netdev - Re: [PATCH v2] net: bridge: add compile-time assert for cb struct size

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Date:	Tue, 03 Mar 2015 06:33:25 -0800
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	David Laight <David.Laight@...LAB.COM>
Cc:	'Florian Westphal' <fw@...len.de>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>
Subject: Re: [PATCH v2] net: bridge: add compile-time assert for cb struct
 size

On Tue, 2015-03-03 at 14:15 +0000, David Laight wrote:

> That is a build error.

Yes, but we want a build error that this obvious to understand.

Like :

BUILD_BUG_ON(sizeof(struct br_input_skb_cb) > FIELD_SIZEOF(struct sk_buff, cb));

Please send a tested patch so that we can compare the solutions.


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