3749 zfs event processing should work on R/O root filesystems
Submitted by:   Justin Gibbs <justing@spectralogic.com>

@@ -236,10 +236,11 @@
         uint64_t        spa_deadman_calls;      /* number of deadman calls */
         uint64_t        spa_sync_starttime;     /* starting time fo spa_sync */
         uint64_t        spa_deadman_synctime;   /* deadman expiration timer */
         kmutex_t        spa_iokstat_lock;       /* protects spa_iokstat_* */
         struct kstat    *spa_iokstat;           /* kstat of io to this pool */
+        int64_t         spa_ccw_fail_time;      /* Conf cache write fail time */
         /*
          * spa_refcnt & spa_config_lock must be the last elements
          * because refcount_t changes size based on compilation options.
          * In order for the MDB module to function correctly, the other
          * fields must remain in the same location.