__get_pfnblock_flags_mask 502 mm/page_alloc.c return __get_pfnblock_flags_mask(page, pfn, end_bitidx, mask); __get_pfnblock_flags_mask 507 mm/page_alloc.c return __get_pfnblock_flags_mask(page, pfn, PB_migrate_end, MIGRATETYPE_MASK);