cifs: read pages from FS-Cache

[linux-2.6-microblaze.git] / fs / cifs / fscache.h

diff --git a/fs/cifs/fscache.h b/fs/cifs/fscache.h
index 1a00d70..79164c6 100644 (file)
--- 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) {}