@@ -4386,15 +4386,19 @@ static void
43864386pgstat_recv_inquiry (PgStat_MsgInquiry * msg ,int len )
43874387{
43884388slist_iter iter ;
4389- bool found = false;
43904389DBWriteRequest * newreq ;
43914390PgStat_StatDBEntry * dbentry ;
43924391
43934392elog (DEBUG2 ,"received inquiry for %d" ,msg -> databaseid );
43944393
43954394/*
4396- * Find the last write request for this DB (found=true in that case).
4397- * Plain linear search, not really worth doing any magic here (probably).
4395+ * Find the last write request for this DB. If it's older than the
4396+ * request's cutoff time, update it; otherwise there's nothing to do.
4397+ *
4398+ * Note that if a request is found, we return early and skip the below
4399+ * check for clock skew. This is okay, since the only way for a DB request
4400+ * to be present in the list is that we have been here since the last write
4401+ * round.
43984402 */
43994403slist_foreach (iter ,& last_statrequests )
44004404{
@@ -4405,7 +4409,6 @@ pgstat_recv_inquiry(PgStat_MsgInquiry *msg, int len)
44054409
44064410if (msg -> cutoff_time > req -> request_time )
44074411req -> request_time = msg -> cutoff_time ;
4408- found = true;
44094412return ;
44104413}
44114414