static void io_kill_timeout(struct io_kiocb *req)
{
	int ret;

	ret = hrtimer_try_to_cancel(&req->io->timeout.timer);
	if (ret != -1) {
		atomic_inc(&req->ctx->cq_timeouts);
		list_del_init(&req->list);
		io_cqring_fill_event(req, 0);
		io_put_req(req);
	}
}
static void io_kill_timeout(struct io_kiocb *req)
{
	int ret;

	ret = hrtimer_try_to_cancel(&req->io->timeout.timer);
	if (ret != -1) {
		atomic_inc(&req->ctx->cq_timeouts);
		list_del_init(&req->list);
		io_cqring_fill_event(req, 0);
		io_put_req(req);
	}
}