[PATCH v7 12/13] ext4: switch to multigrain timestamps

[Christian Brauner]

> I wasn't proposing to do that work for v6.6. For that, we absolutely
> either need the mount option or to just revert the mgtime conversions.

This sounds like you want me to do a full-on revert of your series but
why? The conversion and changes support an actual use-case and are fine.
It's a matter of whether we unconditionally expose it to users or not.

@Jan, what do you think?

> My plan was to take a stab at doing this for a later kernel release.

Ok.