There is an error in my original mail.  I meant to say read only.  So that
it is impossible to write to the page.

On 9 Dec 1999, Charles M. Hannum wrote:

> Date: 09 Dec 1999 17:04:56 -0500
> From: Charles M. Hannum <root@ihack.net>
> To: Jeff Roberson <nomad@nop.aliensystems.com>
> Cc: tech-kern@netbsd.org
> Subject: Re: mmap and anonymous memory.
> 
> 
> Jeff Roberson <nomad@nop.aliensystems.com> writes:
> 
> > If I mmap an area of anonymous memory and set the protection bits to
> > write only will it be associated with any physical memory?  I assume it
> > isn't filled until there is a page fault, which shouldn't fill it anyway
> > because it's write only.  Are these assumptions correct?