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
16 static struct kmem_cache *lkb_cache;
17 static struct kmem_cache *rsb_cache;
18
19
dlm_memory_init(void)20 int __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
dlm_memory_exit(void)37 void dlm_memory_exit(void)
38 {
39 kmem_cache_destroy(lkb_cache);
40 kmem_cache_destroy(rsb_cache);
41 }
42
dlm_allocate_lvb(struct dlm_ls * ls)43 char *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
dlm_free_lvb(char * p)51 void dlm_free_lvb(char *p)
52 {
53 kfree(p);
54 }
55
dlm_allocate_rsb(struct dlm_ls * ls)56 struct 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
dlm_free_rsb(struct dlm_rsb * r)64 void 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
dlm_allocate_lkb(struct dlm_ls * ls)71 struct 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
dlm_free_lkb(struct dlm_lkb * lkb)79 void 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
92