[PATCH 1/2] rust: str: use the "kernel vertical" imports style

[PATCH 1/2] rust: str: use the "kernel vertical" imports style

[Miguel Ojeda]

Format the Rust prelude to use the "kernel vertical" imports style [1].

No functional changes intended.

Link: https://docs.kernel.org/rust/coding-guidelines.html#imports [1]
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
---
 rust/kernel/str.rs | 24 +++++++++++++++++++-----
 1 file changed, 19 insertions(+), 5 deletions(-)

diff --git a/rust/kernel/str.rs b/rust/kernel/str.rs
index a435674f05ea..4eae05e4baf9 100644
--- a/rust/kernel/str.rs
+++ b/rust/kernel/str.rs
@@ -3,14 +3,28 @@
 //! String representations.
 
 use crate::{
-    alloc::{flags::*, AllocError, KVec},
-    error::{to_result, Result},
-    fmt::{self, Write},
-    prelude::*,
+    alloc::{
+        flags::*,
+        AllocError,
+        KVec, //
+    },
+    error::{
+        to_result,
+        Result, //
+    },
+    fmt::{
+        self,
+        Write, //
+    },
+    prelude::*, //
 };
 use core::{
     marker::PhantomData,
-    ops::{Deref, DerefMut, Index},
+    ops::{
+        Deref,
+        DerefMut,
+        Index, //
+    }, //
 };
 
 pub use crate::prelude::CStr;
-- 
2.54.0

[PATCH 2/2] rust: str: clean unused import for Rust >= 1.98

[Miguel Ojeda]

Starting with Rust 1.98.0 (expected 2026-08-20), the compiler has changed
how the resolution algorithm works [1][2] in upstream commit c4d84db5f184
("Resolver: Batched import resolution."), and it now spots:

    error: unused import: `flags::*`
     --> rust/kernel/str.rs:7:9
      |
    7 |         flags::*,
      |         ^^^^^^^^
      |
      = note: `-D unused-imports` implied by `-D warnings`
      = help: to override `-D warnings` add `#[allow(unused_imports)]`

It happens to not be needed because the `prelude::*` already provides
the flags.

Thus clean it up.

Cc: stable@vger.kernel.org # Needed in 6.18.y and later (prelude added to `str`).
Link: https://github.com/rust-lang/rust/pull/145108 [1]
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
---
 rust/kernel/str.rs | 1 -
 1 file changed, 1 deletion(-)

diff --git a/rust/kernel/str.rs b/rust/kernel/str.rs
index 4eae05e4baf9..b3caa9a1c898 100644
--- a/rust/kernel/str.rs
+++ b/rust/kernel/str.rs
@@ -4,7 +4,6 @@
 
 use crate::{
     alloc::{
-        flags::*,
         AllocError,
         KVec, //
     },
-- 
2.54.0

Re: [PATCH 2/2] rust: str: clean unused import for Rust >= 1.98

[Alice Ryhl]

On Tue, Jun 9, 2026 at 12:42 PM Miguel Ojeda <ojeda@kernel.org> wrote:
>
> Starting with Rust 1.98.0 (expected 2026-08-20), the compiler has changed
> how the resolution algorithm works [1][2] in upstream commit c4d84db5f184
> ("Resolver: Batched import resolution."), and it now spots:
>
>     error: unused import: `flags::*`
>      --> rust/kernel/str.rs:7:9
>       |
>     7 |         flags::*,
>       |         ^^^^^^^^
>       |
>       = note: `-D unused-imports` implied by `-D warnings`
>       = help: to override `-D warnings` add `#[allow(unused_imports)]`
>
> It happens to not be needed because the `prelude::*` already provides
> the flags.
>
> Thus clean it up.
>
> Cc: stable@vger.kernel.org # Needed in 6.18.y and later (prelude added to `str`).
> Link: https://github.com/rust-lang/rust/pull/145108 [1]
> Signed-off-by: Miguel Ojeda <ojeda@kernel.org>

I ran into this one too.

Reviewed-by: Alice Ryhl <aliceryhl@google.com>

Re: [PATCH 2/2] rust: str: clean unused import for Rust >= 1.98

[Gary Guo]

On Tue Jun 9, 2026 at 11:41 AM BST, Miguel Ojeda wrote:
> Starting with Rust 1.98.0 (expected 2026-08-20), the compiler has changed
> how the resolution algorithm works [1][2] in upstream commit c4d84db5f184
> ("Resolver: Batched import resolution."), and it now spots:
> 
>     error: unused import: `flags::*`
>      --> rust/kernel/str.rs:7:9
>       |
>     7 |         flags::*,
>       |         ^^^^^^^^
>       |
>       = note: `-D unused-imports` implied by `-D warnings`
>       = help: to override `-D warnings` add `#[allow(unused_imports)]`
> 
> It happens to not be needed because the `prelude::*` already provides
> the flags.
> 
> Thus clean it up.
> 
> Cc: stable@vger.kernel.org # Needed in 6.18.y and later (prelude added to `str`).
> Link: https://github.com/rust-lang/rust/pull/145108 [1]
> Signed-off-by: Miguel Ojeda <ojeda@kernel.org>

Reviewed-by: Gary Guo <gary@garyguo.net>

> ---
>  rust/kernel/str.rs | 1 -
>  1 file changed, 1 deletion(-)

Re: [PATCH 1/2] rust: str: use the "kernel vertical" imports style

[Gary Guo]

On Tue Jun 9, 2026 at 11:41 AM BST, Miguel Ojeda wrote:
> Format the Rust prelude to use the "kernel vertical" imports style [1].
> 
> No functional changes intended.
> 
> Link: https://docs.kernel.org/rust/coding-guidelines.html#imports [1]
> Signed-off-by: Miguel Ojeda <ojeda@kernel.org>

Reviewed-by: Gary Guo <gary@garyguo.net>

> ---
>  rust/kernel/str.rs | 24 +++++++++++++++++++-----
>  1 file changed, 19 insertions(+), 5 deletions(-)