swap space in a file?

[Bruno Wolff III]

On Thu, Dec 14, 2006 at 09:13:24 -0500,
  Tom Horsley <tomhorsley at adelphia.net> wrote:
> > mkswap /swapfile  
> 
> So its easier than I thought! Never knew linux already knew how to use a plain
> file for swap. Learn something every day. Thanks!

In FC5 I had problems with the swap file if it wasn't on the root file system
at boot time. My theory is that swapon was running before the other file
systems were mounted, but I never fully confirmed that that was the problem.