mm-memcg-add-cache-line-padding-to-mem_cgroup_per_node.patch removed from -mm tree

The quilt patch titled
Subject: mm: memcg: add cache line padding to mem_cgroup_per_node
has been removed from the -mm tree. Its filename was
mm-memcg-add-cache-line-padding-to-mem_cgroup_per_node.patch

This patch was dropped because it was merged into the mm-stable branch of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

------------------------------------------------------
From: Roman Gushchin <[email protected]>
Subject: mm: memcg: add cache line padding to mem_cgroup_per_node
Date: Mon, 1 Jul 2024 18:59:32 +0000

Memcg v1-specific fields serve a buffer function between read-mostly and update often parts of the mem_cgroup_per_node structure. If CONFIG_MEMCG_V1 is not set and these fields are not present, an explicit cacheline padding is needed.

---

 include/linux/memcontrol.h |    6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

@@ -95,14 +95,16 @@ struct mem_cgroup_per_node {
 #ifdef CONFIG_MEMCG_V1
 	/*
 	 * Memcg-v1 only stuff in middle as buffer between read mostly fields
-	 * and update often fields to avoid false sharing. Once v1 stuff is
-	 * moved in a separate struct, an explicit padding is needed.
+	 * and update often fields to avoid false sharing. If v1 stuff is
+	 * not present, an explicit padding is needed.
 	 */
 
 	struct rb_node		tree_node;	/* RB tree node */
 	unsigned long		usage_in_excess;/* Set to the value by which */
 						/* the soft limit is exceeded*/
 	bool			on_tree;
+#else
+	CACHELINE_PADDING(_pad1_);
 #endif
 
 	/* Fields which get updated often at the end. */

_

Patches currently in -mm which might be from [email protected] are