spa_stats_t spa_stats; /* assorted spa statistics */
hrtime_t spa_ccw_fail_time; /* Conf cache write fail time */
taskq_t *spa_zvol_taskq; /* Taskq for minor management */
+ taskq_t *spa_prefetch_taskq; /* Taskq for prefetch threads */
uint64_t spa_multihost; /* multihost aware (mmp) */
mmp_thread_t spa_mmp; /* multihost mmp thread */