On Fri, 13 Oct 2023 14:48:20 +0800 Yunsheng Lin wrote:

v5 RFC: Add a new page_pool_cache_alloc() API, and other minor
        change as discussed in v4. As there seems to be three
        comsumers that might be made use of the new API, so
        repost it as RFC and CC the relevant authors to see
        if the new API fits their need.

I have looked thru the v4 discussion (admittedly it was pretty huge).
I can't find where the "cache" API was suggested.
And I can't figure out now what the "cache" in the name is referring to.
Looks like these are just convenience wrappers which return VA instead
of struct page..