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 "midcomms.h" 14#include "lowcomms.h" 15#include "config.h" 16#include "memory.h" 17#include "ast.h" 18 19static struct kmem_cache *writequeue_cache; 20static struct kmem_cache *mhandle_cache; 21static struct kmem_cache *msg_cache; 22static struct kmem_cache *lkb_cache; 23static struct kmem_cache *rsb_cache; 24static struct kmem_cache *cb_cache; 25 26 27int __init dlm_memory_init(void) 28{ 29 writequeue_cache = dlm_lowcomms_writequeue_cache_create(); 30 if (!writequeue_cache) 31 goto out; 32 33 mhandle_cache = dlm_midcomms_cache_create(); 34 if (!mhandle_cache) 35 goto mhandle; 36 37 lkb_cache = kmem_cache_create("dlm_lkb", sizeof(struct dlm_lkb), 38 __alignof__(struct dlm_lkb), 0, NULL); 39 if (!lkb_cache) 40 goto lkb; 41 42 msg_cache = dlm_lowcomms_msg_cache_create(); 43 if (!msg_cache) 44 goto msg; 45 46 rsb_cache = kmem_cache_create("dlm_rsb", sizeof(struct dlm_rsb), 47 __alignof__(struct dlm_rsb), 0, NULL); 48 if (!rsb_cache) 49 goto rsb; 50 51 cb_cache = kmem_cache_create("dlm_cb", sizeof(struct dlm_callback), 52 __alignof__(struct dlm_callback), 0, 53 NULL); 54 if (!cb_cache) 55 goto cb; 56 57 return 0; 58 59cb: 60 kmem_cache_destroy(rsb_cache); 61rsb: 62 kmem_cache_destroy(msg_cache); 63msg: 64 kmem_cache_destroy(lkb_cache); 65lkb: 66 kmem_cache_destroy(mhandle_cache); 67mhandle: 68 kmem_cache_destroy(writequeue_cache); 69out: 70 return -ENOMEM; 71} 72 73void dlm_memory_exit(void) 74{ 75 kmem_cache_destroy(writequeue_cache); 76 kmem_cache_destroy(mhandle_cache); 77 kmem_cache_destroy(msg_cache); 78 kmem_cache_destroy(lkb_cache); 79 kmem_cache_destroy(rsb_cache); 80 kmem_cache_destroy(cb_cache); 81} 82 83char *dlm_allocate_lvb(struct dlm_ls *ls) 84{ 85 char *p; 86 87 p = kzalloc(ls->ls_lvblen, GFP_NOFS); 88 return p; 89} 90 91void dlm_free_lvb(char *p) 92{ 93 kfree(p); 94} 95 96struct dlm_rsb *dlm_allocate_rsb(struct dlm_ls *ls) 97{ 98 struct dlm_rsb *r; 99 100 r = kmem_cache_zalloc(rsb_cache, GFP_NOFS); 101 return r; 102} 103 104void dlm_free_rsb(struct dlm_rsb *r) 105{ 106 if (r->res_lvbptr) 107 dlm_free_lvb(r->res_lvbptr); 108 kmem_cache_free(rsb_cache, r); 109} 110 111struct dlm_lkb *dlm_allocate_lkb(struct dlm_ls *ls) 112{ 113 struct dlm_lkb *lkb; 114 115 lkb = kmem_cache_zalloc(lkb_cache, GFP_NOFS); 116 return lkb; 117} 118 119void dlm_free_lkb(struct dlm_lkb *lkb) 120{ 121 if (test_bit(DLM_DFL_USER_BIT, &lkb->lkb_dflags)) { 122 struct dlm_user_args *ua; 123 ua = lkb->lkb_ua; 124 if (ua) { 125 kfree(ua->lksb.sb_lvbptr); 126 kfree(ua); 127 } 128 } 129 130 /* drop references if they are set */ 131 dlm_callback_set_last_ptr(&lkb->lkb_last_cast, NULL); 132 dlm_callback_set_last_ptr(&lkb->lkb_last_cb, NULL); 133 134 kmem_cache_free(lkb_cache, lkb); 135} 136 137struct dlm_mhandle *dlm_allocate_mhandle(gfp_t allocation) 138{ 139 return kmem_cache_alloc(mhandle_cache, allocation); 140} 141 142void dlm_free_mhandle(struct dlm_mhandle *mhandle) 143{ 144 kmem_cache_free(mhandle_cache, mhandle); 145} 146 147struct writequeue_entry *dlm_allocate_writequeue(void) 148{ 149 return kmem_cache_alloc(writequeue_cache, GFP_ATOMIC); 150} 151 152void dlm_free_writequeue(struct writequeue_entry *writequeue) 153{ 154 kmem_cache_free(writequeue_cache, writequeue); 155} 156 157struct dlm_msg *dlm_allocate_msg(gfp_t allocation) 158{ 159 return kmem_cache_alloc(msg_cache, allocation); 160} 161 162void dlm_free_msg(struct dlm_msg *msg) 163{ 164 kmem_cache_free(msg_cache, msg); 165} 166 167struct dlm_callback *dlm_allocate_cb(void) 168{ 169 return kmem_cache_alloc(cb_cache, GFP_ATOMIC); 170} 171 172void dlm_free_cb(struct dlm_callback *cb) 173{ 174 kmem_cache_free(cb_cache, cb); 175} 176