diff --git a/[refs] b/[refs]
index 80f7644f87a3..778fab4046b1 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 1a67dde0abba36421a1257d01ba9de2f6d1c160a
+refs/heads/master: 4d484a4a7a5126410eed5f8dd329a33f6eeed068
diff --git a/trunk/drivers/md/md.c b/trunk/drivers/md/md.c
index d18805fea111..103f2d33fa89 100644
--- a/trunk/drivers/md/md.c
+++ b/trunk/drivers/md/md.c
@@ -3599,6 +3599,7 @@ max_sync_store(mddev_t *mddev, const char *buf, size_t len)
 		if (max < mddev->resync_min)
 			return -EINVAL;
 		if (max < mddev->resync_max &&
+		    mddev->ro == 0 &&
 		    test_bit(MD_RECOVERY_RUNNING, &mddev->recovery))
 			return -EBUSY;