linux-kernel - Re: [PATCH v16 2/4] rust: types: add `ForeignOwnable::PointedTo`

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Message-ID: <Z7NlUN7pSrDnSaMD@cassiopeiae>
Date: Mon, 17 Feb 2025 17:35:28 +0100
From: Danilo Krummrich <dakr@...nel.org>
To: Tamir Duberstein <tamird@...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>,
	Matthew Wilcox <willy@...radead.org>,
	Bjorn Helgaas <bhelgaas@...gle.com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	"Rafael J. Wysocki" <rafael@...nel.org>,
	FUJITA Tomonori <fujita.tomonori@...il.com>,
	"Rob Herring (Arm)" <robh@...nel.org>,
	Maíra Canal <mcanal@...lia.com>,
	Asahi Lina <lina@...hilina.net>, rust-for-linux@...r.kernel.org,
	linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-pci@...r.kernel.org, Fiona Behrens <me@...enk.dev>
Subject: Re: [PATCH v16 2/4] rust: types: add `ForeignOwnable::PointedTo`

On Mon, Feb 17, 2025 at 10:50:10AM -0500, Tamir Duberstein wrote:
> On Mon, Feb 17, 2025 at 9:52 AM Danilo Krummrich <dakr@...nel.org> wrote:
> >
> > On Mon, Feb 17, 2025 at 09:47:14AM -0500, Tamir Duberstein wrote:
> > > On Mon, Feb 17, 2025 at 9:37 AM Danilo Krummrich <dakr@...nel.org> wrote:
> > > > You're free to do the change (I encourage that), but that's of course up to you.
> > >
> > > I'll create a "good first issue" for it in the RfL repository.
> >
> > That's a good idea -- thanks.
> 
> What do you think about enabling clippy::ptr_as_ptr?
> https://rust-lang.github.io/rust-clippy/master/index.html#ptr_as_ptr

Seems reasonable to me, but I'm a bit out of competence here.

I know some lints are not stable and hence need to be treated with care, though
this doesn't seem to be one of them.

Additionally, I think the lint would need to be supported by all compiler
versions the kernel supports currently, which also seems to be the case (added
in: 1.51.0).

> 
> Do we currently enable any non-default clippy lints?

Yes, you can check the root Makefile [1].

[1] https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/Makefile?h=v6.14-rc3#n471