Cache: don't create a new etag when the mtime hasn't changed

diff --git a/lib/files/cache/scanner.php b/lib/files/cache/scanner.php
index ec2162644299e76c758e7891aa6781b7f24334bb..7f19261d972761d870d8b18b2783b735892adc4d 100644 (file)
--- a/lib/files/cache/scanner.php
+++ b/lib/files/cache/scanner.php
@@ -76,6 +76,9 @@ class Scanner {
                        }
                        if ($checkExisting and $data['size'] === -1 and $cacheData = $this->cache->get($file)) {
                                $data['size'] = $cacheData['size'];
+                               if ($data['mtime'] === $cacheData['mtime']) {
+                                       $data['etag'] = $cacheData['etag'];
+                               }
                        }
                        $this->cache->put($file, $data);
                }