diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 03fef8d..676aec9 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -159,8 +159,13 @@
 #endif
 
 #ifdef CONFIG_PAGE_GROUP_BY_MOBILITY
+int page_group_by_mobility_disabled __read_mostly;
+
 static inline int get_pageblock_migratetype(struct page *page)
 {
+	if (unlikely(page_group_by_mobility_disabled))
+		return MIGRATE_UNMOVABLE;
+
 	return get_pageblock_flags_group(page, PB_migrate, PB_migrate_end);
 }
 
@@ -174,6 +179,9 @@
 {
 	WARN_ON((gfp_flags & GFP_MOVABLE_MASK) == GFP_MOVABLE_MASK);
 
+	if (unlikely(page_group_by_mobility_disabled))
+		return MIGRATE_UNMOVABLE;
+
 	/* Cluster high-order atomic allocations together */
 	if (unlikely(order > 0) &&
 			(!(gfp_flags & __GFP_WAIT) || in_interrupt()))
@@ -2375,9 +2383,23 @@
 		/* cpuset refresh routine should be here */
 	}
 	vm_total_pages = nr_free_pagecache_pages();
-	printk("Built %i zonelists in %s order.  Total pages: %ld\n",
+	/*
+	 * Disable grouping by mobility if the number of pages in the
+	 * system is too low to allow the mechanism to work. It would be
+	 * more accurate, but expensive to check per-zone. This check is
+	 * made on memory-hotadd so a system can start with mobility
+	 * disabled and enable it later
+	 */
+	if (vm_total_pages < (MAX_ORDER_NR_PAGES * MIGRATE_TYPES))
+		page_group_by_mobility_disabled = 1;
+	else
+		page_group_by_mobility_disabled = 0;
+
+	printk("Built %i zonelists in %s order, mobility grouping %s.  "
+		"Total pages: %ld\n",
 			num_online_nodes(),
 			zonelist_order_name[current_zonelist_order],
+			page_group_by_mobility_disabled ? "off" : "on",
 			vm_total_pages);
 #ifdef CONFIG_NUMA
 	printk("Policy zone: %s\n", zone_names[policy_zone]);