Symbol: EXT4_EXT_MAY_ZEROOUT
fs/ext4/extents.c
3485
if (!(split_flag & EXT4_EXT_MAY_ZEROOUT))
fs/ext4/extents.c
3849
split_flag |= ee_block + ee_len <= eof_block ? EXT4_EXT_MAY_ZEROOUT : 0;