On Mon, Jul 20, 2009 at 04:21:16PM +0800, Herbert Xu wrote:
> 
> Can you point me to the existing code?
> 

For the crypto-layer it's just scatterwalk_sg_chain() that removes the
termination bit. 

For the block-layer it's blk_rq_map_integrity_sg() and two times in
blk_rq_map_sg().
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