1 files changed, 9 insertions, 1 deletions

diff --git a/include/linux/backing-dev.h b/include/linux/backing-dev.h
index 96f4094b706d..3b2f9cb82986 100644
--- a/include/linux/backing-dev.h
+++ b/include/linux/backing-dev.h
@@ -16,7 +16,7 @@
 #include <linux/sched.h>
 #include <linux/timer.h>
 #include <linux/writeback.h>
-#include <asm/atomic.h>
+#include <linux/atomic.h>
 
 struct page;
 struct device;
@@ -40,6 +40,7 @@ typedef int (congested_fn)(void *, int);
 enum bdi_stat_item {
         BDI_RECLAIMABLE,
         BDI_WRITEBACK,
+        BDI_WRITTEN,
         NR_BDI_STAT_ITEMS
 };
 
@@ -57,6 +58,7 @@ struct bdi_writeback {
         struct list_head b_dirty;       /* dirty inodes */
         struct list_head b_io;          /* parked for writeback */
         struct list_head b_more_io;     /* parked for more writeback */
+        spinlock_t list_lock;           /* protects the b_* lists */
 };
 
 struct backing_dev_info {
@@ -71,6 +73,11 @@ struct backing_dev_info {
 
         struct percpu_counter bdi_stat[NR_BDI_STAT_ITEMS];
 
+        unsigned long bw_time_stamp;    /* last time write bw is updated */
+        unsigned long written_stamp;    /* pages written at bw_time_stamp */
+        unsigned long write_bandwidth;  /* the estimated write bandwidth */
+        unsigned long avg_write_bandwidth; /* further smoothed write bw */
+
         struct prop_local_percpu completions;
         int dirty_exceeded;
 
@@ -106,6 +113,7 @@ int bdi_writeback_thread(void *data);
 int bdi_has_dirty_io(struct backing_dev_info *bdi);
 void bdi_arm_supers_timer(void);
 void bdi_wakeup_thread_delayed(struct backing_dev_info *bdi);
+void bdi_lock_two(struct bdi_writeback *wb1, struct bdi_writeback *wb2);
 
 extern spinlock_t bdi_lock;
 extern struct list_head bdi_list;