linux-kernel - Re: [patch 02/10] emm: notifier logic

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Message-ID: <Pine.LNX.4.64.0804081320160.30874@schroedinger.engr.sgi.com>
Date:	Tue, 8 Apr 2008 13:23:33 -0700 (PDT)
From:	Christoph Lameter <clameter@....com>
To:	Andrea Arcangeli <andrea@...ranet.com>
cc:	Robin Holt <holt@....com>,
	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>,
	kvm-devel@...ts.sourceforge.net,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	general@...ts.openfabrics.org, steiner@....com,
	linux-kernel@...r.kernel.org, linux-mm@...ck.org
Subject: Re: [patch 02/10] emm: notifier logic

It may also be useful to allow invalidate_start() to fail in some contexts 
(try_to_unmap f.e., maybe if a certain flag is passed). This may allow the 
device to get out of tight situations (pending I/O f.e. or time out if 
there is no response for network communications). But then that 
complicates the API.

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