linux-kernel - Re: [PATCH 05/44 take 2] [UBI] internal common header

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Date:	Tue, 20 Feb 2007 17:24:15 +0200
From:	Artem Bityutskiy <dedekind@...radead.org>
To:	David Woodhouse <dwmw2@...radead.org>
Cc:	Theodore Tso <tytso@....edu>,
	Christoph Hellwig <hch@...radead.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Frank Haverkamp <haver@...t.ibm.com>,
	Josh Boyer <jwboyer@...ux.vnet.ibm.com>,
	Thomas Gleixner <tglx@...utronix.de>
Subject: Re: [PATCH 05/44 take 2] [UBI] internal common header

On Tue, 2007-02-20 at 15:15 +0000, David Woodhouse wrote:
> On Tue, 2007-02-20 at 09:55 -0500, Theodore Tso wrote:
> > It appears that the reason why you are doing this is because you think
> > you need the (packed) attribute.  Not needed; Linux assumes all over
> > the place 16, 32, and 64 types are packed.  If Linux is ever compiled
> > on an architecture where this isn't true, the compiler will probably
> > need to be fixed so these assumptions are true, since all manner of
> > things will break.
> 
> No, the packedness is irrelevant -- the reason is just to catch all the
> places where you might otherwise forget to use byte-swapping accesses.

Bear in mind we share this header with user-space, so it is safer to use
packed as well as C99 types.

-- 
Best regards,
Artem Bityutskiy (Битюцкий Артём)

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