[mirror_ubuntu-jammy-kernel.git] / fs / dlm / memory.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);
}
Commit	Line	Data
e7fd4179 DT	1	/******************************************************************************
	2	*******************************************************************************
	3	**
	4	** Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
52bda2b5	5	** Copyright (C) 2004-2007 Red Hat, Inc. All rights reserved.
e7fd4179 DT	6	**
	7	** This copyrighted material is made available to anyone wishing to use,
	8	** modify, copy, or redistribute it subject to the terms and conditions
	9	** of the GNU General Public License v.2.
	10	**
	11	*******************************************************************************
	12	******************************************************************************/
	13
	14	#include "dlm_internal.h"
	15	#include "config.h"
	16	#include "memory.h"
	17
e18b890b	18	static struct kmem_cache *lkb_cache;
3881ac04	19	static struct kmem_cache *rsb_cache;
e7fd4179 DT	20
e7fd4179 DT	21
30727174	22	int __init dlm_memory_init(void)
e7fd4179	23	{
e7fd4179	24	lkb_cache = kmem_cache_create("dlm_lkb", sizeof(struct dlm_lkb),
20c2df83	25	__alignof__(struct dlm_lkb), 0, NULL);
e7fd4179	26	if (!lkb_cache)
75af271e	27	return -ENOMEM;
3881ac04 DT	28
	29	rsb_cache = kmem_cache_create("dlm_rsb", sizeof(struct dlm_rsb),
	30	__alignof__(struct dlm_rsb), 0, NULL);
	31	if (!rsb_cache) {
	32	kmem_cache_destroy(lkb_cache);
75af271e	33	return -ENOMEM;
3881ac04 DT	34	}
3881ac04 DT	35
75af271e	36	return 0;
e7fd4179 DT	37	}
	38
	39	void dlm_memory_exit(void)
	40	{
f31a8969 WY	41	kmem_cache_destroy(lkb_cache);
f31a8969 WY	42	kmem_cache_destroy(rsb_cache);
e7fd4179 DT	43	}
e7fd4179 DT	44
52bda2b5	45	char dlm_allocate_lvb(struct dlm_ls ls)
e7fd4179 DT	46	{
	47	char *p;
	48
573c24c4	49	p = kzalloc(ls->ls_lvblen, GFP_NOFS);
e7fd4179 DT	50	return p;
	51	}
	52
52bda2b5	53	void dlm_free_lvb(char *p)
e7fd4179 DT	54	{
	55	kfree(p);
	56	}
	57
3881ac04	58	struct dlm_rsb dlm_allocate_rsb(struct dlm_ls ls)
e7fd4179 DT	59	{
	60	struct dlm_rsb *r;
	61
3881ac04	62	r = kmem_cache_zalloc(rsb_cache, GFP_NOFS);
e7fd4179 DT	63	return r;
	64	}
	65
52bda2b5	66	void dlm_free_rsb(struct dlm_rsb *r)
e7fd4179 DT	67	{
e7fd4179 DT	68	if (r->res_lvbptr)
52bda2b5	69	dlm_free_lvb(r->res_lvbptr);
3881ac04	70	kmem_cache_free(rsb_cache, r);
e7fd4179 DT	71	}
e7fd4179 DT	72
52bda2b5	73	struct dlm_lkb dlm_allocate_lkb(struct dlm_ls ls)
e7fd4179 DT	74	{
	75	struct dlm_lkb *lkb;
	76
573c24c4	77	lkb = kmem_cache_zalloc(lkb_cache, GFP_NOFS);
e7fd4179 DT	78	return lkb;
	79	}
	80
52bda2b5	81	void dlm_free_lkb(struct dlm_lkb *lkb)
e7fd4179	82	{
597d0cae DT	83	if (lkb->lkb_flags & DLM_IFL_USER) {
597d0cae DT	84	struct dlm_user_args *ua;
d292c0cc	85	ua = lkb->lkb_ua;
597d0cae	86	if (ua) {
f31a8969	87	kfree(ua->lksb.sb_lvbptr);
597d0cae DT	88	kfree(ua);
	89	}
	90	}
e7fd4179 DT	91	kmem_cache_free(lkb_cache, lkb);
	92	}
	93