From mboxrd@z Thu Jan 1 00:00:00 1970 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=-2.5 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS, URIBL_BLOCKED,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 429F7C43381 for ; Fri, 8 Mar 2019 09:19:09 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 13C1220811 for ; Fri, 8 Mar 2019 09:19:09 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="DnhcDlB8" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 13C1220811 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=lst.de Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:References: Message-ID:Subject:To:From:Date:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=TgCOHNCQrH9Cm6dsB8T0FuWumw6Iu5PNkkKxderJNHs=; b=DnhcDlB8IBOzQA l5r9HiP/s6CQMe3hZXk4nuP/ZsO1RED+ZP2DIyLuo2I6nVCt9MM/R7Qgl9UGVFtyjatCYbuNHoWWz /4dPh0L07euEZjBGgiE5KSBoJLftgbIatjMJsB+4Nxt9ErpDxFDuLQxwCs2c5T+A1NIaPoJQhwElh 8iHoSG3O5ThgGntHNdGn2ym8OmpwAl6mnFfJPljpb/wUsGmGPv7C2LVTwvbTTR9MFUmJP026q1TbR l/rGLWmptvFKDkufvIrTl+iKbuWkik8UNReJ86N7upEu/RO/3AtsuU/iQNTaLuUagxNKNb3tuQT6a MKJoNUzbXpsOtCpgRJWQ==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1h2Beg-0004ta-K8; Fri, 08 Mar 2019 09:19:02 +0000 Received: from verein.lst.de ([213.95.11.211] helo=newverein.lst.de) by bombadil.infradead.org with esmtps (Exim 4.90_1 #2 (Red Hat Linux)) id 1h2Bed-0004sg-K9 for linux-arm-kernel@lists.infradead.org; Fri, 08 Mar 2019 09:19:01 +0000 Received: by newverein.lst.de (Postfix, from userid 2407) id CDCAF68C4E; Fri, 8 Mar 2019 10:18:53 +0100 (CET) Date: Fri, 8 Mar 2019 10:18:53 +0100 From: Christoph Hellwig To: Ulf Hansson Subject: Re: remove block layer bounce buffering for MMC v2 Message-ID: <20190308091853.GA14021@lst.de> References: <20190212072528.13167-1-hch@lst.de> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.17 (2007-11-01) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190308_011859_811191_EB7BE3AD X-CRM114-Status: UNSURE ( 9.92 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Aaro Koskinen , Nicolas Pitre , "linux-mmc@vger.kernel.org" , Russell King , Linux Kernel Mailing List , "list@263.net:IOMMU DRIVERS , Joerg Roedel , " , Ben Dooks , linux-omap , Christoph Hellwig , Linux ARM Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Mon, Feb 25, 2019 at 02:54:13PM +0100, Ulf Hansson wrote: > This looks good to me, however the lack of feedback/tests worries me a > bit. So, unless you think it's a bad idea, I intend to apply this when > v5.1 rc1 is out, which allows a lengthy test period in linux-next. Please don't rush to merge this. Based on a talk to some folks I have an idea for a sg iterator that can hide the kmapping from the drivers, which should allow for some less scary driver code and clean this up a bit further. _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel