From 9d162cd06349dfee6b4f254b3abf1355cf0aee43 Mon Sep 17 00:00:00 2001
From: Josh Triplett <josh@joshtriplett.org>
Date: Sun, 1 Sep 2013 16:42:52 -0700
Subject: [PATCH] rcu: Make rcu_assign_pointer's assignment volatile and
 type-safe

The rcu_assign_pointer() primitive needs to use ACCESS_ONCE to make
the assignment to the destination pointer volatile, to protect against
compilers too clever for their own good.

Signed-off-by: Josh Triplett <josh@joshtriplett.org>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
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