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Date: Thu, 26 Feb 2015 13:30:51 +0100
From: Michal Hocko <mhocko@suse.cz>
Subject: Re: [mmotm:master 52/197] mm/cma_debug.c:71:4: error: invalid use of
 undefined type 'struct page'
Message-ID: <20150226123051.GA15187@dhcp22.suse.cz>
References: <201502261409.SlfWs6bQ%fengguang.wu@intel.com>
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To: kbuild test robot <fengguang.wu@intel.com>
Cc: Sasha Levin <sasha.levin@oracle.com>, kbuild-all@01.org, Johannes Weiner <hannes@cmpxchg.org>, Andrew Morton <akpm@linux-foundation.org>, Linux Memory Management List <linux-mm@kvack.org>

I have just encoutered the same and the following patch should fix it:
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