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Commit 3a66d7dc authored by Bart Van Assche's avatar Bart Van Assche Committed by Nicholas Bellinger
Browse files

kref: Remove kref_put_spinlock_irqsave() 



The last user is gone. Hence remove this function.

Signed-off-by: default avatarBart 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: default avatarNicholas Bellinger <nab@linux-iscsi.org>
parent 9ff9d15e

include/linux/kref.h

+0 −33
Original line number Diff line number Diff line
@@ -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)