Don't know who to ask for review, the change back to `mdmfs` was done in 50e3590c4486925a3694a113f59db7db69eb7679, and the original addition of the `-S` flag was done in 8b1292ac52192757bf4c5141340cdb8e2d78d821.
~~I don't think (or know if) it makes sense to also add back `-i 4096`?~~