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123 lines
2.8 KiB
123 lines
2.8 KiB
/* SPDX-License-Identifier: GPL-2.0-only */ |
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/* |
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* Ceph cache definitions. |
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* |
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* Copyright (C) 2013 by Adfin Solutions, Inc. All Rights Reserved. |
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* Written by Milosz Tanski ([email protected]) |
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*/ |
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#ifndef _CEPH_CACHE_H |
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#define _CEPH_CACHE_H |
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#include <linux/netfs.h> |
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#ifdef CONFIG_CEPH_FSCACHE |
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extern struct fscache_netfs ceph_cache_netfs; |
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int ceph_fscache_register(void); |
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void ceph_fscache_unregister(void); |
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int ceph_fscache_register_fs(struct ceph_fs_client* fsc, struct fs_context *fc); |
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void ceph_fscache_unregister_fs(struct ceph_fs_client* fsc); |
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void ceph_fscache_register_inode_cookie(struct inode *inode); |
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void ceph_fscache_unregister_inode_cookie(struct ceph_inode_info* ci); |
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void ceph_fscache_file_set_cookie(struct inode *inode, struct file *filp); |
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void ceph_fscache_revalidate_cookie(struct ceph_inode_info *ci); |
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int ceph_readpage_from_fscache(struct inode *inode, struct page *page); |
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int ceph_readpages_from_fscache(struct inode *inode, |
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struct address_space *mapping, |
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struct list_head *pages, |
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unsigned *nr_pages); |
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static inline void ceph_fscache_inode_init(struct ceph_inode_info *ci) |
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{ |
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ci->fscache = NULL; |
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} |
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static inline struct fscache_cookie *ceph_fscache_cookie(struct ceph_inode_info *ci) |
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{ |
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return ci->fscache; |
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} |
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static inline void ceph_fscache_invalidate(struct inode *inode) |
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{ |
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fscache_invalidate(ceph_inode(inode)->fscache); |
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} |
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static inline bool ceph_is_cache_enabled(struct inode *inode) |
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{ |
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struct fscache_cookie *cookie = ceph_fscache_cookie(ceph_inode(inode)); |
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if (!cookie) |
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return false; |
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return fscache_cookie_enabled(cookie); |
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} |
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static inline int ceph_begin_cache_operation(struct netfs_read_request *rreq) |
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{ |
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struct fscache_cookie *cookie = ceph_fscache_cookie(ceph_inode(rreq->inode)); |
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return fscache_begin_read_operation(rreq, cookie); |
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} |
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#else |
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static inline int ceph_fscache_register(void) |
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{ |
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return 0; |
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} |
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static inline void ceph_fscache_unregister(void) |
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{ |
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} |
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static inline int ceph_fscache_register_fs(struct ceph_fs_client* fsc, |
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struct fs_context *fc) |
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{ |
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return 0; |
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} |
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static inline void ceph_fscache_unregister_fs(struct ceph_fs_client* fsc) |
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{ |
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} |
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static inline void ceph_fscache_inode_init(struct ceph_inode_info *ci) |
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{ |
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} |
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static inline struct fscache_cookie *ceph_fscache_cookie(struct ceph_inode_info *ci) |
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{ |
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return NULL; |
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} |
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static inline void ceph_fscache_register_inode_cookie(struct inode *inode) |
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{ |
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} |
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static inline void ceph_fscache_unregister_inode_cookie(struct ceph_inode_info* ci) |
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{ |
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} |
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static inline void ceph_fscache_file_set_cookie(struct inode *inode, |
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struct file *filp) |
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{ |
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} |
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static inline void ceph_fscache_invalidate(struct inode *inode) |
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{ |
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} |
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static inline bool ceph_is_cache_enabled(struct inode *inode) |
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{ |
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return false; |
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} |
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static inline int ceph_begin_cache_operation(struct netfs_read_request *rreq) |
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{ |
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return -ENOBUFS; |
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} |
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#endif |
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#endif /* _CEPH_CACHE_H */
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