573 	struct task_struct *reaper = pid_ns->child_reaper;  in find_child_reaper()  local
576 	if (likely(reaper != father))  in find_child_reaper()
577 		return reaper;  in find_child_reaper()
579 	reaper = find_alive_thread(father);  in find_child_reaper()
580 	if (reaper) {  in find_child_reaper()
581 		pid_ns->child_reaper = reaper;  in find_child_reaper()
582 		return reaper;  in find_child_reaper()
608 	struct task_struct *thread, *reaper;  in find_new_reaper()  local
624 		for (reaper = father->real_parent;  in find_new_reaper()
625 		     task_pid(reaper)->level == ns_level;  in find_new_reaper()
626 		     reaper = reaper->real_parent) {  in find_new_reaper()
627 			if (reaper == &init_task)  in find_new_reaper()
629 			if (!reaper->signal->is_child_subreaper)  in find_new_reaper()
631 			thread = find_alive_thread(reaper);  in find_new_reaper()
675 	struct task_struct *p, *t, *reaper;  in forget_original_parent()  local
681 	reaper = find_child_reaper(father, dead);  in forget_original_parent()
685 	reaper = find_new_reaper(father, reaper);  in forget_original_parent()
688 			RCU_INIT_POINTER(t->real_parent, reaper);  in forget_original_parent()
701 		if (!same_thread_group(reaper, father))  in forget_original_parent()
704 	list_splice_tail_init(&father->children, &reaper->children);  in forget_original_parent()