From a95cded32de3deae13af34715200532e6823cc9f Mon Sep 17 00:00:00 2001
From: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>
Date: Sun, 1 May 2011 23:21:00 -0700
Subject: [PATCH] sysctl,rcu: Convert call_rcu(free_head) to kfree

The RCU callback free_head just calls kfree(), so we can use kfree_rcu()
instead of call_rcu().

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
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Reading git-format-patch failed