5981 Deadlock in dmu_objset_find_dp

*** 68,77 ****
--- 68,78 ----
   */
  void rrw_init(rrwlock_t *rrl, boolean_t track_all);
  void rrw_destroy(rrwlock_t *rrl);
  void rrw_enter(rrwlock_t *rrl, krw_t rw, void *tag);
  void rrw_enter_read(rrwlock_t *rrl, void *tag);
+ void rrw_enter_read_prio(rrwlock_t *rrl, void *tag);
  void rrw_enter_write(rrwlock_t *rrl);
  void rrw_exit(rrwlock_t *rrl, void *tag);
  boolean_t rrw_held(rrwlock_t *rrl, krw_t rw);
  void rrw_tsd_destroy(void *arg);