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From: Miguel Ojeda <miguel.ojeda.sandonis@gmail.com>
Date: Wed, 7 Jul 2021 15:49:12 +0200
Message-ID: <CANiq72n=8Do_9suDeJdwoF_8ZR-uLEj2r9cRSB_k=yTk_q0FHw@mail.gmail.com>
Subject: Re: [TECH TOPIC] Rust for Linux
To: James Bottomley <James.Bottomley@hansenpartnership.com>
Cc: Greg KH <greg@kroah.com>, Julia Lawall <julia.lawall@inria.fr>, 
	Laurent Pinchart <laurent.pinchart@ideasonboard.com>, 
	Linus Walleij <linus.walleij@linaro.org>, Roland Dreier <roland@kernel.org>, ksummit@lists.linux.dev
Content-Type: text/plain; charset="UTF-8"

On Wed, Jul 7, 2021 at 9:52 AM James Bottomley
<James.Bottomley@hansenpartnership.com> wrote:
>
> Rust has a reference counted pointer: Rc<T>.  However the problem is
> the rust memory model is via strict accounting, so once you start using
> refcounts, which need shared accounting, you can then get memory leaks
> and it's unclear if rust actually buys you anything over C for this use
> case.

Even if you are using `Rc<T>`, Rust buys you a *lot*. For starters, it
still prevents UB and data races -- e.g. it prevents mistakenly
sharing the `Rc` with other threads.

Cheers,
Miguel