1 files changed, 9 insertions, 23 deletions

diff --git a/include/linux/nilfs2_fs.h b/include/linux/nilfs2_fs.h
index 227e49dd5720..8768c469e93e 100644
--- a/include/linux/nilfs2_fs.h
+++ b/include/linux/nilfs2_fs.h
@@ -40,26 +40,7 @@
 
 #include <linux/types.h>
 #include <linux/ioctl.h>
-
-/*
- * Inode flags stored in nilfs_inode and on-memory nilfs inode
- *
- * We define these flags based on ext2-fs because of the
- * compatibility reason; to avoid problems in chattr(1)
- */
-#define NILFS_SECRM_FL          0x00000001 /* Secure deletion */
-#define NILFS_UNRM_FL           0x00000002 /* Undelete */
-#define NILFS_SYNC_FL           0x00000008 /* Synchronous updates */
-#define NILFS_IMMUTABLE_FL      0x00000010 /* Immutable file */
-#define NILFS_APPEND_FL         0x00000020 /* writes to file may only append */
-#define NILFS_NODUMP_FL         0x00000040 /* do not dump file */
-#define NILFS_NOATIME_FL        0x00000080 /* do not update atime */
-/* Reserved for compression usage... */
-#define NILFS_NOTAIL_FL         0x00008000 /* file tail should not be merged */
-#define NILFS_DIRSYNC_FL        0x00010000 /* dirsync behaviour */
-
-#define NILFS_FL_USER_VISIBLE   0x0003DFFF /* User visible flags */
-#define NILFS_FL_USER_MODIFIABLE        0x000380FF /* User modifiable flags */
+#include <linux/magic.h>
 
 
 #define NILFS_INODE_BMAP_SIZE   7
@@ -236,8 +217,10 @@ 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
 
 /*
@@ -260,7 +243,6 @@ struct nilfs_super_block {
 #define NILFS_USER_INO          11      /* Fisrt user's file inode number */
 
 #define NILFS_SB_OFFSET_BYTES   1024    /* byte offset of nilfs superblock */
-#define NILFS_SUPER_MAGIC       0x3434  /* NILFS filesystem  magic number */
 
 #define NILFS_SEG_MIN_BLOCKS    16      /* Minimum number of blocks in
                                            a full segment */
@@ -346,17 +328,21 @@ static inline unsigned nilfs_rec_len_from_disk(__le16 dlen)
 {
         unsigned len = le16_to_cpu(dlen);
 
+#if !defined(__KERNEL__) || (PAGE_CACHE_SIZE >= 65536)
         if (len == NILFS_MAX_REC_LEN)
                 return 1 << 16;
+#endif
         return len;
 }
 
 static inline __le16 nilfs_rec_len_to_disk(unsigned len)
 {
+#if !defined(__KERNEL__) || (PAGE_CACHE_SIZE >= 65536)
         if (len == (1 << 16))
                 return cpu_to_le16(NILFS_MAX_REC_LEN);
         else if (len > (1 << 16))
                 BUG();
+#endif
         return cpu_to_le16(len);
 }
 
@@ -525,7 +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,