Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756005AbYAWSmQ (ORCPT ); Wed, 23 Jan 2008 13:42:16 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751103AbYAWSmD (ORCPT ); Wed, 23 Jan 2008 13:42:03 -0500 Received: from relay2.sgi.com ([192.48.171.30]:38814 "EHLO relay.sgi.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1752856AbYAWSmB (ORCPT ); Wed, 23 Jan 2008 13:42:01 -0500 Date: Wed, 23 Jan 2008 10:41:59 -0800 (PST) From: Christoph Lameter X-X-Sender: clameter@schroedinger.engr.sgi.com To: Mel Gorman cc: akpm@linux-foundation.org, Pekka Enberg , linux-kernel@vger.kernel.org, linuxppc-dev@ozlabs.org, "Aneesh Kumar K.V" , hanth Aravamudan , KAMEZAWA Hiroyuki , lee.schermerhorn@hp.com, Linux MM , Olaf Hering Subject: Re: [PATCH] Fix boot problem in situations where the boot CPU is running on a memoryless node In-Reply-To: <20080123135513.GA14175@csn.ul.ie> Message-ID: References: <20080118213011.GC10491@csn.ul.ie> <20080118225713.GA31128@aepfle.de> <20080122195448.GA15567@csn.ul.ie> <20080122214505.GA15674@aepfle.de> <20080123075821.GA17713@aepfle.de> <20080123105044.GD21455@csn.ul.ie> <20080123121459.GA18631@aepfle.de> <20080123125236.GA18876@aepfle.de> <20080123135513.GA14175@csn.ul.ie> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 924 Lines: 18 On Wed, 23 Jan 2008, Mel Gorman wrote: > This patch adds the necessary checks to make sure a kmem_list3 exists for > the preferred node used when growing the cache. If the preferred node has > no nodelist then the currently running node is used instead. This > problem only affects the SLAB allocator, SLUB appears to work fine. That is a dangerous thing to do. SLAB per cpu queues will contain foreign objects which may cause troubles when pushing the objects back. I think we may be lucky that these objects are consumed at boot. If all of the foreign objects are consumed at boot then we are fine. At least an explanation as to this issue should be added to the patch. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/