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Date: Mon, 18 Oct 2021 12:11:02 +0200 From: Christoph Hellwig <hch@....de> To: Jens Axboe <axboe@...nel.dk> Cc: Coly Li <colyli@...e.de>, Mike Snitzer <snitzer@...hat.com>, Song Liu <song@...nel.org>, David Sterba <dsterba@...e.com>, Josef Bacik <josef@...icpanda.com>, "Theodore Ts'o" <tytso@....edu>, OGAWA Hirofumi <hirofumi@...l.parknet.co.jp>, Dave Kleikamp <shaggy@...nel.org>, Ryusuke Konishi <konishi.ryusuke@...il.com>, Anton Altaparmakov <anton@...era.com>, Konstantin Komarov <almaz.alexandrovich@...agon-software.com>, Kees Cook <keescook@...omium.org>, Phillip Lougher <phillip@...ashfs.org.uk>, Jan Kara <jack@...e.com>, linux-block@...r.kernel.org, dm-devel@...hat.com, drbd-dev@...ts.linbit.com, linux-bcache@...r.kernel.org, linux-raid@...r.kernel.org, linux-nvme@...ts.infradead.org, linux-scsi@...r.kernel.org, target-devel@...r.kernel.org, linux-fsdevel@...r.kernel.org, linux-btrfs@...r.kernel.org, linux-ext4@...r.kernel.org, jfs-discussion@...ts.sourceforge.net, linux-nfs@...r.kernel.org, linux-nilfs@...r.kernel.org, linux-ntfs-dev@...ts.sourceforge.net, ntfs3@...ts.linux.dev, reiserfs-devel@...r.kernel.org Subject: [PATCH 02/30] block: add a bdev_nr_bytes helper Add a helper to query the size of a block device in bytes. This will be used to remove open coded access to ->bd_inode. Signed-off-by: Christoph Hellwig <hch@....de> Reviewed-by: Kees Cook <keescook@...omium.org> --- include/linux/genhd.h | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/include/linux/genhd.h b/include/linux/genhd.h index 082a3e5fd8fa1..b560aee1d69f0 100644 --- a/include/linux/genhd.h +++ b/include/linux/genhd.h @@ -235,9 +235,14 @@ 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) +{ + return i_size_read(bdev->bd_inode); +} + static inline sector_t bdev_nr_sectors(struct block_device *bdev) { - return i_size_read(bdev->bd_inode) >> 9; + return bdev_nr_bytes(bdev) >> SECTOR_SHIFT; } static inline sector_t get_capacity(struct gendisk *disk) -- 2.30.2
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