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Diffstat (limited to 'include/linux/mutex.h')
-rw-r--r--include/linux/mutex.h25
1 files changed, 3 insertions, 22 deletions
diff --git a/include/linux/mutex.h b/include/linux/mutex.h
index dcd03fee6e01..aca8f36dfac9 100644
--- a/include/linux/mutex.h
+++ b/include/linux/mutex.h
@@ -66,16 +66,6 @@ struct mutex {
};
/*
- * Internal helper function; C doesn't allow us to hide it :/
- *
- * DO NOT USE (outside of mutex code).
- */
-static inline struct task_struct *__mutex_owner(struct mutex *lock)
-{
- return (struct task_struct *)(atomic_long_read(&lock->owner) & ~0x07);
-}
-
-/*
* This is the control structure for tasks blocked on mutex,
* which resides on the blocked task's kernel stack:
*/
@@ -144,10 +134,7 @@ extern void __mutex_init(struct mutex *lock, const char *name,
*
* Returns true if the mutex is locked, false if unlocked.
*/
-static inline bool mutex_is_locked(struct mutex *lock)
-{
- return __mutex_owner(lock) != NULL;
-}
+extern bool mutex_is_locked(struct mutex *lock);
/*
* See kernel/locking/mutex.c for detailed documentation of these APIs.
@@ -220,13 +207,7 @@ enum mutex_trylock_recursive_enum {
* - MUTEX_TRYLOCK_SUCCESS - lock acquired,
* - MUTEX_TRYLOCK_RECURSIVE - we already owned the lock.
*/
-static inline /* __deprecated */ __must_check enum mutex_trylock_recursive_enum
-mutex_trylock_recursive(struct mutex *lock)
-{
- if (unlikely(__mutex_owner(lock) == current))
- return MUTEX_TRYLOCK_RECURSIVE;
-
- return mutex_trylock(lock);
-}
+extern /* __deprecated */ __must_check enum mutex_trylock_recursive_enum
+mutex_trylock_recursive(struct mutex *lock);
#endif /* __LINUX_MUTEX_H */