return class
	}

	return volume.Spec.StorageClassName
}

// GetPersistentVolumeClaimClass returns StorageClassName. If no storage class was
// requested, it returns "".
func GetPersistentVolumeClaimClass(claim *core.PersistentVolumeClaim) string {
	// Use beta annotation first
	if class, found := claim.Annotations[core.BetaStorageClassAnnotation]; found {

		if s := getErrorAsStatus(err); !s.IsSuccess() {
			return nil, s
		}

		pvName := pvc.Spec.VolumeName
		if pvName == "" {
			scName := storagehelpers.GetPersistentVolumeClaimClass(pvc)
			if len(scName) == 0 {
				return nil, framework.NewStatus(framework.UnschedulableAndUnresolvable, "PersistentVolumeClaim had no pv name and storageClass name")
			}

	podVolumeClaims.unboundVolumesDelayBinding = map[string][]*v1.PersistentVolume{}
	for _, pvc := range podVolumeClaims.unboundClaimsDelayBinding {
		// Get storage class name from each PVC
		storageClassName := volume.GetPersistentVolumeClaimClass(pvc)
		podVolumeClaims.unboundVolumesDelayBinding[storageClassName] = b.pvCache.ListPVs(storageClassName)
	}
	return podVolumeClaims, nil
}

func (pl *CSILimits) getCSIDriverInfoFromSC(logger klog.Logger, csiNode *storagev1.CSINode, pvc *v1.PersistentVolumeClaim) (string, string) {
	namespace := pvc.Namespace
	pvcName := pvc.Name
	scName := storagehelpers.GetPersistentVolumeClaimClass(pvc)

	// If StorageClass is not set or not found, then PVC must be using immediate binding mode
	// and hence it must be bound before scheduling. So it is safe to not count it.
	if scName == "" {