/*

   * kref.h - library routines for handling generic reference counted objects

   *
   * Copyright (C) 2004 Greg Kroah-Hartman <greg@kroah.com>
   * Copyright (C) 2004 IBM Corp.
   *
   * based on kobject.h which was:
   * Copyright (C) 2002-2003 Patrick Mochel <mochel@osdl.org>
   * Copyright (C) 2002-2003 Open Source Development Labs
   *
   * This file is released under the GPLv2.
   *
   */
  
  #ifndef _KREF_H_
  #define _KREF_H_

  #include <linux/types.h>

  
  struct kref {
  	atomic_t refcount;
  };
  
  void kref_init(struct kref *kref);
  void kref_get(struct kref *kref);
  int kref_put(struct kref *kref, void (*release) (struct kref *kref));

  int kref_sub(struct kref *kref, unsigned int count,
  	     void (*release) (struct kref *kref));

  #endif /* _KREF_H_ */