From: Ezequiel Garcia Date: Sun, 1 Aug 2021 23:45:08 +0000 (-0300) Subject: mtdblock: Add comment about UBI block devices X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=42ba8c3b426342b39341e1b7a97f2387821bff86;p=linux.git mtdblock: Add comment about UBI block devices 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 Signed-off-by: Miquel Raynal Link: https://lore.kernel.org/linux-mtd/20210801234509.18774-7-ezequiel@collabora.com --- diff --git a/drivers/mtd/Kconfig b/drivers/mtd/Kconfig index 3a1f87def25b5..796a2eccbef0b 100644 --- a/drivers/mtd/Kconfig +++ b/drivers/mtd/Kconfig @@ -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