linux-kernel - Re: [PATCH v5 0/2] cancel all throttled bios in del

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Message-ID: <ca8d39fc-48d3-cfd9-3fa4-a329bb37b91b@huawei.com>
Date:   Sat, 18 Dec 2021 17:09:03 +0800
From:   "yukuai (C)" <yukuai3@...wei.com>
To:     <tj@...nel.org>, <mkoutny@...e.com>, <hch@...radead.org>,
        <axboe@...nel.dk>
CC:     <cgroups@...r.kernel.org>, <linux-block@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <yi.zhang@...wei.com>
Subject: Re: [PATCH v5 0/2] cancel all throttled bios in del_gendisk()

在 2021/12/10 16:31, Yu Kuai 写道:
> If del_gendisk() is done when some io are still throttled, such io
> will not be handled until the throttle is done, which is not
> necessary.
> 
> Changes in v2:
>   - move WARN_ON_ONCE() from throtl_rb_first() to it's caller
>   - merge some patches into one.
> 
> Changes in v3:
>   - some code optimization in patch 1
>   - hold queue lock to cancel bios in patch 2
> 
> Changes in v4:
>   - delete rcu_read_lock() and rcu_read_unlock() in patch 2
> 
> Changes in v5:
>   - add comment about rcu lock
Friendly ping...
> 
> Yu Kuai (2):
>    blk-throtl: move WARN_ON_ONCE() from throtl_rb_first() to it's caller
>    block: cancel all throttled bios in del_gendisk()
> 
>   block/blk-throttle.c | 75 ++++++++++++++++++++++++++++++++++++++++++--
>   block/blk-throttle.h |  2 ++
>   block/genhd.c        |  2 ++
>   3 files changed, 76 insertions(+), 3 deletions(-)
>