From mboxrd@z Thu Jan  1 00:00:00 1970
From: Andi Kleen <andi@firstfloor.org>
Subject: Re: [RFC][PATCH] introduce ptr_diff()
Date: Thu, 19 Aug 2010 14:59:57 +0200
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To: Bernd Petrovitsch <bernd@sysprog.at>
Cc: Andi Kleen <andi@firstfloor.org>, Namhyung Kim <namhyung@gmail.com>, Arnd Bergmann <arnd@arndb.de>, linux-arch@vger.kernel.org, linux-kernel@vger.kernel.org

> If so, the warning seems valid as sizeof(struct page) is probably not
> (always) a power of 2. On a native build on x86_64 it is 56 bytes
> hereover.
> Hmm ....


gcc just generats a mull with inverted value. mull is cheap on any
reasonable CPU.  Please fix sparse.

-andi