linux-kernel - [PATCH 0/3] mtdblock: Advertise about UBI and UBI block

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Message-Id: <20210801234509.18774-1-ezequiel@collabora.com>
Date:   Sun,  1 Aug 2021 20:45:02 -0300
From:   Ezequiel Garcia <ezequiel@...labora.com>
To:     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>,
        Ezequiel Garcia <ezequiel@...labora.com>
Subject: [PATCH 0/3] mtdblock: Advertise about UBI and UBI block

Hi Richard, and everyone else:

Browsing the internet for "JFFS2 mtd" results in tutorials, articles
and github.gists0 that point to mtdblock.

In fact, even the MTD wiki mentions that JFFS2
needs mtdblock to mount a rootfs:

  http://www.linux-mtd.infradead.org/faq/jffs2.html

Moreover, I suspect there may be lots of users
that still believe mtdblock is somehow needed to
mount SquashFS.

I've taken a verbose route and added a pr_warn
warning if the devices are NAND. I don't think using
NAND without UBI is too wise, and given the amount
of outdated tutorials I believe some advertising
will help.

These patches are compile-tested only, as I don't
have devices ready to test, but I can undust some
boards and do some experiments if you think it's needed.

Oh, and PS: We also need to update the wiki.

Ezequiel Garcia (3):
  mtdblock: Update old JFFS2 mention in Kconfig
  mtdblock: Add comment about UBI block devices
  mtdblock: Warn if the added for a NAND device

 drivers/mtd/Kconfig       | 10 ++++++----
 drivers/mtd/mtdblock.c    |  4 ++++
 drivers/mtd/mtdblock_ro.c |  4 ++++
 3 files changed, 14 insertions(+), 4 deletions(-)

-- 
2.32.0