Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1759165Ab2KAJjI (ORCPT ); Thu, 1 Nov 2012 05:39:08 -0400 Received: from cn.fujitsu.com ([222.73.24.84]:5829 "EHLO song.cn.fujitsu.com" rhost-flags-OK-FAIL-OK-OK) by vger.kernel.org with ESMTP id S1752887Ab2KAJjB (ORCPT ); Thu, 1 Nov 2012 05:39:01 -0400 X-IronPort-AV: E=Sophos;i="4.80,693,1344182400"; d="scan'208";a="6116036" From: Wen Congyang 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: David Rientjes , Jiang Liu , Len Brown , benh@kernel.crashing.org, paulus@samba.org, Christoph Lameter , Minchan Kim , Andrew Morton , KOSAKI Motohiro , Yasuaki Ishimatsu , Jianguo Wu , Wen Congyang Subject: [PATCH v3 06/12] memory-hotplug: unregister memory section on SPARSEMEM_VMEMMAP Date: Thu, 1 Nov 2012 17:44:37 +0800 Message-Id: <1351763083-7905-7-git-send-email-wency@cn.fujitsu.com> X-Mailer: git-send-email 1.8.0 In-Reply-To: <1351763083-7905-1-git-send-email-wency@cn.fujitsu.com> References: <1351763083-7905-1-git-send-email-wency@cn.fujitsu.com> X-MIMETrack: Itemize by SMTP Server on mailserver/fnst(Release 8.5.3|September 15, 2011) at 2012/11/01 17:38:11, Serialize by Router on mailserver/fnst(Release 8.5.3|September 15, 2011) at 2012/11/01 17:38:13, Serialize complete at 2012/11/01 17:38:13 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1672 Lines: 52 From: Yasuaki Ishimatsu Currently __remove_section for SPARSEMEM_VMEMMAP does nothing. But even if we use SPARSEMEM_VMEMMAP, we can unregister the memory_section. So the patch add unregister_memory_section() into __remove_section(). CC: David Rientjes CC: Jiang Liu CC: Len Brown CC: Christoph Lameter Cc: Minchan Kim CC: Andrew Morton CC: KOSAKI Motohiro CC: Wen Congyang Signed-off-by: Yasuaki Ishimatsu --- mm/memory_hotplug.c | 13 ++++++++----- 1 file changed, 8 insertions(+), 5 deletions(-) diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c index ca07433..66a79a7 100644 --- a/mm/memory_hotplug.c +++ b/mm/memory_hotplug.c @@ -286,11 +286,14 @@ static int __meminit __add_section(int nid, struct zone *zone, #ifdef CONFIG_SPARSEMEM_VMEMMAP static int __remove_section(struct zone *zone, struct mem_section *ms) { - /* - * XXX: Freeing memmap with vmemmap is not implement yet. - * This should be removed later. - */ - return -EBUSY; + int ret = -EINVAL; + + if (!valid_section(ms)) + return ret; + + ret = unregister_memory_section(ms); + + return ret; } #else static int __remove_section(struct zone *zone, struct mem_section *ms) -- 1.8.0 -- 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/