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
15