> On many, perhaps most, systems, it may not be _desirable_ to mount
> /tmp as an MFS, and it's certainly not something that's desirable as
> the default.

Of course. I don't recall proposing to change the default. I do advocate
install-time logic to set up MFS disks, because this is a Cool Feature and
it deserves to be used more.

> I don't know if you're familiar with the 4BSD-derived MFS
> implementations, but:
> 
> Using an MFS will eat a certain amount of swap space, etc.  Eat, not
> 'borrow.'  It's not a SunOS-style mfs that "borrows" space from swap,

I did note this in my original message.

FWIW I consider the Sun implementation to be risky and incorrect. It reminds
me of the infamous AIX malloc() behavior which overcommitted swap and then
flushed unlucky processes.

Todd Whitesel
toddpw @ best.com