linux-kernel - Re: [PATCH] mtdblock: tolerate corrected bit-flips

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Message-ID: <1785377500.357636.1680009710991.JavaMail.zimbra@nod.at>
Date:   Tue, 28 Mar 2023 15:21:50 +0200 (CEST)
From:   Richard Weinberger <richard@....at>
To:     Miquel Raynal <miquel.raynal@...tlin.com>
Cc:     Bang Li <libang.linuxer@...il.com>,
        Vignesh Raghavendra <vigneshr@...com>,
        linux-mtd <linux-mtd@...ts.infradead.org>,
        linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] mtdblock: tolerate corrected bit-flips

Hi!

----- Ursprüngliche Mail -----
> libang.linuxer@...il.com wrote on Thu, 23 Mar 2023 22:03:50 +0800:
> 
>> mtd_read() may return -EUCLEAN in case of corrected bit-flips.This
>> particular condition should not be treated like an error.
> 
> I'm fine with the patch, Richard, are you okay as well?

Hm yes. I see the bug. I think it broke about 10 years ago
by e47f68587b82 ("mtd: check for max_bitflips in mtd_read_oob()").

In the early day I'd expect someone to hit this bug but I guess
on the last 10 years mtdblock had no real users.

Thanks,
//richard