rust: sync: document PhantomData in Arc

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Add a comment explaining the relevant semantics of `PhantomData`. This
should help future readers who may, as I did, assume that this field is
redundant at first glance.

Signed-off-by: Tamir Duberstein <tamird@gmail.com>
Reviewed-by: Alice Ryhl <aliceryhl@google.com>
Link: https://lore.kernel.org/r/20241107-simplify-arc-v2-1-7256e638aac1@gmail.com
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>

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Tamir Duberstein 2024-11-07 05:36:46 -05:00 • committed by Miguel Ojeda

parent 3f4223c007

commit 2dde1c8b04

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rust/kernel/sync/arc.rs

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