linux-kernel - Re: [Patch 04/18] include/linux/logfs.h

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Date:	Wed, 06 Jun 2007 10:59:48 +0200
From:	Andreas Schwab <schwab@...e.de>
To:	David Woodhouse <dwmw2@...radead.org>
Cc:	Segher Boessenkool <segher@...nel.crashing.org>,
	Kyle Moffett <mrmacman_g4@....com>,
	John Stoffel <john@...ffel.org>, Willy Tarreau <w@....eu>,
	Evgeniy Polyakov <johnpol@....mipt.ru>, CaT <cat@....com.au>,
	Ondrej Zajicek <santiago@...reenet.org>,
	linux-kernel@...r.kernel.org, Bill Davidsen <davidsen@....com>,
	Jan Engelhardt <jengelh@...ux01.gwdg.de>,
	Thomas Gleixner <tglx@...utronix.de>,
	Dongjun Shin <djshin90@...il.com>,
	Pekka Enberg <penberg@...helsinki.fi>,
	Arnd Bergmann <arnd@...db.de>,
	Albert Cahalan <acahalan@...il.com>,
	linux-fsdevel@...r.kernel.org, linux-mtd@...ts.infradead.org,
	Artem Bityutskiy <dedekind@...radead.org>,
	Sam Ravnborg <sam@...nborg.org>,
	Jamie Lokier <jamie@...reable.org>,
	Roland Dreier <rdreier@...co.com>,
	Jörn Engel <joern@...ybastard.org>,
	Pavel Machek <pavel@....cz>,
	Ulisses Furquim <ulissesf@...il.com>, akpm@...l.org,
	David Weinehall <tao@....umu.se>
Subject: Re: [Patch 04/18] include/linux/logfs.h

David Woodhouse <dwmw2@...radead.org> writes:

> Won't a simple struct { uint16_t } get padded to a size of 4 bytes on
> ARM? Even if I'm misremembering that, I certainly can't guarantee that
> such a thing will _never_ happen on any newly-invented ABI. If you had
> 'nopadding' instead of 'packed', then there's no need to emit code to
> handle unaligned loads.

You can add aligned(N) to increase the alignment again.

Andreas.

-- 
Andreas Schwab, SuSE Labs, schwab@...e.de
SuSE Linux Products GmbH, Maxfeldstraße 5, 90409 Nürnberg, Germany
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"And now for something completely different."
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