linux-kernel - Re: [PATCH 0/4] Container Freezer: Reuse Suspend Freezer

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Date:	Tue, 8 Jul 2008 13:07:09 -0700
From:	"Paul Menage" <menage@...gle.com>
To:	"Matt Helsley" <matthltc@...ibm.com>
Cc:	"KAMEZAWA Hiroyuki" <kamezawa.hiroyu@...fujitsu.com>,
	"Rafael J. Wysocki" <rjw@...k.pl>,
	"Cedric Le Goater" <clg@...ibm.com>,
	"Linux Containers" <containers@...ts.linux-foundation.org>,
	Linux-Kernel <linux-kernel@...r.kernel.org>,
	"Pavel Machek" <pavel@....cz>, linux-pm@...ts.linux-foundation.org
Subject: Re: [PATCH 0/4] Container Freezer: Reuse Suspend Freezer

On Tue, Jul 8, 2008 at 1:06 PM, Paul Menage <menage@...gle.com> wrote:
> On Tue, Jul 8, 2008 at 12:39 PM, Matt Helsley <matthltc@...ibm.com> wrote:
>>
>> One is to try and disallow users from moving frozen tasks. That doesn't
>> seem like a good approach since it would require a new cgroups interface
>> "can_detach()".
>
> Detaching from the old cgroup happens at the same time as attaching to
> the new cgroup, so can_attach() would work here.

And the whole can_attach()/attach() protocol needs reworking anyway,
see my email (hopefully) later today.

Paul
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