From: Paul E. McKenney <paul.mckenney@linaro.org>
Date: Thu, 4 Aug 2011 14:55:34 +0000 (-0700)
Subject: rcu: Simplify unboosting checks
X-Git-Tag: v3.2-rc1~165^2^2~9
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=82e78d80fc392ac7e98326bc8beeb8a679913ffd;p=pandora-kernel.git

rcu: Simplify unboosting checks

Commit 7765be (Fix RCU_BOOST race handling current->rcu_read_unlock_special)
introduced a new ->rcu_boosted field in the task structure.  This is
redundant because the existing ->rcu_boost_mutex will be non-NULL at
any time that ->rcu_boosted is nonzero.  Therefore, this commit removes
->rcu_boosted and tests ->rcu_boost_mutex instead.

Signed-off-by: Paul E. McKenney <paul.mckenney@linaro.org>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
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