xfs: Add XFS_SB_FEAT_INCOMPAT_NREXT64 to the list of supported flags

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>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Chandan Babu R <chandan.babu@oracle.com>

diff --git a/fs/xfs/libxfs/xfs_format.h b/fs/xfs/libxfs/xfs_format.h
index 3beaa819b790e32a601fc2089b6769b2285b3726..398fd98bf29ef387ed8361248ba264ebccb4adab 100644 (file)
--- 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 54be9d64093edacfaea509ff2d1e73cf61a58493..d35536a08f82a3f6fc515f8d6ce7c8b2c2a4aff6 100644 (file)
--- a/fs/xfs/xfs_super.c
+++ b/fs/xfs/xfs_super.c
@@ -1639,6 +1639,10 @@ 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;