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

@@ -240,10 +240,11 @@
         zrlock_t dnh_zrlock;
         dnode_t *dnh_dnode;
 } dnode_handle_t;
 
 typedef struct dnode_children {
+        dmu_buf_user_t db_evict;        /* User evict data */
         size_t dnc_count;               /* number of children */
         dnode_handle_t dnc_children[1]; /* sized dynamically */
 } dnode_children_t;
 
 typedef struct free_range {