linux-kernel - Re: Boot failure on Arndale with next-20131105

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Date:	Wed, 6 Nov 2013 11:45:24 +0530
From:	Tushar Behera <tushar.behera@...aro.org>
To:	Chris Mason <chris.mason@...ionio.com>
Cc:	Olof Johansson <olof@...om.net>, Jens Axboe <axboe@...nel.dk>,
	"linux-next@...r.kernel.org" <linux-next@...r.kernel.org>,
	lkml <linux-kernel@...r.kernel.org>,
	Kent Overstreet <kmo@...erainc.com>
Subject: Re: Boot failure on Arndale with next-20131105

On 6 November 2013 02:26, Chris Mason <chris.mason@...ionio.com> wrote:
> Quoting Olof Johansson (2013-11-05 15:38:33)
>> On Tue, Nov 5, 2013 at 12:33 PM, Chris Mason <chris.mason@...ionio.com> wrote:
>> > Quoting Olof Johansson (2013-11-05 15:23:51)
>> >> On Tue, Nov 5, 2013 at 11:33 AM, Jens Axboe <axboe@...nel.dk> 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@...aro.org>
(Fixes boot failure on Exynos5250-based Arndale board.)

-- 
Tushar Behera
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