3881ac04eb
By pre-allocating rsb structs before searching the hash table, they can be inserted immediately. This avoids always having to repeat the search when adding the struct to hash list. This also adds space to the rsb struct for a max resource name, so an rsb allocation can be used by any request. The constant size also allows us to finally use a slab for the rsb structs. Signed-off-by: David Teigland <teigland@redhat.com>
99 lines
2.1 KiB
C
99 lines
2.1 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) 2004-2007 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 struct kmem_cache *lkb_cache;
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static struct kmem_cache *rsb_cache;
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int __init 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);
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if (!lkb_cache)
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ret = -ENOMEM;
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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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kmem_cache_destroy(lkb_cache);
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ret = -ENOMEM;
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}
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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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if (rsb_cache)
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kmem_cache_destroy(rsb_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 (lkb->lkb_flags & DLM_IFL_USER) {
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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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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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