Loading...
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
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 "midcomms.h"
14#include "lowcomms.h"
15#include "config.h"
16#include "memory.h"
17#include "ast.h"
18
19static struct kmem_cache *writequeue_cache;
20static struct kmem_cache *mhandle_cache;
21static struct kmem_cache *msg_cache;
22static struct kmem_cache *lkb_cache;
23static struct kmem_cache *rsb_cache;
24static struct kmem_cache *cb_cache;
25
26
27int __init dlm_memory_init(void)
28{
29 writequeue_cache = dlm_lowcomms_writequeue_cache_create();
30 if (!writequeue_cache)
31 goto out;
32
33 mhandle_cache = dlm_midcomms_cache_create();
34 if (!mhandle_cache)
35 goto mhandle;
36
37 lkb_cache = kmem_cache_create("dlm_lkb", sizeof(struct dlm_lkb),
38 __alignof__(struct dlm_lkb), 0, NULL);
39 if (!lkb_cache)
40 goto lkb;
41
42 msg_cache = dlm_lowcomms_msg_cache_create();
43 if (!msg_cache)
44 goto msg;
45
46 rsb_cache = kmem_cache_create("dlm_rsb", sizeof(struct dlm_rsb),
47 __alignof__(struct dlm_rsb), 0, NULL);
48 if (!rsb_cache)
49 goto rsb;
50
51 cb_cache = kmem_cache_create("dlm_cb", sizeof(struct dlm_callback),
52 __alignof__(struct dlm_callback), 0,
53 NULL);
54 if (!rsb_cache)
55 goto cb;
56
57 return 0;
58
59cb:
60 kmem_cache_destroy(rsb_cache);
61rsb:
62 kmem_cache_destroy(msg_cache);
63msg:
64 kmem_cache_destroy(lkb_cache);
65lkb:
66 kmem_cache_destroy(mhandle_cache);
67mhandle:
68 kmem_cache_destroy(writequeue_cache);
69out:
70 return -ENOMEM;
71}
72
73void dlm_memory_exit(void)
74{
75 kmem_cache_destroy(writequeue_cache);
76 kmem_cache_destroy(mhandle_cache);
77 kmem_cache_destroy(msg_cache);
78 kmem_cache_destroy(lkb_cache);
79 kmem_cache_destroy(rsb_cache);
80 kmem_cache_destroy(cb_cache);
81}
82
83char *dlm_allocate_lvb(struct dlm_ls *ls)
84{
85 char *p;
86
87 p = kzalloc(ls->ls_lvblen, GFP_NOFS);
88 return p;
89}
90
91void dlm_free_lvb(char *p)
92{
93 kfree(p);
94}
95
96struct dlm_rsb *dlm_allocate_rsb(struct dlm_ls *ls)
97{
98 struct dlm_rsb *r;
99
100 r = kmem_cache_zalloc(rsb_cache, GFP_NOFS);
101 return r;
102}
103
104void dlm_free_rsb(struct dlm_rsb *r)
105{
106 if (r->res_lvbptr)
107 dlm_free_lvb(r->res_lvbptr);
108 kmem_cache_free(rsb_cache, r);
109}
110
111struct dlm_lkb *dlm_allocate_lkb(struct dlm_ls *ls)
112{
113 struct dlm_lkb *lkb;
114
115 lkb = kmem_cache_zalloc(lkb_cache, GFP_NOFS);
116 return lkb;
117}
118
119void dlm_free_lkb(struct dlm_lkb *lkb)
120{
121 if (lkb->lkb_flags & DLM_IFL_USER) {
122 struct dlm_user_args *ua;
123 ua = lkb->lkb_ua;
124 if (ua) {
125 kfree(ua->lksb.sb_lvbptr);
126 kfree(ua);
127 }
128 }
129
130 /* drop references if they are set */
131 dlm_callback_set_last_ptr(&lkb->lkb_last_cast, NULL);
132 dlm_callback_set_last_ptr(&lkb->lkb_last_cb, NULL);
133
134 kmem_cache_free(lkb_cache, lkb);
135}
136
137struct dlm_mhandle *dlm_allocate_mhandle(gfp_t allocation)
138{
139 return kmem_cache_alloc(mhandle_cache, allocation);
140}
141
142void dlm_free_mhandle(struct dlm_mhandle *mhandle)
143{
144 kmem_cache_free(mhandle_cache, mhandle);
145}
146
147struct writequeue_entry *dlm_allocate_writequeue(void)
148{
149 return kmem_cache_alloc(writequeue_cache, GFP_ATOMIC);
150}
151
152void dlm_free_writequeue(struct writequeue_entry *writequeue)
153{
154 kmem_cache_free(writequeue_cache, writequeue);
155}
156
157struct dlm_msg *dlm_allocate_msg(gfp_t allocation)
158{
159 return kmem_cache_alloc(msg_cache, allocation);
160}
161
162void dlm_free_msg(struct dlm_msg *msg)
163{
164 kmem_cache_free(msg_cache, msg);
165}
166
167struct dlm_callback *dlm_allocate_cb(void)
168{
169 return kmem_cache_alloc(cb_cache, GFP_ATOMIC);
170}
171
172void dlm_free_cb(struct dlm_callback *cb)
173{
174 kmem_cache_free(cb_cache, cb);
175}