From a13812683f1118ee4deed88d8d9bc2c268358b2e Mon Sep 17 00:00:00 2001
From: Li Zefan <lizefan@huawei.com>
Date: Wed, 30 Jul 2014 15:07:13 +0800
Subject: [PATCH] cpuset: fix the WARN_ON() in update_nodemasks_hier()

The WARN_ON() is used to check if we break the legal hierarchy, on
which the effective mems should be equal to configured mems.

Reported-by: Mike Qiu <qiudayu@linux.vnet.ibm.com>
Tested-by: Mike Qiu <qiudayu@linux.vnet.ibm.com>
Signed-off-by: Li Zefan <lizefan@huawei.com>
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