>>>>> "dM" == der Mouse <mouse@Rodents.Montreal.QC.CA> writes:

dM> I have a question about vnodes and uniqueness: is it an error to have
dM> two distinct vnodes that refer to the same entity?

It certainly is for things like union mounts and unionfs.  Is my old
ancient PR on that one still open (you can get different vnodes for
process cwd and a lookup of ".", depending on what's in the cache, if
you use two different UIDs) Ah yes, kern/1677.  Haven't dared try it
recently (since the big vnode layering locking changes Bill Studenmund
did a while ago).

-- 
==John Kohl <jtk@kolvir.arlington.ma.us>, <john_kohl@alum.mit.edu>
Home page: <http://john.kohl.home.attbi.com/>