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Add mutex_lock_killable

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Similar to mutex_lock_interruptible, it can be interrupted by a fatal
signal only.

Signed-off-by: Liam R. Howlett <howlett@gmail.com>
Acked-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Matthew Wilcox <willy@linux.intel.com>
This commit is contained in:
Liam R. Howlett
2007-12-06 17:37:59 -05:00
committed by Matthew Wilcox
parent 0b94e97a25
commit ad776537cc
2 changed files with 38 additions and 3 deletions
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include/linux/mutex.h
+5
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@@ -125,15 +125,20 @@ static inline int fastcall mutex_is_locked(struct mutex *lock)
extern void mutex_lock_nested(struct mutex *lock, unsigned int subclass);
extern int __must_check mutex_lock_interruptible_nested(struct mutex *lock,
unsigned int subclass);
extern int __must_check mutex_lock_killable_nested(struct mutex *lock,
unsigned int subclass);
#define mutex_lock(lock) mutex_lock_nested(lock, 0)
#define mutex_lock_interruptible(lock) mutex_lock_interruptible_nested(lock, 0)
#define mutex_lock_killable(lock) mutex_lock_killable_nested(lock, 0)
#else
extern void fastcall mutex_lock(struct mutex *lock);
extern int __must_check fastcall mutex_lock_interruptible(struct mutex *lock);
extern int __must_check fastcall mutex_lock_killable(struct mutex *lock);
# define mutex_lock_nested(lock, subclass) mutex_lock(lock)
# define mutex_lock_interruptible_nested(lock, subclass) mutex_lock_interruptible(lock)
# define mutex_lock_killable_nested(lock, subclass) mutex_lock_killable(lock)
#endif
/*