1/******************************************************************************
2*******************************************************************************
3**
4**  Copyright (C) Sistina Software, Inc.  1997-2003  All rights reserved.
5**  Copyright (C) 2004-2007 Red Hat, Inc.  All rights reserved.
6**
7**  This copyrighted material is made available to anyone wishing to use,
8**  modify, copy, or redistribute it subject to the terms and conditions
9**  of the GNU General Public License v.2.
10**
11*******************************************************************************
12******************************************************************************/
13
14#include "dlm_internal.h"
15#include "config.h"
16#include "memory.h"
17
18static struct kmem_cache *lkb_cache;
19
20
21int __init dlm_memory_init(void)
22{
23	int ret = 0;
24
25	lkb_cache = kmem_cache_create("dlm_lkb", sizeof(struct dlm_lkb),
26				__alignof__(struct dlm_lkb), 0, NULL);
27	if (!lkb_cache)
28		ret = -ENOMEM;
29	return ret;
30}
31
32void dlm_memory_exit(void)
33{
34	if (lkb_cache)
35		kmem_cache_destroy(lkb_cache);
36}
37
38char *dlm_allocate_lvb(struct dlm_ls *ls)
39{
40	char *p;
41
42	p = kzalloc(ls->ls_lvblen, GFP_NOFS);
43	return p;
44}
45
46void dlm_free_lvb(char *p)
47{
48	kfree(p);
49}
50
51
52struct dlm_rsb *dlm_allocate_rsb(struct dlm_ls *ls, int namelen)
53{
54	struct dlm_rsb *r;
55
56	DLM_ASSERT(namelen <= DLM_RESNAME_MAXLEN,);
57
58	r = kzalloc(sizeof(*r) + namelen, GFP_NOFS);
59	return r;
60}
61
62void dlm_free_rsb(struct dlm_rsb *r)
63{
64	if (r->res_lvbptr)
65		dlm_free_lvb(r->res_lvbptr);
66	kfree(r);
67}
68
69struct dlm_lkb *dlm_allocate_lkb(struct dlm_ls *ls)
70{
71	struct dlm_lkb *lkb;
72
73	lkb = kmem_cache_zalloc(lkb_cache, GFP_NOFS);
74	return lkb;
75}
76
77void dlm_free_lkb(struct dlm_lkb *lkb)
78{
79	if (lkb->lkb_flags & DLM_IFL_USER) {
80		struct dlm_user_args *ua;
81		ua = lkb->lkb_ua;
82		if (ua) {
83			if (ua->lksb.sb_lvbptr)
84				kfree(ua->lksb.sb_lvbptr);
85			kfree(ua);
86		}
87	}
88	kmem_cache_free(lkb_cache, lkb);
89}
90