ext4: sync up block group descriptor with e2fsprogs.

This patch extends bg_itable_unused of ext4 group descriptor
from 16bit into 32bit. In order to add bg_itable_unused_hi into
struct ext4_group_desc, some extra fields which are already introduced into
e2fsprogs are also added in for consistency.

Signed-off-by: Coly Li <coyli@suse.de>
Cc: Andreas Dilger <adilger@clusterfs.com>
Signed-off-by: Mingming Cao <cmm@us.ibm.com>

1 files changed, 5 insertions, 0 deletions

diff --git a/include/linux/ext4_fs.h b/include/linux/ext4_fs.h
index 6ae91f40aaa2..55a376e7bca0 100644
--- a/include/linux/ext4_fs.h
+++ b/include/linux/ext4_fs.h
@@ -118,6 +118,11 @@ struct ext4_group_desc
         __le32  bg_block_bitmap_hi;     /* Blocks bitmap block MSB */
         __le32  bg_inode_bitmap_hi;     /* Inodes bitmap block MSB */
         __le32  bg_inode_table_hi;      /* Inodes table block MSB */
+        __le16  bg_free_blocks_count_hi;/* Free blocks count MSB */
+        __le16  bg_free_inodes_count_hi;/* Free inodes count MSB */
+        __le16  bg_used_dirs_count_hi;  /* Directories count MSB */
+        __le16  bg_itable_unused_hi;    /* Unused inodes count MSB */
+        __u32   bg_reserved2[3];
 };
 
 #define EXT4_BG_INODE_UNINIT    0x0001 /* Inode table/bitmap not in use */