Re: Boot failure on Arndale with next-20131105

From: Tushar Behera
Date: Wed Nov 06 2013 - 01:15:46 EST


On 6 November 2013 02:26, Chris Mason <chris.mason@xxxxxxxxxxxx> wrote:
> Quoting Olof Johansson (2013-11-05 15:38:33)
>> On Tue, Nov 5, 2013 at 12:33 PM, Chris Mason <chris.mason@xxxxxxxxxxxx> wrote:
>> > Quoting Olof Johansson (2013-11-05 15:23:51)
>> >> On Tue, Nov 5, 2013 at 11:33 AM, Jens Axboe <axboe@xxxxxxxxx> wrote:

> This patch is only compile tested, but I think it'll fix it.
>
> diff --git a/fs/bio.c b/fs/bio.c
> index be93de1..3595456 100644
> --- a/fs/bio.c
> +++ b/fs/bio.c
> @@ -612,6 +612,7 @@ int bio_clone_biovec(struct bio *bio, gfp_t gfp_mask)
> unsigned nr_iovecs = 0;
> struct bio_vec bv, *bvl = NULL;
> struct bvec_iter iter;
> + int i;
>
> BUG_ON(!bio->bi_pool);
> BUG_ON(BIO_POOL_IDX(bio) != BIO_POOL_NONE);
> @@ -628,8 +629,9 @@ int bio_clone_biovec(struct bio *bio, gfp_t gfp_mask)
> bvl = bio->bi_inline_vecs;
> }
>
> + i = 0;
> bio_for_each_segment(bv, bio, iter)
> - bvl[bio->bi_vcnt++] = bv;
> + bvl[i++] = bv;
>
> bio->bi_io_vec = bvl;
> bio->bi_iter.bi_idx = 0;


Tested-by: Tushar Behera <tushar.behera@xxxxxxxxxx>
(Fixes boot failure on Exynos5250-based Arndale board.)

--
Tushar Behera
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