From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758794Ab3GaBvX (ORCPT ); Tue, 30 Jul 2013 21:51:23 -0400 Received: from szxga01-in.huawei.com ([119.145.14.64]:25670 "EHLO szxga01-in.huawei.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751784Ab3GaBvV (ORCPT ); Tue, 30 Jul 2013 21:51:21 -0400 Message-ID: <51F86D69.2030907@huawei.com> Date: Wed, 31 Jul 2013 09:50:33 +0800 From: Li Zefan User-Agent: Mozilla/5.0 (Windows NT 6.1; rv:17.0) Gecko/20130620 Thunderbird/17.0.7 MIME-Version: 1.0 To: Tejun Heo CC: Andrew Morton , Glauber Costa , KAMEZAWA Hiroyuki , Michal Hocko , Johannes Weiner , LKML , Cgroups , Subject: [PATCH v4 0/8] memcg, cgroup: kill css_id Content-Type: text/plain; charset="GB2312" Content-Transfer-Encoding: 7bit X-Originating-IP: [10.135.68.215] X-CFilter-Loop: Reflected Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This patchset converts memcg to use cgroup->id, and then we can remove cgroup css_id. As we've removed memcg's own refcnt, converting memcg to use cgroup->id is very straight-forward. The patchset is based on Tejun's cgroup tree. v4: - make cgroup_from_id() inline and check if cgroup_mutex is held. - add a comment for idr_remove() in cgroup_offline)fn(). v2->v3: - some minor cleanups suggested by Michal. - fixed the call to idr_alloc() in cgroup_init() in the first patch. Li Zefan (8): cgroup: convert cgroup_ida to cgroup_idr cgroup: document how cgroup IDs are assigned cgroup: implement cgroup_from_id() memcg: convert to use cgroup_is_descendant() memcg: convert to use cgroup id memcg: fail to create cgroup if the cgroup id is too big memcg: stop using css id cgroup: kill css_id -- include/linux/cgroup.h | 65 ++++++-------- kernel/cgroup.c | 285 ++++++----------------------------------------------------- mm/memcontrol.c | 68 ++++++++------ 3 files changed, 96 insertions(+), 322 deletions(-)