Would Matthew Dillon port HAMMER fs to FreeBSD?

[km b]

G'day Matt

On Tue, Sep 30, 2008 at 12:15 PM, Matthew Dillon
<dillon at apollo.backplane.com> wrote:
>
>    They'll have to port it themselves if they want it.
>

Is there a guide/some documentation for porting process (not just to
FreeBSD) but any other BSD OS?
The bare minimum requirements (e.g., VFS interface expected from the
OS in question) and how one should process?

Cheers
kmb810