On 12/13/18 1:32 PM, Christoph Hellwig wrote:
> Signed-off-by: Christoph Hellwig <[email protected]>
> ---
>  block/bio.c       | 3 +--
>  block/blk-merge.c | 6 +++++-
>  2 files changed, 6 insertions(+), 3 deletions(-)
> 
> diff --git a/block/bio.c b/block/bio.c
> index 036e3f0cc736..fa1ea2ac66a8 100644
> --- a/block/bio.c
> +++ b/block/bio.c
> @@ -571,14 +571,13 @@ void bio_put(struct bio *bio)
>  }
>  EXPORT_SYMBOL(bio_put);
>  
> -inline int bio_phys_segments(struct request_queue *q, struct bio *bio)
> +int bio_phys_segments(struct request_queue *q, struct bio *bio)
>  {
>       if (unlikely(!bio_flagged(bio, BIO_SEG_VALID)))
>               blk_recount_segments(q, bio);
>  
>       return bio->bi_phys_segments;
>  }
> -EXPORT_SYMBOL(bio_phys_segments);
>  
>  /**
>   *   __bio_clone_fast - clone a bio that shares the original bio's biovec
> diff --git a/block/blk-merge.c b/block/blk-merge.c
> index 09591daf4993..62e97ec92034 100644
> --- a/block/blk-merge.c
> +++ b/block/blk-merge.c
> @@ -264,7 +264,11 @@ void blk_queue_split(struct request_queue *q, struct bio 
> **bio)
>       }
>  
>       /* physical segments can be figured out during splitting */
> -     res = split ? split : *bio;
> +     if (split) {
> +             res = split;
> +     } else {
> +             res = *bio;
> +     }
>       res->bi_phys_segments = nsegs;
>       bio_set_flag(res, BIO_SEG_VALID);

Unrelated hunk in this patch.

-- 
Jens Axboe

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