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authorChristoph Hellwig <hch@lst.de>2010-10-23 19:07:20 +0200
committerAl Viro <viro@zeniv.linux.org.uk>2010-10-25 21:26:14 -0400
commit99a38919241fd051b8d93b2e4d0c05ef0556d795 (patch)
tree6d42602c4663645412e3c11dc31211a28b285594 /fs/inode.c
parent4d4eb36679adbdd75495e1bbfe7ac40e4ae41dea (diff)
downloadlinux-99a38919241fd051b8d93b2e4d0c05ef0556d795.tar.bz2
fs: fix buffer invalidation in invalidate_list
We must not call invalidate_inode_buffers in invalidate_list unless the inode can be reclaimed. If we remove the buffer association of a busy inode fsync won't find the buffers anymore. As invalidate_inode_buffers is called from various others sources than umount this actually does matter in practice. While at it change the loop to a more natural form and remove the WARN_ON for I_NEW, wich we already tested a few lines above. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/inode.c')
-rw-r--r--fs/inode.c16
1 files changed, 7 insertions, 9 deletions
diff --git a/fs/inode.c b/fs/inode.c
index 2cd2e48f7a20..4bedac32154f 100644
--- a/fs/inode.c
+++ b/fs/inode.c
@@ -28,7 +28,6 @@
/*
* This is needed for the following functions:
* - inode_has_buffers
- * - invalidate_inode_buffers
* - invalidate_bdev
*
* FIXME: remove all knowledge of the buffer layer from this file
@@ -503,16 +502,15 @@ static int invalidate_list(struct list_head *head, struct list_head *dispose)
inode = list_entry(tmp, struct inode, i_sb_list);
if (inode->i_state & I_NEW)
continue;
- invalidate_inode_buffers(inode);
- if (!atomic_read(&inode->i_count)) {
- list_move(&inode->i_list, dispose);
- WARN_ON(inode->i_state & I_NEW);
- inode->i_state |= I_FREEING;
- if (!(inode->i_state & (I_DIRTY | I_SYNC)))
- percpu_counter_dec(&nr_inodes_unused);
+ if (atomic_read(&inode->i_count)) {
+ busy = 1;
continue;
}
- busy = 1;
+
+ list_move(&inode->i_list, dispose);
+ inode->i_state |= I_FREEING;
+ if (!(inode->i_state & (I_DIRTY | I_SYNC)))
+ percpu_counter_dec(&nr_inodes_unused);
}
return busy;
}