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SubjectRe: [PATCH 5/6] blk-cgroup: reimplement basic IO stats using cgroup rstat
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Hi Tejun,

On 13/11/2019 16:35, Tejun Heo wrote:
> Hello,
>
> Can you please see whether the following patch fixes the issue?
>

This patch does fix the issue for me.


Thanks,
Ionela.

> Thanks.
>
> diff --git a/include/linux/blk-cgroup.h b/include/linux/blk-cgroup.h
> index 48a66738143d..19394c77ed99 100644
> --- a/include/linux/blk-cgroup.h
> +++ b/include/linux/blk-cgroup.h
> @@ -626,7 +626,8 @@ static inline bool blkcg_bio_issue_check(struct request_queue *q,
> bis->cur.ios[rwd]++;
>
> u64_stats_update_end(&bis->sync);
> - cgroup_rstat_updated(blkg->blkcg->css.cgroup, cpu);
> + if (cgroup_subsys_on_dfl(io_cgrp_subsys))
> + cgroup_rstat_updated(blkg->blkcg->css.cgroup, cpu);
> put_cpu();
> }
>
>

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