[PATCH] rust: prelude: add `zerocopy{,_derive}::IntoBytes`

[PATCH] rust: prelude: add `zerocopy{,_derive}::IntoBytes`

[Gary Guo]

From: Gary Guo <gary@garyguo.net>

In order to easily use `IntoBytes`, add it to the prelude.

This adds both the trait (`zerocopy::IntoBytes`) as well as the derive
macro (`zerocopy_derive::IntoBytes`).

Signed-off-by: Gary Guo <gary@garyguo.net>
---
This is wanted because I want to convert the upcoming I/O projection series
to use `zerocopy` traits rather than keep using transmute module.

It is most helpful for derives in doc tests; I do not want to explicitly use
`#[derive(zerocopy_derive::IntoBytes)]` in the doc tests.
---
 rust/kernel/prelude.rs | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/rust/kernel/prelude.rs b/rust/kernel/prelude.rs
index ca260cc3937a..a97cb0af5d02 100644
--- a/rust/kernel/prelude.rs
+++ b/rust/kernel/prelude.rs
@@ -61,10 +61,16 @@
 };
 
 #[doc(no_inline)]
-pub use zerocopy::FromBytes;
+pub use zerocopy::{
+    FromBytes,
+    IntoBytes, //
+};
 
 #[doc(no_inline)]
-pub use zerocopy_derive::FromBytes;
+pub use zerocopy_derive::{
+    FromBytes,
+    IntoBytes, //
+};
 
 #[doc(no_inline)]
 pub use super::{

base-commit: 98cc68794c003bc76fc9da2e8a075e947eee5921
-- 
2.54.0

Re: [PATCH] rust: prelude: add `zerocopy{,_derive}::IntoBytes`

[Miguel Ojeda]

On Thu, Jun 11, 2026 at 3:48 PM Gary Guo <gary@kernel.org> wrote:
>
> In order to easily use `IntoBytes`, add it to the prelude.
>
> This adds both the trait (`zerocopy::IntoBytes`) as well as the derive
> macro (`zerocopy_derive::IntoBytes`).
>
> Signed-off-by: Gary Guo <gary@garyguo.net>

Applied to `rust-next` (for a potential second PR to Linus) -- thanks!

    [ This patch will simplify using the feature in several trees next cycle.

      Gary writes:

        This is wanted because I want to convert the upcoming I/O projection
        series to use `zerocopy` traits rather than keep using transmute
        module.

        It is most helpful for derives in doc tests; I do not want to
        explicitly use `#[derive(zerocopy_derive::IntoBytes)]` in the
        doc tests.

      For reference, the upcoming I/O projection series is at:

        https://lore.kernel.org/rust-for-linux/20260611-io_projection-v4-0-1f7224b02dcb@garyguo.net/

          - Miguel ]

There should no build errors from what I tested, but if there are, we
should discover them during this week or so. Worst case, we drop the
trait and keep the derive as discussed.

Cheers,
Miguel