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

  **  Copyright (C) 2004-2007 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 v.2.
  **
  *******************************************************************************
  ******************************************************************************/
  
  #include "dlm_internal.h"
  #include "config.h"
  #include "memory.h"

  static struct kmem_cache *lkb_cache;

  static struct kmem_cache *rsb_cache;

  int __init dlm_memory_init(void)

  {
  	int ret = 0;
  
  	lkb_cache = kmem_cache_create("dlm_lkb", sizeof(struct dlm_lkb),

  				__alignof__(struct dlm_lkb), 0, NULL);

  	if (!lkb_cache)
  		ret = -ENOMEM;

  
  	rsb_cache = kmem_cache_create("dlm_rsb", sizeof(struct dlm_rsb),
  				__alignof__(struct dlm_rsb), 0, NULL);
  	if (!rsb_cache) {
  		kmem_cache_destroy(lkb_cache);
  		ret = -ENOMEM;
  	}

  	return ret;
  }
  
  void dlm_memory_exit(void)
  {
  	if (lkb_cache)
  		kmem_cache_destroy(lkb_cache);

  	if (rsb_cache)
  		kmem_cache_destroy(rsb_cache);

  }

  char *dlm_allocate_lvb(struct dlm_ls *ls)

  {
  	char *p;

  	p = kzalloc(ls->ls_lvblen, GFP_NOFS);

  	return p;
  }

  void dlm_free_lvb(char *p)

  {
  	kfree(p);
  }

  struct dlm_rsb *dlm_allocate_rsb(struct dlm_ls *ls)

  {
  	struct dlm_rsb *r;

  	r = kmem_cache_zalloc(rsb_cache, GFP_NOFS);

  	return r;
  }

  void dlm_free_rsb(struct dlm_rsb *r)

  {
  	if (r->res_lvbptr)

  		dlm_free_lvb(r->res_lvbptr);

  	kmem_cache_free(rsb_cache, r);

  }

  struct dlm_lkb *dlm_allocate_lkb(struct dlm_ls *ls)

  {
  	struct dlm_lkb *lkb;

  	lkb = kmem_cache_zalloc(lkb_cache, GFP_NOFS);

  	return lkb;
  }

  void dlm_free_lkb(struct dlm_lkb *lkb)

  {

  	if (lkb->lkb_flags & DLM_IFL_USER) {
  		struct dlm_user_args *ua;

  		ua = lkb->lkb_ua;

  		if (ua) {
  			if (ua->lksb.sb_lvbptr)
  				kfree(ua->lksb.sb_lvbptr);
  			kfree(ua);
  		}
  	}

  	kmem_cache_free(lkb_cache, lkb);
  }