Messages in this thread Patch in this message | | | Date | Wed, 13 Nov 2019 08:35:01 -0800 | From | Tejun Heo <> | Subject | Re: [PATCH 5/6] blk-cgroup: reimplement basic IO stats using cgroup rstat |
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Hello,
Can you please see whether the following patch fixes the issue?
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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