linux-kernel - Re: [PATCH 29/30] microblaze_mmu

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Message-ID: <20090427121556.GA9469@uranus.ravnborg.org>
Date:	Mon, 27 Apr 2009 14:15:56 +0200
From:	Sam Ravnborg <sam@...nborg.org>
To:	Arnd Bergmann <arnd@...db.de>
Cc:	monstr@...str.eu, Christoph Hellwig <hch@...radead.org>,
	linux-kernel@...r.kernel.org, john.williams@...alogix.com
Subject: Re: [PATCH 29/30] microblaze_mmu_v1: stat.h MMU update

On Mon, Apr 27, 2009 at 01:57:00PM +0200, Arnd Bergmann wrote:
> On Monday 27 April 2009, Michal Simek wrote:
> > Christoph Hellwig wrote:
> 
> > > Given that microblaze only got merged in the 2.6.30 window I would
> > > suggest fixing up the nommu variant.
> > 
> > ok. Let's do it.
> > Here are stats structures from xtensa.
> > 
> > Arnd: Is it ok for asm-generic?
> 
> I carry a (not cleaned up) tree with changes in my playground
> (git.kernel.org/pub/scm/linux/kernel/git/arnd/playground.git)
> as branch generic-microblaze, where I try to use generic
> headers for everything. See below for my version of stat.h.
> In particular, it uses 64 bit st_size and st_blocks, but 32 bit
> time fields. It also defines struct stat to be identical to
> struct stat64 on 64 bit systems. 32 bit systems should only
> provide the stat64 syscalls, so the shorter types in struct
> stat do not hurt.

Why not use __u64/__u32 (and s32/s64 where appropriate)?
Historical baggage or a techncal reason?

	Sam
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