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Commit | Line | Data |
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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 | ||
f0702876 JL |
12 | #include <linux/netfs.h> |
13 | ||
99ccbd22 | 14 | #ifdef CONFIG_CEPH_FSCACHE |
400e1286 | 15 | #include <linux/fscache.h> |
99ccbd22 | 16 | |
82995cc6 | 17 | int ceph_fscache_register_fs(struct ceph_fs_client* fsc, struct fs_context *fc); |
99ccbd22 MT |
18 | void ceph_fscache_unregister_fs(struct ceph_fs_client* fsc); |
19 | ||
46b59b2b | 20 | void ceph_fscache_register_inode_cookie(struct inode *inode); |
99ccbd22 | 21 | void ceph_fscache_unregister_inode_cookie(struct ceph_inode_info* ci); |
400e1286 JL |
22 | |
23 | void ceph_fscache_use_cookie(struct inode *inode, bool will_modify); | |
24 | void ceph_fscache_unuse_cookie(struct inode *inode, bool update); | |
25 | ||
26 | void ceph_fscache_update(struct inode *inode); | |
27 | void ceph_fscache_invalidate(struct inode *inode, bool dio_write); | |
99ccbd22 | 28 | |
f0702876 JL |
29 | static inline struct fscache_cookie *ceph_fscache_cookie(struct ceph_inode_info *ci) |
30 | { | |
e81fb419 | 31 | return netfs_i_cookie(&ci->netfs); |
f0702876 JL |
32 | } |
33 | ||
400e1286 | 34 | static inline void ceph_fscache_resize(struct inode *inode, loff_t to) |
99ccbd22 | 35 | { |
400e1286 JL |
36 | struct ceph_inode_info *ci = ceph_inode(inode); |
37 | struct fscache_cookie *cookie = ceph_fscache_cookie(ci); | |
38 | ||
39 | if (cookie) { | |
40 | ceph_fscache_use_cookie(inode, true); | |
41 | fscache_resize_cookie(cookie, to); | |
42 | ceph_fscache_unuse_cookie(inode, true); | |
43 | } | |
99ccbd22 MT |
44 | } |
45 | ||
c9c4ff12 | 46 | static inline int ceph_fscache_unpin_writeback(struct inode *inode, |
400e1286 | 47 | struct writeback_control *wbc) |
f0702876 | 48 | { |
c9c4ff12 | 49 | return netfs_unpin_writeback(inode, wbc); |
400e1286 JL |
50 | } |
51 | ||
c9c4ff12 | 52 | #define ceph_fscache_dirty_folio netfs_dirty_folio |
f0702876 | 53 | |
400e1286 | 54 | static inline bool ceph_is_cache_enabled(struct inode *inode) |
99ccbd22 | 55 | { |
400e1286 | 56 | return fscache_cookie_enabled(ceph_fscache_cookie(ceph_inode(inode))); |
99ccbd22 MT |
57 | } |
58 | ||
400e1286 | 59 | static inline void ceph_fscache_note_page_release(struct inode *inode) |
99ccbd22 | 60 | { |
400e1286 | 61 | struct ceph_inode_info *ci = ceph_inode(inode); |
99ccbd22 | 62 | |
400e1286 JL |
63 | fscache_note_page_release(ceph_fscache_cookie(ci)); |
64 | } | |
65 | #else /* CONFIG_CEPH_FSCACHE */ | |
82995cc6 DH |
66 | static inline int ceph_fscache_register_fs(struct ceph_fs_client* fsc, |
67 | struct fs_context *fc) | |
99ccbd22 MT |
68 | { |
69 | return 0; | |
70 | } | |
71 | ||
72 | static inline void ceph_fscache_unregister_fs(struct ceph_fs_client* fsc) | |
73 | { | |
74 | } | |
75 | ||
400e1286 | 76 | static inline void ceph_fscache_register_inode_cookie(struct inode *inode) |
f0702876 | 77 | { |
f0702876 JL |
78 | } |
79 | ||
400e1286 | 80 | static inline void ceph_fscache_unregister_inode_cookie(struct ceph_inode_info* ci) |
46b59b2b YZ |
81 | { |
82 | } | |
83 | ||
400e1286 | 84 | static inline void ceph_fscache_use_cookie(struct inode *inode, bool will_modify) |
46b59b2b YZ |
85 | { |
86 | } | |
87 | ||
400e1286 | 88 | static inline void ceph_fscache_unuse_cookie(struct inode *inode, bool update) |
99ccbd22 MT |
89 | { |
90 | } | |
91 | ||
400e1286 | 92 | static inline void ceph_fscache_update(struct inode *inode) |
99ccbd22 MT |
93 | { |
94 | } | |
95 | ||
400e1286 JL |
96 | static inline void ceph_fscache_invalidate(struct inode *inode, bool dio_write) |
97 | { | |
98 | } | |
99 | ||
100 | static inline struct fscache_cookie *ceph_fscache_cookie(struct ceph_inode_info *ci) | |
101 | { | |
102 | return NULL; | |
103 | } | |
104 | ||
105 | static inline void ceph_fscache_resize(struct inode *inode, loff_t to) | |
106 | { | |
107 | } | |
108 | ||
c9c4ff12 DH |
109 | static inline int ceph_fscache_unpin_writeback(struct inode *inode, |
110 | struct writeback_control *wbc) | |
400e1286 | 111 | { |
c9c4ff12 | 112 | return 0; |
400e1286 JL |
113 | } |
114 | ||
c9c4ff12 | 115 | #define ceph_fscache_dirty_folio filemap_dirty_folio |
400e1286 | 116 | |
f0702876 JL |
117 | static inline bool ceph_is_cache_enabled(struct inode *inode) |
118 | { | |
119 | return false; | |
120 | } | |
121 | ||
400e1286 JL |
122 | static inline void ceph_fscache_note_page_release(struct inode *inode) |
123 | { | |
124 | } | |
125 | #endif /* CONFIG_CEPH_FSCACHE */ | |
126 | ||
127 | #endif |