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| author | Nick Piggin <npiggin@suse.de> | 2009-06-02 12:07:47 +0200 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2009-06-12 03:36:10 +0200 |
| commit | 545b9fd3d737afc0bb5203b1e79194a471605acd (patch) | |
| tree | 9b9a39b55c3145a225c5256ff2be3b07a1ee43bb | |
| parent | linux/magic.h: move cramfs magic out of cramfs_fs.h (diff) | |
| download | linux-545b9fd3d737afc0bb5203b1e79194a471605acd.tar.xz linux-545b9fd3d737afc0bb5203b1e79194a471605acd.zip | |
fs: remove incorrect I_NEW warnings
Some filesystems can call in to sync an inode that is still in the
I_NEW state (eg. ext family, when mounted with -osync). This is OK
because the filesystem has sole access to the new inode, so it can
modify i_state without races (because no other thread should be
modifying it, by definition of I_NEW). Ie. a false positive, so
remove the warnings.
The races are described here 7ef0d7377cb287e08f3ae94cebc919448e1f5dff,
which is also where the warnings were introduced.
Reported-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: Nick Piggin <npiggin@suse.de>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| -rw-r--r-- | fs/fs-writeback.c | 2 |
1 files changed, 0 insertions, 2 deletions
diff --git a/fs/fs-writeback.c b/fs/fs-writeback.c index e0fb2e789598..efcedb6d9cbc 100644 --- a/fs/fs-writeback.c +++ b/fs/fs-writeback.c @@ -289,7 +289,6 @@ __sync_single_inode(struct inode *inode, struct writeback_control *wbc) int ret; BUG_ON(inode->i_state & I_SYNC); - WARN_ON(inode->i_state & I_NEW); /* Set I_SYNC, reset I_DIRTY */ dirty = inode->i_state & I_DIRTY; @@ -314,7 +313,6 @@ __sync_single_inode(struct inode *inode, struct writeback_control *wbc) } spin_lock(&inode_lock); - WARN_ON(inode->i_state & I_NEW); inode->i_state &= ~I_SYNC; if (!(inode->i_state & I_FREEING)) { if (!(inode->i_state & I_DIRTY) && |