Re: [RFC v2 0/3] mm/mglru: proactive aging via memory.aging

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From: Johannes Weiner

Date: Wed Jul 15 2026 - 10:01:12 EST

On Tue, Jul 14, 2026 at 08:15:26PM +0800, Zicheng Wang wrote:
> MGLRU inverts the reclaim order when anonymous memory is faulted in
> bulk: anonymous pages sit in the young generations while file pages
> sit in the oldest two, so reclaim evicts hot file pages before cold
> anonymous pages.

An aging inversion in the reclaim algorithm seems like an exceedingly
poor justification for a userspace interface to work around them.