From owner-cvs-all  Sun Sep 19 18: 7:30 1999
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Date: Sun, 19 Sep 1999 18:04:07 -0700 (PDT)
From: Julian Elischer <julian@whistle.com>
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To: Peter Wemm <peter@netplex.com.au>
Cc: mjacob@feral.com, Poul-Henning Kamp <phk@critter.freebsd.dk>,
	Matthew Dillon <dillon@apollo.backplane.com>, dg@root.com,
	Greg Lehey <grog@lemis.com>, cvs-committers@FreeBSD.org,
	cvs-all@FreeBSD.org
Subject: Re: User block device access (was: cvs commit: src/sys/miscfs/specfs
 spec_vnops.c src/sys/sys vnode.h src/sys/kern vfs_subr.c) 
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On Mon, 20 Sep 1999, Peter Wemm wrote:

> Matthew Jacob wrote:
> > 
> > 
> > > In message <Pine.BSF.4.05.9909191318570.42254-100000@semuta.feral.com>, Mat
>     thew
> > >  Jacob writes:
> > > 
> > > >> Anyway, David (and Kirk through him) has already said their piece, and
> > > >> still nobody has named an actual application which depends on bdevs 
> > > >> soo...
> > > >
> > > >Isn't that reasoning in reverse? Wouldn't be fairer to state "the problems
> > > >that we have in the rest of the system are so large because we allow block
> > > >device access to user programs that we must kill off such access?".
> > > 
> > > In an ideal world yes.  I think the fully expanded version sounds like
> > > this: 
> > > 
> > >    "
> > > 	Since having two kinds of access to the device confuses people
> > > 	used to Linux
> > 
> > So to market differentiate FreeBSD from Linux (which is block device only,
> > finally thinking about adding raw) we go for raw-only? :-)
> 
> .. and Linux has an implementation of both now.

but they don't do it with a whole separate class of devices as far as I
know.

> 
> Cheers,
> -Peter
> 
> 
> 



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