1 files changed, 3 insertions, 3 deletions

diff --git a/mm/page-writeback.c b/mm/page-writeback.c
index 518e2c3f4c75..e0c943014eb7 100644
--- a/mm/page-writeback.c
+++ b/mm/page-writeback.c
@@ -1306,9 +1306,9 @@ static inline void bdi_dirty_limits(struct backing_dev_info *bdi,
         *bdi_thresh = bdi_dirty_limit(bdi, dirty_thresh);
 
         if (bdi_bg_thresh)
-                *bdi_bg_thresh = div_u64((u64)*bdi_thresh *
-                                         background_thresh,
-                                         dirty_thresh);
+                *bdi_bg_thresh = dirty_thresh ? div_u64((u64)*bdi_thresh *
+                                                        background_thresh,
+                                                        dirty_thresh) : 0;
 
         /*
          * In order to avoid the stacked BDI deadlock we need