1 files changed, 1 insertions, 1 deletions

diff --git a/mm/page-writeback.c b/mm/page-writeback.c
index 4ec7026c7bab..60c7244c42e4 100644
--- a/mm/page-writeback.c
+++ b/mm/page-writeback.c
@@ -111,7 +111,7 @@ static void get_writeback_state(struct writeback_state *wbs)
 {
         wbs->nr_dirty = read_page_state(nr_dirty);
         wbs->nr_unstable = read_page_state(nr_unstable);
-        wbs->nr_mapped = read_page_state(nr_mapped);
+        wbs->nr_mapped = global_page_state(NR_FILE_MAPPED);
         wbs->nr_writeback = read_page_state(nr_writeback);
 }