Re: [PATCH v5 08/26] rust: alloc: add __GFP_NOWARN to `Flags`

[Alice Ryhl]

On Mon, Aug 12, 2024 at 8:24 PM Danilo Krummrich <dakr@xxxxxxxxxx> wrote:
>
> Some test cases in subsequent patches provoke allocation failures. Add
> `__GFP_NOWARN` to enable test cases to silence unpleasant warnings.
>
> Signed-off-by: Danilo Krummrich <dakr@xxxxxxxxxx>

Reviewed-by: Alice Ryhl <aliceryhl@xxxxxxxxxx>

>  rust/bindings/bindings_helper.h | 1 +
>  rust/kernel/alloc.rs            | 5 +++++
>  2 files changed, 6 insertions(+)
>
> diff --git a/rust/bindings/bindings_helper.h b/rust/bindings/bindings_helper.h
> index b940a5777330..7f781256fda9 100644
> --- a/rust/bindings/bindings_helper.h
> +++ b/rust/bindings/bindings_helper.h
> @@ -31,4 +31,5 @@ const gfp_t RUST_CONST_HELPER_GFP_KERNEL_ACCOUNT = GFP_KERNEL_ACCOUNT;
>  const gfp_t RUST_CONST_HELPER_GFP_NOWAIT = GFP_NOWAIT;
>  const gfp_t RUST_CONST_HELPER___GFP_ZERO = __GFP_ZERO;
>  const gfp_t RUST_CONST_HELPER___GFP_HIGHMEM = ___GFP_HIGHMEM;
> +const gfp_t RUST_CONST_HELPER___GFP_NOWARN = ___GFP_NOWARN;
>  const blk_features_t RUST_CONST_HELPER_BLK_FEAT_ROTATIONAL = BLK_FEAT_ROTATIONAL;
> diff --git a/rust/kernel/alloc.rs b/rust/kernel/alloc.rs
> index f0c80ab78602..295107777a12 100644
> --- a/rust/kernel/alloc.rs
> +++ b/rust/kernel/alloc.rs
> @@ -91,6 +91,11 @@ pub mod flags {
>      /// use any filesystem callback.  It is very likely to fail to allocate memory, even for very
>      /// small allocations.
>      pub const GFP_NOWAIT: Flags = Flags(bindings::GFP_NOWAIT);
> +
> +    /// Suppresses allocation failure reports.
> +    ///
> +    /// This is normally or'd with other flags.
> +    pub const __GFP_NOWARN: Flags = Flags(bindings::__GFP_NOWARN);
>  }
>
>  /// The kernel's [`Allocator`] trait.
> --
> 2.45.2
>