Changyuan Lyu 7f18d0a281 memory_manager: improve memory region creation
Instead of making an owned `zones`, using an iterator is cheaper
since `Vec::remove` may have the performance O(n) [1].

[1]: https://doc.rust-lang.org/std/vec/struct.Vec.html#method.remove

Signed-off-by: Changyuan Lyu <changyuanl@google.com>
2023-07-10 11:54:05 -07:00
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