From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S268232AbUIKRlR (ORCPT ); Sat, 11 Sep 2004 13:41:17 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S268210AbUIKRlR (ORCPT ); Sat, 11 Sep 2004 13:41:17 -0400 Received: from e1.ny.us.ibm.com ([32.97.182.101]:12534 "EHLO e1.ny.us.ibm.com") by vger.kernel.org with ESMTP id S268232AbUIKRk1 (ORCPT ); Sat, 11 Sep 2004 13:40:27 -0400 Subject: Re: [Patch 4/4] cpusets top mask just online, not all possible From: Dave Hansen To: Paul Jackson Cc: Anton Blanchard , Andrew Morton , Simon.Derr@bull.net, Linux Kernel Mailing List , Andi Kleen , IWAMOTO Toshihiro , "Martin J. Bligh" In-Reply-To: <20040911100731.2f400271.pj@sgi.com> References: <20040911082810.10372.86008.84920@sam.engr.sgi.com> <20040911082834.10372.51697.75658@sam.engr.sgi.com> <20040911141001.GD32755@krispykreme> <20040911100731.2f400271.pj@sgi.com> Content-Type: text/plain Message-Id: <1094924372.3997.16.camel@localhost> Mime-Version: 1.0 X-Mailer: Ximian Evolution 1.4.6 Date: Sat, 11 Sep 2004 10:39:32 -0700 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Now that I've actuallly _looked_ at your code, I noticed that the mems_allowed really is just a nodemask_t. So, you shouldn't have much to worry about from the current memory hotplug stuff because we don't mess with hotplugging actual NUMA nodes yet. As I eluded to before, you might need notification of we ever get down to a zero-sized node, but that should be id. You'll certainly need notification when entire nodes go offline, so I'm adding Martin Bligh to the cc list (we just talked about NUMA hotplug yesterday). Martin, you might want to look back in your LKML archives for where this discussion came from. -- Dave