---

yaml
---
r: 109403
b: refs/heads/master
c: 344c790
h: refs/heads/master
i:
  109401: 46247bb
  109399: 0ee4c30
v: v3

[refs]

@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 169ccbd44eb20f5bb7e4352451eba25397e29749
+refs/heads/master: 344c790e3821dac37eb742ddd0b611a300f78b9a

trunk/mm/page_alloc.c

@@ -694,6 +694,9 @@ static int move_freepages(struct zone *zone,
 #endif
 
 	for (page = start_page; page <= end_page;) {
+		/* Make sure we are not inadvertently changing nodes */
+		VM_BUG_ON(page_to_nid(page) != zone_to_nid(zone));
+
 		if (!pfn_valid_within(page_to_pfn(page))) {
 			page++;
 			continue;
@@ -2516,6 +2519,10 @@ static void setup_zone_migrate_reserve(struct zone *zone)
 			continue;
 		page = pfn_to_page(pfn);
 
+		/* Watch out for overlapping nodes */
+		if (page_to_nid(page) != zone_to_nid(zone))
+			continue;
+
 		/* Blocks with reserved pages will never free, skip them. */
 		if (PageReserved(page))
 			continue;