From mboxrd@z Thu Jan  1 00:00:00 1970
From: Robin Holt <holt@sgi.com>
Subject: [ofa-general] Re: [PATCH 0 of 9] mmu notifier #v12
Date: Tue, 22 Apr 2008 08:01:20 -0500
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Cc: Nick Piggin <npiggin@suse.de>, Jack Steiner <steiner@sgi.com>,
	Peter Zijlstra <a.p.zijlstra@chello.nl>, kvm-devel@lists.sourceforge.net,
	Kanoj Sarcar <kanojsarcar@yahoo.com>,
	Roland Dreier <rdreier@cisco.com>, linux-kernel@vger.kernel.org,
	Avi Kivity <avi@qumranet.com>, linux-mm@kvack.org,
	Robin Holt <holt@sgi.com>, general@lists.openfabrics.org,
	Hugh Dickins <hugh@veritas.com>, akpm@linux-foundation.org,
	Christoph Lameter <clameter@sgi.com>
To: Andrea Arcangeli <andrea@qumranet.com>
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On Tue, Apr 22, 2008 at 02:00:56PM +0200, Andrea Arcangeli wrote:
> On Tue, Apr 22, 2008 at 09:20:26AM +0200, Andrea Arcangeli wrote:
> >     invalidate_range_start {
> > 	spin_lock(&kvm->mmu_lock);
> > 
> > 	kvm->invalidate_range_count++;
> > 	rmap-invalidate of sptes in range
> > 
> 
> 	write_seqlock; write_sequnlock;

I don't think you need it here since invalidate_range_count is already
elevated which will accomplish the same effect.

Thanks,
Robin