netdev - Re: PATCH] net: Cache align dst refcnt

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Message-Id: <20131217.151009.2096477709764504937.davem@davemloft.net>
Date:	Tue, 17 Dec 2013 15:10:09 -0500 (EST)
From:	David Miller <davem@...emloft.net>
To:	therbert@...gle.com
Cc:	eric.dumazet@...il.com, edumazet@...gle.com, netdev@...r.kernel.org
Subject: Re: PATCH] net: Cache align dst refcnt

From: Tom Herbert <therbert@...gle.com>
Date: Tue, 17 Dec 2013 11:51:02 -0800

> Definitely not hitting the bug on. In any case, I'm wondering why is
> cache alignment being hard coded here instead of using compiler
> directives?

To tightly control the size of this structure, it is one of the most
critical in the whole networking stack so any wasted bytes is a huge
deal.
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