fuse-writeback-cache · shipping · also FUSE_WRITEBACK_CACHE

FUSE writeback-cache

FUSE writeback-cache is a negotiated mode that buffers file writes in the kernel page cache before forwarding them to a userspace filesystem.

Partial overwrites: the daemon may need to serve reads even for a write-only open. [2]

Coordination: external writers require an explicit coherence design; enabling the mode alone does not provide one. [1]

Relations

related

FUSE, Page cache, Write-back cache, Buffered I/O

Citations

1. Linux v6.12: FUSE I/O modes (accessed 2026-10-18)
2. libfuse 3.16.2: low-level open, flush, release and fsync contracts (accessed 2026-10-18)

Further reading

3. Hesela: FUSE writeback caching and the fsync contract (accessed 2026-10-18)

JSON: /data/terms/fuse-writeback-cache.json