linux-kernel - Re: [PATCH -next] blk-mq: fix potential io hang by wrong 'wake

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Message-ID: <a745facb-07de-3118-6fe3-08e68bc1224b@huaweicloud.com>
Date:   Sat, 10 Jun 2023 10:26:36 +0800
From:   Yu Kuai <yukuai1@...weicloud.com>
To:     Jens Axboe <axboe@...nel.dk>, Yu Kuai <yukuai1@...weicloud.com>,
        jack@...e.cz, andriy.shevchenko@...ux.intel.com,
        qiulaibin@...wei.com
Cc:     linux-block@...r.kernel.org, linux-kernel@...r.kernel.org,
        yi.zhang@...wei.com, yangerkun@...wei.com,
        "yukuai (C)" <yukuai3@...wei.com>
Subject: Re: [PATCH -next] blk-mq: fix potential io hang by wrong 'wake_batch'

Hi,

在 2023/06/10 1:41, Jens Axboe 写道:
>>>From a quick look, these are the only manipulators of active_queues.
> If we're under the tags lock, why do they still need to be atomics?
> 
Yes, 'active_queues' doesn't need to be atomic any more.

Thanks,
Kuai