I missed folding a list walking fix. Use this diff on top
for testing.
diff --git a/mm/memory-tiers.c b/mm/memory-tiers.c
index b2da34a1f06c..f3d720b7dc6c 100644
--- a/mm/memory-tiers.c
+++ b/mm/memory-tiers.c
@@ -300,12 +300,12 @@ static void establish_migration_targets(void)
nd = &node_demotion[node];
memtier = __node_get_memory_tier(node);
- if (!memtier || list_is_last(&memtier->list, &memory_tiers))
+ if (!memtier || list_is_first(&memtier->list, &memory_tiers))
continue;
/*
* Get the next memtier to find the demotion node list.
*/
- memtier = list_next_entry(memtier, list);
+ memtier = list_prev_entry(memtier, list);
/*
* find_next_best_node, use 'used' nodemask as a skip list.
@@ -342,7 +342,7 @@ static void establish_migration_targets(void)
* Once we detect such a memory tier, we consider that tier
* as top tiper from which promotion is not allowed.
*/
- list_for_each_entry_reverse(memtier, &memory_tiers, list) {
+ list_for_each_entry(memtier, &memory_tiers, list) {
nodes_and(used, node_states[N_CPU], memtier->nodelist);
if (!nodes_empty(used)) {
top_tier_id = memtier->id;
@@ -364,7 +364,7 @@ static void establish_migration_targets(void)
*/
nodes_and(lower_tier, node_states[N_MEMORY], lower_tier);
- list_for_each_entry(memtier, &memory_tiers, list) {
+ list_for_each_entry_reverse(memtier, &memory_tiers, list) {
/*
* Keep removing current tier from lower_tier nodes,
* This will remove all nodes in current and above
