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1/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */2#ifndef _UAPI_LINUX_BLKDEV_H3#define _UAPI_LINUX_BLKDEV_H4 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#endif15