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Date: Fri, 29 Jun 2012 13:30:33 -0700 (PDT)
From: David Rientjes <rientjes@google.com>
Subject: Re: [rfc][patch 3/3] mm, memcg: introduce own oom handler to iterate
 only over its own threads
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To: Kamezawa Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Andrew Morton <akpm@linux-foundation.org>, Michal Hocko <mhocko@suse.cz>, Johannes Weiner <hannes@cmpxchg.org>, KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>, Minchan Kim <minchan@kernel.org>, Oleg Nesterov <oleg@redhat.com>, linux-mm@kvack.org, cgroups@vger.kernel.org

On Thu, 28 Jun 2012, Kamezawa Hiroyuki wrote:

> > It turns out that task->children is not an rcu-protected list so this
> > doesn't work.
> 
> Can't we use sighand->lock to iterate children ?
> 

I don't think so, this list is protected by tasklist_lock.  Oleg?

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