On Fri, Nov 10, 2023 at 11:33:19AM +0800, Kefeng Wang wrote: > Replace nine compound_head() calls with one page_folio(). But that's not all it does. Honestly, when you write these kind of things, I wonder if you understand what you're doing. After this patch, if we report on a tail page, we set (some of) the flags according to how its head page is set. Before, we would have not reported on it at all. This was THE ENTIRE POINT of Greg's patch. And why his patch made sense and yours is nonsense. Andrew, please drop this patch series.
