linux-kernel - Re: [PATCH v9 0/4] blk-throttle bugfix

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Date:   Mon, 12 Sep 2022 14:13:59 +0800
From:   Yu Kuai <yukuai1@...weicloud.com>
To:     Yu Kuai <yukuai1@...weicloud.com>, axboe@...nel.dk, tj@...nel.org,
        mkoutny@...e.com, ming.lei@...hat.com
Cc:     linux-block@...r.kernel.org, linux-kernel@...r.kernel.org,
        cgroups@...r.kernel.org, yi.zhang@...wei.com,
        "yukuai (C)" <yukuai3@...wei.com>
Subject: Re: [PATCH v9 0/4] blk-throttle bugfix



在 2022/08/31 19:31, Yu Kuai 写道:
> Hi, Jens!
> 
> 在 2022/08/29 10:22, Yu Kuai 写道:
>> From: Yu Kuai <yukuai3@...wei.com>
>>
>> Changes in v9:
>>   - renaming the flag BIO_THROTTLED to BIO_BPS_THROTTLED, and always
>>   apply iops limit in path 1;
>>   - add tag for patch 4
>> Changes in v8:
>>   - use a new solution in patch 1
>>   - move cleanups to a separate patchset
>>   - rename bytes/io_skipped to carryover_bytes/ios in patch 4
>> Changes in v7:
>>   - add patch 5 to improve handling of re-entered bio for bps limit
>>   - as suggested by Tejun, add some comments
>>   - sdd some Acked tag by Tejun
>> Changes in v6:
>>   - rename parameter in patch 3
>>   - add comments and reviewed tag for patch 4
>> 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.
>>
>> 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/
>> v5: 
>> https://lore.kernel.org/all/20220528064330.3471000-1-yukuai3@huawei.com/
>> v6: 
>> https://lore.kernel.org/all/20220701093441.885741-1-yukuai1@huaweicloud.com/ 
>>
>> v7: 
>> https://lore.kernel.org/all/20220802140415.2960284-1-yukuai1@huaweicloud.com/ 
>>
>> v8: 
>> https://lore.kernel.org/all/20220823033130.874230-1-yukuai1@huaweicloud.com/ 
>>
>>
>> Yu Kuai (4):
>>    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 configuration updates
> 
> Can you apply this patchset now?

friendly ping...
> 
> Thanks,
> Kuai
>>
>>   block/bio.c               |   2 -
>>   block/blk-throttle.c      | 137 +++++++++++++++++++++++++-------------
>>   block/blk-throttle.h      |  11 ++-
>>   include/linux/bio.h       |   2 +-
>>   include/linux/blk_types.h |   2 +-
>>   5 files changed, 104 insertions(+), 50 deletions(-)
>>
> 
> .
>