Re: [PATCH] oom: skip frozen tasks

From: Michal Hocko
Date: Fri Aug 26 2011 - 06:48:33 EST


On Fri 26-08-11 14:03:17, Konstantin Khlebnikov wrote:
> Michal Hocko wrote:
>
> >@@ -450,6 +459,10 @@ static int oom_kill_task(struct task_struct *p, struct mem_cgroup *mem)
> > pr_err("Kill process %d (%s) sharing same memory\n",
> > task_pid_nr(q), q->comm);
> > task_unlock(q);
> >+
> >+ if (frozen(q))
> >+ thaw_process(q);
> >+
>
> We must thaw task strictly after sending SIGKILL.

Sounds reasonable.

> But anyway I think this is a bad idea.

Why?

>
> > force_sig(SIGKILL, q);
> > }
> >

--
Michal Hocko
SUSE Labs
SUSE LINUX s.r.o.
Lihovarska 1060/12
190 00 Praha 9
Czech Republic
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