writeback: fix mixed up arguments to bdi_start_writeback()

The laptop mode timer had the nr_pages and sb_locked arguments
mixed up.

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/mm/page-writeback.c b/mm/page-writeback.c
index 9886424e1864..b289310e2c89 100644
--- a/mm/page-writeback.c
+++ b/mm/page-writeback.c
@@ -707,7 +707,7 @@ void laptop_mode_timer_fn(unsigned long data)
          */
 
         if (bdi_has_dirty_io(&q->backing_dev_info))
-                bdi_start_writeback(&q->backing_dev_info, NULL, 0, nr_pages);
+                bdi_start_writeback(&q->backing_dev_info, NULL, nr_pages, 0);
 }
 
 /*