jffs2 Erase Block Summary overhead

[David Woodhouse]

On Thu, 2007-02-15 at 16:30 +0100, Matthieu CASTET wrote:
> after doing some test on a 64MB nand flash, we see that only 50 MB can 
> be stored on the filesystem [1]. The extra 10 MB are taken by jffs2 summary.
> If we disable jffs2 sumary in the kernel, the 10MB become available.
> 
> Is there a way to reduce this overhead ?
> 20 % seems really big.

There's a lot of redundant information in the summary; I think we could
halve it fairly easily. I don't believe your 20% figure though -- that's
too high. You really can't rely on the output of df.

-- 
dwmw2