458 	struct task_struct *reaper = pid_ns->child_reaper;  in find_child_reaper()  local
460 	if (likely(reaper != father))  in find_child_reaper()
461 		return reaper;  in find_child_reaper()
463 	reaper = find_alive_thread(father);  in find_child_reaper()
464 	if (reaper) {  in find_child_reaper()
465 		pid_ns->child_reaper = reaper;  in find_child_reaper()
466 		return reaper;  in find_child_reaper()
490 	struct task_struct *thread, *reaper;  in find_new_reaper()  local
502 		for (reaper = father;  in find_new_reaper()
503 		     !same_thread_group(reaper, child_reaper);  in find_new_reaper()
504 		     reaper = reaper->real_parent) {  in find_new_reaper()
506 			if (reaper == &init_task)  in find_new_reaper()
508 			if (!reaper->signal->is_child_subreaper)  in find_new_reaper()
510 			thread = find_alive_thread(reaper);  in find_new_reaper()
554 	struct task_struct *p, *t, *reaper;  in forget_original_parent()  local
560 	reaper = find_child_reaper(father);  in forget_original_parent()
564 	reaper = find_new_reaper(father, reaper);  in forget_original_parent()
567 			t->real_parent = reaper;  in forget_original_parent()
579 		if (!same_thread_group(reaper, father))  in forget_original_parent()
582 	list_splice_tail_init(&father->children, &reaper->children);  in forget_original_parent()