Only update metadata that has changed

diff --git a/lib/files/cache/scanner.php b/lib/files/cache/scanner.php
index 46122221dc20376d85284ae61d98627670d5382c..cd022d2513276e9642d9b38931cf92401ca8ec6a 100644 (file)
--- a/lib/files/cache/scanner.php
+++ b/lib/files/cache/scanner.php
@@ -78,7 +78,7 @@ class Scanner {
                                                $this->scanFile($parent);
                                        }
                                }
-                               if($cacheData = $this->cache->get($file)) {
+                               if ($cacheData = $this->cache->get($file)) {
                                        if ($data['mtime'] === $cacheData['mtime'] &&
                                                $data['size'] === $cacheData['size']) {
                                                $data['etag'] = $cacheData['etag'];
@@ -89,7 +89,14 @@ class Scanner {
                                                $data['size'] = $cacheData['size'];
                                        }
                                }
-                               $this->cache->put($file, $data);
+                               $newData = $data;
+                               if ($cacheData) {
+                                       // Only update metadata that has changed
+                                       $newData = array_diff($data, $cacheData);
+                               }
+                               if (!empty($newData)) {
+                                       $this->cache->put($file, $newData);
+                               }
                        }
                        return $data;
                }