1 // SPDX-License-Identifier: GPL-2.0-only 2 /****************************************************************************** 3 ******************************************************************************* 4 ** 5 ** Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved. 6 ** Copyright (C) 2004-2007 Red Hat, Inc. All rights reserved. 7 ** 8 ** 9 ******************************************************************************* 10 ******************************************************************************/ 11 12 #include "dlm_internal.h" 13 #include "config.h" 14 #include "memory.h" 15 16 static struct kmem_cache *lkb_cache; 17 static struct kmem_cache *rsb_cache; 18 19 20 int __init dlm_memory_init(void) 21 { 22 lkb_cache = kmem_cache_create("dlm_lkb", sizeof(struct dlm_lkb), 23 __alignof__(struct dlm_lkb), 0, NULL); 24 if (!lkb_cache) 25 return -ENOMEM; 26 27 rsb_cache = kmem_cache_create("dlm_rsb", sizeof(struct dlm_rsb), 28 __alignof__(struct dlm_rsb), 0, NULL); 29 if (!rsb_cache) { 30 kmem_cache_destroy(lkb_cache); 31 return -ENOMEM; 32 } 33 34 return 0; 35 } 36 37 void dlm_memory_exit(void) 38 { 39 kmem_cache_destroy(lkb_cache); 40 kmem_cache_destroy(rsb_cache); 41 } 42 43 char *dlm_allocate_lvb(struct dlm_ls *ls) 44 { 45 char *p; 46 47 p = kzalloc(ls->ls_lvblen, GFP_NOFS); 48 return p; 49 } 50 51 void dlm_free_lvb(char *p) 52 { 53 kfree(p); 54 } 55 56 struct dlm_rsb *dlm_allocate_rsb(struct dlm_ls *ls) 57 { 58 struct dlm_rsb *r; 59 60 r = kmem_cache_zalloc(rsb_cache, GFP_NOFS); 61 return r; 62 } 63 64 void dlm_free_rsb(struct dlm_rsb *r) 65 { 66 if (r->res_lvbptr) 67 dlm_free_lvb(r->res_lvbptr); 68 kmem_cache_free(rsb_cache, r); 69 } 70 71 struct dlm_lkb *dlm_allocate_lkb(struct dlm_ls *ls) 72 { 73 struct dlm_lkb *lkb; 74 75 lkb = kmem_cache_zalloc(lkb_cache, GFP_NOFS); 76 return lkb; 77 } 78 79 void dlm_free_lkb(struct dlm_lkb *lkb) 80 { 81 if (lkb->lkb_flags & DLM_IFL_USER) { 82 struct dlm_user_args *ua; 83 ua = lkb->lkb_ua; 84 if (ua) { 85 kfree(ua->lksb.sb_lvbptr); 86 kfree(ua); 87 } 88 } 89 kmem_cache_free(lkb_cache, lkb); 90 } 91 92