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//usr/include/linux/blkdev.h
/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ #ifndef _LINUX_BLKDEV_H #define _LINUX_BLKDEV_H #include <linux/ioctl.h> #include <linux/types.h> /* * io_uring block file commands, see IORING_OP_URING_CMD. * It's a different number space from ioctl(), reuse the block's code 0x12. */ #define BLOCK_URING_CMD_DISCARD _IO(0x12, 0) #endif
