From 6436bd90f76e75d2c5786a50203b05a9b7f7100d Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Mon, 18 Oct 2021 12:11:02 +0200 Subject: 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 Reviewed-by: Kees Cook Link: https://lore.kernel.org/r/20211018101130.1838532-3-hch@lst.de Signed-off-by: Jens Axboe --- include/linux/genhd.h | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) (limited to 'include/linux/genhd.h') diff --git a/include/linux/genhd.h b/include/linux/genhd.h index cd4038fd5743..01d27f3a970e 100644 --- a/include/linux/genhd.h +++ b/include/linux/genhd.h @@ -236,9 +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) +{ + 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) -- cgit v1.2.3