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git.proxmox.com Git - mirror_ubuntu-bionic-kernel.git/blob - fs/jffs2/malloc.c
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
);