Re: [PATCH 2/3] futex_find_get_task: don't take tasklist_lock

[Ingo Molnar]

* Oleg Nesterov <oleg@xxxxxxxxxx> wrote:

> It is ok to do find_task_by_pid() + get_task_struct() under 
> rcu_read_lock(), we cand drop tasklist_lock.
> 
> Note that testing of ->exit_state is racy with or without tasklist 
> anyway.
> 
> Signed-off-by: Oleg Nesterov <oleg@xxxxxxxxxx>

yeah. (We did this in the -rt tree for some time too, never saw any 
problems.)

Acked-by: Ingo Molnar <mingo@xxxxxxx>

	Ingo
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