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-rw-r--r--include/linux/nilfs2_fs.h6
1 files changed, 4 insertions, 2 deletions
diff --git a/include/linux/nilfs2_fs.h b/include/linux/nilfs2_fs.h
index 3a65e5aa2d76..ae33ac2db62d 100644
--- a/include/linux/nilfs2_fs.h
+++ b/include/linux/nilfs2_fs.h
@@ -216,8 +216,10 @@ struct nilfs_super_block {
* 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_RO_BLOCK_COUNT 0x00000001ULL
+
#define NILFS_FEATURE_COMPAT_SUPP 0ULL
-#define NILFS_FEATURE_COMPAT_RO_SUPP 0ULL
+#define NILFS_FEATURE_COMPAT_RO_SUPP NILFS_FEATURE_COMPAT_RO_BLOCK_COUNT
#define NILFS_FEATURE_INCOMPAT_SUPP 0ULL
/*
@@ -509,7 +511,7 @@ struct nilfs_checkpoint {
__le64 cp_create;
__le64 cp_nblk_inc;
__le64 cp_inodes_count;
- __le64 cp_blocks_count; /* Reserved (might be deleted) */
+ __le64 cp_blocks_count;
/* Do not change the byte offset of ifile inode.
To keep the compatibility of the disk format,