blkdev.h

 1/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
 2#ifndef _UAPI_LINUX_BLKDEV_H
 3#define _UAPI_LINUX_BLKDEV_H
 4
 5#include <linux/ioctl.h>
 6#include <linux/types.h>
 7
 8/*
 9 * io_uring block file commands, see IORING_OP_URING_CMD.
10 * It's a different number space from ioctl(), reuse the block's code 0x12.
11 */
12#define BLOCK_URING_CMD_DISCARD			_IO(0x12, 0)
13
14#endif