Re: [PATCH v2 1/1] waitid: Add support for waiting for the current process group

[Oleg Nesterov]

On 08/14, Christian Brauner wrote:
>
> +static struct pid *find_get_pgrp(pid_t nr)
> +{
> +	struct pid *pid;
> +
> +	if (nr)
> +		return find_get_pid(nr);
> +
> +	rcu_read_lock();
> +	pid = get_pid(task_pgrp(current));
> +	rcu_read_unlock();
> +
> +	return pid;
> +}

I can't say I like this helper... even its name doesn't look good to me.

I forgot that we already have get_task_pid() when I replied to the previous
version... How about

	case P_PGID:

		if (upid)
			pid = find_get_pid(upid);
		else
			pid = get_task_pid(current, PIDTYPE_PGID);

?

Oleg.