kern/156545: [ufs] mv could break UFS on SMP systems

[kib at FreeBSD.org]

Synopsis: [ufs] mv could break UFS on SMP systems

State-Changed-From-To: open->patched
State-Changed-By: kib
State-Changed-When: Sun Apr 24 11:11:10 UTC 2011
State-Changed-Why: 
HEAD contained fix for the problem, that was commited together with
large +J patch.

I extracted the lone ufs_rename() rework and merged it into stable/8.
Lets see how it works.

http://www.freebsd.org/cgi/query-pr.cgi?pr=156545