a take at cache coherency

[Csaba Henk]

On 2006-01-23, Simon 'corecode' Schubert <corecode at xxxxxxxxxxxx> wrote:
> + renames on the lower layer don't trigger namecache 
> renames/invalidations on a higher layer.  this is what the coherency 
> should be about, i think.

OK, it took some time, but now I got your point. You are damn right.
While invalidations do take effect in the higher layer as well (at
least, in nullfs), renames don't. It's easy to set up a scenario where
the upper layer goes async with a rename done in the lower one.

Csaba