1set_bit 2clear_bit 3__clear_bit 4__set_bit 5test_and_set_bit 6find_last_bit 7change_bit 8xfs_next_bit 9find_next_bit 10find_first_bit 11__test_and_set_bit 12sync_set_bit 13bitmap_weight 14bitmap_intersects 15bitmap_empty 16