1 files changed, 6 insertions, 1 deletions
diff --git a/synapse/storage/databases/main/roommember.py b/synapse/storage/databases/main/roommember.py
index c58a4b8690..9beeb96aa9 100644
--- a/synapse/storage/databases/main/roommember.py
+++ b/synapse/storage/databases/main/roommember.py
@@ -81,7 +81,7 @@ class RoomMemberWorkerStore(EventsWorkerStore):
         txn.close()
 
         if (
-            self.hs.config.run_background_tasks
+            self.hs.config.worker.run_background_tasks
             and self.hs.config.metrics_flags.known_servers
         ):
             self._known_servers_count = 1
@@ -196,6 +196,11 @@ class RoomMemberWorkerStore(EventsWorkerStore):
     ) -> Dict[str, ProfileInfo]:
         """Get a mapping from user ID to profile information for all users in a given room.
 
+        The profile information comes directly from this room's `m.room.member`
+        events, and so may be specific to this room rather than part of a user's
+        global profile. To avoid privacy leaks, the profile data should only be
+        revealed to users who are already in this room.
+
         Args:
             room_id: The ID of the room to retrieve the users of.