- Patch #353458 by quicksketch, drewish, jpetso, sun, noahb, aaron, chx, mikey_p, dhthwy: hook_file_references() was not designed for a highly flexible field storage.

1 files changed, 8 insertions, 2 deletions

diff --git a/modules/system/system.module b/modules/system/system.module
index 85175c9f0..be167a888 100644
--- a/modules/system/system.module
+++ b/modules/system/system.module
@@ -2819,8 +2819,14 @@ function system_cron() {
   ));
   foreach ($result as $row) {
     if ($file = file_load($row->fid)) {
-      if (!file_delete($file)) {
-        watchdog('file system', 'Could not delete temporary file "%path" during garbage collection', array('%path' => $file->uri), WATCHDOG_ERROR);
+      $references = file_usage_list($file);
+      if (empty($references)) {
+        if (!file_delete($file)) {
+          watchdog('file system', 'Could not delete temporary file "%path" during garbage collection', array('%path' => $file->uri), WATCHDOG_ERROR);
+        }
+      }
+      else {
+        watchdog('file system', 'Did not delete temporary file "%path" during garbage collection, because it is in use by the following modules: %modules.', array('%path' => $file->uri, '%modules' => implode(', ', array_keys($references))), WATCHDOG_INFO);
       }
     }
   }