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03e8578813
Guard is marked #[must_use] since dropping it releases the lock. GlobalGuard wraps Guard with identical semantics but was missing the annotation, so discarding it would silently compile without warning. Similarly, GlobalLock::try_lock was missing #[must_use]. Option<T> does not propagate #[must_use] from T, so the attribute needs to be on the function directly - same reason Lock::try_lock has it. Reviewed-by: Alice Ryhl <aliceryhl@google.com> Signed-off-by: Ashutosh Desai <ashutoshdesai993@gmail.com> Reviewed-by: Gary Guo <gary@garyguo.net> Link: https://patch.msgid.link/20260502160057.3402896-1-ashutoshdesai993@gmail.com Signed-off-by: Miguel Ojeda <ojeda@kernel.org>