1 files changed, 14 insertions, 1 deletions

diff --git a/include/linux/nilfs2_fs.h b/include/linux/nilfs2_fs.h
index cc3465e5be38..7dd4cd494490 100644
--- a/include/linux/nilfs2_fs.h
+++ b/include/linux/nilfs2_fs.h
@@ -212,7 +212,10 @@ struct nilfs_super_block {
 /*F8*/  __le32  s_c_interval;           /* Commit interval of segment */
         __le32  s_c_block_max;          /* Threshold of data amount for
                                            the segment construction */
-        __u32   s_reserved[192];        /* padding to the end of the block */
+/*100*/ __le64  s_feature_compat;       /* Compatible feature set */
+        __le64  s_feature_compat_ro;    /* Read-only compatible feature set */
+        __le64  s_feature_incompat;     /* Incompatible feature set */
+        __u32   s_reserved[186];        /* padding to the end of the block */
 };
 
 /*
@@ -228,6 +231,16 @@ struct nilfs_super_block {
 #define NILFS_MINOR_REV         0       /* minor revision */
 
 /*
+ * Feature set definitions
+ *
+ * If there is a bit set in the incompatible feature set that the kernel
+ * doesn't know about, it should refuse to mount the filesystem.
+ */
+#define NILFS_FEATURE_COMPAT_SUPP       0ULL
+#define NILFS_FEATURE_COMPAT_RO_SUPP    0ULL
+#define NILFS_FEATURE_INCOMPAT_SUPP     0ULL
+
+/*
  * Bytes count of super_block for CRC-calculation
  */
 #define NILFS_SB_BYTES  \