# Re: \[PATCH 04/29\] md: use bdev\_nr\_sectors instead of open coding it

- From: Kees Cook \<hidden\>
- Date: 2021-10-13 06:12:58 
- List: linux-block
- Page: https://ratatoskr.run/linux-block/2021/10/215854
- Thread: https://ratatoskr.run/linux-block/2021/10/215820/t.md

```text
On Wed, Oct 13, 2021 at 07:10:17AM +0200, Christoph Hellwig wrote:
> Use the proper helper to read the block device size.
> 
> Signed-off-by: Christoph Hellwig <hch@lst.de>

I think it might make sense, as you suggest earlier, to add a "bytes"
helper. This is the first user in the series needing:

	bdev_nr_sectors(...bdev) << SECTOR_SHIFT

Reviewed-by: Kees Cook <redacted>

-- 
Kees Cook
```