On Fri, Mar 22, 2024 at 11:19:34AM +0100, Vlastimil Babka wrote: > Should we add metadata wrt closing the bug report from Luis? > > https://lore.kernel.org/all/8fa1c95c-4749-33dd-42ba-243e492ab109@xxxxxxx/ Probably a good idea. > I assume this wouldn't be fun wrt stable... I don't think it should be too bad? I think we only need to backport it as far as v6.6 when I got rid of folio->dtor. Yes, it's unreliable before that, but it doesn't cause crashes, just bad decisions. > > Since hugetlb pages do not use individual page mapcounts (they are always > > fully mapped and use the entire_mapcount field to record the number > > Wasn't there some discussions to allow partial mappings of hugetlb? What > would be the implications? I think I'm hammering another nail into that coffin. As I understand it, everyone has given up on that proposal and they're looking to make THP more reliable so they can use THP. See Yu Zhao's recent proposals.
