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cgroup: use tsk->in_iowait instead of delayacct_is_task_waiting_on_io()

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If delayacct is disabled, then delayacct_is_task_waiting_on_io()
always returns false, which causes the statistical value to be
wrong. Perhaps tsk->in_iowait is better.

Signed-off-by: Chunguang Xu <brookxu@tencent.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
This commit is contained in:
Chunguang Xu 2021-04-13 09:39:05 +08:00 • committed by Tejun Heo
parent d95af61df0
commit ffeee417d9
1 changed files with 1 additions and 1 deletions
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2
kernel/cgroup/cgroup-v1.c
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@ -727,7 +727,7 @@ int cgroupstats_build(struct cgroupstats *stats, struct dentry *dentry)
stats->nr_stopped++;
break;
default:
if (delayacct_is_task_waiting_on_io(tsk))
if (tsk->in_iowait)
stats->nr_io_wait++;
break;
}