> On 2 May 2017, at 23.51, NeilBrown <neilb@suse.com> wrote:
> 
>> 
>> Hi Neil,
>> 
>> Looks good. Thanks for fixing this. I did not know that bio_clone_bioset
>> was not supposed to be used on drivers.
> 
> Prior to my patchset, using bio_clone_bioset() wasn't wrong in drivers,
> though it was a waste when bio_clone_fast() would to just as well as is
> more efficient.
> After my patchset, using it can be problematic.  I'm wondering what I
> should do to encourage those problems to be more visible so that if
> people to us it, they'll get a warning or something.
> 
> Thanks,
> NeilBrown
> 

Thanks for the explanation Neil. In my opinion a comment on top of
bio_clone_bioset() would be hellful, as Ming suggested. But a warning
might make sense too.

Javier