linux-kernel - Re: [kvm-devel] [PATCH] export notifier #1

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Message-ID: <Pine.LNX.4.64.0801221640010.3329@schroedinger.engr.sgi.com>
Date:	Tue, 22 Jan 2008 16:40:50 -0800 (PST)
From:	Christoph Lameter <clameter@....com>
To:	Benjamin Herrenschmidt <benh@...nel.crashing.org>
cc:	Andrea Arcangeli <andrea@...ranet.com>,
	Avi Kivity <avi@...ranet.com>, Izik Eidus <izike@...ranet.com>,
	Andrew Morton <akpm@...l.org>, Nick Piggin <npiggin@...e.de>,
	kvm-devel@...ts.sourceforge.net, steiner@....com,
	linux-kernel@...r.kernel.org, linux-mm@...ck.org,
	daniel.blueman@...drics.com, holt@....com,
	Hugh Dickins <hugh@...itas.com>
Subject: Re: [kvm-devel] [PATCH] export notifier #1

On Wed, 23 Jan 2008, Benjamin Herrenschmidt wrote:

> > - anon_vma/inode and pte locks are held during callbacks.
> 
> So how does that fix the problem of sleeping then ?

The locks are taken in the mmu_ops patch. This patch does not hold them 
while performing the callbacks.

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