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SubjectRe: [PATCH v1] mm: consider non-anonymous thp as unmovable page
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

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