skip exchange on equal

Signed-off-by: Ping Yu <[email protected]>
tikv · Oct 31, 2023 · a1afcc1 · a1afcc1
1 parent fdec181
commit a1afcc1
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/src/transaction/transaction.rs b/src/transaction/transaction.rs
@@ -988,6 +988,9 @@ impl<Cod: Codec, PdC: PdClient<Codec = Cod>> Transaction<Cod, PdC> {
     {
         let mut current = self.get_status();
         while check_status(current) {
+            if current == next {
+                return true;
+            }
             match self.status.compare_exchange_weak(
                 current as u8,
                 next as u8,