quoted

Indeed, would be a better fit. I didn't know about this one, thanks for
that. It's a shame it can't be used in this context, though. But, at the
end of the day, we're left with nothing regarding buffer occupancy. So
I'm wondering if "something" is not better than "nothing" in this case.
And, for that, we're back to my previous answer on why I agree and
disagree with what you said about its utility.

I think we're on the same page, the main problem is I've not seen
anyone use the skbuff_head_cache occupancy as a signal in practice.

Indeed.

I'm adding a bunch of people to the CC list, hopefully someone has
an opinion one way or the other.

+1, thanks Jakub.

Lore link to the full thread, FWIW:

https://lore.kernel.org/all/20211206211758.19057-1-justin.iurman@uliege.be/ (local)