I have asked the Manitainer of f2fs-tools about an upgrade from 1.6.1 to
1.7.0 but he cant do it because f2fs-tools 1.7.0 needs libselinux and
that package is only in AUR repo:
https://aur.archlinux.org/packages/libselinux/
I hope im right now here to report this.
greetings
Thomas