On May 31, 2017 3:05:56 PM GMT+03:00, Michal Hocko <mho...@kernel.org> wrote: >On Wed 31-05-17 12:08:45, Mike Rapoport wrote: >> On Tue, May 30, 2017 at 12:39:30PM +0200, Michal Hocko wrote: >[...] >> > Also do you expect somebody else would use new madvise? What would >be the >> > usecase? >> >> I can think of an application that wants to keep 4K pages to save >physical >> memory for certain phase, e.g. until these pages are populated with >very >> few data. After the memory usage increases, the application may wish >to >> stop preventing khugepged from merging these pages, but it does not >have >> strong inclination to force use of huge pages. > >Well, is actually anybody going to do that?
Well, I don't​ know, it's pretty much future telling :) For sure, without the new madvise nobody will be even able to do that.
