I don't know exactly how much will be left to discuss about supporting larger memory allocation units in the page cache by December. In my ideal world, all the patches I've submitted so far are accepted, I persuade every filesystem maintainer to convert their own filesystem and struct page is nothing but a bad memory by December. In reality, I'm just not that persuasive. So, probably some kind of discussion will be worthwhile about converting the remaining filesystems to use folios, when it's worth having filesystems opt-in to multi-page folios, what we can do about buffer-head based filesystems, and so on. Hopefully we aren't still discussing whether folios are a good idea or not by then.