ceph: convert ceph_readpage to netfs_readpage

[linux-2.6-microblaze.git] / fs / ceph / cache.h

diff --git a/fs/ceph/cache.h b/fs/ceph/cache.h
index 10c2131..1409d61 100644 (file)
--- 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;
@@ -35,11 +37,31 @@ static inline void ceph_fscache_inode_init(struct ceph_inode_info *ci)
        ci->fscache = NULL;
 }
 
+static inline struct fscache_cookie *ceph_fscache_cookie(struct ceph_inode_info *ci)
+{
+       return ci->fscache;
+}
+
 static inline void ceph_fscache_invalidate(struct inode *inode)
 {
        fscache_invalidate(ceph_inode(inode)->fscache);
 }
 
+static inline bool ceph_is_cache_enabled(struct inode *inode)
+{
+       struct fscache_cookie *cookie = ceph_fscache_cookie(ceph_inode(inode));
+
+       if (!cookie)
+               return false;
+       return fscache_cookie_enabled(cookie);
+}
+
+static inline int ceph_begin_cache_operation(struct netfs_read_request *rreq)
+{
+       struct fscache_cookie *cookie = ceph_fscache_cookie(ceph_inode(rreq->inode));
+
+       return fscache_begin_read_operation(rreq, cookie);
+}
 #else
 
 static inline int ceph_fscache_register(void)
@@ -65,6 +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)
 {
 }
@@ -82,6 +109,15 @@ static inline void ceph_fscache_invalidate(struct inode *inode)
 {
 }
 
+static inline bool ceph_is_cache_enabled(struct inode *inode)
+{
+       return false;
+}
+
+static inline int ceph_begin_cache_operation(struct netfs_read_request *rreq)
+{
+       return -ENOBUFS;
+}
 #endif
 
 #endif /* _CEPH_CACHE_H */