ext4: do not enable delalloc by default for ext2

Signed-off-by: NBrian Foster <bfoster@redhat.com>
Signed-off-by: N"Theodore Ts'o" <tytso@mit.edu>

fs/ext4/super.c

@@ -3411,7 +3411,7 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent)
 	 * enable delayed allocation by default
 	 * Use -o nodelalloc to turn it off
 	 */
-	if (!IS_EXT3_SB(sb) &&
+	if (!IS_EXT3_SB(sb) && !IS_EXT2_SB(sb) &&
 	    ((def_mount_opts & EXT4_DEFM_NODELALLOC) == 0))
 		set_opt(sb, DELALLOC);