From mboxrd@z Thu Jan 1 00:00:00 1970 From: Christoph Hellwig Subject: [PATCH 25/30] block: add a sb_bdev_nr_blocks helper Date: Fri, 15 Oct 2021 15:26:38 +0200 Message-ID: <20211015132643.1621913-26-hch@lst.de> References: <20211015132643.1621913-1-hch@lst.de> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <20211015132643.1621913-1-hch@lst.de> List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: dm-devel-bounces@redhat.com Errors-To: dm-devel-bounces@redhat.com To: Jens Axboe Cc: Dave Kleikamp , jfs-discussion@lists.sourceforge.net, Mike Snitzer , linux-nvme@lists.infradead.org, Konstantin Komarov , Song Liu , dm-devel@redhat.com, target-devel@vger.kernel.org, reiserfs-devel@vger.kernel.org, drbd-dev@lists.linbit.com, linux-nilfs@vger.kernel.org, linux-scsi@vger.kernel.org, OGAWA Hirofumi , linux-ext4@vger.kernel.org, Kees Cook , Josef Bacik , Coly Li , linux-raid@vger.kernel.org, linux-bcache@vger.kernel.org, David Sterba , Ryusuke Konishi , Anton Altaparmakov , linux-block@vger.kernel.org, linux-nfs@vger.kernel.org, Theodore Ts'o , linux-ntfs-dev@lists.sourceforge.net, Jan Kara Add a helper to return the size of sb->s_bdev in sb->s_blocksize_bits based unites. Note that SECTOR_SHIFT has to be open coded due to include dependency issues for now, but I have a plan to sort that out eventually. Signed-off-by: Christoph Hellwig --- include/linux/genhd.h | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/include/linux/genhd.h b/include/linux/genhd.h index f67db3c5a04b3..70b4ac47e693c 100644 --- a/include/linux/genhd.h +++ b/include/linux/genhd.h @@ -250,6 +250,12 @@ 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); -- 2.30.2