[PATCH 03/29] block: Use bdev_open_by_dev() in disk_scan_partitions() and blkdev_bszset()

Jan Kara
2023-08-23T10:49:29Z

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

Acked-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jan Kara <jack@suse.cz>
---
block/genhd.c | 12 ++++++------
block/ioctl.c | 6 ++++--
2 files changed, 10 insertions(+), 8 deletions(-)

diff --git a/block/genhd.c b/block/genhd.c
index cc32a0c704eb..4a16a424f57d 100644
--- a/block/genhd.c
+++ b/block/genhd.c
@@ -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,
diff --git a/block/ioctl.c b/block/ioctl.c
index 54c1e2f71031..2e46dc38424c 100644
--- a/block/ioctl.c
+++ b/block/ioctl.c
@@ -465,6 +465,7 @@ 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;
@@ -476,10 +477,11 @@ 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;
}
--
2.35.3