[PATCH V2 1/5] block: introduce blk_quiesce_timeout() and blk_unquiesce_timeout()

[jianchao.wang]

Hi Ming

On 05/02/2018 11:33 AM, Ming Lei wrote:
> No, there isn't such race, the 'mod_timer' doesn't make a difference
> because 'q->timeout_off' will be visible in new work func after
> cancel_work_sync() returns. So even the timer is expired, work func
> still returns immediately.

Yes, you are right.
even if timer is setup , but the timeout work will return.

Thanks
Jianchao