part_stat_show   1192 block/genhd.c  static DEVICE_ATTR(stat, 0444, part_stat_show, NULL);
part_stat_show    189 block/partition-generic.c static DEVICE_ATTR(stat, 0444, part_stat_show, NULL);
part_stat_show    649 include/linux/genhd.h extern ssize_t part_stat_show(struct device *dev,