On Tue, Jun 22, 2021 at 01:15:19PM +0100, Matthew Wilcox (Oracle) wrote: > mem_cgroup_charge() already assumed it was being passed a non-tail > page (and looking at the callers, that's true; it's called for freshly > allocated pages). The only real change here is that folio_nr_pages() > doesn't compile away like thp_nr_pages() does as folio support > is not conditional on transparent hugepage support. Reimplement > mem_cgroup_charge() as a wrapper around folio_charge_cgroup(). Maybe rename __mem_cgroup_charge to __folio_charge_cgroup as well?
