Date: Tue, 22 Jan 2008 22:10:47 +0000 (GMT)
From: Hugh Dickins <hugh@veritas.com>
To: Andrea Arcangeli <andrea@qumranet.com>
cc: Peter Zijlstra <a.p.zijlstra@chello.nl>, Izik Eidus <izike@qumranet.com>,
       Rik van Riel <riel@redhat.com>, linux-kernel@vger.kernel.org,
       linux-mm@kvack.org, kvm-devel@lists.sourceforge.net,
       Avi Kivity <avi@qumranet.com>, clameter@sgi.com,
       daniel.blueman@quadrics.com, holt@sgi.com, steiner@sgi.com,
       Andrew Morton <akpm@osdl.org>, Nick Piggin <npiggin@suse.de>,
       Benjamin Herrenschmidt <benh@kernel.crashing.org>
Subject: Re: [PATCH] mmu notifiers #v3
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On Tue, 22 Jan 2008, Andrea Arcangeli wrote:
> 
> Then I will have to update KVM so that it will free the kvm structure
> after waiting a quiescent point to avoid kernel crashing memory
> corruption after applying your changes to the mmu notifier.

It may not be suitable (I've not looked into your needs), but consider
SLAB_DESTROY_BY_RCU: it might give you the easiest way to do that.

Hugh
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