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Subject: Re: [PATCH -next v5 0/8] bugfix and cleanup for blk-throttle
To:     <tj@kernel.org>, <mkoutny@suse.com>, <axboe@kernel.dk>,
        <ming.lei@redhat.com>
CC:     <cgroups@vger.kernel.org>, <linux-block@vger.kernel.org>,
        <linux-kernel@vger.kernel.org>, <yi.zhang@huawei.com>
References: <20220528064330.3471000-1-yukuai3@huawei.com>
From:   Yu Kuai <yukuai3@huawei.com>
Message-ID: <244865d4-e7e7-432f-8e9c-248ab900d283@huawei.com>
Date:   Thu, 2 Jun 2022 19:14:36 +0800
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?? 2022/05/28 14:43, Yu Kuai д??:
> Changes in v5:
>   - add comments in patch 4
>   - clear bytes/io_skipped in throtl_start_new_slice_with_credit() in
>   patch 4
>   - and cleanup patches 5-8
> Changes in v4:
>   - add reviewed-by tag for patch 1
>   - add patch 2,3
>   - use a different way to fix io hung in patch 4
> Changes in v3:
>   - fix a check in patch 1
>   - fix link err in patch 2 on 32-bit platform
>   - handle overflow in patch 2
> Changes in v2:
>   - use a new solution suggested by Ming
>   - change the title of patch 1
>   - add patch 2
> 
> Patch 1 fix that blk-throttle can't work if multiple bios are throttle,
> Patch 2 fix overflow while calculating wait time
> Patch 3,4 fix io hung due to configuration updates.
> Patch 5-8 are cleanup patches, there are no functional changes, just
> some places that I think can be optimized during code review.

friendly ping ...
> 
> Previous version:
> v1: https://lore.kernel.org/all/20220517134909.2910251-1-yukuai3@huawei.com/
> v2: https://lore.kernel.org/all/20220518072751.1188163-1-yukuai3@huawei.com/
> v3: https://lore.kernel.org/all/20220519085811.879097-1-yukuai3@huawei.com/
> v4: https://lore.kernel.org/all/20220523082633.2324980-1-yukuai3@huawei.com/
> 
> Yu Kuai (8):
>    blk-throttle: fix that io throttle can only work for single bio
>    blk-throttle: prevent overflow while calculating wait time
>    blk-throttle: factor out code to calculate ios/bytes_allowed
>    blk-throttle: fix io hung due to config updates
>    blk-throttle: use 'READ/WRITE' instead of '0/1'
>    blk-throttle: calling throtl_dequeue/enqueue_tg in pairs
>    blk-throttle: cleanup tg_update_disptime()
>    blk-throttle: clean up flag 'THROTL_TG_PENDING'
> 
>   block/blk-throttle.c | 158 +++++++++++++++++++++++++++++--------------
>   block/blk-throttle.h |  16 +++--
>   2 files changed, 120 insertions(+), 54 deletions(-)
>