2619 asynchronous destruction of ZFS file systems
2747 SPA versioning with zfs feature flags
Reviewed by: Matt Ahrens <mahrens@delphix.com>
Reviewed by: George Wilson <gwilson@delphix.com>
Reviewed by: Richard Lowe <richlowe@richlowe.net>
Reviewed by: Dan Kruchinin <dan.kruchinin@gmail.com>
Approved by: Dan McDonald <danmcd@nexenta.com>

*** 18,27 ****
--- 18,28 ----
   *
   * CDDL HEADER END
   */
  /*
   * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
+  * Copyright (c) 2012 by Delphix. All rights reserved.
   */
  
  /*
   * This file contains the top half of the zfs directory structure
   * implementation. The bottom half is in zap_leaf.c.
*** 944,953 ****
--- 945,967 ----
  
  /*
   * Helper functions for consumers.
   */
  
+ uint64_t
+ zap_create_link(objset_t *os, dmu_object_type_t ot, uint64_t parent_obj,
+     const char *name, dmu_tx_t *tx)
+ {
+         uint64_t new_obj;
+ 
+         VERIFY((new_obj = zap_create(os, ot, DMU_OT_NONE, 0, tx)) > 0);
+         VERIFY(zap_add(os, parent_obj, name, sizeof (uint64_t), 1, &new_obj,
+             tx) == 0);
+ 
+         return (new_obj);
+ }
+ 
  int
  zap_value_search(objset_t *os, uint64_t zapobj, uint64_t value, uint64_t mask,
      char *name)
  {
          zap_cursor_t zc;