unsigned int size_to_bucket(tdb_len_t data_len);
tdb_off_t bucket_off(tdb_off_t flist_off, unsigned bucket);
+/* Used by tdb_summary */
+size_t dead_space(struct tdb_context *tdb, tdb_off_t off);
+
/* io.c: */
/* Initialize tdb->methods. */
void tdb_io_init(struct tdb_context *tdb);