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![David Howells](/assets/img/avatar_default.png)
Convert the ceph filesystem to the new internal mount API as the old one will be obsoleted and removed. This allows greater flexibility in communication of mount parameters between userspace, the VFS and the filesystem. See Documentation/filesystems/mount_api.txt for more information. [ Numerous string handling, leak and regression fixes; rbd conversion was particularly broken and had to be redone almost from scratch. ] Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: Jeff Layton <jlayton@kernel.org> Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
176 lines
4.2 KiB
C
176 lines
4.2 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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void ceph_readpage_to_fscache(struct inode *inode, struct page *page);
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void ceph_invalidate_fscache_page(struct inode* inode, struct page *page);
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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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ci->i_fscache_gen = 0;
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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 void ceph_fscache_uncache_page(struct inode *inode,
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struct page *page)
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{
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struct ceph_inode_info *ci = ceph_inode(inode);
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return fscache_uncache_page(ci->fscache, page);
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}
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static inline int ceph_release_fscache_page(struct page *page, gfp_t gfp)
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{
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struct inode* inode = page->mapping->host;
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struct ceph_inode_info *ci = ceph_inode(inode);
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return fscache_maybe_release_page(ci->fscache, page, gfp);
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}
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static inline void ceph_fscache_readpage_cancel(struct inode *inode,
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struct page *page)
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{
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struct ceph_inode_info *ci = ceph_inode(inode);
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if (fscache_cookie_valid(ci->fscache) && PageFsCache(page))
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__fscache_uncache_page(ci->fscache, page);
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}
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static inline void ceph_fscache_readpages_cancel(struct inode *inode,
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struct list_head *pages)
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{
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struct ceph_inode_info *ci = ceph_inode(inode);
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return fscache_readpages_cancel(ci->fscache, pages);
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}
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static inline void ceph_disable_fscache_readpage(struct ceph_inode_info *ci)
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{
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ci->i_fscache_gen = ci->i_rdcache_gen - 1;
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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_revalidate_cookie(struct ceph_inode_info *ci)
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{
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}
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static inline void ceph_fscache_uncache_page(struct inode *inode,
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struct page *pages)
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{
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}
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static inline int ceph_readpage_from_fscache(struct inode* inode,
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struct page *page)
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{
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return -ENOBUFS;
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}
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static inline 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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{
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return -ENOBUFS;
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}
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static inline void ceph_readpage_to_fscache(struct inode *inode,
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struct page *page)
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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 void ceph_invalidate_fscache_page(struct inode *inode,
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struct page *page)
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{
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}
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static inline int ceph_release_fscache_page(struct page *page, gfp_t gfp)
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{
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return 1;
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}
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static inline void ceph_fscache_readpage_cancel(struct inode *inode,
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struct page *page)
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{
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}
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static inline void ceph_fscache_readpages_cancel(struct inode *inode,
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struct list_head *pages)
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{
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}
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static inline void ceph_disable_fscache_readpage(struct ceph_inode_info *ci)
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{
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}
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#endif
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#endif
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