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)
		deploymentutil.SetFromReplicaSetTemplate(d, rs.Spec.Template)
		// set RS (the old RS we'll rolling back to) annotations back to the deployment;

		if *(rs.Spec.Replicas) != 0 {
			requiredRSs = append(requiredRSs, rs)
		}
	}
	return requiredRSs, allRSs
}

// SetFromReplicaSetTemplate sets the desired PodTemplateSpec from a replica set template to the given deployment.
func SetFromReplicaSetTemplate(deployment *apps.Deployment, template v1.PodTemplateSpec) *apps.Deployment {
	deployment.Spec.Template.ObjectMeta = template.ObjectMeta