---

yaml
---
r: 64271
b: refs/heads/master
c: b377fd3
h: refs/heads/master
i:
  64269: 6bf20b9
  64267: 7f8fba4
  64263: df7a779
  64255: 4024b62
v: v3

[refs]

@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 8e92f21ba3ea3f54e4be062b87ef9fc4af2d33e2
+refs/heads/master: b377fd3982ad957c796758a90e2988401a884241

trunk/include/linux/mempolicy.h

@@ -166,7 +166,7 @@ extern enum zone_type policy_zone;
 
 static inline void check_highest_zone(enum zone_type k)
 {
-	if (k > policy_zone)
+	if (k > policy_zone && k != ZONE_MOVABLE)
 		policy_zone = k;
 }
 

trunk/include/linux/mmzone.h

@@ -410,6 +410,24 @@ struct zonelist {
 #endif
 };
 
+#ifdef CONFIG_NUMA
+/*
+ * Only custom zonelists like MPOL_BIND need to be filtered as part of
+ * policies. As described in the comment for struct zonelist_cache, these
+ * zonelists will not have a zlcache so zlcache_ptr will not be set. Use
+ * that to determine if the zonelists needs to be filtered or not.
+ */
+static inline int alloc_should_filter_zonelist(struct zonelist *zonelist)
+{
+	return !zonelist->zlcache_ptr;
+}
+#else
+static inline int alloc_should_filter_zonelist(struct zonelist *zonelist)
+{
+	return 0;
+}
+#endif /* CONFIG_NUMA */
+
 #ifdef CONFIG_ARCH_POPULATES_NODE_MAP
 struct node_active_region {
 	unsigned long start_pfn;

trunk/mm/mempolicy.c

@@ -149,7 +149,7 @@ static struct zonelist *bind_zonelist(nodemask_t *nodes)
 	   lower zones etc. Avoid empty zones because the memory allocator
 	   doesn't like them. If you implement node hot removal you
 	   have to fix that. */
-	k = policy_zone;
+	k = MAX_NR_ZONES - 1;
 	while (1) {
 		for_each_node_mask(nd, *nodes) { 
 			struct zone *z = &NODE_DATA(nd)->node_zones[k];

trunk/mm/page_alloc.c

@@ -1157,6 +1157,7 @@ get_page_from_freelist(gfp_t gfp_mask, unsigned int order,
 	nodemask_t *allowednodes = NULL;/* zonelist_cache approximation */
 	int zlc_active = 0;		/* set if using zonelist_cache */
 	int did_zlc_setup = 0;		/* just call zlc_setup() one time */
+	enum zone_type highest_zoneidx = -1; /* Gets set for policy zonelists */
 
 zonelist_scan:
 	/*
@@ -1166,6 +1167,18 @@ get_page_from_freelist(gfp_t gfp_mask, unsigned int order,
 	z = zonelist->zones;
 
 	do {
+		/*
+		 * In NUMA, this could be a policy zonelist which contains
+		 * zones that may not be allowed by the current gfp_mask.
+		 * Check the zone is allowed by the current flags
+		 */
+		if (unlikely(alloc_should_filter_zonelist(zonelist))) {
+			if (highest_zoneidx == -1)
+				highest_zoneidx = gfp_zone(gfp_mask);
+			if (zone_idx(*z) > highest_zoneidx)
+				continue;
+		}
+
 		if (NUMA_BUILD && zlc_active &&
 			!zlc_zone_worth_trying(zonelist, z, allowednodes))
 				continue;