patch-2.4.10 linux/fs/jffs2/malloc.c

• Lines: 221
• Date: Fri Sep 14 14:04:07 2001
• Orig file: v2.4.9/linux/fs/jffs2/malloc.c
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.4.9/linux/fs/jffs2/malloc.c linux/fs/jffs2/malloc.c
@@ -0,0 +1,220 @@
+/*
+ * JFFS2 -- Journalling Flash File System, Version 2.
+ *
+ * Copyright (C) 2001 Red Hat, Inc.
+ *
+ * Created by David Woodhouse <dwmw2@cambridge.redhat.com>
+ *
+ * The original JFFS, from which the design for JFFS2 was derived,
+ * was designed and implemented by Axis Communications AB.
+ *
+ * The contents of this file are subject to the Red Hat eCos Public
+ * License Version 1.1 (the "Licence"); you may not use this file
+ * except in compliance with the Licence.  You may obtain a copy of
+ * the Licence at http://www.redhat.com/
+ *
+ * Software distributed under the Licence is distributed on an "AS IS"
+ * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied.
+ * See the Licence for the specific language governing rights and
+ * limitations under the Licence.
+ *
+ * The Original Code is JFFS2 - Journalling Flash File System, version 2
+ *
+ * Alternatively, the contents of this file may be used under the
+ * terms of the GNU General Public License version 2 (the "GPL"), in
+ * which case the provisions of the GPL are applicable instead of the
+ * above.  If you wish to allow the use of your version of this file
+ * only under the terms of the GPL and not to allow others to use your
+ * version of this file under the RHEPL, indicate your decision by
+ * deleting the provisions above and replace them with the notice and
+ * other provisions required by the GPL.  If you do not delete the
+ * provisions above, a recipient may use your version of this file
+ * under either the RHEPL or the GPL.
+ *
+ * $Id: malloc.c,v 1.16 2001/03/15 15:38:24 dwmw2 Exp $
+ *
+ */
+
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/init.h>
+#include <linux/jffs2.h>
+#include "nodelist.h"
+
+#if 0
+#define JFFS2_SLAB_POISON SLAB_POISON
+#else
+#define JFFS2_SLAB_POISON 0
+#endif
+
+/* These are initialised to NULL in the kernel startup code.
+   If you're porting to other operating systems, beware */
+static kmem_cache_t *full_dnode_slab;
+static kmem_cache_t *raw_dirent_slab;
+static kmem_cache_t *raw_inode_slab;
+static kmem_cache_t *tmp_dnode_info_slab;
+static kmem_cache_t *raw_node_ref_slab;
+static kmem_cache_t *node_frag_slab;
+static kmem_cache_t *inode_cache_slab;
+
+void jffs2_free_tmp_dnode_info_list(struct jffs2_tmp_dnode_info *tn)
+{
+	struct jffs2_tmp_dnode_info *next;
+
+	while (tn) {
+		next = tn;
+		tn = tn->next;
+		jffs2_free_full_dnode(next->fn);
+		jffs2_free_tmp_dnode_info(next);
+	}
+}
+
+void jffs2_free_full_dirent_list(struct jffs2_full_dirent *fd)
+{
+	struct jffs2_full_dirent *next;
+
+	while (fd) {
+		next = fd->next;
+		jffs2_free_full_dirent(fd);
+		fd = next;
+	}
+}
+
+int __init jffs2_create_slab_caches(void)
+{
+	full_dnode_slab = kmem_cache_create("jffs2_full_dnode", sizeof(struct jffs2_full_dnode), 0, JFFS2_SLAB_POISON, NULL, NULL);
+	if (!full_dnode_slab)
+		goto err;
+
+	raw_dirent_slab = kmem_cache_create("jffs2_raw_dirent", sizeof(struct jffs2_raw_dirent), 0, JFFS2_SLAB_POISON, NULL, NULL);
+	if (!raw_dirent_slab)
+		goto err;
+
+	raw_inode_slab = kmem_cache_create("jffs2_raw_inode", sizeof(struct jffs2_raw_inode), 0, JFFS2_SLAB_POISON, NULL, NULL);
+	if (!raw_inode_slab)
+		goto err;
+
+	tmp_dnode_info_slab = kmem_cache_create("jffs2_tmp_dnode", sizeof(struct jffs2_tmp_dnode_info), 0, JFFS2_SLAB_POISON, NULL, NULL);
+	if (!tmp_dnode_info_slab)
+		goto err;
+
+	raw_node_ref_slab = kmem_cache_create("jffs2_raw_node_ref", sizeof(struct jffs2_raw_node_ref), 0, JFFS2_SLAB_POISON, NULL, NULL);
+	if (!raw_node_ref_slab)
+		goto err;
+
+	node_frag_slab = kmem_cache_create("jffs2_node_frag", sizeof(struct jffs2_node_frag), 0, JFFS2_SLAB_POISON, NULL, NULL);
+	if (!node_frag_slab)
+		goto err;
+
+	inode_cache_slab = kmem_cache_create("jffs2_inode_cache", sizeof(struct jffs2_inode_cache), 0, JFFS2_SLAB_POISON, NULL, NULL);
+
+	if (inode_cache_slab)
+		return 0;
+ err:
+	jffs2_destroy_slab_caches();
+	return -ENOMEM;
+}
+
+void jffs2_destroy_slab_caches(void)
+{
+	if(full_dnode_slab)
+		kmem_cache_destroy(full_dnode_slab);
+	if(raw_dirent_slab)
+		kmem_cache_destroy(raw_dirent_slab);
+	if(raw_inode_slab)
+		kmem_cache_destroy(raw_inode_slab);
+	if(tmp_dnode_info_slab)
+		kmem_cache_destroy(tmp_dnode_info_slab);
+	if(raw_node_ref_slab)
+		kmem_cache_destroy(raw_node_ref_slab);
+	if(node_frag_slab)
+		kmem_cache_destroy(node_frag_slab);
+	if(inode_cache_slab)
+		kmem_cache_destroy(inode_cache_slab);
+
+}
+
+struct jffs2_full_dirent *jffs2_alloc_full_dirent(int namesize)
+{
+	return kmalloc(sizeof(struct jffs2_full_dirent) + namesize, GFP_KERNEL);
+}
+
+void jffs2_free_full_dirent(struct jffs2_full_dirent *x)
+{
+	kfree(x);
+}
+
+struct jffs2_full_dnode *jffs2_alloc_full_dnode(void)
+{
+	void *ret = kmem_cache_alloc(full_dnode_slab, GFP_KERNEL);
+	return ret;
+}
+
+void jffs2_free_full_dnode(struct jffs2_full_dnode *x)
+{
+	kmem_cache_free(full_dnode_slab, x);
+}
+
+struct jffs2_raw_dirent *jffs2_alloc_raw_dirent(void)
+{
+	return kmem_cache_alloc(raw_dirent_slab, GFP_KERNEL);
+}
+
+void jffs2_free_raw_dirent(struct jffs2_raw_dirent *x)
+{
+	kmem_cache_free(raw_dirent_slab, x);
+}
+
+struct jffs2_raw_inode *jffs2_alloc_raw_inode(void)
+{
+	return kmem_cache_alloc(raw_inode_slab, GFP_KERNEL);
+}
+
+void jffs2_free_raw_inode(struct jffs2_raw_inode *x)
+{
+	kmem_cache_free(raw_inode_slab, x);
+}
+
+struct jffs2_tmp_dnode_info *jffs2_alloc_tmp_dnode_info(void)
+{
+	return kmem_cache_alloc(tmp_dnode_info_slab, GFP_KERNEL);
+}
+
+void jffs2_free_tmp_dnode_info(struct jffs2_tmp_dnode_info *x)
+{
+	kmem_cache_free(tmp_dnode_info_slab, x);
+}
+
+struct jffs2_raw_node_ref *jffs2_alloc_raw_node_ref(void)
+{
+	return kmem_cache_alloc(raw_node_ref_slab, GFP_KERNEL);
+}
+
+void jffs2_free_raw_node_ref(struct jffs2_raw_node_ref *x)
+{
+	kmem_cache_free(raw_node_ref_slab, x);
+}
+
+struct jffs2_node_frag *jffs2_alloc_node_frag(void)
+{
+	return kmem_cache_alloc(node_frag_slab, GFP_KERNEL);
+}
+
+void jffs2_free_node_frag(struct jffs2_node_frag *x)
+{
+	kmem_cache_free(node_frag_slab, x);
+}
+
+struct jffs2_inode_cache *jffs2_alloc_inode_cache(void)
+{
+	struct jffs2_inode_cache *ret = kmem_cache_alloc(inode_cache_slab, GFP_KERNEL);
+	D1(printk(KERN_DEBUG "Allocated inocache at %p\n", ret));
+	return ret;
+}
+
+void jffs2_free_inode_cache(struct jffs2_inode_cache *x)
+{
+	D1(printk(KERN_DEBUG "Freeing inocache at %p\n", x));
+	kmem_cache_free(inode_cache_slab, x);
+}
+