From: Darrick J. Wong <darrick.wong@xxxxxxxxxx>
Introduce a new rocompat flag "FIXED_AGFL" to indicate that we've
scanned and verified that the AGFL does not hit the troublesome last
element of the AGFL array, and update xfs_agfl_size to its new
definition based on this feature.
Signed-off-by: Darrick J. Wong <darrick.wong@xxxxxxxxxx>
---
fs/xfs/libxfs/xfs_format.h | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/fs/xfs/libxfs/xfs_format.h b/fs/xfs/libxfs/xfs_format.h
index bb42a11..3befc92f 100644
--- a/fs/xfs/libxfs/xfs_format.h
+++ b/fs/xfs/libxfs/xfs_format.h
@@ -464,6 +464,7 @@ 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_FIXED_AGFL (1 << 3) /* fixed agfl */
#define XFS_SB_FEAT_RO_COMPAT_ALL \
(XFS_SB_FEAT_RO_COMPAT_FINOBT | \
XFS_SB_FEAT_RO_COMPAT_RMAPBT | \
@@ -566,6 +567,12 @@ static inline bool xfs_sb_version_hasreflink(struct xfs_sb *sbp)
(sbp->sb_features_ro_compat & XFS_SB_FEAT_RO_COMPAT_REFLINK);
}
+static inline bool xfs_sb_version_hasfixedagfl(struct xfs_sb *sbp)
+{
+ return XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_5 &&
+ (sbp->sb_features_ro_compat & XFS_SB_FEAT_RO_COMPAT_FIXED_AGFL);
+}
+
/*
* end of superblock version macros
*/
--
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