new helper: file_inode(file)

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/include/linux/lockd/lockd.h b/include/linux/lockd/lockd.h
index f5a051a..0e62d84 100644
--- a/include/linux/lockd/lockd.h
+++ b/include/linux/lockd/lockd.h
@@ -291,7 +291,7 @@
 
 static inline struct inode *nlmsvc_file_inode(struct nlm_file *file)
 {
-	return file->f_file->f_path.dentry->d_inode;
+	return file_inode(file->f_file);
 }
 
 static inline int __nlm_privileged_request4(const struct sockaddr *sap)