On Mon, Sep 01, 2025 at 11:32:07AM +0800, Yu Kuai wrote:
>  static inline void blkcg_bio_issue_init(struct bio *bio)
>  {
> -	bio->issue_time_ns = blk_time_get_ns();
> +	struct request_queue *q = bdev_get_queue(bio->bi_bdev);
> +
> +	if (test_bit(QUEUE_FLAG_BIO_ISSUE, &q->queue_flags))
> +		bio->issue_time_ns = blk_time_get_ns();
>  }

Given that this is called on a bio and called from generic code
and not blk-mq, the flag should in the gendisk and not the queue.