linux-kernel - Re: [RESEND][PATCH] Add /proc/mempool to display mempool usage

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Date:	Mon, 1 Dec 2008 12:12:12 -0800 (PST)
From:	Linus Torvalds <torvalds@...ux-foundation.org>
To:	Pekka Enberg <penberg@...helsinki.fi>
cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Matt Mackall <mpm@...enic.com>, randy.dunlap@...cle.com,
	greg@...ah.com, adobriyan@...il.com, remi.colinet@...il.com,
	linux-kernel@...r.kernel.org, linux-api@...r.kernel.org,
	linux-fsdevel@...r.kernel.org
Subject: Re: [RESEND][PATCH] Add /proc/mempool to display mempool usage

On Mon, 1 Dec 2008, Pekka Enberg wrote:
> 
> Hmm, I thought Documentation/ABI/ was supposed to tell us what's an
> ABI you can depend on and what's not. I mean, you shouldn't be
> depending on anything but the interfaces documented in
> Documentation/ABI/stable/, no?

Who is the f*cking MORON that thinks that "documentation" has any meaning 
what-so-ever?

The fact that something is documented (whether correctly or not) has 
absolutely _zero_ impact on anything at all. What makes something an ABI 
is that it's useful and available. The only way something isn't an ABI is 
by _explicitly_ making sure that it's not available even by mistake in a 
stable form for binary use.

Example: kernel internal data structures and function calls. We make sure 
that you simply _cannot_ make a binary that works across kernel versions. 
That is the only way for an ABI to not form.

		Linus
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