drbd: Fixed state transitions after async outdate-peer-handler returned

Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>

diff --git a/drivers/block/drbd/drbd_nl.c b/drivers/block/drbd/drbd_nl.c
index 03b29f7..9dfe58a 100644 (file)
--- a/drivers/block/drbd/drbd_nl.c
+++ b/drivers/block/drbd/drbd_nl.c
@@ -272,9 +272,22 @@ static int _try_outdate_peer_async(void *data)
 {
        struct drbd_conf *mdev = (struct drbd_conf *)data;
        enum drbd_disk_state nps;
+       union drbd_state ns;
 
        nps = drbd_try_outdate_peer(mdev);
-       drbd_request_state(mdev, NS(pdsk, nps));
+
+       /* Not using
+          drbd_request_state(mdev, NS(pdsk, nps));
+          here, because we might were able to re-establish the connection in the
+          meantime.
+       */
+       spin_lock_irq(&mdev->req_lock);
+       ns = mdev->state;
+       if (ns.conn < C_WF_REPORT_PARAMS) {
+               ns.pdsk = nps;
+               _drbd_set_state(mdev, ns, CS_VERBOSE, NULL);
+       }
+       spin_unlock_irq(&mdev->req_lock);
 
        return 0;
 }