// 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 "midcomms.h"#include "lowcomms.h"#include "config.h"#include "memory.h"#include "ast.h" static struct kmem_cache *writequeue_cache;static struct kmem_cache *mhandle_cache;static struct kmem_cache *msg_cache;static struct kmem_cache *lkb_cache;static struct kmem_cache *rsb_cache;static struct kmem_cache *cb_cache;  int __init dlm_memory_init(void){	writequeue_cache = dlm_lowcomms_writequeue_cache_create();	if (!writequeue_cache)		goto out; 	mhandle_cache = dlm_midcomms_cache_create();	if (!mhandle_cache)		goto mhandle; 	lkb_cache = kmem_cache_create("dlm_lkb", sizeof(struct dlm_lkb),				__alignof__(struct dlm_lkb), 0, NULL);	if (!lkb_cache)		goto lkb; 	msg_cache = dlm_lowcomms_msg_cache_create();	if (!msg_cache)		goto msg; 	rsb_cache = kmem_cache_create("dlm_rsb", sizeof(struct dlm_rsb),				__alignof__(struct dlm_rsb), 0, NULL);	if (!rsb_cache)		goto rsb; 	cb_cache = kmem_cache_create_usercopy("dlm_cb", sizeof(struct dlm_callback),				     __alignof__(struct dlm_callback), 0,					 offsetof(struct dlm_callback, lvbptr),					 sizeof_field(struct dlm_callback, lvbptr),				     NULL);	if (!cb_cache)		goto cb; 	return 0; cb:	kmem_cache_destroy(rsb_cache);rsb:	kmem_cache_destroy(msg_cache);msg:	kmem_cache_destroy(lkb_cache);lkb:	kmem_cache_destroy(mhandle_cache);mhandle:	kmem_cache_destroy(writequeue_cache);out:	return -ENOMEM;} void dlm_memory_exit(void){	rcu_barrier(); 	kmem_cache_destroy(writequeue_cache);	kmem_cache_destroy(mhandle_cache);	kmem_cache_destroy(msg_cache);	kmem_cache_destroy(lkb_cache);	kmem_cache_destroy(rsb_cache);	kmem_cache_destroy(cb_cache);} char *dlm_allocate_lvb(struct dlm_ls *ls){	return kzalloc(ls->ls_lvblen, GFP_ATOMIC);} void dlm_free_lvb(char *p){	kfree(p);} struct dlm_rsb *dlm_allocate_rsb(void){	return kmem_cache_zalloc(rsb_cache, GFP_ATOMIC);} static void __free_rsb_rcu(struct rcu_head *rcu){	struct dlm_rsb *r = container_of(rcu, struct dlm_rsb, rcu);	if (r->res_lvbptr)		dlm_free_lvb(r->res_lvbptr);	kmem_cache_free(rsb_cache, r);} void dlm_free_rsb(struct dlm_rsb *r){	call_rcu(&r->rcu, __free_rsb_rcu);} struct dlm_lkb *dlm_allocate_lkb(void){	return kmem_cache_zalloc(lkb_cache, GFP_ATOMIC);} static void __free_lkb_rcu(struct rcu_head *rcu){	struct dlm_lkb *lkb = container_of(rcu, struct dlm_lkb, rcu); 	if (test_bit(DLM_DFL_USER_BIT, &lkb->lkb_dflags)) {		struct dlm_user_args *ua;		ua = lkb->lkb_ua;		if (ua) {			kfree(ua->lksb.sb_lvbptr);			kfree(ua);		}	} 	kmem_cache_free(lkb_cache, lkb);} void dlm_free_lkb(struct dlm_lkb *lkb){	call_rcu(&lkb->rcu, __free_lkb_rcu);} struct dlm_mhandle *dlm_allocate_mhandle(void){	return kmem_cache_alloc(mhandle_cache, GFP_ATOMIC);} void dlm_free_mhandle(struct dlm_mhandle *mhandle){	kmem_cache_free(mhandle_cache, mhandle);} struct writequeue_entry *dlm_allocate_writequeue(void){	return kmem_cache_alloc(writequeue_cache, GFP_ATOMIC);} void dlm_free_writequeue(struct writequeue_entry *writequeue){	kmem_cache_free(writequeue_cache, writequeue);} struct dlm_msg *dlm_allocate_msg(void){	return kmem_cache_alloc(msg_cache, GFP_ATOMIC);} void dlm_free_msg(struct dlm_msg *msg){	kmem_cache_free(msg_cache, msg);} struct dlm_callback *dlm_allocate_cb(void){	return kmem_cache_alloc(cb_cache, GFP_ATOMIC);} void dlm_free_cb(struct dlm_callback *cb){	kmem_cache_free(cb_cache, cb);}