kref: Remove kref_put_spinlock_irqsave()

The last user is gone. Hence remove this function.

Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Joern Engel <joern@logfs.org>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>

diff --git a/include/linux/kref.h b/include/linux/kref.h
index 484604d184be7380807868d9a12edc80e9064db3..e15828fd71f1b589780b933549e3b07c9652c1e9 100644 (file)
--- a/include/linux/kref.h
+++ b/include/linux/kref.h
@@ -19,7 +19,6 @@
 #include <linux/atomic.h>
 #include <linux/kernel.h>
 #include <linux/mutex.h>
-#include <linux/spinlock.h>
 
 struct kref {
        atomic_t refcount;
@@ -99,38 +98,6 @@ static inline int kref_put(struct kref *kref, void (*release)(struct kref *kref)
        return kref_sub(kref, 1, release);
 }
 
-/**
- * kref_put_spinlock_irqsave - decrement refcount for object.
- * @kref: object.
- * @release: pointer to the function that will clean up the object when the
- *          last reference to the object is released.
- *          This pointer is required, and it is not acceptable to pass kfree
- *          in as this function.
- * @lock: lock to take in release case
- *
- * Behaves identical to kref_put with one exception.  If the reference count
- * drops to zero, the lock will be taken atomically wrt dropping the reference
- * count.  The release function has to call spin_unlock() without _irqrestore.
- */
-static inline int kref_put_spinlock_irqsave(struct kref *kref,
-               void (*release)(struct kref *kref),
-               spinlock_t *lock)
-{
-       unsigned long flags;
-
-       WARN_ON(release == NULL);
-       if (atomic_add_unless(&kref->refcount, -1, 1))
-               return 0;
-       spin_lock_irqsave(lock, flags);
-       if (atomic_dec_and_test(&kref->refcount)) {
-               release(kref);
-               local_irq_restore(flags);
-               return 1;
-       }
-       spin_unlock_irqrestore(lock, flags);
-       return 0;
-}
-
 static inline int kref_put_mutex(struct kref *kref,
                                 void (*release)(struct kref *kref),
                                 struct mutex *lock)