make remount work

stepmania/src/RageFileDriverDirect.cpp

@@ -176,6 +176,7 @@ bool RageFileDriverDirect::Remount( const CString &sPath )
 	root = sPath;
 	if( root.Right(1) != "/" )
 		root += '/';
+	((DirectFilenameDB *) FDB)->SetRoot( sPath );
 
 	/* If the root path doesn't exist, create it. */
 	CreateDirectories( root );

stepmania/src/RageFileDriverDirectHelpers.cpp

@@ -226,6 +226,12 @@ bool CreateDirectories( CString Path )
 DirectFilenameDB::DirectFilenameDB( CString root_ )
 {
 	ExpireSeconds = 30;
+	SetRoot( root_ );
+}
+
+
+void DirectFilenameDB::SetRoot( CString root_ )
+{
 	root = root_;
 	if( root.Right(1) != "/" )
 		root += '/';

stepmania/src/RageFileDriverDirectHelpers.h

@@ -35,12 +35,13 @@ bool PathReady( CString path );
 #include "RageUtil_FileDB.h"
 class DirectFilenameDB: public FilenameDB
 {
+public:
+	DirectFilenameDB( CString root );
+	void SetRoot( CString root );
+
 protected:
 	virtual void PopulateFileSet( FileSet &fs, const CString &sPath );
 	CString root;
-
-public:
-	DirectFilenameDB( CString root_ );
 };
 
 #endif

stepmania/src/RageFileManager.cpp

@@ -503,13 +503,15 @@ void RageFileManager::Remount( CString sMountpoint, CString sPath )
 	RageFileDriver *pDriver = FILEMAN->GetFileDriver( sMountpoint );
 	if( pDriver == NULL )
 	{
-		LOG->Warn( "Remount(%s,%s): mountpoint not found",
-			sMountpoint.c_str(), sPath.c_str() );
+		if( LOG )
+			LOG->Warn( "Remount(%s,%s): mountpoint not found", sMountpoint.c_str(), sPath.c_str() );
 		return;
 	}
 
 	if( !pDriver->Remount(sPath) )
 		LOG->Warn( "Remount(%s,%s): remount failed (does the driver support remounting?)" );
+	else
+		pDriver->FlushDirCache( "" );
 
 	FILEMAN->ReleaseFileDriver( pDriver );
 }