Struct ErofsPager 

pub struct ErofsPager { /* private fields */ }

A wrapper around Zircon’s zx::Pager.

Implementations

impl ErofsPager

pub fn new() -> Result<Self, Status>

Creates a new ErofsPager.

pub fn create_vmo( &self, file: Weak<ErofsFile>, initial_size: u64, ) -> Result<(Vmo, u64), Status>

Creates a pager-backed VMO and registers its packet receiver, returning the VMO and its receiver registration key.

pub fn watch_for_zero_children( &self, key: u64, vmo: &Vmo, ) -> Result<bool, Status>

Instructs the pager to watch for the VMO_ZERO_CHILDREN signal on vmo for key.

If the file is currently held weakly by the packet receiver, this method upgrades it to a Strong reference to prevent the file from being deallocated while clients have active mappings, and registers the signal wait on vmo. Returns Ok(true) if a transition to Strong occurred.

pub fn unregister(&self, key: u64)

Unregisters and drops the packet receiver registration for key.

pub fn unregister_all(&self)

Unregisters and discards all active packet receiver registrations.