[maemo-developers] jffs2 on mmc?

[From: Ryan Abel]

ed at okerson.com wrote:

>>  I've been looking into booting from the sdcard and was wondering why
>> none of the "how to's" suggest formatting the card with jffs2.  
>> There's
>> lots of debate between using ext2 or ext3, but nothing on using  
>> jffs2.
>> Is there a simple reason for this I'm missing?
>
> JFFS2 is designed to be used on a raw flash device.  SD cards have a
> controller inside that hides the access to the raw flash and deals  
> with
> things like write levelling, that JFFS2 would otherwise have to do in
> software.

Yes, as Ed says, jffs2 would serve no purpose for an SD card. Besides,  
can you imagine how long it would take to process a 16GB card into  
memory every mount? :shudder: