new helper: file_inode(file)

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/fs/ecryptfs/file.c b/fs/ecryptfs/file.c
index d45ba45..53acc9d 100644
--- a/fs/ecryptfs/file.c
+++ b/fs/ecryptfs/file.c
@@ -118,7 +118,7 @@
 
 	lower_file = ecryptfs_file_to_lower(file);
 	lower_file->f_pos = file->f_pos;
-	inode = file->f_path.dentry->d_inode;
+	inode = file_inode(file);
 	memset(&buf, 0, sizeof(buf));
 	buf.dirent = dirent;
 	buf.dentry = file->f_path.dentry;
@@ -133,7 +133,7 @@
 		goto out;
 	if (rc >= 0)
 		fsstack_copy_attr_atime(inode,
-					lower_file->f_path.dentry->d_inode);
+					file_inode(lower_file));
 out:
 	return rc;
 }