Matt Fleming <matt@console-pimps.org> writes:

> I'm currently working on support for journaling in FFS, although I'm
> in no way affiliated with that SoC project.
>
> --mjf

Journaling for FFS is definitely a good thing. It won't, by itself, do
everything needed for NAND flash based file systems.

Because the NAND erase unit is so much larger than the NAND write
block and because of the way bad blocks are managed in NAND hardware,
bad block management and wear leveling are a significant problem that
have to be solved when using a FS on top of NAND.