[PATCH V9 5/9] nvmet: add bio get helper for different backends

[Christoph Hellwig]

On Wed, Jan 13, 2021 at 05:03:05AM +0000, Chaitanya Kulkarni wrote:
> On 1/11/21 23:33, Christoph Hellwig wrote:
> > I'm not a huge fan of this helper, especially as it sets an end_io
> > callback only for the allocated case, which is a weird calling
> > convention.
> >
> 
> The patch has a right documentation and that end_io is needed
> for passthru case. To get rid of the weirdness I can remove
> passthru case and make itend_io assign to inline and non-inline bio
> to make it non-weired.
> 
> Since this eliminates exactly identical lines of the code in atleast two
> backend which we should try to use the helper in non-wried way.

I really do not like helper that just eliminate "duplicate lines" vs
encapsulating logic that makes sense one its own.