diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 3bac76a..348ca03 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -206,6 +206,7 @@
 
 int min_free_kbytes = 1024;
 int user_min_free_kbytes = -1;
+int min_free_order_shift = 1;
 
 static unsigned long __meminitdata nr_kernel_pages;
 static unsigned long __meminitdata nr_all_pages;
@@ -1712,7 +1713,7 @@
 		free_pages -= z->free_area[o].nr_free << o;
 
 		/* Require fewer higher order pages to be free */
-		min >>= 1;
+		min >>= min_free_order_shift;
 
 		if (free_pages <= min)
 			return false;