Commit bcc6e2cf authored by Christoph Hellwig's avatar Christoph Hellwig Committed by Jens Axboe
Browse files

block: add a sb_bdev_nr_blocks helper 



Add a helper to return the size of sb->s_bdev in sb->s_blocksize_bits
based unites.

Signed-off-by: default avatarChristoph Hellwig <hch@lst.de>
Reviewed-by: default avatarKees Cook <keescook@chromium.org>
Reviewed-by: default avatarChaitanya Kulkarni <kch@nvidia.com>
Link: https://lore.kernel.org/r/20211018101130.1838532-26-hch@lst.de


Signed-off-by: default avatarJens Axboe <axboe@kernel.dk>
parent 2a93ad8f

include/linux/genhd.h

+6 −0
Original line number Diff line number Diff line
@@ -251,6 +251,12 @@ static inline sector_t get_capacity(struct gendisk *disk) 
	return bdev_nr_sectors(disk->part0);

}



static inline u64 sb_bdev_nr_blocks(struct super_block *sb)

{

	return bdev_nr_sectors(sb->s_bdev) >>

		(sb->s_blocksize_bits - SECTOR_SHIFT);

}



int bdev_disk_changed(struct gendisk *disk, bool invalidate);

void blk_drop_partitions(struct gendisk *disk);