Struct PageTableMapPlan 

pub struct PageTableMapPlan<T: TableMeta, A: FrameAllocator> { /* private fields */ }

Allocation-free description of where one absent leaf may be installed.

This is captured while the caller has a stable page-table view. It owns no frames and may cross a lock boundary so allocation can happen before the page-table mutation critical section, like Linux’s vmf->prealloc_pte.

Implementations

impl<T: TableMeta, A: FrameAllocator> PageTableMapPlan<T, A>

pub const fn vaddr(&self) -> VirtAddr

pub const fn page_size(&self) -> usize

pub fn prepare_path(self) -> PagingResult<Option<PageTablePathDeposit<T, A>>>

Prepares only the missing intermediate directories for this leaf.

Ok(None) means the complete directory path already exists. A returned deposit owns an unreachable, zeroed suffix; publishing it is one bounded parent-entry store and never installs the leaf itself.

pub fn prepare( self, paddr: PhysAddr, config: PteConfigOf<T>, ) -> PagingResult<PageTableMapDeposit<T, A>>

Allocates and initializes every missing table below the captured parent.

No live page-table entry is changed. Failure drops the unpublished partial suffix, so callers either receive a complete move-only deposit or retain the exact pre-prepare page table.

Trait Implementations

impl<T: TableMeta, A: FrameAllocator> Debug for PageTableMapPlan<T, A>

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.