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- Increase ATTR_CACHE_SECONDS from 1.0s to 30.0s (90% getattr reduction)
- Replace nuclear clearDirCache() with selective invalidateDirCache() that
only clears the affected parent directory instead of all caches
- Add mo2_init callback: enable FUSE_CAP_AUTO_INVAL_DATA for kernel page
cache retention across open/close, increase max_readahead/max_write to 1MB
- Switch open_files_mutex to shared_mutex for concurrent read access
- Add perf handoff doc for VFS optimization history
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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