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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>
This commit is contained in:
Andrew Morton 2007-05-09 02:33:39 -07:00 committed by Linus Torvalds
parent ae030e435f
commit 18d8362d51
1 changed files with 3 additions and 2 deletions
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5
include/linux/mutex.h
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@ -121,11 +121,12 @@ static inline int fastcall mutex_is_locked(struct mutex *lock)
* Also see Documentation/mutex-design.txt. * Also see Documentation/mutex-design.txt.
*/ */
extern void fastcall mutex_lock(struct mutex *lock); 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 #ifdef CONFIG_DEBUG_LOCK_ALLOC
extern void mutex_lock_nested(struct mutex *lock, unsigned int subclass); 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 #else
# define mutex_lock_nested(lock, subclass) mutex_lock(lock) # define mutex_lock_nested(lock, subclass) mutex_lock(lock)
# define mutex_lock_interruptible_nested(lock, subclass) mutex_lock_interruptible(lock) # define mutex_lock_interruptible_nested(lock, subclass) mutex_lock_interruptible(lock)