From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail203.messagelabs.com (mail203.messagelabs.com [216.82.254.243]) by kanga.kvack.org (Postfix) with ESMTP id 2E3426B004A for ; Thu, 30 Jun 2011 21:37:20 -0400 (EDT) Received: from m2.gw.fujitsu.co.jp (unknown [10.0.50.72]) by fgwmail6.fujitsu.co.jp (Postfix) with ESMTP id 55E293EE0C0 for ; Fri, 1 Jul 2011 10:37:16 +0900 (JST) Received: from smail (m2 [127.0.0.1]) by outgoing.m2.gw.fujitsu.co.jp (Postfix) with ESMTP id 30FCE45DE81 for ; Fri, 1 Jul 2011 10:37:16 +0900 (JST) Received: from s2.gw.fujitsu.co.jp (s2.gw.fujitsu.co.jp [10.0.50.92]) by m2.gw.fujitsu.co.jp (Postfix) with ESMTP id 1708D45DE7A for ; Fri, 1 Jul 2011 10:37:16 +0900 (JST) Received: from s2.gw.fujitsu.co.jp (localhost.localdomain [127.0.0.1]) by s2.gw.fujitsu.co.jp (Postfix) with ESMTP id 066011DB803F for ; Fri, 1 Jul 2011 10:37:16 +0900 (JST) Received: from m106.s.css.fujitsu.com (m106.s.css.fujitsu.com [10.240.81.146]) by s2.gw.fujitsu.co.jp (Postfix) with ESMTP id BC17A1DB8038 for ; Fri, 1 Jul 2011 10:37:15 +0900 (JST) Date: Fri, 1 Jul 2011 10:30:07 +0900 From: KAMEZAWA Hiroyuki Subject: Re: [PATCH] [Cleanup] memcg: export memory cgroup's swappiness v2 Message-Id: <20110701103007.8110f130.kamezawa.hiroyu@jp.fujitsu.com> In-Reply-To: <20110701101624.a10b7e34.kamezawa.hiroyu@jp.fujitsu.com> References: <20110629190325.28aa2dc6.kamezawa.hiroyu@jp.fujitsu.com> <20110630130134.63a1dd37.akpm@linux-foundation.org> <20110701085013.4e8cbb02.kamezawa.hiroyu@jp.fujitsu.com> <20110701092059.be4400f7.kamezawa.hiroyu@jp.fujitsu.com> <20110630180653.1df10f38.akpm@linux-foundation.org> <20110701101624.a10b7e34.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 List-ID: To: KAMEZAWA Hiroyuki Cc: Andrew Morton , "linux-mm@kvack.org" , "linux-kernel@vger.kernel.org" , "nishimura@mxp.nes.nec.co.jp" , "bsingharora@gmail.com" , Michal Hocko , Ying Han , Shaohua Li , KOSAKI Motohiro On Fri, 1 Jul 2011 10:16:24 +0900 KAMEZAWA Hiroyuki wrote: > On Thu, 30 Jun 2011 18:06:53 -0700 > Andrew Morton wrote: > > > On Fri, 1 Jul 2011 09:20:59 +0900 KAMEZAWA Hiroyuki wrote: > > > > > On Fri, 1 Jul 2011 08:50:13 +0900 > > > KAMEZAWA Hiroyuki wrote: > > > > > > > On Thu, 30 Jun 2011 13:01:34 -0700 > > > > Andrew Morton wrote: > > > > > > > Ok, I'll check it. Maybe I miss !CONFIG_SWAP... > > > > > > > > > > v4 here. Thank you for pointing out. I could think of several ways but > > > maybe this one is good because using vm_swappines with !CONFIG_SWAP seems > > > to be a bug. > > > > No, it isn't a bug - swappiness also controls the kernel's eagerness to > > unmap and reclaim mmapped pagecache. > > > > Oh, really ? I didn't understand that. > Hmm, anyway, this new version of fix seems better. ==