forked from luck/tmp_suning_uos_patched
f31a896928
kmem_cache_destroy(NULL) is safe, so removes NULL check before freeing the mem. This patch also fix ifnullfree.cocci warnings. Signed-off-by: Wen Yang <wen.yang99@zte.com.cn> Signed-off-by: David Teigland <teigland@redhat.com>
94 lines
2.0 KiB
C
94 lines
2.0 KiB
C
/******************************************************************************
|
|
*******************************************************************************
|
|
**
|
|
** Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
|
|
** Copyright (C) 2004-2007 Red Hat, Inc. All rights reserved.
|
|
**
|
|
** This copyrighted material is made available to anyone wishing to use,
|
|
** modify, copy, or redistribute it subject to the terms and conditions
|
|
** of the GNU General Public License v.2.
|
|
**
|
|
*******************************************************************************
|
|
******************************************************************************/
|
|
|
|
#include "dlm_internal.h"
|
|
#include "config.h"
|
|
#include "memory.h"
|
|
|
|
static struct kmem_cache *lkb_cache;
|
|
static struct kmem_cache *rsb_cache;
|
|
|
|
|
|
int __init dlm_memory_init(void)
|
|
{
|
|
lkb_cache = kmem_cache_create("dlm_lkb", sizeof(struct dlm_lkb),
|
|
__alignof__(struct dlm_lkb), 0, NULL);
|
|
if (!lkb_cache)
|
|
return -ENOMEM;
|
|
|
|
rsb_cache = kmem_cache_create("dlm_rsb", sizeof(struct dlm_rsb),
|
|
__alignof__(struct dlm_rsb), 0, NULL);
|
|
if (!rsb_cache) {
|
|
kmem_cache_destroy(lkb_cache);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
void dlm_memory_exit(void)
|
|
{
|
|
kmem_cache_destroy(lkb_cache);
|
|
kmem_cache_destroy(rsb_cache);
|
|
}
|
|
|
|
char *dlm_allocate_lvb(struct dlm_ls *ls)
|
|
{
|
|
char *p;
|
|
|
|
p = kzalloc(ls->ls_lvblen, GFP_NOFS);
|
|
return p;
|
|
}
|
|
|
|
void dlm_free_lvb(char *p)
|
|
{
|
|
kfree(p);
|
|
}
|
|
|
|
struct dlm_rsb *dlm_allocate_rsb(struct dlm_ls *ls)
|
|
{
|
|
struct dlm_rsb *r;
|
|
|
|
r = kmem_cache_zalloc(rsb_cache, GFP_NOFS);
|
|
return r;
|
|
}
|
|
|
|
void dlm_free_rsb(struct dlm_rsb *r)
|
|
{
|
|
if (r->res_lvbptr)
|
|
dlm_free_lvb(r->res_lvbptr);
|
|
kmem_cache_free(rsb_cache, r);
|
|
}
|
|
|
|
struct dlm_lkb *dlm_allocate_lkb(struct dlm_ls *ls)
|
|
{
|
|
struct dlm_lkb *lkb;
|
|
|
|
lkb = kmem_cache_zalloc(lkb_cache, GFP_NOFS);
|
|
return lkb;
|
|
}
|
|
|
|
void dlm_free_lkb(struct dlm_lkb *lkb)
|
|
{
|
|
if (lkb->lkb_flags & DLM_IFL_USER) {
|
|
struct dlm_user_args *ua;
|
|
ua = lkb->lkb_ua;
|
|
if (ua) {
|
|
kfree(ua->lksb.sb_lvbptr);
|
|
kfree(ua);
|
|
}
|
|
}
|
|
kmem_cache_free(lkb_cache, lkb);
|
|
}
|
|
|