Re: [PATCH 7/8] blk-map: let blk_rq_map_user_iov() support null mapping

[Tejun Heo]

FUJITA Tomonori wrote:
> On Wed,  1 Apr 2009 20:04:43 +0900
> Tejun Heo <tj@xxxxxxxxxx> wrote:
> 
>> Impact: API expansion
>>
>> Till now, only blk_rq_map() supported null mapping.  Add null mapping
>> support to blk_rq_map_user_iov() by moving BIO_NULL_MAPPED setting to
>> bio_copy_user_iov().
> 
> Why does blk_rq_map_user_iov() need to support the null mapping?

Because the next patch makes blk_rq_map_user() use it.

-- 
tejun
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