m.mu.Lock()
	defer m.mu.Unlock()
	for bucket, b := range m.buckets {
		b.deleteAll()
		delete(m.buckets, bucket)
	}
}

// checkMetacacheState should be used if data is not updating.
// Should only be called if a failure occurred.
func (o listPathOptions) checkMetacacheState(ctx context.Context, rpc *peerRESTClient) error {
	// We operate on a copy...
	o.Create = false
	c, err := rpc.GetMetacacheListing(ctx, o)