linux-kernel - Re: [PATCH 1/3] md/raid5: fix raid5_set_bi_hw

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Date:	Tue, 14 Jun 2011 14:12:42 +1000
From:	NeilBrown <neilb@...e.de>
To:	Namhyung Kim <namhyung@...il.com>
Cc:	linux-raid@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/3] md/raid5: fix raid5_set_bi_hw_segments

On Mon, 13 Jun 2011 23:48:22 +0900 Namhyung Kim <namhyung@...il.com> wrote:

> The @bio->bi_phys_segments consists of active stripes count in the
> lower 16 bits and processed stripes count in the upper 16 bits. So
> logical-OR operator should be bitwise one.
> 
> Signed-off-by: Namhyung Kim <namhyung@...il.com>
> ---
>  drivers/md/raid5.c |    2 +-
>  1 files changed, 1 insertions(+), 1 deletions(-)
> 
> diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c
> index 346e69bfdab3..fa6ac70dc72f 100644
> --- a/drivers/md/raid5.c
> +++ b/drivers/md/raid5.c
> @@ -129,7 +129,7 @@ static inline int raid5_dec_bi_hw_segments(struct bio *bio)
>  
>  static inline void raid5_set_bi_hw_segments(struct bio *bio, unsigned int cnt)
>  {
> -	bio->bi_phys_segments = raid5_bi_phys_segments(bio) || (cnt << 16);
> +	bio->bi_phys_segments = raid5_bi_phys_segments(bio) | (cnt << 16);
>  }
>  
>  /* Find first data disk in a raid6 stripe */


Thanks for this and the other 2!!
I have added "Cc: stable@...nel.org" to the first two and applied them.  I
expect to send them off to Linus later today.

Thanks,
NeilBrown
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