SR-ext4-resize-mark-new-group-EXT_BG_INODE_ZEROED.patch

   1 ext4: When resizing set the EXT4_BG_INODE_ZEROED flag for new block groups
   2
   3 From: Solofo.Ramangalahy@bull.net
   4
   5 The inode table has been zeroed in setup_new_group_blocks().  Mark it as
   6 such in ext4_group_add().  Since we are currently clearing inode table
   7 for the new block group, we should set the EXT4_BG_INODE_ZEROED flag.
   8 If at some point in the future we don't immediately zero out the inode
   9 table as part of the resize operation, then obviously we shouldn't do
  10 this.
  11
  12 Signed-off-by: Solofo.Ramangalahy@bull.net
  13 Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
  14 ---
  15 diff --git a/fs/ext4/resize.c b/fs/ext4/resize.c
  16 index b6ec184..d448eb1 100644
  17 --- a/fs/ext4/resize.c
  18 +++ b/fs/ext4/resize.c
  19 @@ -864,6 +864,7 @@ int ext4_group_add(struct super_block *sb, struct ext4_new_group_data *input)
  20         ext4_inode_table_set(sb, gdp, input->inode_table); /* LV FIXME */
  21         gdp->bg_free_blocks_count = cpu_to_le16(input->free_blocks_count);
  22         gdp->bg_free_inodes_count = cpu_to_le16(EXT4_INODES_PER_GROUP(sb));
  23 +       gdp->bg_flags |= cpu_to_le16(EXT4_BG_INODE_ZEROED);
  24         gdp->bg_checksum = ext4_group_desc_csum(sbi, input->group, gdp);
  25
  26         /*