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-rw-r--r--include/linux/kref.h33
1 files changed, 0 insertions, 33 deletions
diff --git a/include/linux/kref.h b/include/linux/kref.h
index 484604d184be..e15828fd71f1 100644
--- a/include/linux/kref.h
+++ b/include/linux/kref.h
@@ -19,7 +19,6 @@
19#include <linux/atomic.h> 19#include <linux/atomic.h>
20#include <linux/kernel.h> 20#include <linux/kernel.h>
21#include <linux/mutex.h> 21#include <linux/mutex.h>
22#include <linux/spinlock.h>
23 22
24struct kref { 23struct kref {
25 atomic_t refcount; 24 atomic_t refcount;
@@ -99,38 +98,6 @@ static inline int kref_put(struct kref *kref, void (*release)(struct kref *kref)
99 return kref_sub(kref, 1, release); 98 return kref_sub(kref, 1, release);
100} 99}
101 100
102/**
103 * kref_put_spinlock_irqsave - decrement refcount for object.
104 * @kref: object.
105 * @release: pointer to the function that will clean up the object when the
106 * last reference to the object is released.
107 * This pointer is required, and it is not acceptable to pass kfree
108 * in as this function.
109 * @lock: lock to take in release case
110 *
111 * Behaves identical to kref_put with one exception. If the reference count
112 * drops to zero, the lock will be taken atomically wrt dropping the reference
113 * count. The release function has to call spin_unlock() without _irqrestore.
114 */
115static inline int kref_put_spinlock_irqsave(struct kref *kref,
116 void (*release)(struct kref *kref),
117 spinlock_t *lock)
118{
119 unsigned long flags;
120
121 WARN_ON(release == NULL);
122 if (atomic_add_unless(&kref->refcount, -1, 1))
123 return 0;
124 spin_lock_irqsave(lock, flags);
125 if (atomic_dec_and_test(&kref->refcount)) {
126 release(kref);
127 local_irq_restore(flags);
128 return 1;
129 }
130 spin_unlock_irqrestore(lock, flags);
131 return 0;
132}
133
134static inline int kref_put_mutex(struct kref *kref, 101static inline int kref_put_mutex(struct kref *kref,
135 void (*release)(struct kref *kref), 102 void (*release)(struct kref *kref),
136 struct mutex *lock) 103 struct mutex *lock)