//! File-backed piece/block storage. One bounded writer task owns each destination;
//! dropping a response waiter never cancels I/O. Only hash matches after completed
//! writes become available.
pub
pub
use io;
/// Piece indices whose stored bytes may have changed. Sorted, without duplicates.
pub type PieceSet = ;
/// Publish an encoded resume checkpoint. Failure stops the storage owner.
pub type Checkpoint = ;