]>
git.proxmox.com Git - mirror_ubuntu-artful-kernel.git/blob - fs/aufs/module.h
2 * Copyright (C) 2005-2017 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, see <http://www.gnu.org/licenses/>.
19 * module initialization and module-global
22 #ifndef __AUFS_MODULE_H__
23 #define __AUFS_MODULE_H__
27 #include <linux/slab.h>
32 /* module parameters */
33 extern int sysaufs_brs
;
34 extern bool au_userns
;
36 /* ---------------------------------------------------------------------- */
38 extern int au_dir_roflags
;
40 void *au_krealloc(void *p
, unsigned int new_sz
, gfp_t gfp
, int may_shrink
);
41 void *au_kzrealloc(void *p
, unsigned int nused
, unsigned int new_sz
, gfp_t gfp
,
44 static inline int au_kmidx_sub(size_t sz
, size_t new_sz
)
47 return kmalloc_index(sz
) - kmalloc_index(new_sz
);
49 return -1; /* SLOB is untested */
53 int au_seq_path(struct seq_file
*seq
, struct path
*path
);
57 int __init
au_procfs_init(void);
58 void au_procfs_fin(void);
60 AuStubInt0(au_procfs_init
, void);
61 AuStubVoid(au_procfs_fin
, void);
64 /* ---------------------------------------------------------------------- */
73 AuCache_HNOTIFY
, /* must be last */
77 extern struct kmem_cache
*au_cache
[AuCache_Last
];
79 #define AuCacheFlags (SLAB_RECLAIM_ACCOUNT | SLAB_MEM_SPREAD)
80 #define AuCache(type) KMEM_CACHE(type, AuCacheFlags)
81 #define AuCacheCtor(type, ctor) \
82 kmem_cache_create(#type, sizeof(struct type), \
83 __alignof__(struct type), AuCacheFlags, ctor)
85 #define AuCacheFuncs(name, index) \
86 static inline struct au_##name *au_cache_alloc_##name(void) \
87 { return kmem_cache_alloc(au_cache[AuCache_##index], GFP_NOFS); } \
88 static inline void au_cache_free_##name(struct au_##name *p) \
89 { kmem_cache_free(au_cache[AuCache_##index], p); }
91 AuCacheFuncs(dinfo
, DINFO
);
92 AuCacheFuncs(icntnr
, ICNTNR
);
93 AuCacheFuncs(finfo
, FINFO
);
94 AuCacheFuncs(vdir
, VDIR
);
95 AuCacheFuncs(vdir_dehstr
, DEHSTR
);
96 #ifdef CONFIG_AUFS_HNOTIFY
97 AuCacheFuncs(hnotify
, HNOTIFY
);
100 #endif /* __KERNEL__ */
101 #endif /* __AUFS_MODULE_H__ */