[Devel] Re: [RFC] [PATCH 2/2] cgroups: make procs file writable

[Ben Blum]

On Wed, Jun 02, 2010 at 10:58:55PM +0200, Oleg Nesterov wrote:
> Hmm. The usage of ->thread_group in ->can_attach() methods doesn't
> look safe to me... but currently bool threadgroup is always false.
> 
> Oleg.
> 
> 

I recall putting a rcu_read_lock() around that part and being assured
that made it safe. But I don't remember the details. Maybe taking
tasklist_lock is necessary?

-- Ben
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