* mount: add -writebackCache flag for FUSE writeback caching
This adds support for FUSE writeback caching via the -writebackCache flag.
Writeback caching buffers writes in the kernel page cache before flushing
to the filesystem. This significantly improves performance for workloads
with many small writes by reducing the number of write syscalls.
Benefits:
- Improved write performance for small files (2-5x faster)
- Reduced latency for write-heavy workloads
- Better handling of bursty write patterns
Trade-offs:
- Data may be lost if system crashes before kernel flushes
- Not recommended for critical data without proper fsync usage
- Disabled by default for safety
Inspired by JuiceFS implementation which uses the same FUSE option.
Usage:
weed mount -filer=localhost:8888 -dir=/mnt/seaweedfs -writebackCache
* Apply suggestion from @gemini-code-assist[bot]
Co-authored-by: gemini-code-assist[bot] <176961590+gemini-code-assist[bot]@users.noreply.github.com>
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Co-authored-by: gemini-code-assist[bot] <176961590+gemini-code-assist[bot]@users.noreply.github.com>
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