rescan_partitions  174 block/ioctl.c  	return rescan_partitions(disk, bdev);
rescan_partitions 1518 fs/block_dev.c 			rescan_partitions(bdev->bd_disk, bdev);
rescan_partitions  625 include/linux/genhd.h extern int rescan_partitions(struct gendisk *disk, struct block_device *bdev);