"Direct" here is more analogous to the Direct as in DirectX and Direct3D.
I find it deeply ironic this needs to be said here.
I will blame whoever named directfs for using a confounding name one way or the other. :V
Point taken. In retrospect, directfs is not a good name as it gives the impression of a new filesystem implemention. I should have named this more along the lines of "direct access mode" as some of you have pointed out.
Thanks for the feedback.