On Tue, Jan 17, 2023 at 09:12:44AM +0100, Christoph Hellwig wrote:
> blk_throtl_stat_add is called from blk_stat_add explicitly, unlike the
> other stats that go through q->stats->callbacks. To prepare for cgroup
> data moving to the gendisk, ensure blk_throtl_stat_add is only called
> for the plain READ and WRITE commands that it actually handles internally,
> as blk_stat_add can also be called for passthrough commands on queues that
> do not have a genisk associated with them.
^^^^^^
gendisk
>
> Signed-off-by: Christoph Hellwig <hch@xxxxxx>
> ---
> block/blk-stat.c | 3 ++-
> 1 file changed, 2 insertions(+), 1 deletion(-)
Looks good to me. Feel free to add
Reviewed-by: Andreas Herrmann <aherrmann@xxxxxxx>
> diff --git a/block/blk-stat.c b/block/blk-stat.c
> index 2ea01b5c1aca04..c6ca16abf911e2 100644
> --- a/block/blk-stat.c
> +++ b/block/blk-stat.c
> @@ -58,7 +58,8 @@ void blk_stat_add(struct request *rq, u64 now)
>
> value = (now >= rq->io_start_time_ns) ? now - rq->io_start_time_ns : 0;
>
> - blk_throtl_stat_add(rq, value);
> + if (req_op(rq) == REQ_OP_READ || req_op(rq) == REQ_OP_WRITE)
> + blk_throtl_stat_add(rq, value);
>
> rcu_read_lock();
> cpu = get_cpu();
> --
> 2.39.0
>
--
Regards,
Andreas
SUSE Software Solutions Germany GmbH
Frankenstrasse 146, 90461 Nürnberg, Germany
GF: Ivo Totev, Andrew Myers, Andrew McDonald, Martje Boudien Moerman
(HRB 36809, AG Nürnberg)
