diff options
| author | Dmitry Monakhov <dmonakhov@openvz.org> | 2014-01-23 15:55:21 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2014-01-23 16:37:00 -0800 |
| commit | 7e775f46a125f894a1d71e96797c776dbec161f0 (patch) | |
| tree | 81ab750ea46bbdb3826173bc4f1095c9a3c7e8e7 /fs/pipe.c | |
| parent | d643a49ae16c755b3dc2ef897438b7d9c6dd488b (diff) | |
| download | lwn-7e775f46a125f894a1d71e96797c776dbec161f0.tar.gz lwn-7e775f46a125f894a1d71e96797c776dbec161f0.zip | |
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@openvz.org>
Reviewed-by: Jan Kara <jack@suse.cz>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/pipe.c')
| -rw-r--r-- | fs/pipe.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/fs/pipe.c b/fs/pipe.c index 0e0752ef2715..78fd0d0788db 100644 --- a/fs/pipe.c +++ b/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; } |