feat: unifiedlog: add opt-in stricter mmap fsync mode#944
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Summary
Today we are leaving the OS backpressure on pages to schedule the flush to disk. This change enable a more urgent, fsync to disk to assure that all the bytes hit the storage in real time.
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Changes
Testing
just fmtjust lintjust testjust std-ci(if std/runtime paths are impacted)just nostd-ci(if embedded/no_std paths are impacted)pro-tip:
justwith no parameters in the root defaults tojust fmt,just lint, andjust test.Checklist
Breaking changes (if any)
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