Re: [PATCH 08/14] dasd: cleanup dasd_scan_partitions

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Am 21.09.20 um 09:19 schrieb Christoph Hellwig:
> Use blkdev_get_by_dev instead of bdget_disk + blkdev_get.
>
> Signed-off-by: Christoph Hellwig <hch@xxxxxx>

Beside what Sergei mentioned...

Reviewed-by: Stefan Haberland <sth@xxxxxxxxxxxxx>


> ---
>  drivers/s390/block/dasd_genhd.c | 15 ++++-----------
>  1 file changed, 4 insertions(+), 11 deletions(-)
>
> diff --git a/drivers/s390/block/dasd_genhd.c b/drivers/s390/block/dasd_genhd.c
> index af5b0ecb8f8923..a9698fba9b76ce 100644
> --- a/drivers/s390/block/dasd_genhd.c
> +++ b/drivers/s390/block/dasd_genhd.c
> @@ -101,18 +101,11 @@ int dasd_scan_partitions(struct dasd_block *block)
>  	struct block_device *bdev;
>  	int rc;
>  
> -	bdev = bdget_disk(block->gdp, 0);
> -	if (!bdev) {
> -		DBF_DEV_EVENT(DBF_ERR, block->base, "%s",
> -			      "scan partitions error, bdget returned NULL");
> -		return -ENODEV;
> -	}
> -
> -	rc = blkdev_get(bdev, FMODE_READ, NULL);
> -	if (rc < 0) {
> +	bdev = blkdev_get_by_dev(disk_devt(block->gdp), FMODE_READ, NULL);
> +	if (IS_ERR(bdev)) {
>  		DBF_DEV_EVENT(DBF_ERR, block->base,
> -			      "scan partitions error, blkdev_get returned %d",
> -			      rc);
> +			      "scan partitions error, blkdev_get returned %ld",
> +			      PTR_ERR(bdev));
>  		return -ENODEV;
>  	}
>  





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