Re: [PATCH v4] mm: move pgscan, pgsteal, pgrefill to node stats
From: Andrew Morton
Date: Thu Feb 19 2026 - 17:11:30 EST
On Thu, 19 Feb 2026 09:11:24 -0800 "JP Kobryn (Meta)" <jp.kobryn@xxxxxxxxx> wrote:
> There are situations where reclaim kicks in on a system with free memory.
> One possible cause is a NUMA imbalance scenario where one or more nodes are
> under pressure. It would help if we could easily identify such nodes.
>
> Move the pgscan, pgsteal, and pgrefill counters from vm_event_item to
> node_stat_item to provide per-node reclaim visibility. With these counters
> as node stats, the values are now displayed in the per-node section of
> /proc/zoneinfo, which allows for quick identification of the affected
> nodes.
This runs afoul of
https://lkml.kernel.org/r/20260123150108.43443-2-wujianyue000@xxxxxxxxx.
Please redo against mm.git's mm-new branch?