From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from userp2120.oracle.com ([156.151.31.85]:43986 "EHLO userp2120.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751884AbeEFR1N (ORCPT ); Sun, 6 May 2018 13:27:13 -0400 Received: from pps.filterd (userp2120.oracle.com [127.0.0.1]) by userp2120.oracle.com (8.16.0.22/8.16.0.22) with SMTP id w46HRCte165295 for ; Sun, 6 May 2018 17:27:12 GMT Received: from userv0022.oracle.com (userv0022.oracle.com [156.151.31.74]) by userp2120.oracle.com with ESMTP id 2hs5931xnc-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK) for ; Sun, 06 May 2018 17:27:12 +0000 Received: from aserv0121.oracle.com (aserv0121.oracle.com [141.146.126.235]) by userv0022.oracle.com (8.14.4/8.14.4) with ESMTP id w46HRB3C010989 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK) for ; Sun, 6 May 2018 17:27:12 GMT Received: from abhmp0014.oracle.com (abhmp0014.oracle.com [141.146.116.20]) by aserv0121.oracle.com (8.14.4/8.13.8) with ESMTP id w46HRBFj005993 for ; Sun, 6 May 2018 17:27:11 GMT From: Allison Henderson Subject: [PATCH 19/21] xfs: Add the parent pointer support to the superblock version 5. Date: Sun, 6 May 2018 10:24:52 -0700 Message-Id: <1525627494-12873-20-git-send-email-allison.henderson@oracle.com> In-Reply-To: <1525627494-12873-1-git-send-email-allison.henderson@oracle.com> References: <1525627494-12873-1-git-send-email-allison.henderson@oracle.com> Sender: linux-xfs-owner@vger.kernel.org List-ID: List-Id: xfs To: linux-xfs@vger.kernel.org [dchinner: forward ported and cleaned up] [achender: rebased and added parent pointer attribute to compatible attributes mask] Signed-off-by: Mark Tinguely Signed-off-by: Dave Chinner Signed-off-by: Allison Henderson --- fs/xfs/libxfs/xfs_format.h | 7 +++++-- fs/xfs/libxfs/xfs_fs.h | 1 + fs/xfs/libxfs/xfs_sb.c | 2 ++ fs/xfs/xfs_super.c | 4 ++++ 4 files changed, 12 insertions(+), 2 deletions(-) diff --git a/fs/xfs/libxfs/xfs_format.h b/fs/xfs/libxfs/xfs_format.h index 5e946c8..d05ffc5 100644 --- a/fs/xfs/libxfs/xfs_format.h +++ b/fs/xfs/libxfs/xfs_format.h @@ -462,10 +462,12 @@ xfs_sb_has_compat_feature( #define XFS_SB_FEAT_RO_COMPAT_FINOBT (1 << 0) /* free inode btree */ #define XFS_SB_FEAT_RO_COMPAT_RMAPBT (1 << 1) /* reverse map btree */ #define XFS_SB_FEAT_RO_COMPAT_REFLINK (1 << 2) /* reflinked files */ +#define XFS_SB_FEAT_RO_COMPAT_PARENT (1 << 3) /* parent inode ptr */ #define XFS_SB_FEAT_RO_COMPAT_ALL \ (XFS_SB_FEAT_RO_COMPAT_FINOBT | \ XFS_SB_FEAT_RO_COMPAT_RMAPBT | \ - XFS_SB_FEAT_RO_COMPAT_REFLINK) + XFS_SB_FEAT_RO_COMPAT_REFLINK| \ + XFS_SB_FEAT_RO_COMPAT_PARENT) #define XFS_SB_FEAT_RO_COMPAT_UNKNOWN ~XFS_SB_FEAT_RO_COMPAT_ALL static inline bool xfs_sb_has_ro_compat_feature( @@ -561,7 +563,8 @@ static inline bool xfs_sb_version_hasreflink(struct xfs_sb *sbp) static inline bool xfs_sb_version_hasparent(struct xfs_sb *sbp) { - return false; /* We'll enable this at the end of the set */ + return (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_5 && + (sbp->sb_features_ro_compat & XFS_SB_FEAT_RO_COMPAT_PARENT)); } /* diff --git a/fs/xfs/libxfs/xfs_fs.h b/fs/xfs/libxfs/xfs_fs.h index faf1a4e..641e0af 100644 --- a/fs/xfs/libxfs/xfs_fs.h +++ b/fs/xfs/libxfs/xfs_fs.h @@ -222,6 +222,7 @@ typedef struct xfs_fsop_resblks { #define XFS_FSOP_GEOM_FLAGS_SPINODES 0x40000 /* sparse inode chunks */ #define XFS_FSOP_GEOM_FLAGS_RMAPBT 0x80000 /* reverse mapping btree */ #define XFS_FSOP_GEOM_FLAGS_REFLINK 0x100000 /* files can share blocks */ +#define XFS_FSOP_GEOM_FLAGS_PARENT 0x200000 /* parent pointers */ /* * Minimum and maximum sizes need for growth checks. diff --git a/fs/xfs/libxfs/xfs_sb.c b/fs/xfs/libxfs/xfs_sb.c index d9b94bd..e1f0ac1 100644 --- a/fs/xfs/libxfs/xfs_sb.c +++ b/fs/xfs/libxfs/xfs_sb.c @@ -955,6 +955,8 @@ xfs_fs_geometry( geo->flags |= XFS_FSOP_GEOM_FLAGS_RMAPBT; if (xfs_sb_version_hasreflink(sbp)) geo->flags |= XFS_FSOP_GEOM_FLAGS_REFLINK; + if(xfs_sb_version_hasparent(sbp)) + geo->flags |= XFS_FSOP_GEOM_FLAGS_PARENT; if (xfs_sb_version_hassector(sbp)) geo->logsectsize = sbp->sb_logsectsize; else diff --git a/fs/xfs/xfs_super.c b/fs/xfs/xfs_super.c index dce3baf..366deee 100644 --- a/fs/xfs/xfs_super.c +++ b/fs/xfs/xfs_super.c @@ -1731,6 +1731,10 @@ xfs_fs_fill_super( goto out_filestream_unmount; } + if (xfs_sb_version_hasparent(&mp->m_sb)) + xfs_alert(mp, + "EXPERIMENTAL parent pointer feature enabled. Use at your own risk!"); + error = xfs_mountfs(mp); if (error) goto out_filestream_unmount; -- 2.7.4