> +static ssize_t io_latency_show(struct device *dev, struct device_attribute *attr, char *buf) > +{ > + struct block_device *bdev = dev_to_bdev(dev); > + size_t count = 0; > + int i, sgrp; > + > + for (i = 0; i < ADD_STAT_NUM; i++) { > + unsigned int from, to; > + > + if (i == ADD_STAT_NUM - 1) { > + count += scnprintf(buf + count, PAGE_SIZE - count, " >= %5d ms: ", Please fix your overly long lines all over this code.