From: Tejun Heo <tj@kernel.org>
To: Shaohua Li <shli@kernel.org>
Cc: linux-block@vger.kernel.org, vgoyal@redhat.com, axboe@kernel.dk,
Kernel-team@fb.com, Shaohua Li <shli@fb.com>
Subject: Re: [RFC 1/2] block: record blkcss in request
Date: Wed, 4 Oct 2017 11:05:30 -0700 [thread overview]
Message-ID: <20171004180530.GR3301751@devbig577.frc2.facebook.com> (raw)
In-Reply-To: <20171004180246.rmih3yjjwknzm44r@kernel.org>
On Wed, Oct 04, 2017 at 11:02:46AM -0700, Shaohua Li wrote:
> > Each request comes from cgroup specific request_list, so given a
> > request, its blkcg membership can is accessible through
> >
> > request->rl->blkg->blkcg
>
> Nice. Seems only used for legacy queue though.
Ah, you're right. rl isn't used for mq at all, so yeah, we probably
should propagate the association through rq.
Thanks.
--
tejun
next prev parent reply other threads:[~2017-10-04 18:05 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-10-04 17:41 [RFC 0/2] block: export latency info for cgroups Shaohua Li
2017-10-04 17:41 ` [RFC 1/2] block: record blkcss in request Shaohua Li
2017-10-04 17:51 ` Tejun Heo
2017-10-04 18:02 ` Shaohua Li
2017-10-04 18:05 ` Tejun Heo [this message]
2017-10-04 17:41 ` [RFC 2/2] blockcg: export latency info for each cgroup Shaohua Li
2017-10-04 18:04 ` Tejun Heo
2017-10-05 16:45 ` Shaohua Li
2017-10-05 17:25 ` Tejun Heo
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