On Mon, Jul 29, 2019 at 11:43 AM Dongsheng Yang
<dongsheng.yang@xxxxxxxxxxxx> wrote:
>
> Currently, if we share osdc in rbd device and journaling, they are
> sharing the notify_wq in osdc to complete watch_cb. When we
> need to close journal held with mutex of rbd device, we need
> to flush the notify_wq. But we don't want to flush the watch_cb
> of rbd_device, maybe some of it need to lock rbd mutex.
>
> To solve this problem, this patch allow user to manage the notify
> workqueue by themselves in watching.
What do you mean by "mutex of rbd device", rbd_dev->header_rwsem?
Did you actually encounter the resulting deadlock in testing?
Thanks,
Ilya
