When we use iounmap() to free the mapping, it calls unmap_vmap_area() to clear page table, but do not free the memory of page table, right?
So when use ioremap() to mapping another area(incluce the area before), it may use large mapping(e.g. ioremap_pmd_enabled()), so the original page table memory(e.g. pte memory) will be lost, it cause memory leak, right? Thanks, Xishi Qiu
