From patchwork Thu Jul 14 21:40:48 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ross Zwisler X-Patchwork-Id: 9230787 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id B12E360574 for ; Thu, 14 Jul 2016 22:31:53 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 9E140281DB for ; Thu, 14 Jul 2016 22:31:53 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 8F3AC282F5; Thu, 14 Jul 2016 22:31:53 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-4.2 required=2.0 tests=BAYES_00, RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from oss.sgi.com (oss.sgi.com [192.48.182.195]) (using TLSv1 with cipher DHE-RSA-CAMELLIA256-SHA (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 0B148281DB for ; Thu, 14 Jul 2016 22:31:52 +0000 (UTC) Received: from oss.sgi.com (localhost [IPv6:::1]) by oss.sgi.com (Postfix) with ESMTP id D6E2D7CA3; Thu, 14 Jul 2016 17:31:48 -0500 (CDT) X-Original-To: xfs@oss.sgi.com Delivered-To: xfs@oss.sgi.com Received: from relay.sgi.com (relay2.corp.sgi.com [137.38.102.29]) by oss.sgi.com (Postfix) with ESMTP id 371E07CA2 for ; Thu, 14 Jul 2016 17:31:47 -0500 (CDT) Received: from cuda.sgi.com (cuda2.sgi.com [192.48.176.25]) by relay2.corp.sgi.com (Postfix) with ESMTP id EE33E304059 for ; Thu, 14 Jul 2016 15:31:43 -0700 (PDT) X-ASG-Debug-ID: 1468535443-04cbb00f3000230001-NocioJ Received: from mga09.intel.com (mga09.intel.com [134.134.136.24]) by cuda.sgi.com with ESMTP id QV0RQ62BC2FmQFDu for ; Thu, 14 Jul 2016 15:30:43 -0700 (PDT) X-Barracuda-Envelope-From: ross.zwisler@linux.intel.com X-Barracuda-Effective-Source-IP: mga09.intel.com[134.134.136.24] X-Barracuda-Apparent-Source-IP: 134.134.136.24 X-ASG-Whitelist: Client Received: from fmsmga004.fm.intel.com ([10.253.24.48]) by orsmga102.jf.intel.com with ESMTP; 14 Jul 2016 14:40:55 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.28,364,1464678000"; d="scan'208";a="139414285" Received: from rzwisler-desk.amr.corp.intel.com (HELO phyrexia.intel.com) ([10.252.202.232]) by fmsmga004.fm.intel.com with ESMTP; 14 Jul 2016 14:40:53 -0700 From: Ross Zwisler To: linux-kernel@vger.kernel.org Subject: [PATCH 1/2] dax: some small updates to dax.txt documentation Date: Thu, 14 Jul 2016 15:40:48 -0600 X-ASG-Orig-Subj: [PATCH 1/2] dax: some small updates to dax.txt documentation Message-Id: <20160714214049.20075-1-ross.zwisler@linux.intel.com> X-Mailer: git-send-email 2.9.0 X-Barracuda-Connect: mga09.intel.com[134.134.136.24] X-Barracuda-Start-Time: 1468535443 X-Barracuda-URL: https://192.48.176.25:443/cgi-mod/mark.cgi X-Barracuda-Scan-Msg-Size: 1457 X-Virus-Scanned: by bsmtpd at sgi.com X-Barracuda-BRTS-Status: 1 Cc: Theodore Ts'o , Andrew Morton , Jonathan Corbet , linux-doc@vger.kernel.org, xfs@oss.sgi.com, linux-nvdimm@lists.01.org, Andreas Dilger , Alexander Viro , Jan Kara , linux-fsdevel@vger.kernel.org, Matthew Wilcox , Ross Zwisler , linux-ext4@vger.kernel.org, Dan Williams X-BeenThere: xfs@oss.sgi.com X-Mailman-Version: 2.1.14 Precedence: list List-Id: XFS Filesystem from SGI List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Errors-To: xfs-bounces@oss.sgi.com Sender: xfs-bounces@oss.sgi.com X-Virus-Scanned: ClamAV using ClamSMTP These are originally from Matthew Wilcox and were part of his huge "mm,fs,dax: Change ->pmd_fault to ->huge_fault" patch that was part of PUD support. I'm breaking these small changes out as they stand on their own and add useful information to Documentation/filesystems/dax.txt. Signed-off-by: Ross Zwisler --- Documentation/filesystems/dax.txt | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/Documentation/filesystems/dax.txt b/Documentation/filesystems/dax.txt index ce4587d..0c16a22 100644 --- a/Documentation/filesystems/dax.txt +++ b/Documentation/filesystems/dax.txt @@ -49,6 +49,7 @@ These block devices may be used for inspiration: - axonram: Axon DDR2 device driver - brd: RAM backed block device driver - dcssblk: s390 dcss block device driver +- pmem: NVDIMM persistent memory driver Implementation Tips for Filesystem Writers @@ -75,8 +76,9 @@ calls to get_block() (for example by a page-fault racing with a read() or a write()) work correctly. These filesystems may be used for inspiration: -- ext2: the second extended filesystem, see Documentation/filesystems/ext2.txt -- ext4: the fourth extended filesystem, see Documentation/filesystems/ext4.txt +- ext2: see Documentation/filesystems/ext2.txt +- ext4: see Documentation/filesystems/ext4.txt +- xfs: see Documentation/filesystems/xfs.txt Handling Media Errors