * buffer as needing to be logged when the transaction is committed. - * The buffer must already be associated with the given transaction. - * - * First and last are numbers relative to the beginning of this buffer, - * so the first byte in the buffer is numbered 0 regardless of the - * value of b_blkno. + * Mark a buffer dirty in the transaction. */ void -xfs_trans_log_buf(xfs_trans_t *tp, - xfs_buf_t *bp, - uint first, - uint last) +xfs_trans_dirty_buf( + struct xfs_trans *tp, + struct xfs_buf *bp) { - xfs_buf_log_item_t *bip = bp->b_fspriv; + struct xfs_buf_log_item *bip = bp->b_fspriv; ASSERT(bp->b_transp == tp); ASSERT(bip != NULL); - ASSERT(first <= last && last < BBTOB(bp->b_length)); ASSERT(bp->b_iodone == NULL || bp->b_iodone == xfs_buf_iodone_callbacks); @@ -531,8 +523,6 @@ xfs_trans_log_buf(xfs_trans_t *tp, bp->b_iodone = xfs_buf_iodone_callbacks; bip->bli_item.li_cb = xfs_buf_iodone; - trace_xfs_trans_log_buf(bip); - /* * If we invalidated the buffer within this transaction, then * cancel the invalidation now that we're dirtying the buffer @@ -545,17 +535,37 @@ xfs_trans_log_buf(xfs_trans_t *tp, bp->b_flags &= ~XBF_STALE; bip->__bli_format.blf_flags &= ~XFS_BLF_CANCEL; } + bip->bli_flags |= XFS_BLI_DIRTY | XFS_BLI_LOGGED; tp->t_flags |= XFS_TRANS_DIRTY; bip->bli_item.li_desc->lid_flags |= XFS_LID_DIRTY; +} - /* - * If we have an ordered buffer we are not logging any dirty range but - * it still needs to be marked dirty and that it has been logged. - */ - bip->bli_flags |= XFS_BLI_DIRTY | XFS_BLI_LOGGED; - if (!(bip->bli_flags & XFS_BLI_ORDERED)) - xfs_buf_item_log(bip, first, last); +/* + * This is called to mark bytes first through last inclusive of the given + * buffer as needing to be logged when the transaction is committed. + * The buffer must already be associated with the given transaction. + * + * First and last are numbers relative to the beginning of this buffer, + * so the first byte in the buffer is numbered 0 regardless of the + * value of b_blkno. + */ +void +xfs_trans_log_buf( + struct xfs_trans *tp, + struct xfs_buf *bp, + uint first, + uint last) +{ + struct xfs_buf_log_item *bip = bp->b_fspriv; + + ASSERT(first <= last && last < BBTOB(bp->b_length)); + ASSERT(!(bip->bli_flags & XFS_BLI_ORDERED)); + + xfs_trans_dirty_buf(tp, bp); + + trace_xfs_trans_log_buf(bip); + xfs_buf_item_log(bip, first, last); } @@ -708,14 +718,13 @@ xfs_trans_inode_alloc_buf( } /* - * Mark the buffer as ordered for this transaction. This means - * that the contents of the buffer are not recorded in the transaction - * but it is tracked in the AIL as though it was. This allows us - * to record logical changes in transactions rather than the physical - * changes we make to the buffer without changing writeback ordering - * constraints of metadata buffers. + * Mark the buffer as ordered for this transaction. This means that the contents + * of the buffer are not recorded in the transaction but it is tracked in the + * AIL as though it was. This allows us to record logical changes in + * transactions rather than the physical changes we make to the buffer without + * changing writeback ordering constraints of metadata buffers. */ -void +bool xfs_trans_ordered_buf( struct xfs_trans *tp, struct xfs_buf *bp) @@ -726,8 +735,18 @@ xfs_trans_ordered_buf( ASSERT(bip != NULL); ASSERT(atomic_read(&bip->bli_refcount) > 0); + if (xfs_buf_item_dirty_format(bip)) + return false; + bip->bli_flags |= XFS_BLI_ORDERED; trace_xfs_buf_item_ordered(bip); + + /* + * We don't log a dirty range of an ordered buffer but it still needs + * to be marked dirty and that it has been logged. + */ + xfs_trans_dirty_buf(tp, bp); + return true; } /* diff --git a/fs/xfs/xfs_trans_inode.c b/fs/xfs/xfs_trans_inode.c index dab8daa676f9..daa7615497f9 100644 --- a/fs/xfs/xfs_trans_inode.c +++ b/fs/xfs/xfs_trans_inode.c @@ -134,3 +134,17 @@ xfs_trans_log_inode( flags |= ip->i_itemp->ili_last_fields; ip->i_itemp->ili_fields |= flags; } + +int +xfs_trans_roll_inode( + struct xfs_trans **tpp, + struct xfs_inode *ip) +{ + int error; + + xfs_trans_log_inode(*tpp, ip, XFS_ILOG_CORE); + error = xfs_trans_roll(tpp); + if (!error) + xfs_trans_ijoin(*tpp, ip, 0); + return error; +} diff --git a/fs/xfs/xfs_trans_priv.h b/fs/xfs/xfs_trans_priv.h index d91706c56c63..b317a3644c00 100644 --- a/fs/xfs/xfs_trans_priv.h +++ b/fs/xfs/xfs_trans_priv.h @@ -164,4 +164,35 @@ xfs_trans_ail_copy_lsn( *dst = *src; } #endif + +static inline void +xfs_clear_li_failed( + struct xfs_log_item *lip) +{ + struct xfs_buf *bp = lip->li_buf; + + ASSERT(lip->li_flags & XFS_LI_IN_AIL); + lockdep_assert_held(&lip->li_ailp->xa_lock); + + if (lip->li_flags & XFS_LI_FAILED) { + lip->li_flags &= ~XFS_LI_FAILED; + lip->li_buf = NULL; + xfs_buf_rele(bp); + } +} + +static inline void +xfs_set_li_failed( + struct xfs_log_item *lip, + struct xfs_buf *bp) +{ + lockdep_assert_held(&lip->li_ailp->xa_lock); + + if (!(lip->li_flags & XFS_LI_FAILED)) { + xfs_buf_hold(bp); + lip->li_flags |= XFS_LI_FAILED; + lip->li_buf = bp; + } +} + #endif /* __XFS_TRANS_PRIV_H__ */ |