device-mapper: Add dm-bow
dm-bow is a device mapper driver that allows to create a checkpoint on
the volume so that it is possible to restore the state if necessary.
This is needed to protect the ext4 partition during a system upgrade in
case of a power failure.
Originally-by: Paul Lawrence <paullawrence@google.com>
Origin: https://android.googlesource.com/kernel/common/+/refs/heads/android-mainline/drivers/md/dm-bow.c
Signed-off-by: Mateusz Moscicki <m.moscicki2@samsung.com>
Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>
[mszyprow: this is a squashed set of the following patches
from platform/kernel/linux-rpi 'tizen' (
c4f85fdcd893) branch:
device-mapper: Add dm-bow
dm-bow: Fix 5.15 compatibility issue
ported and adapted to Linux v6.6 kernel base]
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Change-Id: Id44a1fece8b1be096689a86bd9ea8356c25db5e0