From patchwork Thu Aug 25 23:50:05 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Darrick J. Wong" X-Patchwork-Id: 9300521 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 6804560757 for ; Thu, 25 Aug 2016 23:51:02 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 5931F29414 for ; Thu, 25 Aug 2016 23:51:02 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 4D9A029416; Thu, 25 Aug 2016 23:51:02 +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, UNPARSEABLE_RELAY 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 B1C9529414 for ; Thu, 25 Aug 2016 23:51:01 +0000 (UTC) Received: from oss.sgi.com (localhost [IPv6:::1]) by oss.sgi.com (Postfix) with ESMTP id DE46381A3; Thu, 25 Aug 2016 18:50:14 -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 3E9DC81A1 for ; Thu, 25 Aug 2016 18:50:13 -0500 (CDT) Received: from cuda.sgi.com (cuda2.sgi.com [192.48.176.25]) by relay2.corp.sgi.com (Postfix) with ESMTP id 11250304043 for ; Thu, 25 Aug 2016 16:50:13 -0700 (PDT) X-ASG-Debug-ID: 1472169011-0bf57b5313209a50001-NocioJ Received: from aserp1040.oracle.com (aserp1040.oracle.com [141.146.126.69]) by cuda.sgi.com with ESMTP id 4XdIANjMATwyd3ST (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NO) for ; Thu, 25 Aug 2016 16:50:11 -0700 (PDT) X-Barracuda-Envelope-From: darrick.wong@oracle.com X-Barracuda-Effective-Source-IP: aserp1040.oracle.com[141.146.126.69] X-Barracuda-Apparent-Source-IP: 141.146.126.69 Received: from aserv0021.oracle.com (aserv0021.oracle.com [141.146.126.233]) by aserp1040.oracle.com (Sentrion-MTA-4.3.2/Sentrion-MTA-4.3.2) with ESMTP id u7PNoAtl024761 (version=TLSv1 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK); Thu, 25 Aug 2016 23:50:10 GMT Received: from aserv0121.oracle.com (aserv0121.oracle.com [141.146.126.235]) by aserv0021.oracle.com (8.13.8/8.13.8) with ESMTP id u7PNoAJK009773 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK); Thu, 25 Aug 2016 23:50:10 GMT Received: from abhmp0011.oracle.com (abhmp0011.oracle.com [141.146.116.17]) by aserv0121.oracle.com (8.13.8/8.13.8) with ESMTP id u7PNo9vK001281; Thu, 25 Aug 2016 23:50:09 GMT Received: from localhost (/10.145.178.207) by default (Oracle Beehive Gateway v4.0) with ESMTP ; Thu, 25 Aug 2016 16:50:08 -0700 Subject: [PATCH 33/71] xfs: support FS_XFLAG_REFLINK on reflink filesystems From: "Darrick J. Wong" X-ASG-Orig-Subj: [PATCH 33/71] xfs: support FS_XFLAG_REFLINK on reflink filesystems To: david@fromorbit.com, darrick.wong@oracle.com Date: Thu, 25 Aug 2016 16:50:05 -0700 Message-ID: <147216900528.4420.3049697376537013476.stgit@birch.djwong.org> In-Reply-To: <147216879156.4420.2446767701729565218.stgit@birch.djwong.org> References: <147216879156.4420.2446767701729565218.stgit@birch.djwong.org> User-Agent: StGit/0.17.1-dirty MIME-Version: 1.0 X-Source-IP: aserv0021.oracle.com [141.146.126.233] X-Barracuda-Connect: aserp1040.oracle.com[141.146.126.69] X-Barracuda-Start-Time: 1472169011 X-Barracuda-Encrypted: ECDHE-RSA-AES256-GCM-SHA384 X-Barracuda-URL: https://192.48.176.25:443/cgi-mod/mark.cgi X-Barracuda-Scan-Msg-Size: 2436 X-Virus-Scanned: by bsmtpd at sgi.com X-Barracuda-BRTS-Status: 1 X-Barracuda-Spam-Score: 0.00 X-Barracuda-Spam-Status: No, SCORE=0.00 using per-user scores of TAG_LEVEL=1000.0 QUARANTINE_LEVEL=1000.0 KILL_LEVEL=2.7 tests=BSF_SC0_MISMATCH_TO, UNPARSEABLE_RELAY X-Barracuda-Spam-Report: Code version 3.2, rules version 3.2.3.32328 Rule breakdown below pts rule name description ---- ---------------------- -------------------------------------------------- 0.00 BSF_SC0_MISMATCH_TO Envelope rcpt doesn't match header 0.00 UNPARSEABLE_RELAY Informational: message has unparseable relay lines Cc: linux-xfs@vger.kernel.org, xfs@oss.sgi.com 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: , Errors-To: xfs-bounces@oss.sgi.com Sender: xfs-bounces@oss.sgi.com X-Virus-Scanned: ClamAV using ClamSMTP Add support for reporting the "reflink" inode flag in the XFS-specific getxflags ioctl, and allow the user to clear the flag if file size is zero. v2: Move the reflink flag out of the way of the DAX flag, and add the new cowextsize flag. v3: do not report (or allow changes to) FL_NOCOW_FL, since we don't support a flag to prevent CoWing and the reflink flag is a poor proxy. We'll try to design away the need for the NOCOW flag. Signed-off-by: Darrick J. Wong --- include/darwin.h | 8 ++++++++ include/freebsd.h | 7 +++++++ include/irix.h | 7 +++++++ include/linux.h | 8 ++++++++ 4 files changed, 30 insertions(+) diff --git a/include/darwin.h b/include/darwin.h index 140386a..71a63a1 100644 --- a/include/darwin.h +++ b/include/darwin.h @@ -320,4 +320,12 @@ struct fsxattr { #endif +#ifndef FS_XFLAG_REFLINK +#define FS_XFLAG_REFLINK 0x00010000 /* file is reflinked */ +#endif + +#ifndef FS_XFLAG_COWEXTSIZE +#define FS_XFLAG_COWEXTSIZE 0x00020000 /* CoW extent size allocator hint */ +#endif + #endif /* __XFS_DARWIN_H__ */ diff --git a/include/freebsd.h b/include/freebsd.h index 668dcea..e8970a5 100644 --- a/include/freebsd.h +++ b/include/freebsd.h @@ -209,5 +209,12 @@ struct fsxattr { #endif +#ifndef FS_XFLAG_REFLINK +#define FS_XFLAG_REFLINK 0x00010000 /* file is reflinked */ +#endif + +#ifndef FS_XFLAG_COWEXTSIZE +#define FS_XFLAG_COWEXTSIZE 0x00020000 /* CoW extent size allocator hint */ +#endif #endif /* __XFS_FREEBSD_H__ */ diff --git a/include/irix.h b/include/irix.h index 8b9d588..fea7c7c 100644 --- a/include/irix.h +++ b/include/irix.h @@ -454,6 +454,13 @@ struct fsxattr { #endif +#ifndef FS_XFLAG_REFLINK +#define FS_XFLAG_REFLINK 0x00010000 /* file is reflinked */ +#endif + +#ifndef FS_XFLAG_COWEXTSIZE +#define FS_XFLAG_COWEXTSIZE 0x00020000 /* CoW extent size allocator hint */ +#endif /** * Abstraction of mountpoints. diff --git a/include/linux.h b/include/linux.h index 1663930..67337d6 100644 --- a/include/linux.h +++ b/include/linux.h @@ -209,4 +209,12 @@ struct fsxattr { #endif +#ifndef FS_XFLAG_REFLINK +#define FS_XFLAG_REFLINK 0x00010000 /* file is reflinked */ +#endif + +#ifndef FS_XFLAG_COWEXTSIZE +#define FS_XFLAG_COWEXTSIZE 0x00020000 /* CoW extent size allocator hint */ +#endif + #endif /* __XFS_LINUX_H__ */