EXT4_HT_MAP_BLOCKS
handle = ext4_journal_start(inode, EXT4_HT_MAP_BLOCKS,
handle = ext4_journal_start(inode, EXT4_HT_MAP_BLOCKS, credits);
handle = ext4_journal_start(inode, EXT4_HT_MAP_BLOCKS,
handle = ext4_journal_start(inode, EXT4_HT_MAP_BLOCKS, dio_credits);