On Wed, May 08, 2024 at 11:39:49AM +0000, Pankaj Raghav (Samsung) wrote: > At the moment, we can get a reference to the huge zero folio only through > the mm interface. > > Even if change the lower level interface to return THP, it can still fail > at the mount time and we will need the fallback right? Well, that's why I suggest doing it at mount time. Asking for it deep down in the write code is certainly going to be a bit problematic.