From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail138.messagelabs.com (mail138.messagelabs.com [216.82.249.35]) by kanga.kvack.org (Postfix) with SMTP id 9BF896B01E3 for ; Tue, 13 Apr 2010 10:05:21 -0400 (EDT) Date: Tue, 13 Apr 2010 16:03:30 +0200 From: Andrea Arcangeli Subject: Re: [PATCH 00 of 41] Transparent Hugepage Support #17 Message-ID: <20100413140330.GR5583@random.random> References: <20100412082844.GU5683@laptop> <4BC2E1D6.9040702@redhat.com> <20100412092615.GY5683@laptop> <4BC2EFBA.5080404@redhat.com> <20100412203829.871f1dee.akpm@linux-foundation.org> <20100413161802.498336ca@notabene.brown> <20100413133153.GO5583@random.random> <20100413134035.GY25756@csn.ul.ie> <20100413134456.GQ5583@random.random> <20100413135543.GA25756@csn.ul.ie> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20100413135543.GA25756@csn.ul.ie> Sender: owner-linux-mm@kvack.org To: Mel Gorman Cc: Neil Brown , Andrew Morton , Avi Kivity , Nick Piggin , Ingo Molnar , Mike Galbraith , Jason Garrett-Glaser , Linus Torvalds , Pekka Enberg , linux-mm@kvack.org, Marcelo Tosatti , Adam Litke , Izik Eidus , Hugh Dickins , Rik van Riel , Dave Hansen , Benjamin Herrenschmidt , Mike Travis , KAMEZAWA Hiroyuki , Christoph Lameter , Chris Wright , bpicco@redhat.com, KOSAKI Motohiro , Balbir Singh , Arnd Bergmann , "Michael S. Tsirkin" , Peter Zijlstra , Johannes Weiner , Daisuke Nishimura List-ID: On Tue, Apr 13, 2010 at 02:55:43PM +0100, Mel Gorman wrote: > That already happens. Yep as shown by /proc/pagetypeinfo. > True. Christoph made a few stabs at being able to slab targetted reclaim > (called defragmentation, but it was about reclaim) but it was never completed > and merged. Even if it was merged, the slab reclaimable objects would > still be kept in their own 2M pageblocks though. I guess it's not easy and more expensive to reclaim in use object, I didn't see the targetted reclaim patches. So it sounds ok if they stay in their own pageblocks separated from the movable pageblocks, even if they become fully reclaimable. -- 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