Commit | Line | Data |
---|---|---|
1f327613 | 1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
99ccbd22 MT |
2 | /* |
3 | * Ceph cache definitions. | |
4 | * | |
5 | * Copyright (C) 2013 by Adfin Solutions, Inc. All Rights Reserved. | |
6 | * Written by Milosz Tanski (milosz@adfin.com) | |
99ccbd22 MT |
7 | */ |
8 | ||
9 | #ifndef _CEPH_CACHE_H | |
10 | #define _CEPH_CACHE_H | |
11 | ||
12 | #ifdef CONFIG_CEPH_FSCACHE | |
13 | ||
971f0bde MT |
14 | extern struct fscache_netfs ceph_cache_netfs; |
15 | ||
99ccbd22 MT |
16 | int ceph_fscache_register(void); |
17 | void ceph_fscache_unregister(void); | |
18 | ||
19 | int ceph_fscache_register_fs(struct ceph_fs_client* fsc); | |
20 | void ceph_fscache_unregister_fs(struct ceph_fs_client* fsc); | |
21 | ||
46b59b2b | 22 | void ceph_fscache_register_inode_cookie(struct inode *inode); |
99ccbd22 | 23 | void ceph_fscache_unregister_inode_cookie(struct ceph_inode_info* ci); |
46b59b2b | 24 | void ceph_fscache_file_set_cookie(struct inode *inode, struct file *filp); |
f7f7e7a0 | 25 | void ceph_fscache_revalidate_cookie(struct ceph_inode_info *ci); |
99ccbd22 MT |
26 | |
27 | int ceph_readpage_from_fscache(struct inode *inode, struct page *page); | |
28 | int ceph_readpages_from_fscache(struct inode *inode, | |
29 | struct address_space *mapping, | |
30 | struct list_head *pages, | |
31 | unsigned *nr_pages); | |
32 | void ceph_readpage_to_fscache(struct inode *inode, struct page *page); | |
33 | void ceph_invalidate_fscache_page(struct inode* inode, struct page *page); | |
f7f7e7a0 YZ |
34 | |
35 | static inline void ceph_fscache_inode_init(struct ceph_inode_info *ci) | |
36 | { | |
37 | ci->fscache = NULL; | |
38 | ci->i_fscache_gen = 0; | |
39 | } | |
99ccbd22 MT |
40 | |
41 | static inline void ceph_fscache_invalidate(struct inode *inode) | |
42 | { | |
43 | fscache_invalidate(ceph_inode(inode)->fscache); | |
44 | } | |
45 | ||
d4d3aa38 MT |
46 | static inline void ceph_fscache_uncache_page(struct inode *inode, |
47 | struct page *page) | |
48 | { | |
49 | struct ceph_inode_info *ci = ceph_inode(inode); | |
50 | return fscache_uncache_page(ci->fscache, page); | |
51 | } | |
52 | ||
99ccbd22 MT |
53 | static inline int ceph_release_fscache_page(struct page *page, gfp_t gfp) |
54 | { | |
55 | struct inode* inode = page->mapping->host; | |
56 | struct ceph_inode_info *ci = ceph_inode(inode); | |
57 | return fscache_maybe_release_page(ci->fscache, page, gfp); | |
58 | } | |
59 | ||
3f42bc4b LW |
60 | static inline void ceph_fscache_readpage_cancel(struct inode *inode, |
61 | struct page *page) | |
62 | { | |
63 | struct ceph_inode_info *ci = ceph_inode(inode); | |
64 | if (fscache_cookie_valid(ci->fscache) && PageFsCache(page)) | |
65 | __fscache_uncache_page(ci->fscache, page); | |
66 | } | |
67 | ||
76be778b MT |
68 | static inline void ceph_fscache_readpages_cancel(struct inode *inode, |
69 | struct list_head *pages) | |
70 | { | |
71 | struct ceph_inode_info *ci = ceph_inode(inode); | |
72 | return fscache_readpages_cancel(ci->fscache, pages); | |
73 | } | |
74 | ||
f7f7e7a0 YZ |
75 | static inline void ceph_disable_fscache_readpage(struct ceph_inode_info *ci) |
76 | { | |
77 | ci->i_fscache_gen = ci->i_rdcache_gen - 1; | |
78 | } | |
79 | ||
99ccbd22 MT |
80 | #else |
81 | ||
82 | static inline int ceph_fscache_register(void) | |
83 | { | |
84 | return 0; | |
85 | } | |
86 | ||
87 | static inline void ceph_fscache_unregister(void) | |
88 | { | |
89 | } | |
90 | ||
91 | static inline int ceph_fscache_register_fs(struct ceph_fs_client* fsc) | |
92 | { | |
93 | return 0; | |
94 | } | |
95 | ||
96 | static inline void ceph_fscache_unregister_fs(struct ceph_fs_client* fsc) | |
97 | { | |
98 | } | |
99 | ||
100 | static inline void ceph_fscache_inode_init(struct ceph_inode_info *ci) | |
101 | { | |
102 | } | |
103 | ||
46b59b2b YZ |
104 | static inline void ceph_fscache_register_inode_cookie(struct inode *inode) |
105 | { | |
106 | } | |
107 | ||
108 | static inline void ceph_fscache_unregister_inode_cookie(struct ceph_inode_info* ci) | |
109 | { | |
110 | } | |
111 | ||
112 | static inline void ceph_fscache_file_set_cookie(struct inode *inode, | |
113 | struct file *filp) | |
99ccbd22 MT |
114 | { |
115 | } | |
116 | ||
f7f7e7a0 YZ |
117 | static inline void ceph_fscache_revalidate_cookie(struct ceph_inode_info *ci) |
118 | { | |
119 | } | |
120 | ||
d4d3aa38 MT |
121 | static inline void ceph_fscache_uncache_page(struct inode *inode, |
122 | struct page *pages) | |
99ccbd22 MT |
123 | { |
124 | } | |
125 | ||
126 | static inline int ceph_readpage_from_fscache(struct inode* inode, | |
127 | struct page *page) | |
128 | { | |
129 | return -ENOBUFS; | |
130 | } | |
131 | ||
132 | static inline int ceph_readpages_from_fscache(struct inode *inode, | |
133 | struct address_space *mapping, | |
134 | struct list_head *pages, | |
135 | unsigned *nr_pages) | |
136 | { | |
137 | return -ENOBUFS; | |
138 | } | |
139 | ||
140 | static inline void ceph_readpage_to_fscache(struct inode *inode, | |
141 | struct page *page) | |
142 | { | |
143 | } | |
144 | ||
145 | static inline void ceph_fscache_invalidate(struct inode *inode) | |
146 | { | |
147 | } | |
148 | ||
149 | static inline void ceph_invalidate_fscache_page(struct inode *inode, | |
150 | struct page *page) | |
151 | { | |
152 | } | |
153 | ||
154 | static inline int ceph_release_fscache_page(struct page *page, gfp_t gfp) | |
155 | { | |
156 | return 1; | |
157 | } | |
158 | ||
3f42bc4b LW |
159 | static inline void ceph_fscache_readpage_cancel(struct inode *inode, |
160 | struct page *page) | |
161 | { | |
162 | } | |
163 | ||
99ccbd22 MT |
164 | static inline void ceph_fscache_readpages_cancel(struct inode *inode, |
165 | struct list_head *pages) | |
166 | { | |
167 | } | |
168 | ||
f7f7e7a0 | 169 | static inline void ceph_disable_fscache_readpage(struct ceph_inode_info *ci) |
99ccbd22 MT |
170 | { |
171 | } | |
172 | ||
173 | #endif | |
174 | ||
175 | #endif |