Eric Lee / smarc-ti-linux-kernel

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Commit 7e775f46a125f894a1d71e96797c776dbec161f0

Authored by Dmitry Monakhov
Committed by Linus Torvalds
1 parent d643a49ae1
Exists in master and in 16 other branches dlt-processor-sdk-linux-03.00.00.04, processor-sdk-linux-01.00.00, processor-sdk-linux-02.00.01, smarc-ti-linux-3.14.y, smarc-ti-linux-3.15.y, smarc-ti-lsk-linux-4.1.y, smarct3x-processor-sdk-04.01.00.06, smarct3x-processor-sdk-linux-02.00.01, smarct3x-processor-sdk-linux-03.00.00.04, smarct4x-800-processor-sdk-linux-02.00.01, smarct4x-processor-sdk-04.01.00.06, smarct4x-processor-sdk-linux-02.00.01, smarct4x-processor-sdk-linux-03.00.00.04, ti-linux-3.14.y, ti-linux-3.15.y, ti-lsk-linux-4.1.y

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>

Showing 1 changed file with 2 additions and 1 deletions Side-by-side Diff

... ... @@ -663,10 +663,11 @@
663 663 wake_up_interruptible_sync_poll(&pipe->wait, POLLIN | POLLRDNORM);
664 664 kill_fasync(&pipe->fasync_readers, SIGIO, POLL_IN);
665 665 }
666   - if (ret > 0) {
  666 + if (ret > 0 && sb_start_write_trylock(file_inode(filp)->i_sb)) {
667 667 int err = file_update_time(filp);
668 668 if (err)
669 669 ret = err;
  670 + sb_end_write(file_inode(filp)->i_sb);
670 671 }
671 672 return ret;
672 673 }