netdev - Re: [PATCH 0/59] Cleanup sysctl

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Message-ID: <45AD2042.9090701@zytor.com>
Date:	Tue, 16 Jan 2007 10:58:10 -0800
From:	"H. Peter Anvin" <hpa@...or.com>
To:	"Eric W. Biederman" <ebiederm@...ssion.com>
CC:	Andrew Morton <akpm@...l.org>, linux-kernel@...r.kernel.org,
	Linux Containers <containers@...ts.osdl.org>,
	Tony Luck <tony.luck@...el.com>, netdev@...r.kernel.org
Subject: Re: [PATCH 0/59] Cleanup sysctl

Eric W. Biederman wrote:
>>>
>> With "architectural" I mean "guaranteed to be stable" (as opposed to
>> "incidental").  Sorry for the confusion.
> 
> Ok.  Then largely we are in agreement.  To implement that the rule is simple.
> If it isn't CTL_UNNUMBERED and the number is in Linus's tree, it is
> our responsibility to never change the meaning of that number.
> 
> If a new sysctl entry is introduced it should be CTL_UNNUMBERED until
> it reaches Linus's tree to avoid conflicts.
> 
> There is simply no point in having any kind of support for numbers
> whose meanings can change.
> 
> Which is why I removed the few cases of binary number duplication I
> found.
> 

Agreed.  *Furthermore*, if the number isn't in <linux/sysctl.h> it 
shouldn't exist anywhere else, either.

	-hpa

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