linux-kernel - Re: [PATCH 0/8] include/net: next set of extern removals

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Message-ID: <1375374560.2034.52.camel@joe-AO722>
Date:	Thu, 01 Aug 2013 09:29:20 -0700
From:	Joe Perches <joe@...ches.com>
To:	David Howells <dhowells@...hat.com>
Cc:	netdev@...r.kernel.org, linux-hams@...r.kernel.org,
	linux-wireless@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-afs@...ts.infradead.org
Subject: Re: [PATCH 0/8] include/net: next set of extern removals

On Thu, 2013-08-01 at 13:04 +0100, David Howells wrote:
> Joe Perches <joe@...ches.com> wrote:
> > Standardize on no extern use on function prototypes
> Can we please standardise on _having_ externs on function prototypes?

Why?

What value is there in using extern for function prototypes?

Your argument for "picking out at a glance"
https://lkml.org/lkml/2013/8/1/237
really doesn't make sense to me.

Basically, anything with parentheses that's not a #define
is an extern.

Exceptions exist for extern function pointers, but those
are fairly unusual anyway.  Outside of netfilter,
extern function pointers are only used about a dozen times
total in the kernel tree.

So, please provide some examples supporting your view.

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