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Date: Wed, 31 Aug 2011 09:03:13 +0200 From: Tejun Heo <tj@...nel.org> To: Frederic Weisbecker <fweisbec@...il.com> Cc: rjw@...k.pl, paul@...lmenage.org, lizf@...fujitsu.com, linux-pm@...ts.linux-foundation.org, linux-kernel@...r.kernel.org, containers@...ts.linux-foundation.org, matthltc@...ibm.com, kamezawa.hiroyu@...fujitsu.com Subject: Re: [PATCH 6/6] cgroup: kill subsys->can_attach_task(), pre_attach() and attach_task() Hello, Frederic. On Tue, Aug 30, 2011 at 10:10:32PM +0200, Frederic Weisbecker wrote: > In order to keep the fix queued in -mm (https://lkml.org/lkml/2011/8/26/262) > the tasks that have failed to migrate should be removed from the iterator > so that they are not included in the batch in ->attach(). I don't think that's a good approach. It breaks the symmetry when calling different callbacks. What if ->can_attach() allocates per-task resources and the task exits in the middle? I think we better lock down fork/exit/exec. I'll send patches but I'm currently moving / traveling w/ limited access to my toys so it might take some time. Thanks. -- tejun -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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