From 56698236e1294848c63d4768673865ae5a9c69e0 Mon Sep 17 00:00:00 2001 From: Suresh Jayaraman Date: Mon, 5 Jul 2010 18:13:25 +0530 Subject: cifs: read pages from FS-Cache Read pages from a FS-Cache data storage object into a CIFS inode. Signed-off-by: Suresh Jayaraman Acked-by: David Howells Signed-off-by: Steve French --- fs/cifs/fscache.h | 40 +++++++++++++++++++++++++++++++++++++++- 1 file changed, 39 insertions(+), 1 deletion(-) (limited to 'fs/cifs/fscache.h') diff --git a/fs/cifs/fscache.h b/fs/cifs/fscache.h index 1a00d70bca97..79164c66797e 100644 --- a/fs/cifs/fscache.h +++ b/fs/cifs/fscache.h @@ -32,7 +32,6 @@ extern const struct fscache_cookie_def cifs_fscache_server_index_def; extern const struct fscache_cookie_def cifs_fscache_super_index_def; extern const struct fscache_cookie_def cifs_fscache_inode_object_def; - extern int cifs_fscache_register(void); extern void cifs_fscache_unregister(void); @@ -50,6 +49,11 @@ extern void cifs_fscache_reset_inode_cookie(struct inode *); extern void __cifs_fscache_invalidate_page(struct page *, struct inode *); extern int cifs_fscache_release_page(struct page *page, gfp_t gfp); +extern int __cifs_readpage_from_fscache(struct inode *, struct page *); +extern int __cifs_readpages_from_fscache(struct inode *, + struct address_space *, + struct list_head *, + unsigned *); extern void __cifs_readpage_to_fscache(struct inode *, struct page *); @@ -60,6 +64,26 @@ static inline void cifs_fscache_invalidate_page(struct page *page, __cifs_fscache_invalidate_page(page, inode); } +static inline int cifs_readpage_from_fscache(struct inode *inode, + struct page *page) +{ + if (CIFS_I(inode)->fscache) + return __cifs_readpage_from_fscache(inode, page); + + return -ENOBUFS; +} + +static inline int cifs_readpages_from_fscache(struct inode *inode, + struct address_space *mapping, + struct list_head *pages, + unsigned *nr_pages) +{ + if (CIFS_I(inode)->fscache) + return __cifs_readpages_from_fscache(inode, mapping, pages, + nr_pages); + return -ENOBUFS; +} + static inline void cifs_readpage_to_fscache(struct inode *inode, struct page *page) { @@ -90,6 +114,20 @@ static inline void cifs_fscache_release_page(struct page *page, gfp_t gfp) static inline int cifs_fscache_invalidate_page(struct page *page, struct inode *) {} +static inline int +cifs_readpage_from_fscache(struct inode *inode, struct page *page) +{ + return -ENOBUFS; +} + +static inline int cifs_readpages_from_fscache(struct inode *inode, + struct address_space *mapping, + struct list_head *pages, + unsigned *nr_pages) +{ + return -ENOBUFS; +} + static inline void cifs_readpage_to_fscache(struct inode *inode, struct page *page) {} -- cgit v1.2.3