Subject: + fs-pipec-skip-file_update_time-on-frozen-fs.patch added to -mm tree
To: dmonakhov@xxxxxxxxxx,jack@xxxxxxx,viro@xxxxxxxxxxxxxxxxxx
From: akpm@xxxxxxxxxxxxxxxxxxxx
Date: Mon, 16 Dec 2013 11:55:56 -0800
The patch titled
Subject: fs/pipe.c: skip file_update_time on frozen fs
has been added to the -mm tree. Its filename is
fs-pipec-skip-file_update_time-on-frozen-fs.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/fs-pipec-skip-file_update_time-on-frozen-fs.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/fs-pipec-skip-file_update_time-on-frozen-fs.patch
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From: Dmitry Monakhov <dmonakhov@xxxxxxxxxx>
Subject: fs/pipe.c: skip file_update_time on frozen fs
Pipe has no data associated with fs so it is not good idea to block
pipe_write() if FS is frozen, but we can not update file's time on such
filesystem. Let's use same idea as we use in touch_time().
Addresses https://bugzilla.kernel.org/show_bug.cgi?id=65701
Signed-off-by: Dmitry Monakhov <dmonakhov@xxxxxxxxxx>
Reviewed-by: Jan Kara <jack@xxxxxxx>
Cc: Al Viro <viro@xxxxxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
fs/pipe.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff -puN fs/pipe.c~fs-pipec-skip-file_update_time-on-frozen-fs fs/pipe.c
--- a/fs/pipe.c~fs-pipec-skip-file_update_time-on-frozen-fs
+++ a/fs/pipe.c
@@ -663,10 +663,11 @@ out:
wake_up_interruptible_sync_poll(&pipe->wait, POLLIN | POLLRDNORM);
kill_fasync(&pipe->fasync_readers, SIGIO, POLL_IN);
}
- if (ret > 0) {
+ if (ret > 0 && sb_start_write_trylock(file_inode(filp)->i_sb)) {
int err = file_update_time(filp);
if (err)
ret = err;
+ sb_end_write(file_inode(filp)->i_sb);
}
return ret;
}
_
Patches currently in -mm which might be from dmonakhov@xxxxxxxxxx are
fs-pipec-skip-file_update_time-on-frozen-fs.patch
linux-next.patch
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