On Fri, 2018-02-23 at 23:36 +0800, Ming Lei wrote: > When requeuing request, the domain token should have been freed > before re-inserting the request to io scheduler. Otherwise, the > assigned domain token will be leaked, and IO hang can be caused. Please consider to add a "Cc: stable" tag to this patch. Anyway: Reviewed-by: Bart Van Assche <bart.vanassche@xxxxxxx>