diff options
Diffstat (limited to 'fs')
47 files changed, 267 insertions, 186 deletions
diff --git a/fs/9p/vfs_inode.c b/fs/9p/vfs_inode.c index 014c8dd..57ccb75 100644 --- a/fs/9p/vfs_inode.c +++ b/fs/9p/vfs_inode.c @@ -448,7 +448,7 @@ void v9fs_evict_inode(struct inode *inode) struct v9fs_inode *v9inode = V9FS_I(inode); truncate_inode_pages(inode->i_mapping, 0); - end_writeback(inode); + clear_inode(inode); filemap_fdatawrite(inode->i_mapping); #ifdef CONFIG_9P_FSCACHE diff --git a/fs/affs/inode.c b/fs/affs/inode.c index 88a4b0b..8bc4a59 100644 --- a/fs/affs/inode.c +++ b/fs/affs/inode.c @@ -264,7 +264,7 @@ affs_evict_inode(struct inode *inode) } invalidate_inode_buffers(inode); - end_writeback(inode); + clear_inode(inode); affs_free_prealloc(inode); cache_page = (unsigned long)AFFS_I(inode)->i_lc; if (cache_page) { diff --git a/fs/afs/inode.c b/fs/afs/inode.c index d890ae3..95cffd3 100644 --- a/fs/afs/inode.c +++ b/fs/afs/inode.c @@ -423,7 +423,7 @@ void afs_evict_inode(struct inode *inode) ASSERTCMP(inode->i_ino, ==, vnode->fid.vnode); truncate_inode_pages(&inode->i_data, 0); - end_writeback(inode); + clear_inode(inode); afs_give_up_callback(vnode); diff --git a/fs/autofs4/inode.c b/fs/autofs4/inode.c index 6e488eb..8a4fed8 100644 --- a/fs/autofs4/inode.c +++ b/fs/autofs4/inode.c @@ -100,7 +100,7 @@ static int autofs4_show_options(struct seq_file *m, struct dentry *root) static void autofs4_evict_inode(struct inode *inode) { - end_writeback(inode); + clear_inode(inode); kfree(inode->i_private); } diff --git a/fs/bfs/inode.c b/fs/bfs/inode.c index e23dc7c..9870417 100644 --- a/fs/bfs/inode.c +++ b/fs/bfs/inode.c @@ -174,7 +174,7 @@ static void bfs_evict_inode(struct inode *inode) truncate_inode_pages(&inode->i_data, 0); invalidate_inode_buffers(inode); - end_writeback(inode); + clear_inode(inode); if (inode->i_nlink) return; diff --git a/fs/binfmt_misc.c b/fs/binfmt_misc.c index 613aa06..790b3cd 100644 --- a/fs/binfmt_misc.c +++ b/fs/binfmt_misc.c @@ -505,7 +505,7 @@ static struct inode *bm_get_inode(struct super_block *sb, int mode) static void bm_evict_inode(struct inode *inode) { - end_writeback(inode); + clear_inode(inode); kfree(inode->i_private); } diff --git a/fs/block_dev.c b/fs/block_dev.c index ba11c30..c2bbe1f 100644 --- a/fs/block_dev.c +++ b/fs/block_dev.c @@ -487,7 +487,7 @@ static void bdev_evict_inode(struct inode *inode) struct list_head *p; truncate_inode_pages(&inode->i_data, 0); invalidate_inode_buffers(inode); /* is it needed here? */ - end_writeback(inode); + clear_inode(inode); spin_lock(&bdev_lock); while ( (p = bdev->bd_inodes.next) != &bdev->bd_inodes ) { __bd_forget(list_entry(p, struct inode, i_devices)); diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c index 61b16c6..ceb7b9c 100644 --- a/fs/btrfs/inode.c +++ b/fs/btrfs/inode.c @@ -3756,7 +3756,7 @@ void btrfs_evict_inode(struct inode *inode) btrfs_end_transaction(trans, root); btrfs_btree_balance_dirty(root, nr); no_delete: - end_writeback(inode); + clear_inode(inode); return; } diff --git a/fs/cifs/cifsfs.c b/fs/cifs/cifsfs.c index 541ef81..0a0fa02 100644 --- a/fs/cifs/cifsfs.c +++ b/fs/cifs/cifsfs.c @@ -272,7 +272,7 @@ static void cifs_evict_inode(struct inode *inode) { truncate_inode_pages(&inode->i_data, 0); - end_writeback(inode); + clear_inode(inode); cifs_fscache_release_inode_cookie(inode); } diff --git a/fs/coda/inode.c b/fs/coda/inode.c index 2870597..f181312 100644 --- a/fs/coda/inode.c +++ b/fs/coda/inode.c @@ -244,7 +244,7 @@ static void coda_put_super(struct super_block *sb) static void coda_evict_inode(struct inode *inode) { truncate_inode_pages(&inode->i_data, 0); - end_writeback(inode); + clear_inode(inode); coda_cache_clear_inode(inode); } diff --git a/fs/ecryptfs/super.c b/fs/ecryptfs/super.c index 2dd946b..e879cf8 100644 --- a/fs/ecryptfs/super.c +++ b/fs/ecryptfs/super.c @@ -133,7 +133,7 @@ static int ecryptfs_statfs(struct dentry *dentry, struct kstatfs *buf) static void ecryptfs_evict_inode(struct inode *inode) { truncate_inode_pages(&inode->i_data, 0); - end_writeback(inode); + clear_inode(inode); iput(ecryptfs_inode_to_lower(inode)); } diff --git a/fs/exofs/inode.c b/fs/exofs/inode.c index ea5e1f9..5badb0c 100644 --- a/fs/exofs/inode.c +++ b/fs/exofs/inode.c @@ -1473,7 +1473,7 @@ void exofs_evict_inode(struct inode *inode) goto no_delete; inode->i_size = 0; - end_writeback(inode); + clear_inode(inode); /* if we are deleting an obj that hasn't been created yet, wait. * This also makes sure that create_done cannot be called with an @@ -1503,5 +1503,5 @@ void exofs_evict_inode(struct inode *inode) return; no_delete: - end_writeback(inode); + clear_inode(inode); } diff --git a/fs/ext2/inode.c b/fs/ext2/inode.c index f9fa95f..264d315 100644 --- a/fs/ext2/inode.c +++ b/fs/ext2/inode.c @@ -90,7 +90,7 @@ void ext2_evict_inode(struct inode * inode) } invalidate_inode_buffers(inode); - end_writeback(inode); + clear_inode(inode); ext2_discard_reservation(inode); rsv = EXT2_I(inode)->i_block_alloc_info; diff --git a/fs/ext3/inode.c b/fs/ext3/inode.c index a09790a..9a4a5c4 100644 --- a/fs/ext3/inode.c +++ b/fs/ext3/inode.c @@ -272,18 +272,18 @@ void ext3_evict_inode (struct inode *inode) if (ext3_mark_inode_dirty(handle, inode)) { /* If that failed, just dquot_drop() and be done with that */ dquot_drop(inode); - end_writeback(inode); + clear_inode(inode); } else { ext3_xattr_delete_inode(handle, inode); dquot_free_inode(inode); dquot_drop(inode); - end_writeback(inode); + clear_inode(inode); ext3_free_inode(handle, inode); } ext3_journal_stop(handle); return; no_delete: - end_writeback(inode); + clear_inode(inode); dquot_drop(inode); } diff --git a/fs/ext4/super.c b/fs/ext4/super.c index 1867a98..35b5954 100644 --- a/fs/ext4/super.c +++ b/fs/ext4/super.c @@ -1007,7 +1007,7 @@ static void destroy_inodecache(void) void ext4_clear_inode(struct inode *inode) { invalidate_inode_buffers(inode); - end_writeback(inode); + clear_inode(inode); dquot_drop(inode); ext4_discard_preallocations(inode); if (EXT4_I(inode)->jinode) { diff --git a/fs/fat/inode.c b/fs/fat/inode.c index 21687e3..b3d290c 100644 --- a/fs/fat/inode.c +++ b/fs/fat/inode.c @@ -454,7 +454,7 @@ static void fat_evict_inode(struct inode *inode) fat_truncate_blocks(inode, 0); } invalidate_inode_buffers(inode); - end_writeback(inode); + clear_inode(inode); fat_cache_inval_inode(inode); fat_detach(inode); } diff --git a/fs/freevxfs/vxfs_inode.c b/fs/freevxfs/vxfs_inode.c index cf9ef91..ef67c95 100644 --- a/fs/freevxfs/vxfs_inode.c +++ b/fs/freevxfs/vxfs_inode.c @@ -355,6 +355,6 @@ void vxfs_evict_inode(struct inode *ip) { truncate_inode_pages(&ip->i_data, 0); - end_writeback(ip); + clear_inode(ip); call_rcu(&ip->i_rcu, vxfs_i_callback); } diff --git a/fs/fs-writeback.c b/fs/fs-writeback.c index 539f36c..8d2fb8c 100644 --- a/fs/fs-writeback.c +++ b/fs/fs-writeback.c @@ -231,11 +231,8 @@ static void requeue_io(struct inode *inode, struct bdi_writeback *wb) static void inode_sync_complete(struct inode *inode) { - /* - * Prevent speculative execution through - * spin_unlock(&wb->list_lock); - */ - + inode->i_state &= ~I_SYNC; + /* Waiters must see I_SYNC cleared before being woken up */ smp_mb(); wake_up_bit(&inode->i_state, __I_SYNC); } @@ -329,10 +326,12 @@ static int write_inode(struct inode *inode, struct writeback_control *wbc) } /* - * Wait for writeback on an inode to complete. + * Wait for writeback on an inode to complete. Called with i_lock held. + * Caller must make sure inode cannot go away when we drop i_lock. */ -static void inode_wait_for_writeback(struct inode *inode, - struct bdi_writeback *wb) +static void __inode_wait_for_writeback(struct inode *inode) + __releases(inode->i_lock) + __acquires(inode->i_lock) { DEFINE_WAIT_BIT(wq, &inode->i_state, __I_SYNC); wait_queue_head_t *wqh; @@ -340,70 +339,119 @@ static void inode_wait_for_writeback(struct inode *inode, wqh = bit_waitqueue(&inode->i_state, __I_SYNC); while (inode->i_state & I_SYNC) { spin_unlock(&inode->i_lock); - spin_unlock(&wb->list_lock); __wait_on_bit(wqh, &wq, inode_wait, TASK_UNINTERRUPTIBLE); - spin_lock(&wb->list_lock); spin_lock(&inode->i_lock); } } /* - * Write out an inode's dirty pages. Called under wb->list_lock and - * inode->i_lock. Either the caller has an active reference on the inode or - * the inode has I_WILL_FREE set. - * - * If `wait' is set, wait on the writeout. - * - * The whole writeout design is quite complex and fragile. We want to avoid - * starvation of particular inodes when others are being redirtied, prevent - * livelocks, etc. + * Wait for writeback on an inode to complete. Caller must have inode pinned. */ -static int -writeback_single_inode(struct inode *inode, struct bdi_writeback *wb, - struct writeback_control *wbc) +void inode_wait_for_writeback(struct inode *inode) { - struct address_space *mapping = inode->i_mapping; - long nr_to_write = wbc->nr_to_write; - unsigned dirty; - int ret; + spin_lock(&inode->i_lock); + __inode_wait_for_writeback(inode); + spin_unlock(&inode->i_lock); +} - assert_spin_locked(&wb->list_lock); - assert_spin_locked(&inode->i_lock); +/* + * Sleep until I_SYNC is cleared. This function must be called with i_lock + * held and drops it. It is aimed for callers not holding any inode reference + * so once i_lock is dropped, inode can go away. + */ +static void inode_sleep_on_writeback(struct inode *inode) + __releases(inode->i_lock) +{ + DEFINE_WAIT(wait); + wait_queue_head_t *wqh = bit_waitqueue(&inode->i_state, __I_SYNC); + int sleep; - if (!atomic_read(&inode->i_count)) - WARN_ON(!(inode->i_state & (I_WILL_FREE|I_FREEING))); - else - WARN_ON(inode->i_state & I_WILL_FREE); + prepare_to_wait(wqh, &wait, TASK_UNINTERRUPTIBLE); + sleep = inode->i_state & I_SYNC; + spin_unlock(&inode->i_lock); + if (sleep) + schedule(); + finish_wait(wqh, &wait); +} - if (inode->i_state & I_SYNC) { +/* + * Find proper writeback list for the inode depending on its current state and + * possibly also change of its state while we were doing writeback. Here we + * handle things such as livelock prevention or fairness of writeback among + * inodes. This function can be called only by flusher thread - noone else + * processes all inodes in writeback lists and requeueing inodes behind flusher + * thread's back can have unexpected consequences. + */ +static void requeue_inode(struct inode *inode, struct bdi_writeback *wb, + struct writeback_control *wbc) +{ + if (inode->i_state & I_FREEING) + return; + + /* + * Sync livelock prevention. Each inode is tagged and synced in one + * shot. If still dirty, it will be redirty_tail()'ed below. Update + * the dirty time to prevent enqueue and sync it again. + */ + if ((inode->i_state & I_DIRTY) && + (wbc->sync_mode == WB_SYNC_ALL || wbc->tagged_writepages)) + inode->dirtied_when = jiffies; + + if (wbc->pages_skipped) { /* - * If this inode is locked for writeback and we are not doing - * writeback-for-data-integrity, move it to b_more_io so that - * writeback can proceed with the other inodes on s_io. - * - * We'll have another go at writing back this inode when we - * completed a full scan of b_io. + * writeback is not making progress due to locked + * buffers. Skip this inode for now. */ - if (wbc->sync_mode != WB_SYNC_ALL) { + redirty_tail(inode, wb); + return; + } + + if (mapping_tagged(inode->i_mapping, PAGECACHE_TAG_DIRTY)) { + /* + * We didn't write back all the pages. nfs_writepages() + * sometimes bales out without doing anything. + */ + if (wbc->nr_to_write <= 0) { + /* Slice used up. Queue for next turn. */ requeue_io(inode, wb); - trace_writeback_single_inode_requeue(inode, wbc, - nr_to_write); - return 0; + } else { + /* + * Writeback blocked by something other than + * congestion. Delay the inode for some time to + * avoid spinning on the CPU (100% iowait) + * retrying writeback of the dirty page/inode + * that cannot be performed immediately. + */ + redirty_tail(inode, wb); } - + } else if (inode->i_state & I_DIRTY) { /* - * It's a data-integrity sync. We must wait. + * Filesystems can dirty the inode during writeback operations, + * such as delayed allocation during submission or metadata + * updates after data IO completion. */ - inode_wait_for_writeback(inode, wb); + redirty_tail(inode, wb); + } else { + /* The inode is clean. Remove from writeback lists. */ + list_del_init(&inode->i_wb_list); } +} - BUG_ON(inode->i_state & I_SYNC); +/* + * Write out an inode and its dirty pages. Do not update the writeback list + * linkage. That is left to the caller. The caller is also responsible for + * setting I_SYNC flag and calling inode_sync_complete() to clear it. + */ +static int +__writeback_single_inode(struct inode *inode, struct bdi_writeback *wb, + struct writeback_control *wbc) +{ + struct address_space *mapping = inode->i_mapping; + long nr_to_write = wbc->nr_to_write; + unsigned dirty; + int ret; - /* Set I_SYNC, reset I_DIRTY_PAGES */ - inode->i_state |= I_SYNC; - inode->i_state &= ~I_DIRTY_PAGES; - spin_unlock(&inode->i_lock); - spin_unlock(&wb->list_lock); + WARN_ON(!(inode->i_state & I_SYNC)); ret = do_writepages(mapping, wbc); @@ -424,6 +472,9 @@ writeback_single_inode(struct inode *inode, struct bdi_writeback *wb, * write_inode() */ spin_lock(&inode->i_lock); + /* Clear I_DIRTY_PAGES if we've written out all dirty pages */ + if (!mapping_tagged(mapping, PAGECACHE_TAG_DIRTY)) + inode->i_state &= ~I_DIRTY_PAGES; dirty = inode->i_state & I_DIRTY; inode->i_state &= ~(I_DIRTY_SYNC | I_DIRTY_DATASYNC); spin_unlock(&inode->i_lock); @@ -433,60 +484,67 @@ writeback_single_inode(struct inode *inode, struct bdi_writeback *wb, if (ret == 0) ret = err; } + trace_writeback_single_inode(inode, wbc, nr_to_write); + return ret; +} + +/* + * Write out an inode's dirty pages. Either the caller has an active reference + * on the inode or the inode has I_WILL_FREE set. + * + * This function is designed to be called for writing back one inode which + * we go e.g. from filesystem. Flusher thread uses __writeback_single_inode() + * and does more profound writeback list handling in writeback_sb_inodes(). + */ +static int +writeback_single_inode(struct inode *inode, struct bdi_writeback *wb, + struct writeback_control *wbc) +{ + int ret = 0; - spin_lock(&wb->list_lock); spin_lock(&inode->i_lock); - inode->i_state &= ~I_SYNC; - if (!(inode->i_state & I_FREEING)) { + if (!atomic_read(&inode->i_count)) + WARN_ON(!(inode->i_state & (I_WILL_FREE|I_FREEING))); + else + WARN_ON(inode->i_state & I_WILL_FREE); + + if (inode->i_state & I_SYNC) { + if (wbc->sync_mode != WB_SYNC_ALL) + goto out; /* - * Sync livelock prevention. Each inode is tagged and synced in - * one shot. If still dirty, it will be redirty_tail()'ed below. - * Update the dirty time to prevent enqueue and sync it again. + * It's a data-integrity sync. We must wait. Since callers hold + * inode reference or inode has I_WILL_FREE set, it cannot go + * away under us. */ - if ((inode->i_state & I_DIRTY) && - (wbc->sync_mode == WB_SYNC_ALL || wbc->tagged_writepages)) - inode->dirtied_when = jiffies; - - if (mapping_tagged(mapping, PAGECACHE_TAG_DIRTY)) { - /* - * We didn't write back all the pages. nfs_writepages() - * sometimes bales out without doing anything. - */ - inode->i_state |= I_DIRTY_PAGES; - if (wbc->nr_to_write <= 0) { - /* - * slice used up: queue for next turn - */ - requeue_io(inode, wb); - } else { - /* - * Writeback blocked by something other than - * congestion. Delay the inode for some time to - * avoid spinning on the CPU (100% iowait) - * retrying writeback of the dirty page/inode - * that cannot be performed immediately. - */ - redirty_tail(inode, wb); - } - } else if (inode->i_state & I_DIRTY) { - /* - * Filesystems can dirty the inode during writeback - * operations, such as delayed allocation during - * submission or metadata updates after data IO - * completion. - */ - redirty_tail(inode, wb); - } else { - /* - * The inode is clean. At this point we either have - * a reference to the inode or it's on it's way out. - * No need to add it back to the LRU. - */ - list_del_init(&inode->i_wb_list); - } + __inode_wait_for_writeback(inode); } + WARN_ON(inode->i_state & I_SYNC); + /* + * Skip inode if it is clean. We don't want to mess with writeback + * lists in this function since flusher thread may be doing for example + * sync in parallel and if we move the inode, it could get skipped. So + * here we make sure inode is on some writeback list and leave it there + * unless we have completely cleaned the inode. + */ + if (!(inode->i_state & I_DIRTY)) + goto out; + inode->i_state |= I_SYNC; + spin_unlock(&inode->i_lock); + + ret = __writeback_single_inode(inode, wb, wbc); + + spin_lock(&wb->list_lock); + spin_lock(&inode->i_lock); + /* + * If inode is clean, remove it from writeback lists. Otherwise don't + * touch it. See comment above for explanation. + */ + if (!(inode->i_state & I_DIRTY)) + list_del_init(&inode->i_wb_list); + spin_unlock(&wb->list_lock); inode_sync_complete(inode); - trace_writeback_single_inode(inode, wbc, nr_to_write); +out: + spin_unlock(&inode->i_lock); return ret; } @@ -580,29 +638,57 @@ static long writeback_sb_inodes(struct super_block *sb, redirty_tail(inode, wb); continue; } - __iget(inode); + if ((inode->i_state & I_SYNC) && wbc.sync_mode != WB_SYNC_ALL) { + /* + * If this inode is locked for writeback and we are not + * doing writeback-for-data-integrity, move it to + * b_more_io so that writeback can proceed with the + * other inodes on s_io. + * + * We'll have another go at writing back this inode + * when we completed a full scan of b_io. + */ + spin_unlock(&inode->i_lock); + requeue_io(inode, wb); + trace_writeback_sb_inodes_requeue(inode); + continue; + } + spin_unlock(&wb->list_lock); + + /* + * We already requeued the inode if it had I_SYNC set and we + * are doing WB_SYNC_NONE writeback. So this catches only the + * WB_SYNC_ALL case. + */ + if (inode->i_state & I_SYNC) { + /* Wait for I_SYNC. This function drops i_lock... */ + inode_sleep_on_writeback(inode); + /* Inode may be gone, start again */ + continue; + } + inode->i_state |= I_SYNC; + spin_unlock(&inode->i_lock); + write_chunk = writeback_chunk_size(wb->bdi, work); wbc.nr_to_write = write_chunk; wbc.pages_skipped = 0; - writeback_single_inode(inode, wb, &wbc); + /* + * We use I_SYNC to pin the inode in memory. While it is set + * evict_inode() will wait so the inode cannot be freed. + */ + __writeback_single_inode(inode, wb, &wbc); work->nr_pages -= write_chunk - wbc.nr_to_write; wrote += write_chunk - wbc.nr_to_write; + spin_lock(&wb->list_lock); + spin_lock(&inode->i_lock); if (!(inode->i_state & I_DIRTY)) wrote++; - if (wbc.pages_skipped) { - /* - * writeback is not making progress due to locked - * buffers. Skip this inode for now. - */ - redirty_tail(inode, wb); - } + requeue_inode(inode, wb, &wbc); + inode_sync_complete(inode); spin_unlock(&inode->i_lock); - spin_unlock(&wb->list_lock); - iput(inode); - cond_resched(); - spin_lock(&wb->list_lock); + cond_resched_lock(&wb->list_lock); /* * bail out to wb_writeback() often enough to check * background threshold and other termination conditions. @@ -796,8 +882,10 @@ static long wb_writeback(struct bdi_writeback *wb, trace_writeback_wait(wb->bdi, work); inode = wb_inode(wb->b_more_io.prev); spin_lock(&inode->i_lock); - inode_wait_for_writeback(inode, wb); - spin_unlock(&inode->i_lock); + spin_unlock(&wb->list_lock); + /* This function drops i_lock... */ + inode_sleep_on_writeback(inode); + spin_lock(&wb->list_lock); } } spin_unlock(&wb->list_lock); @@ -1331,7 +1419,6 @@ EXPORT_SYMBOL(sync_inodes_sb); int write_inode_now(struct inode *inode, int sync) { struct bdi_writeback *wb = &inode_to_bdi(inode)->wb; - int ret; struct writeback_control wbc = { .nr_to_write = LONG_MAX, .sync_mode = sync ? WB_SYNC_ALL : WB_SYNC_NONE, @@ -1343,12 +1430,7 @@ int write_inode_now(struct inode *inode, int sync) wbc.nr_to_write = 0; might_sleep(); - spin_lock(&wb->list_lock); - spin_lock(&inode->i_lock); - ret = writeback_single_inode(inode, wb, &wbc); - spin_unlock(&inode->i_lock); - spin_unlock(&wb->list_lock); - return ret; + return writeback_single_inode(inode, wb, &wbc); } EXPORT_SYMBOL(write_inode_now); @@ -1365,15 +1447,7 @@ EXPORT_SYMBOL(write_inode_now); */ int sync_inode(struct inode *inode, struct writeback_control *wbc) { - struct bdi_writeback *wb = &inode_to_bdi(inode)->wb; - int ret; - - spin_lock(&wb->list_lock); - spin_lock(&inode->i_lock); - ret = writeback_single_inode(inode, wb, wbc); - spin_unlock(&inode->i_lock); - spin_unlock(&wb->list_lock); - return ret; + return writeback_single_inode(inode, &inode_to_bdi(inode)->wb, wbc); } EXPORT_SYMBOL(sync_inode); diff --git a/fs/fuse/inode.c b/fs/fuse/inode.c index 26783eb..56f6dcf 100644 --- a/fs/fuse/inode.c +++ b/fs/fuse/inode.c @@ -122,7 +122,7 @@ static void fuse_destroy_inode(struct inode *inode) static void fuse_evict_inode(struct inode *inode) { truncate_inode_pages(&inode->i_data, 0); - end_writeback(inode); + clear_inode(inode); if (inode->i_sb->s_flags & MS_ACTIVE) { struct fuse_conn *fc = get_fuse_conn(inode); struct fuse_inode *fi = get_fuse_inode(inode); diff --git a/fs/gfs2/super.c b/fs/gfs2/super.c index 6172fa7..713e621 100644 --- a/fs/gfs2/super.c +++ b/fs/gfs2/super.c @@ -1554,7 +1554,7 @@ out_unlock: out: /* Case 3 starts here */ truncate_inode_pages(&inode->i_data, 0); - end_writeback(inode); + clear_inode(inode); gfs2_dir_hash_inval(ip); ip->i_gl->gl_object = NULL; flush_delayed_work_sync(&ip->i_gl->gl_work); diff --git a/fs/hfs/inode.c b/fs/hfs/inode.c index 737dbeb..761ec06 100644 --- a/fs/hfs/inode.c +++ b/fs/hfs/inode.c @@ -532,7 +532,7 @@ out: void hfs_evict_inode(struct inode *inode) { truncate_inode_pages(&inode->i_data, 0); - end_writeback(inode); + clear_inode(inode); if (HFS_IS_RSRC(inode) && HFS_I(inode)->rsrc_inode) { HFS_I(HFS_I(inode)->rsrc_inode)->rsrc_inode = NULL; iput(HFS_I(inode)->rsrc_inode); diff --git a/fs/hfsplus/super.c b/fs/hfsplus/super.c index ceb1c28..a9bca4b 100644 --- a/fs/hfsplus/super.c +++ b/fs/hfsplus/super.c @@ -154,7 +154,7 @@ static void hfsplus_evict_inode(struct inode *inode) { dprint(DBG_INODE, "hfsplus_evict_inode: %lu\n", inode->i_ino); truncate_inode_pages(&inode->i_data, 0); - end_writeback(inode); + clear_inode(inode); if (HFSPLUS_IS_RSRC(inode)) { HFSPLUS_I(HFSPLUS_I(inode)->rsrc_inode)->rsrc_inode = NULL; iput(HFSPLUS_I(inode)->rsrc_inode); diff --git a/fs/hostfs/hostfs_kern.c b/fs/hostfs/hostfs_kern.c index 07c516b..2afa5bb 100644 --- a/fs/hostfs/hostfs_kern.c +++ b/fs/hostfs/hostfs_kern.c @@ -240,7 +240,7 @@ static struct inode *hostfs_alloc_inode(struct super_block *sb) static void hostfs_evict_inode(struct inode *inode) { truncate_inode_pages(&inode->i_data, 0); - end_writeback(inode); + clear_inode(inode); if (HOSTFS_I(inode)->fd != -1) { close_file(&HOSTFS_I(inode)->fd); HOSTFS_I(inode)->fd = -1; diff --git a/fs/hpfs/inode.c b/fs/hpfs/inode.c index 3b2cec2..b43066c 100644 --- a/fs/hpfs/inode.c +++ b/fs/hpfs/inode.c @@ -299,7 +299,7 @@ void hpfs_write_if_changed(struct inode *inode) void hpfs_evict_inode(struct inode *inode) { truncate_inode_pages(&inode->i_data, 0); - end_writeback(inode); + clear_inode(inode); if (!inode->i_nlink) { hpfs_lock(inode->i_sb); hpfs_remove_fnode(inode->i_sb, inode->i_ino); diff --git a/fs/hppfs/hppfs.c b/fs/hppfs/hppfs.c index a80e45a..d4f93b5 100644 --- a/fs/hppfs/hppfs.c +++ b/fs/hppfs/hppfs.c @@ -614,7 +614,7 @@ static struct inode *hppfs_alloc_inode(struct super_block *sb) void hppfs_evict_inode(struct inode *ino) { - end_writeback(ino); + clear_inode(ino); dput(HPPFS_I(ino)->proc_dentry); mntput(ino->i_sb->s_fs_info); } diff --git a/fs/hugetlbfs/inode.c b/fs/hugetlbfs/inode.c index 001ef01..cc9281b 100644 --- a/fs/hugetlbfs/inode.c +++ b/fs/hugetlbfs/inode.c @@ -393,7 +393,7 @@ static void truncate_hugepages(struct inode *inode, loff_t lstart) static void hugetlbfs_evict_inode(struct inode *inode) { truncate_hugepages(inode, 0); - end_writeback(inode); + clear_inode(inode); } static inline void @@ -486,7 +486,7 @@ void __remove_inode_hash(struct inode *inode) } EXPORT_SYMBOL(__remove_inode_hash); -void end_writeback(struct inode *inode) +void clear_inode(struct inode *inode) { might_sleep(); /* @@ -500,11 +500,10 @@ void end_writeback(struct inode *inode) BUG_ON(!list_empty(&inode->i_data.private_list)); BUG_ON(!(inode->i_state & I_FREEING)); BUG_ON(inode->i_state & I_CLEAR); - inode_sync_wait(inode); /* don't need i_lock here, no concurrent mods to i_state */ inode->i_state = I_FREEING | I_CLEAR; } -EXPORT_SYMBOL(end_writeback); +EXPORT_SYMBOL(clear_inode); /* * Free the inode passed in, removing it from the lists it is still connected @@ -531,12 +530,20 @@ static void evict(struct inode *inode) inode_sb_list_del(inode); + /* + * Wait for flusher thread to be done with the inode so that filesystem + * does not start destroying it while writeback is still running. Since + * the inode has I_FREEING set, flusher thread won't start new work on + * the inode. We just have to wait for running writeback to finish. + */ + inode_wait_for_writeback(inode); + if (op->evict_inode) { op->evict_inode(inode); } else { if (inode->i_data.nrpages) truncate_inode_pages(&inode->i_data, 0); - end_writeback(inode); + clear_inode(inode); } if (S_ISBLK(inode->i_mode) && inode->i_bdev) bd_forget(inode); diff --git a/fs/jffs2/fs.c b/fs/jffs2/fs.c index bb6f993..3d3092e 100644 --- a/fs/jffs2/fs.c +++ b/fs/jffs2/fs.c @@ -240,7 +240,7 @@ void jffs2_evict_inode (struct inode *inode) jffs2_dbg(1, "%s(): ino #%lu mode %o\n", __func__, inode->i_ino, inode->i_mode); truncate_inode_pages(&inode->i_data, 0); - end_writeback(inode); + clear_inode(inode); jffs2_do_clear_inode(c, f); } diff --git a/fs/jfs/inode.c b/fs/jfs/inode.c index 77b69b2..4692bf3 100644 --- a/fs/jfs/inode.c +++ b/fs/jfs/inode.c @@ -169,7 +169,7 @@ void jfs_evict_inode(struct inode *inode) } else { truncate_inode_pages(&inode->i_data, 0); } - end_writeback(inode); + clear_inode(inode); dquot_drop(inode); } diff --git a/fs/logfs/readwrite.c b/fs/logfs/readwrite.c index e3ab5e5..f1cb512 100644 --- a/fs/logfs/readwrite.c +++ b/fs/logfs/readwrite.c @@ -2175,7 +2175,7 @@ void logfs_evict_inode(struct inode *inode) } } truncate_inode_pages(&inode->i_data, 0); - end_writeback(inode); + clear_inode(inode); /* Cheaper version of write_inode. All changes are concealed in * aliases, which are moved back. No write to the medium happens. diff --git a/fs/minix/inode.c b/fs/minix/inode.c index fcb05d2..2a503ad 100644 --- a/fs/minix/inode.c +++ b/fs/minix/inode.c @@ -32,7 +32,7 @@ static void minix_evict_inode(struct inode *inode) minix_truncate(inode); } invalidate_inode_buffers(inode); - end_writeback(inode); + clear_inode(inode); if (!inode->i_nlink) minix_free_inode(inode); } diff --git a/fs/ncpfs/inode.c b/fs/ncpfs/inode.c index 87484fb..333df07 100644 --- a/fs/ncpfs/inode.c +++ b/fs/ncpfs/inode.c @@ -292,7 +292,7 @@ static void ncp_evict_inode(struct inode *inode) { truncate_inode_pages(&inode->i_data, 0); - end_writeback(inode); + clear_inode(inode); if (S_ISDIR(inode->i_mode)) { DDPRINTK("ncp_evict_inode: put directory %ld\n", inode->i_ino); diff --git a/fs/nfs/inode.c b/fs/nfs/inode.c index e8bbfa5..c607313 100644 --- a/fs/nfs/inode.c +++ b/fs/nfs/inode.c @@ -121,7 +121,7 @@ static void nfs_clear_inode(struct inode *inode) void nfs_evict_inode(struct inode *inode) { truncate_inode_pages(&inode->i_data, 0); - end_writeback(inode); + clear_inode(inode); nfs_clear_inode(inode); } @@ -1500,7 +1500,7 @@ static int nfs_update_inode(struct inode *inode, struct nfs_fattr *fattr) void nfs4_evict_inode(struct inode *inode) { truncate_inode_pages(&inode->i_data, 0); - end_writeback(inode); + clear_inode(inode); pnfs_return_layout(inode); pnfs_destroy_layout(NFS_I(inode)); /* If we are holding a delegation, return it! */ diff --git a/fs/nilfs2/inode.c b/fs/nilfs2/inode.c index 8f7b95a..7cc6446 100644 --- a/fs/nilfs2/inode.c +++ b/fs/nilfs2/inode.c @@ -734,7 +734,7 @@ void nilfs_evict_inode(struct inode *inode) if (inode->i_nlink || !ii->i_root || unlikely(is_bad_inode(inode))) { if (inode->i_data.nrpages) truncate_inode_pages(&inode->i_data, 0); - end_writeback(inode); + clear_inode(inode); nilfs_clear_inode(inode); return; } @@ -746,7 +746,7 @@ void nilfs_evict_inode(struct inode *inode) /* TODO: some of the following operations may fail. */ nilfs_truncate_bmap(ii, 0); nilfs_mark_inode_dirty(inode); - end_writeback(inode); + clear_inode(inode); ret = nilfs_ifile_delete_inode(ii->i_root->ifile, inode->i_ino); if (!ret) diff --git a/fs/ntfs/inode.c b/fs/ntfs/inode.c index 2eaa666..c6dbd3d 100644 --- a/fs/ntfs/inode.c +++ b/fs/ntfs/inode.c @@ -2258,7 +2258,7 @@ void ntfs_evict_big_inode(struct inode *vi) ntfs_inode *ni = NTFS_I(vi); truncate_inode_pages(&vi->i_data, 0); - end_writeback(vi); + clear_inode(vi); #ifdef NTFS_RW if (NInoDirty(ni)) { diff --git a/fs/ocfs2/dlmfs/dlmfs.c b/fs/ocfs2/dlmfs/dlmfs.c index 3b5825e..e31d6ae 100644 --- a/fs/ocfs2/dlmfs/dlmfs.c +++ b/fs/ocfs2/dlmfs/dlmfs.c @@ -367,7 +367,7 @@ static void dlmfs_evict_inode(struct inode *inode) int status; struct dlmfs_inode_private *ip; - end_writeback(inode); + clear_inode(inode); mlog(0, "inode %lu\n", inode->i_ino); diff --git a/fs/ocfs2/inode.c b/fs/ocfs2/inode.c index 17454a9..735514c 100644 --- a/fs/ocfs2/inode.c +++ b/fs/ocfs2/inode.c @@ -1069,7 +1069,7 @@ static void ocfs2_clear_inode(struct inode *inode) int status; struct ocfs2_inode_info *oi = OCFS2_I(inode); - end_writeback(inode); + clear_inode(inode); trace_ocfs2_clear_inode((unsigned long long)oi->ip_blkno, inode->i_nlink); diff --git a/fs/omfs/inode.c b/fs/omfs/inode.c index dbc8422..e6213b3 100644 --- a/fs/omfs/inode.c +++ b/fs/omfs/inode.c @@ -184,7 +184,7 @@ int omfs_sync_inode(struct inode *inode) static void omfs_evict_inode(struct inode *inode) { truncate_inode_pages(&inode->i_data, 0); - end_writeback(inode); + clear_inode(inode); if (inode->i_nlink) return; diff --git a/fs/proc/inode.c b/fs/proc/inode.c index 554ecc5..7ac817b 100644 --- a/fs/proc/inode.c +++ b/fs/proc/inode.c @@ -33,7 +33,7 @@ static void proc_evict_inode(struct inode *inode) const struct proc_ns_operations *ns_ops; truncate_inode_pages(&inode->i_data, 0); - end_writeback(inode); + clear_inode(inode); /* Stop tracking associated processes */ put_pid(PROC_I(inode)->pid); diff --git a/fs/pstore/inode.c b/fs/pstore/inode.c index 1950788..aeb19e6 100644 --- a/fs/pstore/inode.c +++ b/fs/pstore/inode.c @@ -85,7 +85,7 @@ static void pstore_evict_inode(struct inode *inode) struct pstore_private *p = inode->i_private; unsigned long flags; - end_writeback(inode); + clear_inode(inode); if (p) { spin_lock_irqsave(&allpstore_lock, flags); list_del(&p->list); diff --git a/fs/reiserfs/inode.c b/fs/reiserfs/inode.c index 494c315..59d0687 100644 --- a/fs/reiserfs/inode.c +++ b/fs/reiserfs/inode.c @@ -76,14 +76,14 @@ void reiserfs_evict_inode(struct inode *inode) ; } out: - end_writeback(inode); /* note this must go after the journal_end to prevent deadlock */ + clear_inode(inode); /* note this must go after the journal_end to prevent deadlock */ dquot_drop(inode); inode->i_blocks = 0; reiserfs_write_unlock_once(inode->i_sb, depth); return; no_delete: - end_writeback(inode); + clear_inode(inode); dquot_drop(inode); } diff --git a/fs/sysfs/inode.c b/fs/sysfs/inode.c index 907c2b3..0ce3ccf 100644 --- a/fs/sysfs/inode.c +++ b/fs/sysfs/inode.c @@ -310,7 +310,7 @@ void sysfs_evict_inode(struct inode *inode) struct sysfs_dirent *sd = inode->i_private; truncate_inode_pages(&inode->i_data, 0); - end_writeback(inode); + clear_inode(inode); sysfs_put(sd); } diff --git a/fs/sysv/inode.c b/fs/sysv/inode.c index 3da5ce2..08d0b25 100644 --- a/fs/sysv/inode.c +++ b/fs/sysv/inode.c @@ -316,7 +316,7 @@ static void sysv_evict_inode(struct inode *inode) sysv_truncate(inode); } invalidate_inode_buffers(inode); - end_writeback(inode); + clear_inode(inode); if (!inode->i_nlink) sysv_free_inode(inode); } diff --git a/fs/ubifs/super.c b/fs/ubifs/super.c index 001accc..5862dd9 100644 --- a/fs/ubifs/super.c +++ b/fs/ubifs/super.c @@ -378,7 +378,7 @@ out: smp_wmb(); } done: - end_writeback(inode); + clear_inode(inode); } static void ubifs_dirty_inode(struct inode *inode, int flags) diff --git a/fs/udf/inode.c b/fs/udf/inode.c index 7d75280..873e1ba 100644 --- a/fs/udf/inode.c +++ b/fs/udf/inode.c @@ -80,7 +80,7 @@ void udf_evict_inode(struct inode *inode) } else truncate_inode_pages(&inode->i_data, 0); invalidate_inode_buffers(inode); - end_writeback(inode); + clear_inode(inode); if (iinfo->i_alloc_type != ICBTAG_FLAG_AD_IN_ICB && inode->i_size != iinfo->i_lenExtents) { udf_warn(inode->i_sb, "Inode %lu (mode %o) has inode size %llu different from extent length %llu. Filesystem need not be standards compliant.\n", diff --git a/fs/ufs/inode.c b/fs/ufs/inode.c index 7cdd395..dd7c89d 100644 --- a/fs/ufs/inode.c +++ b/fs/ufs/inode.c @@ -895,7 +895,7 @@ void ufs_evict_inode(struct inode * inode) } invalidate_inode_buffers(inode); - end_writeback(inode); + clear_inode(inode); if (want_delete) { lock_ufs(inode->i_sb); diff --git a/fs/xfs/xfs_super.c b/fs/xfs/xfs_super.c index 2fcfd5b..0d9de41 100644 --- a/fs/xfs/xfs_super.c +++ b/fs/xfs/xfs_super.c @@ -932,7 +932,7 @@ xfs_fs_evict_inode( trace_xfs_evict_inode(ip); truncate_inode_pages(&inode->i_data, 0); - end_writeback(inode); + clear_inode(inode); XFS_STATS_INC(vn_rele); XFS_STATS_INC(vn_remove); XFS_STATS_DEC(vn_active); |
