From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1767691AbXEDFsA (ORCPT ); Fri, 4 May 2007 01:48:00 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1767694AbXEDFr7 (ORCPT ); Fri, 4 May 2007 01:47:59 -0400 Received: from smtp1.linux-foundation.org ([65.172.181.25]:59120 "EHLO smtp1.linux-foundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1767691AbXEDFru (ORCPT ); Fri, 4 May 2007 01:47:50 -0400 Date: Thu, 3 May 2007 22:47:30 -0700 From: Andrew Morton To: KAMEZAWA Hiroyuki Cc: LKML , Linux-MM , Christoph Lameter , Lee.Schermerhorn@hp.com Subject: Re: [PATCH] change global zonelist order v4 [0/2] Message-Id: <20070503224730.3bc6f8a8.akpm@linux-foundation.org> In-Reply-To: <20070427144530.ae42ee25.kamezawa.hiroyu@jp.fujitsu.com> References: <20070427144530.ae42ee25.kamezawa.hiroyu@jp.fujitsu.com> X-Mailer: Sylpheed version 2.2.7 (GTK+ 2.8.17; x86_64-unknown-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Fri, 27 Apr 2007 14:45:30 +0900 KAMEZAWA Hiroyuki wrote: > Hi, this is version 4. including Lee Schermerhon's good rework. > and automatic configuration at boot time. hm, this adds rather a lot of code. Have we established that it's worth it? And it's complex - how do poor users know what to do with this new control? This: + * = "[dD]efault | "0" - default, automatic configuration. + * = "[nN]ode"|"1" - order by node locality, + * then zone within node. + * = "[zZ]one"|"2" - order by zone, then by locality within zone seems a bit excessive. I think just the 0/1/2 plus documentation would suffice? I haven't followed this discussion very closely I'm afraid. If we came up with a good reason why Linux needs this feature then could someone please (re)describe it? Thanks.