Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751435AbbBKFRL (ORCPT ); Wed, 11 Feb 2015 00:17:11 -0500 Received: from mail-qa0-f46.google.com ([209.85.216.46]:49880 "EHLO mail-qa0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750840AbbBKFRI (ORCPT ); Wed, 11 Feb 2015 00:17:08 -0500 Date: Wed, 11 Feb 2015 00:17:04 -0500 From: Tejun Heo To: "Eric W. Biederman" Cc: "Serge E. Hallyn" , Richard Weinberger , Linux API , Linux Containers , Serge Hallyn , "linux-kernel@vger.kernel.org" , Andy Lutomirski , cgroups mailinglist , Ingo Molnar Subject: Re: [PATCHv3 8/8] cgroup: Add documentation for cgroup namespaces Message-ID: <20150211051704.GB24897@mtj.duckdns.org> References: <20150107224430.GA28414@htj.dyndns.org> <878uhe42km.fsf@x220.int.ebiederm.org> <20150107230615.GA28630@htj.dyndns.org> <87fvbm2nni.fsf@x220.int.ebiederm.org> <87y4peyxw5.fsf@x220.int.ebiederm.org> <20150107233553.GC28630@htj.dyndns.org> <20150211034616.GA25022@mail.hallyn.com> <20150211040957.GC21356@htj.duckdns.org> <20150211042942.GA27931@mail.hallyn.com> <87oap1qbv3.fsf@x220.int.ebiederm.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <87oap1qbv3.fsf@x220.int.ebiederm.org> User-Agent: Mutt/1.5.23 (2014-03-12) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1038 Lines: 27 Hey, On Tue, Feb 10, 2015 at 11:02:40PM -0600, Eric W. Biederman wrote: > A slightly off topic comment, for where this thread has gone but > relevant if we are talking about cgroup namespaces. > > If don't implement compatibility with existing userspace, they get a > nack. A backwards-incompatible change should figure out how to remove > the need for any namespaces. > > Because that is what namespaces are about backwards compatibility. Are you claiming that namespaces are soley about backwards compatibility? ie. to trick userland into scoping without letting it notice? That's a very restricted view and namespaces do provide further isolation capabilties in addition to what can be achieved otherwise and it is logical to collect simliar funtionalities there. Thanks. -- tejun -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/