/*
   * Copyright (C) Sistina Software, Inc.  1997-2003 All rights reserved.

   * Copyright (C) 2004-2006 Red Hat, Inc.  All rights reserved.

   *
   * This copyrighted material is made available to anyone wishing to use,
   * modify, copy, or redistribute it subject to the terms and conditions

   * of the GNU General Public License version 2.

   */
  
  #ifndef __QUOTA_DOT_H__
  #define __QUOTA_DOT_H__

  struct gfs2_inode;
  struct gfs2_sbd;

  struct shrink_control;

  #define NO_QUOTA_CHANGE ((u32)-1)

  extern int gfs2_quota_hold(struct gfs2_inode *ip, u32 uid, u32 gid);
  extern void gfs2_quota_unhold(struct gfs2_inode *ip);

  extern int gfs2_quota_lock(struct gfs2_inode *ip, u32 uid, u32 gid);
  extern void gfs2_quota_unlock(struct gfs2_inode *ip);

  extern int gfs2_quota_check(struct gfs2_inode *ip, u32 uid, u32 gid);
  extern void gfs2_quota_change(struct gfs2_inode *ip, s64 change,
  			      u32 uid, u32 gid);

  extern int gfs2_quota_sync(struct super_block *sb, int type, int wait);

  extern int gfs2_quota_refresh(struct gfs2_sbd *sdp, int user, u32 id);

  extern int gfs2_quota_init(struct gfs2_sbd *sdp);
  extern void gfs2_quota_cleanup(struct gfs2_sbd *sdp);
  extern int gfs2_quotad(void *data);

  extern void gfs2_wake_up_statfs(struct gfs2_sbd *sdp);

  static inline int gfs2_quota_lock_check(struct gfs2_inode *ip)
  {
  	struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
  	int ret;
  	if (sdp->sd_args.ar_quota == GFS2_QUOTA_OFF)
  		return 0;
  	ret = gfs2_quota_lock(ip, NO_QUOTA_CHANGE, NO_QUOTA_CHANGE);
  	if (ret)
  		return ret;
  	if (sdp->sd_args.ar_quota != GFS2_QUOTA_ON)
  		return 0;
  	ret = gfs2_quota_check(ip, ip->i_inode.i_uid, ip->i_inode.i_gid);
  	if (ret)
  		gfs2_quota_unlock(ip);
  	return ret;
  }

  extern int gfs2_shrink_qd_memory(struct shrinker *shrink,
  				 struct shrink_control *sc);

  extern const struct quotactl_ops gfs2_quotactl_ops;

  #endif /* __QUOTA_DOT_H__ */