1// SPDX-License-Identifier: GPL-2.0
 2#include <linux/kernel.h>
 3#include <linux/errno.h>
 4#include <linux/fs.h>
 5#include <linux/file.h>
 6#include <linux/io_uring.h>
 7
 8#include <uapi/linux/io_uring.h>
 9
10#include "io_uring.h"
11#include "nop.h"
12
13int io_nop_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe)
14{
15	if (READ_ONCE(sqe->rw_flags))
16		return -EINVAL;
17	return 0;
18}
19
20/*
21 * IORING_OP_NOP just posts a completion event, nothing else.
22 */
23int io_nop(struct io_kiocb *req, unsigned int issue_flags)
24{
25	io_req_set_res(req, 0, 0);
26	return IOU_OK;
27}