8115 parallel zfs mount

*** 9,18 ****
--- 9,19 ----
   * http://www.illumos.org/license/CDDL.
   */
  
  /*
   * Copyright 2013 Nexenta Systems, Inc.  All rights reserved.
+  * Copyright 2017 RackTop Systems.
   */
  
  /*
   * condvar(9f)
   */
*** 116,125 ****
--- 117,139 ----
  
          delta = abstime - ddi_get_lbolt();
          return (cv__twait(cv, mp, delta, 1));
  }
  
+ /*ARGSUSED*/
+ clock_t
+ cv_timedwait_hires(kcondvar_t *cv, kmutex_t *mp, hrtime_t tim, hrtime_t res,
+         int flag)
+ {
+         clock_t delta;
+ 
+         delta = tim;
+         if (flag & CALLOUT_FLAG_ABSOLUTE)
+                 delta -= gethrtime();
+         return (cv__twait(cv, mp, delta, 0));
+ }
+ 
  clock_t
  cv_reltimedwait(kcondvar_t *cv, kmutex_t *mp, clock_t delta, time_res_t res)
  {
          _NOTE(ARGUNUSED(res))