ocfs2/dlm: clear refmap bit of recovery lock while doing local recovery cleanup

When recovery master down, dlm_do_local_recovery_cleanup() only remove the $RECOVERY lock owned by dead node, but do not clear the refmap bit. Which will make umount thread falling in dead loop migrating $RECOVERY to the dead node.

---
 fs/ocfs2/dlm/dlmrecovery.c | 2 ++
 1 file changed, 2 insertions(+)

index 4c7b548..213279d 100644
@@ -2379,6 +2379,8 @@ static void dlm_do_local_recovery_cleanup(struct dlm_ctxt *dlm, u8 dead_node)
 						break;
 					}
 				}
+				dlm_lockres_clear_refmap_bit(dlm, res,
+						dead_node);
 				spin_unlock(&res->spinlock);
 				continue;
 			}

1.8.4.3