Something went wrong. Try again.
Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
Something went wrong. Try again.
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180// 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);}