> > Quick q: I'm tounge tied and can't remember the term used 
> > to describe 
> > the behavior of a VM which doesn't swap mmap'd files into "usual" 
> > swap, but simply discards the page and reloads it from the actual 
> > mmap'd file.
> 
> Um...don't all VM's do this? It would be the easiest way to 
> do mmap. (Otherwise, if someone tries to read or write that 
> page of the file using "regular" I/O calls, the system would 
> have to know that it needs to pull that page from the swap 
> rather than from the file itself. Keeping the extra copy is 
> harder, not easier!)

Yes - all VM's I know do this.  I was explaining it to somebody, and
completely forgot the term used to decribe (name) it, that's all.

-Jon