> If it wasn't for the readonly issue, I'd say store the counts in the file
> system ala /etc/dumpdates.  If fsck must be run in the absence of any
> read/write filesystems, it does seem like the superblock is the only feasible
> place to store the timestamp/count data.

While I agree in principle that the only feasible place to store the
timestamp/count data is the superblock, there is a problem with this, if we
plan to generalize the concept of fsck to other filesystems.

E.g., I've got a preliminary version of a fsck-like utility for msdosfs
(written by Martin Husemann and myself). Since we cannot define any field in
the msdosfs for our own purposes, we have to find a different solution for this
filesystem, should we want to support clean bits there.
--
ws@TooLs.DE     (Wolfgang Solfrank, TooLs GmbH) 	+49-228-985800