From c199068913c9c5cbb5498e289bb387703e087ea8 Mon Sep 17 00:00:00 2001
From: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>
Date: Fri, 23 Jan 2015 22:29:37 -0800
Subject: [PATCH] rcu: Eliminate ->onoff_mutex from rcu_node structure

Because that RCU grace-period initialization need no longer exclude
CPU-hotplug operations, this commit eliminates the ->onoff_mutex and
its uses.

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