diff --git a/[refs] b/[refs]
index d88e77e228d1..9d1b9c80261c 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 31a59e3425d32743738e043c1df1668e0f22bbab
+refs/heads/master: 648b629ed406233b0a607a3cf29d8a169876131f
diff --git a/trunk/drivers/md/md.c b/trunk/drivers/md/md.c
index ff9fef389608..32b2ad88a2f9 100644
--- a/trunk/drivers/md/md.c
+++ b/trunk/drivers/md/md.c
@@ -2594,15 +2594,20 @@ array_state_store(mddev_t *mddev, const char *buf, size_t len)
 			err = do_md_stop(mddev, 1);
 		else {
 			mddev->ro = 1;
+			set_disk_ro(mddev->gendisk, 1);
 			err = do_md_run(mddev);
 		}
 		break;
 	case read_auto:
-		/* stopping an active array */
 		if (mddev->pers) {
-			err = do_md_stop(mddev, 1);
-			if (err == 0)
-				mddev->ro = 2; /* FIXME mark devices writable */
+			if (mddev->ro != 1)
+				err = do_md_stop(mddev, 1);
+			else
+				err = restart_array(mddev);
+			if (err == 0) {
+				mddev->ro = 2;
+				set_disk_ro(mddev->gendisk, 0);
+			}
 		} else {
 			mddev->ro = 2;
 			err = do_md_run(mddev);
@@ -2640,6 +2645,7 @@ array_state_store(mddev_t *mddev, const char *buf, size_t len)
 			err = 0;
 		} else {
 			mddev->ro = 0;
+			set_disk_ro(mddev->gendisk, 0);
 			err = do_md_run(mddev);
 		}
 		break;