diff --git a/fs/fs-writeback.c b/fs/fs-writeback.c
index 51c8a5b..da35587 100644
--- a/fs/fs-writeback.c
+++ b/fs/fs-writeback.c
@@ -1071,22 +1071,6 @@
 	return nr_pages - work.nr_pages;
 }
 
-static bool over_bground_thresh(struct bdi_writeback *wb)
-{
-	unsigned long background_thresh, dirty_thresh;
-
-	global_dirty_limits(&background_thresh, &dirty_thresh);
-
-	if (global_page_state(NR_FILE_DIRTY) +
-	    global_page_state(NR_UNSTABLE_NFS) > background_thresh)
-		return true;
-
-	if (wb_stat(wb, WB_RECLAIMABLE) > wb_calc_thresh(wb, background_thresh))
-		return true;
-
-	return false;
-}
-
 /*
  * Explicit flushing or periodic writeback of "old" data.
  *
@@ -1136,7 +1120,7 @@
 		 * For background writeout, stop when we are below the
 		 * background dirty threshold
 		 */
-		if (work->for_background && !over_bground_thresh(wb))
+		if (work->for_background && !wb_over_bg_thresh(wb))
 			break;
 
 		/*
@@ -1227,7 +1211,7 @@
 
 static long wb_check_background_flush(struct bdi_writeback *wb)
 {
-	if (over_bground_thresh(wb)) {
+	if (wb_over_bg_thresh(wb)) {
 
 		struct wb_writeback_work work = {
 			.nr_pages	= LONG_MAX,