On Fri 28-10-22 07:22:27, Huang, Ying wrote: > Michal Hocko <mhocko@xxxxxxxx> writes: > > > On Thu 27-10-22 17:31:35, Huang, Ying wrote: [...] > >> I think that it's possible for different processes have different > >> requirements. > >> > >> - Some processes don't care about where the memory is placed, prefer > >> local, then fall back to remote if no free space. > >> > >> - Some processes want to avoid cross-socket traffic, bind to nodes of > >> local socket. > >> > >> - Some processes want to avoid to use slow memory, bind to fast memory > >> node only. > > > > Yes, I do understand that. Do you have any specific examples in mind? > > [...] > > Sorry, I don't have specific examples. OK, then let's stop any complicated solution right here then. Let's start simple with a per-mm flag to disable demotion of an address space. Should there ever be a real demand for a more fine grained solution let's go further but I do not think we want a half baked solution without real usecases. -- Michal Hocko SUSE Labs
