From owner-freebsd-hackers@FreeBSD.ORG  Fri Oct  3 21:11:11 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 Oct 1, 2008, at 5:17 PM, John Baldwin wrote:
> It sounds like you missed some of the dirhash changes somehow, as  
> dirhash no
> longer has any lockmgr stuff in it (and only ever did in HEAD).  I've
> generated a patch though using svn.  You can grab it from
> http://www.FreeBSD.org/~jhb/patches/ufs_lookup7.patch  Note that you  
> will
> have to set vfs.lookup_shared=1 to enable shared locks (either  
> loader tunable
> or sysctl).

We lost our test server due to production needs, but should have it  
back tomorrow.  In the mean time, I've downloaded the patch; it  
applied cleanly and I'm building the resulting kernel now.  I'll  
report back once we get the chance to test it.

Thanks,
Jeff