From ff382810590e7182a1482a225965d6943e61699c Mon Sep 17 00:00:00 2001
From: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>
Date: Tue, 17 Feb 2015 10:00:06 -0800
Subject: [PATCH] documentation: Clarify control-dependency pairing

This commit explicitly states that control dependencies pair normally
with other barriers, and gives an example of such pairing.

Reported-by: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
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