From owner-freebsd-hackers@FreeBSD.ORG  Wed Sep 24 17:47:35 2008
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From: Jeff Wheelhouse <freebsd-hackers@wheelhouse.org>
To: John Baldwin <jhb@freebsd.org>
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Subject: Re: Major SMP problems with lstat/namei
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On Sep 24, 2008, at 12:12 PM, John Baldwin wrote:
> Shared lookups only work on the NFS client in 6.x.  I'm about to  
> turn them on
> for UFS in HEAD (8.x) and will backport the needed fixes to 7.x  
> after 7.1
> (too risky to merge to 7.x this close to a release).

Testers available, when you get to that.  :-)

> So lookup_shared=1
> isn't going to really help on 6.x unless you are doing it all over  
> NFS.  You
> also want to backport my fix to cache_enter() before using  
> lookup_shared at
> all:

Since it sounds like 6.x is a dead end, we'll focus on 7.x, provided  
we can get it to be stable for us.

Having never used svn, I do need to figure out how to pull the  
specific  patches you referenced, but I'm sure that's not an  
unclimbable mountain. :-)

I appreciate your insight on this, it's very helpful.

Thanks,
Jeff