static struct io_poll_iocb *io_poll_get_double(struct io_kiocb *req)
{
	/* pure poll stashes this in ->io, poll driven retry elsewhere */
	if (req->opcode == IORING_OP_POLL_ADD)
		return (struct io_poll_iocb *) req->io;
	return req->apoll->double_poll;
}
static struct io_poll_iocb *io_poll_get_double(struct io_kiocb *req)
{
	 
	if (req->opcode == IORING_OP_POLL_ADD)
		return (struct io_poll_iocb *) req->io;
	return req->apoll->double_poll;
}