drivers/md/md.c

800 		dev = MKDEV(MD_MAJOR, next_minor);
817 	if (unit && MAJOR(unit) != MD_MAJOR)
834 		if (MAJOR(unit) == MD_MAJOR)
5815 	 * MD_MAJOR or mdp_major.  In this case, if "name" is NULL, then
5841 	partitioned = (MAJOR(mddev->unit) != MD_MAJOR);
5932 	if (MAJOR(dev) == MD_MAJOR && MINOR(dev) >= 512)
5962 		return md_alloc_and_put(MKDEV(MD_MAJOR, devnum), NULL);
6677 			dev = MKDEV(MD_MAJOR, rdev0->preferred_minor);
9901 	ret = __register_blkdev(MD_MAJOR, "md", md_probe);
9917 	unregister_blkdev(MD_MAJOR, "md");
10181 	unregister_blkdev(MD_MAJOR,"md");
10241 MODULE_ALIAS_BLOCKDEV_MAJOR(MD_MAJOR);