f2fs: do not set LOST_PINO for newly created dir

Since directories will be written back with checkpoint and fsync a
directory will always write CP, there is no need to set LOST_PINO
after creating a directory.
Signed-off-by: Sheng Yong <shengyong1@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

fs/f2fs/dir.c

@@ -415,7 +415,8 @@ struct page *init_inode_metadata(struct inode *inode, struct inode *dir,
 	 * We lost i_pino from now on.
 	 */
 	if (is_inode_flag_set(inode, FI_INC_LINK)) {
-		file_lost_pino(inode);
+		if (!S_ISDIR(inode->i_mode))
+			file_lost_pino(inode);
 		/*
 		 * If link the tmpfile to alias through linkat path,
 		 * we should remove this inode from orphan list.