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Date: Wed, 18 Feb 2004 21:10:35 +0000
From: Christoph Hellwig <hch@infradead.org>
To: "Paul E. McKenney" <paulmck@us.ibm.com>
Cc: Arjan van de Ven <arjanv@redhat.com>, Andrew Morton <akpm@osdl.org>,
       hch@infradead.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org
Subject: Re: Non-GPL export of invalidate_mmap_range
Message-ID: <20040218211035.A13866@infradead.org>
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In-Reply-To: <20040218140021.GB1269@us.ibm.com>; from paulmck@us.ibm.com on Wed, Feb 18, 2004 at 06:00:21AM -0800
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On Wed, Feb 18, 2004 at 06:00:21AM -0800, Paul E. McKenney wrote:
> There is a small shim layer required, but the bulk of the code
> implementing GPFS is common between AIX and Linux.  It was on AIX
> first by quite a few years.

Small glue layer?  Unfortunately ibm took it off the website, but
the thing is damn huge.

> > it only uses "core unix" apis ?
> 
> If they are made available, yes.  That is the point of this patch,
> after all.  ;-)

No, that's wrong.  It patches the syscall table and plays evilish
tricks with lowlevel MM code.

> > It doesn't require knowledge of deep and changing internals ? *buzz*
> 
> That is indeed the idea.

The one on the ibm website a little ago did.  You're free to upload
a new one that clearly doesn't need all this, but..