From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756720Ab2JRWsN (ORCPT ); Thu, 18 Oct 2012 18:48:13 -0400 Received: from mail-pb0-f46.google.com ([209.85.160.46]:47909 "EHLO mail-pb0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750724Ab2JRWsL (ORCPT ); Thu, 18 Oct 2012 18:48:11 -0400 Date: Thu, 18 Oct 2012 15:48:07 -0700 From: Tejun Heo To: Michal Hocko Cc: linux-mm@kvack.org, cgroups@vger.kernel.org, linux-kernel@vger.kernel.org, Li Zefan , Johannes Weiner , KAMEZAWA Hiroyuki , Balbir Singh Subject: Re: [PATCH 5/6] memcg: make mem_cgroup_reparent_charges non failing Message-ID: <20121018224807.GT13370@google.com> References: <1350480648-10905-1-git-send-email-mhocko@suse.cz> <1350480648-10905-6-git-send-email-mhocko@suse.cz> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1350480648-10905-6-git-send-email-mhocko@suse.cz> User-Agent: Mutt/1.5.20 (2009-06-14) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Oct 17, 2012 at 03:30:47PM +0200, Michal Hocko wrote: > Now that pre_destroy callbacks are called from within cgroup_lock and > the cgroup has been checked to be empty without any children then there > is no other way to fail. > mem_cgroup_pre_destroy doesn't have to take a reference to memcg's css > because all css' are marked dead already. > > Signed-off-by: Michal Hocko Reviewed-by: Tejun Heo Thanks. -- tejun