new helper: file_inode(file)

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/fs/fuse/dir.c b/fs/fuse/dir.c
index b7c09f9..80ba395 100644
--- a/fs/fuse/dir.c
+++ b/fs/fuse/dir.c
@@ -1160,7 +1160,7 @@
 	int err;
 	size_t nbytes;
 	struct page *page;
-	struct inode *inode = file->f_path.dentry->d_inode;
+	struct inode *inode = file_inode(file);
 	struct fuse_conn *fc = get_fuse_conn(inode);
 	struct fuse_req *req;