From 3a68b65fe84395dcb37559ae1f35a073796421fe Mon Sep 17 00:00:00 2001
From: Jason Volk <jason@zemos.net>
Date: Fri, 5 Apr 2019 15:56:05 -0700
Subject: [PATCH] ircd::ctx: Optimize with no_stack_unwind attribute since it's
 done by us.

---
 ircd/ctx.cc | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/ircd/ctx.cc b/ircd/ctx.cc
index dd3e1899e..a214e6e81 100644
--- a/ircd/ctx.cc
+++ b/ircd/ctx.cc
@@ -62,8 +62,11 @@ ircd::ctx::spawn(ctx *const c,
 {
 	const boost::coroutines::attributes attrs
 	{
+		// Pass the requested stack size
 		c->stack.max,
-		boost::coroutines::stack_unwind
+
+		// We ensure stack unwinding and cleanup out here instead.
+		boost::coroutines::no_stack_unwind,
 	};
 
 	auto bound