[Cooker] initrd question

[Magnus Holmberg]

I try to make a initrd with mkinitrd /boot/initrd.img 2.2.15-2mdk

And I get: No module reiserfs found for kernel 2.2.15-2mkd ?

Why do I need to have resierfs in the initrd ????
(I have reiserfs in the kernel so this thing is stupid)

/M