3752 want more verifiable dbuf user eviction
Submitted by:   Justin Gibbs <justing@spectralogic.com>
Submitted by:   Will Andrews <willa@spectralogic.com>

*** 207,216 ****
--- 207,217 ----
   *
   * This needs to be kept as small as possible.
   */
  
  struct sa_handle {
+         dmu_buf_user_t  db_evict;
          kmutex_t        sa_lock;
          dmu_buf_t       *sa_bonus;
          dmu_buf_t       *sa_spill;
          objset_t        *sa_os;
          void            *sa_userp;