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1b04b466c8
Use `checked_sub` to satisfy the safety requirements of `dec_len` and replace nearly the whole body of `truncate` with a call to `dec_len`. Reviewed-by: Andrew Ballance <andrewjballance@gmail.com> Reviewed-by: Alice Ryhl <aliceryhl@google.com> Signed-off-by: Tamir Duberstein <tamird@gmail.com> Link: https://lore.kernel.org/r/20250416-vec-set-len-v4-3-112b222604cd@gmail.com [ Remove #[expect(unused)] from dec_len(). - Danilo ] Signed-off-by: Danilo Krummrich <dakr@kernel.org>