On Thu, Apr 05, 2018 at 05:05:47PM +0200, Michal Hocko wrote: > On Thu 05-04-18 16:40:45, Kirill A. Shutemov wrote: > > On Thu, Apr 05, 2018 at 02:48:30PM +0200, Michal Hocko wrote: > [...] > > > RIght, I confused the two. What is the proper layer to fix that then? > > > rmap_walk_file? > > > > Maybe something like this? Totally untested. > > This looks way too complex. Why cannot we simply split THP page cache > during migration?
This way we unify the codepath for archictures that don't support THP migration and shmem THP. -- Kirill A. Shutemov
