Date: Thu, 19 Jun 2003 01:16:56 +0200 From: Maxime Henrion <mux@freebsd.org> To: walt <wa1ter@myrealbox.com> Cc: freebsd-current@freebsd.org Subject: Re: Proof of concept patch for device rearrangement Message-ID: <20030618231656.GW21011@elvis.mu.org> In-Reply-To: <3EF0DE3A.5040605@myrealbox.com> References: <43720.1055971536@critter.freebsd.dk> <3EF0DE3A.5040605@myrealbox.com>
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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
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