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