[obsolete] mm-vmscan-fix-pgdemote_-accounting-with-lru_gen_enabled.patch removed from -mm tree

[obsolete] mm-vmscan-fix-pgdemote_-accounting-with-lru_gen_enabled.patch removed from -mm tree

[Andrew Morton]

The quilt patch titled
     Subject: mm/vmscan: fix pgdemote_* accounting with lru_gen_enabled
has been removed from the -mm tree.  Its filename was
     mm-vmscan-fix-pgdemote_-accounting-with-lru_gen_enabled.patch

This patch was dropped because it is obsolete

------------------------------------------------------
From: Li Zhijian <lizhijian@fujitsu.com>
Subject: mm/vmscan: fix pgdemote_* accounting with lru_gen_enabled
Date: Fri, 10 Jan 2025 20:21:33 +0800

Commit f77f0c751478 ("mm,memcg: provide per-cgroup counters for NUMA
balancing operations") moved the accounting of PGDEMOTE_* statistics to
shrink_inactive_list().  However, shrink_inactive_list() is not called
when lrugen_enabled is true, leading to incorrect demotion statistics
despite actual demotion events occurring.

Add the PGDEMOTE_* accounting in evict_folios(), ensuring that demotion
statistics are correctly updated regardless of the lru_gen_enabled state. 
This fix is crucial for systems that rely on accurate NUMA balancing
metrics for performance tuning and resource management.

Link: https://lkml.kernel.org/r/20250110122133.423481-2-lizhijian@fujitsu.com
Fixes: f77f0c751478 ("mm,memcg: provide per-cgroup counters for NUMA balancing operations")
Signed-off-by: Li Zhijian <lizhijian@fujitsu.com>
Cc: Kaiyang Zhao <kaiyang2@cs.cmu.edu>
Cc: Yu Zhao <yuzhao@google.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 mm/vmscan.c |    2 ++
 1 file changed, 2 insertions(+)

--- a/mm/vmscan.c~mm-vmscan-fix-pgdemote_-accounting-with-lru_gen_enabled
+++ a/mm/vmscan.c
@@ -4650,6 +4650,8 @@ retry:
 	__mod_lruvec_state(lruvec, PGDEMOTE_KSWAPD + reclaimer_offset(),
 					stat.nr_demoted);
 
+	__mod_lruvec_state(lruvec, PGDEMOTE_KSWAPD + reclaimer_offset(),
+			   stat.nr_demoted);
 	item = PGSTEAL_KSWAPD + reclaimer_offset();
 	if (!cgroup_reclaim(sc))
 		__count_vm_events(item, reclaimed);
_

Patches currently in -mm which might be from lizhijian@fujitsu.com are

mm-vmscan-accumulate-nr_demoted-for-accurate-demotion-statistics.patch
mm-vmscan-accumulate-nr_demoted-for-accurate-demotion-statistics-v2.patch