From: Kirill Tkhai <tkhai@yandex.ru>
Date: Thu, 4 Jul 2013 18:48:20 +0000 (+0400)
Subject: sched/__wake_up_sync_key(): Fix nr_exclusive tasks which lead to WF_SYNC clearing
X-Git-Tag: v3.12-rc1~167^2~17
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=cedce3e730833d26a37826a96e1905b6ef387df9;p=pandora-kernel.git

sched/__wake_up_sync_key(): Fix nr_exclusive tasks which lead to WF_SYNC clearing

Only one task can replace the waker.

Signed-off-by: Kirill Tkhai <tkhai@yandex.ru>
CC: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/512421372963700@web25f.yandex.ru
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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