From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail191.messagelabs.com (mail191.messagelabs.com [216.82.242.19]) by kanga.kvack.org (Postfix) with SMTP id 287A36B01F0 for ; Thu, 26 Aug 2010 00:35:53 -0400 (EDT) Received: from m3.gw.fujitsu.co.jp ([10.0.50.73]) by fgwmail7.fujitsu.co.jp (Fujitsu Gateway) with ESMTP id o7Q4ZoJL000315 for (envelope-from kamezawa.hiroyu@jp.fujitsu.com); Thu, 26 Aug 2010 13:35:51 +0900 Received: from smail (m3 [127.0.0.1]) by outgoing.m3.gw.fujitsu.co.jp (Postfix) with ESMTP id C45D045DE52 for ; Thu, 26 Aug 2010 13:35:50 +0900 (JST) Received: from s3.gw.fujitsu.co.jp (s3.gw.fujitsu.co.jp [10.0.50.93]) by m3.gw.fujitsu.co.jp (Postfix) with ESMTP id 980C945DE54 for ; Thu, 26 Aug 2010 13:35:50 +0900 (JST) Received: from s3.gw.fujitsu.co.jp (localhost.localdomain [127.0.0.1]) by s3.gw.fujitsu.co.jp (Postfix) with ESMTP id 76ADE1DB8038 for ; Thu, 26 Aug 2010 13:35:50 +0900 (JST) Received: from m108.s.css.fujitsu.com (m108.s.css.fujitsu.com [10.249.87.108]) by s3.gw.fujitsu.co.jp (Postfix) with ESMTP id 14A291DB803E for ; Thu, 26 Aug 2010 13:35:50 +0900 (JST) Date: Thu, 26 Aug 2010 13:30:28 +0900 From: KAMEZAWA Hiroyuki Subject: Re: [PATCH/RFCv4 0/6] The Contiguous Memory Allocator framework Message-Id: <20100826133028.39d731da.kamezawa.hiroyu@jp.fujitsu.com> In-Reply-To: References: <1282310110.2605.976.camel@laptop> <20100825155814.25c783c7.akpm@linux-foundation.org> <20100826095857.5b821d7f.kamezawa.hiroyu@jp.fujitsu.com> <20100826115017.04f6f707.kamezawa.hiroyu@jp.fujitsu.com> <20100826124434.6089630d.kamezawa.hiroyu@jp.fujitsu.com> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org To: Minchan Kim Cc: =?UTF-8?B?TWljaGHFgg==?= Nazarewicz , Andrew Morton , Hans Verkuil , Daniel Walker , Russell King , Jonathan Corbet , Peter Zijlstra , Pawel Osciak , Konrad Rzeszutek Wilk , linux-kernel@vger.kernel.org, FUJITA Tomonori , linux-mm@kvack.org, Kyungmin Park , Zach Pfeffer , Mark Brown , Mel Gorman , linux-media@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Marek Szyprowski List-ID: On Thu, 26 Aug 2010 13:06:28 +0900 Minchan Kim wrote: > On Thu, Aug 26, 2010 at 12:44 PM, KAMEZAWA Hiroyuki > wrote: > > On Thu, 26 Aug 2010 11:50:17 +0900 > > KAMEZAWA Hiroyuki wrote: > > > >> 128MB...too big ? But it's depend on config. > >> > >> IBM's ppc guys used 16MB section, and recently, a new interface to shrink > >> the number of /sys files are added, maybe usable. > >> > >> Something good with this approach will be you can create "cma" memory > >> before installing driver. > >> > >> But yes, complicated and need some works. > >> > > Ah, I need to clarify what I want to say. > > > > With compaction, it's helpful, but you can't get contiguous memory larger > > than MAX_ORDER, I think. To get memory larger than MAX_ORDER on demand, > > memory hot-plug code has almost all necessary things. > > True. Doesn't patch's idea of Christoph helps this ? > http://lwn.net/Articles/200699/ > yes, I think so. But, IIRC, it's own purpose of Chirstoph's work is for removing zones. please be careful what's really necessary. Thanks, -Kame -- 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