linux-kernel - Re: [PATCH 3/3] mtdblock: Warn if the added for a NAND device

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Message-Id: <20210806200537.394260-1-miquel.raynal@bootlin.com>
Date:   Fri,  6 Aug 2021 22:05:37 +0200
From:   Miquel Raynal <miquel.raynal@...tlin.com>
To:     Ezequiel Garcia <ezequiel@...labora.com>,
        linux-mtd@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Richard Weinberger <richard@....at>
Cc:     Miquel Raynal <miquel.raynal@...tlin.com>,
        Vignesh Raghavendra <vigneshr@...com>
Subject: Re: [PATCH 3/3] mtdblock: Warn if the added for a NAND device

On Sun, 2021-08-01 at 23:45:09 UTC, Ezequiel Garcia wrote:
> There is a surprisingly large number of tutorials
> that suggest using mtdblock to mount SquashFS filesystems
> on flash devices, including NAND devices.
> 
> This approach is suboptimal than using UBI. If the flash device
> is NAND, this is specially true, due to wear leveling, bit-flips and
> badblocks. In this case UBI is strongly preferred, so be nice to users
> and print a warning suggesting to consider UBI block, if mtdblock
> is added for a NAND device.
> 
> Signed-off-by: Ezequiel Garcia <ezequiel@...labora.com>

Applied to https://git.kernel.org/pub/scm/linux/kernel/git/mtd/linux.git mtd/next, thanks.

Miquel