netdev - Re: [PATCH net-next] net: more accurate skb truesize

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Message-ID: <1318525877.2393.41.camel@edumazet-HP-Compaq-6005-Pro-SFF-PC>
Date:	Thu, 13 Oct 2011 19:11:17 +0200
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	Ben Hutchings <bhutchings@...arflare.com>
Cc:	David Miller <davem@...emloft.net>,
	netdev <netdev@...r.kernel.org>, Andi Kleen <ak@...ux.intel.com>
Subject: Re: [PATCH net-next] net: more accurate skb truesize

Le jeudi 13 octobre 2011 à 17:32 +0100, Ben Hutchings a écrit :

> Fair enough, but please add a comment explaining this.
> 


What about :

	/* We do our best to align skb_shared_info on a separate cache
	 * line. It usually works because kmalloc(X > CACHE_BYTES) gives
	 * aligned memory blocks, unless SLUB/SLAB debug is enabled.
	 */
	size += SKB_DATA_ALIGN(sizeof(struct skb_shared_info));


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