linux-kernel - Re: [PATCH V3 0/4] block: make loop block device cgroup aware

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Date:   Mon, 25 Sep 2017 09:44:03 -0700
From:   Shaohua Li <shli@...nel.org>
To:     linux-kernel@...r.kernel.org, linux-block@...r.kernel.org
Cc:     tj@...nel.org, lizefan@...wei.com, tglx@...utronix.de,
        kernel-team@...com, axboe@...nel.dk, Shaohua Li <shli@...com>
Subject: Re: [PATCH V3 0/4] block: make loop block device cgroup aware

On Thu, Sep 14, 2017 at 02:02:03PM -0700, Shaohua Li wrote:
> From: Shaohua Li <shli@...com>
> 
> Hi,
> 
> The IO dispatched to under layer disk by loop block device isn't cloned from
> original bio, so the IO loses cgroup information of original bio. These IO
> escapes from cgroup control. The patches try to address this issue. The idea is
> quite generic, but we currently only make it work for blkcg.

Ping! how do we proceed with this patch set?

Thanks,
Shaohua

> 
> Thanks,
> Shaohua
> 
> V2->V3:
> - Make the API more robust pointed out by Tejun
> 
> V1->V2:
> - Address a couple of issues pointed out by Tejun
> 
> 
> Shaohua Li (4):
>   kthread: add a mechanism to store cgroup info
>   blkcg: delete unused APIs
>   block: make blkcg aware of kthread stored original cgroup info
>   block/loop: make loop cgroup aware
> 
>  block/bio.c                | 31 ----------------------
>  drivers/block/loop.c       | 13 +++++++++
>  drivers/block/loop.h       |  1 +
>  include/linux/bio.h        |  2 --
>  include/linux/blk-cgroup.h | 25 +++++-------------
>  include/linux/kthread.h    | 11 ++++++++
>  kernel/kthread.c           | 66 ++++++++++++++++++++++++++++++++++++++++++++--
>  7 files changed, 96 insertions(+), 53 deletions(-)
> 
> -- 
> 2.9.5
>