heap_link_page
heap_link_page(page, &area->free_pages);
heap_link_page(page, &bin->page_list);
heap_link_page(&page[i], &area->free_pages);
heap_link_page(page, &area->free_pages);
heap_link_page(page, &bin->page_list);
heap_link_page(&page[i], &area->free_pages);