Messages in this thread | | | Date | Tue, 16 Apr 2019 16:39:58 +0200 | From | Michal Hocko <> | Subject | Re: [v2 RFC PATCH 0/9] Another Approach to Use PMEM as NUMA Node |
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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
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