new helper: file_inode(file)

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/fs/afs/dir.c b/fs/afs/dir.c
index db47790..7a465ed 100644
--- a/fs/afs/dir.c
+++ b/fs/afs/dir.c
@@ -393,12 +393,12 @@
 	int ret;
 
 	_enter("{%Ld,{%lu}}",
-	       file->f_pos, file->f_path.dentry->d_inode->i_ino);
+	       file->f_pos, file_inode(file)->i_ino);
 
 	ASSERT(file->private_data != NULL);
 
 	fpos = file->f_pos;
-	ret = afs_dir_iterate(file->f_path.dentry->d_inode, &fpos,
+	ret = afs_dir_iterate(file_inode(file), &fpos,
 			      cookie, filldir, file->private_data);
 	file->f_pos = fpos;