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-rw-r--r--include/linux/mutex.h5
1 files changed, 3 insertions, 2 deletions
diff --git a/include/linux/mutex.h b/include/linux/mutex.h
index b81bc2adaef..0d50ea3df68 100644
--- a/include/linux/mutex.h
+++ b/include/linux/mutex.h
@@ -121,11 +121,12 @@ static inline int fastcall mutex_is_locked(struct mutex *lock)
* Also see Documentation/mutex-design.txt.
*/
extern void fastcall mutex_lock(struct mutex *lock);
-extern int fastcall mutex_lock_interruptible(struct mutex *lock);
+extern int __must_check fastcall mutex_lock_interruptible(struct mutex *lock);
#ifdef CONFIG_DEBUG_LOCK_ALLOC
extern void mutex_lock_nested(struct mutex *lock, unsigned int subclass);
-extern int mutex_lock_interruptible_nested(struct mutex *lock, unsigned int subclass);
+extern int __must_check mutex_lock_interruptible_nested(struct mutex *lock,
+ unsigned int subclass);
#else
# define mutex_lock_nested(lock, subclass) mutex_lock(lock)
# define mutex_lock_interruptible_nested(lock, subclass) mutex_lock_interruptible(lock)