MLC Support in JFFS2

apgmoorthy moorthy.apg at
Mon Jun 22 09:33:46 EDT 2009

Hi Artem ,  

On Monday, June 22, 2009 1:18 PM Artem Bityutskiy wrote :
>> Currenlty , Is there a way to use JFFS2 with MLC Memories ?
>> If not , Felt that any one of the following patch can be of use
>> 1.
>>           - Which removes the Clean Marker.
>> 2.
>>           - Leaving 1page/Block , for Clean Marker.
>> or some other solution, which solves the standoff.   
>> Without MLC Support , Flex-OneNAND is unsuable with JFFS2.

>Is JFFS2 usable with Flex-OneNAND by design? I thought it would have to be able to handle paired pages to become MLC-compatible. Does it do that?

Yes it do that .
There are two things in Handling MLCs
1.Paired Page Handling
This is done in Flex-OneNAND Driver.
flexonenand_lsb_page_recovery will handle that in MLC area. 

This scenario has to be dealt in synchronization with JFFS2.
This is what i asked about. 
Pathces , in the links(above)are addressing this.

With Regards

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