X-Git-Url: http://pilppa.org/gitweb/gitweb.cgi?a=blobdiff_plain;f=mm%2Fmmzone.c;h=486ed595ee6fa939f1cef55b7e4349d000d86317;hb=f42157cb568c1eb02eca7df4da67553a9edae24a;hp=febea1c981685af5f05122434aa6f0ce11778430;hpb=4bf311ddfbffe12d41ad1a3c311ab727db6f72cb;p=linux-2.6-omap-h63xx.git

diff --git a/mm/mmzone.c b/mm/mmzone.c
index febea1c9816..486ed595ee6 100644
--- a/mm/mmzone.c
+++ b/mm/mmzone.c
@@ -14,8 +14,6 @@ struct pglist_data *first_online_pgdat(void)
 	return NODE_DATA(first_online_node);
 }
 
-EXPORT_UNUSED_SYMBOL(first_online_pgdat);  /*  June 2006  */
-
 struct pglist_data *next_online_pgdat(struct pglist_data *pgdat)
 {
 	int nid = next_online_node(pgdat->node_id);
@@ -24,8 +22,6 @@ struct pglist_data *next_online_pgdat(struct pglist_data *pgdat)
 		return NULL;
 	return NODE_DATA(nid);
 }
-EXPORT_UNUSED_SYMBOL(next_online_pgdat);  /*  June 2006  */
-
 
 /*
  * next_zone - helper magic for for_each_zone()
@@ -45,5 +41,34 @@ struct zone *next_zone(struct zone *zone)
 	}
 	return zone;
 }
-EXPORT_UNUSED_SYMBOL(next_zone);  /*  June 2006  */
 
+static inline int zref_in_nodemask(struct zoneref *zref, nodemask_t *nodes)
+{
+#ifdef CONFIG_NUMA
+	return node_isset(zonelist_node_idx(zref), *nodes);
+#else
+	return 1;
+#endif /* CONFIG_NUMA */
+}
+
+/* Returns the next zone at or below highest_zoneidx in a zonelist */
+struct zoneref *next_zones_zonelist(struct zoneref *z,
+					enum zone_type highest_zoneidx,
+					nodemask_t *nodes,
+					struct zone **zone)
+{
+	/*
+	 * Find the next suitable zone to use for the allocation.
+	 * Only filter based on nodemask if it's set
+	 */
+	if (likely(nodes == NULL))
+		while (zonelist_zone_idx(z) > highest_zoneidx)
+			z++;
+	else
+		while (zonelist_zone_idx(z) > highest_zoneidx ||
+				(z->zone && !zref_in_nodemask(z, nodes)))
+			z++;
+
+	*zone = zonelist_zone(z++);
+	return z;
+}