linux-kernel - Re: [PATCH 1/7] [RFC] UBI: Export next

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Message-ID: <1337608854.2483.71.camel@sauron.fi.intel.com>
Date:	Mon, 21 May 2012 17:00:54 +0300
From:	Artem Bityutskiy <dedekind1@...il.com>
To:	Richard Weinberger <richard@....at>
Cc:	linux-mtd@...ts.infradead.org, tglx@...utronix.de,
	linux-kernel@...r.kernel.org, Heinz.Egger@...utronix.de,
	tim.bird@...sony.com
Subject: Re: [PATCH 1/7] [RFC] UBI: Export next_sqnum()

On Mon, 2012-05-21 at 15:34 +0200, Richard Weinberger wrote:
> > +	/* TODO: Before checking version - check the CRC.
> 
> The CRC covers only the fastmap data, not the super block.

Everything should be protected with CRC.

> >   	for (i = 0; i<  nblocks; i++) {
> > +		/* TODO: you basically perform the scanning here - you should
> > +		 * share the same code as we use in scan.c: use process_peb().
> > +		 */
> 
> What exactly do you mean by that?
> process_eb() will not help much because the fastmap data is written 
> "raw" to the flash. (Without any interaction from the WL sub-system)

It still contains EC and VID headers. So you can use the existing code
for scanning it.

-- 
Best Regards,
Artem Bityutskiy

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