Re: [PATCH RFC v3 02/15] block: add QUEUE_FLAG_BIO_ISSUE

[Yu Kuai]

Hi,

在 2025/9/3 21:24, Christoph Hellwig 写道:
> 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.
ok, will change to disk, and also change set/clear the flag to
enable/disable iolatency.

Thanks,
Kuai