Re: [PATCH 1/1] mm/khugepaged: skip copying lazyfree pages on collapse

[Michal Hocko]

On Fri 02-02-24 20:52:48, Lance Yang wrote:
> On Fri, Feb 2, 2024 at 8:27 PM Michal Hocko <mhocko@xxxxxxxx> wrote:
> >
> > On Fri 02-02-24 19:18:31, Lance Yang wrote:
> > > IMO, since it's treated the same as pte_none,
> > > perhaps lazyfree pages shouldn't be copied to
> > > the new huge page.
> >
> > Why? The content of MADV_FREE page is valid until it is reclaimed.
> 
> IMO, if MADV_FREE pages are considered valid until
> reclaimed, treating them the same as pte_none might
> pose a conflict.

What kind of conflict?
-- 
Michal Hocko
SUSE Labs