Using a Page in external Flash for ONE Module

Hi, i have a module that i want to place in exactly ONE Page of my external Flash.

I located it fix to an Adress using the SECTIONS statement of the Linker. But now i want to reserve the rest of the Page i placed it to. I mean i could do it manualle, look how long the module is and reserve the rest of the Page using the RESERVE statement. is there a smarter way to do it?