clean reverse_path_check_proc() a bit (d16312a4) · Commits · github.com / kvm-riscv / linux

fs/eventpoll.c

+9 −17

Original line number	Diff line number	Diff line
		@@ -1317,23 +1317,15 @@ static int reverse_path_check_proc(struct file *file, int depth)
		/* CTL_DEL can remove links here, but that can't increase our count */
		rcu_read_lock();
		list_for_each_entry_rcu(epi, &file->f_ep_links, fllink) {
		struct file *child_file = epi->ep->file;
		if (is_file_epoll(child_file)) {
		if (list_empty(&child_file->f_ep_links)) {
		if (path_count_inc(depth)) {
		error = -1;
		break;
		}
		} else {
		error = reverse_path_check_proc(child_file,
		depth + 1);
		}
		struct file *recepient = epi->ep->file;
		if (WARN_ON(!is_file_epoll(recepient)))
		continue;
		if (list_empty(&recepient->f_ep_links))
		error = path_count_inc(depth);
		else
		error = reverse_path_check_proc(recepient, depth + 1);
		if (error != 0)
		break;
		} else {
		printk(KERN_ERR "reverse_path_check_proc: "
		"file is not an ep!\n");
		}
		}
		rcu_read_unlock();
		return error;