From: Ezequiel Garcia <ezequiel@collabora.com>
To: linux-mtd@lists.infradead.org, linux-kernel@vger.kernel.org,
Richard Weinberger <richard@nod.at>
Cc: Miquel Raynal <miquel.raynal@bootlin.com>,
Vignesh Raghavendra <vigneshr@ti.com>,
Ezequiel Garcia <ezequiel@collabora.com>
Subject: [PATCH 2/3] mtdblock: Add comment about UBI block devices
Date: Sun, 1 Aug 2021 20:45:04 -0300 [thread overview]
Message-ID: <20210801234509.18774-3-ezequiel@collabora.com> (raw)
In-Reply-To: <20210801234509.18774-1-ezequiel@collabora.com>
There is a surprisingly large number of tutorials
that suggest using mtdblock to mount SquashFS filesystems
on flash devices, including NAND devices.
Given this approach is suboptimal than using UBI, and given
the UBI block device layer was introduced many years ago
specifically with this use case in mind, add a small
comment inviting users and developers to consider UBI block.
Signed-off-by: Ezequiel Garcia <ezequiel@collabora.com>
---
drivers/mtd/Kconfig | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/mtd/Kconfig b/drivers/mtd/Kconfig
index 32bed6c63863..91cdbbd44317 100644
--- a/drivers/mtd/Kconfig
+++ b/drivers/mtd/Kconfig
@@ -151,6 +151,9 @@ config MTD_BLOCK_RO
You do not need this option for use with the DiskOnChip devices. For
those, enable NFTL support (CONFIG_NFTL) instead.
+comment "Note that in some cases UBI block is preferred. See MTD_UBI_BLOCK."
+ depends on MTD_BLOCK || MTD_BLOCK_RO
+
config FTL
tristate "FTL (Flash Translation Layer) support"
depends on BLOCK
--
2.32.0
next prev parent reply other threads:[~2021-08-01 23:45 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-08-01 23:45 [PATCH 0/3] mtdblock: Advertise about UBI and UBI block Ezequiel Garcia
2021-08-01 23:45 ` [PATCH 1/3] mtdblock: Update old JFFS2 mention in Kconfig Ezequiel Garcia
2021-08-01 23:45 ` Ezequiel Garcia [this message]
2021-08-01 23:45 ` [PATCH 3/3] mtdblock: Warn if the added for a NAND device Ezequiel Garcia
2021-08-01 23:45 ` [PATCH 0/3] mtdblock: Advertise about UBI and UBI block Ezequiel Garcia
2021-08-01 23:45 ` [PATCH 1/3] mtdblock: Update old JFFS2 mention in Kconfig Ezequiel Garcia
2021-08-06 20:05 ` Miquel Raynal
2021-08-01 23:45 ` [PATCH 2/3] mtdblock: Add comment about UBI block devices Ezequiel Garcia
2021-08-06 20:05 ` Miquel Raynal
2021-08-01 23:45 ` [PATCH 3/3] mtdblock: Warn if the added for a NAND device Ezequiel Garcia
2021-08-06 20:05 ` Miquel Raynal
2021-08-17 16:27 ` Ezequiel Garcia
2021-08-17 16:49 ` Miquel Raynal
2021-10-26 15:03 ` [PATCH 0/3] mtdblock: Advertise about UBI and UBI block Trevor Woerner
2021-10-26 19:01 ` Richard Weinberger
2021-10-28 13:31 ` Trevor Woerner
2021-11-09 10:55 ` Miquel Raynal
2021-11-09 11:45 ` Daniel Golle
2021-11-12 13:54 ` Ezequiel Garcia
2022-01-20 9:39 ` Miquel Raynal
2022-01-20 10:26 ` Ezequiel Garcia
2022-01-20 11:22 ` Miquel Raynal
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