On 2020-05-17 18:12, Damien Le Moal wrote: > On 2020/05/16 9:19, Bart Van Assche wrote: >> +static void nullb_zero_rq_data_buffer(const struct request *rq) >> +{ >> + struct req_iterator iter; >> + struct bio_vec bvec; >> + >> + rq_for_each_bvec(bvec, rq, iter) >> + zero_fill_bvec(&bvec); >> +} >> + >> +static void nullb_zero_read_cmd_buffer(struct nullb_cmd *cmd) >> +{ >> + struct nullb_device *dev = cmd->nq->dev; >> + >> + if (dev->queue_mode == NULL_Q_BIO && bio_op(cmd->bio) == REQ_OP_READ) >> + zero_fill_bio(cmd->bio); >> + else if (req_op(cmd->rq) == REQ_OP_READ) >> + nullb_zero_rq_data_buffer(cmd->rq); >> +} > > Shouldn't the definition of these two functions be under a "#ifdef CONFIG_KMSAN" ? Hi Damien, It is on purpose that I used IS_ENABLED(CONFIG_KMSAN) below instead of #ifdef CONFIG_KMSAN. CONFIG_KMSAN is not yet upstream and I want to expose the above code to the build robot. Thanks, Bart.