+ mm-cleanup-workingset_nodes-in-workingset.patch added to mm-unstable branch

[Andrew Morton <akpm@linux-foundation.org>]

The patch titled
     Subject: mm: cleanup WORKINGSET_NODES in workingset
has been added to the -mm mm-unstable branch.  Its filename is
     mm-cleanup-workingset_nodes-in-workingset.patch

This patch will shortly appear at
     https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-cleanup-workingset_nodes-in-workingset.patch

This patch will later appear in the mm-unstable branch at
    git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

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------------------------------------------------------
From: Shakeel Butt <shakeel.butt@linux.dev>
Subject: mm: cleanup WORKINGSET_NODES in workingset
Date: Wed, 1 May 2024 10:26:15 -0700

WORKINGSET_NODES is not exposed in the memcg stats and thus there is no
need to use the memcg specific stat update functions for it.  In future if
we decide to expose WORKINGSET_NODES in the memcg stats, we can revert
this patch.

Link: https://lkml.kernel.org/r/20240501172617.678560-7-shakeel.butt@linux.dev
Signed-off-by: Shakeel Butt <shakeel.butt@linux.dev>
Reviewed-by: Roman Gushchin <roman.gushchin@linux.dev>
Reviewed-by: T.J. Mercier <tjmercier@google.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Muchun Song <muchun.song@linux.dev>
Cc: Yosry Ahmed <yosryahmed@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 mm/workingset.c |    7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

--- a/mm/workingset.c~mm-cleanup-workingset_nodes-in-workingset
+++ a/mm/workingset.c
@@ -618,6 +618,7 @@ struct list_lru shadow_nodes;
 void workingset_update_node(struct xa_node *node)
 {
 	struct address_space *mapping;
+	struct page *page = virt_to_page(node);
 
 	/*
 	 * Track non-empty nodes that contain only shadow entries;
@@ -633,12 +634,12 @@ void workingset_update_node(struct xa_no
 	if (node->count && node->count == node->nr_values) {
 		if (list_empty(&node->private_list)) {
 			list_lru_add_obj(&shadow_nodes, &node->private_list);
-			__inc_lruvec_kmem_state(node, WORKINGSET_NODES);
+			__inc_node_page_state(page, WORKINGSET_NODES);
 		}
 	} else {
 		if (!list_empty(&node->private_list)) {
 			list_lru_del_obj(&shadow_nodes, &node->private_list);
-			__dec_lruvec_kmem_state(node, WORKINGSET_NODES);
+			__dec_node_page_state(page, WORKINGSET_NODES);
 		}
 	}
 }
@@ -742,7 +743,7 @@ static enum lru_status shadow_lru_isolat
 	}
 
 	list_lru_isolate(lru, item);
-	__dec_lruvec_kmem_state(node, WORKINGSET_NODES);
+	__dec_node_page_state(virt_to_page(node), WORKINGSET_NODES);
 
 	spin_unlock(lru_lock);
 
_

Patches currently in -mm which might be from shakeel.butt@linux.dev are

memcg-simple-cleanup-of-stats-update-functions.patch
memcg-reduce-memory-size-of-mem_cgroup_events_index.patch
memcg-dynamically-allocate-lruvec_stats.patch
memcg-reduce-memory-for-the-lruvec-and-memcg-stats.patch
memcg-cleanup-__mod_memcg_lruvec_state.patch
mm-cleanup-workingset_nodes-in-workingset.patch
memcg-warn-for-unexpected-events-and-stats.patch
memcg-use-proper-type-for-mod_memcg_state.patch