From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from psmtp.com (na3sys010amx197.postini.com [74.125.245.197]) by kanga.kvack.org (Postfix) with SMTP id 8336A6B0044 for ; Sat, 14 Sep 2013 19:54:39 -0400 (EDT) Received: from /spool/local by e28smtp04.in.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Sun, 15 Sep 2013 05:15:54 +0530 Received: from d28relay03.in.ibm.com (d28relay03.in.ibm.com [9.184.220.60]) by d28dlp02.in.ibm.com (Postfix) with ESMTP id 25A3E3940057 for ; Sun, 15 Sep 2013 05:24:21 +0530 (IST) Received: from d28av01.in.ibm.com (d28av01.in.ibm.com [9.184.220.63]) by d28relay03.in.ibm.com (8.13.8/8.13.8/NCO v10.0) with ESMTP id r8ENuaSP46399710 for ; Sun, 15 Sep 2013 05:26:36 +0530 Received: from d28av01.in.ibm.com (localhost [127.0.0.1]) by d28av01.in.ibm.com (8.14.4/8.14.4/NCO v10.0 AVout) with ESMTP id r8ENsXl1029643 for ; Sun, 15 Sep 2013 05:24:34 +0530 From: Wanpeng Li Subject: [RESEND PATCH v2 3/4] mm/hwpoison: fix false report 2nd try page recovery Date: Sun, 15 Sep 2013 07:53:58 +0800 Message-Id: <1379202839-23939-3-git-send-email-liwanp@linux.vnet.ibm.com> In-Reply-To: <1379202839-23939-1-git-send-email-liwanp@linux.vnet.ibm.com> References: <1379202839-23939-1-git-send-email-liwanp@linux.vnet.ibm.com> Sender: owner-linux-mm@kvack.org List-ID: To: Andrew Morton Cc: Andi Kleen , Fengguang Wu , Naoya Horiguchi , Tony Luck , gong.chen@linux.intel.com, linux-mm@kvack.org, linux-kernel@vger.kernel.org, Wanpeng Li If the page is poisoned by software inject w/ MF_COUNT_INCREASED flag, there is a false report 2nd try page recovery which is not truth, this patch fix it by report first 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 Signed-off-by: Wanpeng Li --- mm/memory-failure.c | 6 ++++-- 1 files changed, 4 insertions(+), 2 deletions(-) diff --git a/mm/memory-failure.c b/mm/memory-failure.c index b114570..6293164 100644 --- a/mm/memory-failure.c +++ b/mm/memory-failure.c @@ -1114,8 +1114,10 @@ int memory_failure(unsigned long pfn, int trapno, int flags) * shake_page could have turned it free. */ if (is_free_buddy_page(p)) { - action_result(pfn, "free buddy, 2nd try", - DELAYED); + if (flags & MF_COUNT_INCREASED) + action_result(pfn, "free buddy", DELAYED); + else + action_result(pfn, "free buddy, 2nd try", DELAYED); return 0; } action_result(pfn, "non LRU", IGNORED); -- 1.7.5.4 -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org