linux-kernel - Re: [RFC][PATCH] sched: Fix race in task

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Message-ID: <1340378107.18025.79.camel@twins>
Date:	Fri, 22 Jun 2012 17:15:07 +0200
From:	Peter Zijlstra <peterz@...radead.org>
To:	Stefan Bader <stefan.bader@...onical.com>
Cc:	mingo@...nel.org, Oleg Nesterov <oleg@...hat.com>,
	Paul Turner <pjt@...gle.com>, Mike Galbraith <efault@....de>,
	Andrew Vagin <avagin@...nvz.org>,
	linux-kernel <linux-kernel@...r.kernel.org>,
	Tejun Heo <tj@...nel.org>
Subject: Re: [RFC][PATCH] sched: Fix race in task_group()

On Fri, 2012-06-22 at 17:06 +0200, Stefan Bader wrote:
> > @@ -7595,6 +7597,11 @@ void sched_move_task(struct task_struct *tsk)
> >       if (unlikely(running))
> >               tsk->sched_class->put_prev_task(rq, tsk);
> >  
> > +     tg = container_of(task_subsys_state(p, cpu_cgroup_subsys_id),
> s/p/tsk/
> > +                       struct task_group, css);
> > +     tg = autogroup_task_group(p, tg);
> s/p/tsk/
> > +     tsk->sched_task_group = tg;
> > + 

Hmm, I'm very sure I at least compiled a kernel after this.. must've
been the wrong machine.. /me dons a brown paper bag.
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