block: dasd_genhd: convert to blkdev_reread_part

Also remove the obsolete comment.

Reviewed-by: Christoph Hellwig <hch@lst.de>
Tested-by: Jarod Wilson <jarod@redhat.com>
Acked-by: Jarod Wilson <jarod@redhat.com>
Acked-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Ming Lei <ming.lei@canonical.com>
Signed-off-by: Jens Axboe <axboe@fb.com>

diff --git a/drivers/s390/block/dasd_genhd.c b/drivers/s390/block/dasd_genhd.c
index 90f39f7..2af4619 100644 (file)
--- a/drivers/s390/block/dasd_genhd.c
+++ b/drivers/s390/block/dasd_genhd.c
@@ -116,14 +116,11 @@ int dasd_scan_partitions(struct dasd_block *block)
                              rc);
                return -ENODEV;
        }
-       /*
-        * See fs/partition/check.c:register_disk,rescan_partitions
-        * Can't call rescan_partitions directly. Use ioctl.
-        */
-       rc = ioctl_by_bdev(bdev, BLKRRPART, 0);
+
+       rc = blkdev_reread_part(bdev);
        while (rc == -EBUSY && retry > 0) {
                schedule();
-               rc = ioctl_by_bdev(bdev, BLKRRPART, 0);
+               rc = blkdev_reread_part(bdev);
                retry--;
                DBF_DEV_EVENT(DBF_ERR, block->base,
                              "scan partitions error, retry %d rc %d",