1/****************************************************************************** 2******************************************************************************* 3** 4** Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved. 5** Copyright (C) 2004-2007 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 18static struct kmem_cache *lkb_cache; 19 20 21int __init 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); 27 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 38char *dlm_allocate_lvb(struct dlm_ls *ls) 39{ 40 char *p; 41 42 p = kzalloc(ls->ls_lvblen, GFP_NOFS); 43 return p; 44} 45 46void dlm_free_lvb(char *p) 47{ 48 kfree(p); 49} 50 51 52struct dlm_rsb *dlm_allocate_rsb(struct dlm_ls *ls, int namelen) 53{ 54 struct dlm_rsb *r; 55 56 DLM_ASSERT(namelen <= DLM_RESNAME_MAXLEN,); 57 58 r = kzalloc(sizeof(*r) + namelen, GFP_NOFS); 59 return r; 60} 61 62void dlm_free_rsb(struct dlm_rsb *r) 63{ 64 if (r->res_lvbptr) 65 dlm_free_lvb(r->res_lvbptr); 66 kfree(r); 67} 68 69struct dlm_lkb *dlm_allocate_lkb(struct dlm_ls *ls) 70{ 71 struct dlm_lkb *lkb; 72 73 lkb = kmem_cache_zalloc(lkb_cache, GFP_NOFS); 74 return lkb; 75} 76 77void dlm_free_lkb(struct dlm_lkb *lkb) 78{ 79 if (lkb->lkb_flags & DLM_IFL_USER) { 80 struct dlm_user_args *ua; 81 ua = lkb->lkb_ua; 82 if (ua) { 83 if (ua->lksb.sb_lvbptr) 84 kfree(ua->lksb.sb_lvbptr); 85 kfree(ua); 86 } 87 } 88 kmem_cache_free(lkb_cache, lkb); 89} 90