Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.2 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS,USER_AGENT_MUTT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 12ED7C07E85 for ; Tue, 11 Dec 2018 14:02:12 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id C94602084A for ; Tue, 11 Dec 2018 14:02:11 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="D7PMndIO" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org C94602084A Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=infradead.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-nfs-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726454AbeLKOCL (ORCPT ); Tue, 11 Dec 2018 09:02:11 -0500 Received: from bombadil.infradead.org ([198.137.202.133]:35778 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726350AbeLKOCK (ORCPT ); Tue, 11 Dec 2018 09:02:10 -0500 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20170209; h=In-Reply-To:Content-Type:MIME-Version :References:Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Id: List-Help:List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=uyTi6/3U5lfuUl+rBMOCJh40kAn4z4JqTwzTW23qkZ8=; b=D7PMndIO+CTSNUeKbFj2qNBvS p8GQvYaqemXXS6zvSPBZSa6GAImHa9p4vE8exgsfa9nwdC8l6WiBE7tUOtcGQBAx9NGs6ubdIvbX3 4s445yzJP6tSoebhRGwe2LKJuQeUew9sVsLvwtRBSiVNKg3iqiXJE7iOJ9cMgo1KlVnmBz9ov4kka +95Bo4On7MxlfT18X7D6gxlCKgzWU8b2gqTlypnD7/imeXodKy8AgoE9hAWQO5esJ839X5X/OMYEE BUqWEqFXalE1qyLYtNOrx5EwZBueSZSxE+gBa724CuYuOA9uaOt0P320nBjQ5PXhTUJ8AcbE+B+B+ O9AvOAX6Q==; Received: from hch by bombadil.infradead.org with local (Exim 4.90_1 #2 (Red Hat Linux)) id 1gWibw-0001LO-OO; Tue, 11 Dec 2018 14:02:08 +0000 Date: Tue, 11 Dec 2018 06:02:08 -0800 From: Christoph Hellwig To: Chuck Lever Cc: anna.schumaker@netapp.com, linux-rdma@vger.kernel.org, linux-nfs@vger.kernel.org Subject: Re: [PATCH v3 03/24] xprtrdma: Remove support for FMR memory registration Message-ID: <20181211140208.GB30471@infradead.org> References: <20181210161723.4198.51071.stgit@manet.1015granger.net> <20181210162934.4198.90529.stgit@manet.1015granger.net> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20181210162934.4198.90529.stgit@manet.1015granger.net> User-Agent: Mutt/1.9.2 (2017-12-15) X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html Sender: linux-nfs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-nfs@vger.kernel.org Can we also kill off rpcrdma_memreg_ops now? Indirect calls are suprisingly expensive, especially in our post-spectre world, and xprtrdma always seemed a little odd with this supper generic abstraction.