8115 parallel zfs mount

@@ -20,11 +20,11 @@
  */
 
 /*
  * Copyright (c) 1988, 2010, Oracle and/or its affiliates. All rights reserved.
  * Copyright 2016 Toomas Soome <tsoome@me.com>
- * Copyright (c) 2016 by Delphix. All rights reserved.
+ * Copyright (c) 2016, 2017 by Delphix. All rights reserved.
  * Copyright 2016 Nexenta Systems, Inc.
  */
 
 /*      Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T     */
 /*        All Rights Reserved   */

@@ -414,10 +414,11 @@
 #define VSW_VOLATILEDEV 0x10    /* vfs_dev can change each time fs is mounted */
 #define VSW_STATS       0x20    /* file system can collect stats */
 #define VSW_XID         0x40    /* file system supports extended ids */
 #define VSW_CANLOFI     0x80    /* file system supports lofi mounts */
 #define VSW_ZMOUNT      0x100   /* file system always allowed in a zone */
+#define VSW_MOUNTDEV    0x200   /* file system is mounted via device path */
 
 #define VSW_INSTALLED   0x8000  /* this vsw is associated with a file system */
 
 /*
  * A flag for vfs_setpath().