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

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Message-ID: <4FBA4E52.8090807@nod.at>
Date:	Mon, 21 May 2012 16:16:50 +0200
From:	Richard Weinberger <richard@....at>
To:	dedekind1@...il.com
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 21.05.2012 16:00, Artem Bityutskiy wrote:
> 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.

Okay, done. :)

>>>    	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.

I use already ubi_io_read_vid_hdr() and ubi_io_read_ec_hdr() what should 
I reuse?
Also checking the image sequence would make sense.

Thanks,
//richard
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