On Mon, 2017-04-10 at 09:54 -0600, Jens Axboe wrote: > void blk_mq_stop_hw_queue(struct blk_mq_hw_ctx *hctx) > { > - cancel_work(&hctx->run_work); > + cancel_delayed_work(&hctx->run_work); > cancel_delayed_work(&hctx->delay_work); > set_bit(BLK_MQ_S_STOPPED, &hctx->state); > } Hello Jens, I would like to change the above cancel_*work() calls into cancel_*work_sync() calls because this code is used when e.g. switching between I/O schedulers and no .queue_rq() calls must be ongoing while switching between schedulers. Do you want to integrate that change into this patch or do you want me to post a separate patch? In the latter case, should I start from your for-next branch to develop that patch or from your for-next branch + this patch series? Thanks, Bart.