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Diffstat (limited to 'include/linux/backing-dev.h')
-rw-r--r--include/linux/backing-dev.h10
1 files changed, 9 insertions, 1 deletions
diff --git a/include/linux/backing-dev.h b/include/linux/backing-dev.h
index 96f4094b706..3b2f9cb8298 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;