l2arc_write_callback_t
l2arc_write_callback_t *cb);
l2arc_write_callback_t *cb;
l2arc_write_callback_t *, cb);
kmem_free(cb, sizeof (l2arc_write_callback_t));
l2arc_write_callback_t *cb = NULL;
sizeof (l2arc_write_callback_t), KM_SLEEP);
l2arc_log_blk_commit(l2arc_dev_t *dev, zio_t *pio, l2arc_write_callback_t *cb)