From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail144.messagelabs.com (mail144.messagelabs.com [216.82.254.51]) by kanga.kvack.org (Postfix) with ESMTP id ABADB6B0071 for ; Fri, 19 Nov 2010 10:46:31 -0500 (EST) Date: Fri, 19 Nov 2010 10:45:40 -0500 From: Ted Ts'o Subject: Re: [PATCH 0/8] Use memory compaction instead of lumpy reclaim during high-order allocations Message-ID: <20101119154540.GG10039@thunk.org> 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> <20101119140532.GH28613@csn.ul.ie> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20101119140532.GH28613@csn.ul.ie> Sender: owner-linux-mm@kvack.org To: Mel Gorman 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 02:05:32PM +0000, Mel Gorman wrote: > > > > 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. I'd suggest doing it now (or soon, before 2.6.40), just to make sure there aren't massive complaints about performance regressions, etc., and then deprecating it at say 2.6.42, and then waiting 6-9 months before removing it. But, I'm a bit more conservative about making such changes. (Said the person who has reluctantly agreed to keep the minixdf mount option after we found users when we tried deprecating it. :-) - Ted -- 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