linux-kernel - Re: [PATCH 00/15] blkcg ref count refactor/cleanup + blkcg avg

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Message-ID: <20180901003510.GM1488037@devbig004.ftw2.facebook.com>
Date:   Fri, 31 Aug 2018 17:35:10 -0700
From:   Tejun Heo <tj@...nel.org>
To:     Dennis Zhou <dennisszhou@...il.com>
Cc:     Jens Axboe <axboe@...nel.dk>, Johannes Weiner <hannes@...xchg.org>,
        Josef Bacik <josef@...icpanda.com>, kernel-team@...com,
        linux-block@...r.kernel.org, cgroups@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 00/15] blkcg ref count refactor/cleanup + blkcg avg_lat

Hello,

On Thu, Aug 30, 2018 at 09:53:41PM -0400, Dennis Zhou wrote:
> This is a fairly lengthy patchset that aims to cleanup reference
> counting for blkcgs and blkgs. There are 4 problems that this patchset
> tries to address:
>   1. fix blkcg destruction
>   2. always associate a bio with a blkg
>   3. remove the extra css ref held by bios and utilize the blkg ref
>   4. add average latency tracking to blkcg core in io.stat.

1 is already merged.  Reviewed 2, 3 parts.  Generally looks great.
Let's try to address the found issues and get these two parts merged
first.

Thanks.

-- 
tejun