linux-2.6.33/__task_pid_nr_ns() の履歴(No.1)

参照元†

struct task_struct *task
- linux-2.6.33/task_struct enum pid_type type
- linux-2.6.33/pid_type struct pid_namespace *ns
- linux-2.6.33/pid_namespace

pid_t __task_pid_nr_ns(struct task_struct *task, enum pid_type type,
			struct pid_namespace *ns)
{
	pid_t nr = 0;

	rcu_read_lock();

	if (!ns)
		ns = current->nsproxy->pid_ns;

	if (likely(pid_alive(task))) {

		if (type != PIDTYPE_PID)
			task = task->group_leader;
		nr = pid_nr_ns(task->pids[type].pid, ns);

	}
	rcu_read_unlock();

	return nr;
}
EXPORT_SYMBOL(__task_pid_nr_ns);