8115 parallel zfs mount

*** 9,23 ****
--- 9,25 ----
   * http://www.illumos.org/license/CDDL.
   */
  
  /*
   * Copyright 2013 Nexenta Systems, Inc.  All rights reserved.
+  * Copyright 2017 RackTop Systems.
   */
  
  #include <sys/cmn_err.h>
  #include <sys/thread.h>
  #include <sys/zone.h>
+ #include <sys/proc.h>
  
  #define _SYNCH_H        /* keep out <synch.h> */
  #include <thread.h>
  
  /*
*** 120,125 ****
--- 122,152 ----
  void
  zthread_exit(void)
  {
          thread_exit();
          /* NOTREACHED */
+ }
+ 
+ void
+ tsd_create(uint_t *keyp, void (*destructor)(void *))
+ {
+         VERIFY0(thr_keycreate(keyp, destructor));
+ }
+ 
+ /*ARGSUSED*/
+ void
+ tsd_destroy(uint_t *keyp)
+ {}
+ 
+ void *
+ tsd_get(uint_t key)
+ {
+         void *value;
+ 
+         return (thr_getspecific(key, &value) ? NULL : value);
+ }
+ 
+ int
+ tsd_set(uint_t key, void *value)
+ {
+         return (thr_setspecific(key, value));
  }