Received: by 2002:ac0:a594:0:0:0:0:0 with SMTP id m20-v6csp1034383imm; Wed, 23 May 2018 09:14:01 -0700 (PDT) X-Google-Smtp-Source: AB8JxZofbOtGQ1HCMSzDWM0XP1AbLeS3ae+gIeG1T0VjlK3bdNm5EP0P6HkFI4V8R/qxPV5EJiwP X-Received: by 2002:a17:902:28ab:: with SMTP id f40-v6mr3621021plb.208.1527092040950; Wed, 23 May 2018 09:14:00 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1527092040; cv=none; d=google.com; s=arc-20160816; b=XbvaFjGFGGN26Xd9TX3LmzLyKjRrHHudkvOqDPiOLjZopI2OVGZAzQssY3huHBzdXo Yui4+FhKVf1x/8uUWcr26C802W5Lgnr6HHboP7lRkRtXaiPO8HjgrgGVwrkoT1Co0dXx KkK4w9dUfYMw6VJUFnxV1Ykzv05gk6ZDw6vNhjAJV/2xqsoc2agwDqegq1c/e5Bo784F WVsTUdLmxKKUFaU2qxGOnmFyQDjQdwkyJy2pQvZceSKStEabS17aZo7MUppnSwKMCOFe oJMy8hbNZOi2VHT2iK8rE4jMMjZ1MwGmFN3OiiyerHSbxv4NMn9Ha/K37dbV0Qyw74gl lBNw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:user-agent:in-reply-to :content-disposition:mime-version:references:mail-followup-to :message-id:subject:cc:to:from:date:arc-authentication-results; bh=yA6yUOBwnt3TCvQiFhLddP/vlj5/Q6v37b6dBuNu1FM=; b=rbn92S3Ci45cJc2/9nKcaHrT8pxFqMBeTVTWOUfbpSV2ioi0Bc09oUX3KivY4ckJ5V SbcPGn9IJSkRWkJZ5WJa1gk5D/hVPGZkB0PPzIoJZ5JPSijq2FrIn06zPLNKrrmfBmiX uMLEESrtAZXcXlO1QbV05MipF1n9YS58xhz7VcUIrN0GthL2VKaUENCQkxpEX5zNtgSF AYIv04dAipYWBhR9R7dxLHK06xlfHmAN+6POZTxpF93OKHcTKRwp/KyVUB7/bm2iYr5K pCZaafLvkF/W2pNgbQMNkM/2Rwy7/NmVQYghratDF7qJg6JWs+ydooucgYzPXXsghtXm jzww== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=intel.com Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id h8-v6si299502pll.58.2018.05.23.09.13.45; Wed, 23 May 2018 09:14:00 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=intel.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754701AbeEWQNV (ORCPT + 99 others); Wed, 23 May 2018 12:13:21 -0400 Received: from mga14.intel.com ([192.55.52.115]:43108 "EHLO mga14.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751646AbeEWQNU (ORCPT ); Wed, 23 May 2018 12:13:20 -0400 X-Amp-Result: UNKNOWN X-Amp-Original-Verdict: FILE UNKNOWN X-Amp-File-Uploaded: False Received: from fmsmga003.fm.intel.com ([10.253.24.29]) by fmsmga103.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 23 May 2018 09:13:19 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.49,433,1520924400"; d="scan'208";a="51590838" Received: from theros.lm.intel.com (HELO linux.intel.com) ([10.232.112.164]) by FMSMGA003.fm.intel.com with ESMTP; 23 May 2018 09:13:19 -0700 Date: Wed, 23 May 2018 10:13:19 -0600 From: Ross Zwisler To: Dan Williams Cc: linux-nvdimm@lists.01.org, Ross Zwisler , Mike Snitzer , Christoph Hellwig , linux-kernel@vger.kernel.org, tony.luck@intel.com, linux-fsdevel@vger.kernel.org Subject: Re: [PATCH v3 6/9] dax: introduce a ->copy_to_iter dax operation Message-ID: <20180523161319.GA29519@linux.intel.com> Mail-Followup-To: Ross Zwisler , Dan Williams , linux-nvdimm@lists.01.org, Mike Snitzer , Christoph Hellwig , linux-kernel@vger.kernel.org, tony.luck@intel.com, linux-fsdevel@vger.kernel.org References: <152539236455.31796.7516599166555186700.stgit@dwillia2-desk3.amr.corp.intel.com> <152539239729.31796.4765429575408958580.stgit@dwillia2-desk3.amr.corp.intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <152539239729.31796.4765429575408958580.stgit@dwillia2-desk3.amr.corp.intel.com> User-Agent: Mutt/1.9.2 (2017-12-15) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, May 03, 2018 at 05:06:37PM -0700, Dan Williams wrote: > Similar to the ->copy_from_iter() operation, a platform may want to > deploy an architecture or device specific routine for handling reads > from a dax_device like /dev/pmemX. On x86 this routine will point to a > machine check safe version of copy_to_iter(). For now, add the plumbing > to device-mapper and the dax core. > > Cc: Ross Zwisler > Cc: Mike Snitzer > Cc: Christoph Hellwig > Signed-off-by: Dan Williams Looks good to me. Reviewed-by: Ross Zwisler