2 * Copyright (C) 2005-2013 Junjiro R. Okajima
4 * This program, aufs is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
20 * module initialization and module-global
23 #ifndef __AUFS_MODULE_H__
24 #define __AUFS_MODULE_H__
28 #include <linux/slab.h>
33 /* module parameters */
34 extern int sysaufs_brs;
36 /* ---------------------------------------------------------------------- */
38 extern int au_dir_roflags;
54 extern struct lock_class_key au_lc_key[AuLcKey_Last];
56 void *au_kzrealloc(void *p, unsigned int nused, unsigned int new_sz, gfp_t gfp);
57 int au_seq_path(struct seq_file *seq, struct path *path);
61 int __init au_procfs_init(void);
62 void au_procfs_fin(void);
64 AuStubInt0(au_procfs_init, void);
65 AuStubVoid(au_procfs_fin, void);
68 /* ---------------------------------------------------------------------- */
77 AuCache_HNOTIFY, /* must be last */
81 #define AuCacheFlags (SLAB_RECLAIM_ACCOUNT | SLAB_MEM_SPREAD)
82 #define AuCache(type) KMEM_CACHE(type, AuCacheFlags)
83 #define AuCacheCtor(type, ctor) \
84 kmem_cache_create(#type, sizeof(struct type), \
85 __alignof__(struct type), AuCacheFlags, ctor)
87 extern struct kmem_cache *au_cachep[];
89 #define AuCacheFuncs(name, index) \
90 static inline struct au_##name *au_cache_alloc_##name(void) \
91 { return kmem_cache_alloc(au_cachep[AuCache_##index], GFP_NOFS); } \
92 static inline void au_cache_free_##name(struct au_##name *p) \
93 { kmem_cache_free(au_cachep[AuCache_##index], p); }
95 AuCacheFuncs(dinfo, DINFO);
96 AuCacheFuncs(icntnr, ICNTNR);
97 AuCacheFuncs(finfo, FINFO);
98 AuCacheFuncs(vdir, VDIR);
99 AuCacheFuncs(vdir_dehstr, DEHSTR);
100 #ifdef CONFIG_AUFS_HNOTIFY
101 AuCacheFuncs(hnotify, HNOTIFY);
104 #endif /* __KERNEL__ */
105 #endif /* __AUFS_MODULE_H__ */