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authorChristoph Hellwig <hch@infradead.org>2011-06-24 14:29:46 -0400
committerAl Viro <viro@zeniv.linux.org.uk>2011-07-20 20:47:48 -0400
commitdf2d6f26586f12a24f3ae5df4e236dc5c08d6eb4 (patch)
tree68c6ec96177f766d3b9ab0a48408271ef2af4d89 /fs/ocfs2/aops.c
parent562c72aa57c36b178eacc3500a0215651eca9429 (diff)
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fs: always maintain i_dio_count
Maintain i_dio_count for all filesystems, not just those using DIO_LOCKING. This these filesystems to also protect truncate against direct I/O requests by using common code. Right now the only non-DIO_LOCKING filesystem that appears to do so is XFS, which uses an opencoded variant of the i_dio_count scheme. Behaviour doesn't change for filesystems never calling inode_dio_wait. For ext4 behaviour changes when using the dioread_nonlock option, which previously was missing any protection between truncate and direct I/O reads. For ocfs2 that handcrafted i_dio_count manipulations are replaced with the common code now enable. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/ocfs2/aops.c')
-rw-r--r--fs/ocfs2/aops.c4
1 files changed, 1 insertions, 3 deletions
diff --git a/fs/ocfs2/aops.c b/fs/ocfs2/aops.c
index de1d3953599d..524d6167fb63 100644
--- a/fs/ocfs2/aops.c
+++ b/fs/ocfs2/aops.c
@@ -567,10 +567,8 @@ static void ocfs2_dio_end_io(struct kiocb *iocb,
/* this io's submitter should not have unlocked this before we could */
BUG_ON(!ocfs2_iocb_is_rw_locked(iocb));
- if (ocfs2_iocb_is_sem_locked(iocb)) {
- inode_dio_done(inode);
+ if (ocfs2_iocb_is_sem_locked(iocb))
ocfs2_iocb_clear_sem_locked(iocb);
- }
ocfs2_iocb_clear_rw_locked(iocb);