Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / fs / dlm / memory.c

diff --git a/kernel/fs/dlm/memory.c b/kernel/fs/dlm/memory.c
new file mode 100644 (file)
index 0000000..7cd24bc
--- /dev/null
+++ b/kernel/fs/dlm/memory.c
@@ -0,0 +1,96 @@
+/******************************************************************************
+*******************************************************************************
+**
+**  Copyright (C) Sistina Software, Inc.  1997-2003  All rights reserved.
+**  Copyright (C) 2004-2007 Red Hat, Inc.  All rights reserved.
+**
+**  This copyrighted material is made available to anyone wishing to use,
+**  modify, copy, or redistribute it subject to the terms and conditions
+**  of the GNU General Public License v.2.
+**
+*******************************************************************************
+******************************************************************************/
+
+#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)
+{
+       if (lkb_cache)
+               kmem_cache_destroy(lkb_cache);
+       if (rsb_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) {
+                       if (ua->lksb.sb_lvbptr)
+                               kfree(ua->lksb.sb_lvbptr);
+                       kfree(ua);
+               }
+       }
+       kmem_cache_free(lkb_cache, lkb);
+}
+