crimson/common/operation: document a potential trivial issue

Signed-off-by: Yingxin Cheng <yingxin.cheng@intel.com>

diff --git a/src/crimson/common/operation.h b/src/crimson/common/operation.h
index b0ac033a8cd302d63f4dfcccbd0098a1c1153c59..3a65a793a9e115574e6765cabd1e7f00e90af3c7 100644 (file)
--- a/src/crimson/common/operation.h
+++ b/src/crimson/common/operation.h
@@ -479,6 +479,8 @@ public:
   virtual std::optional<seastar::future<>> wait() = 0;
 
   /// Releases pipeline resources, after or without waiting
+  // FIXME: currently, exit() will discard the associated future even if it is
+  // still unresolved, which is discouraged by seastar.
   virtual void exit() = 0;
 
   /// Must ensure that resources are released, likely by calling exit()