[debian/fso] 2.6.28-20090105.git69b2aa26 weird jiffs2 messages in dmesg

[arne anka]

> Maybe, but the actual error here is to do with the "format" of the jffs2
> partition.  It can be broken in kernel but I think we would have heard
> about it before, 2.6.28 is "old" now in kernel terms.

well, so the best i can do is backup my data and recreate/reformat the  
jiffs2 fs in flash -- with which parameters exactly?