From: Anatol Pomozov <anatol.pomozov@gmail.com>
Date: Tue, 7 May 2013 22:37:48 +0000 (-0700)
Subject: kref: minor cleanup
X-Git-Tag: omap-for-v3.10/fixes-for-merge-window-part2~15
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=2d864e41710f1d2ba406fb62018ab0487152e6f2;p=pandora-kernel.git

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>
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