[SHR-Unstable] swapon: swapfile has holes

[Greg Bonett]

Hi there,
I just installed SHR unstable and I'm impressed at how usable and
responsive it is.  However, while I was performing a opkg operation I
ran out of memory so I tried to add a swap file. 
When following the instructions at:
http://wiki.openmoko.org/wiki/SHR_User_Manual#SwapSpace
I get the error:
"swapon: /swapfile: Invalid argument"
and dmesg shows:
"swapon: swapfile has holes"

I've tried files on the sd card and also on the internal memory.
Any suggestions?

Thanks.
-Greg