On Mon 01-04-19 09:59:36, Oscar Salvador wrote: > On Fri, Mar 29, 2019 at 02:42:43PM +0100, Michal Hocko wrote: > > Having a larger contiguous area is definitely nice to have but you also > > have to consider the other side of the thing. If we have a movable > > memblock with unmovable memory then we are breaking the movable > > property. So there should be some flexibility for caller to tell whether > > to allocate on per device or per memblock. Or we need something to move > > memmaps during the hotremove. > > By movable memblock you mean a memblock whose pages can be migrated over when > this memblock is offlined, right? I am mostly thinking about movable_node kernel parameter which makes newly hotpluged memory go into ZONE_MOVABLE and people do use that to make sure such a memory can be later hotremoved. -- Michal Hocko SUSE Labs
