linux-kernel - Re: [PATCH v4 3/3] rust: error: Replace pr_warn by pr_warn

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Message-ID: <ODKVmiV--F-9@tuta.io>
Date: Thu, 5 Dec 2024 07:30:21 +0100 (CET)
From: jens.korinth@...a.io
To: Miguel Ojeda <miguel.ojeda.sandonis@...il.com>
Cc: Miguel Ojeda <ojeda@...nel.org>, Alex Gaynor <alex.gaynor@...il.com>,
	Boqun Feng <boqun.feng@...il.com>, Gary Guo <gary@...yguo.net>,
	Björn Roy Baron <bjorn3_gh@...tonmail.com>,
	Benno Lossin <benno.lossin@...ton.me>,
	Andreas Hindborg <a.hindborg@...nel.org>,
	Alice Ryhl <aliceryhl@...gle.com>, Trevor Gross <tmgross@...ch.edu>,
	Rust For Linux <rust-for-linux@...r.kernel.org>,
	FUJITA Tomonori <fujita.tomonori@...il.com>,
	Dirk Behme <dirk.behme@...il.com>,
	Linux Kernel <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v4 3/3] rust: error: Replace pr_warn by pr_warn_once

Sorry for the late response, the usual madness at the end of the year is
setting in.

> Do you mean removing the function altogether? i.e. migrating all
> callers to `try_from_errno`?

I think it should be `TryFrom`. The `std::From` doc [1] says:

    Note: This trait must not fail. The From trait is intended for perfect
    conversions. If the conversion can fail or is not perfect, use TryFrom.

[1]: https://doc.rust-lang.org/std/convert/trait.From.html

Jens