Re: [PATCH] nbd: Fix hung on disconnect request if socket is closed before
Ping.
On Wed, Mar 23, 2022 at 3:56 AM Josef Bacik <josef@toxicpanda.com> wrote:
>
> On Tue, Mar 22, 2022 at 04:06:39PM +0800, Xie Yongji wrote:
> > When userspace closes the socket before sending a disconnect
> > request, the following I/O requests will be blocked in
> > wait_for_reconnect() until dead timeout. This will cause the
> > following disconnect request also hung on blk_mq_quiesce_queue().
> > That means we have no way to disconnect a nbd device if there
> > are some I/O requests waiting for reconnecting until dead timeout.
> > It's not expected. So let's wake up the thread waiting for
> > reconnecting directly when a disconnect request is sent.
> >
> > Reported-by: Xu Jianhai <zero.xu@bytedance.com>
> > Signed-off-by: Xie Yongji <xieyongji@bytedance.com>
>
> Reviewed-by: Josef Bacik <josef@toxicpanda.com>
>
> Thanks,
>
> Josef
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