Implement g_topology_try_lock().

No objection from: phk
2004-12-21 18:32:46 +00:00 · 2004-12-21 18:32:46 +00:00 · 54bab03f04
commit 54bab03f04
parent 18cd97621d
1 changed files with 2 additions and 0 deletions
--- a/sys/geom/geom.h
+++ b/sys/geom/geom.h
@ -310,6 +310,8 @@ extern struct sx topology_lock;
 		sx_xlock(&topology_lock);			\
 	} while (0)

+#define g_topology_try_lock()	sx_try_xlock(&topology_lock)
+
 #define g_topology_unlock()					\
 	do {							\
 		sx_xunlock(&topology_lock);			\