From mboxrd@z Thu Jan  1 00:00:00 1970
From: Peter Zijlstra <a.p.zijlstra@chello.nl>
Subject: [ofa-general] Re: [PATCH] mmu notifiers #v8 + xpmem
Date: Sun, 02 Mar 2008 17:23:58 +0100
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Cc: Nick Piggin <npiggin@suse.de>, linux-mm@kvack.org,
	Izik Eidus <izike@qumranet.com>, Kanoj Sarcar <kanojsarcar@yahoo.com>,
	Roland Dreier <rdreier@cisco.com>,
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To: Andrea Arcangeli <andrea@qumranet.com>
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On Sun, 2008-03-02 at 17:03 +0100, Andrea Arcangeli wrote:

> 4) Then finally the mmu_notifier_unregister must be dropped to make the
> mmu notifier sleep capable with RCU in the mmu_notifier() fast path.

Or require PREEMPTIBLE_RCU, that can handle sleeps..