Re: [RFC PATCH v4 0/3] memcg weighted interleave mempolicy control

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On Fri 10-11-23 22:42:39, Gregory Price wrote:
[...]
> If I can ask, do you think it would be out of line to propose a major
> refactor to mempolicy to enable external task's the ability to change a
> running task's mempolicy *as well as* a cgroup-wide mempolicy component?

No, I actually think this is a reasonable idea. pidfd_setmempolicy is a
generally useful extension. The mempolicy code is heavily current task
based and there might be some challenges but I believe this will a)
improve the code base and b) allow more usecases.

That being said, I still believe that a cgroup based interface is a much
better choice over a global one. Cpusets seem to be a good fit as the
controller does control memory placement wrt NUMA interfaces.
-- 
Michal Hocko
SUSE Labs




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