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Date: Fri, 18 Aug 2017 10:49:12 +0200
From: Michal Hocko <mhocko@kernel.org>
To: David Rientjes <rientjes@google.com>
Cc: Andrew Morton <akpm@linux-foundation.org>,
        Vlastimil Babka <vbabka@suse.cz>,
        Mel Gorman <mgorman@techsingularity.net>, linux-mm@kvack.org,
        linux-kernel@vger.kernel.org
Subject: Re: [patch 2/2] mm, compaction: persistently skip hugetlbfs
 pageblocks
Message-ID: <20170818084912.GA18513@dhcp22.suse.cz>
References: <alpine.DEB.2.10.1708151638550.106658@chino.kir.corp.google.com>
 <alpine.DEB.2.10.1708151639130.106658@chino.kir.corp.google.com>
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I am getting 
mm/compaction.c: In function 'isolate_freepages_block':
mm/compaction.c:469:4: error: implicit declaration of function 'pageblock_skip_persistent' [-Werror=implicit-function-declaration]
    if (pageblock_skip_persistent(page, order)) {
    ^
mm/compaction.c:470:5: error: implicit declaration of function 'set_pageblock_skip' [-Werror=implicit-function-declaration]
     set_pageblock_skip(page);

when compaction is disabled because isolate_freepages_block is defined
also when CONFIG_COMPACTION=n. I haven't checked how to fix this
properly yet.
-- 
Michal Hocko
SUSE Labs