static int io_nop(struct io_kiocb *req, struct io_comp_state *cs)
{
	struct io_ring_ctx *ctx = req->ctx;

	if (unlikely(ctx->flags & IORING_SETUP_IOPOLL))
		return -EINVAL;

	__io_req_complete(req, 0, 0, cs);
	return 0;
}
static int io_nop(struct io_kiocb *req, struct io_comp_state *cs)
{
	struct io_ring_ctx *ctx = req->ctx;

	if (unlikely(ctx->flags & IORING_SETUP_IOPOLL))
		return -EINVAL;

	__io_req_complete(req, 0, 0, cs);
	return 0;
}