From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755436Ab0BRVff (ORCPT ); Thu, 18 Feb 2010 16:35:35 -0500 Received: from gir.skynet.ie ([193.1.99.77]:34840 "EHLO gir.skynet.ie" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753153Ab0BRVfd (ORCPT ); Thu, 18 Feb 2010 16:35:33 -0500 Date: Thu, 18 Feb 2010 21:35:18 +0000 From: Mel Gorman To: Christoph Lameter Cc: KOSAKI Motohiro , Andrea Arcangeli , Adam Litke , Avi Kivity , David Rientjes , linux-kernel@vger.kernel.org, linux-mm@kvack.org, KAMEZAWA Hiroyuki Subject: Re: [PATCH 05/12] Memory compaction core Message-ID: <20100218213518.GD30258@csn.ul.ie> References: <1265976059-7459-1-git-send-email-mel@csn.ul.ie> <1265976059-7459-6-git-send-email-mel@csn.ul.ie> <20100216170014.7309.A69D9226@jp.fujitsu.com> <20100216084800.GC26086@csn.ul.ie> <20100216145943.GA997@csn.ul.ie> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-15 Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.17+20080114 (2008-01-14) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, Feb 18, 2010 at 01:37:35PM -0600, Christoph Lameter wrote: > On Tue, 16 Feb 2010, Mel Gorman wrote: > > > > Oh there are numerous ZONE_DMA pressure issues if you have ancient / > > > screwed up hardware that can only operate on DMA or DMA32 memory. > > > > > > > I've never ran into the issue. I was under the impression that the only > > device that might care these days are floopy disks. > > Kame-san had an issue a year or so ago. > Will add it as a potential follow-on then. I consider Unevictable more important than zone-pressure issues. Neither are going to be done in the first pass. It's complex enough as it is and I'm more concerned with getting teh page migration anon_vma snag ironed out. Can you review the patches related to page migration in v3 please and see what you think? You are much more familiar with the intent of that area than I. -- Mel Gorman Part-time Phd Student Linux Technology Center University of Limerick IBM Dublin Software Lab From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail172.messagelabs.com (mail172.messagelabs.com [216.82.254.3]) by kanga.kvack.org (Postfix) with ESMTP id AD0F56B0078 for ; Thu, 18 Feb 2010 16:35:35 -0500 (EST) Date: Thu, 18 Feb 2010 21:35:18 +0000 From: Mel Gorman Subject: Re: [PATCH 05/12] Memory compaction core Message-ID: <20100218213518.GD30258@csn.ul.ie> References: <1265976059-7459-1-git-send-email-mel@csn.ul.ie> <1265976059-7459-6-git-send-email-mel@csn.ul.ie> <20100216170014.7309.A69D9226@jp.fujitsu.com> <20100216084800.GC26086@csn.ul.ie> <20100216145943.GA997@csn.ul.ie> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-15 Content-Disposition: inline In-Reply-To: Sender: owner-linux-mm@kvack.org To: Christoph Lameter Cc: KOSAKI Motohiro , Andrea Arcangeli , Adam Litke , Avi Kivity , David Rientjes , linux-kernel@vger.kernel.org, linux-mm@kvack.org, KAMEZAWA Hiroyuki List-ID: On Thu, Feb 18, 2010 at 01:37:35PM -0600, Christoph Lameter wrote: > On Tue, 16 Feb 2010, Mel Gorman wrote: > > > > Oh there are numerous ZONE_DMA pressure issues if you have ancient / > > > screwed up hardware that can only operate on DMA or DMA32 memory. > > > > > > > I've never ran into the issue. I was under the impression that the only > > device that might care these days are floopy disks. > > Kame-san had an issue a year or so ago. > Will add it as a potential follow-on then. I consider Unevictable more important than zone-pressure issues. Neither are going to be done in the first pass. It's complex enough as it is and I'm more concerned with getting teh page migration anon_vma snag ironed out. Can you review the patches related to page migration in v3 please and see what you think? You are much more familiar with the intent of that area than I. -- Mel Gorman Part-time Phd Student Linux Technology Center University of Limerick IBM Dublin Software Lab -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org