Hugepages demand paging V2 [3/8]: simple numa compatible allocator

[Christoph Lameter]

Changelog
	* Simple NUMA compatible allocation of hugepages in the nearest node

Index: linux-2.6.9/mm/hugetlb.c
===================================================================
--- linux-2.6.9.orig/mm/hugetlb.c	2004-10-22 13:28:27.000000000 -0700
+++ linux-2.6.9/mm/hugetlb.c	2004-10-25 16:56:22.000000000 -0700
@@ -32,14 +32,17 @@
 {
 	int nid = numa_node_id();
 	struct page *page = NULL;
-
-	if (list_empty(&hugepage_freelists[nid])) {
-		for (nid = 0; nid < MAX_NUMNODES; ++nid)
-			if (!list_empty(&hugepage_freelists[nid]))
-				break;
+	struct zonelist *zonelist = NODE_DATA(nid)->node_zonelists;
+	struct zone **zones = zonelist->zones;
+	struct zone *z;
+	int i;
+
+	for(i=0; (z = zones[i])!= NULL; i++) {
+		nid = z->zone_pgdat->node_id;
+		if (!list_empty(&hugepage_freelists[nid]))
+			break;
 	}
-	if (nid >= 0 && nid < MAX_NUMNODES &&
-	    !list_empty(&hugepage_freelists[nid])) {
+	if (z) {
 		page = list_entry(hugepage_freelists[nid].next,
 				  struct page, lru);
 		list_del(&page->lru);

-
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