On 9/5/20 5:25 AM, yangerkun wrote: > Blk-mq should call commit_rqs once 'bd.last != true' and no more > request will come(so virtscsi can kick the virtqueue, e.g.). We already > do that in 'blk_mq_dispatch_rq_list/blk_mq_try_issue_list_directly' while > list not empty and 'queued > 0'. However, we can seen the same scene > once the last request in list call queue_rq and return error like > BLK_STS_IOERR which will not requeue the request, and lead that list > empty but need call commit_rqs too(Or the request for virtscsi will stay > timeout until other request kick virtqueue). > > We found this problem by do fsstress test with offline/online virtscsi > device repeat quickly. Applied, thanks.-- Jens Axboe
