From: Wanpeng Li <liwanp@linux.vnet.ibm.com>
Date: Mon, 30 Sep 2013 20:45:23 +0000 (-0700)
Subject: mm/hwpoison: fix false report on 2nd attempt at page recovery
X-Git-Tag: v3.12-rc4~35^2~4
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=2d421acd1568cf2d83739a1afec8e18edb9e3d16;p=pandora-kernel.git

mm/hwpoison: fix false report on 2nd attempt at page recovery

If the page is poisoned by software injection w/ MF_COUNT_INCREASED
flag, there is a false report during the 2nd attempt at page recovery
which is not truthful.

This patch fixes it by reporting the first attempt to try free buddy
page recovery if MF_COUNT_INCREASED is set.

Before patch:

[  346.332041] Injecting memory failure at pfn 200010
[  346.332189] MCE 0x200010: free buddy, 2nd try page recovery: Delayed

After patch:

[  297.742600] Injecting memory failure at pfn 200010
[  297.742941] MCE 0x200010: free buddy page recovery: Delayed

Reviewed-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Acked-by: Andi Kleen <ak@linux.intel.com>
Signed-off-by: Wanpeng Li <liwanp@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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