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148 lines
3.6 KiB
148 lines
3.6 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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#include <linux/fscache.h> |
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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_use_cookie(struct inode *inode, bool will_modify); |
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void ceph_fscache_unuse_cookie(struct inode *inode, bool update); |
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void ceph_fscache_update(struct inode *inode); |
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void ceph_fscache_invalidate(struct inode *inode, bool dio_write); |
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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 netfs_i_cookie(&ci->netfs); |
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} |
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static inline void ceph_fscache_resize(struct inode *inode, loff_t to) |
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{ |
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struct ceph_inode_info *ci = ceph_inode(inode); |
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struct fscache_cookie *cookie = ceph_fscache_cookie(ci); |
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if (cookie) { |
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ceph_fscache_use_cookie(inode, true); |
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fscache_resize_cookie(cookie, to); |
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ceph_fscache_unuse_cookie(inode, true); |
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} |
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} |
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static inline void ceph_fscache_unpin_writeback(struct inode *inode, |
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struct writeback_control *wbc) |
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{ |
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fscache_unpin_writeback(wbc, ceph_fscache_cookie(ceph_inode(inode))); |
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} |
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static inline int ceph_fscache_dirty_folio(struct address_space *mapping, |
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struct folio *folio) |
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{ |
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struct ceph_inode_info *ci = ceph_inode(mapping->host); |
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return fscache_dirty_folio(mapping, folio, ceph_fscache_cookie(ci)); |
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} |
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static inline int ceph_begin_cache_operation(struct netfs_io_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->cache_resources, cookie); |
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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 fscache_cookie_enabled(ceph_fscache_cookie(ceph_inode(inode))); |
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} |
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static inline void ceph_fscache_note_page_release(struct inode *inode) |
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{ |
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struct ceph_inode_info *ci = ceph_inode(inode); |
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fscache_note_page_release(ceph_fscache_cookie(ci)); |
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} |
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#else /* CONFIG_CEPH_FSCACHE */ |
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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_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_use_cookie(struct inode *inode, bool will_modify) |
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{ |
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} |
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static inline void ceph_fscache_unuse_cookie(struct inode *inode, bool update) |
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{ |
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} |
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static inline void ceph_fscache_update(struct inode *inode) |
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{ |
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} |
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static inline void ceph_fscache_invalidate(struct inode *inode, bool dio_write) |
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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_resize(struct inode *inode, loff_t to) |
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{ |
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} |
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static inline void ceph_fscache_unpin_writeback(struct inode *inode, |
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struct writeback_control *wbc) |
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{ |
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} |
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static inline int ceph_fscache_dirty_folio(struct address_space *mapping, |
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struct folio *folio) |
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{ |
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return filemap_dirty_folio(mapping, folio); |
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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_io_request *rreq) |
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{ |
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return -ENOBUFS; |
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} |
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static inline void ceph_fscache_note_page_release(struct inode *inode) |
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{ |
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} |
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#endif /* CONFIG_CEPH_FSCACHE */ |
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#endif
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