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block: Use bdev_open_by_dev() in disk_scan_partitions() and blkdev_bszset()

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Convert disk_scan_partitions() and blkdev_bszset() to use
bdev_open_by_dev().

Acked-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Christian Brauner <brauner@kernel.org>
Signed-off-by: Jan Kara <jack@suse.cz>
Link: https://lore.kernel.org/r/20230927093442.25915-3-jack@suse.cz
Signed-off-by: Christian Brauner <brauner@kernel.org>
This commit is contained in:
Jan Kara 2023-09-27 11:34:09 +02:00 committed by Christian Brauner
parent 841dd789b8
commit acb083b555
No known key found for this signature in database
GPG Key ID: 91C61BC06578DCA2
2 changed files with 10 additions and 8 deletions
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12
block/genhd.c
View File

@ -342,7 +342,7 @@ EXPORT_SYMBOL_GPL(disk_uevent);
int disk_scan_partitions(struct gendisk *disk, blk_mode_t mode)
{
struct block_device *bdev;
struct bdev_handle *handle;
int ret = 0;
if (disk->flags & (GENHD_FL_NO_PART | GENHD_FL_HIDDEN))
@ -366,12 +366,12 @@ int disk_scan_partitions(struct gendisk *disk, blk_mode_t mode)
}
set_bit(GD_NEED_PART_SCAN, &disk->state);
bdev = blkdev_get_by_dev(disk_devt(disk), mode & ~BLK_OPEN_EXCL, NULL,
NULL);
if (IS_ERR(bdev))
ret = PTR_ERR(bdev);
handle = bdev_open_by_dev(disk_devt(disk), mode & ~BLK_OPEN_EXCL, NULL,
NULL);
if (IS_ERR(handle))
ret = PTR_ERR(handle);
else
blkdev_put(bdev, NULL);
bdev_release(handle);
/*
* If blkdev_get_by_dev() failed early, GD_NEED_PART_SCAN is still set,

6
block/ioctl.c
View File

@ -467,6 +467,7 @@ static int blkdev_bszset(struct block_device *bdev, blk_mode_t mode,
int __user *argp)
{
int ret, n;
struct bdev_handle *handle;
if (!capable(CAP_SYS_ADMIN))
return -EACCES;
@ -478,10 +479,11 @@ static int blkdev_bszset(struct block_device *bdev, blk_mode_t mode,
if (mode & BLK_OPEN_EXCL)
return set_blocksize(bdev, n);
if (IS_ERR(blkdev_get_by_dev(bdev->bd_dev, mode, &bdev, NULL)))
handle = bdev_open_by_dev(bdev->bd_dev, mode, &bdev, NULL);
if (IS_ERR(handle))
return -EBUSY;
ret = set_blocksize(bdev, n);
blkdev_put(bdev, &bdev);
bdev_release(handle);
return ret;
}