"Policy free" means simply "without policies". A policy free module is one that simply does as it's told, without asking why, or whether it should.
That isn't to say that a policy free module doesn't check for ClientAuthorization[1] for connecting, or for performing particular operations.
| [1] | http://www.linux-ha.org/ClientAuthorization |
This information provided courtesy of the Linux-HA project at http://linux-ha.org/