Re: [PATCH] crush: decode and initialize chooseleaf_vary_r

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Reviewed-by: Sage Weil <sage@xxxxxxxxxxx>

On Mon, 12 May 2014, Ilya Dryomov wrote:

> Commit e2b149cc4ba0 ("crush: add chooseleaf_vary_r tunable") added the
> crush_map::chooseleaf_vary_r field but missed the decode part.  This
> lead to misdirected requests caused by incorrect raw crush mapping
> sets.
> 
> Fixes: http://tracker.ceph.com/issues/8226
> 
> Reported-and-Tested-by: Dmitry Smirnov <onlyjob@xxxxxxxxxxxxxx>
> Signed-off-by: Ilya Dryomov <ilya.dryomov@xxxxxxxxxxx>
> ---
>  net/ceph/osdmap.c |    5 +++++
>  1 file changed, 5 insertions(+)
> 
> diff --git a/net/ceph/osdmap.c b/net/ceph/osdmap.c
> index 8b8a5a24b223..c547e46084d3 100644
> --- a/net/ceph/osdmap.c
> +++ b/net/ceph/osdmap.c
> @@ -329,6 +329,11 @@ static struct crush_map *crush_decode(void *pbyval, void *end)
>  	dout("crush decode tunable chooseleaf_descend_once = %d",
>  	     c->chooseleaf_descend_once);
>  
> +	ceph_decode_need(p, end, sizeof(u8), done);
> +	c->chooseleaf_vary_r = ceph_decode_8(p);
> +	dout("crush decode tunable chooseleaf_vary_r = %d",
> +	     c->chooseleaf_vary_r);
> +
>  done:
>  	dout("crush_decode success\n");
>  	return c;
> -- 
> 1.7.10.4
> 
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