From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753828AbYIZIlS (ORCPT ); Fri, 26 Sep 2008 04:41:18 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753060AbYIZIlH (ORCPT ); Fri, 26 Sep 2008 04:41:07 -0400 Received: from e28smtp02.in.ibm.com ([59.145.155.2]:40669 "EHLO e28esmtp02.in.ibm.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1751843AbYIZIlE (ORCPT ); Fri, 26 Sep 2008 04:41:04 -0400 Message-ID: <48DCA01C.9020701@linux.vnet.ibm.com> Date: Fri, 26 Sep 2008 14:11:00 +0530 From: Balbir Singh Reply-To: balbir@linux.vnet.ibm.com Organization: IBM User-Agent: Thunderbird 2.0.0.16 (X11/20080725) MIME-Version: 1.0 To: KAMEZAWA Hiroyuki CC: "linux-mm@kvack.org" , "nishimura@mxp.nes.nec.co.jp" , "xemul@openvz.org" , Andrew Morton , LKML , Dave Hansen , ryov@valinux.co.jp Subject: Re: [PATCH 3/12] memcg make root cgroup unlimited. References: <20080925151124.25898d22.kamezawa.hiroyu@jp.fujitsu.com> <20080925151543.ba307898.kamezawa.hiroyu@jp.fujitsu.com> In-Reply-To: <20080925151543.ba307898.kamezawa.hiroyu@jp.fujitsu.com> Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org KAMEZAWA Hiroyuki wrote: > Make root cgroup of memory resource controller to have no limit. > > By this, users cannot set limit to root group. This is for making root cgroup > as a kind of trash-can. > > For accounting pages which has no owner, which are created by force_empty, > we need some cgroup with no_limit. A patch for rewriting force_empty will > will follow this one. > > Signed-off-by: KAMEZAWA Hiroyuki This is an ABI change (although not too many people might be using it, I wonder if we should add memory.features (a set of flags and let users enable them and provide good defaults), like sched features. -- Balbir