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);
+}