Re: [PATCH] use pid_alive in proc_pid_status

[Andrew Morton]

Manfred Spraul <manfred@xxxxxxxxxxxxxxxx> wrote:
>
> +/**
>  + * pid_alive - check that a task structure is not stale
>  + * @p: Task structure to be checked.
>  + *
>  + * Test if a process is not yet dead (at most zombie state)
>  + * If pid_alive fails, then pointers within the task structure
>  + * can be stale and must not be dereferenced.
>  + */
>  +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.

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