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

[Jan Kara <jack@xxxxxxx>]

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

Acked-by: Christoph Hellwig <hch@xxxxxx>
Reviewed-by: Christian Brauner <brauner@xxxxxxxxxx>
Signed-off-by: Jan Kara <jack@xxxxxxx>
---
 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 d5f5cd61efd7..5d356c964352 100644
--- a/block/ioctl.c
+++ b/block/ioctl.c
@@ -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;
 }
-- 
2.35.3