1 files changed, 13 insertions, 0 deletions

diff --git a/fs/fs-writeback.c b/fs/fs-writeback.c
index 2c947da39f6e..5826992910e9 100644
--- a/fs/fs-writeback.c
+++ b/fs/fs-writeback.c
@@ -693,6 +693,16 @@ static inline bool over_bground_thresh(void)
 }
 
 /*
+ * Called under wb->list_lock. If there are multiple wb per bdi,
+ * only the flusher working on the first wb should do it.
+ */
+static void wb_update_bandwidth(struct bdi_writeback *wb,
+                                unsigned long start_time)
+{
+        __bdi_update_bandwidth(wb->bdi, start_time);
+}
+
+/*
  * Explicit flushing or periodic writeback of "old" data.
  *
  * Define "old": the first time one of an inode's pages is dirtied, we mark the
@@ -710,6 +720,7 @@ static inline bool over_bground_thresh(void)
 static long wb_writeback(struct bdi_writeback *wb,
                          struct wb_writeback_work *work)
 {
+        unsigned long wb_start = jiffies;
         long nr_pages = work->nr_pages;
         unsigned long oldest_jif;
         struct inode *inode;
@@ -758,6 +769,8 @@ static long wb_writeback(struct bdi_writeback *wb,
                         progress = __writeback_inodes_wb(wb, work);
                 trace_writeback_written(wb->bdi, work);
 
+                wb_update_bandwidth(wb, wb_start);
+
                 /*
                  * Did we write something? Try for more
                  *