From: Jens Axboe <axboe@kernel.dk>
To: Muchun Song <songmuchun@bytedance.com>, viro@zeniv.linux.org.uk
Cc: linux-fsdevel@vger.kernel.org, linux-block@vger.kernel.org,
linux-kernel@vger.kernel.org, zhuyinyin@bytedance.com
Subject: Re: [PATCH v3 0/4] io_uring: Fix async workqueue is not canceled on some corner case
Date: Wed, 7 Oct 2020 09:34:39 -0600 [thread overview]
Message-ID: <e3333abd-6e06-60ee-a8f9-7b7c586484f0@kernel.dk> (raw)
In-Reply-To: <20201007031635.65295-1-songmuchun@bytedance.com>
On 10/6/20 9:16 PM, Muchun Song wrote:
> We should make sure that async workqueue is canceled on exit, but on
> some corner case, we found that the async workqueue is not canceled
> on exit in the linux-5.4. So we started an in-depth investigation.
> Fortunately, we finally found the problem. The commit:
>
> 1c4404efcf2c ("io_uring: make sure async workqueue is canceled on exit")
>
> did not completely solve this problem. This patch series to solve this
> problem completely. And there's no upstream variant of this commit, so
> this patch series is just fix the linux-5.4.y stable branch.
Thanks, I'll review/test these and pass them on if good.
--
Jens Axboe
prev parent reply other threads:[~2020-10-07 15:34 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-10-07 3:16 [PATCH v3 0/4] io_uring: Fix async workqueue is not canceled on some corner case Muchun Song
2020-10-07 3:16 ` [PATCH v3 1/4] io_uring: Fix resource leaking when kill the process Muchun Song
2020-10-07 3:16 ` [PATCH v3 2/4] io_uring: Fix missing smp_mb() in io_cancel_async_work() Muchun Song
2020-10-07 3:16 ` [PATCH v3 3/4] io_uring: Fix remove irrelevant req from the task_list Muchun Song
2020-10-07 3:16 ` [PATCH v3 4/4] io_uring: Fix double list add in io_queue_async_work() Muchun Song
2020-10-07 15:34 ` Jens Axboe [this message]
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