memory_bm_test_bit
memory_bm_test_bit(free_pages_map, page_to_pfn(page)) : 0;
memory_bm_test_bit(forbidden_pages_map, page_to_pfn(page)) : 0;
if (memory_bm_test_bit(zero_bm, buf[j]))
memory_bm_test_bit(&zero_bm, memory_bm_get_current(&orig_bm))) {