From mboxrd@z Thu Jan 1 00:00:00 1970 From: Matt Helsley Subject: Re: [RFC] Transactional CGroup task attachment Date: Fri, 11 Jul 2008 19:03:36 -0700 Message-ID: <1215828216.5456.409.camel@localhost.localdomain> References: <6599ad830807092346j1fdb2ef9l2ca2b52e2e68096a@mail.gmail.com> <1215821034.5456.357.camel@localhost.localdomain> <6599ad830807111718ye005349yaa31e729c233474f@mail.gmail.com> <1215823694.5456.382.camel@localhost.localdomain> <6599ad830807111849q7aaf8226tba15193fa23f9531@mail.gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <6599ad830807111849q7aaf8226tba15193fa23f9531-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: containers-bounces-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org Errors-To: containers-bounces-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org To: Paul Menage Cc: Daisuke Miyakawa =?UTF-8?Q?=28=E5=AE=AE=E5=B7=9D_=E5=A4=A7=E8=BC=94=29?= , Peter Zijlstra , Linux Containers , "balbir-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org" , Pavel Emelianov List-Id: containers.vger.kernel.org On Fri, 2008-07-11 at 18:49 -0700, Paul Menage wrote: > On Fri, Jul 11, 2008 at 5:48 PM, Matt Helsley wrote: > > > > I can't see a better way to support that goal and it doesn't seem > > overly ambitious to me. Just needs a somewhat specific test > > configuration for new subsystem patches to detect the deadlock issue. > > Right - but all non-trivial development should be done with lockdep > enabled anyway. > > Paul True, though I don't think it's as simple as just enabling lockdep. My understanding is you won't be able to determine if locks could ever be taken out of order unless all of the cgroup systems are enabled and they are all in the same cgroup hierarchy. Cheers, -Matt Helsley