From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from song.cn.fujitsu.com (unknown [222.73.24.84]) by ozlabs.org (Postfix) with ESMTP id AA09B2C0095 for ; Mon, 28 Jan 2013 13:00:05 +1100 (EST) Message-ID: <5105D57D.3050900@cn.fujitsu.com> Date: Mon, 28 Jan 2013 09:33:49 +0800 From: Tang Chen MIME-Version: 1.0 To: Michal Hocko Subject: Re: [PATCH Bug fix 0/5] Bug fix for physical memory hot-remove. References: <1358854984-6073-1-git-send-email-tangchen@cn.fujitsu.com> <1358944171.3351.1.camel@kernel> <20130125131740.GA1615@dhcp22.suse.cz> In-Reply-To: <20130125131740.GA1615@dhcp22.suse.cz> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Cc: len.brown@intel.com, linux-mm@kvack.org, paulus@samba.org, hpa@zytor.com, cl@linux.com, sfr@canb.auug.org.au, x86@kernel.org, linux-acpi@vger.kernel.org, isimatu.yasuaki@jp.fujitsu.com, linfeng@cn.fujitsu.com, mgorman@suse.de, kosaki.motohiro@jp.fujitsu.com, rientjes@google.com, Simon Jeons , jiang.liu@huawei.com, wency@cn.fujitsu.com, julian.calaby@gmail.com, glommer@parallels.com, wujianguo@huawei.com, yinghai@kernel.org, laijs@cn.fujitsu.com, linux-kernel@vger.kernel.org, minchan.kim@gmail.com, akpm@linux-foundation.org, linuxppc-dev@lists.ozlabs.org List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , On 01/25/2013 09:17 PM, Michal Hocko wrote: > On Wed 23-01-13 06:29:31, Simon Jeons wrote: >> On Tue, 2013-01-22 at 19:42 +0800, Tang Chen wrote: >>> Here are some bug fix patches for physical memory hot-remove. All these >>> patches are based on the latest -mm tree. >>> git://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git akpm >>> >>> And patch1 and patch3 are very important. >>> patch1: free compound pages when freeing memmap, otherwise the kernel >>> will panic the next time memory is hot-added. >>> patch3: the old way of freeing pagetable pages was wrong. We should never >>> split larger pages into small ones. >>> >>> >> >> Hi Tang, >> >> I remember your big physical memory hot-remove patchset has already >> merged by Andrew, but where I can find it? Could you give me git tree >> address? > > Andrew tree is also mirrored into a git tree. > http://git.kernel.org/?p=linux/kernel/git/mhocko/mm.git;a=summary > > It contains only Memory management patches on top of the last major > release (since-.X.Y branch). Hi Michal, I'm not sure I got your meaning. :) In http://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git akpm, I can find the following commit. commit deed0460e01b3968f2cf46fb94851936535b7e0d Author: Tang Chen Date: Sat Jan 19 11:07:13 2013 +1100 memory-hotplug: do not allocate pgdat if it was not freed when offline. This is one of memory hot-remove patches. Please try to update the mirror tree, and try to find the above commit. Thanks. :)