ext4_sync_group_desciptor_with_e2fsprogs.patch

   1 ext4: sync up block group descriptor with e2fsprogs.
   2
   3 From: Coly Li <coyli@suse.de>
   4
   5 This patch extends bg_itable_unused of ext4 group descriptor
   6 from 16bit into 32bit. In order to add bg_itable_unused_hi into
   7 struct ext4_group_desc, some extra fields which are already introduced into
   8 e2fsprogs are also added in for consistency.
   9
  10 Signed-off-by: Coly Li <coyli@suse.de>
  11 Cc: Andreas Dilger <adilger@clusterfs.com>
  12 Signed-off-by: Mingming Cao <cmm@us.ibm.com>
  13 ---
  14
  15  include/linux/ext4_fs.h |    5 +++++
  16  1 files changed, 5 insertions(+), 0 deletions(-)
  17
  18
  19 diff --git a/include/linux/ext4_fs.h b/include/linux/ext4_fs.h
  20 index 6ae91f4..55a376e 100644
  21 --- a/include/linux/ext4_fs.h
  22 +++ b/include/linux/ext4_fs.h
  23 @@ -118,6 +118,11 @@ struct ext4_group_desc
  24         __le32  bg_block_bitmap_hi;     /* Blocks bitmap block MSB */
  25         __le32  bg_inode_bitmap_hi;     /* Inodes bitmap block MSB */
  26         __le32  bg_inode_table_hi;      /* Inodes table block MSB */
  27 +       __le16  bg_free_blocks_count_hi;/* Free blocks count MSB */
  28 +       __le16  bg_free_inodes_count_hi;/* Free inodes count MSB */
  29 +       __le16  bg_used_dirs_count_hi;  /* Directories count MSB */
  30 +       __le16  bg_itable_unused_hi;    /* Unused inodes count MSB */
  31 +       __u32   bg_reserved2[3];
  32  };
  33
  34  #define EXT4_BG_INODE_UNINIT   0x0001 /* Inode table/bitmap not in use */