> switch (cmd) {
> case BLKRESETZONE:
> op = REQ_OP_ZONE_RESET;
> +
> + capacity = get_capacity(bdev->bd_disk);
> + if (zrange.sector + zrange.nr_sectors <= zrange.sector ||
> + zrange.sector + zrange.nr_sectors > capacity)
> + /* Out of range */
> + return -EINVAL;
> +
> + start = zrange.sector << SECTOR_SHIFT;
> + end = ((zrange.sector + zrange.nr_sectors) << SECTOR_SHIFT) - 1;
> +
> + /* Invalidate the page cache, including dirty pages. */
> + ret = truncate_bdev_range(bdev, mode, start, end);
> + if (ret)
> + return ret;
Can we factor this out into a truncate_zone_range() helper?
