linux-kernel - Re: ixgbe truesize underestimation fix missing?

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Message-ID: <1329123803.2336.0.camel@edumazet-HP-Compaq-6005-Pro-SFF-PC>
Date:	Mon, 13 Feb 2012 10:03:23 +0100
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	Christian Brunner <chb@....de>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: ixgbe truesize underestimation fix missing?

Le lundi 13 février 2012 à 09:45 +0100, Christian Brunner a écrit :
> Back in Oktober, there was a patch by Eric Dumazet for the ixgbe
> driver to fix the skb truesize underestimation (commit
> 98130646770db42cd14c44ba0d7f2d0eb8078820). It changed only one line in
> ixgbe_main.c:
> 
> --- a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
> +++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
> @@ -1326,7 +1326,7 @@ static bool ixgbe_clean_rx_irq(struct
> ixgbe_q_vector *q_vector,
>                         skb->len += upper_len;
>                         skb->data_len += upper_len;
> -                       skb->truesize += upper_len;
> +                       skb->truesize += PAGE_SIZE / 2;
>                 }                 i++;
> 
> 
> But when I look at the current code (3.2.5 or 3.3rc), skb->truesize is
> still increased by the same value as skb->data_len.
> 
> 1228         skb->data_len += frag_list_size;
> 1229         skb->truesize += frag_list_size;
> 
> Is it posible that there was a merge conflict, or am I missing something here?

Maybe a problem in your local tree ?

I can see proper fix in current tree.



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