__first_valid_page   48 mm/page_isolation.c 		page = __first_valid_page(pfn, pageblock_nr_pages);
__first_valid_page   77 mm/page_isolation.c 		page = __first_valid_page(pfn, pageblock_nr_pages);
__first_valid_page  129 mm/page_isolation.c 		page = __first_valid_page(pfn, pageblock_nr_pages);