Benno Lossin 701608bd03 rust: sync: reduce stack usage of UniqueArc::try_new_uninit ... `UniqueArc::try_new_uninit` calls `Arc::try_new(MaybeUninit::uninit())`. This results in the uninitialized memory being placed on the stack, which may be arbitrarily large due to the generic `T` and thus could cause a stack overflow for large types. Change the implementation to use the pin-init API which enables in-place initialization. In particular it avoids having to first construct and then move the uninitialized memory from the stack into the final location. Signed-off-by: Benno Lossin <benno.lossin@proton.me> Reviewed-by: Alice Ryhl <aliceryhl@google.com> Reviewed-by: Gary Guo <gary@garyguo.net> Reviewed-by: Andreas Hindborg <a.hindborg@samsung.com> Link: https://lore.kernel.org/r/20230408122429.1103522-15-y86-dev@protonmail.com Signed-off-by: Miguel Ojeda <ojeda@kernel.org>		2023-04-12 18:41:05 +02:00
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arc	rust: sync: arc: Implement Arc<dyn Any + Send + Sync>::downcast()	2023-04-10 23:55:43 +02:00
arc.rs	rust: sync: reduce stack usage of UniqueArc::try_new_uninit	2023-04-12 18:41:05 +02:00