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| author | Christoph Hellwig <hch@lst.de> | 2021-10-18 12:11:02 +0200 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2021-10-18 22:43:22 +0200 |
| commit | 6436bd90f76e75d2c5786a50203b05a9b7f7100d (patch) | |
| tree | 42be0dddf22b8518f4ca2cd0c6d5d9995844e750 | |
| parent | block: move the SECTOR_SIZE related definitions to blk_types.h (diff) | |
| download | linux-6436bd90f76e75d2c5786a50203b05a9b7f7100d.tar.xz linux-6436bd90f76e75d2c5786a50203b05a9b7f7100d.zip | |
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@lst.de>
Reviewed-by: Kees Cook <keescook@chromium.org>
Link: https://lore.kernel.org/r/20211018101130.1838532-3-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
| -rw-r--r-- | include/linux/genhd.h | 7 |
1 files changed, 6 insertions, 1 deletions
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) |