ok1(tdb->map_size >= val + 1 * TDB_EXTENSION_FACTOR);
ok1(tdb_unlock_hashes(tdb, 0, 1, F_WRLCK) == 0);
ok1(tdb_check(tdb, NULL, NULL) == 0);
val = tdb->map_size;
ok1(tdb_lock_hashes(tdb, 0, 1, F_WRLCK, TDB_LOCK_WAIT) == 0);
ok1(tdb->map_size >= val + 1 * TDB_EXTENSION_FACTOR);
ok1(tdb_unlock_hashes(tdb, 0, 1, F_WRLCK) == 0);
ok1(tdb_check(tdb, NULL, NULL) == 0);
val = tdb->map_size;
ok1(tdb_lock_hashes(tdb, 0, 1, F_WRLCK, TDB_LOCK_WAIT) == 0);