On Sat, 29 Nov 2003 00:24:31 EST, John Zielinski <grim@undead.cc>  said:

> +	  This option switches rootfs so that it uses tmpfs rather than ramfs
> +	  for it's file storage.  This makes rootfs swappable so having a large
> +	  initrd or initramfs image won't eat up valuable RAM.

I'm missing something - why not use an initrd and pivot_root and then
unmount the old root?  Seems to work here.