linux-kernel - Re: [PATCH v2] rust: check type of `$ptr` in `container

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Message-ID: <CANiq72mWVRoiXisOSmwb6Dj4BSe-s1s+BTpRoU7Le9DVcvmsjQ@mail.gmail.com>
Date: Mon, 14 Apr 2025 15:57:14 +0200
From: Miguel Ojeda <miguel.ojeda.sandonis@...il.com>
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>, 
	Danilo Krummrich <dakr@...nel.org>, rust-for-linux@...r.kernel.org, 
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] rust: check type of `$ptr` in `container_of!`

On Mon, Apr 14, 2025 at 3:27 PM Tamir Duberstein <tamird@...il.com> wrote:
>
> `b4 prep --check` complains:
>   ● checkpatch.pl: :207: ERROR: Avoid using diff content in the commit
> message - patch(1) might not work
>
> What do you suggest?

(It is `checkpatch.pl` the one that complains, no?)

I don't think it really matters, since `git am` is OK with it. So
unless you are sending the patch to a subsystem that still uses
`patch` or `quilt` or similar, and those are quite rare nowadays, I
wouldn't worry.

But if you care and want to be extra nice, then I would suggest doing
what others do, i.e. checking the Git log. That tells me to use `>` or
`:`, since they seem to be common. I don't see `;`.

I would also recommend patching `patch`... :)

Thanks for clarifying!

Cheers,
Miguel