On Tue 16-04-19 07:30:20, Dave Hansen wrote: > On 4/16/19 12:47 AM, Michal Hocko wrote: > > You definitely have to follow policy. You cannot demote to a node which > > is outside of the cpuset/mempolicy because you are breaking contract > > expected by the userspace. That implies doing a rmap walk. > > What *is* the contract with userspace, anyway? :) > > Obviously, the preferred policy doesn't have any strict contract. > > The strict binding has a bit more of a contract, but it doesn't prevent > swapping. Yes, but swapping is not a problem for using binding for memory partitioning. > Strict binding also doesn't keep another app from moving the > memory. I would consider that a bug. -- Michal Hocko SUSE Labs
