diff --git a/[refs] b/[refs]
index 29a6ff942b4f..9f38e0afd8e5 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: e636db5b956950b8b9bfbeb766a637f84bae1e3b
+refs/heads/master: 873b0d5f98ab70e4df7a62b2ef0305373f88f330
diff --git a/trunk/drivers/block/drbd/drbd_nl.c b/trunk/drivers/block/drbd/drbd_nl.c
index bc0bcb964603..87aaa7fc4d27 100644
--- a/trunk/drivers/block/drbd/drbd_nl.c
+++ b/trunk/drivers/block/drbd/drbd_nl.c
@@ -2106,6 +2106,11 @@ static int drbd_nl_start_ov(struct drbd_conf *mdev, struct drbd_nl_cfg_req *nlp,
 		reply->ret_code = ERR_MANDATORY_TAG;
 		return 0;
 	}
+
+	/* If there is still bitmap IO pending, e.g. previous resync or verify
+	 * just being finished, wait for it before requesting a new resync. */
+	wait_event(mdev->misc_wait, !test_bit(BITMAP_IO, &mdev->flags));
+
 	/* w_make_ov_request expects position to be aligned */
 	mdev->ov_start_sector = args.start_sector & ~BM_SECT_PER_BIT;
 	reply->ret_code = drbd_request_state(mdev,NS(conn,C_VERIFY_S));