Re: [PATCH] use pid_alive in proc_pid_status

[Ingo Molnar]

* Andrew Morton <akpm@xxxxxxxx> wrote:

> >  +int pid_alive(struct task_struct *p)
> >  +{
> >  +	return p->pids[PIDTYPE_PID].nr != 0;
> >  +}
> 
> Can we not simply test p->exit_state?  That's already done in quite a
> few places and making things consistent would be nice.

as long as it's accessed from under the tasklist_lock, it ought to be
fine to check for p->exit_state != EXIT_DEAD and dereference
p->group_leader afterwards.

	Ingo
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