Re: [PATCH RFC 1/2] block: Add blk_bio_map_sg() helper

[Asias He]

On 06/14/2012 10:31 AM, Tejun Heo wrote:
> On Wed, Jun 13, 2012 at 03:41:46PM +0800, Asias He wrote:
> > Add a helper to map a bio to a scatterlist, modelled after
> > blk_rq_map_sg.
> >
> > This helper is useful for any driver that wants to create
> > a scatterlist from its ->make_request_fn method.
>
> This may not be possible but I really wanna avoid having two copies of
> that complex logic.  Any chance blk_rq_map_bio() can be implemented in
> a way that allows blk_rq_map_sg() can be built on top of it?  Also,
> please include proper docbook style function comment on new public API
> functions.


OK. Will do. I guess you mean building blk_rq_map_sg() on top of 
blk_bio_map_sg().


--
Asias


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