linux-kernel - Re: [PATCH 07/18] sysctl extern cleanup

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Message-ID: <a8e1da1002200716u1eb6224fr7b3d6eca1c015cb8@mail.gmail.com>
Date:	Sat, 20 Feb 2010 23:16:30 +0800
From:	Dave Young <hidave.darkstar@...il.com>
To:	Arnd Bergmann <arnd@...db.de>
Cc:	"David S. Miller" <davem@...emloft.net>,
	Gerd Hoffmann <kraxel@...hat.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Roland McGrath <roland@...hat.com>,
	Ingo Molnar <mingo@...e.hu>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	"Eric W. Biederman" <ebiederm@...ssion.com>,
	linux-kernel@...r.kernel.org, James Morris <jmorris@...ei.org>
Subject: Re: [PATCH 07/18] sysctl extern cleanup - compat

On Sat, Feb 20, 2010 at 10:51 PM, Arnd Bergmann <arnd@...db.de> wrote:
> On Saturday 20 February 2010 15:13:28 Dave Young wrote:
>> Extern declarations in sysctl.c should be move to their own head file,
>> and then include them in relavant .c files.
>>
>> Move compat_log extern declaration to linux/compat.h
>>
>> Signed-off-by: Dave Young <hidave.darkstar@...il.com>
>
> Good idea in principle, but please don't enclose the extern
> declaration in #ifdef:
>
>> --- linux-2.6.32.orig/include/linux/compat.h  2010-02-20 14:02:24.334925488 +0800
>> +++ linux-2.6.32/include/linux/compat.h       2010-02-20 14:24:30.405627048 +0800
>> @@ -17,6 +17,9 @@
>>  #include <asm/siginfo.h>
>>  #include <asm/signal.h>
>>
>> +#ifdef CONFIG_SYSCTL
>> +extern int compat_log;
>> +#endif
>>  #define compat_jiffies_to_clock_t(x) \
>>               (((unsigned long)(x) * COMPAT_USER_HZ) / HZ)
>
> This will force a rebuild of everything that #includes linux/compat.h when CONFIG_SYSCTL
> changes, while nothing really changes.
>
> Obviously, the same goes for the entire series.

Yes, indeed. Thanks for the comments.

Actually I need resend the whole patchset with a updated version.

>
>        Arnd
> --
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-- 
Regards
dave
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