linux-kernel - Re: [PATCH] rust: seq_file: replace `kernel::c

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Message-ID: <CAJ-ks9kDy2_A+Zt4jO_h-=yzDjN024e1pmDy4kBrr5jsbJxvtQ@mail.gmail.com>
Date: Sat, 3 Jan 2026 21:29:10 -0500
From: Tamir Duberstein <tamird@...il.com>
To: Alexander Viro <viro@...iv.linux.org.uk>, Christian Brauner <brauner@...nel.org>, Jan Kara <jack@...e.cz>, 
	Miguel Ojeda <ojeda@...nel.org>, Boqun Feng <boqun.feng@...il.com>, Gary Guo <gary@...yguo.net>, 
	Björn Roy Baron <bjorn3_gh@...tonmail.com>, 
	Benno Lossin <lossin@...nel.org>, Andreas Hindborg <a.hindborg@...nel.org>, 
	Alice Ryhl <aliceryhl@...gle.com>, Trevor Gross <tmgross@...ch.edu>, 
	Danilo Krummrich <dakr@...nel.org>
Cc: linux-fsdevel@...r.kernel.org, rust-for-linux@...r.kernel.org, 
	linux-kernel@...r.kernel.org, Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: Re: [PATCH] rust: seq_file: replace `kernel::c_str!` with C-Strings

On Mon, Dec 22, 2025 at 7:19 AM Tamir Duberstein <tamird@...nel.org> wrote:
>
> From: Tamir Duberstein <tamird@...il.com>
>
> C-String literals were added in Rust 1.77. Replace instances of
> `kernel::c_str!` with C-String literals where possible.
>
> Acked-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
> Reviewed-by: Alice Ryhl <aliceryhl@...gle.com>
> Reviewed-by: Benno Lossin <lossin@...nel.org>
> Signed-off-by: Tamir Duberstein <tamird@...il.com>
> ---
>  rust/kernel/seq_file.rs | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/rust/kernel/seq_file.rs b/rust/kernel/seq_file.rs
> index 855e533813a6..518265558d66 100644
> --- a/rust/kernel/seq_file.rs
> +++ b/rust/kernel/seq_file.rs
> @@ -4,7 +4,7 @@
>  //!
>  //! C header: [`include/linux/seq_file.h`](srctree/include/linux/seq_file.h)
>
> -use crate::{bindings, c_str, fmt, str::CStrExt as _, types::NotThreadSafe, types::Opaque};
> +use crate::{bindings, fmt, str::CStrExt as _, types::NotThreadSafe, types::Opaque};
>
>  /// A utility for generating the contents of a seq file.
>  #[repr(transparent)]
> @@ -36,7 +36,7 @@ pub fn call_printf(&self, args: fmt::Arguments<'_>) {
>          unsafe {
>              bindings::seq_printf(
>                  self.inner.get(),
> -                c_str!("%pA").as_char_ptr(),
> +                c"%pA".as_char_ptr(),
>                  core::ptr::from_ref(&args).cast::<crate::ffi::c_void>(),
>              );
>          }
>
> ---
> base-commit: 8f0b4cce4481fb22653697cced8d0d04027cb1e8
> change-id: 20251222-cstr-vfs-55ca2ceca0a4
>
> Best regards,
> --
> Tamir Duberstein <tamird@...il.com>
>

@Christian could you please have a look?

Cheers.
Tamir