blob: 3d5b7ecfbf8d5b56a6852d98279221645788fd03 [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
2 * JFFS2 -- Journalling Flash File System, Version 2.
3 *
4 * Copyright (C) 2001-2003 Red Hat, Inc.
5 *
6 * Created by David Woodhouse <dwmw2@infradead.org>
7 *
8 * For licensing information, see the file 'LICENCE' in this directory.
9 *
Thomas Gleixner182ec4e2005-11-07 11:16:07 +000010 * $Id: malloc.c,v 1.31 2005/11/07 11:14:40 gleixner Exp $
Linus Torvalds1da177e2005-04-16 15:20:36 -070011 *
12 */
13
14#include <linux/kernel.h>
15#include <linux/slab.h>
16#include <linux/init.h>
17#include <linux/jffs2.h>
18#include "nodelist.h"
19
Linus Torvalds1da177e2005-04-16 15:20:36 -070020/* These are initialised to NULL in the kernel startup code.
21 If you're porting to other operating systems, beware */
22static kmem_cache_t *full_dnode_slab;
23static kmem_cache_t *raw_dirent_slab;
24static kmem_cache_t *raw_inode_slab;
25static kmem_cache_t *tmp_dnode_info_slab;
26static kmem_cache_t *raw_node_ref_slab;
27static kmem_cache_t *node_frag_slab;
28static kmem_cache_t *inode_cache_slab;
KaiGai Koheiaa98d7c2006-05-13 15:09:47 +090029#ifdef CONFIG_JFFS2_FS_XATTR
30static kmem_cache_t *xattr_datum_cache;
31static kmem_cache_t *xattr_ref_cache;
32#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -070033
34int __init jffs2_create_slab_caches(void)
35{
Thomas Gleixner182ec4e2005-11-07 11:16:07 +000036 full_dnode_slab = kmem_cache_create("jffs2_full_dnode",
Linus Torvalds1da177e2005-04-16 15:20:36 -070037 sizeof(struct jffs2_full_dnode),
Artem B. Bityutskiyf538c962005-07-27 15:16:57 +010038 0, 0, NULL, NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -070039 if (!full_dnode_slab)
40 goto err;
41
42 raw_dirent_slab = kmem_cache_create("jffs2_raw_dirent",
43 sizeof(struct jffs2_raw_dirent),
Artem B. Bityutskiyf538c962005-07-27 15:16:57 +010044 0, 0, NULL, NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -070045 if (!raw_dirent_slab)
46 goto err;
47
48 raw_inode_slab = kmem_cache_create("jffs2_raw_inode",
49 sizeof(struct jffs2_raw_inode),
Artem B. Bityutskiyf538c962005-07-27 15:16:57 +010050 0, 0, NULL, NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -070051 if (!raw_inode_slab)
52 goto err;
53
54 tmp_dnode_info_slab = kmem_cache_create("jffs2_tmp_dnode",
55 sizeof(struct jffs2_tmp_dnode_info),
Artem B. Bityutskiyf538c962005-07-27 15:16:57 +010056 0, 0, NULL, NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -070057 if (!tmp_dnode_info_slab)
58 goto err;
59
60 raw_node_ref_slab = kmem_cache_create("jffs2_raw_node_ref",
61 sizeof(struct jffs2_raw_node_ref),
Artem B. Bityutskiyf538c962005-07-27 15:16:57 +010062 0, 0, NULL, NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -070063 if (!raw_node_ref_slab)
64 goto err;
65
66 node_frag_slab = kmem_cache_create("jffs2_node_frag",
67 sizeof(struct jffs2_node_frag),
Artem B. Bityutskiyf538c962005-07-27 15:16:57 +010068 0, 0, NULL, NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -070069 if (!node_frag_slab)
70 goto err;
71
72 inode_cache_slab = kmem_cache_create("jffs2_inode_cache",
73 sizeof(struct jffs2_inode_cache),
Artem B. Bityutskiyf538c962005-07-27 15:16:57 +010074 0, 0, NULL, NULL);
KaiGai Koheiaa98d7c2006-05-13 15:09:47 +090075 if (!inode_cache_slab)
76 goto err;
77
78#ifdef CONFIG_JFFS2_FS_XATTR
79 xattr_datum_cache = kmem_cache_create("jffs2_xattr_datum",
80 sizeof(struct jffs2_xattr_datum),
81 0, 0, NULL, NULL);
82 if (!xattr_datum_cache)
83 goto err;
84
85 xattr_ref_cache = kmem_cache_create("jffs2_xattr_ref",
86 sizeof(struct jffs2_xattr_ref),
87 0, 0, NULL, NULL);
88 if (!xattr_ref_cache)
89 goto err;
90#endif
91
92 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -070093 err:
94 jffs2_destroy_slab_caches();
95 return -ENOMEM;
96}
97
98void jffs2_destroy_slab_caches(void)
99{
100 if(full_dnode_slab)
101 kmem_cache_destroy(full_dnode_slab);
102 if(raw_dirent_slab)
103 kmem_cache_destroy(raw_dirent_slab);
104 if(raw_inode_slab)
105 kmem_cache_destroy(raw_inode_slab);
106 if(tmp_dnode_info_slab)
107 kmem_cache_destroy(tmp_dnode_info_slab);
108 if(raw_node_ref_slab)
109 kmem_cache_destroy(raw_node_ref_slab);
110 if(node_frag_slab)
111 kmem_cache_destroy(node_frag_slab);
112 if(inode_cache_slab)
113 kmem_cache_destroy(inode_cache_slab);
KaiGai Koheiaa98d7c2006-05-13 15:09:47 +0900114#ifdef CONFIG_JFFS2_FS_XATTR
115 if (xattr_datum_cache)
116 kmem_cache_destroy(xattr_datum_cache);
117 if (xattr_ref_cache)
118 kmem_cache_destroy(xattr_ref_cache);
119#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700120}
121
122struct jffs2_full_dirent *jffs2_alloc_full_dirent(int namesize)
123{
Artem B. Bityutskiyf538c962005-07-27 15:16:57 +0100124 struct jffs2_full_dirent *ret;
125 ret = kmalloc(sizeof(struct jffs2_full_dirent) + namesize, GFP_KERNEL);
Artem B. Bityutskiy733802d2005-09-22 12:25:00 +0100126 dbg_memalloc("%p\n", ret);
Artem B. Bityutskiyf538c962005-07-27 15:16:57 +0100127 return ret;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700128}
129
130void jffs2_free_full_dirent(struct jffs2_full_dirent *x)
131{
Artem B. Bityutskiy733802d2005-09-22 12:25:00 +0100132 dbg_memalloc("%p\n", x);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700133 kfree(x);
134}
135
136struct jffs2_full_dnode *jffs2_alloc_full_dnode(void)
137{
Artem B. Bityutskiyf538c962005-07-27 15:16:57 +0100138 struct jffs2_full_dnode *ret;
139 ret = kmem_cache_alloc(full_dnode_slab, GFP_KERNEL);
Artem B. Bityutskiy733802d2005-09-22 12:25:00 +0100140 dbg_memalloc("%p\n", ret);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700141 return ret;
142}
143
144void jffs2_free_full_dnode(struct jffs2_full_dnode *x)
145{
Artem B. Bityutskiy733802d2005-09-22 12:25:00 +0100146 dbg_memalloc("%p\n", x);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700147 kmem_cache_free(full_dnode_slab, x);
148}
149
150struct jffs2_raw_dirent *jffs2_alloc_raw_dirent(void)
151{
Artem B. Bityutskiyf538c962005-07-27 15:16:57 +0100152 struct jffs2_raw_dirent *ret;
153 ret = kmem_cache_alloc(raw_dirent_slab, GFP_KERNEL);
Artem B. Bityutskiy733802d2005-09-22 12:25:00 +0100154 dbg_memalloc("%p\n", ret);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700155 return ret;
156}
157
158void jffs2_free_raw_dirent(struct jffs2_raw_dirent *x)
159{
Artem B. Bityutskiy733802d2005-09-22 12:25:00 +0100160 dbg_memalloc("%p\n", x);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700161 kmem_cache_free(raw_dirent_slab, x);
162}
163
164struct jffs2_raw_inode *jffs2_alloc_raw_inode(void)
165{
Artem B. Bityutskiyf538c962005-07-27 15:16:57 +0100166 struct jffs2_raw_inode *ret;
167 ret = kmem_cache_alloc(raw_inode_slab, GFP_KERNEL);
Artem B. Bityutskiy733802d2005-09-22 12:25:00 +0100168 dbg_memalloc("%p\n", ret);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700169 return ret;
170}
171
172void jffs2_free_raw_inode(struct jffs2_raw_inode *x)
173{
Artem B. Bityutskiy733802d2005-09-22 12:25:00 +0100174 dbg_memalloc("%p\n", x);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700175 kmem_cache_free(raw_inode_slab, x);
176}
177
178struct jffs2_tmp_dnode_info *jffs2_alloc_tmp_dnode_info(void)
179{
Artem B. Bityutskiyf538c962005-07-27 15:16:57 +0100180 struct jffs2_tmp_dnode_info *ret;
181 ret = kmem_cache_alloc(tmp_dnode_info_slab, GFP_KERNEL);
Artem B. Bityutskiy733802d2005-09-22 12:25:00 +0100182 dbg_memalloc("%p\n",
Artem B. Bityutskiyf538c962005-07-27 15:16:57 +0100183 ret);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700184 return ret;
185}
186
187void jffs2_free_tmp_dnode_info(struct jffs2_tmp_dnode_info *x)
188{
Artem B. Bityutskiy733802d2005-09-22 12:25:00 +0100189 dbg_memalloc("%p\n", x);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700190 kmem_cache_free(tmp_dnode_info_slab, x);
191}
192
193struct jffs2_raw_node_ref *jffs2_alloc_raw_node_ref(void)
194{
Artem B. Bityutskiyf538c962005-07-27 15:16:57 +0100195 struct jffs2_raw_node_ref *ret;
196 ret = kmem_cache_alloc(raw_node_ref_slab, GFP_KERNEL);
Artem B. Bityutskiy733802d2005-09-22 12:25:00 +0100197 dbg_memalloc("%p\n", ret);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700198 return ret;
199}
200
201void jffs2_free_raw_node_ref(struct jffs2_raw_node_ref *x)
202{
Artem B. Bityutskiy733802d2005-09-22 12:25:00 +0100203 dbg_memalloc("%p\n", x);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700204 kmem_cache_free(raw_node_ref_slab, x);
205}
206
207struct jffs2_node_frag *jffs2_alloc_node_frag(void)
208{
Artem B. Bityutskiyf538c962005-07-27 15:16:57 +0100209 struct jffs2_node_frag *ret;
210 ret = kmem_cache_alloc(node_frag_slab, GFP_KERNEL);
Artem B. Bityutskiy733802d2005-09-22 12:25:00 +0100211 dbg_memalloc("%p\n", ret);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700212 return ret;
213}
214
215void jffs2_free_node_frag(struct jffs2_node_frag *x)
216{
Artem B. Bityutskiy733802d2005-09-22 12:25:00 +0100217 dbg_memalloc("%p\n", x);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700218 kmem_cache_free(node_frag_slab, x);
219}
220
221struct jffs2_inode_cache *jffs2_alloc_inode_cache(void)
222{
Artem B. Bityutskiyf538c962005-07-27 15:16:57 +0100223 struct jffs2_inode_cache *ret;
224 ret = kmem_cache_alloc(inode_cache_slab, GFP_KERNEL);
Artem B. Bityutskiy733802d2005-09-22 12:25:00 +0100225 dbg_memalloc("%p\n", ret);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700226 return ret;
227}
228
229void jffs2_free_inode_cache(struct jffs2_inode_cache *x)
230{
Artem B. Bityutskiy733802d2005-09-22 12:25:00 +0100231 dbg_memalloc("%p\n", x);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700232 kmem_cache_free(inode_cache_slab, x);
233}
KaiGai Koheiaa98d7c2006-05-13 15:09:47 +0900234
235#ifdef CONFIG_JFFS2_FS_XATTR
236struct jffs2_xattr_datum *jffs2_alloc_xattr_datum(void)
237{
238 struct jffs2_xattr_datum *xd;
239 xd = kmem_cache_alloc(xattr_datum_cache, GFP_KERNEL);
240 dbg_memalloc("%p\n", xd);
241
242 memset(xd, 0, sizeof(struct jffs2_xattr_datum));
243 xd->class = RAWNODE_CLASS_XATTR_DATUM;
244 INIT_LIST_HEAD(&xd->xindex);
245 return xd;
246}
247
248void jffs2_free_xattr_datum(struct jffs2_xattr_datum *xd)
249{
250 dbg_memalloc("%p\n", xd);
251 kmem_cache_free(xattr_datum_cache, xd);
252}
253
254struct jffs2_xattr_ref *jffs2_alloc_xattr_ref(void)
255{
256 struct jffs2_xattr_ref *ref;
257 ref = kmem_cache_alloc(xattr_ref_cache, GFP_KERNEL);
258 dbg_memalloc("%p\n", ref);
259
260 memset(ref, 0, sizeof(struct jffs2_xattr_ref));
261 ref->class = RAWNODE_CLASS_XATTR_REF;
262 INIT_LIST_HEAD(&ref->ilist);
263 return ref;
264}
265
266void jffs2_free_xattr_ref(struct jffs2_xattr_ref *ref)
267{
268 dbg_memalloc("%p\n", ref);
269 kmem_cache_free(xattr_ref_cache, ref);
270}
271#endif