X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=mm%2Fpage_alloc.c;h=353ce9039a86f477ac13897bb76ab522c718ab87;hb=fa70fe44aba95ce373d7bcd27df4a594b53dcbdc;hp=6cff13840c6df5c2c093be9bfd47dd4addf1c109;hpb=6267276f3fdda9ad0d5ca451bdcbdf42b802d64b;p=firefly-linux-kernel-4.4.55.git

diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 6cff13840c6d..353ce9039a86 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -73,7 +73,9 @@ static void __free_pages_ok(struct page *page, unsigned int order);
  * don't need any ZONE_NORMAL reservation
  */
 int sysctl_lowmem_reserve_ratio[MAX_NR_ZONES-1] = {
+#ifdef CONFIG_ZONE_DMA
 	 256,
+#endif
 #ifdef CONFIG_ZONE_DMA32
 	 256,
 #endif
@@ -85,7 +87,9 @@ int sysctl_lowmem_reserve_ratio[MAX_NR_ZONES-1] = {
 EXPORT_SYMBOL(totalram_pages);
 
 static char * const zone_names[MAX_NR_ZONES] = {
+#ifdef CONFIG_ZONE_DMA
 	 "DMA",
+#endif
 #ifdef CONFIG_ZONE_DMA32
 	 "DMA32",
 #endif
@@ -596,7 +600,7 @@ static int prep_new_page(struct page *page, int order, gfp_t gfp_flags)
 
 	page->flags &= ~(1 << PG_uptodate | 1 << PG_error |
 			1 << PG_referenced | 1 << PG_arch_1 |
-			1 << PG_checked | 1 << PG_mappedtodisk);
+			1 << PG_owner_priv_1 | 1 << PG_mappedtodisk);
 	set_page_private(page, 0);
 	set_page_refcounted(page);
 
@@ -660,6 +664,26 @@ static int rmqueue_bulk(struct zone *zone, unsigned int order,
 	return i;
 }
 
+#if MAX_NUMNODES > 1
+int nr_node_ids __read_mostly;
+EXPORT_SYMBOL(nr_node_ids);
+
+/*
+ * Figure out the number of possible node ids.
+ */
+static void __init setup_nr_node_ids(void)
+{
+	unsigned int node;
+	unsigned int highest = 0;
+
+	for_each_node_mask(node, node_possible_map)
+		highest = node;
+	nr_node_ids = highest + 1;
+}
+#else
+static void __init setup_nr_node_ids(void) {}
+#endif
+
 #ifdef CONFIG_NUMA
 /*
  * Called from the slab reaper to drain pagesets on a particular node that
@@ -2940,6 +2964,7 @@ void __init free_area_init_nodes(unsigned long *max_zone_pfn)
 						early_node_map[i].end_pfn);
 
 	/* Initialise every node */
+	setup_nr_node_ids();
 	for_each_online_node(nid) {
 		pg_data_t *pgdat = NODE_DATA(nid);
 		free_area_init_node(nid, pgdat, NULL,
@@ -3366,18 +3391,4 @@ EXPORT_SYMBOL(pfn_to_page);
 EXPORT_SYMBOL(page_to_pfn);
 #endif /* CONFIG_OUT_OF_LINE_PFN_TO_PAGE */
 
-#if MAX_NUMNODES > 1
-/*
- * Find the highest possible node id.
- */
-int highest_possible_node_id(void)
-{
-	unsigned int node;
-	unsigned int highest = 0;
 
-	for_each_node_mask(node, node_possible_map)
-		highest = node;
-	return highest;
-}
-EXPORT_SYMBOL(highest_possible_node_id);
-#endif