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Date: Fri, 1 Jul 2005 00:14:39 -0700
From: Andrew Morton <akpm@osdl.org>
To: Miklos Szeredi <miklos@szeredi.hu>
Cc: aia21@cam.ac.uk, arjan@infradead.org, linux-kernel@vger.kernel.org,
       frankvm@frankvm.com
Subject: Re: FUSE merging?
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Miklos Szeredi <miklos@szeredi.hu> wrote:
>
> > >
> > >  > - aren't we going to remove the nfs semi-server feature?
> > > 
> > >  I leave the decision to you ;)  It's a separate independent patch
> > >  already (fuse-nfs-export.patch).
> > 
> > Let's leave it out - that'll stimulate some activity in the
> > userspace-nfs-server-for-FUSE area.
> > 
> > Speaking of which, dumb question: what does FUSE offer over simply using
> > NFS protocol to talk to the userspace filesystem driver?
> 
> Oh lots:
> 
>   - no deadlocks (NFS mounted from localhost is riddled with them)

It is?  We had some low-memory problems a while back, but they got fixed. 
During that work I did some nfs-to-localhost testing and things seemed OK.

>   - efficient protocol, optimized for less context switches

One wouldn't really expect a userspace filesystem to be particularly fast,
and the performance will be dominated by memory copies and IO wait anyway.

>   - dcache invalidation policy

What's that?

>   - probably more, but I can't remember

Please do..