XFS filesystem on MPC8548 based board

I am running XFS filesystem on my self-built MPC8548 based(a NAS box),
kernel version is 2.6.31.6. I have encountered a very very odd problem
which has been unsoled untill now, see
this:http://oss.sgi.com/archives/xfs/2009-12/msg00073.html
I wonder if anybody on this list had experience to use XFS on PPC
platform(especially on MPC85XX based board), what is your kernel
version?

-- 
The simplest is not all best but the best is surely the simplest!