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Date:   Tue, 19 Oct 2021 04:04:16 +0300
From:   Kari Argillander <kari.argillander@gmail.com>
To:     Jens Axboe <axboe@kernel.dk>
Cc:     Christoph Hellwig <hch@lst.de>, Coly Li <colyli@suse.de>,
        Mike Snitzer <snitzer@redhat.com>, Song Liu <song@kernel.org>,
        David Sterba <dsterba@suse.com>,
        Josef Bacik <josef@toxicpanda.com>,
        Theodore Ts'o <tytso@mit.edu>,
        OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>,
        Dave Kleikamp <shaggy@kernel.org>,
        Ryusuke Konishi <konishi.ryusuke@gmail.com>,
        Anton Altaparmakov <anton@tuxera.com>,
        Konstantin Komarov <almaz.alexandrovich@paragon-software.com>,
        Kees Cook <keescook@chromium.org>,
        Phillip Lougher <phillip@squashfs.org.uk>,
        Jan Kara <jack@suse.com>, linux-block@vger.kernel.org,
        dm-devel@redhat.com, drbd-dev@lists.linbit.com,
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Subject: Re: don't use ->bd_inode to access the block device size v3
Message-ID: <20211019010416.vgecxu6wnvwi7fii@kari-VirtualBox>
References: <20211018101130.1838532-1-hch@lst.de>
 <4a8c3a39-9cd3-5b2f-6d0f-a16e689755e6@kernel.dk>
 <20211018171843.GA3338@lst.de>
 <2f5dcf79-8419-45ff-c27c-68d43242ccfe@kernel.dk>
 <20211018174901.GA3990@lst.de>
 <e0784f3e-46c8-c90c-870b-60cc2ed7a2da@kernel.dk>
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On Mon, Oct 18, 2021 at 11:53:08AM -0600, Jens Axboe wrote:

snip..

> diff --git a/include/linux/genhd.h b/include/linux/genhd.h
> index 7b0326661a1e..a967b3fb3c71 100644
> --- a/include/linux/genhd.h
> +++ b/include/linux/genhd.h
> @@ -236,14 +236,14 @@ static inline sector_t get_start_sect(struct block_device *bdev)
>  	return bdev->bd_start_sect;
>  }
>  
> -static inline loff_t bdev_nr_bytes(struct block_device *bdev)
> +static inline sector_t bdev_nr_sectors(struct block_device *bdev)
>  {
> -	return i_size_read(bdev->bd_inode);
> +	return bdev->bd_nr_sectors;
>  }
>  
> -static inline sector_t bdev_nr_sectors(struct block_device *bdev)
> +static inline loff_t bdev_nr_bytes(struct block_device *bdev)
>  {
> -	return bdev_nr_bytes(bdev) >> SECTOR_SHIFT;
> +	return bdev_nr_setors(bdev) << SECTOR_SHIFT;

setors -> sectors

>  }
>  
>  static inline sector_t get_capacity(struct gendisk *disk)
> 
> -- 
> Jens Axboe
>