[dm-devel] [PATCH v2 21/26] block: Convert some code to bio_for_each_segment_all()

[Tejun Heo]

On Mon, Sep 10, 2012 at 05:22:32PM -0700, Kent Overstreet wrote:
> A few places in the code were either open coding or using the wrong
> version - fix.
> 
> Signed-off-by: Kent Overstreet <koverstreet at google.com>
> CC: Jens Axboe <axboe at kernel.dk>
> CC: NeilBrown <neilb at suse.de>
> ---
> --- a/drivers/md/raid1.c
> +++ b/drivers/md/raid1.c
> @@ -921,7 +921,7 @@ static void alloc_behind_pages(struct bio *bio, struct r1bio *r1_bio)
>  	if (unlikely(!bvecs))
>  		return;
>  
> -	bio_for_each_segment(bvec, bio, i) {
> +	bio_for_each_segment_all(bvec, bio, i) {

I don't get this conversion.  Why is this necessary?

-- 
tejun