]>
Commit | Line | Data |
---|---|---|
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 | ||
18 | static kmem_cache_t *lkb_cache; | |
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), | |
26 | __alignof__(struct dlm_lkb), 0, NULL, NULL); | |
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 | ||
42 | p = kmalloc(ls->ls_lvblen, GFP_KERNEL); | |
43 | if (p) | |
44 | memset(p, 0, ls->ls_lvblen); | |
45 | return p; | |
46 | } | |
47 | ||
48 | void free_lvb(char *p) | |
49 | { | |
50 | kfree(p); | |
51 | } | |
52 | ||
e7fd4179 DT |
53 | /* FIXME: have some minimal space built-in to rsb for the name and |
54 | kmalloc a separate name if needed, like dentries are done */ | |
55 | ||
56 | struct dlm_rsb *allocate_rsb(struct dlm_ls *ls, int namelen) | |
57 | { | |
58 | struct dlm_rsb *r; | |
59 | ||
60 | DLM_ASSERT(namelen <= DLM_RESNAME_MAXLEN,); | |
61 | ||
62 | r = kmalloc(sizeof(*r) + namelen, GFP_KERNEL); | |
63 | if (r) | |
64 | memset(r, 0, sizeof(*r) + namelen); | |
65 | return r; | |
66 | } | |
67 | ||
68 | void free_rsb(struct dlm_rsb *r) | |
69 | { | |
70 | if (r->res_lvbptr) | |
71 | free_lvb(r->res_lvbptr); | |
72 | kfree(r); | |
73 | } | |
74 | ||
75 | struct dlm_lkb *allocate_lkb(struct dlm_ls *ls) | |
76 | { | |
77 | struct dlm_lkb *lkb; | |
78 | ||
79 | lkb = kmem_cache_alloc(lkb_cache, GFP_KERNEL); | |
80 | if (lkb) | |
81 | memset(lkb, 0, sizeof(*lkb)); | |
82 | return lkb; | |
83 | } | |
84 | ||
85 | void free_lkb(struct dlm_lkb *lkb) | |
86 | { | |
87 | kmem_cache_free(lkb_cache, lkb); | |
88 | } | |
89 | ||
90 | struct dlm_direntry *allocate_direntry(struct dlm_ls *ls, int namelen) | |
91 | { | |
92 | struct dlm_direntry *de; | |
93 | ||
94 | DLM_ASSERT(namelen <= DLM_RESNAME_MAXLEN,); | |
95 | ||
96 | de = kmalloc(sizeof(*de) + namelen, GFP_KERNEL); | |
97 | if (de) | |
98 | memset(de, 0, sizeof(*de) + namelen); | |
99 | return de; | |
100 | } | |
101 | ||
102 | void free_direntry(struct dlm_direntry *de) | |
103 | { | |
104 | kfree(de); | |
105 | } | |
106 |