/* mark the superblock by the MTD device it is using */
static int get_sb_mtd_set(struct super_block *sb, void *_mtd)
/* mark the superblock by the MTD device it is using */
static int get_sb_mtd_set(struct super_block *sb, void *_mtd)
{
	struct mtd_info *mtd = _mtd;
	sb->s_mtd = mtd;
	sb->s_dev = MKDEV(MTD_BLOCK_MAJOR, mtd->index);
	return 0;
}