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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