linux-kernel - Re: [PATCH 1/3] cgroups: Add an API to attach a task to current task's cgroup

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Message-ID: <20100527091629.GB6308@redhat.com>
Date:	Thu, 27 May 2010 12:16:29 +0300
From:	"Michael S. Tsirkin" <mst@...hat.com>
To:	Paul Menage <menage@...gle.com>
Cc:	Sridhar Samudrala <samudrala.sridhar@...il.com>,
	netdev <netdev@...r.kernel.org>,
	"kvm@...r.kernel.org" <kvm@...r.kernel.org>,
	lkml <linux-kernel@...r.kernel.org>,
	containers@...ts.linux-foundation.org, lizf@...fujitsu.com,
	Andrew Morton <akpm@...ux-foundation.org>,
	Ben Blum <bblum@...rew.cmu.edu>,
	KAMEZAWA Hiroyuki <kamezawa.hioryu@...fujitsu.com>
Subject: Re: [PATCH 1/3] cgroups: Add an API to attach a task to current
	task's cgroup

On Tue, May 25, 2010 at 11:34:12AM -0700, Paul Menage wrote:
> On Tue, May 25, 2010 at 9:53 AM, Michael S. Tsirkin <mst@...hat.com> wrote:
> > On Thu, May 20, 2010 at 03:22:15PM -0700, Paul Menage wrote:
> >> On Tue, May 18, 2010 at 5:04 PM, Sridhar Samudrala
> >> <samudrala.sridhar@...il.com> wrote:
> >> > Add a new kernel API to attach a task to current task's cgroup
> >> > in all the active hierarchies.
> >> >
> >> > Signed-off-by: Sridhar Samudrala <sri@...ibm.com>
> >>
> >> Reviewed-by: Paul Menage <menage@...gle.com>
> >>
> >> It would be more efficient to just attach directly to current->cgroups
> >> rather than potentially creating/destroying one css_set for each
> >> hierarchy until we've completely converged on current->cgroups - but
> >> that would require a bunch of refactoring of the guts of
> >> cgroup_attach_task() to ensure that the right can_attach()/attach()
> >> callbacks are made. That doesn't really seem worthwhile right now for
> >> the initial use, that I imagine isn't going to be
> >> performance-sensitive.
> >>
> >> Paul
> >
> > Is this patch suitable for 2.6.35?
> 
> Should be OK, yes.
> 
> Paul

So I'll add your Acked-by tag then, and merge through the vhost tree
together with the patch that uses this.

-- 
MST
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