//! Per-platform writeback pipeline. On Linux, drains dirty pages
//! continuously at chunk granularity to keep the kernel's writeback
//! queue bounded. On macOS and Windows, a no-op stub.
//!
//! The platform decision lives entirely in this file (the cfg-gated
//! `pub use` below). Callers — and `DiskWriter` itself — are
//! platform-independent.
pub use WritebackPipeline;
pub use WritebackPipeline;