for range numIterations {
		if rwm.GetRLock(context.Background(), nil, id, source, Options{Timeout: time.Second}) {
			n := atomic.AddInt32(activity, 1)
			if n < 1 || n >= 10000 {
				panic(fmt.Sprintf("wlock(%d)\n", n))
			}
			for range 100 {
			}
			atomic.AddInt32(activity, -1)
			rwm.RUnlock(context.Background())
		}
	}
	cdone <- true
}

// Borrowed from rwmutex_test.go

	for range numIterations {
		if rwm.GetRLock(context.Background(), "", "", time.Second) {
			n := atomic.AddInt32(activity, 1)
			if n < 1 || n >= 10000 {
				panic(fmt.Sprintf("wlock(%d)\n", n))
			}
			for range 100 {
			}
			atomic.AddInt32(activity, -1)
			rwm.RUnlock()
		}
	}
	cdone <- true
}

// Borrowed from rwmutex_test.go

			w.Header().Set(RetryAfter, "60")

			w.WriteHeader(http.StatusServiceUnavailable)
			w.Write([]byte(http.ErrServerClosed.Error()))
			return
		}

		atomic.AddInt32(&srv.requestCount, 1)
		defer atomic.AddInt32(&srv.requestCount, -1)

		// Handle request using passed handler.
		handler.ServeHTTP(w, r)
	})

	srv.listenerMutex.Lock()
	srv.Handler = wrappedHandler
	srv.listener = listener

			if !ok {
				return
			}
			switch v := oi.(type) {
			case ReplicateObjectInfo:
				p.stats.incQ(v.Bucket, v.Size, v.DeleteMarker, v.OpType)
				atomic.AddInt32(&p.activeMRFWorkers, 1)
				replicateObject(p.ctx, v, p.objLayer)
				atomic.AddInt32(&p.activeMRFWorkers, -1)
				p.stats.decQ(v.Bucket, v.Size, v.DeleteMarker, v.OpType)

			default:

	})
}

func (s *xlStorage) NSScanner(ctx context.Context, cache dataUsageCache, updates chan<- dataUsageEntry, scanMode madmin.HealScanMode, weSleep func() bool) (dataUsageCache, error) {
	atomic.AddInt32(&s.scanning, 1)
	defer atomic.AddInt32(&s.scanning, -1)

	var err error
	stopFn := globalScannerMetrics.log(scannerMetricScanBucketDrive, s.drivePath, cache.Info.Name)
	defer func() {
		res := make(map[string]string)