ext4: move DIOREAD_NOLOCK setting to ext4_set_def_opts()

Now since all preparations is done, we can move the DIOREAD_NOLOCK
setting to ext4_set_def_opts().
Suggested-by: Ritesh Harjani (IBM) <ritesh.list@gmail.com>
Signed-off-by: Jason Yan <yanaijie@huawei.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Link: https://lore.kernel.org/r/20220916141527.1012715-17-yanaijie@huawei.comSigned-off-by: Theodore Ts'o <tytso@mit.edu>

fs/ext4/super.c

@@ -4335,6 +4335,9 @@ static void ext4_set_def_opts(struct super_block *sb,
 	if (!IS_EXT3_SB(sb) && !IS_EXT2_SB(sb) &&
 	    ((def_mount_opts & EXT4_DEFM_NODELALLOC) == 0))
 		set_opt(sb, DELALLOC);
+
+	if (sb->s_blocksize == PAGE_SIZE)
+		set_opt(sb, DIOREAD_NOLOCK);
 }
 
 static int ext4_handle_clustersize(struct super_block *sb)
@@ -5080,9 +5083,6 @@ static int __ext4_fill_super(struct fs_context *fc, struct super_block *sb)
 	 */
 	sbi->s_li_wait_mult = EXT4_DEF_LI_WAIT_MULT;
 
-	if (sb->s_blocksize == PAGE_SIZE)
-		set_opt(sb, DIOREAD_NOLOCK);
-
 	if (ext4_inode_info_init(sb, es))
 		goto failed_mount;