Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S965061AbVKBOvw (ORCPT ); Wed, 2 Nov 2005 09:51:52 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S965062AbVKBOvw (ORCPT ); Wed, 2 Nov 2005 09:51:52 -0500 Received: from dvhart.com ([64.146.134.43]:20139 "EHLO localhost.localdomain") by vger.kernel.org with ESMTP id S965061AbVKBOvv (ORCPT ); Wed, 2 Nov 2005 09:51:51 -0500 Date: Wed, 02 Nov 2005 06:51:37 -0800 From: "Martin J. Bligh" Reply-To: "Martin J. Bligh" To: Nick Piggin , Yasunori Goto Cc: Dave Hansen , Ingo Molnar , Mel Gorman , Andrew Morton , kravetz@us.ibm.com, linux-mm , Linux Kernel Mailing List , lhms Subject: Re: [Lhms-devel] [PATCH 0/7] Fragmentation Avoidance V19 Message-ID: <253150000.1130943095@[10.10.2.4]> In-Reply-To: <43687C3D.7060706@yahoo.com.au> References: <1130917338.14475.133.camel@localhost> <436877DB.7020808@yahoo.com.au> <20051102172729.9E7C.Y-GOTO@jp.fujitsu.com> <43687C3D.7060706@yahoo.com.au> X-Mailer: Mulberry/2.2.1 (Linux/x86) MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Content-Disposition: inline Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 966 Lines: 19 > Well I think it can satisfy hugepage allocations simply because > we can be reasonably sure of being able to free contiguous regions. > Of course it will be memory no longer easily reclaimable, same as > the case for the frag patches. Nor would be name ZONE_REMOVABLE any > longer be the most appropriate! > > But my point is, the basic mechanism is there and is workable. > Hugepages and memory unplug are the two main reasons for IBM to be > pushing this AFAIKS. No, that's not true - those are just the "exciting" features that go on the back of it. Look back in this email thread - there's lots of other reasons to fix fragmentation. I don't believe you can eliminate all the order > 0 allocations in the kernel. - 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/