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 668106B0087 for ; Thu, 18 Nov 2010 03:45:11 -0500 (EST) Date: Thu, 18 Nov 2010 08:44:55 +0000 From: Mel Gorman Subject: Re: [PATCH 0/8] Use memory compaction instead of lumpy reclaim during high-order allocations Message-ID: <20101118084455.GD8135@csn.ul.ie> References: <1290010969-26721-1-git-send-email-mel@csn.ul.ie> <20101117154641.51fd7ce5.akpm@linux-foundation.org> <20101118081254.GB8135@csn.ul.ie> <20101118172627.cf25b83a.kamezawa.hiroyu@jp.fujitsu.com> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-15 Content-Disposition: inline In-Reply-To: <20101118172627.cf25b83a.kamezawa.hiroyu@jp.fujitsu.com> Sender: owner-linux-mm@kvack.org To: KAMEZAWA Hiroyuki Cc: Andrew Morton , Andrea Arcangeli , KOSAKI Motohiro , Rik van Riel , Johannes Weiner , linux-mm@kvack.org, linux-kernel@vger.kernel.org List-ID: On Thu, Nov 18, 2010 at 05:26:27PM +0900, KAMEZAWA Hiroyuki wrote: > On Thu, 18 Nov 2010 08:12:54 +0000 > Mel Gorman wrote: > > > > > I'm hoping that this series also removes the > > > > necessity for the "delete lumpy reclaim" patch from the THP tree. > > > > > > Now I'm sad. I read all that and was thinking "oh goody, we get to > > > delete something for once". But no :( > > > > > > If you can get this stuff to work nicely, why can't we remove lumpy > > > reclaim? > > > > Ultimately we should be able to. Lumpy reclaim is still there for the > > !CONFIG_COMPACTION case and to have an option if we find that compaction > > behaves badly for some reason. > > > > Hmm. CONFIG_COMPACTION depends on CONFIG_MMU. lumpy reclaim will be for NOMMU, > finally ? > Also true. As it is, lumpy reclaim is still there but it's never called if CONFIG_COMPACTION is set so it's already side-lined. -- 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/ . Fight unfair telecom policy in Canada: sign http://dissolvethecrtc.ca/ Don't email: email@kvack.org