I have upgraded to 4.16:
# pacman -S uboot-odroid-c2-mainline
# pacman -S linux-aarch64
The system boots normally, and I am able to ssh into it. However the root partition is mounted as read-only.
# mount
...
/dev/mmcblk0p1 on / type ext4 (ro,relatime,data=ordered)
...
Any suggestions on how to fix this please? Thanks.