writeback: add bg_threshold parameter to __bdi_update_bandwidth()

No behavior change.

Signed-off-by: Wu Fengguang <fengguang.wu@intel.com>

1 files changed, 7 insertions, 4 deletions

diff --git a/mm/page-writeback.c b/mm/page-writeback.c
index c16ddd8f5cb6..4b954c9fe846 100644
--- a/mm/page-writeback.c
+++ b/mm/page-writeback.c
@@ -779,6 +779,7 @@ static void global_update_bandwidth(unsigned long thresh,
 
 void __bdi_update_bandwidth(struct backing_dev_info *bdi,
                             unsigned long thresh,
+                            unsigned long bg_thresh,
                             unsigned long dirty,
                             unsigned long bdi_thresh,
                             unsigned long bdi_dirty,
@@ -815,6 +816,7 @@ snapshot:
 
 static void bdi_update_bandwidth(struct backing_dev_info *bdi,
                                  unsigned long thresh,
+                                 unsigned long bg_thresh,
                                  unsigned long dirty,
                                  unsigned long bdi_thresh,
                                  unsigned long bdi_dirty,
@@ -823,8 +825,8 @@ static void bdi_update_bandwidth(struct backing_dev_info *bdi,
         if (time_is_after_eq_jiffies(bdi->bw_time_stamp + BANDWIDTH_INTERVAL))
                 return;
         spin_lock(&bdi->wb.list_lock);
-        __bdi_update_bandwidth(bdi, thresh, dirty, bdi_thresh, bdi_dirty,
-                               start_time);
+        __bdi_update_bandwidth(bdi, thresh, bg_thresh, dirty,
+                               bdi_thresh, bdi_dirty, start_time);
         spin_unlock(&bdi->wb.list_lock);
 }
 
@@ -912,8 +914,9 @@ static void balance_dirty_pages(struct address_space *mapping,
                 if (!bdi->dirty_exceeded)
                         bdi->dirty_exceeded = 1;
 
-                bdi_update_bandwidth(bdi, dirty_thresh, nr_dirty,
-                                     bdi_thresh, bdi_dirty, start_time);
+                bdi_update_bandwidth(bdi, dirty_thresh, background_thresh,
+                                     nr_dirty, bdi_thresh, bdi_dirty,
+                                     start_time);
 
                 /* Note: nr_reclaimable denotes nr_dirty + nr_unstable.
                  * Unstable writes are a feature of certain networked