Re: don't use ->bd_inode to access the block device size

Anand Jain
2021-10-13T07:15:56Z

On 13/10/2021 13:10, Christoph Hellwig wrote:
> Hi Jens,
>
> various drivers currently poke directy at the block device inode, which
> is a bit of a mess. This series cleans up the places that read the
> block device size to use the proper helpers. I have separate patches
> for many of the other bd_inode uses, but this series is already big
> enough as-is,
>
> I wondered about adding a helper for looking at the size in byte units
> to avoid the SECTOR_SHIFT shifts in various places. But given that
> I could not come up with a good name and

> block devices fundamentally
> work in sector size granularity I decided against that.

Yes. However, POV of its usage outside the block-layer, a wrapper
helper is a lot better. No.? If you agree, how about naming it bdev_size()?

Thanks, Anand

>
> Diffstat:
> block/fops.c | 2 +-
> drivers/block/drbd/drbd_int.h | 3 +--
> drivers/md/bcache/super.c | 2 +-
> drivers/md/bcache/util.h | 4 ----
> drivers/md/bcache/writeback.c | 2 +-
> drivers/md/dm-bufio.c | 2 +-
> drivers/md/dm-cache-metadata.c | 2 +-
> drivers/md/dm-cache-target.c | 2 +-
> drivers/md/dm-clone-target.c | 2 +-
> drivers/md/dm-dust.c | 5 ++---
> drivers/md/dm-ebs-target.c | 2 +-
> drivers/md/dm-era-target.c | 2 +-
> drivers/md/dm-exception-store.h | 2 +-
> drivers/md/dm-flakey.c | 3 +--
> drivers/md/dm-integrity.c | 6 +++---
> drivers/md/dm-linear.c | 3 +--
> drivers/md/dm-log-writes.c | 4 ++--
> drivers/md/dm-log.c | 2 +-
> drivers/md/dm-mpath.c | 2 +-
> drivers/md/dm-raid.c | 6 +++---
> drivers/md/dm-switch.c | 2 +-
> drivers/md/dm-table.c | 3 +--
> drivers/md/dm-thin-metadata.c | 2 +-
> drivers/md/dm-thin.c | 2 +-
> drivers/md/dm-verity-target.c | 3 +--
> drivers/md/dm-writecache.c | 2 +-
> drivers/md/dm-zoned-target.c | 2 +-
> drivers/md/md.c | 26 +++++++++++---------------
> drivers/mtd/devices/block2mtd.c | 5 +++--
> drivers/nvme/target/io-cmd-bdev.c | 4 ++--
> drivers/target/target_core_iblock.c | 5 +++--
> fs/affs/super.c | 2 +-
> fs/btrfs/dev-replace.c | 2 +-
> fs/btrfs/disk-io.c | 3 ++-
> fs/btrfs/ioctl.c | 4 ++--
> fs/btrfs/volumes.c | 7 ++++---
> fs/buffer.c | 4 ++--
> fs/cramfs/inode.c | 2 +-
> fs/ext4/super.c | 2 +-
> fs/fat/inode.c | 5 +----
> fs/hfs/mdb.c | 2 +-
> fs/hfsplus/wrapper.c | 2 +-
> fs/jfs/resize.c | 5 ++---
> fs/jfs/super.c | 5 ++---
> fs/nfs/blocklayout/dev.c | 4 ++--
> fs/nilfs2/ioctl.c | 2 +-
> fs/nilfs2/super.c | 2 +-
> fs/nilfs2/the_nilfs.c | 3 ++-
> fs/ntfs/super.c | 8 +++-----
> fs/ntfs3/super.c | 3 +--
> fs/pstore/blk.c | 4 ++--
> fs/reiserfs/super.c | 7 ++-----
> fs/squashfs/super.c | 5 +++--
> fs/udf/lowlevel.c | 5 ++---
> fs/udf/super.c | 9 +++------
> include/linux/genhd.h | 6 ++++++
> 56 files changed, 100 insertions(+), 117 deletions(-)
>