176 lines
3.7 KiB
C
176 lines
3.7 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/******************************************************************************
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*******************************************************************************
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**
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** Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
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** Copyright (C) 2004-2007 Red Hat, Inc. All rights reserved.
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**
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**
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*******************************************************************************
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******************************************************************************/
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#include "dlm_internal.h"
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#include "midcomms.h"
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#include "lowcomms.h"
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#include "config.h"
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#include "memory.h"
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#include "ast.h"
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static struct kmem_cache *writequeue_cache;
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static struct kmem_cache *mhandle_cache;
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static struct kmem_cache *msg_cache;
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static struct kmem_cache *lkb_cache;
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static struct kmem_cache *rsb_cache;
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static struct kmem_cache *cb_cache;
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int __init dlm_memory_init(void)
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{
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writequeue_cache = dlm_lowcomms_writequeue_cache_create();
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if (!writequeue_cache)
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goto out;
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mhandle_cache = dlm_midcomms_cache_create();
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if (!mhandle_cache)
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goto mhandle;
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lkb_cache = kmem_cache_create("dlm_lkb", sizeof(struct dlm_lkb),
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__alignof__(struct dlm_lkb), 0, NULL);
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if (!lkb_cache)
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goto lkb;
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msg_cache = dlm_lowcomms_msg_cache_create();
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if (!msg_cache)
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goto msg;
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rsb_cache = kmem_cache_create("dlm_rsb", sizeof(struct dlm_rsb),
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__alignof__(struct dlm_rsb), 0, NULL);
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if (!rsb_cache)
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goto rsb;
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cb_cache = kmem_cache_create("dlm_cb", sizeof(struct dlm_callback),
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__alignof__(struct dlm_callback), 0,
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NULL);
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if (!cb_cache)
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goto cb;
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return 0;
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cb:
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kmem_cache_destroy(rsb_cache);
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rsb:
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kmem_cache_destroy(msg_cache);
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msg:
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kmem_cache_destroy(lkb_cache);
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lkb:
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kmem_cache_destroy(mhandle_cache);
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mhandle:
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kmem_cache_destroy(writequeue_cache);
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out:
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return -ENOMEM;
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}
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void dlm_memory_exit(void)
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{
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kmem_cache_destroy(writequeue_cache);
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kmem_cache_destroy(mhandle_cache);
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kmem_cache_destroy(msg_cache);
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kmem_cache_destroy(lkb_cache);
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kmem_cache_destroy(rsb_cache);
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kmem_cache_destroy(cb_cache);
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}
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char *dlm_allocate_lvb(struct dlm_ls *ls)
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{
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char *p;
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p = kzalloc(ls->ls_lvblen, GFP_NOFS);
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return p;
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}
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void dlm_free_lvb(char *p)
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{
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kfree(p);
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}
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struct dlm_rsb *dlm_allocate_rsb(struct dlm_ls *ls)
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{
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struct dlm_rsb *r;
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r = kmem_cache_zalloc(rsb_cache, GFP_NOFS);
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return r;
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}
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void dlm_free_rsb(struct dlm_rsb *r)
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{
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if (r->res_lvbptr)
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dlm_free_lvb(r->res_lvbptr);
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kmem_cache_free(rsb_cache, r);
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}
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struct dlm_lkb *dlm_allocate_lkb(struct dlm_ls *ls)
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{
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struct dlm_lkb *lkb;
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lkb = kmem_cache_zalloc(lkb_cache, GFP_NOFS);
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return lkb;
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}
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void dlm_free_lkb(struct dlm_lkb *lkb)
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{
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if (test_bit(DLM_DFL_USER_BIT, &lkb->lkb_dflags)) {
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struct dlm_user_args *ua;
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ua = lkb->lkb_ua;
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if (ua) {
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kfree(ua->lksb.sb_lvbptr);
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kfree(ua);
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}
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}
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/* drop references if they are set */
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dlm_callback_set_last_ptr(&lkb->lkb_last_cast, NULL);
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dlm_callback_set_last_ptr(&lkb->lkb_last_cb, NULL);
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kmem_cache_free(lkb_cache, lkb);
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}
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struct dlm_mhandle *dlm_allocate_mhandle(gfp_t allocation)
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{
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return kmem_cache_alloc(mhandle_cache, allocation);
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}
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void dlm_free_mhandle(struct dlm_mhandle *mhandle)
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{
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kmem_cache_free(mhandle_cache, mhandle);
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}
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struct writequeue_entry *dlm_allocate_writequeue(void)
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{
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return kmem_cache_alloc(writequeue_cache, GFP_ATOMIC);
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}
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void dlm_free_writequeue(struct writequeue_entry *writequeue)
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{
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kmem_cache_free(writequeue_cache, writequeue);
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}
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struct dlm_msg *dlm_allocate_msg(gfp_t allocation)
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{
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return kmem_cache_alloc(msg_cache, allocation);
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}
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void dlm_free_msg(struct dlm_msg *msg)
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{
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kmem_cache_free(msg_cache, msg);
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}
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struct dlm_callback *dlm_allocate_cb(void)
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{
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return kmem_cache_alloc(cb_cache, GFP_ATOMIC);
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}
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void dlm_free_cb(struct dlm_callback *cb)
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{
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kmem_cache_free(cb_cache, cb);
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}
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