RAMDISK_MAJOR      11 include/linux/major.h #define RAMDISK_MAJOR		1
RAMDISK_MAJOR      10 include/linux/root_dev.h Root_RAM0 = MKDEV(RAMDISK_MAJOR, 0),
RAMDISK_MAJOR      11 include/linux/root_dev.h Root_RAM1 = MKDEV(RAMDISK_MAJOR, 1),