Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752740Ab2H1J77 (ORCPT ); Tue, 28 Aug 2012 05:59:59 -0400 Received: from cn.fujitsu.com ([222.73.24.84]:56202 "EHLO song.cn.fujitsu.com" rhost-flags-OK-FAIL-OK-OK) by vger.kernel.org with ESMTP id S1751210Ab2H1J7x (ORCPT ); Tue, 28 Aug 2012 05:59:53 -0400 X-IronPort-AV: E=Sophos;i="4.77,841,1336320000"; d="scan'208";a="5739719" 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 v8 PATCH 20/20] memory-hotplug: clear hwpoisoned flag when onlining pages Date: Tue, 28 Aug 2012 18:00:27 +0800 Message-Id: <1346148027-24468-21-git-send-email-wency@cn.fujitsu.com> X-Mailer: git-send-email 1.7.1 In-Reply-To: <1346148027-24468-1-git-send-email-wency@cn.fujitsu.com> References: <1346148027-24468-1-git-send-email-wency@cn.fujitsu.com> X-MIMETrack: Itemize by SMTP Server on mailserver/fnst(Release 8.5.3|September 15, 2011) at 2012/08/28 17:55:07, Serialize by Router on mailserver/fnst(Release 8.5.3|September 15, 2011) at 2012/08/28 17:55:19, Serialize complete at 2012/08/28 17:55:19 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1691 Lines: 48 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 fb8af64..85603c4 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); -- 1.7.1 -- 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/