From patchwork Wed Sep 5 09:25:54 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Wen Congyang X-Patchwork-Id: 1407221 Return-Path: X-Original-To: patchwork-linux-sh@patchwork.kernel.org Delivered-To: patchwork-process-083081@patchwork2.kernel.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by patchwork2.kernel.org (Postfix) with ESMTP id 82229DFFCF for ; Wed, 5 Sep 2012 09:21:15 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758456Ab2IEJVM (ORCPT ); Wed, 5 Sep 2012 05:21:12 -0400 Received: from cn.fujitsu.com ([222.73.24.84]:59180 "EHLO song.cn.fujitsu.com" rhost-flags-OK-FAIL-OK-OK) by vger.kernel.org with ESMTP id S1758371Ab2IEJUm (ORCPT ); Wed, 5 Sep 2012 05:20:42 -0400 X-IronPort-AV: E=Sophos;i="4.80,373,1344182400"; d="scan'208";a="5789094" Received: from unknown (HELO tang.cn.fujitsu.com) ([10.167.250.3]) by song.cn.fujitsu.com with ESMTP; 05 Sep 2012 17:19:16 +0800 Received: from fnstmail02.fnst.cn.fujitsu.com (tang.cn.fujitsu.com [127.0.0.1]) by tang.cn.fujitsu.com (8.14.3/8.13.1) with ESMTP id q859KPc4030002; Wed, 5 Sep 2012 17:20:27 +0800 Received: from ghost.fnst.cn.fujitsu.com ([10.167.225.226]) by fnstmail02.fnst.cn.fujitsu.com (Lotus Domino Release 8.5.3) with ESMTP id 2012090517200293-640096 ; Wed, 5 Sep 2012 17:20:02 +0800 From: wency@cn.fujitsu.com To: x86@kernel.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-acpi@vger.kernel.org, linux-s390@vger.kernel.org, linux-sh@vger.kernel.org, linux-ia64@vger.kernel.org, cmetcalf@tilera.com, sparclinux@vger.kernel.org Cc: rientjes@google.com, liuj97@gmail.com, len.brown@intel.com, benh@kernel.crashing.org, paulus@samba.org, cl@linux.com, minchan.kim@gmail.com, akpm@linux-foundation.org, kosaki.motohiro@jp.fujitsu.com, isimatu.yasuaki@jp.fujitsu.com, Wen Congyang Subject: [RFC v9 PATCH 20/21] memory-hotplug: clear hwpoisoned flag when onlining pages Date: Wed, 5 Sep 2012 17:25:54 +0800 Message-Id: <1346837155-534-21-git-send-email-wency@cn.fujitsu.com> X-Mailer: git-send-email 1.7.1 In-Reply-To: <1346837155-534-1-git-send-email-wency@cn.fujitsu.com> References: <1346837155-534-1-git-send-email-wency@cn.fujitsu.com> X-MIMETrack: Itemize by SMTP Server on mailserver/fnst(Release 8.5.3|September 15, 2011) at 2012/09/05 17:20:02, Serialize by Router on mailserver/fnst(Release 8.5.3|September 15, 2011) at 2012/09/05 17:20:05, Serialize complete at 2012/09/05 17:20:05 Sender: linux-sh-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-sh@vger.kernel.org From: Wen Congyang hwpoisoned may set when we offline a page by the sysfs interface /sys/devices/system/memory/soft_offline_page or /sys/devices/system/memory/hard_offline_page. If we don't clear this flag when onlining pages, this page can't be freed, and will not in free list. So we can't offline these pages again. So we should clear this flag when onlining pages. CC: David Rientjes CC: Jiang Liu CC: Len Brown CC: Benjamin Herrenschmidt CC: Paul Mackerras CC: Christoph Lameter Cc: Minchan Kim CC: Andrew Morton CC: KOSAKI Motohiro CC: Yasuaki Ishimatsu Signed-off-by: Wen Congyang --- mm/memory_hotplug.c | 5 +++++ 1 files changed, 5 insertions(+), 0 deletions(-) diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c index 270c249..140c080 100644 --- a/mm/memory_hotplug.c +++ b/mm/memory_hotplug.c @@ -661,6 +661,11 @@ EXPORT_SYMBOL_GPL(__online_page_increment_counters); void __online_page_free(struct page *page) { +#ifdef CONFIG_MEMORY_FAILURE + /* The page may be marked HWPoisoned by soft/hard offline page */ + ClearPageHWPoison(page); +#endif + ClearPageReserved(page); init_page_count(page); __free_page(page);