From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752916Ab2GTHFx (ORCPT ); Fri, 20 Jul 2012 03:05:53 -0400 Received: from cn.fujitsu.com ([222.73.24.84]:6137 "EHLO song.cn.fujitsu.com" rhost-flags-OK-FAIL-OK-OK) by vger.kernel.org with ESMTP id S1752630Ab2GTHFs (ORCPT ); Fri, 20 Jul 2012 03:05:48 -0400 X-IronPort-AV: E=Sophos;i="4.77,621,1336320000"; d="scan'208";a="5444854" Message-ID: <5009046C.106@cn.fujitsu.com> Date: Fri, 20 Jul 2012 15:10:36 +0800 From: Wen Congyang User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.1.9) Gecko/20100413 Fedora/3.0.4-2.fc13 Thunderbird/3.0.4 MIME-Version: 1.0 To: linux-mm@kvack.org, linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-acpi@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, Yasuaki ISIMATU Subject: [RFC PATCH 3/8] memory-hotplug: call remove_memory() to cleanup when removing memory device References: <5009038A.4090001@cn.fujitsu.com> In-Reply-To: <5009038A.4090001@cn.fujitsu.com> X-MIMETrack: Itemize by SMTP Server on mailserver/fnst(Release 8.5.3|September 15, 2011) at 2012/07/20 15:06:25, Serialize by Router on mailserver/fnst(Release 8.5.3|September 15, 2011) at 2012/07/20 15:06:28, Serialize complete at 2012/07/20 15:06:28 Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset=UTF-8 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org We should remove the following things when removing the memory device: 1. memmap and related sysfs files 2. iomem_resource 3. mem_section and related sysfs files 4. node and related sysfs files The function remove_memory() can do this. So call it after the memory device is offlined. 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 --- drivers/acpi/acpi_memhotplug.c | 7 ++++++- 1 files changed, 6 insertions(+), 1 deletions(-) diff --git a/drivers/acpi/acpi_memhotplug.c b/drivers/acpi/acpi_memhotplug.c index 712e767..58e4e63 100644 --- a/drivers/acpi/acpi_memhotplug.c +++ b/drivers/acpi/acpi_memhotplug.c @@ -315,7 +315,7 @@ static int acpi_memory_disable_device(struct acpi_memory_device *mem_device) { int result; struct acpi_memory_info *info, *n; - + int node = mem_device->nid; /* * Ask the VM to offline this memory range. @@ -330,6 +330,11 @@ static int acpi_memory_disable_device(struct acpi_memory_device *mem_device) if (result) return result; } + + result = remove_memory(node, info->start_addr, + info->length); + if (result) + return result; } list_del(&info->list); kfree(info); -- 1.7.1