From 9a3ce91ef54210d418318696dccdf0d14fe2b5fd Mon Sep 17 00:00:00 2001
From: b-naber <bn263@gmx.de>
Date: Mon, 14 Feb 2022 22:18:10 +0100
Subject: [PATCH] util: fix waker update condition in `CancellationToken`
 (#4497)

There was a missing exclamation mark in the condition we used to test
whether we need a waker update in `check_for_cancellation`.
---
 tokio-util/src/sync/cancellation_token.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tokio-util/src/sync/cancellation_token.rs b/tokio-util/src/sync/cancellation_token.rs
index f193f6bc3..8a89698c4 100644
--- a/tokio-util/src/sync/cancellation_token.rs
+++ b/tokio-util/src/sync/cancellation_token.rs
@@ -824,7 +824,7 @@ impl CancellationTokenState {
             let need_waker_update = wait_node
                 .task
                 .as_ref()
-                .map(|waker| waker.will_wake(cx.waker()))
+                .map(|waker| !waker.will_wake(cx.waker()))
                 .unwrap_or(true);
 
             if need_waker_update {