Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
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linux
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;
19static struct kmem_cache *rsb_cache;
20
21
22int __init dlm_memory_init(void)
23{
24 int ret = 0;
25
26 lkb_cache = kmem_cache_create("dlm_lkb", sizeof(struct dlm_lkb),
27 __alignof__(struct dlm_lkb), 0, NULL);
28 if (!lkb_cache)
29 ret = -ENOMEM;
30
31 rsb_cache = kmem_cache_create("dlm_rsb", sizeof(struct dlm_rsb),
32 __alignof__(struct dlm_rsb), 0, NULL);
33 if (!rsb_cache) {
34 kmem_cache_destroy(lkb_cache);
35 ret = -ENOMEM;
36 }
37
38 return ret;
39}
40
41void dlm_memory_exit(void)
42{
43 if (lkb_cache)
44 kmem_cache_destroy(lkb_cache);
45 if (rsb_cache)
46 kmem_cache_destroy(rsb_cache);
47}
48
49char *dlm_allocate_lvb(struct dlm_ls *ls)
50{
51 char *p;
52
53 p = kzalloc(ls->ls_lvblen, GFP_NOFS);
54 return p;
55}
56
57void dlm_free_lvb(char *p)
58{
59 kfree(p);
60}
61
62struct dlm_rsb *dlm_allocate_rsb(struct dlm_ls *ls)
63{
64 struct dlm_rsb *r;
65
66 r = kmem_cache_zalloc(rsb_cache, GFP_NOFS);
67 return r;
68}
69
70void dlm_free_rsb(struct dlm_rsb *r)
71{
72 if (r->res_lvbptr)
73 dlm_free_lvb(r->res_lvbptr);
74 kmem_cache_free(rsb_cache, r);
75}
76
77struct dlm_lkb *dlm_allocate_lkb(struct dlm_ls *ls)
78{
79 struct dlm_lkb *lkb;
80
81 lkb = kmem_cache_zalloc(lkb_cache, GFP_NOFS);
82 return lkb;
83}
84
85void dlm_free_lkb(struct dlm_lkb *lkb)
86{
87 if (lkb->lkb_flags & DLM_IFL_USER) {
88 struct dlm_user_args *ua;
89 ua = lkb->lkb_ua;
90 if (ua) {
91 if (ua->lksb.sb_lvbptr)
92 kfree(ua->lksb.sb_lvbptr);
93 kfree(ua);
94 }
95 }
96 kmem_cache_free(lkb_cache, lkb);
97}
98