netdev - Re: [PATCH 3/6] net: add support for per-paged-fragment destructors

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Message-ID: <20120106011524.GA10975@rere.qmqm.pl>
Date:	Fri, 6 Jan 2012 02:15:24 +0100
From:	Michał Mirosław <mirq-linux@...e.qmqm.pl>
To:	Ian Campbell <ian.campbell@...rix.com>
Cc:	netdev@...r.kernel.org, David Miller <davem@...emloft.net>,
	Eric Dumazet <eric.dumazet@...il.com>
Subject: Re: [PATCH 3/6] net: add support for per-paged-fragment destructors

On Thu, Jan 05, 2012 at 05:13:41PM +0000, Ian Campbell wrote:
> Entities which care about the complete lifecycle of pages which they inject
> into the network stack via an skb paged fragment can choose to set this
> destructor in order to receive a callback when the stack is really finished
> with a page (including all clones, retransmits, pull-ups etc etc).
[...]
> --- a/include/linux/skbuff.h
> +++ b/include/linux/skbuff.h
> @@ -143,9 +143,16 @@ struct sk_buff;
>  
>  typedef struct skb_frag_struct skb_frag_t;
>  
> +struct skb_frag_destructor {
> +	atomic_t ref;
> +	int (*destroy)(void *data);
> +	void *data;
> +};
> +
[...]

What happened to removal of 'data' field from this structure?

ref: http://www.spinics.net/lists/netdev/msg179050.html

Best Regards,
Michał Mirosław

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