ocfs2: fix a typing error in ocfs2_direct_IO_write

Only when direct IO succeeds we need consider zeroing out in case of
cluster not aligned.

Signed-off-by: Joseph Qi <joseph.qi@huawei.com>
Cc: Mark Fasheh <mfasheh@suse.com>
Cc: Joel Becker <jlbec@evilplan.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

fs/ocfs2/aops.c

@@ -771,7 +771,7 @@ static ssize_t ocfs2_direct_IO_write(struct kiocb *iocb,
 			if (ret < 0)
 				mlog_errno(ret);
 		}
-	} else if (written < 0 && append_write && !is_overwrite &&
+	} else if (written > 0 && append_write && !is_overwrite &&
 			!cluster_align) {
 		u32 p_cpos = 0;
 		u32 v_cpos = ocfs2_bytes_to_clusters(osb->sb, offset);