From 80ffa7de3147b27c82667a7e2224439f92106f92 Mon Sep 17 00:00:00 2001
From: Justus Winter <4winter@informatik.uni-hamburg.de>
Date: Sun, 16 Aug 2015 02:18:47 +0200
Subject: codify locking contracts

---
 ipc/ipc_object.h | 1 +
 1 file changed, 1 insertion(+)

(limited to 'ipc/ipc_object.h')

diff --git a/ipc/ipc_object.h b/ipc/ipc_object.h
index 8504a23..e43c7d2 100644
--- a/ipc/ipc_object.h
+++ b/ipc/ipc_object.h
@@ -89,6 +89,7 @@ extern struct kmem_cache ipc_object_caches[IOT_NUMBER];
 #define	io_lock(io)		lock_write(&(io)->io_lock_data)
 #define	io_lock_try(io)		lock_try_write(&(io)->io_lock_data)
 #define	io_unlock(io)		lock_write_done(&(io)->io_lock_data)
+#define have_io_lock(io)	have_write_lock(&(io)->io_lock_data)
 
 #define io_check_unlock(io) 						\
 MACRO_BEGIN								\
-- 
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