On 02/16/2017 12:45 PM, Ming Lei wrote:
> @@ -998,7 +998,8 @@ static void alloc_behind_pages(struct bio *bio, struct 
> r1bio *r1_bio)
>  {
>       int i;
>       struct bio_vec *bvec;
> -     struct bio_vec *bvecs = kzalloc(bio->bi_vcnt * sizeof(struct bio_vec),
> +     unsigned vcnt = bio_segments_all(bio);
> +     struct bio_vec *bvecs = kzalloc(vcnt * sizeof(struct bio_vec),
>                                       GFP_NOIO);

Maybe use kcalloc() instead of kzalloc() with a multiplication.

Byte,
        Johannes
-- 
Johannes Thumshirn                                          Storage
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