From mboxrd@z Thu Jan 1 00:00:00 1970 From: Balbir Singh Subject: Re: [PATCH 4/7] bio-cgroup: Split the cgroup memory subsystem into two parts Date: Tue, 19 Aug 2008 09:31:24 +0530 Message-ID: <48AA4594.1000908@linux.vnet.ibm.com> References: <20080812.213449.104039151.ryov@valinux.co.jp> <20080812.213533.189720227.ryov@valinux.co.jp> <20080818103938.8b4e8bfa.kamezawa.hiroyu@jp.fujitsu.com> <20080819.122811.59660409.ryov@valinux.co.jp> Reply-To: balbir@linux.vnet.ibm.com Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <20080819.122811.59660409.ryov@valinux.co.jp> Sender: linux-kernel-owner@vger.kernel.org To: Ryo Tsuruta Cc: kamezawa.hiroyu@jp.fujitsu.com, xen-devel@lists.xensource.com, containers@lists.linux-foundation.org, linux-kernel@vger.kernel.org, virtualization@lists.linux-foundation.org, dm-devel@redhat.com, agk@sourceware.org, xemul@openvz.org, fernando@oss.ntt.co.jp List-Id: dm-devel.ids Ryo Tsuruta wrote: > Hi Kamezawa-san, > >> I'm now writing remove-lock-page-cgroup patches. it works well. >> please wait for a while... > > I'm looking forward to those patches. > > By the way, I'm glad if memory-cgroup has a feature which can make a > page_cgroup move between cgroups with small overhead. It makes > bio-cgroup improve the accuracy of tracking down pages. Page movement can be a very expensive operation and is proportional to the size of the control group. I think movement should be an optional feature, if we ever add it. -- Balbir