[dchinner: forward ported and cleaned up]
[achender: rebased and added parent pointer attribute to
compatible attributes mask]
Signed-off-by: Mark Tinguely <tinguely@xxxxxxx>
Signed-off-by: Dave Chinner <dchinner@xxxxxxxxxx>
Signed-off-by: Allison Henderson <allison.henderson@xxxxxxxxxx>
Reviewed-by: Darrick J. Wong <darrick.wong@xxxxxxxxxx>
---
fs/xfs/libxfs/xfs_format.h | 14 +++++++++-----
fs/xfs/libxfs/xfs_fs.h | 1 +
fs/xfs/libxfs/xfs_sb.c | 2 ++
fs/xfs/xfs_super.c | 4 ++++
4 files changed, 16 insertions(+), 5 deletions(-)
diff --git a/fs/xfs/libxfs/xfs_format.h b/fs/xfs/libxfs/xfs_format.h
index 96976497306c..e85d6b643622 100644
--- a/fs/xfs/libxfs/xfs_format.h
+++ b/fs/xfs/libxfs/xfs_format.h
@@ -83,6 +83,7 @@ struct xfs_ifork;
#define XFS_SB_VERSION2_OKBITS \
(XFS_SB_VERSION2_LAZYSBCOUNTBIT | \
XFS_SB_VERSION2_ATTR2BIT | \
+ XFS_SB_VERSION2_PARENTBIT | \
XFS_SB_VERSION2_PROJID32BIT | \
XFS_SB_VERSION2_FTYPE)
@@ -353,11 +354,13 @@ xfs_sb_has_compat_feature(
#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_INOBTCNT (1 << 3) /* inobt block counts */
+#define XFS_SB_FEAT_RO_COMPAT_PARENT (1 << 4) /* 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_INOBTCNT)
+ (XFS_SB_FEAT_RO_COMPAT_FINOBT | \
+ XFS_SB_FEAT_RO_COMPAT_RMAPBT | \
+ XFS_SB_FEAT_RO_COMPAT_REFLINK | \
+ XFS_SB_FEAT_RO_COMPAT_INOBTCNT| \
+ 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(
@@ -392,7 +395,8 @@ xfs_sb_has_incompat_feature(
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));
}
#define XFS_SB_FEAT_INCOMPAT_LOG_XATTRS (1 << 0) /* Delayed Attributes */
diff --git a/fs/xfs/libxfs/xfs_fs.h b/fs/xfs/libxfs/xfs_fs.h
index 1cfd5bc6520a..b0b4d7a3aa15 100644
--- a/fs/xfs/libxfs/xfs_fs.h
+++ b/fs/xfs/libxfs/xfs_fs.h
@@ -237,6 +237,7 @@ typedef struct xfs_fsop_resblks {
#define XFS_FSOP_GEOM_FLAGS_BIGTIME (1 << 21) /* 64-bit nsec timestamps */
#define XFS_FSOP_GEOM_FLAGS_INOBTCNT (1 << 22) /* inobt btree counter */
#define XFS_FSOP_GEOM_FLAGS_NREXT64 (1 << 23) /* large extent counters */
+#define XFS_FSOP_GEOM_FLAGS_PARENT (1 << 24) /* 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 a20cade590e9..d90b05456dba 100644
--- a/fs/xfs/libxfs/xfs_sb.c
+++ b/fs/xfs/libxfs/xfs_sb.c
@@ -1187,6 +1187,8 @@ xfs_fs_geometry(
geo->flags |= XFS_FSOP_GEOM_FLAGS_BIGTIME;
if (xfs_has_inobtcounts(mp))
geo->flags |= XFS_FSOP_GEOM_FLAGS_INOBTCNT;
+ if(xfs_sb_version_hasparent(sbp))
+ geo->flags |= XFS_FSOP_GEOM_FLAGS_PARENT;
if (xfs_has_sector(mp)) {
geo->flags |= XFS_FSOP_GEOM_FLAGS_SECTOR;
geo->logsectsize = sbp->sb_logsectsize;
diff --git a/fs/xfs/xfs_super.c b/fs/xfs/xfs_super.c
index a6e7b4176faf..cbb492fea4a5 100644
--- a/fs/xfs/xfs_super.c
+++ b/fs/xfs/xfs_super.c
@@ -1655,6 +1655,10 @@ xfs_fs_fill_super(
xfs_warn(mp,
"EXPERIMENTAL Large extent counts feature in use. Use at your own risk!");
+ 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;
--
2.25.1
