static int io_sendmsg_prep_async(struct io_kiocb *req)
{
	int ret;

	if (!io_op_defs[req->opcode].needs_async_data)
		return 0;
	ret = io_sendmsg_copy_hdr(req, req->async_data);
	if (!ret)
		req->flags |= REQ_F_NEED_CLEANUP;
	return ret;
}
static int io_sendmsg_prep_async(struct io_kiocb *req)
{
	int ret;

	if (!io_op_defs[req->opcode].needs_async_data)
		return 0;
	ret = io_sendmsg_copy_hdr(req, req->async_data);
	if (!ret)
		req->flags |= REQ_F_NEED_CLEANUP;
	return ret;
}