From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753441Ab2GTSFG (ORCPT ); Fri, 20 Jul 2012 14:05:06 -0400 Received: from mail-pb0-f46.google.com ([209.85.160.46]:45894 "EHLO mail-pb0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752508Ab2GTSFE (ORCPT ); Fri, 20 Jul 2012 14:05:04 -0400 Date: Fri, 20 Jul 2012 11:04:59 -0700 From: Tejun Heo To: Aristeu Rozanski Cc: Hugh Dickins , Aristeu Rozanski , linux-kernel@vger.kernel.org, Li Zefan , Hillf Danton Subject: Re: [PATCH v3 0/3] cgroup: add xattr support Message-ID: <20120720180459.GJ32763@google.com> References: <20120702142925.795007114@napanee.usersys.redhat.com> <20120717204126.GE24336@google.com> <20120718221044.GJ24336@google.com> <20120720175959.GA32741@cathedrallabs.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20120720175959.GA32741@cathedrallabs.org> 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 Hello, Hugh, Aristeu. On Fri, Jul 20, 2012 at 01:59:59PM -0400, Aristeu Rozanski wrote: > hm, not sure that's what Tejun meant. tmpfs uses anonymous memory for the file > contents, so reuse that infrastructure to allocate space for the extended > attributes the same way, instead of using kmem. > > First thing I can think of is to use whole pages for it to prevent further > complexity. Shouldn't make much difference considering the usecases we have > now (systemd and containers), right? Yeah, that's what I meant. The internal fragmentation is ugly but I think that should do for now at least. Thanks. -- tejun