linux-kernel - Re: [PATCH V2] mtd: block2mtd: Present block2mtd timely on boot time

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Date:	Fri, 07 Nov 2014 17:30:24 +0200
From:	Artem Bityutskiy <dedekind1@...il.com>
To:	Felix Fietkau <nbd@...nwrt.org>
Cc:	Brian Norris <computersforpeace@...il.com>,
	Rodrigo Freire <rfreire@...hat.com>,
	Jörn Engel <joern@...fs.org>,
	Herton Krzesinski <hkrzesin@...hat.com>,
	linux-kernel@...r.kernel.org, linux-mtd@...ts.infradead.org,
	dwmw2@...radead.org
Subject: Re: [PATCH V2] mtd: block2mtd: Present block2mtd timely on boot time

On Fri, 2014-11-07 at 16:20 +0100, Felix Fietkau wrote:
> > The only usage of this driver is emulating a block device on top of NOR
> > flash, and in most cases, only for debugging / research purposes. This
> > is because (a) this driver does not handle bad blocks (and hence,
> > NAND-incompatible) and (b) it does read-erase-write when you modify a
> > block, so it is extremely slow and does not handle power cuts at all.
> I think you got things mixed up a bit. This is not about emulating a
> block device on top of NOR flash. This is about emulating NOR flash on
> top of a regular block device - e.g. USB sticks, SD cards.

Gosh, I'm sorry, you are right. I did mix things up, please, ignore my
e-mail.

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