swap space for a memory based filesystem

[nmahajan%hss.hns.com@localhost]

Hi,

We have a system which boots using memory based file system,
i.e we have a ramdisk having some file system mounted on it and parameters
for it passed via kernel options file ..
but I couldnt find any option / way to define swap partition and space for
same ..
could some one please tell me how to declare and allocate space for swap
for it ?
I couldnt find any  relavant option in swapctl and swapon ..  ?

Regards,
Nitin

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