Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1759211Ab3IBXhs (ORCPT ); Mon, 2 Sep 2013 19:37:48 -0400 Received: from e28smtp08.in.ibm.com ([122.248.162.8]:40778 "EHLO e28smtp08.in.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755302Ab3IBXhS (ORCPT ); Mon, 2 Sep 2013 19:37:18 -0400 From: Wanpeng Li 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 Subject: [PATCH v2 2/4] mm/hwpoison: fix miss catch transparent huge page Date: Tue, 3 Sep 2013 07:36:44 +0800 Message-Id: <1378165006-19435-2-git-send-email-liwanp@linux.vnet.ibm.com> X-Mailer: git-send-email 1.7.5.4 In-Reply-To: <1378165006-19435-1-git-send-email-liwanp@linux.vnet.ibm.com> References: <1378165006-19435-1-git-send-email-liwanp@linux.vnet.ibm.com> X-TM-AS-MML: No X-Content-Scanned: Fidelis XPS MAILER x-cbid: 13090223-2000-0000-0000-00000D8F8801 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1540 Lines: 45 Changelog: *v1 -> v2: reverse PageTransHuge(page) && !PageHuge(page) check PageTransHuge() can't guarantee the page is transparent huge page since it return true for both transparent huge and hugetlbfs pages. This patch fix it by check the page is also !hugetlbfs page. Before patch: [ 121.571128] Injecting memory failure at pfn 23a200 [ 121.571141] MCE 0x23a200: huge page recovery: Delayed [ 140.355100] MCE: Memory failure is now running on 0x23a200 After patch: [ 94.290793] Injecting memory failure at pfn 23a000 [ 94.290800] MCE 0x23a000: huge page recovery: Delayed [ 105.722303] MCE: Software-unpoisoned page 0x23a000 Signed-off-by: Wanpeng Li --- mm/memory-failure.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/mm/memory-failure.c b/mm/memory-failure.c index e28ee77..b114570 100644 --- a/mm/memory-failure.c +++ b/mm/memory-failure.c @@ -1349,7 +1349,7 @@ int unpoison_memory(unsigned long pfn) * worked by memory_failure() and the page lock is not held yet. * In such case, we yield to memory_failure() and make unpoison fail. */ - if (PageTransHuge(page)) { + if (!PageHuge(page) && PageTransHuge(page)) { pr_info("MCE: Memory failure is now running on %#lx\n", pfn); return 0; } -- 1.8.1.2 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/