linux-kernel - Re: [PATCH 2/3] fsstack: Generic get/set lower object functions

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Message-ID: <20061103035130.GC13499@filer.fsl.cs.sunysb.edu>
Date:	Thu, 2 Nov 2006 22:51:30 -0500
From:	Josef Sipek <jsipek@....cs.sunysb.edu>
To:	Mark Williamson <mark.williamson@...cam.ac.uk>
Cc:	Trond Myklebust <trond.myklebust@....uio.no>,
	linux-kernel@...r.kernel.org,
	Pekka Enberg <penberg@...helsinki.fi>,
	Michael Halcrow <mhalcrow@...ibm.com>,
	Erez Zadok <ezk@...sunysb.edu>,
	Christoph Hellwig <hch@...radead.org>,
	Al Viro <viro@....linux.org.uk>, Andrew Morton <akpm@...l.org>,
	linux-fsdevel@...r.kernel.org
Subject: Re: [PATCH 2/3] fsstack: Generic get/set lower object functions

On Fri, Nov 03, 2006 at 03:45:50AM +0000, Mark Williamson wrote:
> > > Why are you defining all these structs that are just wrapping unions?
> >
> > The reason for the union is simple...
...
> I guess that having a union foo * rather than a struct foo * would be a bit 
> unconventional in the kernel.  The named struct / anonymous union combo does 
> hide the union as merely an implementation detail, which is nice.  Was this 
> your motivation?

That's exactly it. Save space & hide the details.

Josef "Jeff" Sipek.

-- 
Once you have their hardware. Never give it back.
(The First Rule of Hardware Acquisition)
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