Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932537AbYB1BKh (ORCPT ); Wed, 27 Feb 2008 20:10:37 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1758837AbYB1BK3 (ORCPT ); Wed, 27 Feb 2008 20:10:29 -0500 Received: from host36-195-149-62.serverdedicati.aruba.it ([62.149.195.36]:44901 "EHLO mx.cpushare.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757029AbYB1BK2 (ORCPT ); Wed, 27 Feb 2008 20:10:28 -0500 Date: Thu, 28 Feb 2008 02:10:20 +0100 From: Andrea Arcangeli To: Christoph Lameter Cc: Nick Piggin , akpm@linux-foundation.org, Robin Holt , Avi Kivity , Izik Eidus , kvm-devel@lists.sourceforge.net, Peter Zijlstra , general@lists.openfabrics.org, Steve Wise , Roland Dreier , Kanoj Sarcar , steiner@sgi.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org, daniel.blueman@quadrics.com Subject: Re: [patch 2/6] mmu_notifier: Callbacks to invalidate address ranges Message-ID: <20080228011020.GG8091@v2.random> References: <20080215064859.384203497@sgi.com> <20080215064932.620773824@sgi.com> <200802201008.49933.nickpiggin@yahoo.com.au> <20080228001104.GB8091@v2.random> <20080228005249.GF8091@v2.random> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 662 Lines: 12 On Wed, Feb 27, 2008 at 05:03:21PM -0800, Christoph Lameter wrote: > RDMA works across a network and I would assume that it needs confirmation > that a connection has been torn down before pages can be unmapped. Depends on the latency of the network, for example with page pinning it can even try to reduce the wait time, by tearing down the mapping in range_begin and spin waiting the ack only later in range_end. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/