Virtualization - Oct 2021 - [PATCH v2 0/4] Add blk_validate_block_size() helper for drivers to validate block size

On Mon, Oct 25, 2021 at 10:25:02PM +0800, Xie Yongji
wrote:
> The block layer can't support the block size larger than
> page size yet, so driver needs to validate the block size
> before setting it. Now this validation is done in device drivers
> with some duplicated codes. This series tries to add a block
> layer helper for it and makes loop driver, nbd driver and
> virtio-blk driver use it.
> 
> V1 to V2:
> - Return and print error if validation fails in virtio-blk driver
Please document how all this was tested.
> Xie Yongji (4):
>   block: Add a helper to validate the block size
>   nbd: Use blk_validate_block_size() to validate block size
>   loop: Use blk_validate_block_size() to validate block size
>   virtio-blk: Use blk_validate_block_size() to validate block size
> 
>  drivers/block/loop.c       | 17 ++---------------
>  drivers/block/nbd.c        |  3 ++-
>  drivers/block/virtio_blk.c | 11 +++++++++--
>  include/linux/blkdev.h     |  8 ++++++++
>  4 files changed, 21 insertions(+), 18 deletions(-)
> 
> -- 
> 2.11.0