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-rw-r--r--fs/dlm/memory.c175
1 files changed, 175 insertions, 0 deletions
diff --git a/fs/dlm/memory.c b/fs/dlm/memory.c
new file mode 100644
index 0000000000..64f212a066
--- /dev/null
+++ b/fs/dlm/memory.c
@@ -0,0 +1,175 @@
+// 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("dlm_cb", sizeof(struct dlm_callback),
+ __alignof__(struct dlm_callback), 0,
+ 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)
+{
+ 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)
+{
+ 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 (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);
+ }
+ }
+
+ /* drop references if they are set */
+ dlm_callback_set_last_ptr(&lkb->lkb_last_cast, NULL);
+ dlm_callback_set_last_ptr(&lkb->lkb_last_cb, NULL);
+
+ kmem_cache_free(lkb_cache, lkb);
+}
+
+struct dlm_mhandle *dlm_allocate_mhandle(gfp_t allocation)
+{
+ return kmem_cache_alloc(mhandle_cache, allocation);
+}
+
+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(gfp_t allocation)
+{
+ return kmem_cache_alloc(msg_cache, allocation);
+}
+
+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);
+}