From cefbc0d19bbfb14776078359c4a67442b0849803 Mon Sep 17 00:00:00 2001
From: Pawel Jakub Dawidek <pjd@FreeBSD.org>
Date: Sat, 25 Apr 2020 21:41:09 +0000
Subject: [PATCH] Add g_topology_locked() macro that returns true if we already
 hold the GEOM topology lock.

---
 sys/geom/geom.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/sys/geom/geom.h b/sys/geom/geom.h
index 0580080ca1e6..e506bf6ae8a5 100644
--- a/sys/geom/geom.h
+++ b/sys/geom/geom.h
@@ -395,6 +395,8 @@ g_free(void *ptr)
 		sx_xunlock(&topology_lock);			\
 	} while (0)
 
+#define g_topology_locked()	sx_xlocked(&topology_lock)
+
 #define g_topology_assert()					\
 	do {							\
 		sx_assert(&topology_lock, SX_XLOCKED);		\