ufs_wapbl_rename

[David Holland <dholland-tech%netbsd.org@localhost>]

New patch for wapbl_ufs_rename:

   http://www.eecs.harvard.edu/~dholland/tmp/netbsd/rename-candidate.diff

this is smaller and less directly intrusive than the old patch set,
but it has the same problem:

ufs_direnter: reached 4.2-only block, not supposed to happen
panic: kernel diagnostic assertion "vp->v_size == ip->i_size" failed: file 
"../../../../ufs/ufs/ufs_lookup.c", line 1460

It applies on top of two other relatively harmless patches relating to
ufs_lookup_results that I'm going to commit once an anita run
finishes. On the minus side, it seems that being more careful with
that stuff isn't (by itself at least) making this problem go away...

Note that it doesn't patch the non-wapbl rename, so be sure to mount
with -olog if trying it.

-- 
David A. Holland
dholland%netbsd.org@localhost