[PATCH] md: make sure md bitmap updates are flushed when array is stopped.
[linux-2.6.git] / drivers / md / bitmap.c
index 09d32db..41df4cd 100644 (file)
@@ -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)