blk_mq_poll_stats_fn   44 block/blk-mq.c static void blk_mq_poll_stats_fn(struct blk_stat_callback *cb);
blk_mq_poll_stats_fn 2873 block/blk-mq.c 	q->poll_cb = blk_stat_alloc_callback(blk_mq_poll_stats_fn,