Re: [PATCH v1 1/5] block: introduce bio_clone_bioset_partial()

[Christoph Hellwig]

On Fri, Feb 10, 2017 at 06:56:13PM +0800, Ming Lei wrote:
> md still need bio clone(not the fast version) for behind write,
> and it is more efficient to use bio_clone_bioset_partial().
> 
> The idea is simple and just copy the bvecs range specified from
> parameters.

Given how few users bio_clone_bioset has I wonder if we shouldn't
simply add the two new arguments to it instead of adding another
indirection.

Otherwise looks fine:

Reviewed-by: Christoph Hellwig <hch@xxxxxx>