+ mm-page_alloc-add-same-penalty-is-enough-to-get-round-robin-order-v3.patch added to -mm tree

+ mm-page_alloc-add-same-penalty-is-enough-to-get-round-robin-order-v3.patch added to -mm tree

[Andrew Morton]

The patch titled
     Subject: mm-page_alloc-add-same-penalty-is-enough-to-get-round-robin-order-v3
has been added to the -mm tree.  Its filename is
     mm-page_alloc-add-same-penalty-is-enough-to-get-round-robin-order-v3.patch

This patch should soon appear at
    https://ozlabs.org/~akpm/mmots/broken-out/mm-page_alloc-add-same-penalty-is-enough-to-get-round-robin-order-v3.patch
and later at
    https://ozlabs.org/~akpm/mmotm/broken-out/mm-page_alloc-add-same-penalty-is-enough-to-get-round-robin-order-v3.patch

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------------------------------------------------------
From: Wei Yang <richard.weiyang@gmail.com>
Subject: mm-page_alloc-add-same-penalty-is-enough-to-get-round-robin-order-v3

remove remove MAX_NODE_LOAD, per Vlastimil

Link: https://lkml.kernel.org/r/20220412001319.7462-1-richard.weiyang@gmail.com
Signed-off-by: Wei Yang <richard.weiyang@gmail.com>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Acked-by: David Hildenbrand <david@redhat.com>
Acked-by: Oscar Salvador <osalvador@suse.de>
Cc: David Rientjes <rientjes@google.com>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Krupa Ramakrishnan <krupa.ramakrishnan@amd.com>
Cc: Michal Hocko <mhocko@suse.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---


--- a/mm/page_alloc.c~mm-page_alloc-add-same-penalty-is-enough-to-get-round-robin-order-v3
+++ a/mm/page_alloc.c
@@ -6182,7 +6182,6 @@ int numa_zonelist_order_handler(struct c
 }
 
 
-#define MAX_NODE_LOAD (nr_online_nodes)
 static int node_load[MAX_NUMNODES];
 
 /**
@@ -6229,7 +6228,7 @@ int find_next_best_node(int node, nodema
 			val += PENALTY_FOR_NODE_WITH_CPUS;
 
 		/* Slight preference for less loaded node */
-		val *= (MAX_NODE_LOAD*MAX_NUMNODES);
+		val *= MAX_NUMNODES;
 		val += node_load[n];
 
 		if (val < min_val) {
@@ -6312,7 +6311,7 @@ static void build_zonelists(pg_data_t *p
 		 */
 		if (node_distance(local_node, node) !=
 		    node_distance(local_node, prev_node))
-			node_load[node] += nr_online_nodes;
+			node_load[node] += 1;
 
 		node_order[nr_nodes++] = node;
 		prev_node = node;
_

Patches currently in -mm which might be from richard.weiyang@gmail.com are

mm-memcg-mz-already-removed-from-rb_tree-if-not-null.patch
mm-memcg-set-memcg-after-css-verified-and-got-reference.patch
mm-memcg-set-pos-explicitly-for-reclaim-and-reclaim.patch
mm-memcg-move-generation-assignment-and-comparison-together.patch
mm-memcg-non-hierarchical-mode-is-deprecated.patch
mm-page_alloc-add-same-penalty-is-enough-to-get-round-robin-order.patch
mm-page_alloc-add-same-penalty-is-enough-to-get-round-robin-order-v3.patch
mm-vmscan-reclaim-only-affects-managed_zones.patch
mm-vmscan-make-sure-wakeup_kswapd-with-managed-zone.patch
mm-vmscan-make-sure-wakeup_kswapd-with-managed-zone-v2.patch
mm-vmscan-sc-reclaim_idx-must-be-a-valid-zone-index.patch