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Diffstat (limited to 'include/linux/nilfs2_fs.h')
-rw-r--r--include/linux/nilfs2_fs.h15
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 \