[mirror_ubuntu-hirsute-kernel.git] / fs / dlm / memory.c

// SPDX-License-Identifier: GPL-2.0-only
/******************************************************************************
*******************************************************************************
**
**  Copyright (C) Sistina Software, Inc.  1997-2003  All rights reserved.
**  Copyright (C) 2004-2007 Red Hat, Inc.  All rights reserved.
**
**
*******************************************************************************
******************************************************************************/

#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
2522fe45	1	// SPDX-License-Identifier: GPL-2.0-only
e7fd4179 DT	2	/******************************************************************************
	3	*******************************************************************************
	4	**
	5	** Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
52bda2b5	6	** Copyright (C) 2004-2007 Red Hat, Inc. All rights reserved.
e7fd4179	7	**
e7fd4179 DT	8	**
	9	*******************************************************************************
	10	******************************************************************************/
	11
	12	#include "dlm_internal.h"
	13	#include "config.h"
	14	#include "memory.h"
	15
e18b890b	16	static struct kmem_cache *lkb_cache;
3881ac04	17	static struct kmem_cache *rsb_cache;
e7fd4179 DT	18
e7fd4179 DT	19
30727174	20	int __init dlm_memory_init(void)
e7fd4179	21	{
e7fd4179	22	lkb_cache = kmem_cache_create("dlm_lkb", sizeof(struct dlm_lkb),
20c2df83	23	__alignof__(struct dlm_lkb), 0, NULL);
e7fd4179	24	if (!lkb_cache)
75af271e	25	return -ENOMEM;
3881ac04 DT	26
	27	rsb_cache = kmem_cache_create("dlm_rsb", sizeof(struct dlm_rsb),
	28	__alignof__(struct dlm_rsb), 0, NULL);
	29	if (!rsb_cache) {
	30	kmem_cache_destroy(lkb_cache);
75af271e	31	return -ENOMEM;
3881ac04 DT	32	}
3881ac04 DT	33
75af271e	34	return 0;
e7fd4179 DT	35	}
	36
	37	void dlm_memory_exit(void)
	38	{
f31a8969 WY	39	kmem_cache_destroy(lkb_cache);
f31a8969 WY	40	kmem_cache_destroy(rsb_cache);
e7fd4179 DT	41	}
e7fd4179 DT	42
52bda2b5	43	char dlm_allocate_lvb(struct dlm_ls ls)
e7fd4179 DT	44	{
	45	char *p;
	46
573c24c4	47	p = kzalloc(ls->ls_lvblen, GFP_NOFS);
e7fd4179 DT	48	return p;
	49	}
	50
52bda2b5	51	void dlm_free_lvb(char *p)
e7fd4179 DT	52	{
	53	kfree(p);
	54	}
	55
3881ac04	56	struct dlm_rsb dlm_allocate_rsb(struct dlm_ls ls)
e7fd4179 DT	57	{
	58	struct dlm_rsb *r;
	59
3881ac04	60	r = kmem_cache_zalloc(rsb_cache, GFP_NOFS);
e7fd4179 DT	61	return r;
	62	}
	63
52bda2b5	64	void dlm_free_rsb(struct dlm_rsb *r)
e7fd4179 DT	65	{
e7fd4179 DT	66	if (r->res_lvbptr)
52bda2b5	67	dlm_free_lvb(r->res_lvbptr);
3881ac04	68	kmem_cache_free(rsb_cache, r);
e7fd4179 DT	69	}
e7fd4179 DT	70
52bda2b5	71	struct dlm_lkb dlm_allocate_lkb(struct dlm_ls ls)
e7fd4179 DT	72	{
	73	struct dlm_lkb *lkb;
	74
573c24c4	75	lkb = kmem_cache_zalloc(lkb_cache, GFP_NOFS);
e7fd4179 DT	76	return lkb;
	77	}
	78
52bda2b5	79	void dlm_free_lkb(struct dlm_lkb *lkb)
e7fd4179	80	{
597d0cae DT	81	if (lkb->lkb_flags & DLM_IFL_USER) {
597d0cae DT	82	struct dlm_user_args *ua;
d292c0cc	83	ua = lkb->lkb_ua;
597d0cae	84	if (ua) {
f31a8969	85	kfree(ua->lksb.sb_lvbptr);
597d0cae DT	86	kfree(ua);
	87	}
	88	}
e7fd4179 DT	89	kmem_cache_free(lkb_cache, lkb);
	90	}
	91