117 lines
2.5 KiB
C
117 lines
2.5 KiB
C
/******************************************************************************
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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) 2004-2005 Red Hat, Inc. All rights reserved.
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**
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** This copyrighted material is made available to anyone wishing to use,
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** modify, copy, or redistribute it subject to the terms and conditions
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** of the GNU General Public License v.2.
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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 "config.h"
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#include "memory.h"
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static kmem_cache_t *lkb_cache;
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int dlm_memory_init(void)
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{
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int ret = 0;
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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, NULL);
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if (!lkb_cache)
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ret = -ENOMEM;
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return ret;
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}
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void dlm_memory_exit(void)
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{
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if (lkb_cache)
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kmem_cache_destroy(lkb_cache);
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}
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char *allocate_lvb(struct dlm_ls *ls)
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{
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char *p;
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p = kmalloc(ls->ls_lvblen, GFP_KERNEL);
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if (p)
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memset(p, 0, ls->ls_lvblen);
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return p;
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}
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void free_lvb(char *p)
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{
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kfree(p);
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}
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/* FIXME: have some minimal space built-in to rsb for the name and
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kmalloc a separate name if needed, like dentries are done */
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struct dlm_rsb *allocate_rsb(struct dlm_ls *ls, int namelen)
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{
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struct dlm_rsb *r;
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DLM_ASSERT(namelen <= DLM_RESNAME_MAXLEN,);
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r = kmalloc(sizeof(*r) + namelen, GFP_KERNEL);
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if (r)
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memset(r, 0, sizeof(*r) + namelen);
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return r;
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}
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void free_rsb(struct dlm_rsb *r)
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{
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if (r->res_lvbptr)
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free_lvb(r->res_lvbptr);
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kfree(r);
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}
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struct dlm_lkb *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_alloc(lkb_cache, GFP_KERNEL);
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if (lkb)
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memset(lkb, 0, sizeof(*lkb));
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return lkb;
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}
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void free_lkb(struct dlm_lkb *lkb)
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{
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if (lkb->lkb_flags & DLM_IFL_USER) {
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struct dlm_user_args *ua;
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ua = (struct dlm_user_args *)lkb->lkb_astparam;
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if (ua) {
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if (ua->lksb.sb_lvbptr)
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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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kmem_cache_free(lkb_cache, lkb);
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}
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struct dlm_direntry *allocate_direntry(struct dlm_ls *ls, int namelen)
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{
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struct dlm_direntry *de;
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DLM_ASSERT(namelen <= DLM_RESNAME_MAXLEN,
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printk("namelen = %d\n", namelen););
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de = kmalloc(sizeof(*de) + namelen, GFP_KERNEL);
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if (de)
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memset(de, 0, sizeof(*de) + namelen);
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return de;
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}
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void free_direntry(struct dlm_direntry *de)
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{
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kfree(de);
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}
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