Return-Path: Received: from quartz.orcorp.ca ([184.70.90.242]:33648 "EHLO quartz.orcorp.ca" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752647AbbGTWRG (ORCPT ); Mon, 20 Jul 2015 18:17:06 -0400 Date: Mon, 20 Jul 2015 16:17:03 -0600 From: Jason Gunthorpe To: Tom Talpey Cc: Steve Wise , "'Chuck Lever'" , linux-rdma@vger.kernel.org, linux-nfs@vger.kernel.org Subject: Re: [PATCH v3 05/15] xprtrdma: Remove last ib_reg_phys_mr() call site Message-ID: <20150720221703.GB11356@obsidianresearch.com> References: <20150720185624.10997.51574.stgit@manet.1015granger.net> <20150720190311.10997.12636.stgit@manet.1015granger.net> <55AD5B48.3010906@talpey.com> <20150720210544.GA9655@obsidianresearch.com> <015101d0c331$69e31d10$3da95730$@opengridcomputing.com> <55AD7065.8040809@talpey.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii In-Reply-To: <55AD7065.8040809@talpey.com> Sender: linux-nfs-owner@vger.kernel.org List-ID: On Mon, Jul 20, 2015 at 03:04:21PM -0700, Tom Talpey wrote: > B) why bother to check? Are machines with <4GB interesting, and worth > supporting a special optimization? mainline drivers shouldn't silently malfunction. Jason