On 9/1/20 4:07 AM, Ming Lei wrote:
> Commit e8c7d14ac6c3 ("block: revert back to synchronous request_queue removal")
> stops to release request queue from wq context because that commit
> supposed all blk_put_queue() is called in context which is allowed
> to sleep. However, this assumption isn't true because we release disk's
> reference in partition's percpu_ref's ->release() which doesn't allow
> to sleep, because the ->release() is run via call_rcu().
>
> Fixes this issue by moving put disk reference into hd_struct_free_work()
Applied, thanks Ming.
--
Jens Axboe
