blob: f7783867491aedf9678f6c506d49bf636ddb68e0 [file] [log] [blame]
David Teiglande7fd4172006-01-18 09:30:29 +00001/******************************************************************************
2*******************************************************************************
3**
4** Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
David Teigland52bda2b2007-11-07 09:06:49 -06005** Copyright (C) 2004-2007 Red Hat, Inc. All rights reserved.
David Teiglande7fd4172006-01-18 09:30:29 +00006**
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
Christoph Lametere18b8902006-12-06 20:33:20 -080018static struct kmem_cache *lkb_cache;
David Teiglande7fd4172006-01-18 09:30:29 +000019
20
21int dlm_memory_init(void)
22{
23 int ret = 0;
24
25 lkb_cache = kmem_cache_create("dlm_lkb", sizeof(struct dlm_lkb),
Paul Mundt20c2df82007-07-20 10:11:58 +090026 __alignof__(struct dlm_lkb), 0, NULL);
David Teiglande7fd4172006-01-18 09:30:29 +000027 if (!lkb_cache)
28 ret = -ENOMEM;
29 return ret;
30}
31
32void dlm_memory_exit(void)
33{
34 if (lkb_cache)
35 kmem_cache_destroy(lkb_cache);
36}
37
David Teigland52bda2b2007-11-07 09:06:49 -060038char *dlm_allocate_lvb(struct dlm_ls *ls)
David Teiglande7fd4172006-01-18 09:30:29 +000039{
40 char *p;
41
Yoann Padioleaudd00cc42007-07-19 01:49:03 -070042 p = kzalloc(ls->ls_lvblen, GFP_KERNEL);
David Teiglande7fd4172006-01-18 09:30:29 +000043 return p;
44}
45
David Teigland52bda2b2007-11-07 09:06:49 -060046void dlm_free_lvb(char *p)
David Teiglande7fd4172006-01-18 09:30:29 +000047{
48 kfree(p);
49}
50
David Teiglande7fd4172006-01-18 09:30:29 +000051/* 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
David Teigland52bda2b2007-11-07 09:06:49 -060054struct dlm_rsb *dlm_allocate_rsb(struct dlm_ls *ls, int namelen)
David Teiglande7fd4172006-01-18 09:30:29 +000055{
56 struct dlm_rsb *r;
57
58 DLM_ASSERT(namelen <= DLM_RESNAME_MAXLEN,);
59
Yoann Padioleaudd00cc42007-07-19 01:49:03 -070060 r = kzalloc(sizeof(*r) + namelen, GFP_KERNEL);
David Teiglande7fd4172006-01-18 09:30:29 +000061 return r;
62}
63
David Teigland52bda2b2007-11-07 09:06:49 -060064void dlm_free_rsb(struct dlm_rsb *r)
David Teiglande7fd4172006-01-18 09:30:29 +000065{
66 if (r->res_lvbptr)
David Teigland52bda2b2007-11-07 09:06:49 -060067 dlm_free_lvb(r->res_lvbptr);
David Teiglande7fd4172006-01-18 09:30:29 +000068 kfree(r);
69}
70
David Teigland52bda2b2007-11-07 09:06:49 -060071struct dlm_lkb *dlm_allocate_lkb(struct dlm_ls *ls)
David Teiglande7fd4172006-01-18 09:30:29 +000072{
73 struct dlm_lkb *lkb;
74
Robert P. J. Dayc3762222007-02-10 01:45:03 -080075 lkb = kmem_cache_zalloc(lkb_cache, GFP_KERNEL);
David Teiglande7fd4172006-01-18 09:30:29 +000076 return lkb;
77}
78
David Teigland52bda2b2007-11-07 09:06:49 -060079void dlm_free_lkb(struct dlm_lkb *lkb)
David Teiglande7fd4172006-01-18 09:30:29 +000080{
David Teigland597d0ca2006-07-12 16:44:04 -050081 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 }
David Teiglande7fd4172006-01-18 09:30:29 +000090 kmem_cache_free(lkb_cache, lkb);
91}
92