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Date:   Mon, 03 Aug 2020 15:38:55 -0700 (PDT)
From:   David Miller <>
Subject: Re: [PATCH] net: Use __skb_pagelen() directly in skb_cow_data()

From: linmiaohe <>
Date: Sat, 1 Aug 2020 17:30:23 +0800

> From: Miaohe Lin <>
> In fact, skb_pagelen() - skb_headlen() is equal to __skb_pagelen(), use it
> directly to avoid unnecessary skb_headlen() call.
> Also fix the CHECK note of
>     Comparison to NULL could be written "!__pskb_pull_tail"
> Signed-off-by: Miaohe Lin <>


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