Issue : jffs2 and ecc layout

[Ming Lei]

Hi Jason,

2010/12/24 Ming Lei <tom.leiming at gmail.com>:
> 2010/12/24 Ming Lei <tom.leiming at gmail.com>:
>> Hi,
>>
>> 2010/12/24 Charles Manning <manningc2 at actrix.gen.nz>:
>>
>>> THis might be due to the way the omap2.c driver is now screwed up so that it
>>> does not read when not u32 aligned.
>>>
>>> Try this:
>>> http://www.spinics.net/linux/lists/linux-omap/msg42422.html
>>>
>>> Please report back if that fixes the problem for you.
>>
>> No, the patch doesn't fix the issue.
>
> #mount -t jffs2 /dev/mtdblock4 /mnt/cf
>
> mount: /dev/mtdblock4: can't read superblock
>
> [   41.216796] nand_do_read_oob: Attempt to read past end of page
> [   41.216827] cannot read OOB for EB at 00000000, requested 152
> bytes, read 0 bytes, error -22

When I revert the patch below from Jason,

       http://marc.info/?l=linux-kernel&m=129015697513966&w=2

mount will be OK but with some info printed, see below:

root at beagleboard:~# mount -t jffs2 /dev/mtdblock4 /mnt/cf
[   39.662963] JFFS2 notice: (1324) jffs2_build_xattr_subsystem:
complete building xattr subsystem, 0
of xdatum (0 unchecked, 0 orphan) and 0 of xref (0 dead, 0 orphan) found.

#mount
......
/dev/mtdblock4 on /media/cf type jffs2 (rw,relatime)

So seems the patch from Jason does cause the issue, maybe should be
dropped or fixed further.

thanks,
-- 
Lei Ming