2 * V9FS cache definitions.
4 * Copyright (C) 2009 by Abhishek Kulkarni <adkulkar@umail.iu.edu>
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2
8 * as published by the Free Software Foundation.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to:
17 * Free Software Foundation
18 * 51 Franklin Street, Fifth Floor
19 * Boston, MA 02111-1301 USA
24 #ifdef CONFIG_9P_FSCACHE
25 #include <linux/fscache.h>
26 #include <linux/spinlock.h>
28 extern struct fscache_netfs v9fs_cache_netfs
;
29 extern const struct fscache_cookie_def v9fs_cache_session_index_def
;
30 extern const struct fscache_cookie_def v9fs_cache_inode_index_def
;
32 extern void v9fs_cache_session_get_cookie(struct v9fs_session_info
*v9ses
);
33 extern void v9fs_cache_session_put_cookie(struct v9fs_session_info
*v9ses
);
35 extern void v9fs_cache_inode_get_cookie(struct inode
*inode
);
36 extern void v9fs_cache_inode_put_cookie(struct inode
*inode
);
37 extern void v9fs_cache_inode_flush_cookie(struct inode
*inode
);
38 extern void v9fs_cache_inode_set_cookie(struct inode
*inode
, struct file
*filp
);
39 extern void v9fs_cache_inode_reset_cookie(struct inode
*inode
);
41 extern int __v9fs_cache_register(void);
42 extern void __v9fs_cache_unregister(void);
44 extern int __v9fs_fscache_release_page(struct page
*page
, gfp_t gfp
);
45 extern void __v9fs_fscache_invalidate_page(struct page
*page
);
46 extern int __v9fs_readpage_from_fscache(struct inode
*inode
,
48 extern int __v9fs_readpages_from_fscache(struct inode
*inode
,
49 struct address_space
*mapping
,
50 struct list_head
*pages
,
52 extern void __v9fs_readpage_to_fscache(struct inode
*inode
, struct page
*page
);
53 extern void __v9fs_fscache_wait_on_page_write(struct inode
*inode
,
56 static inline int v9fs_fscache_release_page(struct page
*page
,
59 return __v9fs_fscache_release_page(page
, gfp
);
62 static inline void v9fs_fscache_invalidate_page(struct page
*page
)
64 __v9fs_fscache_invalidate_page(page
);
67 static inline int v9fs_readpage_from_fscache(struct inode
*inode
,
70 return __v9fs_readpage_from_fscache(inode
, page
);
73 static inline int v9fs_readpages_from_fscache(struct inode
*inode
,
74 struct address_space
*mapping
,
75 struct list_head
*pages
,
78 return __v9fs_readpages_from_fscache(inode
, mapping
, pages
,
82 static inline void v9fs_readpage_to_fscache(struct inode
*inode
,
85 if (PageFsCache(page
))
86 __v9fs_readpage_to_fscache(inode
, page
);
89 static inline void v9fs_uncache_page(struct inode
*inode
, struct page
*page
)
91 struct v9fs_inode
*v9inode
= V9FS_I(inode
);
92 fscache_uncache_page(v9inode
->fscache
, page
);
93 BUG_ON(PageFsCache(page
));
96 static inline void v9fs_fscache_wait_on_page_write(struct inode
*inode
,
99 return __v9fs_fscache_wait_on_page_write(inode
, page
);
102 #else /* CONFIG_9P_FSCACHE */
104 static inline int v9fs_fscache_release_page(struct page
*page
,
109 static inline void v9fs_fscache_invalidate_page(struct page
*page
) {}
111 static inline int v9fs_readpage_from_fscache(struct inode
*inode
,
117 static inline int v9fs_readpages_from_fscache(struct inode
*inode
,
118 struct address_space
*mapping
,
119 struct list_head
*pages
,
125 static inline void v9fs_readpage_to_fscache(struct inode
*inode
,
129 static inline void v9fs_uncache_page(struct inode
*inode
, struct page
*page
)
132 static inline void v9fs_fscache_wait_on_page_write(struct inode
*inode
,
138 #endif /* CONFIG_9P_FSCACHE */
139 #endif /* _9P_CACHE_H */