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block: pass a gendisk to bdev_add_partition

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bdev_add_partition can only operate on the whole device.  Make that clear
by passing a gendisk instead of a block_device.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/20210810154512.1809898-3-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Christoph Hellwig 2021-08-10 17:45:10 +02:00 committed by Jens Axboe
parent a08aa9bccd
commit 7f6be3765e
3 changed files with 6 additions and 6 deletions
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4
block/blk.h
View File

@ -347,8 +347,8 @@ void blk_free_ext_minor(unsigned int minor);
#define ADDPART_FLAG_NONE 0
#define ADDPART_FLAG_RAID 1
#define ADDPART_FLAG_WHOLEDISK 2
int bdev_add_partition(struct block_device *bdev, int partno,
sector_t start, sector_t length);
int bdev_add_partition(struct gendisk *disk, int partno, sector_t start,
sector_t length);
int bdev_del_partition(struct block_device *bdev, int partno);
int bdev_resize_partition(struct block_device *bdev, int partno,
sector_t start, sector_t length);

3
block/ioctl.c
View File

@ -16,6 +16,7 @@
static int blkpg_do_ioctl(struct block_device *bdev,
struct blkpg_partition __user *upart, int op)
{
struct gendisk *disk = bdev->bd_disk;
struct blkpg_partition p;
long long start, length;
@ -40,7 +41,7 @@ static int blkpg_do_ioctl(struct block_device *bdev,
/* check if partition is aligned to blocksize */
if (p.start & (bdev_logical_block_size(bdev) - 1))
return -EINVAL;
return bdev_add_partition(bdev, p.pno, start, length);
return bdev_add_partition(disk, p.pno, start, length);
case BLKPG_RESIZE_PARTITION:
return bdev_resize_partition(bdev, p.pno, start, length);
default:

5
block/partitions/core.c
View File

@ -451,11 +451,10 @@ static bool partition_overlaps(struct gendisk *disk, sector_t start,
return overlap;
}
int bdev_add_partition(struct block_device *bdev, int partno,
sector_t start, sector_t length)
int bdev_add_partition(struct gendisk *disk, int partno, sector_t start,
sector_t length)
{
struct block_device *part;
struct gendisk *disk = bdev->bd_disk;
int ret;
mutex_lock(&disk->open_mutex);