1 /* SPDX-License-Identifier: GPL-2.0-only */
3 * Ceph cache definitions.
5 * Copyright (C) 2013 by Adfin Solutions, Inc. All Rights Reserved.
6 * Written by Milosz Tanski (milosz@adfin.com)
12 #ifdef CONFIG_CEPH_FSCACHE
14 extern struct fscache_netfs ceph_cache_netfs;
16 int ceph_fscache_register(void);
17 void ceph_fscache_unregister(void);
19 int ceph_fscache_register_fs(struct ceph_fs_client* fsc, struct fs_context *fc);
20 void ceph_fscache_unregister_fs(struct ceph_fs_client* fsc);
22 void ceph_fscache_register_inode_cookie(struct inode *inode);
23 void ceph_fscache_unregister_inode_cookie(struct ceph_inode_info* ci);
24 void ceph_fscache_file_set_cookie(struct inode *inode, struct file *filp);
25 void ceph_fscache_revalidate_cookie(struct ceph_inode_info *ci);
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,
32 void ceph_readpage_to_fscache(struct inode *inode, struct page *page);
33 void ceph_invalidate_fscache_page(struct inode* inode, struct page *page);
35 static inline void ceph_fscache_inode_init(struct ceph_inode_info *ci)
38 ci->i_fscache_gen = 0;
41 static inline void ceph_fscache_invalidate(struct inode *inode)
43 fscache_invalidate(ceph_inode(inode)->fscache);
46 static inline void ceph_fscache_uncache_page(struct inode *inode,
49 struct ceph_inode_info *ci = ceph_inode(inode);
50 return fscache_uncache_page(ci->fscache, page);
53 static inline int ceph_release_fscache_page(struct page *page, gfp_t gfp)
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);
60 static inline void ceph_fscache_readpage_cancel(struct inode *inode,
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);
68 static inline void ceph_fscache_readpages_cancel(struct inode *inode,
69 struct list_head *pages)
71 struct ceph_inode_info *ci = ceph_inode(inode);
72 return fscache_readpages_cancel(ci->fscache, pages);
75 static inline void ceph_disable_fscache_readpage(struct ceph_inode_info *ci)
77 ci->i_fscache_gen = ci->i_rdcache_gen - 1;
82 static inline int ceph_fscache_register(void)
87 static inline void ceph_fscache_unregister(void)
91 static inline int ceph_fscache_register_fs(struct ceph_fs_client* fsc,
92 struct fs_context *fc)
97 static inline void ceph_fscache_unregister_fs(struct ceph_fs_client* fsc)
101 static inline void ceph_fscache_inode_init(struct ceph_inode_info *ci)
105 static inline void ceph_fscache_register_inode_cookie(struct inode *inode)
109 static inline void ceph_fscache_unregister_inode_cookie(struct ceph_inode_info* ci)
113 static inline void ceph_fscache_file_set_cookie(struct inode *inode,
118 static inline void ceph_fscache_revalidate_cookie(struct ceph_inode_info *ci)
122 static inline void ceph_fscache_uncache_page(struct inode *inode,
127 static inline int ceph_readpage_from_fscache(struct inode* inode,
133 static inline int ceph_readpages_from_fscache(struct inode *inode,
134 struct address_space *mapping,
135 struct list_head *pages,
141 static inline void ceph_readpage_to_fscache(struct inode *inode,
146 static inline void ceph_fscache_invalidate(struct inode *inode)
150 static inline void ceph_invalidate_fscache_page(struct inode *inode,
155 static inline int ceph_release_fscache_page(struct page *page, gfp_t gfp)
160 static inline void ceph_fscache_readpage_cancel(struct inode *inode,
165 static inline void ceph_fscache_readpages_cancel(struct inode *inode,
166 struct list_head *pages)
170 static inline void ceph_disable_fscache_readpage(struct ceph_inode_info *ci)