8     mm::{MemoryManagementArch, PhysAddr, VirtAddr},
20     pub fn new(paddr: PhysAddr) -> Self {  in new()
27     pub fn phys_address(&self) -> PhysAddr {  in phys_address()  argument
28         return PhysAddr::new(self.number * MMArch::PAGE_SIZE);  in phys_address()
287     unsafe fn allocate(&mut self, count: PageFrameCount) -> Option<(PhysAddr, PageFrameCount)>;  in allocate()  argument
290     unsafe fn free(&mut self, address: PhysAddr, count: PageFrameCount);  in free()  argument
292     unsafe fn allocate_one(&mut self) -> Option<PhysAddr> {  in allocate_one()  argument
296     unsafe fn free_one(&mut self, address: PhysAddr) {  in free_one()  argument
305     unsafe fn allocate(&mut self, count: PageFrameCount) -> Option<(PhysAddr, PageFrameCount)> {  in allocate()  argument
308     unsafe fn free(&mut self, address: PhysAddr, count: PageFrameCount) {  in free()  argument
311     unsafe fn allocate_one(&mut self) -> Option<PhysAddr> {  in allocate_one()  argument
314     unsafe fn free_one(&mut self, address: PhysAddr) {  in free_one()  argument
325 pub unsafe fn allocate_page_frames(count: PageFrameCount) -> Option<(PhysAddr, PageFrameCount)> {  in allocate_page_frames()  argument