Re: [PATCH] mm: mempolicy: fix automatic numa balancing for shmem

[Huang, Ying]

Gregory Price <gourry@xxxxxxxxxx> writes:

[snip]

> Demotions don't care about mempolicy, so opting shmem out of NUMA
> balancing and mbind'ing on a tiered system is just full sadness.
>
> This is all just more evidence that demotion needs to be completely
> redone, it's creating a mess of undefined behavior for memory placement.

It's hard to respect mempolicy during demotion in the current
implementation.  Do you have any ideas on how to improve this?

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Best Regards,
Huang, Ying