public void writeRVV(DiskRegion dr, LocalRegion region, Boolean isRVVTrusted) {
    acquireReadLock(dr);
    try {
      if (dr.isRegionClosed()) {
        dr.getCancelCriterion().checkCancelInProgress(null);
        throw new RegionDestroyedException(
            "The DiskRegion has been closed or destroyed",
            dr.getName());
      }

      RegionVersionVector inMemoryRVV = (region == null) ? null : region.getVersionVector();
      // persist the new GC RVV information for this region to the CRF
      PersistentOplogSet oplogSet = getPersistentOplogSet(dr);
      // use current dr.rvvTrust
      oplogSet.getChild().writeRVV(dr, inMemoryRVV, isRVVTrusted);
    } finally {
      releaseReadLock(dr);
    }
  }
Wait for any current operations in the delayed write pool. Completion of this method ensures
that the writes have completed or the pool was shutdown
geode-core/src/main/java/org/apache/geode/internal/cache/DiskStoreImpl.java