From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from relay.sgi.com (relay2.corp.sgi.com [137.38.102.29]) by oss.sgi.com (Postfix) with ESMTP id B38698157 for ; Sat, 19 Dec 2015 03:04:27 -0600 (CST) Received: from cuda.sgi.com (cuda3.sgi.com [192.48.176.15]) by relay2.corp.sgi.com (Postfix) with ESMTP id A4FF1304062 for ; Sat, 19 Dec 2015 01:04:27 -0800 (PST) Received: from aserp1040.oracle.com (aserp1040.oracle.com [141.146.126.69]) by cuda.sgi.com with ESMTP id 3klxFjtK6Gy359hI (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NO) for ; Sat, 19 Dec 2015 01:04:26 -0800 (PST) Subject: [PATCH 72/76] xfs: recognize the reflink feature bit From: "Darrick J. Wong" Date: Sat, 19 Dec 2015 01:04:23 -0800 Message-ID: <20151219090423.12713.20575.stgit@birch.djwong.org> In-Reply-To: <20151219085622.12713.88678.stgit@birch.djwong.org> References: <20151219085622.12713.88678.stgit@birch.djwong.org> MIME-Version: 1.0 List-Id: XFS Filesystem from SGI List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: xfs-bounces@oss.sgi.com Sender: xfs-bounces@oss.sgi.com To: david@fromorbit.com, darrick.wong@oracle.com Cc: xfs@oss.sgi.com Add the reflink feature flag to the set of recognized feature flags. This enables users to write to reflink filesystems. Signed-off-by: Darrick J. Wong --- fs/xfs/libxfs/xfs_format.h | 3 ++- fs/xfs/libxfs/xfs_sb.c | 5 +++++ fs/xfs/xfs_super.c | 3 +++ 3 files changed, 10 insertions(+), 1 deletion(-) diff --git a/fs/xfs/libxfs/xfs_format.h b/fs/xfs/libxfs/xfs_format.h index 7482531..ab0341f 100644 --- a/fs/xfs/libxfs/xfs_format.h +++ b/fs/xfs/libxfs/xfs_format.h @@ -459,7 +459,8 @@ xfs_sb_has_compat_feature( #define XFS_SB_FEAT_RO_COMPAT_REFLINK (1 << 2) /* reflinked files */ #define XFS_SB_FEAT_RO_COMPAT_ALL \ (XFS_SB_FEAT_RO_COMPAT_FINOBT | \ - XFS_SB_FEAT_RO_COMPAT_RMAPBT) + XFS_SB_FEAT_RO_COMPAT_RMAPBT | \ + XFS_SB_FEAT_RO_COMPAT_REFLINK) #define XFS_SB_FEAT_RO_COMPAT_UNKNOWN ~XFS_SB_FEAT_RO_COMPAT_ALL static inline bool xfs_sb_has_ro_compat_feature( diff --git a/fs/xfs/libxfs/xfs_sb.c b/fs/xfs/libxfs/xfs_sb.c index c195ea7..a99eb01 100644 --- a/fs/xfs/libxfs/xfs_sb.c +++ b/fs/xfs/libxfs/xfs_sb.c @@ -230,6 +230,11 @@ xfs_mount_validate_sb( "EXPERIMENTAL reverse mapping btree feature enabled. Use at your own risk!"); } + if (xfs_sb_version_hasreflink(sbp)) { + xfs_alert(mp, +"EXPERIMENTAL reflink feature enabled. Use at your own risk!"); + } + /* * More sanity checking. Most of these were stolen directly from * xfs_repair. diff --git a/fs/xfs/xfs_super.c b/fs/xfs/xfs_super.c index 36df40b..ede714b 100644 --- a/fs/xfs/xfs_super.c +++ b/fs/xfs/xfs_super.c @@ -1536,6 +1536,9 @@ xfs_fs_fill_super( "Block device does not support DAX Turning DAX off."); mp->m_flags &= ~XFS_MOUNT_DAX; } + if (xfs_sb_version_hasreflink(&mp->m_sb)) + xfs_alert(mp, + "DAX and reflink have not been tested together!"); } if (xfs_sb_version_hassparseinodes(&mp->m_sb)) _______________________________________________ xfs mailing list xfs@oss.sgi.com http://oss.sgi.com/mailman/listinfo/xfs