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authorAndrew Morton <akpm@linux-foundation.org>2007-05-09 13:33:39 +0400
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-05-09 23:30:49 +0400
commit18d8362d517cb2bd97761294924fe6c2a6ee5e3c (patch)
treefff49e54cb725ba33ddf4453fb866838ad6ceeca
parentae030e435f5400cff77c52506a8d3d7278f0947c (diff)
downloadlinux-18d8362d517cb2bd97761294924fe6c2a6ee5e3c.tar.xz
mutex_lock_interruptible(): add __must_check
It's not sane to use mutex_lock_interruptible() and to then ignore the result. Ditto down_interruptible(), but I'm lazy. Cc: Ingo Molnar <mingo@elte.hu> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
-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 b81bc2adaeff..0d50ea3df689 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)