David Teigland | e7fd417 | 2006-01-18 09:30:29 +0000 | [diff] [blame] | 1 | /****************************************************************************** |
| 2 | ******************************************************************************* |
| 3 | ** |
| 4 | ** Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved. |
David Teigland | 52bda2b | 2007-11-07 09:06:49 -0600 | [diff] [blame] | 5 | ** Copyright (C) 2004-2007 Red Hat, Inc. All rights reserved. |
David Teigland | e7fd417 | 2006-01-18 09:30:29 +0000 | [diff] [blame] | 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 | |
Christoph Lameter | e18b890 | 2006-12-06 20:33:20 -0800 | [diff] [blame] | 18 | static struct kmem_cache *lkb_cache; |
David Teigland | e7fd417 | 2006-01-18 09:30:29 +0000 | [diff] [blame] | 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), |
Paul Mundt | 20c2df8 | 2007-07-20 10:11:58 +0900 | [diff] [blame] | 26 | __alignof__(struct dlm_lkb), 0, NULL); |
David Teigland | e7fd417 | 2006-01-18 09:30:29 +0000 | [diff] [blame] | 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 | |
David Teigland | 52bda2b | 2007-11-07 09:06:49 -0600 | [diff] [blame] | 38 | char *dlm_allocate_lvb(struct dlm_ls *ls) |
David Teigland | e7fd417 | 2006-01-18 09:30:29 +0000 | [diff] [blame] | 39 | { |
| 40 | char *p; |
| 41 | |
Yoann Padioleau | dd00cc4 | 2007-07-19 01:49:03 -0700 | [diff] [blame] | 42 | p = kzalloc(ls->ls_lvblen, GFP_KERNEL); |
David Teigland | e7fd417 | 2006-01-18 09:30:29 +0000 | [diff] [blame] | 43 | return p; |
| 44 | } |
| 45 | |
David Teigland | 52bda2b | 2007-11-07 09:06:49 -0600 | [diff] [blame] | 46 | void dlm_free_lvb(char *p) |
David Teigland | e7fd417 | 2006-01-18 09:30:29 +0000 | [diff] [blame] | 47 | { |
| 48 | kfree(p); |
| 49 | } |
| 50 | |
David Teigland | e7fd417 | 2006-01-18 09:30:29 +0000 | [diff] [blame] | 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 | |
David Teigland | 52bda2b | 2007-11-07 09:06:49 -0600 | [diff] [blame] | 54 | struct dlm_rsb *dlm_allocate_rsb(struct dlm_ls *ls, int namelen) |
David Teigland | e7fd417 | 2006-01-18 09:30:29 +0000 | [diff] [blame] | 55 | { |
| 56 | struct dlm_rsb *r; |
| 57 | |
| 58 | DLM_ASSERT(namelen <= DLM_RESNAME_MAXLEN,); |
| 59 | |
Yoann Padioleau | dd00cc4 | 2007-07-19 01:49:03 -0700 | [diff] [blame] | 60 | r = kzalloc(sizeof(*r) + namelen, GFP_KERNEL); |
David Teigland | e7fd417 | 2006-01-18 09:30:29 +0000 | [diff] [blame] | 61 | return r; |
| 62 | } |
| 63 | |
David Teigland | 52bda2b | 2007-11-07 09:06:49 -0600 | [diff] [blame] | 64 | void dlm_free_rsb(struct dlm_rsb *r) |
David Teigland | e7fd417 | 2006-01-18 09:30:29 +0000 | [diff] [blame] | 65 | { |
| 66 | if (r->res_lvbptr) |
David Teigland | 52bda2b | 2007-11-07 09:06:49 -0600 | [diff] [blame] | 67 | dlm_free_lvb(r->res_lvbptr); |
David Teigland | e7fd417 | 2006-01-18 09:30:29 +0000 | [diff] [blame] | 68 | kfree(r); |
| 69 | } |
| 70 | |
David Teigland | 52bda2b | 2007-11-07 09:06:49 -0600 | [diff] [blame] | 71 | struct dlm_lkb *dlm_allocate_lkb(struct dlm_ls *ls) |
David Teigland | e7fd417 | 2006-01-18 09:30:29 +0000 | [diff] [blame] | 72 | { |
| 73 | struct dlm_lkb *lkb; |
| 74 | |
Robert P. J. Day | c376222 | 2007-02-10 01:45:03 -0800 | [diff] [blame] | 75 | lkb = kmem_cache_zalloc(lkb_cache, GFP_KERNEL); |
David Teigland | e7fd417 | 2006-01-18 09:30:29 +0000 | [diff] [blame] | 76 | return lkb; |
| 77 | } |
| 78 | |
David Teigland | 52bda2b | 2007-11-07 09:06:49 -0600 | [diff] [blame] | 79 | void dlm_free_lkb(struct dlm_lkb *lkb) |
David Teigland | e7fd417 | 2006-01-18 09:30:29 +0000 | [diff] [blame] | 80 | { |
David Teigland | 597d0ca | 2006-07-12 16:44:04 -0500 | [diff] [blame] | 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 | } |
David Teigland | e7fd417 | 2006-01-18 09:30:29 +0000 | [diff] [blame] | 90 | kmem_cache_free(lkb_cache, lkb); |
| 91 | } |
| 92 | |