Add the parent pointer support to the superblock version 5.
---
fs/xfs/xfs_sb.h | 11 ++++++++++-
1 file changed, 10 insertions(+), 1 deletion(-)
Index: b/fs/xfs/xfs_sb.h
===================================================================
--- a/fs/xfs/xfs_sb.h
+++ b/fs/xfs/xfs_sb.h
@@ -89,6 +89,7 @@ struct xfs_trans;
#define XFS_SB_VERSION2_OKREALFBITS \
(XFS_SB_VERSION2_LAZYSBCOUNTBIT | \
XFS_SB_VERSION2_ATTR2BIT | \
+ XFS_SB_VERSION2_PARENTBIT | \
XFS_SB_VERSION2_PROJID32BIT | \
XFS_SB_VERSION2_FTYPE)
#define XFS_SB_VERSION2_OKSASHFBITS \
@@ -596,8 +597,10 @@ xfs_sb_has_ro_compat_feature(
}
#define XFS_SB_FEAT_INCOMPAT_FTYPE (1 << 0) /* filetype in dirent */
+#define XFS_SB_FEAT_INCOMPAT_PARENT (2 << 0) /* parent inode ptr */
#define XFS_SB_FEAT_INCOMPAT_ALL \
- (XFS_SB_FEAT_INCOMPAT_FTYPE)
+ (XFS_SB_FEAT_INCOMPAT_FTYPE | \
+ XFS_SB_FEAT_INCOMPAT_PARENT)
#define XFS_SB_FEAT_INCOMPAT_UNKNOWN ~XFS_SB_FEAT_INCOMPAT_ALL
static inline bool
@@ -639,6 +642,12 @@ static inline int xfs_sb_version_hasftyp
(sbp->sb_features2 & XFS_SB_VERSION2_FTYPE));
}
+static inline int xfs_sb_version_hasparent(struct xfs_sb *sbp)
+{
+ return (XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_5 &&
+ xfs_sb_has_incompat_feature(sbp, XFS_SB_FEAT_INCOMPAT_PARENT));
+}
+
/*
* end of superblock version macros
*/
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