Re: [PATCH V12 05/20] block: remove bvec_iter_rewind()

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On Mon, Nov 26, 2018 at 10:17:05AM +0800, Ming Lei wrote:
> Commit 7759eb23fd980 ("block: remove bio_rewind_iter()") removes
> bio_rewind_iter(), then no one uses bvec_iter_rewind() any more,
> so remove it.

Reviewed-by: Omar Sandoval <osandov@xxxxxx>

> Signed-off-by: Ming Lei <ming.lei@xxxxxxxxxx>
> ---
>  include/linux/bvec.h | 24 ------------------------
>  1 file changed, 24 deletions(-)
> 
> diff --git a/include/linux/bvec.h b/include/linux/bvec.h
> index 02c73c6aa805..ba0ae40e77c9 100644
> --- a/include/linux/bvec.h
> +++ b/include/linux/bvec.h
> @@ -92,30 +92,6 @@ static inline bool bvec_iter_advance(const struct bio_vec *bv,
>  	return true;
>  }
>  
> -static inline bool bvec_iter_rewind(const struct bio_vec *bv,
> -				     struct bvec_iter *iter,
> -				     unsigned int bytes)
> -{
> -	while (bytes) {
> -		unsigned len = min(bytes, iter->bi_bvec_done);
> -
> -		if (iter->bi_bvec_done == 0) {
> -			if (WARN_ONCE(iter->bi_idx == 0,
> -				      "Attempted to rewind iter beyond "
> -				      "bvec's boundaries\n")) {
> -				return false;
> -			}
> -			iter->bi_idx--;
> -			iter->bi_bvec_done = __bvec_iter_bvec(bv, *iter)->bv_len;
> -			continue;
> -		}
> -		bytes -= len;
> -		iter->bi_size += len;
> -		iter->bi_bvec_done -= len;
> -	}
> -	return true;
> -}
> -
>  #define for_each_bvec(bvl, bio_vec, iter, start)			\
>  	for (iter = (start);						\
>  	     (iter).bi_size &&						\
> -- 
> 2.9.5
> 



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