block: pass a gendisk to bdev_resize_partition

bdev_resize_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/20210810154512.1809898-5-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>

diff --git a/block/blk.h b/block/blk.h
index 21c441e..db6f82b 100644 (file)
--- a/block/blk.h
+++ b/block/blk.h
@@ -350,8 +350,8 @@ void blk_free_ext_minor(unsigned int minor);
 int bdev_add_partition(struct gendisk *disk, int partno, sector_t start,
                sector_t length);
 int bdev_del_partition(struct gendisk *disk, int partno);
-int bdev_resize_partition(struct block_device *bdev, int partno,
-               sector_t start, sector_t length);
+int bdev_resize_partition(struct gendisk *disk, int partno, sector_t start,
+               sector_t length);
 
 int bio_add_hw_page(struct request_queue *q, struct bio *bio,
                struct page *page, unsigned int len, unsigned int offset,

diff --git a/block/ioctl.c b/block/ioctl.c
index 8f57b27..eb0491e 100644 (file)
--- a/block/ioctl.c
+++ b/block/ioctl.c
@@ -43,7 +43,7 @@ static int blkpg_do_ioctl(struct block_device *bdev,
                        return -EINVAL;
                return bdev_add_partition(disk, p.pno, start, length);
        case BLKPG_RESIZE_PARTITION:
-               return bdev_resize_partition(bdev, p.pno, start, length);
+               return bdev_resize_partition(disk, p.pno, start, length);
        default:
                return -EINVAL;
        }

diff --git a/block/partitions/core.c b/block/partitions/core.c
index 8c7abf0..9265936 100644 (file)
--- a/block/partitions/core.c
+++ b/block/partitions/core.c
@@ -497,14 +497,14 @@ out_unlock:
        return ret;
 }
 
-int bdev_resize_partition(struct block_device *bdev, int partno,
-               sector_t start, sector_t length)
+int bdev_resize_partition(struct gendisk *disk, int partno, sector_t start,
+               sector_t length)
 {
        struct block_device *part = NULL;
        int ret = -ENXIO;
 
-       mutex_lock(&bdev->bd_disk->open_mutex);
-       part = xa_load(&bdev->bd_disk->part_tbl, partno);
+       mutex_lock(&disk->open_mutex);
+       part = xa_load(&disk->part_tbl, partno);
        if (!part)
                goto out_unlock;
 
@@ -513,14 +513,14 @@ int bdev_resize_partition(struct block_device *bdev, int partno,
                goto out_unlock;
 
        ret = -EBUSY;
-       if (partition_overlaps(bdev->bd_disk, start, length, partno))
+       if (partition_overlaps(disk, start, length, partno))
                goto out_unlock;
 
        bdev_set_nr_sectors(part, length);
 
        ret = 0;
 out_unlock:
-       mutex_unlock(&bdev->bd_disk->open_mutex);
+       mutex_unlock(&disk->open_mutex);
        return ret;
 }