8115 parallel zfs mount

@@ -22,10 +22,11 @@
 /*
  * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
  * Copyright (c) 2011, 2016 by Delphix. All rights reserved.
  * Copyright (c) 2014 Integros [integros.com]
  * Copyright 2017 Nexenta Systems, Inc.
+ * Copyright 2017 RackTop Systems.
  */
 
 #include <stdio.h>
 #include <unistd.h>
 #include <stdio_ext.h>

@@ -92,10 +93,11 @@
 int zfs_vdev_async_read_max_active;
 #endif
 
 static const char cmdname[] = "zdb";
 uint8_t dump_opt[256];
+extern int aok;
 
 typedef void object_viewer_t(objset_t *, uint64_t, void *data, size_t size);
 
 uint64_t *zopt_object = NULL;
 static unsigned zopt_objects = 0;