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mtdblock: Add comment about UBI block devices

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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>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20210801234509.18774-7-ezequiel@collabora.com
This commit is contained in:
Ezequiel Garcia 2021-08-01 20:45:08 -03:00 committed by Miquel Raynal
parent 6bc219b7b2
commit 42ba8c3b42
1 changed files with 3 additions and 0 deletions
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drivers/mtd/Kconfig
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@ -69,6 +69,9 @@ 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