1 files changed, 23 insertions, 0 deletions

diff --git a/drivers/md/bitmap.c b/drivers/md/bitmap.c
index 09d32db06d20..41df4cda66e2 100644
--- a/drivers/md/bitmap.c
+++ b/drivers/md/bitmap.c
@@ -1451,6 +1451,29 @@ static void bitmap_set_memory_bits(struct bitmap *bitmap, sector_t offset)
 }
 
 /*
+ * flush out any pending updates
+ */
+void bitmap_flush(mddev_t *mddev)
+{
+        struct bitmap *bitmap = mddev->bitmap;
+        int sleep;
+
+        if (!bitmap) /* there was no bitmap */
+                return;
+
+        /* run the daemon_work three time to ensure everything is flushed
+         * that can be
+         */
+        sleep = bitmap->daemon_sleep;
+        bitmap->daemon_sleep = 0;
+        bitmap_daemon_work(bitmap);
+        bitmap_daemon_work(bitmap);
+        bitmap_daemon_work(bitmap);
+        bitmap->daemon_sleep = sleep;
+        bitmap_update_sb(bitmap);
+}
+
+/*
  * free memory that was allocated
  */
 void bitmap_destroy(mddev_t *mddev)