Linux kernel mirror (for testing)
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linux
1// SPDX-License-Identifier: GPL-2.0-only
2/******************************************************************************
3*******************************************************************************
4**
5** Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
6** Copyright (C) 2004-2007 Red Hat, Inc. All rights reserved.
7**
8**
9*******************************************************************************
10******************************************************************************/
11
12#include "dlm_internal.h"
13#include "config.h"
14#include "memory.h"
15
16static struct kmem_cache *lkb_cache;
17static struct kmem_cache *rsb_cache;
18
19
20int __init dlm_memory_init(void)
21{
22 lkb_cache = kmem_cache_create("dlm_lkb", sizeof(struct dlm_lkb),
23 __alignof__(struct dlm_lkb), 0, NULL);
24 if (!lkb_cache)
25 return -ENOMEM;
26
27 rsb_cache = kmem_cache_create("dlm_rsb", sizeof(struct dlm_rsb),
28 __alignof__(struct dlm_rsb), 0, NULL);
29 if (!rsb_cache) {
30 kmem_cache_destroy(lkb_cache);
31 return -ENOMEM;
32 }
33
34 return 0;
35}
36
37void dlm_memory_exit(void)
38{
39 kmem_cache_destroy(lkb_cache);
40 kmem_cache_destroy(rsb_cache);
41}
42
43char *dlm_allocate_lvb(struct dlm_ls *ls)
44{
45 char *p;
46
47 p = kzalloc(ls->ls_lvblen, GFP_NOFS);
48 return p;
49}
50
51void dlm_free_lvb(char *p)
52{
53 kfree(p);
54}
55
56struct dlm_rsb *dlm_allocate_rsb(struct dlm_ls *ls)
57{
58 struct dlm_rsb *r;
59
60 r = kmem_cache_zalloc(rsb_cache, GFP_NOFS);
61 return r;
62}
63
64void dlm_free_rsb(struct dlm_rsb *r)
65{
66 if (r->res_lvbptr)
67 dlm_free_lvb(r->res_lvbptr);
68 kmem_cache_free(rsb_cache, r);
69}
70
71struct dlm_lkb *dlm_allocate_lkb(struct dlm_ls *ls)
72{
73 struct dlm_lkb *lkb;
74
75 lkb = kmem_cache_zalloc(lkb_cache, GFP_NOFS);
76 return lkb;
77}
78
79void dlm_free_lkb(struct dlm_lkb *lkb)
80{
81 if (lkb->lkb_flags & DLM_IFL_USER) {
82 struct dlm_user_args *ua;
83 ua = lkb->lkb_ua;
84 if (ua) {
85 kfree(ua->lksb.sb_lvbptr);
86 kfree(ua);
87 }
88 }
89 kmem_cache_free(lkb_cache, lkb);
90}
91