1 files changed, 24 insertions, 77 deletions

diff --git a/fs/ceph/cache.h b/fs/ceph/cache.h
index 89dbdd1eb14a..1409d6149281 100644
--- a/fs/ceph/cache.h
+++ b/fs/ceph/cache.h
@@ -9,6 +9,8 @@
 #ifndef _CEPH_CACHE_H
 #define _CEPH_CACHE_H
 
+#include <linux/netfs.h>
+
 #ifdef CONFIG_CEPH_FSCACHE
 
 extern struct fscache_netfs ceph_cache_netfs;
@@ -29,54 +31,37 @@ int ceph_readpages_from_fscache(struct inode *inode,
 				struct address_space *mapping,
 				struct list_head *pages,
 				unsigned *nr_pages);
-void ceph_readpage_to_fscache(struct inode *inode, struct page *page);
-void ceph_invalidate_fscache_page(struct inode* inode, struct page *page);
 
 static inline void ceph_fscache_inode_init(struct ceph_inode_info *ci)
 {
 	ci->fscache = NULL;
-	ci->i_fscache_gen = 0;
 }
 
-static inline void ceph_fscache_invalidate(struct inode *inode)
+static inline struct fscache_cookie *ceph_fscache_cookie(struct ceph_inode_info *ci)
 {
-	fscache_invalidate(ceph_inode(inode)->fscache);
+	return ci->fscache;
 }
 
-static inline void ceph_fscache_uncache_page(struct inode *inode,
-					     struct page *page)
+static inline void ceph_fscache_invalidate(struct inode *inode)
 {
-	struct ceph_inode_info *ci = ceph_inode(inode);
-	return fscache_uncache_page(ci->fscache, page);
+	fscache_invalidate(ceph_inode(inode)->fscache);
 }
 
-static inline int ceph_release_fscache_page(struct page *page, gfp_t gfp)
+static inline bool ceph_is_cache_enabled(struct inode *inode)
 {
-	struct inode* inode = page->mapping->host;
-	struct ceph_inode_info *ci = ceph_inode(inode);
-	return fscache_maybe_release_page(ci->fscache, page, gfp);
-}
+	struct fscache_cookie *cookie = ceph_fscache_cookie(ceph_inode(inode));
 
-static inline void ceph_fscache_readpage_cancel(struct inode *inode,
-						struct page *page)
-{
-	struct ceph_inode_info *ci = ceph_inode(inode);
-	if (fscache_cookie_valid(ci->fscache) && PageFsCache(page))
-		__fscache_uncache_page(ci->fscache, page);
+	if (!cookie)
+		return false;
+	return fscache_cookie_enabled(cookie);
 }
 
-static inline void ceph_fscache_readpages_cancel(struct inode *inode,
-						 struct list_head *pages)
+static inline int ceph_begin_cache_operation(struct netfs_read_request *rreq)
 {
-	struct ceph_inode_info *ci = ceph_inode(inode);
-	return fscache_readpages_cancel(ci->fscache, pages);
-}
+	struct fscache_cookie *cookie = ceph_fscache_cookie(ceph_inode(rreq->inode));
 
-static inline void ceph_disable_fscache_readpage(struct ceph_inode_info *ci)
-{
-	ci->i_fscache_gen = ci->i_rdcache_gen - 1;
+	return fscache_begin_read_operation(rreq, cookie);
 }
-
 #else
 
 static inline int ceph_fscache_register(void)
@@ -102,6 +87,11 @@ static inline void ceph_fscache_inode_init(struct ceph_inode_info *ci)
 {
 }
 
+static inline struct fscache_cookie *ceph_fscache_cookie(struct ceph_inode_info *ci)
+{
+	return NULL;
+}
+
 static inline void ceph_fscache_register_inode_cookie(struct inode *inode)
 {
 }
@@ -115,62 +105,19 @@ static inline void ceph_fscache_file_set_cookie(struct inode *inode,
 {
 }
 
-static inline void ceph_fscache_revalidate_cookie(struct ceph_inode_info *ci)
-{
-}
-
-static inline void ceph_fscache_uncache_page(struct inode *inode,
-					     struct page *pages)
-{
-}
-
-static inline int ceph_readpage_from_fscache(struct inode* inode,
-					     struct page *page)
-{
-	return -ENOBUFS;
-}
-
-static inline int ceph_readpages_from_fscache(struct inode *inode,
-					      struct address_space *mapping,
-					      struct list_head *pages,
-					      unsigned *nr_pages)
-{
-	return -ENOBUFS;
-}
-
-static inline void ceph_readpage_to_fscache(struct inode *inode,
-					    struct page *page)
-{
-}
-
 static inline void ceph_fscache_invalidate(struct inode *inode)
 {
 }
 
-static inline void ceph_invalidate_fscache_page(struct inode *inode,
-						struct page *page)
+static inline bool ceph_is_cache_enabled(struct inode *inode)
 {
+	return false;
 }
 
-static inline int ceph_release_fscache_page(struct page *page, gfp_t gfp)
-{
-	return 1;
-}
-
-static inline void ceph_fscache_readpage_cancel(struct inode *inode,
-						struct page *page)
-{
-}
-
-static inline void ceph_fscache_readpages_cancel(struct inode *inode,
-						 struct list_head *pages)
-{
-}
-
-static inline void ceph_disable_fscache_readpage(struct ceph_inode_info *ci)
+static inline int ceph_begin_cache_operation(struct netfs_read_request *rreq)
 {
+	return -ENOBUFS;
 }
-
 #endif
 
-#endif
+#endif /* _CEPH_CACHE_H */