linux-kernel - Re: [PATCH 1/2] x86: rename PTE_MASK to PTE_PFN

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Message-ID: <873am2kr4n.fsf@saeurebad.de>
Date:	Tue, 22 Jul 2008 15:03:36 +0200
From:	Johannes Weiner <hannes@...urebad.de>
To:	Jeremy Fitzhardinge <jeremy@...p.org>
Cc:	Rusty Russell <rusty@...tcorp.com.au>, Ingo Molnar <mingo@...e.hu>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/2] x86: rename PTE_MASK to PTE_PFN_MASK

Jeremy Fitzhardinge <jeremy@...p.org> writes:

> Rusty, in his peevish way, complained that macros defining constants
> should have a name which somewhat accurately reflects the actual
> purpose of the constant.
>
> Aside from the fact that PTE_MASK gives no clue as to what's actually
> being masked, and is misleadingly similar to the functionally entirely
> different PMD_MASK, PUD_MASK and PGD_MASK, I don't really see what the
> problem is.

PTE_PFN_MASK is not symmetric to PAGE_MASK.  How about PTE_PROT_MASK?

	Hannes
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