void tdb_layout_add_free(struct tdb_layout *layout, tdb_len_t len);
void tdb_layout_add_used(struct tdb_layout *layout,
TDB_DATA key, TDB_DATA data,
void tdb_layout_add_free(struct tdb_layout *layout, tdb_len_t len);
void tdb_layout_add_used(struct tdb_layout *layout,
TDB_DATA key, TDB_DATA data,