From: Paul E. McKenney <paul.mckenney@linaro.org>
Date: Fri, 9 Dec 2011 22:43:47 +0000 (-0800)
Subject: rcu: Apply ACCESS_ONCE() to rcu_boost() return value
X-Git-Tag: v3.3-rc1~193^2^2~1
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=4f89b336fd1edf0c88875d0b7fcdc288c7de903d;p=pandora-kernel.git

rcu: Apply ACCESS_ONCE() to rcu_boost() return value

Both TINY_RCU's and TREE_RCU's implementations of rcu_boost() access
the ->boost_tasks and ->exp_tasks fields without preventing concurrent
changes to these fields.  This commit therefore applies ACCESS_ONCE in
order to prevent compiler mischief.

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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