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mediatek: mt7622: enable CONFIG_MTD_VIRT_CONCAT

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Some devices have a ton of unused space found in other partitions that
can be used to expand rootfs_data.

In particular, the D-Link DIR-X3260 device can squeeze another ~24MiB
from its backup partition, with a few tricks, allowing for ~48MiB of
usable space rather than ~24MiB by itself.

As of v25.12.1, with the official release build config, this gives us
~35MiB of rootfs_data, where without it there would only be ~11MiB.

Enable this config to allow this function.

Signed-off-by: Han Sol Jin <jhs@jinhansol.com>
Link: https://github.com/openwrt/openwrt/pull/22555
Signed-off-by: Jonas Jelonek <jelonek.jonas@gmail.com>
This commit is contained in:
Han Sol Jin 2026-03-20 01:42:30 -07:00 committed by Jonas Jelonek
parent df26b8723a
commit f13150d12f
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target/linux/mediatek/mt7622/config-6.18
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@ -286,6 +286,7 @@ CONFIG_MTD_UBI_BLOCK=y
CONFIG_MTD_UBI_FASTMAP=y CONFIG_MTD_UBI_FASTMAP=y
CONFIG_MTD_UBI_NVMEM=y CONFIG_MTD_UBI_NVMEM=y
CONFIG_MTD_UBI_WL_THRESHOLD=4096 CONFIG_MTD_UBI_WL_THRESHOLD=4096
CONFIG_MTD_VIRT_CONCAT=y
# CONFIG_MTK_CMDQ is not set # CONFIG_MTK_CMDQ is not set
CONFIG_MTK_CPUX_TIMER=y CONFIG_MTK_CPUX_TIMER=y
# CONFIG_MTK_CQDMA is not set # CONFIG_MTK_CQDMA is not set