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e7fd4179 DT |
1 | /****************************************************************************** |
2 | ******************************************************************************* | |
3 | ** | |
4 | ** Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved. | |
5 | ** Copyright (C) 2004-2005 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 | ||
e18b890b | 18 | static struct kmem_cache *lkb_cache; |
e7fd4179 DT |
19 | |
20 | ||
21 | int dlm_memory_init(void) | |
22 | { | |
23 | int ret = 0; | |
24 | ||
25 | lkb_cache = kmem_cache_create("dlm_lkb", sizeof(struct dlm_lkb), | |
20c2df83 | 26 | __alignof__(struct dlm_lkb), 0, NULL); |
e7fd4179 DT |
27 | if (!lkb_cache) |
28 | ret = -ENOMEM; | |
29 | return ret; | |
30 | } | |
31 | ||
32 | void dlm_memory_exit(void) | |
33 | { | |
34 | if (lkb_cache) | |
35 | kmem_cache_destroy(lkb_cache); | |
36 | } | |
37 | ||
38 | char *allocate_lvb(struct dlm_ls *ls) | |
39 | { | |
40 | char *p; | |
41 | ||
dd00cc48 | 42 | p = kzalloc(ls->ls_lvblen, GFP_KERNEL); |
e7fd4179 DT |
43 | return p; |
44 | } | |
45 | ||
46 | void free_lvb(char *p) | |
47 | { | |
48 | kfree(p); | |
49 | } | |
50 | ||
e7fd4179 DT |
51 | /* FIXME: have some minimal space built-in to rsb for the name and |
52 | kmalloc a separate name if needed, like dentries are done */ | |
53 | ||
54 | struct dlm_rsb *allocate_rsb(struct dlm_ls *ls, int namelen) | |
55 | { | |
56 | struct dlm_rsb *r; | |
57 | ||
58 | DLM_ASSERT(namelen <= DLM_RESNAME_MAXLEN,); | |
59 | ||
dd00cc48 | 60 | r = kzalloc(sizeof(*r) + namelen, GFP_KERNEL); |
e7fd4179 DT |
61 | return r; |
62 | } | |
63 | ||
64 | void free_rsb(struct dlm_rsb *r) | |
65 | { | |
66 | if (r->res_lvbptr) | |
67 | free_lvb(r->res_lvbptr); | |
68 | kfree(r); | |
69 | } | |
70 | ||
71 | struct dlm_lkb *allocate_lkb(struct dlm_ls *ls) | |
72 | { | |
73 | struct dlm_lkb *lkb; | |
74 | ||
c3762229 | 75 | lkb = kmem_cache_zalloc(lkb_cache, GFP_KERNEL); |
e7fd4179 DT |
76 | return lkb; |
77 | } | |
78 | ||
79 | void free_lkb(struct dlm_lkb *lkb) | |
80 | { | |
597d0cae DT |
81 | if (lkb->lkb_flags & DLM_IFL_USER) { |
82 | struct dlm_user_args *ua; | |
83 | ua = (struct dlm_user_args *)lkb->lkb_astparam; | |
84 | if (ua) { | |
85 | if (ua->lksb.sb_lvbptr) | |
86 | kfree(ua->lksb.sb_lvbptr); | |
87 | kfree(ua); | |
88 | } | |
89 | } | |
e7fd4179 DT |
90 | kmem_cache_free(lkb_cache, lkb); |
91 | } | |
92 | ||
93 | struct dlm_direntry *allocate_direntry(struct dlm_ls *ls, int namelen) | |
94 | { | |
95 | struct dlm_direntry *de; | |
96 | ||
5ff51911 DT |
97 | DLM_ASSERT(namelen <= DLM_RESNAME_MAXLEN, |
98 | printk("namelen = %d\n", namelen);); | |
e7fd4179 | 99 | |
dd00cc48 | 100 | de = kzalloc(sizeof(*de) + namelen, GFP_KERNEL); |
e7fd4179 DT |
101 | return de; |
102 | } | |
103 | ||
104 | void free_direntry(struct dlm_direntry *de) | |
105 | { | |
106 | kfree(de); | |
107 | } | |
108 |