ircd:Ⓜ️ Add db::sopts passthru in dbs::write_opts.

include/ircd/m/dbs/dbs.h

@@ -71,6 +71,9 @@ struct ircd::m::dbs::write_opts
 	/// actual transaction.
 	db::op op {db::op::SET};
 
+	/// Lower-level write options passed to the transaction's execution.
+	db::sopts sopts {(db::set)0};
+
 	/// Principal's index number. Most codepaths do not permit zero. This may
 	/// be zero for blacklisting, but the blacklist option must be set.
 	uint64_t event_idx {0};

matrix/vm_execute.cc

@@ -1172,6 +1172,12 @@ ircd::m::vm::write_commit(eval &eval)
 		*eval.txn
 	};
 
+	assert(eval.opts);
+	const auto &sopts
+	{
+		eval.opts->wopts.sopts
+	};
+
 	const auto db_seq_before
 	{
 		#ifdef RB_DEBUG
@@ -1188,7 +1194,7 @@ ircd::m::vm::write_commit(eval &eval)
 			write_commit_cycles
 		};
 
-		txn();
+		txn(wopts.sopts);
 	}
 
 	++write_commit_count;