---

yaml
---
r: 332457
b: refs/heads/master
c: 957f822
h: refs/heads/master
i:
  332455: f61831d
v: v3

[refs]

@@ -1,2 +1,2 @@
 ---
-refs/heads/master: a0c5e813f087dffc0d9b173d2e7d3328b1482fd5
+refs/heads/master: 957f822a0ab95e88b146638bad6209bbc315bedd

trunk/include/linux/mmzone.h

@@ -709,6 +709,7 @@ typedef struct pglist_data {
 	unsigned long node_spanned_pages; /* total size of physical page
 					     range, including holes */
 	int node_id;
+	nodemask_t reclaim_nodes;	/* Nodes allowed to reclaim from */
 	wait_queue_head_t kswapd_wait;
 	wait_queue_head_t pfmemalloc_wait;
 	struct task_struct *kswapd;	/* Protected by lock_memory_hotplug() */

trunk/mm/page_alloc.c

@@ -1799,6 +1799,22 @@ static void zlc_clear_zones_full(struct zonelist *zonelist)
 	bitmap_zero(zlc->fullzones, MAX_ZONES_PER_ZONELIST);
 }
 
+static bool zone_allows_reclaim(struct zone *local_zone, struct zone *zone)
+{
+	return node_isset(local_zone->node, zone->zone_pgdat->reclaim_nodes);
+}
+
+static void __paginginit init_zone_allows_reclaim(int nid)
+{
+	int i;
+
+	for_each_online_node(i)
+		if (node_distance(nid, i) <= RECLAIM_DISTANCE) {
+			node_set(i, NODE_DATA(nid)->reclaim_nodes);
+			zone_reclaim_mode = 1;
+		}
+}
+
 #else	/* CONFIG_NUMA */
 
 static nodemask_t *zlc_setup(struct zonelist *zonelist, int alloc_flags)
@@ -1819,6 +1835,15 @@ static void zlc_mark_zone_full(struct zonelist *zonelist, struct zoneref *z)
 static void zlc_clear_zones_full(struct zonelist *zonelist)
 {
 }
+
+static bool zone_allows_reclaim(struct zone *local_zone, struct zone *zone)
+{
+	return true;
+}
+
+static inline void init_zone_allows_reclaim(int nid)
+{
+}
 #endif	/* CONFIG_NUMA */
 
 /*
@@ -1903,7 +1928,8 @@ get_page_from_freelist(gfp_t gfp_mask, nodemask_t *nodemask, unsigned int order,
 				did_zlc_setup = 1;
 			}
 
-			if (zone_reclaim_mode == 0)
+			if (zone_reclaim_mode == 0 ||
+			    !zone_allows_reclaim(preferred_zone, zone))
 				goto this_zone_full;
 
 			/*
@@ -3364,21 +3390,13 @@ static void build_zonelists(pg_data_t *pgdat)
 	j = 0;
 
 	while ((node = find_next_best_node(local_node, &used_mask)) >= 0) {
-		int distance = node_distance(local_node, node);
-
-		/*
-		 * If another node is sufficiently far away then it is better
-		 * to reclaim pages in a zone before going off node.
-		 */
-		if (distance > RECLAIM_DISTANCE)
-			zone_reclaim_mode = 1;
-
 		/*
 		 * We don't want to pressure a particular node.
 		 * So adding penalty to the first node in same
 		 * distance group to make it round-robin.
 		 */
-		if (distance != node_distance(local_node, prev_node))
+		if (node_distance(local_node, node) !=
+		    node_distance(local_node, prev_node))
 			node_load[node] = load;
 
 		prev_node = node;
@@ -4552,6 +4570,7 @@ void __paginginit free_area_init_node(int nid, unsigned long *zones_size,
 
 	pgdat->node_id = nid;
 	pgdat->node_start_pfn = node_start_pfn;
+	init_zone_allows_reclaim(nid);
 	calculate_node_totalpages(pgdat, zones_size, zholes_size);
 
 	alloc_node_mem_map(pgdat);