# \[PATCH 15/30\] hfs: use bdev\_nr\_sectors instead of open coding it

- From: Christoph Hellwig \<hch@lst.de\>
- Date: 2021-10-18 10:13:34 
- List: linux-bcache
- Page: https://ratatoskr.run/linux-bcache/2021/10/216211
- Thread: https://ratatoskr.run/linux-block/2021/10/216197/t.md

```text
Use the proper helper to read the block device size.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Kees Cook <redacted>
---
 fs/hfs/mdb.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/hfs/mdb.c b/fs/hfs/mdb.c
index cdf0edeeb2781..5beb826524354 100644
--- a/fs/hfs/mdb.c
+++ b/fs/hfs/mdb.c
@@ -36,7 +36,7 @@ static int hfs_get_last_session(struct super_block *sb,
 
 	/* default values */
 	*start = 0;
-	*size = i_size_read(sb->s_bdev->bd_inode) >> 9;
+	*size = bdev_nr_sectors(sb->s_bdev);
 
 	if (HFS_SB(sb)->session >= 0) {
 		struct cdrom_tocentry te;
-- 
2.30.2

```