linux-kernel - Re: [PATCH 0/9] drivers:mtd:UBI: add bakvol module for MLC NAND paired page issue

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Message-ID: <560E5C51.5000900@nod.at>
Date:	Fri, 2 Oct 2015 12:28:33 +0200
From:	Richard Weinberger <richard@....at>
To:	Bean Huo 霍斌斌 (beanhuo) 
	<beanhuo@...ron.com>, "dedekind1@...il.com" <dedekind1@...il.com>,
	"adrian.hunter@...el.com" <adrian.hunter@...el.com>,
	"computersforpeace@...il.com" <computersforpeace@...il.com>,
	"baruch@...s.co.il" <baruch@...s.co.il>,
	"asierra@...-inc.com" <asierra@...-inc.com>,
	"guz.fnst@...fujitsu.com" <guz.fnst@...fujitsu.com>,
	"gsi@...x.de" <gsi@...x.de>,
	Boris Brezillon <boris.brezillon@...e-electrons.com>
Cc:	David Woodhouse <dwmw2@...radead.org>,
	"linux-mtd@...ts.infradead.org" <linux-mtd@...ts.infradead.org>,
	Frank Liu 刘群 (frankliu) 
	<frankliu@...ron.com>, Andrea Scian <rnd4@...e-tech.it>,
	Karl Zhang 张双锣 (karlzhang) 
	<karlzhang@...ron.com>,
	Iwo Mergler <Iwo.Mergler@...commwireless.com>,
	"Jeff Lauruhn (jlauruhn)" <jlauruhn@...ron.com>,
	Stefan Roese <sr@...x.de>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 0/9] drivers:mtd:UBI: add bakvol module for MLC NAND
 paired page issue

Bean,

Am 30.09.2015 um 08:55 schrieb Richard Weinberger:
>> By the way, Do you review my patches series ? I don't backup duplicated data in OOB .
>> Can you specify which sector codes ? so that I can explain it in detail.
> 
> Okay. Maybe both Boris and I misread your code, can you please explain in detail
> what functions like check_original_data() or mtd_write_dual_plane_oob() do?

Care to explain?
Maybe we can find a solution without OOB.
Boris proposed already some very promising ideas:
http://comments.gmane.org/gmane.linux.drivers.mtd/61658

BTW: Will you be at Embedded Linuxcon Europe in Dublin?
Many MTD guys, including me, will be there.
Maybe we can discuss the problem in a nice pub, first round is on me. :-)

Thanks,
//richard
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