From: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Date: Wed, 12 Dec 2012 21:52:30 +0000 (-0800)
Subject: hwpoison, hugetlbfs: fix RSS-counter warning
X-Git-Tag: omap-for-v3.8/fixes-for-merge-window-v4-signed~33^2~4
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=5f24ae585be985691c017b7ab90b3669dca32d6d;p=pandora-kernel.git

hwpoison, hugetlbfs: fix RSS-counter warning

Memory error handling on hugepages can break a RSS counter, which emits a
message like "Bad rss-counter state mm:ffff88040abecac0 idx:1 val:-1".
This is because PageAnon returns true for hugepage (this behavior is
necessary for reverse mapping to work on hugetlbfs).

[akpm@linux-foundation.org: clean up code layout]
Signed-off-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Cc: Andi Kleen <andi.kleen@intel.com>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Wu Fengguang <fengguang.wu@intel.com>
Cc: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

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