diff --git a/mm/compaction.c b/mm/compaction.c
index 9583e19..94cce51 100644
--- a/mm/compaction.c
+++ b/mm/compaction.c
@@ -433,6 +433,8 @@
 	return compact_zone(zone, &cc);
 }
 
+int sysctl_extfrag_threshold = 500;
+
 /**
  * try_to_compact_pages - Direct compact to satisfy a high-order allocation
  * @zonelist: The zonelist used for the current allocation
@@ -491,7 +493,7 @@
 		 * Only compact if a failure would be due to fragmentation.
 		 */
 		fragindex = fragmentation_index(zone, order);
-		if (fragindex >= 0 && fragindex <= 500)
+		if (fragindex >= 0 && fragindex <= sysctl_extfrag_threshold)
 			continue;
 
 		if (fragindex == -1 && zone_watermark_ok(zone, order, watermark, 0, 0)) {
@@ -572,6 +574,14 @@
 	return 0;
 }
 
+int sysctl_extfrag_handler(struct ctl_table *table, int write,
+			void __user *buffer, size_t *length, loff_t *ppos)
+{
+	proc_dointvec_minmax(table, write, buffer, length, ppos);
+
+	return 0;
+}
+
 #if defined(CONFIG_SYSFS) && defined(CONFIG_NUMA)
 ssize_t sysfs_compact_node(struct sys_device *dev,
 			struct sysdev_attribute *attr,