netdev - Re: [PATCH 1/2] net: Enable 64-bit net device statistics on 32-bit architectures

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Message-ID: <20100604102852.08ce3cd1@nehalam>
Date:	Fri, 4 Jun 2010 10:28:52 -0700
From:	Stephen Hemminger <shemminger@...tta.com>
To:	Ben Hutchings <bhutchings@...arflare.com>
Cc:	David Miller <davem@...emloft.net>, Arnd Bergmann <arnd@...db.de>,
	netdev@...r.kernel.org, linux-net-drivers@...arflare.com
Subject: Re: [PATCH 1/2] net: Enable 64-bit net device statistics on 32-bit
 architectures

On Thu, 03 Jun 2010 20:11:38 +0100
Ben Hutchings <bhutchings@...arflare.com> wrote:

> static inline u64 rtnl_link_stats64_read(const u64 *field)
> {
> 	return ACCESS_ONCE(*field);
> }
> static inline u32 rtnl_link_stats64_read32(const u64 *field)
> {
> 	return ACCESS_ONCE(*field);
> }

Do we really care if compiler reorders access. I think not.
There was no order guarantee in the past.

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