dm-crypt + xfs = no quota?

[Joe Schulz <joe@xxxxxxxxxxxxx>]

Hello all,

I have a secure setup here with the root partition mounted on a dm-crypt 
layer. kernel is 2.6.5. Unfortunately when mounting the fs, I always get 
this in the logs: XFS: unknown mount option [quota].
I have back-checked twice, the quota option for xfs is enabled in the 
kernel config. I am suspecting it is something along the lines of this:
http://sourceforge.net/tracker/index.php?func=detail&atid=394667&aid=828570&group_id=28891
but I am not quite sure.
I already updated my quota tools to 3.11, hoping an up-to-date version 
would fix the issue. It doesnt.
Any ideas what I could do to get quota working?

br,
    Joe