OS-1566 dataset quota for ZFS datasets

*** 19,28 ****
--- 19,29 ----
   * CDDL HEADER END
   */
  
  /*
   * Copyright (c) 2012 by Delphix. All rights reserved.
+  * Copyright (c) 2012 Joyent, Inc. All rights reserved.
   */
  
  #ifdef _KERNEL
  #include <sys/systm.h>
  #else
*** 154,159 ****
--- 155,163 ----
              "com.delphix:async_destroy", "async_destroy",
              "Destroy filesystems asynchronously.", B_TRUE, B_FALSE, NULL);
          zfeature_register(SPA_FEATURE_EMPTY_BPOBJ,
              "com.delphix:empty_bpobj", "empty_bpobj",
              "Snapshots use less space.", B_TRUE, B_FALSE, NULL);
+         zfeature_register(SPA_FEATURE_DS_SS_QUOTA,
+             "com.joyent:ds_ss_quota", "dataset_quotas",
+             "Dataset and snapshot quotas.", B_TRUE, B_FALSE, NULL);
  }