From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753138AbcGUPEH (ORCPT ); Thu, 21 Jul 2016 11:04:07 -0400 Received: from mail-pa0-f65.google.com ([209.85.220.65]:33043 "EHLO mail-pa0-f65.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752863AbcGUPEE (ORCPT ); Thu, 21 Jul 2016 11:04:04 -0400 Date: Thu, 21 Jul 2016 11:04:01 -0400 From: Tejun Heo To: Aleksa Sarai Cc: James Bottomley , "Serge E. Hallyn" , Greg Kroah-Hartman , Li Zefan , Johannes Weiner , "Serge E. Hallyn" , Aditya Kali , Chris Wilson , linux-kernel@vger.kernel.org, cgroups@vger.kernel.org, Christian Brauner , dev@opencontainers.org Subject: Re: [PATCH v1 3/3] cgroup: relax common ancestor restriction for direct descendants Message-ID: <20160721150401.GE22680@htj.duckdns.org> References: <20160720155147.GG4574@htj.duckdns.org> <6e975d80-4077-fb8b-ec84-708e37c8e149@suse.de> <20160720230228.GA19588@mtj.duckdns.org> <982fcf3a-3685-9bd7-dd95-7bff255c9421@suse.de> <20160720231949.GB19588@mtj.duckdns.org> <379e5b13-29d4-ca75-1935-0a64f3db8d27@suse.de> <20160721143330.GA5751@mail.hallyn.com> <1469112709.2331.11.camel@HansenPartnership.com> <20160721145905.GC22680@htj.duckdns.org> <4bc13b20-9e8f-f43c-27aa-df5ec981762e@suse.de> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <4bc13b20-9e8f-f43c-27aa-df5ec981762e@suse.de> User-Agent: Mutt/1.6.2 (2016-07-01) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello, Aleksa. On Fri, Jul 22, 2016 at 01:07:13AM +1000, Aleksa Sarai wrote: > > Coordinate in userspace. Request whatever is managing the cgroup > > hierarchy to set up delegation. It's not like permission model is > > fully contained in kernel on modern systems anyway. > > My experience with certain systemdaemons' cgroup handling doesn't inspire > confidence :/ (from the runC side, we've had nothing but issues). Also, how Fix it then. Working around bugs in userland isn't a justifiable rationale for adding new kernel features. > do you even boot into a cgroupv2 system with systemd (I started backporting > patches to openSUSE, but it's still not booting)? With devel branch, just passing in the unified hierarchy boot param seems to work fine here. Thanks. -- tejun