Messages in this thread | | | Date | Mon, 5 Feb 2024 15:23:16 +0100 | From | Michal Hocko <> | Subject | Re: [RFC PATCH] mm: hugetlb: remove __GFP_THISNODE flag when dissolving the old hugetlb |
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On Mon 05-02-24 21:06:17, Baolin Wang wrote: [...] > > It is quite possible that traditional users (like large DBs) do not use > > CMA heavily so such a problem was not observed so far. That doesn't mean > > those problems do not really matter. > > CMA is just one case, as I mentioned before, other situations can also break > the per-node hugetlb pool now.
Is there any other case than memory hotplug which is arguably different as it is a disruptive operation already.
> Let's focus on the main point, why we should still keep inconsistency > behavior to handle free and in-use hugetlb for alloc_contig_range()? That's > really confused.
yes, this should behave consistently. And the least surprising way to handle that from the user configuration POV is to not move outside of the original NUMA node. -- Michal Hocko SUSE Labs
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