{"id":"page-manager-4096-coincidence","text":"`PageManager` defaults to 4096-byte pages matching the OS page size and common disk sector size, but this is a coincidental match with `O_DIRECT` alignment requirements — the implementation uses buffered I/O through Python's `open()` and never enforces alignment","truth_value":"IN","source":"entries/2026/05/29/topic-o-direct-aligned-io.md","source_url":"","source_hash":"","justifications":[],"dependents":[],"metadata":{},"explanation":{"steps":[{"node":"page-manager-4096-coincidence","truth_value":"IN","reason":"premise"}]}}