__filemap_add_folio
int __filemap_add_folio(struct address_space *mapping, struct folio *folio,
BTF_ID(func, __filemap_add_folio)
ALLOW_ERROR_INJECTION(__filemap_add_folio, ERRNO);
ret = __filemap_add_folio(mapping, folio, index, gfp, &shadow);
err = __filemap_add_folio(mapping, folio, idx, GFP_KERNEL, NULL);