diff -urpN lb4-2.5.44/mm/page_alloc.c lb5-2.5.44/mm/page_alloc.c
--- lb4-2.5.44/mm/page_alloc.c	2002-10-28 18:44:31.000000000 -0800
+++ lb5-2.5.44/mm/page_alloc.c	2002-10-28 19:08:03.000000000 -0800
@@ -294,9 +294,58 @@ static struct page *buddy_alloc(struct z
 	return NULL;
 }
 
+static void split_pages(struct zone *zone, struct page *page, int page_order, int deferred_order)
+{
+	int split_order = deferred_order - 1;
+	unsigned long split_offset = 1UL << split_order;
+	struct page *split_page;
+
+	while (split_order >= page_order) {
+		split_page = &page[split_offset];
+		list_add(&split_page->list, &zone->free_area[split_order].deferred_pages);
+		zone->free_area[split_order].locally_free++;
+		--split_order;
+		split_offset >>= 1;
+	}
+}
+
+#define COALESCE_BATCH 256
 static inline struct page *steal_deferred_page(struct zone *zone, int order)
 {
-	return NULL;
+	struct page *page;
+	struct list_head *elem;
+	struct free_area *area = zone->free_area;
+	int found_order, k;
+
+	if (zone->free_pages < (1 << order))
+		return NULL;
+
+	for (found_order = order + 1; found_order < MAX_ORDER; ++found_order)
+		if (!list_empty(&area[found_order].deferred_pages)) {
+			elem = area[found_order].deferred_pages.next;
+			page = list_entry(elem, struct page, list);
+			list_del(elem);
+			area[found_order].locally_free--;
+			split_pages(zone, page, order, found_order);
+			return page;
+		}
+
+	for (found_order = order - 1; found_order >= 0; --found_order) {
+		for (k = 0; k < COALESCE_BATCH; ++k) {
+			unsigned long mask = (~0UL) << found_order;
+			if (list_empty(&area[found_order].deferred_pages))
+				break;
+			elem = area[found_order].deferred_pages.next;
+			page = list_entry(elem, struct page, list);
+			list_del(elem);
+			area[found_order].locally_free--;
+			buddy_free(page, zone->zone_mem_map, zone, &area[found_order], mask, found_order);
+		}
+		page = buddy_alloc(zone, order);
+		if (page)
+			return page;
+	}
+	return buddy_alloc(zone, order);
 }
 
 static inline struct page *__rmqueue(struct zone *zone, unsigned int order)