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cpython

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    Alexey Izbyshev authored and GitHub committed
    #92301: subprocess: Prefer `close_range()` to procfs-based fd closing.
    
    `close_range()` is much faster for large number of file descriptors, e.g.
    4 times faster for 1000 descriptors in a Linux 5.16-based environment.
    
    We prefer close_range() only if it's known to be async-signal-safe.
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