[dm-devel] [RFC v2 1/3] block: Introduce blk_bio_map_sg() to map one bio
Jens Axboe
axboe at kernel.dk
Fri Jun 3 14:35:57 UTC 2016
On 05/27/2016 05:11 AM, Baolin Wang wrote:
> In dm-crypt, it need to map one bio to scatterlist for improving the
> hardware engine encryption efficiency. Thus this patch introduces the
> blk_bio_map_sg() function to map one bio with scatterlists.
>
> For avoiding the duplicated code in __blk_bios_map_sg() function, add
> one parameter to distinguish bio map or request map.
Just detach the bio in blk_bio_map_sg() instead of adding a separate
case (and argument) for it in __blk_bios_map_sg().
--
Jens Axboe
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