BHASH2
bmwrite(dev, BHASH2, bp->hash_table_mask[1]); /* bits 31 - 16 */
bmwrite(dev, BHASH2, bp->hash_table_mask[1]); /* bits 31 - 16 */
bmwrite(dev, BHASH2, 0xffff);
bmwrite(dev, BHASH2, hash_table[2]);