folio_add_anon_rmap_pte
folio_add_anon_rmap_pte(kfolio, kpage, vma, addr, RMAP_NONE);
folio_add_anon_rmap_pte(folio, new, vma,
folio_add_anon_rmap_pte(folio, page, vma, addr, rmap_flags);