func (dc *DeploymentController) rollbackToTemplate(ctx context.Context, d *apps.Deployment, rs *apps.ReplicaSet) (bool, error) {
	logger := klog.FromContext(ctx)
	performedRollback := false
	if !deploymentutil.EqualIgnoreHash(&d.Spec.Template, &rs.Spec.Template) {
		logger.V(4).Info("Rolling back deployment to old template spec", "deployment", klog.KObj(d), "templateSpec", rs.Spec.Template.Spec)

		controllerRef := metav1.GetControllerOf(pod)
		if controllerRef != nil && rsMap[controllerRef.UID] {
			owned.Items = append(owned.Items, *pod)
		}
	}
	return owned, nil
}

// EqualIgnoreHash returns true if two given podTemplateSpec are equal, ignoring the diff in value of Labels[pod-template-hash]
// We ignore pod-template-hash because:
//  1. The hash result would be different upon podTemplateSpec API changes

		// the status of the Deployment and requeue to try the creation in the next sync.
		controllerRef := metav1.GetControllerOf(rs)
		if controllerRef != nil && controllerRef.UID == d.UID && deploymentutil.EqualIgnoreHash(&d.Spec.Template, &rs.Spec.Template) {
			createdRS = rs
			err = nil
			break
		}

		// Matching ReplicaSet is not equal - increment the collisionCount in the DeploymentStatus

			runTest := func(t1, t2 *v1.PodTemplateSpec, reversed bool) {
				reverseString := ""
				if reversed {
					reverseString = " (reverse order)"
				}
				// Run
				equal := EqualIgnoreHash(t1, t2)
				if equal != test.expected {
					t.Errorf("%q%s: expected %v", test.Name, reverseString, test.expected)
					return
				}
				if t1.Labels == nil || t2.Labels == nil {