Fix opened file locking #58
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The same OpenedFile can be accessed from multiple processes (from a forked processes) and Arc<SpinLock<OpenedFile>> leads to a busy spin lock if, for example, read blocks. Make its locking more fine-grained to prenvet the busy loop.
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The same OpenedFile can be accessed from multiple processes (from a forked processes) and
Arc<SpinLock<OpenedFile>>leads to a busy spin lock if, for example, read blocks.Make its locking more fine-grained to prenvet the busy loop.