From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from psmtp.com (na3sys010amx125.postini.com [74.125.245.125]) by kanga.kvack.org (Postfix) with SMTP id 0DD1C6B0075 for ; Fri, 19 Oct 2012 03:07:45 -0400 (EDT) Received: by mail-oa0-f41.google.com with SMTP id k14so174104oag.14 for ; Fri, 19 Oct 2012 00:07:45 -0700 (PDT) MIME-Version: 1.0 In-Reply-To: <1350629202-9664-10-git-send-email-wency@cn.fujitsu.com> References: <1350629202-9664-1-git-send-email-wency@cn.fujitsu.com> <1350629202-9664-10-git-send-email-wency@cn.fujitsu.com> From: KOSAKI Motohiro Date: Fri, 19 Oct 2012 03:07:24 -0400 Message-ID: Subject: Re: [PATCH v3 9/9] memory-hotplug: allocate zone's pcp before onlining pages Content-Type: text/plain; charset=ISO-8859-1 Sender: owner-linux-mm@kvack.org List-ID: To: wency@cn.fujitsu.com Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org, rientjes@google.com, liuj97@gmail.com, len.brown@intel.com, benh@kernel.crashing.org, paulus@samba.org, minchan.kim@gmail.com, akpm@linux-foundation.org, isimatu.yasuaki@jp.fujitsu.com, Christoph Lameter On Fri, Oct 19, 2012 at 2:46 AM, wrote: > From: Wen Congyang > > We use __free_page() to put a page to buddy system when onlining pages. > __free_page() will store NR_FREE_PAGES in zone's pcp.vm_stat_diff, so we > should allocate zone's pcp before onlining pages, otherwise we will lose > some free pages. > > 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 Looks good. Acked-by: KOSAKI Motohiro -- 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