From mboxrd@z Thu Jan  1 00:00:00 1970
From: David Miller <davem@davemloft.net>
Subject: Re: [PATCH 1/1] network memory allocator.
Date: Mon, 14 Aug 2006 04:22:06 -0700 (PDT)
Message-ID: <20060814.042206.85411651.davem@davemloft.net>
References: <20060814110359.GA27704@2ka.mipt.ru>
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To: johnpol@2ka.mipt.ru
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From: Evgeniy Polyakov <johnpol@2ka.mipt.ru>
Date: Mon, 14 Aug 2006 15:04:03 +0400

>  	/* These elements must be at the end, see alloc_skb() for details.  */
> -	unsigned int		truesize;
> +	unsigned int		truesize, __tsize;

There is no real need for new member.

> -		kfree(skb->head);
> +		avl_free(skb->head, skb->__tsize);

Just use "skb->end - skb->head + sizeof(struct skb_shared_info)"
as the size argument.

Then, there is no reason for skb->__tsize :-)