--- d228de32ebd16603009cfc1ac11c9ce9b64b5536
+++ d3dcc09b68b05c08e261cb93be1719eb774d15e0
@@ -15,6 +15,7 @@
 #include <linux/seqlock.h>
 #include <linux/nodemask.h>
 #include <linux/pageblock-flags.h>
+#include <linux/timer.h>
 #include <generated/bounds.h>
 #include <asm/atomic.h>
 #include <asm/page.h>
@@ -173,12 +174,14 @@ enum zone_watermarks {
 	WMARK_MIN,
 	WMARK_LOW,
 	WMARK_HIGH,
+	WMARK_LOTS,
 	NR_WMARK
 };
 
 #define min_wmark_pages(z) (z->watermark[WMARK_MIN])
 #define low_wmark_pages(z) (z->watermark[WMARK_LOW])
 #define high_wmark_pages(z) (z->watermark[WMARK_HIGH])
+#define lots_wmark_pages(z) (z->watermark[WMARK_LOTS])
 
 struct per_cpu_pages {
 	int count;		/* number of pages in the list */
@@ -350,7 +353,7 @@ struct zone {
 	ZONE_PADDING(_pad1_)
 
 	/* Fields commonly accessed by the page reclaim scanner */
-	spinlock_t		lru_lock;	
+	spinlock_t		lru_lock;
 	struct zone_lru {
 		struct list_head list;
 	} lru[NR_LRU_LISTS];
@@ -652,6 +655,7 @@ typedef struct pglist_data {
 	wait_queue_head_t kswapd_wait;
 	struct task_struct *kswapd;
 	int kswapd_max_order;
+	struct timer_list watermark_timer;
 	enum zone_type classzone_idx;
 } pg_data_t;