Proof of concept patch for device rearrangement

[Maxime Henrion]

walt wrote:
> Poul-Henning Kamp wrote:
> 
> >I have uploaded a proof of concept patch:
> >
> >	http://phk.freebsd.dk/patch/fd_dev.patch
> 
> 
> >...And with this code enabled, it is possible to go from userland to
> >device driver without touching Giant underway.
> 
> I'm sorry, I can't parse that last sentence.  Could you explain in
> 25 words or less (or 3 lines of code) what it means?
> 
> 'Giant' is the lock that Alan is trying to get rid of?

Giant is the big lock that protects the whole kernel that everyone is
trying to get rid of :-).

Maxime