From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1031432AbXEDRgN (ORCPT ); Fri, 4 May 2007 13:36:13 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1031433AbXEDRgN (ORCPT ); Fri, 4 May 2007 13:36:13 -0400 Received: from outbound-mail-45.bluehost.com ([69.89.18.14]:41150 "HELO outbound-mail-45.bluehost.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with SMTP id S1031432AbXEDRgM (ORCPT ); Fri, 4 May 2007 13:36:12 -0400 From: Jesse Barnes To: Christoph Lameter Subject: Re: [PATCH] change global zonelist order v4 [0/2] Date: Fri, 4 May 2007 10:36:01 -0700 User-Agent: KMail/1.9.6 Cc: Lee Schermerhorn , Andrew Morton , KAMEZAWA Hiroyuki , LKML , Linux-MM References: <20070427144530.ae42ee25.kamezawa.hiroyu@jp.fujitsu.com> <1178299460.5236.35.camel@localhost> In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200705041036.01904.jbarnes@virtuousgeek.org> X-Identified-User: {642:box128.bluehost.com:virtuous:virtuousgeek.org} {sentby:smtp auth 67.161.73.10 authed with jbarnes@virtuousgeek.org} Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Friday, May 04, 2007, Christoph Lameter wrote: > On Fri, 4 May 2007, Lee Schermerhorn wrote: > > Hmmm... "serious hackery", indeed! ;-) > > Maybe on the arch level but minimal changes to core code. > And it is a step towards avoiding zones in NUMA. You mentioned that if node 0 has a small ZONE_NORMAL and the ZONE_DMA for the system, defaulting to using ZONE_NORMAL on all nodes first would be a bad idea. Is that really true? Maybe for ZONE_DMA32 it is since that first node could have a few gigs of memory, but for regular ZONE_DMA it's probably the right thing to do... So aside from the comment issues Lee already pointed out, I think Kamezawa-san's patch from http://marc.info/?l=linux-mm&m=117758484122663&w=4 seems reasonable. Jesse