e7df4524cd
With the new netfs read helper functions, we won't need a lot of this infrastructure as it handles the pagecache pages itself. Rip out the read handling for now, and much of the old infrastructure that deals in individual pages. The cookie handling is mostly unchanged, however. Signed-off-by: Jeff Layton <jlayton@kernel.org> Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
88 lines
2.0 KiB
C
88 lines
2.0 KiB
C
/* 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 (milosz@adfin.com)
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*/
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#ifndef _CEPH_CACHE_H
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#define _CEPH_CACHE_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 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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#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 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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#endif
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#endif /* _CEPH_CACHE_H */
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