zone-write-locking · shipping

Zone write locking

A Linux mechanism that serializes covered write requests to the same sequential zone using a per-zone lock.

The upstream Linux 4.16-6.9 implementation resides in deadline or mq-deadline. Zone write plugging replaces it from Linux 6.10. This is not a global I/O order, a device ownership lock or a persistence guarantee; callers still supply valid offsets.

Relations

related

zone-write-plugging, zoned-block-device, zone-write-pointer

Citations

1. Western Digital, Zoned Storage: Write Ordering Control; locking through Linux 6.9 and plugging from Linux 6.10. (accessed 2026-10-16)
2. Linux v6.9, block/mq-deadline.c: deadline_fifo_request, deadline_next_request and request dispatch. (accessed 2026-10-16)
3. Hesela: ZNS resource limits and worked examples (accessed 2026-10-16)

JSON: /data/terms/zone-write-locking.json