diff --git a/mm/page-writeback.c b/mm/page-writeback.c
index 5fa63bd..b3dbb80 100644
--- a/mm/page-writeback.c
+++ b/mm/page-writeback.c
@@ -835,7 +835,6 @@
 	pgoff_t done_index;
 	int cycled;
 	int range_whole = 0;
-	long nr_to_write = wbc->nr_to_write;
 
 	pagevec_init(&pvec, 0);
 	if (wbc->range_cyclic) {
@@ -935,11 +934,10 @@
 					done = 1;
 					break;
 				}
- 			}
+			}
 
-			if (nr_to_write > 0) {
-				nr_to_write--;
-				if (nr_to_write == 0 &&
+			if (wbc->nr_to_write > 0) {
+				if (--wbc->nr_to_write == 0 &&
 				    wbc->sync_mode == WB_SYNC_NONE) {
 					/*
 					 * We stop writing back only if we are
@@ -970,11 +968,8 @@
 		end = writeback_index - 1;
 		goto retry;
 	}
-	if (!wbc->no_nrwrite_index_update) {
-		if (wbc->range_cyclic || (range_whole && nr_to_write > 0))
-			mapping->writeback_index = done_index;
-		wbc->nr_to_write = nr_to_write;
-	}
+	if (wbc->range_cyclic || (range_whole && wbc->nr_to_write > 0))
+		mapping->writeback_index = done_index;
 
 	return ret;
 }