From mboxrd@z Thu Jan  1 00:00:00 1970
From: Eric Dumazet <dada1@cosmosbay.com>
Subject: Re: [PATCH][SOCK]: shrink struct sock
Date: Fri, 04 May 2007 08:10:15 +0200
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References: <20070504041101.GA27519@ghostprotocols.net>
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To: Arnaldo Carvalho de Melo <acme@ghostprotocols.net>,
	"David S. Miller" <davem@davemloft.net>, netdev@vger.kernel.org
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Arnaldo Carvalho de Melo a =E9crit :
>=20
> [acme@mica linux-2.6]$ pahole -C sk_buff_head net/core/sock.o
> struct sk_buff_head {
> 	struct sk_buff *           next;                 /*     0     8 */
> 	struct sk_buff *           prev;                 /*     8     8 */
> 	__u32                      qlen;                 /*    16     4 */
> 	spinlock_t                 lock;                 /*    20     8 */
> }; /* size: 32, cachelines: 1 */
>    /* padding: 4 */
>    /* last cacheline: 32 bytes */


Hum, maybe not enough tea this morning, but I always thought spinlock_t=
 size=20
was 4 bytes....