ocfs2: Add JBD2 compat feature bit.

Define the OCFS2_FEATURE_COMPAT_JBD2 bit in the filesystem header.

Signed-off-by: Joel Becker <joel.becker@oracle.com>
Signed-off-by: Mark Fasheh <mfasheh@suse.com>

1 files changed, 7 insertions, 1 deletions

diff --git a/fs/ocfs2/ocfs2_fs.h b/fs/ocfs2/ocfs2_fs.h
index 5f180cf7abbd..5e0c0d0aef7d 100644
--- a/fs/ocfs2/ocfs2_fs.h
+++ b/fs/ocfs2/ocfs2_fs.h
@@ -86,7 +86,8 @@
 #define OCFS2_CLEAR_INCOMPAT_FEATURE(sb,mask)                   \
         OCFS2_SB(sb)->s_feature_incompat &= ~(mask)
 
-#define OCFS2_FEATURE_COMPAT_SUPP       OCFS2_FEATURE_COMPAT_BACKUP_SB
+#define OCFS2_FEATURE_COMPAT_SUPP       (OCFS2_FEATURE_COMPAT_BACKUP_SB \
+                                         | OCFS2_FEATURE_COMPAT_JBD2_SB)
 #define OCFS2_FEATURE_INCOMPAT_SUPP     (OCFS2_FEATURE_INCOMPAT_LOCAL_MOUNT \
                                          | OCFS2_FEATURE_INCOMPAT_SPARSE_ALLOC \
                                          | OCFS2_FEATURE_INCOMPAT_INLINE_DATA \
@@ -153,6 +154,11 @@
 #define OCFS2_FEATURE_COMPAT_BACKUP_SB          0x0001
 
 /*
+ * The filesystem will correctly handle journal feature bits.
+ */
+#define OCFS2_FEATURE_COMPAT_JBD2_SB            0x0002
+
+/*
  * Unwritten extents support.
  */
 #define OCFS2_FEATURE_RO_COMPAT_UNWRITTEN       0x0001