[PATCH 18/18] xfs: enable sparse inode chunks for v5 superblocks

[Brian Foster]

Enable the use and processing of sparse inode chunks.  Fix the
xfs_sb_version_hassparseinodes() helper to allow the allocation of
sparse chunks on v5 format superblocks. Add the incompat. feature bit to
the *_ALL mask such that fs' with sparse chunks can be mounted.

Signed-off-by: Brian Foster <bfoster at redhat.com>
---
 fs/xfs/libxfs/xfs_sb.h | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/fs/xfs/libxfs/xfs_sb.h b/fs/xfs/libxfs/xfs_sb.h
index 6f48de9..f2299b7 100644
--- a/fs/xfs/libxfs/xfs_sb.h
+++ b/fs/xfs/libxfs/xfs_sb.h
@@ -511,7 +511,8 @@ xfs_sb_has_ro_compat_feature(
 #define XFS_SB_FEAT_INCOMPAT_FTYPE	(1 << 0)	/* filetype in dirent */
 #define XFS_SB_FEAT_INCOMPAT_SPINODES	(1 << 1)	/* sparse inode chunks */
 #define XFS_SB_FEAT_INCOMPAT_ALL \
-		(XFS_SB_FEAT_INCOMPAT_FTYPE)
+		(XFS_SB_FEAT_INCOMPAT_FTYPE|	\
+		 XFS_SB_FEAT_INCOMPAT_SPINODES)
 
 #define XFS_SB_FEAT_INCOMPAT_UNKNOWN	~XFS_SB_FEAT_INCOMPAT_ALL
 static inline bool
@@ -561,7 +562,7 @@ static inline int xfs_sb_version_hasfinobt(xfs_sb_t *sbp)
 
 static inline int xfs_sb_version_hassparseinodes(struct xfs_sb *sbp)
 {
-	return 0; /* not yet enabled */
+	return XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_5;
 }
 
 /*
-- 
1.8.3.1