RE: [Yaffs] obvious fault or deliberate

> -----Original Message-----
> From: Jon Masters [mailto:jcm@apogee.jonmasters.org]
> Sent: 01 September 2006 01:52 AM
> To: Charles Manning
> Cc: Johann Kok (JP); yaffs@lists.aleph1.co.uk
> Subject: RE: [Yaffs] obvious fault or deliberate
>
> On Fri, 2006-09-01 at 09:27 +1200, Charles Manning wrote:
> > >
> > > This is a too obvious fault so I'm wondering if its deliberate:
> > >
> > > The structure 'yaffs_ExtendedTags' has 16 unsigned fields
> > > (64bytes) and 2 enum fields (eccResult & extraObjectType).
> > > On a 32bit processor this comes down to a total of 72 bytes
> > > while all the tag/spare bytes must fit into a 64byte space.
> >
> > Extended tags are not written to NAND, they are packed into
> a suitable
> > structure for writing to NAND.(see yaffs_PackedTags2 and friends)
>
> Indeed. This is pretty cool because it affords you greater
flexibility
> when you want to hack up the on-device representation and not
> affect how
> YAFFS stores the meta-data internally for a mounted
> filesystem. In fact,
> I've had to hack at this a number of times in the past.
> Useful stuff :-)
>
> Jon.

Hi ,
I withdraw my previous remark about the sizeof() problem - it turns
out that just a normal make didn't notice just a header file change.

Regards
Johann Kok

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