Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
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 | * | |
182ec4ee | 10 | * $Id: malloc.c,v 1.31 2005/11/07 11:14:40 gleixner Exp $ |
1da177e4 LT |
11 | * |
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 | ||
1da177e4 LT |
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; | |
aa98d7cf KK |
29 | #ifdef CONFIG_JFFS2_FS_XATTR |
30 | static kmem_cache_t *xattr_datum_cache; | |
31 | static kmem_cache_t *xattr_ref_cache; | |
32 | #endif | |
1da177e4 LT |
33 | |
34 | int __init jffs2_create_slab_caches(void) | |
35 | { | |
182ec4ee | 36 | full_dnode_slab = kmem_cache_create("jffs2_full_dnode", |
1da177e4 | 37 | sizeof(struct jffs2_full_dnode), |
f538c96b | 38 | 0, 0, NULL, NULL); |
1da177e4 LT |
39 | if (!full_dnode_slab) |
40 | goto err; | |
41 | ||
42 | raw_dirent_slab = kmem_cache_create("jffs2_raw_dirent", | |
43 | sizeof(struct jffs2_raw_dirent), | |
f538c96b | 44 | 0, 0, NULL, NULL); |
1da177e4 LT |
45 | if (!raw_dirent_slab) |
46 | goto err; | |
47 | ||
48 | raw_inode_slab = kmem_cache_create("jffs2_raw_inode", | |
49 | sizeof(struct jffs2_raw_inode), | |
f538c96b | 50 | 0, 0, NULL, NULL); |
1da177e4 LT |
51 | 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), | |
f538c96b | 56 | 0, 0, NULL, NULL); |
1da177e4 LT |
57 | 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), | |
f538c96b | 62 | 0, 0, NULL, NULL); |
1da177e4 LT |
63 | 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), | |
f538c96b | 68 | 0, 0, NULL, NULL); |
1da177e4 LT |
69 | if (!node_frag_slab) |
70 | goto err; | |
71 | ||
72 | inode_cache_slab = kmem_cache_create("jffs2_inode_cache", | |
73 | sizeof(struct jffs2_inode_cache), | |
f538c96b | 74 | 0, 0, NULL, NULL); |
aa98d7cf KK |
75 | 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; | |
1da177e4 LT |
93 | err: |
94 | jffs2_destroy_slab_caches(); | |
95 | return -ENOMEM; | |
96 | } | |
97 | ||
98 | void 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); | |
aa98d7cf KK |
114 | #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 | |
1da177e4 LT |
120 | } |
121 | ||
122 | struct jffs2_full_dirent *jffs2_alloc_full_dirent(int namesize) | |
123 | { | |
f538c96b AB |
124 | struct jffs2_full_dirent *ret; |
125 | ret = kmalloc(sizeof(struct jffs2_full_dirent) + namesize, GFP_KERNEL); | |
733802d9 | 126 | dbg_memalloc("%p\n", ret); |
f538c96b | 127 | return ret; |
1da177e4 LT |
128 | } |
129 | ||
130 | void jffs2_free_full_dirent(struct jffs2_full_dirent *x) | |
131 | { | |
733802d9 | 132 | dbg_memalloc("%p\n", x); |
1da177e4 LT |
133 | kfree(x); |
134 | } | |
135 | ||
136 | struct jffs2_full_dnode *jffs2_alloc_full_dnode(void) | |
137 | { | |
f538c96b AB |
138 | struct jffs2_full_dnode *ret; |
139 | ret = kmem_cache_alloc(full_dnode_slab, GFP_KERNEL); | |
733802d9 | 140 | dbg_memalloc("%p\n", ret); |
1da177e4 LT |
141 | return ret; |
142 | } | |
143 | ||
144 | void jffs2_free_full_dnode(struct jffs2_full_dnode *x) | |
145 | { | |
733802d9 | 146 | dbg_memalloc("%p\n", x); |
1da177e4 LT |
147 | kmem_cache_free(full_dnode_slab, x); |
148 | } | |
149 | ||
150 | struct jffs2_raw_dirent *jffs2_alloc_raw_dirent(void) | |
151 | { | |
f538c96b AB |
152 | struct jffs2_raw_dirent *ret; |
153 | ret = kmem_cache_alloc(raw_dirent_slab, GFP_KERNEL); | |
733802d9 | 154 | dbg_memalloc("%p\n", ret); |
1da177e4 LT |
155 | return ret; |
156 | } | |
157 | ||
158 | void jffs2_free_raw_dirent(struct jffs2_raw_dirent *x) | |
159 | { | |
733802d9 | 160 | dbg_memalloc("%p\n", x); |
1da177e4 LT |
161 | kmem_cache_free(raw_dirent_slab, x); |
162 | } | |
163 | ||
164 | struct jffs2_raw_inode *jffs2_alloc_raw_inode(void) | |
165 | { | |
f538c96b AB |
166 | struct jffs2_raw_inode *ret; |
167 | ret = kmem_cache_alloc(raw_inode_slab, GFP_KERNEL); | |
733802d9 | 168 | dbg_memalloc("%p\n", ret); |
1da177e4 LT |
169 | return ret; |
170 | } | |
171 | ||
172 | void jffs2_free_raw_inode(struct jffs2_raw_inode *x) | |
173 | { | |
733802d9 | 174 | dbg_memalloc("%p\n", x); |
1da177e4 LT |
175 | kmem_cache_free(raw_inode_slab, x); |
176 | } | |
177 | ||
178 | struct jffs2_tmp_dnode_info *jffs2_alloc_tmp_dnode_info(void) | |
179 | { | |
f538c96b AB |
180 | struct jffs2_tmp_dnode_info *ret; |
181 | ret = kmem_cache_alloc(tmp_dnode_info_slab, GFP_KERNEL); | |
733802d9 | 182 | dbg_memalloc("%p\n", |
f538c96b | 183 | ret); |
1da177e4 LT |
184 | return ret; |
185 | } | |
186 | ||
187 | void jffs2_free_tmp_dnode_info(struct jffs2_tmp_dnode_info *x) | |
188 | { | |
733802d9 | 189 | dbg_memalloc("%p\n", x); |
1da177e4 LT |
190 | kmem_cache_free(tmp_dnode_info_slab, x); |
191 | } | |
192 | ||
046b8b98 DW |
193 | int jffs2_prealloc_raw_node_refs(struct jffs2_sb_info *c, |
194 | struct jffs2_eraseblock *jeb, int nr) | |
2f785402 DW |
195 | { |
196 | struct jffs2_raw_node_ref *p = c->refs; | |
197 | ||
198 | dbg_memalloc("%d\n", nr); | |
199 | ||
200 | while (nr && p) { | |
201 | p = p->next_in_ino; | |
202 | nr--; | |
203 | } | |
204 | while (nr) { | |
205 | p = __jffs2_alloc_raw_node_ref(); | |
206 | if (!p) | |
207 | return -ENOMEM; | |
208 | p->next_in_ino = c->refs; | |
209 | c->refs = p; | |
210 | nr--; | |
211 | } | |
212 | c->reserved_refs = nr; | |
213 | return 0; | |
214 | } | |
215 | ||
216 | struct jffs2_raw_node_ref *__jffs2_alloc_raw_node_ref(void) | |
1da177e4 | 217 | { |
f538c96b AB |
218 | struct jffs2_raw_node_ref *ret; |
219 | ret = kmem_cache_alloc(raw_node_ref_slab, GFP_KERNEL); | |
733802d9 | 220 | dbg_memalloc("%p\n", ret); |
1da177e4 LT |
221 | return ret; |
222 | } | |
223 | ||
2f785402 | 224 | void __jffs2_free_raw_node_ref(struct jffs2_raw_node_ref *x) |
1da177e4 | 225 | { |
733802d9 | 226 | dbg_memalloc("%p\n", x); |
1da177e4 LT |
227 | kmem_cache_free(raw_node_ref_slab, x); |
228 | } | |
229 | ||
230 | struct jffs2_node_frag *jffs2_alloc_node_frag(void) | |
231 | { | |
f538c96b AB |
232 | struct jffs2_node_frag *ret; |
233 | ret = kmem_cache_alloc(node_frag_slab, GFP_KERNEL); | |
733802d9 | 234 | dbg_memalloc("%p\n", ret); |
1da177e4 LT |
235 | return ret; |
236 | } | |
237 | ||
238 | void jffs2_free_node_frag(struct jffs2_node_frag *x) | |
239 | { | |
733802d9 | 240 | dbg_memalloc("%p\n", x); |
1da177e4 LT |
241 | kmem_cache_free(node_frag_slab, x); |
242 | } | |
243 | ||
244 | struct jffs2_inode_cache *jffs2_alloc_inode_cache(void) | |
245 | { | |
f538c96b AB |
246 | struct jffs2_inode_cache *ret; |
247 | ret = kmem_cache_alloc(inode_cache_slab, GFP_KERNEL); | |
733802d9 | 248 | dbg_memalloc("%p\n", ret); |
1da177e4 LT |
249 | return ret; |
250 | } | |
251 | ||
252 | void jffs2_free_inode_cache(struct jffs2_inode_cache *x) | |
253 | { | |
733802d9 | 254 | dbg_memalloc("%p\n", x); |
1da177e4 LT |
255 | kmem_cache_free(inode_cache_slab, x); |
256 | } | |
aa98d7cf KK |
257 | |
258 | #ifdef CONFIG_JFFS2_FS_XATTR | |
259 | struct jffs2_xattr_datum *jffs2_alloc_xattr_datum(void) | |
260 | { | |
261 | struct jffs2_xattr_datum *xd; | |
262 | xd = kmem_cache_alloc(xattr_datum_cache, GFP_KERNEL); | |
263 | dbg_memalloc("%p\n", xd); | |
264 | ||
265 | memset(xd, 0, sizeof(struct jffs2_xattr_datum)); | |
266 | xd->class = RAWNODE_CLASS_XATTR_DATUM; | |
267 | INIT_LIST_HEAD(&xd->xindex); | |
268 | return xd; | |
269 | } | |
270 | ||
271 | void jffs2_free_xattr_datum(struct jffs2_xattr_datum *xd) | |
272 | { | |
273 | dbg_memalloc("%p\n", xd); | |
274 | kmem_cache_free(xattr_datum_cache, xd); | |
275 | } | |
276 | ||
277 | struct jffs2_xattr_ref *jffs2_alloc_xattr_ref(void) | |
278 | { | |
279 | struct jffs2_xattr_ref *ref; | |
280 | ref = kmem_cache_alloc(xattr_ref_cache, GFP_KERNEL); | |
281 | dbg_memalloc("%p\n", ref); | |
282 | ||
283 | memset(ref, 0, sizeof(struct jffs2_xattr_ref)); | |
284 | ref->class = RAWNODE_CLASS_XATTR_REF; | |
aa98d7cf KK |
285 | return ref; |
286 | } | |
287 | ||
288 | void jffs2_free_xattr_ref(struct jffs2_xattr_ref *ref) | |
289 | { | |
290 | dbg_memalloc("%p\n", ref); | |
291 | kmem_cache_free(xattr_ref_cache, ref); | |
292 | } | |
293 | #endif |