diff options
Diffstat (limited to 'ANDROID_3.4.5/fs/nfs/fscache.h')
| -rw-r--r-- | ANDROID_3.4.5/fs/nfs/fscache.h | 222 |
1 files changed, 0 insertions, 222 deletions
diff --git a/ANDROID_3.4.5/fs/nfs/fscache.h b/ANDROID_3.4.5/fs/nfs/fscache.h deleted file mode 100644 index b9c572d0..00000000 --- a/ANDROID_3.4.5/fs/nfs/fscache.h +++ /dev/null @@ -1,222 +0,0 @@ -/* NFS filesystem cache interface definitions - * - * Copyright (C) 2008 Red Hat, Inc. All Rights Reserved. - * Written by David Howells (dhowells@redhat.com) - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public Licence - * as published by the Free Software Foundation; either version - * 2 of the Licence, or (at your option) any later version. - */ - -#ifndef _NFS_FSCACHE_H -#define _NFS_FSCACHE_H - -#include <linux/nfs_fs.h> -#include <linux/nfs_mount.h> -#include <linux/nfs4_mount.h> -#include <linux/fscache.h> - -#ifdef CONFIG_NFS_FSCACHE - -/* - * set of NFS FS-Cache objects that form a superblock key - */ -struct nfs_fscache_key { - struct rb_node node; - struct nfs_client *nfs_client; /* the server */ - - /* the elements of the unique key - as used by nfs_compare_super() and - * nfs_compare_mount_options() to distinguish superblocks */ - struct { - struct { - unsigned long s_flags; /* various flags - * (& NFS_MS_MASK) */ - } super; - - struct { - struct nfs_fsid fsid; - int flags; - unsigned int rsize; /* read size */ - unsigned int wsize; /* write size */ - unsigned int acregmin; /* attr cache timeouts */ - unsigned int acregmax; - unsigned int acdirmin; - unsigned int acdirmax; - } nfs_server; - - struct { - rpc_authflavor_t au_flavor; - } rpc_auth; - - /* uniquifier - can be used if nfs_server.flags includes - * NFS_MOUNT_UNSHARED */ - u8 uniq_len; - char uniquifier[0]; - } key; -}; - -/* - * fscache-index.c - */ -extern struct fscache_netfs nfs_fscache_netfs; -extern const struct fscache_cookie_def nfs_fscache_server_index_def; -extern const struct fscache_cookie_def nfs_fscache_super_index_def; -extern const struct fscache_cookie_def nfs_fscache_inode_object_def; - -extern int nfs_fscache_register(void); -extern void nfs_fscache_unregister(void); - -/* - * fscache.c - */ -extern void nfs_fscache_get_client_cookie(struct nfs_client *); -extern void nfs_fscache_release_client_cookie(struct nfs_client *); - -extern void nfs_fscache_get_super_cookie(struct super_block *, - const char *, - struct nfs_clone_mount *); -extern void nfs_fscache_release_super_cookie(struct super_block *); - -extern void nfs_fscache_init_inode_cookie(struct inode *); -extern void nfs_fscache_release_inode_cookie(struct inode *); -extern void nfs_fscache_zap_inode_cookie(struct inode *); -extern void nfs_fscache_set_inode_cookie(struct inode *, struct file *); -extern void nfs_fscache_reset_inode_cookie(struct inode *); - -extern void __nfs_fscache_invalidate_page(struct page *, struct inode *); -extern int nfs_fscache_release_page(struct page *, gfp_t); - -extern int __nfs_readpage_from_fscache(struct nfs_open_context *, - struct inode *, struct page *); -extern int __nfs_readpages_from_fscache(struct nfs_open_context *, - struct inode *, struct address_space *, - struct list_head *, unsigned *); -extern void __nfs_readpage_to_fscache(struct inode *, struct page *, int); - -/* - * wait for a page to complete writing to the cache - */ -static inline void nfs_fscache_wait_on_page_write(struct nfs_inode *nfsi, - struct page *page) -{ - if (PageFsCache(page)) - fscache_wait_on_page_write(nfsi->fscache, page); -} - -/* - * release the caching state associated with a page if undergoing complete page - * invalidation - */ -static inline void nfs_fscache_invalidate_page(struct page *page, - struct inode *inode) -{ - if (PageFsCache(page)) - __nfs_fscache_invalidate_page(page, inode); -} - -/* - * Retrieve a page from an inode data storage object. - */ -static inline int nfs_readpage_from_fscache(struct nfs_open_context *ctx, - struct inode *inode, - struct page *page) -{ - if (NFS_I(inode)->fscache) - return __nfs_readpage_from_fscache(ctx, inode, page); - return -ENOBUFS; -} - -/* - * Retrieve a set of pages from an inode data storage object. - */ -static inline int nfs_readpages_from_fscache(struct nfs_open_context *ctx, - struct inode *inode, - struct address_space *mapping, - struct list_head *pages, - unsigned *nr_pages) -{ - if (NFS_I(inode)->fscache) - return __nfs_readpages_from_fscache(ctx, inode, mapping, pages, - nr_pages); - return -ENOBUFS; -} - -/* - * Store a page newly fetched from the server in an inode data storage object - * in the cache. - */ -static inline void nfs_readpage_to_fscache(struct inode *inode, - struct page *page, - int sync) -{ - if (PageFsCache(page)) - __nfs_readpage_to_fscache(inode, page, sync); -} - -/* - * indicate the client caching state as readable text - */ -static inline const char *nfs_server_fscache_state(struct nfs_server *server) -{ - if (server->fscache && (server->options & NFS_OPTION_FSCACHE)) - return "yes"; - return "no "; -} - - -#else /* CONFIG_NFS_FSCACHE */ -static inline int nfs_fscache_register(void) { return 0; } -static inline void nfs_fscache_unregister(void) {} - -static inline void nfs_fscache_get_client_cookie(struct nfs_client *clp) {} -static inline void nfs_fscache_release_client_cookie(struct nfs_client *clp) {} - -static inline void nfs_fscache_get_super_cookie( - struct super_block *sb, - const char *uniq, - struct nfs_clone_mount *mntdata) -{ -} -static inline void nfs_fscache_release_super_cookie(struct super_block *sb) {} - -static inline void nfs_fscache_init_inode_cookie(struct inode *inode) {} -static inline void nfs_fscache_release_inode_cookie(struct inode *inode) {} -static inline void nfs_fscache_zap_inode_cookie(struct inode *inode) {} -static inline void nfs_fscache_set_inode_cookie(struct inode *inode, - struct file *filp) {} -static inline void nfs_fscache_reset_inode_cookie(struct inode *inode) {} - -static inline int nfs_fscache_release_page(struct page *page, gfp_t gfp) -{ - return 1; /* True: may release page */ -} -static inline void nfs_fscache_invalidate_page(struct page *page, - struct inode *inode) {} -static inline void nfs_fscache_wait_on_page_write(struct nfs_inode *nfsi, - struct page *page) {} - -static inline int nfs_readpage_from_fscache(struct nfs_open_context *ctx, - struct inode *inode, - struct page *page) -{ - return -ENOBUFS; -} -static inline int nfs_readpages_from_fscache(struct nfs_open_context *ctx, - struct inode *inode, - struct address_space *mapping, - struct list_head *pages, - unsigned *nr_pages) -{ - return -ENOBUFS; -} -static inline void nfs_readpage_to_fscache(struct inode *inode, - struct page *page, int sync) {} - -static inline const char *nfs_server_fscache_state(struct nfs_server *server) -{ - return "no "; -} - -#endif /* CONFIG_NFS_FSCACHE */ -#endif /* _NFS_FSCACHE_H */ |