From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from psmtp.com (na3sys010amx122.postini.com [74.125.245.122]) by kanga.kvack.org (Postfix) with SMTP id 3282E6B005A for ; Wed, 9 Jan 2013 18:33:26 -0500 (EST) Date: Wed, 9 Jan 2013 15:33:24 -0800 From: Andrew Morton Subject: Re: [PATCH v6 00/15] memory-hotplug: hot-remove physical memory Message-Id: <20130109153324.bbd019b3.akpm@linux-foundation.org> In-Reply-To: <1357723959-5416-1-git-send-email-tangchen@cn.fujitsu.com> References: <1357723959-5416-1-git-send-email-tangchen@cn.fujitsu.com> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org List-ID: To: Tang Chen Cc: rientjes@google.com, len.brown@intel.com, benh@kernel.crashing.org, paulus@samba.org, cl@linux.com, minchan.kim@gmail.com, kosaki.motohiro@jp.fujitsu.com, isimatu.yasuaki@jp.fujitsu.com, wujianguo@huawei.com, wency@cn.fujitsu.com, hpa@zytor.com, linfeng@cn.fujitsu.com, laijs@cn.fujitsu.com, mgorman@suse.de, yinghai@kernel.org, glommer@parallels.com, 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 On Wed, 9 Jan 2013 17:32:24 +0800 Tang Chen wrote: > This patch-set aims to implement physical memory hot-removing. As you were on th patch delivery path, all of these patches should have your Signed-off-by:. But some were missing it. I fixed this in my copy of the patches. I suspect this patchset adds a significant amount of code which will not be used if CONFIG_MEMORY_HOTPLUG=n. "[PATCH v6 06/15] memory-hotplug: implement register_page_bootmem_info_section of sparse-vmemmap", for example. This is not a good thing, so please go through the patchset (in fact, go through all the memhotplug code) and let's see if we can reduce the bloat for CONFIG_MEMORY_HOTPLUG=n kernels. This needn't be done immediately - it would be OK by me if you were to defer this exercise until all the new memhotplug code is largely in place. But please, let's do it. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org