exfat: fix timing of synchronizing bitmap and inode

Commit(f55c096f exfat: do not zero the extended part) changed
the timing of synchronizing bitmap and inode in exfat_cont_expand().
The change caused xfstests generic/013 to fail if 'dirsync' or 'sync'
is enabled. So this commit restores the timing.

Fixes: f55c096f ("exfat: do not zero the extended part")
Signed-off-by: Yuezhang Mo <Yuezhang.Mo@sony.com>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>

fs/exfat/file.c

@@ -51,7 +51,7 @@ static int exfat_cont_expand(struct inode *inode, loff_t size)
 	clu.flags = ei->flags;
 
 	ret = exfat_alloc_cluster(inode, new_num_clusters - num_clusters,
-			&clu, IS_DIRSYNC(inode));
+			&clu, inode_needs_sync(inode));
 	if (ret)
 		return ret;
 
@@ -77,12 +77,11 @@ static int exfat_cont_expand(struct inode *inode, loff_t size)
 	ei->i_size_aligned = round_up(size, sb->s_blocksize);
 	ei->i_size_ondisk = ei->i_size_aligned;
 	inode->i_blocks = round_up(size, sbi->cluster_size) >> 9;
+	mark_inode_dirty(inode);
 
-	if (IS_DIRSYNC(inode))
+	if (IS_SYNC(inode))
 		return write_inode_now(inode, 1);
 
-	mark_inode_dirty(inode);
-
 	return 0;
 
 free_clu: