linux-kernel - Re: [PATCH 3/3] kthread: Stop abusing TASK

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Message-ID: <YrpMIcECVOMPVpJN@google.com>
Date:   Tue, 28 Jun 2022 00:32:33 +0000
From:   Wedson Almeida Filho <wedsonaf@...gle.com>
To:     Peter Zijlstra <peterz@...radead.org>
Cc:     Tejun Heo <tj@...nel.org>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        "Eric W. Biederman" <ebiederm@...ssion.com>,
        Christian Brauner <brauner@...nel.org>,
        Petr Mladek <pmladek@...e.com>,
        Lai Jiangshan <jiangshanlai@...il.com>,
        Michal Hocko <mhocko@...e.com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Oleg Nesterov <oleg@...hat.com>
Subject: Re: [PATCH 3/3] kthread: Stop abusing TASK_UNINTERRUPTIBLE
 (INCOMPLETE)

On Tue, Jun 28, 2022 at 12:06:29AM +0200, Peter Zijlstra wrote:
> On Mon, Jun 27, 2022 at 06:04:12PM +0000, Wedson Almeida Filho wrote:
> 
> >   let new_thread = task::new_paused(|| pr_info!("Hello world\n"))?;
> 
> I'm still having a really hard time with this Rust stuff, the above
> looks like a syntax error and random characters to me :/

Peter, I meant to ask in my previous email: setting aside the syntax for
a moment, do you have an opinion on the sort of things that Rust allows
us to enforce at compile time (as exemplified in the new_paused()
fragment)?