From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail190.messagelabs.com (mail190.messagelabs.com [216.82.249.51]) by kanga.kvack.org (Postfix) with ESMTP id 1E8D56B004A for ; Fri, 19 Nov 2010 09:05:49 -0500 (EST) Date: Fri, 19 Nov 2010 14:05:32 +0000 From: Mel Gorman Subject: Re: [PATCH 0/8] Use memory compaction instead of lumpy reclaim during high-order allocations Message-ID: <20101119140532.GH28613@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> <20101118083828.GA24635@cmpxchg.org> <20101118092044.GE8135@csn.ul.ie> <20101118114928.ecb2d6b0.akpm@linux-foundation.org> <20101119104856.GB28613@csn.ul.ie> <4B8266CB-F658-4CC8-BCA3-677C22BAFAE0@mit.edu> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-15 Content-Disposition: inline In-Reply-To: <4B8266CB-F658-4CC8-BCA3-677C22BAFAE0@mit.edu> Sender: owner-linux-mm@kvack.org To: Theodore Tso Cc: Andrew Morton , Johannes Weiner , KAMEZAWA Hiroyuki , Andrea Arcangeli , KOSAKI Motohiro , Rik van Riel , linux-mm@kvack.org, linux-kernel@vger.kernel.org List-ID: On Fri, Nov 19, 2010 at 07:43:02AM -0500, Theodore Tso wrote: > > On Nov 19, 2010, at 5:48 AM, Mel Gorman wrote: > > > At least as long as !CONFIG_COMPACTION exists. That will be a while because > > bear in mind CONFIG_COMPACTION is disabled by default (although I believe > > some distros are enabling it at least). Maybe we should choose to deprecate > > it in 2.6.40 and delete it at the infamous time of 2.6.42? That would give > > ample time to iron out any issues that crop up with reclaim/compaction > > (what this series has turned into). > > How about making the default before 2.6.40, as an initial step? > It'd be a reasonable way of ensuring it's being tested everywhere and not by those that are interested or using distro kernel configs. I guess we'd set to "default y" in the same patch that adds the note to feature-removal-schedule.txt. -- 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