Merge "Clear the stat cache in addMissingMetadata() to avoid more POSTs"

diff --combined includes/filebackend/SwiftFileBackend.php
index e9df205,1aab033..3db235b
--- 1/includes/filebackend/SwiftFileBackend.php
--- 2/includes/filebackend/SwiftFileBackend.php
+++ b/includes/filebackend/SwiftFileBackend.php
@@@ -670,10 -670,10 +670,10 @@@ class SwiftFileBackend extends FileBack
                $ps = Profiler::instance()->scopedProfileIn( __METHOD__ . "-{$this->name}" );
                wfDebugLog( 'SwiftBackend', __METHOD__ . ": $path was not stored with SHA-1 metadata." );
  
 +              $objHdrs['x-object-meta-sha1base36'] = false;
 +
                $auth = $this->getAuthentication();
                if ( !$auth ) {
 -                      $objHdrs['x-object-meta-sha1base36'] = false;
 -
                        return $objHdrs; // failed
                }
  
@@@ -693,6 -693,8 +693,8 @@@
                                                'headers' => $this->authTokenHeaders( $auth ) + $objHdrs
                                        ) );
                                        if ( $rcode >= 200 && $rcode <= 299 ) {
+                                               $this->deleteFileCache( $path );
+ 
                                                return $objHdrs; // success
                                        }
                                }
@@@ -700,6 -702,7 +702,6 @@@
                }
  
                wfDebugLog( 'SwiftBackend', __METHOD__ . ": unable to set SHA-1 metadata for $path" );
 -              $objHdrs['x-object-meta-sha1base36'] = false;
  
                return $objHdrs; // failed
        }