On Wed, Oct 25, 2023 at 09:34:15PM -0400, Rik van Riel wrote: > On Wed, 2023-10-25 at 16:12 -0400, Gregory Price wrote: > > u |= kpf_copy_bit(k, KPF_SWAPBACKED, PG_swapbacked); > > > > Aren't PG_locked, PG_reclaim, and PG_swapbacked also maintained only on > the folio/head? > > Would it make sense to convert those over as well? > I see them registered as PF_NO_TAIL in include/linux/page-flags.h Certainly i think there are other updates that are likely needed, but I wasn't quite sure how to handle ONLY_HEAD and NO_TAIL and other conditionals. Should the bits always be 0 or should it refer to HEAD? Just not sure at the moment. ~Gregory
