From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from fgwmail6.fujitsu.co.jp (fgwmail6.fujitsu.co.jp [192.51.44.36]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client did not present a certificate) by ozlabs.org (Postfix) with ESMTPS id 1CD9F2C011B for ; Fri, 20 Jul 2012 17:50:14 +1000 (EST) Received: from m1.gw.fujitsu.co.jp (unknown [10.0.50.71]) by fgwmail6.fujitsu.co.jp (Postfix) with ESMTP id 3B2EE3EE0C8 for ; Fri, 20 Jul 2012 16:50:13 +0900 (JST) Received: from smail (m1 [127.0.0.1]) by outgoing.m1.gw.fujitsu.co.jp (Postfix) with ESMTP id DD65D45DE62 for ; Fri, 20 Jul 2012 16:50:12 +0900 (JST) Received: from s1.gw.fujitsu.co.jp (s1.gw.fujitsu.co.jp [10.0.50.91]) by m1.gw.fujitsu.co.jp (Postfix) with ESMTP id C65E045DE59 for ; Fri, 20 Jul 2012 16:50:12 +0900 (JST) Received: from s1.gw.fujitsu.co.jp (localhost.localdomain [127.0.0.1]) by s1.gw.fujitsu.co.jp (Postfix) with ESMTP id B94E61DB8043 for ; Fri, 20 Jul 2012 16:50:12 +0900 (JST) Received: from g01jpexchyt07.g01.fujitsu.local (g01jpexchyt07.g01.fujitsu.local [10.128.194.46]) by s1.gw.fujitsu.co.jp (Postfix) with ESMTP id 468B81DB8052 for ; Fri, 20 Jul 2012 16:50:12 +0900 (JST) Message-ID: <50090DA4.8040908@jp.fujitsu.com> Date: Fri, 20 Jul 2012 16:49:56 +0900 From: Yasuaki Ishimatsu MIME-Version: 1.0 To: Wen Congyang Subject: Re: [RFC PATCH 3/8] memory-hotplug: call remove_memory() to cleanup when removing memory device References: <5009038A.4090001@cn.fujitsu.com> <5009046C.106@cn.fujitsu.com> In-Reply-To: <5009046C.106@cn.fujitsu.com> Content-Type: text/plain; charset="UTF-8"; format=flowed Cc: len.brown@intel.com, linux-acpi@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, paulus@samba.org, minchan.kim@gmail.com, kosaki.motohiro@jp.fujitsu.com, rientjes@google.com, cl@linux.com, linuxppc-dev@lists.ozlabs.org, akpm@linux-foundation.org, liuj97@gmail.com List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Hi Wen, 2012/07/20 16:10, Wen Congyang wrote: > 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 > --- I have no comment. Reviewed-by: Yasuaki Ishimatsu Thanks, Yasuaki Ishimatsu > 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); >