[PATCH V4 08/20] xfsprogs: Introduce XFS_SB_FEAT_INCOMPAT_NREXT64 and associated per-fs feature bit

Chandan Babu R
2021-12-14T08:49:58Z

XFS_SB_FEAT_INCOMPAT_NREXT64 incompat feature bit will be set on filesystems
which support large per-inode extent counters. This commit defines the new
incompat feature bit and the corresponding per-fs feature bit (along with
inline functions to work on it).

Signed-off-by: Chandan Babu R <chandan.babu@oracle.com>
---
libxfs/xfs_format.h | 7 +++++++
1 file changed, 7 insertions(+)

diff --git a/libxfs/xfs_format.h b/libxfs/xfs_format.h
index 68f42fca..23ecbc7d 100644
--- a/libxfs/xfs_format.h
+++ b/libxfs/xfs_format.h
@@ -469,6 +469,7 @@ xfs_sb_has_ro_compat_feature(
#define XFS_SB_FEAT_INCOMPAT_META_UUID (1 << 2) /* metadata UUID */
#define XFS_SB_FEAT_INCOMPAT_BIGTIME (1 << 3) /* large timestamps */
#define XFS_SB_FEAT_INCOMPAT_NEEDSREPAIR (1 << 4) /* needs xfs_repair */
+#define XFS_SB_FEAT_INCOMPAT_NREXT64 (1 << 5) /* 64-bit data fork extent counter */
#define XFS_SB_FEAT_INCOMPAT_ALL \
(XFS_SB_FEAT_INCOMPAT_FTYPE| \
XFS_SB_FEAT_INCOMPAT_SPINODES| \
@@ -575,6 +576,12 @@ static inline bool xfs_sb_version_hasbigtime(struct xfs_sb *sbp)
(sbp->sb_features_incompat & XFS_SB_FEAT_INCOMPAT_BIGTIME);
}

+static inline bool xfs_sb_version_hasnrext64(struct xfs_sb *sbp)
+{
+ return XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_5 &&
+ (sbp->sb_features_incompat & XFS_SB_FEAT_INCOMPAT_NREXT64);
+}
+
/*
* Inode btree block counter. We record the number of inobt and finobt blocks
* in the AGI header so that we can skip the finobt walk at mount time when
--
2.30.2