From: Christoph Hellwig <hch@infradead.org>
To: Xie Yongji <xieyongji@bytedance.com>
Cc: josef@toxicpanda.com, axboe@kernel.dk, bvanassche@acm.org,
linux-block@vger.kernel.org, nbd@other.debian.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH v2] nbd: Don't use workqueue to handle recv work
Date: Wed, 29 Dec 2021 09:35:49 -0800 [thread overview]
Message-ID: <Ycycda8w/zHWGw9c@infradead.org> (raw)
In-Reply-To: <20211227091241.103-1-xieyongji@bytedance.com>
On Mon, Dec 27, 2021 at 05:12:41PM +0800, Xie Yongji wrote:
> The rescuer thread might take over the works queued on
> the workqueue when the worker thread creation timed out.
> If this happens, we have no chance to create multiple
> recv threads which causes I/O hung on this nbd device.
If a workqueue is used there aren't really 'receive threads'.
What is the deadlock here?
next prev parent reply other threads:[~2021-12-29 17:35 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-12-27 9:12 Xie Yongji
2021-12-29 17:35 ` Christoph Hellwig [this message]
2021-12-30 4:01 ` Yongji Xie
2022-01-03 16:10 ` Josef Bacik
2022-01-04 5:31 ` Yongji Xie
2022-01-04 18:06 ` Josef Bacik
2022-01-05 5:36 ` Yongji Xie
2022-01-21 8:34 ` Yongji Xie
2022-02-15 13:17 ` Yongji Xie
2022-02-18 15:20 ` Josef Bacik
2022-02-19 13:04 ` Yongji Xie
2022-03-22 8:10 ` Yongji Xie
2022-03-22 20:11 ` Josef Bacik
2022-03-23 11:21 ` Yongji Xie
2022-05-16 6:13 ` Yongji Xie
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