Now calling parent method when path is not root

lib/private/files/cache/homecache.php

@@ -16,31 +16,23 @@ class HomeCache extends Cache {
 	 * @return int
 	 */
 	public function calculateFolderSize($path) {
+		if ($path !== '/' and $path !== '') {
+			return parent::calculateFolderSize($path);
+		}
+
 		$totalSize = 0;
 		$entry = $this->get($path);
 		if ($entry && $entry['mimetype'] === 'httpd/unix-directory') {
-			$isRoot = ($path === '/' or $path === '');
 			$id = $entry['fileid'];
-			$sql = 'SELECT SUM(`size`), MIN(`size`) FROM `*PREFIX*filecache` ' .
-				'WHERE `parent` = ? AND `storage` = ?';
-			if ($isRoot) {
-				// filter out non-scanned dirs at the root
-				$sql .= ' AND `size` >= 0';
-			}
+			$sql = 'SELECT SUM(`size`) FROM `*PREFIX*filecache` ' .
+				'WHERE `parent` = ? AND `storage` = ? AND `size` >= 0';
 			$result = \OC_DB::executeAudited($sql, array($id, $this->getNumericStorageId()));
 			if ($row = $result->fetchRow()) {
-				list($sum, $min) = array_values($row);
-				$sum = (int)$sum;
-				$min = (int)$min;
-				if ($min === -1) {
-					$totalSize = $min;
-				} else {
-					$totalSize = $sum;
-				}
+				list($sum) = array_values($row);
+				$totalSize = (int)$sum;
 				if ($entry['size'] !== $totalSize) {
 					$this->update($id, array('size' => $totalSize));
 				}
-
 			}
 		}
 		return $totalSize;