From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail202.messagelabs.com (mail202.messagelabs.com [216.82.254.227]) by kanga.kvack.org (Postfix) with ESMTP id 48B6D6B01F1 for ; Thu, 26 Aug 2010 06:06:11 -0400 (EDT) Subject: Re: [PATCH/RFCv4 0/6] The Contiguous Memory Allocator framework From: Peter Zijlstra In-Reply-To: References: <1282310110.2605.976.camel@laptop> <20100825155814.25c783c7.akpm@linux-foundation.org> <20100825173125.0855a6b0@bike.lwn.net> <1282810811.1975.246.camel@laptop> Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Date: Thu, 26 Aug 2010 12:06:00 +0200 Message-ID: <1282817160.1975.476.camel@laptop> Mime-Version: 1.0 Sender: owner-linux-mm@kvack.org To: Minchan Kim Cc: Jonathan Corbet , Andrew Morton , Michal Nazarewicz , linux-mm@kvack.org, Daniel Walker , FUJITA Tomonori , Hans Verkuil , Konrad Rzeszutek Wilk , Kyungmin Park , Marek Szyprowski , Mark Brown , Pawel Osciak , Russell King , Zach Pfeffer , linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-media@vger.kernel.org, Mel Gorman List-ID: On Thu, 2010-08-26 at 18:29 +0900, Minchan Kim wrote: > As I said following mail, I said about free space problem. > Of course, compaction could move anon pages into somewhere. > What's is somewhere? At last, it's same zone. > It can prevent fragment problem but not size of free space. > So I mean it would be better to move it into another zone(ex, HIGHMEM) > rather than OOM kill.=20 Real machines don't have highmem, highmem sucks!! /me runs Does cross zone movement really matter, I though these crappy devices were mostly used on crappy hardware with very limited memory, so pretty much everything would be in zone_normal.. no? But sure, if there's really a need we can look at maybe doing cross zone movement. -- 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