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-rw-r--r--security/apparmor/include/lib.h11
1 files changed, 11 insertions, 0 deletions
diff --git a/security/apparmor/include/lib.h b/security/apparmor/include/lib.h
index 4699c2b..61dedd7 100644
--- a/security/apparmor/include/lib.h
+++ b/security/apparmor/include/lib.h
@@ -19,6 +19,17 @@
#include "match.h"
+/* Provide our own test for whether a write lock is held for asserts
+ * this is because on none SMP systems write_can_lock will always
+ * resolve to true, which is what you want for code making decisions
+ * based on it, but wrong for asserts checking that the lock is held
+ */
+#ifdef CONFIG_SMP
+#define write_is_locked(X) !write_can_lock(X)
+#else
+#define write_is_locked(X) (1)
+#endif /* CONFIG_SMP */
+
/*
* DEBUG remains global (no per profile flag) since it is mostly used in sysctl
* which is not related to profile accesses.
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