writeback: don't use schedule_timeout() without setting runstate

Just use schedule_timeout_interruptible(), saves a call to
set_current_state().

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 1eea4fa0d410..2585349469e0 100644
--- a/mm/page-writeback.c
+++ b/mm/page-writeback.c
@@ -561,7 +561,7 @@ static void balance_dirty_pages(struct address_space *mapping)
                 if (pages_written >= write_chunk)
                         break;          /* We've done our duty */
 
-                schedule_timeout(1);
+                schedule_timeout_interruptible(1);
         }
 
         if (bdi_nr_reclaimable + bdi_nr_writeback < bdi_thresh &&