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=-2.0 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_SANE_1 autolearn=no 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 7DFA5C2D0BF for ; Thu, 5 Dec 2019 17:37:45 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 4D99021835 for ; Thu, 5 Dec 2019 17:37:45 +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="tqBl522O" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730157AbfLERho (ORCPT ); Thu, 5 Dec 2019 12:37:44 -0500 Received: from bombadil.infradead.org ([198.137.202.133]:43182 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729598AbfLERho (ORCPT ); Thu, 5 Dec 2019 12:37:44 -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=gV5bNkEwBW3OMSAGQGkznh3MP6+M3SnlgiG4sr6SzbU=; b=tqBl522OzgsBdx0pQUVwFHHv/ 11Ak81mZQsTdymKLKQfps4PtDanKgVfilOcEThHGUhqYe9LmkSyLir+3wjqZRqr7sCTvemqml1Mxa p8LZV6JxZ+xNQ8LCkd80dad84HZvr3mJHg6C37j1UO12xk5yTICdhQzg2K11rxRGm/Tk+hDQsCto+ FqNgWoXWEYJDLsN6+aIMRgTEad3oXdyzPArZ5k6qkEVxA82xWpYYsbcZB7BzgkDaNJp8D1uD3WYoV 4VdMMqSBBw+EZSFPBqOk6N1EVa7e5EmbsCJv+gvrmHk1cMNiiik/31IibiGUFw75Rw7kCMzZ8oaAj 6wLqBSG2g==; Received: from hch by bombadil.infradead.org with local (Exim 4.92.3 #3 (Red Hat Linux)) id 1icv4R-0008Rv-UO; Thu, 05 Dec 2019 17:37:43 +0000 Date: Thu, 5 Dec 2019 09:37:43 -0800 From: Christoph Hellwig To: Johannes Thumshirn Cc: Christoph Hellwig , Goldwyn Rodrigues , linux-btrfs@vger.kernel.org, linux-fsdevel@vger.kernel.org, darrick.wong@oracle.com, fdmanana@kernel.org, nborisov@suse.com, dsterba@suse.cz, Goldwyn Rodrigues Subject: Re: [PATCH 4/8] btrfs: Switch to iomap_dio_rw() for dio Message-ID: <20191205173743.GB32341@infradead.org> References: <20191205155630.28817-1-rgoldwyn@suse.de> <20191205155630.28817-5-rgoldwyn@suse.de> <20191205171815.GA19670@Johanness-MacBook-Pro.local> <20191205171959.GA8586@infradead.org> <20191205173242.GB19670@Johanness-MacBook-Pro.local> <20191205173346.GA26969@infradead.org> <20191205173648.GC19670@Johanness-MacBook-Pro.local> <20191205173728.GA32341@infradead.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20191205173728.GA32341@infradead.org> User-Agent: Mutt/1.12.1 (2019-06-15) X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html Sender: linux-fsdevel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org On Thu, Dec 05, 2019 at 09:37:28AM -0800, Christoph Hellwig wrote: > On Thu, Dec 05, 2019 at 06:36:48PM +0100, Johannes Thumshirn wrote: > > To hide the implementation details and not provoke someone yelling layering > > violation? > > The only layering is ->direct_IO, and this is a step to get rid of that > junk.. s/layering/layering violation/