linux-kernel - Re: [patch 6/6] mmu_notifier: Add invalidate

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Message-ID: <Pine.LNX.4.64.0801291200550.25300@schroedinger.engr.sgi.com>
Date:	Tue, 29 Jan 2008 12:02:01 -0800 (PST)
From:	Christoph Lameter <clameter@....com>
To:	Robin Holt <holt@....com>
cc:	Andrea Arcangeli <andrea@...ranet.com>,
	Avi Kivity <avi@...ranet.com>, Izik Eidus <izike@...ranet.com>,
	Nick Piggin <npiggin@...e.de>, kvm-devel@...ts.sourceforge.net,
	Benjamin Herrenschmidt <benh@...nel.crashing.org>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>, steiner@....com,
	linux-kernel@...r.kernel.org, linux-mm@...ck.org,
	daniel.blueman@...drics.com, Hugh Dickins <hugh@...itas.com>
Subject: Re: [patch 6/6] mmu_notifier: Add invalidate_all()

On Tue, 29 Jan 2008, Robin Holt wrote:

> What is the status of getting invalidate_all adjusted to indicate a need
> to also call _release?

Release is only called if the mmu_notifier is still registered. If you 
take it out on invalidate_all then there will be no call to release 
(provided you deal with the RCU issues).

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