Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | * |
Artem B. Bityutskiy | 733802d | 2005-09-22 12:25:00 +0100 | [diff] [blame] | 10 | * $Id: malloc.c,v 1.30 2005/09/20 14:27:34 dedekind Exp $ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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; |
| 29 | |
| 30 | int __init jffs2_create_slab_caches(void) |
| 31 | { |
| 32 | full_dnode_slab = kmem_cache_create("jffs2_full_dnode", |
| 33 | sizeof(struct jffs2_full_dnode), |
Artem B. Bityutskiy | f538c96 | 2005-07-27 15:16:57 +0100 | [diff] [blame] | 34 | 0, 0, NULL, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 35 | if (!full_dnode_slab) |
| 36 | goto err; |
| 37 | |
| 38 | raw_dirent_slab = kmem_cache_create("jffs2_raw_dirent", |
| 39 | sizeof(struct jffs2_raw_dirent), |
Artem B. Bityutskiy | f538c96 | 2005-07-27 15:16:57 +0100 | [diff] [blame] | 40 | 0, 0, NULL, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 41 | if (!raw_dirent_slab) |
| 42 | goto err; |
| 43 | |
| 44 | raw_inode_slab = kmem_cache_create("jffs2_raw_inode", |
| 45 | sizeof(struct jffs2_raw_inode), |
Artem B. Bityutskiy | f538c96 | 2005-07-27 15:16:57 +0100 | [diff] [blame] | 46 | 0, 0, NULL, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 47 | if (!raw_inode_slab) |
| 48 | goto err; |
| 49 | |
| 50 | tmp_dnode_info_slab = kmem_cache_create("jffs2_tmp_dnode", |
| 51 | sizeof(struct jffs2_tmp_dnode_info), |
Artem B. Bityutskiy | f538c96 | 2005-07-27 15:16:57 +0100 | [diff] [blame] | 52 | 0, 0, NULL, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 53 | if (!tmp_dnode_info_slab) |
| 54 | goto err; |
| 55 | |
| 56 | raw_node_ref_slab = kmem_cache_create("jffs2_raw_node_ref", |
| 57 | sizeof(struct jffs2_raw_node_ref), |
Artem B. Bityutskiy | f538c96 | 2005-07-27 15:16:57 +0100 | [diff] [blame] | 58 | 0, 0, NULL, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 59 | if (!raw_node_ref_slab) |
| 60 | goto err; |
| 61 | |
| 62 | node_frag_slab = kmem_cache_create("jffs2_node_frag", |
| 63 | sizeof(struct jffs2_node_frag), |
Artem B. Bityutskiy | f538c96 | 2005-07-27 15:16:57 +0100 | [diff] [blame] | 64 | 0, 0, NULL, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 65 | if (!node_frag_slab) |
| 66 | goto err; |
| 67 | |
| 68 | inode_cache_slab = kmem_cache_create("jffs2_inode_cache", |
| 69 | sizeof(struct jffs2_inode_cache), |
Artem B. Bityutskiy | f538c96 | 2005-07-27 15:16:57 +0100 | [diff] [blame] | 70 | 0, 0, NULL, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 71 | if (inode_cache_slab) |
| 72 | return 0; |
| 73 | err: |
| 74 | jffs2_destroy_slab_caches(); |
| 75 | return -ENOMEM; |
| 76 | } |
| 77 | |
| 78 | void jffs2_destroy_slab_caches(void) |
| 79 | { |
| 80 | if(full_dnode_slab) |
| 81 | kmem_cache_destroy(full_dnode_slab); |
| 82 | if(raw_dirent_slab) |
| 83 | kmem_cache_destroy(raw_dirent_slab); |
| 84 | if(raw_inode_slab) |
| 85 | kmem_cache_destroy(raw_inode_slab); |
| 86 | if(tmp_dnode_info_slab) |
| 87 | kmem_cache_destroy(tmp_dnode_info_slab); |
| 88 | if(raw_node_ref_slab) |
| 89 | kmem_cache_destroy(raw_node_ref_slab); |
| 90 | if(node_frag_slab) |
| 91 | kmem_cache_destroy(node_frag_slab); |
| 92 | if(inode_cache_slab) |
| 93 | kmem_cache_destroy(inode_cache_slab); |
| 94 | } |
| 95 | |
| 96 | struct jffs2_full_dirent *jffs2_alloc_full_dirent(int namesize) |
| 97 | { |
Artem B. Bityutskiy | f538c96 | 2005-07-27 15:16:57 +0100 | [diff] [blame] | 98 | struct jffs2_full_dirent *ret; |
| 99 | ret = kmalloc(sizeof(struct jffs2_full_dirent) + namesize, GFP_KERNEL); |
Artem B. Bityutskiy | 733802d | 2005-09-22 12:25:00 +0100 | [diff] [blame] | 100 | dbg_memalloc("%p\n", ret); |
Artem B. Bityutskiy | f538c96 | 2005-07-27 15:16:57 +0100 | [diff] [blame] | 101 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 102 | } |
| 103 | |
| 104 | void jffs2_free_full_dirent(struct jffs2_full_dirent *x) |
| 105 | { |
Artem B. Bityutskiy | 733802d | 2005-09-22 12:25:00 +0100 | [diff] [blame] | 106 | dbg_memalloc("%p\n", x); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 107 | kfree(x); |
| 108 | } |
| 109 | |
| 110 | struct jffs2_full_dnode *jffs2_alloc_full_dnode(void) |
| 111 | { |
Artem B. Bityutskiy | f538c96 | 2005-07-27 15:16:57 +0100 | [diff] [blame] | 112 | struct jffs2_full_dnode *ret; |
| 113 | ret = kmem_cache_alloc(full_dnode_slab, GFP_KERNEL); |
Artem B. Bityutskiy | 733802d | 2005-09-22 12:25:00 +0100 | [diff] [blame] | 114 | dbg_memalloc("%p\n", ret); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 115 | return ret; |
| 116 | } |
| 117 | |
| 118 | void jffs2_free_full_dnode(struct jffs2_full_dnode *x) |
| 119 | { |
Artem B. Bityutskiy | 733802d | 2005-09-22 12:25:00 +0100 | [diff] [blame] | 120 | dbg_memalloc("%p\n", x); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 121 | kmem_cache_free(full_dnode_slab, x); |
| 122 | } |
| 123 | |
| 124 | struct jffs2_raw_dirent *jffs2_alloc_raw_dirent(void) |
| 125 | { |
Artem B. Bityutskiy | f538c96 | 2005-07-27 15:16:57 +0100 | [diff] [blame] | 126 | struct jffs2_raw_dirent *ret; |
| 127 | ret = kmem_cache_alloc(raw_dirent_slab, GFP_KERNEL); |
Artem B. Bityutskiy | 733802d | 2005-09-22 12:25:00 +0100 | [diff] [blame] | 128 | dbg_memalloc("%p\n", ret); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 129 | return ret; |
| 130 | } |
| 131 | |
| 132 | void jffs2_free_raw_dirent(struct jffs2_raw_dirent *x) |
| 133 | { |
Artem B. Bityutskiy | 733802d | 2005-09-22 12:25:00 +0100 | [diff] [blame] | 134 | dbg_memalloc("%p\n", x); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 135 | kmem_cache_free(raw_dirent_slab, x); |
| 136 | } |
| 137 | |
| 138 | struct jffs2_raw_inode *jffs2_alloc_raw_inode(void) |
| 139 | { |
Artem B. Bityutskiy | f538c96 | 2005-07-27 15:16:57 +0100 | [diff] [blame] | 140 | struct jffs2_raw_inode *ret; |
| 141 | ret = kmem_cache_alloc(raw_inode_slab, GFP_KERNEL); |
Artem B. Bityutskiy | 733802d | 2005-09-22 12:25:00 +0100 | [diff] [blame] | 142 | dbg_memalloc("%p\n", ret); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 143 | return ret; |
| 144 | } |
| 145 | |
| 146 | void jffs2_free_raw_inode(struct jffs2_raw_inode *x) |
| 147 | { |
Artem B. Bityutskiy | 733802d | 2005-09-22 12:25:00 +0100 | [diff] [blame] | 148 | dbg_memalloc("%p\n", x); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 149 | kmem_cache_free(raw_inode_slab, x); |
| 150 | } |
| 151 | |
| 152 | struct jffs2_tmp_dnode_info *jffs2_alloc_tmp_dnode_info(void) |
| 153 | { |
Artem B. Bityutskiy | f538c96 | 2005-07-27 15:16:57 +0100 | [diff] [blame] | 154 | struct jffs2_tmp_dnode_info *ret; |
| 155 | ret = kmem_cache_alloc(tmp_dnode_info_slab, GFP_KERNEL); |
Artem B. Bityutskiy | 733802d | 2005-09-22 12:25:00 +0100 | [diff] [blame] | 156 | dbg_memalloc("%p\n", |
Artem B. Bityutskiy | f538c96 | 2005-07-27 15:16:57 +0100 | [diff] [blame] | 157 | ret); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 158 | return ret; |
| 159 | } |
| 160 | |
| 161 | void jffs2_free_tmp_dnode_info(struct jffs2_tmp_dnode_info *x) |
| 162 | { |
Artem B. Bityutskiy | 733802d | 2005-09-22 12:25:00 +0100 | [diff] [blame] | 163 | dbg_memalloc("%p\n", x); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 164 | kmem_cache_free(tmp_dnode_info_slab, x); |
| 165 | } |
| 166 | |
| 167 | struct jffs2_raw_node_ref *jffs2_alloc_raw_node_ref(void) |
| 168 | { |
Artem B. Bityutskiy | f538c96 | 2005-07-27 15:16:57 +0100 | [diff] [blame] | 169 | struct jffs2_raw_node_ref *ret; |
| 170 | ret = kmem_cache_alloc(raw_node_ref_slab, GFP_KERNEL); |
Artem B. Bityutskiy | 733802d | 2005-09-22 12:25:00 +0100 | [diff] [blame] | 171 | dbg_memalloc("%p\n", ret); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 172 | return ret; |
| 173 | } |
| 174 | |
| 175 | void jffs2_free_raw_node_ref(struct jffs2_raw_node_ref *x) |
| 176 | { |
Artem B. Bityutskiy | 733802d | 2005-09-22 12:25:00 +0100 | [diff] [blame] | 177 | dbg_memalloc("%p\n", x); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 178 | kmem_cache_free(raw_node_ref_slab, x); |
| 179 | } |
| 180 | |
| 181 | struct jffs2_node_frag *jffs2_alloc_node_frag(void) |
| 182 | { |
Artem B. Bityutskiy | f538c96 | 2005-07-27 15:16:57 +0100 | [diff] [blame] | 183 | struct jffs2_node_frag *ret; |
| 184 | ret = kmem_cache_alloc(node_frag_slab, GFP_KERNEL); |
Artem B. Bityutskiy | 733802d | 2005-09-22 12:25:00 +0100 | [diff] [blame] | 185 | dbg_memalloc("%p\n", ret); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 186 | return ret; |
| 187 | } |
| 188 | |
| 189 | void jffs2_free_node_frag(struct jffs2_node_frag *x) |
| 190 | { |
Artem B. Bityutskiy | 733802d | 2005-09-22 12:25:00 +0100 | [diff] [blame] | 191 | dbg_memalloc("%p\n", x); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 192 | kmem_cache_free(node_frag_slab, x); |
| 193 | } |
| 194 | |
| 195 | struct jffs2_inode_cache *jffs2_alloc_inode_cache(void) |
| 196 | { |
Artem B. Bityutskiy | f538c96 | 2005-07-27 15:16:57 +0100 | [diff] [blame] | 197 | struct jffs2_inode_cache *ret; |
| 198 | ret = kmem_cache_alloc(inode_cache_slab, GFP_KERNEL); |
Artem B. Bityutskiy | 733802d | 2005-09-22 12:25:00 +0100 | [diff] [blame] | 199 | dbg_memalloc("%p\n", ret); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 200 | return ret; |
| 201 | } |
| 202 | |
| 203 | void jffs2_free_inode_cache(struct jffs2_inode_cache *x) |
| 204 | { |
Artem B. Bityutskiy | 733802d | 2005-09-22 12:25:00 +0100 | [diff] [blame] | 205 | dbg_memalloc("%p\n", x); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 206 | kmem_cache_free(inode_cache_slab, x); |
| 207 | } |