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| author | Christoph Hellwig <hch@lst.de> | 2010-10-24 19:40:46 +0200 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2010-10-25 21:26:16 -0400 |
| commit | 9843b76aae80293f5b5a0e275360627508595ce5 (patch) | |
| tree | 522fc7b8435d13e2a6c329d93a597173ce6956a7 | |
| parent | a031878670ac8fe466859d4c1506bd91ae48678c (diff) | |
| download | linux-stable-9843b76aae80293f5b5a0e275360627508595ce5.tar.gz linux-stable-9843b76aae80293f5b5a0e275360627508595ce5.tar.bz2 linux-stable-9843b76aae80293f5b5a0e275360627508595ce5.zip | |
fs: skip I_FREEING inodes in writeback_sb_inodes
Skip I_FREEING inodes just like I_WILL_FREE and I_NEW when walking the
writeback lists. Currenly this can't happen, but once we move from
inode_lock to more fine grained locking we can have an inode that's
still on the writeback lists but has I_FREEING set, and we absolutely
need to skip it here, just like we do for all other inode list walks.
Based on a patch from Dave Chinner.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| -rw-r--r-- | fs/fs-writeback.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/fs/fs-writeback.c b/fs/fs-writeback.c index 7a24cc957f05..f6af81add459 100644 --- a/fs/fs-writeback.c +++ b/fs/fs-writeback.c @@ -487,10 +487,16 @@ static int writeback_sb_inodes(struct super_block *sb, struct bdi_writeback *wb, return 0; } - if (inode->i_state & (I_NEW | I_WILL_FREE)) { + /* + * Don't bother with new inodes or inodes beeing freed, first + * kind does not need peridic writeout yet, and for the latter + * kind writeout is handled by the freer. + */ + if (inode->i_state & (I_NEW | I_FREEING | I_WILL_FREE)) { requeue_io(inode); continue; } + /* * Was this inode dirtied after sync_sb_inodes was called? * This keeps sync from extra jobs and livelock. @@ -498,7 +504,6 @@ static int writeback_sb_inodes(struct super_block *sb, struct bdi_writeback *wb, if (inode_dirtied_after(inode, wbc->wb_start)) return 1; - BUG_ON(inode->i_state & I_FREEING); __iget(inode); pages_skipped = wbc->pages_skipped; writeback_single_inode(inode, wbc); |