Commit 9647b6c5 authored Apr 14, 2025 by Danilo Krummrich

rust: types: add `Opaque::zeroed`



Analogous to `Opaque::uninit` add `Opaque::zeroed`, which sets the
corresponding memory to zero. In contrast to `Opaque::uninit`, the
corresponding value, depending on its type, may be initialized.

Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: Alice Ryhl <aliceryhl@google.com>
Acked-by: Miguel Ojeda <ojeda@kernel.org>
Link: https://lore.kernel.org/r/20250414131934.28418-2-dakr@kernel.org


Signed-off-by: Danilo Krummrich <dakr@kernel.org>

parent a38dfd60

rust/kernel/types.rs

+8 −0

Original line number	Diff line number	Diff line
		@@ -329,6 +329,14 @@ pub const fn uninit() -> Self {
		}
		}

		/// Creates a new zeroed opaque value.
		pub const fn zeroed() -> Self {
		Self {
		value: UnsafeCell::new(MaybeUninit::zeroed()),
		_pin: PhantomPinned,
		}
		}

		/// Create an opaque pin-initializer from the given pin-initializer.
		pub fn pin_init(slot: impl PinInit<T>) -> impl PinInit<Self> {
		Self::ffi_init(\|ptr: *mut T\| {