On Tue, 19 Jul 2016, Xishi Qiu wrote: > Memory offline could happen on both movable zone and non-movable zone, and we > can offline the whole node if the zone is movable_zone(the node only has one > movable_zone), and if the zone is normal_zone, we cannot offline the whole node, > because some kernel memory can't be migrated. > > So how about change alloc_migrate_target() to alloc memory from the next node > with GFP_HIGHUSER_MOVABLE, if the offline zone is movable_zone. > I think sharing alloc_migrate_target as a migration callback may not be worth it; CMA and memory offline are distinct usecases and probably deserve their own callbacks. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>