[Unified] Fix UnifiedRadixCache write_backup issue in write-back mode(#27108)

Co-authored-by: hzh0425 <hzh0425@apache.org>
2026-06-11 08:28:24 +08:00
parent 740305e1d9
commit db061e97c0
2 changed files with 33 additions and 1 deletions
@@ -1424,7 +1424,9 @@ class UnifiedRadixCache(KVCacheEventMixin, BasePrefixCache):
                self.cache_controller is not None
                and self.cache_controller.write_policy == "write_back"
            ):
-                self.write_backup(node, write_back=True)
+                written = self.write_backup(node, write_back=True)
+                if written == 0:
+                    return
                self.writing_check(write_back=True)
                self._evict_to_host(node, tracker)
                return