2 * JFFS2 -- Journalling Flash File System, Version 2.
4 * Copyright (C) 2001-2003 Red Hat, Inc.
6 * Created by David Woodhouse <dwmw2@infradead.org>
8 * For licensing information, see the file 'LICENCE' in this directory.
10 * $Id: malloc.c,v 1.31 2005/11/07 11:14:40 gleixner Exp $
14 #include <linux/kernel.h>
15 #include <linux/slab.h>
16 #include <linux/init.h>
17 #include <linux/jffs2.h>
20 /* These are initialised to NULL in the kernel startup code.
21 If you're porting to other operating systems, beware */
22 static kmem_cache_t *full_dnode_slab;
23 static kmem_cache_t *raw_dirent_slab;
24 static kmem_cache_t *raw_inode_slab;
25 static kmem_cache_t *tmp_dnode_info_slab;
26 static kmem_cache_t *raw_node_ref_slab;
27 static kmem_cache_t *node_frag_slab;
28 static kmem_cache_t *inode_cache_slab;
30 int __init jffs2_create_slab_caches(void)
32 full_dnode_slab = kmem_cache_create("jffs2_full_dnode",
33 sizeof(struct jffs2_full_dnode),
38 raw_dirent_slab = kmem_cache_create("jffs2_raw_dirent",
39 sizeof(struct jffs2_raw_dirent),
44 raw_inode_slab = kmem_cache_create("jffs2_raw_inode",
45 sizeof(struct jffs2_raw_inode),
50 tmp_dnode_info_slab = kmem_cache_create("jffs2_tmp_dnode",
51 sizeof(struct jffs2_tmp_dnode_info),
53 if (!tmp_dnode_info_slab)
56 raw_node_ref_slab = kmem_cache_create("jffs2_raw_node_ref",
57 sizeof(struct jffs2_raw_node_ref),
59 if (!raw_node_ref_slab)
62 node_frag_slab = kmem_cache_create("jffs2_node_frag",
63 sizeof(struct jffs2_node_frag),
68 inode_cache_slab = kmem_cache_create("jffs2_inode_cache",
69 sizeof(struct jffs2_inode_cache),
74 jffs2_destroy_slab_caches();
78 void jffs2_destroy_slab_caches(void)
81 kmem_cache_destroy(full_dnode_slab);
83 kmem_cache_destroy(raw_dirent_slab);
85 kmem_cache_destroy(raw_inode_slab);
86 if(tmp_dnode_info_slab)
87 kmem_cache_destroy(tmp_dnode_info_slab);
89 kmem_cache_destroy(raw_node_ref_slab);
91 kmem_cache_destroy(node_frag_slab);
93 kmem_cache_destroy(inode_cache_slab);
96 struct jffs2_full_dirent *jffs2_alloc_full_dirent(int namesize)
98 struct jffs2_full_dirent *ret;
99 ret = kmalloc(sizeof(struct jffs2_full_dirent) + namesize, GFP_KERNEL);
100 dbg_memalloc("%p\n", ret);
104 void jffs2_free_full_dirent(struct jffs2_full_dirent *x)
106 dbg_memalloc("%p\n", x);
110 struct jffs2_full_dnode *jffs2_alloc_full_dnode(void)
112 struct jffs2_full_dnode *ret;
113 ret = kmem_cache_alloc(full_dnode_slab, GFP_KERNEL);
114 dbg_memalloc("%p\n", ret);
118 void jffs2_free_full_dnode(struct jffs2_full_dnode *x)
120 dbg_memalloc("%p\n", x);
121 kmem_cache_free(full_dnode_slab, x);
124 struct jffs2_raw_dirent *jffs2_alloc_raw_dirent(void)
126 struct jffs2_raw_dirent *ret;
127 ret = kmem_cache_alloc(raw_dirent_slab, GFP_KERNEL);
128 dbg_memalloc("%p\n", ret);
132 void jffs2_free_raw_dirent(struct jffs2_raw_dirent *x)
134 dbg_memalloc("%p\n", x);
135 kmem_cache_free(raw_dirent_slab, x);
138 struct jffs2_raw_inode *jffs2_alloc_raw_inode(void)
140 struct jffs2_raw_inode *ret;
141 ret = kmem_cache_alloc(raw_inode_slab, GFP_KERNEL);
142 dbg_memalloc("%p\n", ret);
146 void jffs2_free_raw_inode(struct jffs2_raw_inode *x)
148 dbg_memalloc("%p\n", x);
149 kmem_cache_free(raw_inode_slab, x);
152 struct jffs2_tmp_dnode_info *jffs2_alloc_tmp_dnode_info(void)
154 struct jffs2_tmp_dnode_info *ret;
155 ret = kmem_cache_alloc(tmp_dnode_info_slab, GFP_KERNEL);
161 void jffs2_free_tmp_dnode_info(struct jffs2_tmp_dnode_info *x)
163 dbg_memalloc("%p\n", x);
164 kmem_cache_free(tmp_dnode_info_slab, x);
167 struct jffs2_raw_node_ref *jffs2_alloc_raw_node_ref(void)
169 struct jffs2_raw_node_ref *ret;
170 ret = kmem_cache_alloc(raw_node_ref_slab, GFP_KERNEL);
171 dbg_memalloc("%p\n", ret);
175 void jffs2_free_raw_node_ref(struct jffs2_raw_node_ref *x)
177 dbg_memalloc("%p\n", x);
178 kmem_cache_free(raw_node_ref_slab, x);
181 struct jffs2_node_frag *jffs2_alloc_node_frag(void)
183 struct jffs2_node_frag *ret;
184 ret = kmem_cache_alloc(node_frag_slab, GFP_KERNEL);
185 dbg_memalloc("%p\n", ret);
189 void jffs2_free_node_frag(struct jffs2_node_frag *x)
191 dbg_memalloc("%p\n", x);
192 kmem_cache_free(node_frag_slab, x);
195 struct jffs2_inode_cache *jffs2_alloc_inode_cache(void)
197 struct jffs2_inode_cache *ret;
198 ret = kmem_cache_alloc(inode_cache_slab, GFP_KERNEL);
199 dbg_memalloc("%p\n", ret);
203 void jffs2_free_inode_cache(struct jffs2_inode_cache *x)
205 dbg_memalloc("%p\n", x);
206 kmem_cache_free(inode_cache_slab, x);