[PATCH V9 19/19] xfs: Add XFS_SB_FEAT_INCOMPAT_NREXT64 to the list of supported flags

Chandan Babu R
2022-04-06T09:38:55Z

This commit enables XFS module to work with fs instances having 64-bit
per-inode extent counters by adding XFS_SB_FEAT_INCOMPAT_NREXT64 flag to the
list of supported incompat feature flags.

Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Chandan Babu R <chandan.babu@oracle.com>
---
fs/xfs/libxfs/xfs_format.h | 3 ++-
fs/xfs/xfs_super.c | 5 +++++
2 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/fs/xfs/libxfs/xfs_format.h b/fs/xfs/libxfs/xfs_format.h
index bb327ea43ca1..b3f4a33b986c 100644
--- a/fs/xfs/libxfs/xfs_format.h
+++ b/fs/xfs/libxfs/xfs_format.h
@@ -378,7 +378,8 @@ xfs_sb_has_ro_compat_feature(
XFS_SB_FEAT_INCOMPAT_SPINODES| \
XFS_SB_FEAT_INCOMPAT_META_UUID| \
XFS_SB_FEAT_INCOMPAT_BIGTIME| \
- XFS_SB_FEAT_INCOMPAT_NEEDSREPAIR)
+ XFS_SB_FEAT_INCOMPAT_NEEDSREPAIR| \
+ XFS_SB_FEAT_INCOMPAT_NREXT64)

#define XFS_SB_FEAT_INCOMPAT_UNKNOWN ~XFS_SB_FEAT_INCOMPAT_ALL
static inline bool
diff --git a/fs/xfs/xfs_super.c b/fs/xfs/xfs_super.c
index 54be9d64093e..14591492c384 100644
--- a/fs/xfs/xfs_super.c
+++ b/fs/xfs/xfs_super.c
@@ -1639,6 +1639,11 @@ xfs_fs_fill_super(
goto out_filestream_unmount;
}

+ if (xfs_has_large_extent_counts(mp)) {
+ xfs_warn(mp,
+ "EXPERIMENTAL Large extent counts feature in use. Use at your own risk!");
+ }
+
error = xfs_mountfs(mp);
if (error)
goto out_filestream_unmount;
--
2.30.2