BLKROSET          148 include/uapi/linux/fs.h #define BLKROSET   _IO(0x12,93)	/* set device read-only (0 = read-write) */
BLKROSET          148 tools/include/uapi/linux/fs.h #define BLKROSET   _IO(0x12,93)	/* set device read-only (0 = read-write) */