JFFS2 SUMMARY nodes aren't working

[Josh Boyer]

On Fri, 2007-03-23 at 18:24 +0100, Joakim Tjernlund wrote: 
> 
> I found that an all empty FS took about the same time to mount
> which I find very strange.
> 
> Looking into the code in scan.c I found that even though I have
> cleanmarkers in all EB:s, JFFS2 still scans the whole EB. Do
> you really need to scan the whole area after the cleanmarker?
> Should be enough to only check a few words after the clean marker
> and if that is 0xffffffff then assume that the EB is clean
> since it had a valid clean marker at the beginning.

No,  you can't just read a few words.  On some flash, the cleanmarker
cannot be marked invalid in place so you still need to scan the rest of
the block.  Sucks.

josh