linux-kernel - Re: [PATCH v2 0/8] md: fix and refactor io accounting and 'active

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Date:   Wed, 21 Jun 2023 16:11:06 -0700
From:   Song Liu <song@...nel.org>
To:     Yu Kuai <yukuai1@...weicloud.com>
Cc:     xni@...hat.com, pmenzel@...gen.mpg.de, linux-raid@...r.kernel.org,
        linux-kernel@...r.kernel.org, yukuai3@...wei.com,
        yi.zhang@...wei.com, yangerkun@...wei.com
Subject: Re: [PATCH v2 0/8] md: fix and refactor io accounting and 'active_io'

On Wed, Jun 21, 2023 at 1:52 AM Yu Kuai <yukuai1@...weicloud.com> wrote:
>
> From: Yu Kuai <yukuai3@...wei.com>
>
> Changes in v2:
>  - fix some typos;
>  - add review tag;
>
> This patchset do following things:
>  - make io accounting for all raid levels consistent, patch 1, 3-5;
>  - enable io accounting for all raid levels, patch 6-8;
>  - hold 'active_io' before io start to dispatch, and release 'active_io'
>  when io is done, make mddev_suspend() will wait for io to be done, patch 2
>
> This patch set also prepare to synchronize io and raid configuration, make
> it possible to use 'active_io' in common layer to judge if normal io is
> in flight.
>
> Yu Kuai (8):
>   md: move initialization and destruction of 'io_acct_set' to md.c
>   md: also clone new io if io accounting is disabled
>   raid5: fix missing io accounting in raid5_align_endio()
>   md/raid1: switch to use md_account_bio() for io accounting
>   md/raid10: switch to use md_account_bio() for io accounting
>   md/md-multipath: enable io accounting
>   md/md-linear: enable io accounting
>   md/md-faulty: enable io accounting

Applied to md-next.

Thanks,
Song

>
>  drivers/md/md-faulty.c    |  2 +
>  drivers/md/md-linear.c    |  1 +
>  drivers/md/md-multipath.c |  1 +
>  drivers/md/md.c           | 78 +++++++++++++++++++--------------------
>  drivers/md/md.h           |  6 +--
>  drivers/md/raid0.c        | 16 +-------
>  drivers/md/raid1.c        | 14 +++----
>  drivers/md/raid1.h        |  1 -
>  drivers/md/raid10.c       | 20 +++++-----
>  drivers/md/raid10.h       |  1 -
>  drivers/md/raid5.c        | 70 ++++++++++-------------------------
>  11 files changed, 79 insertions(+), 131 deletions(-)
>
> --
> 2.39.2
>