dbuf_prefetch_arg_t
dbuf_prefetch_fini(dbuf_prefetch_arg_t *dpa, boolean_t io_done)
dbuf_prefetch_arg_t *dpa = private;
dbuf_issue_final_prefetch(dbuf_prefetch_arg_t *dpa, blkptr_t *bp)
dbuf_prefetch_arg_t *dpa = private;
dbuf_prefetch_arg_t *dpa = kmem_zalloc(sizeof (*dpa), KM_SLEEP);