commit 2d864e41710f1d2ba406fb62018ab0487152e6f2
author Anatol Pomozov <anatol.pomozov@gmail.com> Tue May 07 15:37:48 2013 -0700
committer Linus Torvalds <torvalds@linux-foundation.org> Tue May 07 16:09:00 2013 -0700
tree 52c6a3172b7a4099830962323f2a1742fa166b01
parent 292088ee032d0df59e7c8a7a00e9b97260146078

kref: minor cleanup

 - make warning smp-safe
 - result of atomic _unless_zero functions should be checked by caller
   to avoid use-after-free error
 - trivial whitespace fix.

Link: https://lkml.org/lkml/2013/4/12/391

Tested: compile x86, boot machine and run xfstests
Signed-off-by: Anatol Pomozov <anatol.pomozov@gmail.com>
[ Removed line-break, changed to use WARN_ON_ONCE()  - Linus ]
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>