glock_workqueue = alloc_workqueue("glock_workqueue", WQ_MEM_RECLAIM |
                                          WQ_HIGHPRI | WQ_FREEZABLE, 0);
-       if (IS_ERR(glock_workqueue))
-               return PTR_ERR(glock_workqueue);
+       if (!glock_workqueue)
+               return -ENOMEM;
        gfs2_delete_workqueue = alloc_workqueue("delete_workqueue",
                                                WQ_MEM_RECLAIM | WQ_FREEZABLE,
                                                0);
-       if (IS_ERR(gfs2_delete_workqueue)) {
+       if (!gfs2_delete_workqueue) {
                destroy_workqueue(glock_workqueue);
-               return PTR_ERR(gfs2_delete_workqueue);
+               return -ENOMEM;
        }
 
        register_shrinker(&glock_shrinker);