[dm-devel] [PATCH V3 06/13] block: add new field into 'struct bvec_iter'

[Hannes Reinecke]

On 3/24/21 1:19 PM, Ming Lei wrote:
> There is a hole at the end of 'struct bvec_iter', so put a new field
> here and we can save cookie returned from submit_bio() here for
> supporting bio based polling.
> 
> This way can avoid to extend bio unnecessarily.
> 
> Meantime add two helpers to get/set this field.
> 
> Signed-off-by: Ming Lei <ming.lei at redhat.com>
> ---
>   block/blk.h          | 10 ++++++++++
>   include/linux/bvec.h |  8 ++++++++
>   2 files changed, 18 insertions(+)
> 
Reviewed-by: Hannes Reinecke <hare at suse.de>

Cheers,

Hannes
-- 
Dr. Hannes Reinecke                Kernel Storage Architect
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