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Date:   Fri, 31 Aug 2018 11:46:21 -0400
From:   Josef Bacik <>
To:     Dennis Zhou <>
Cc:     Jens Axboe <>, Tejun Heo <>,
        Johannes Weiner <>,
        Josef Bacik <>,,,,
Subject: Re: [PATCH 10/15] blkcg: remove bio->bi_css and instead use

On Thu, Aug 30, 2018 at 09:53:51PM -0400, Dennis Zhou wrote:
> From: "Dennis Zhou (Facebook)" <>
> Prior patches ensured that all bios are now associated with some blkg.
> This now makes bio->bi_css unnecessary as blkg maintains a reference to
> the blkcg already.
> This patch removes the field bi_css and transfers corresponding uses to
> access via bi_blkg.
> Signed-off-by: Dennis Zhou <>

Reviewed-by: Josef Bacik <>



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