> >>Some naive tests seem to work for me (tmpfs union-over ffs2). Do you
> >>see the problem in fresh -current as well?
> >>
> >
> >Here's an example of a failure that doesn't occur with mfs:
> 
> Don't use a unionfs ... use a union mount!  That's different from  
> unionfs.  unionfs is broken and buggy, and I would never trust it for  
> a production system at this point.  It needs too much work.
> 
> Do a "mount -t tmpfs -o union swap /dev" instead.

Good -- that's what I did in the patch & what I tested.

	Regards,
		-- Jachym Holecek