On 3/19/19 9:05 AM, Dongli Zhang wrote: > There is no usage of 'nr_expired'. > > The 'nr_expired' was introduced by commit 1d9bd5161ba3 ("blk-mq: replace > timeout synchronization with a RCU and generation based scheme"). Its usage > was removed since commit 12f5b9314545 ("blk-mq: Remove generation > seqeunce"). Thanks, applied. -- Jens Axboe