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From: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Subject: [PATCH v3 3/6] mm/mempolicy: correct putback method for isolate pages if failed
Date: Fri, 13 Dec 2013 15:53:28 +0900
Message-Id: <1386917611-11319-4-git-send-email-iamjoonsoo.kim@lge.com>
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To: Andrew Morton <akpm@linux-foundation.org>
Cc: Mel Gorman <mgorman@suse.de>, Rik van Riel <riel@redhat.com>, Rafael Aquini <aquini@redhat.com>, Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>, Christoph Lameter <cl@linux.com>, Joonsoo Kim <js1304@gmail.com>, linux-kernel@vger.kernel.org, linux-mm@kvack.org, Vlastimil Babka <vbabka@suse.cz>, Zhang Yanfei <zhangyanfei@cn.fujitsu.com>, Wanpeng Li <liwanp@linux.vnet.ibm.com>, Joonsoo Kim <iamjoonsoo.kim@lge.com>

queue_pages_range() isolates hugetlbfs pages and putback_lru_pages() can't
handle these. We should change it to putback_movable_pages().

Naoya said that it is worth going into stable, because it can break
in-use hugepage list.

Cc: <stable@vger.kernel.org> # 3.12
Acked-by: Rafael Aquini <aquini@redhat.com>
Reviewed-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Reviewed-by: Wanpeng Li <liwanp@linux.vnet.ibm.com>
Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@lge.com>

diff --git a/mm/mempolicy.c b/mm/mempolicy.c
index eca4a31..6d04d37 100644
--- a/mm/mempolicy.c
+++ b/mm/mempolicy.c
@@ -1318,7 +1318,7 @@ static long do_mbind(unsigned long start, unsigned long len,
 		if (nr_failed && (flags & MPOL_MF_STRICT))
 			err = -EIO;
 	} else
-		putback_lru_pages(&pagelist);
+		putback_movable_pages(&pagelist);
 
 	up_write(&mm->mmap_sem);
  mpol_out:
-- 
1.7.9.5

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