- uint64_t new_num_buckets, new_num_zones, new_zone_bits;
- uint64_t old_num_zones, old_size, old_zone_bits;
- tdb_len_t add, needed;
-
- /* We need room for the record header too. */
- needed = sizeof(struct tdb_used_record)
- + adjust_size(klen, dlen, growing);
-
- /* tdb_allrecord_lock will update header; did zones change? */
- old_zone_bits = tdb->header.v.zone_bits;
- old_num_zones = tdb->header.v.num_zones;
-
- /* FIXME: this is overkill. An expand lock? */
- if (tdb_allrecord_lock(tdb, F_WRLCK, TDB_LOCK_WAIT, false) == -1)
- return -1;
-
- /* Someone may have expanded for us. */
- if (old_zone_bits != tdb->header.v.zone_bits
- || old_num_zones != tdb->header.v.num_zones)
- goto success;
-
- /* They may have also expanded the underlying size (otherwise we'd
- * have expanded our mmap to look at those offsets already). */
- old_size = tdb->map_size;
- tdb->methods->oob(tdb, tdb->map_size + 1, true);
- if (tdb->map_size != old_size)
- goto success;
-
- add = expand_to_fill_zones(tdb);
- if (add == TDB_OFF_ERR)
- goto fail;