On Tue, May 10, 2016 at 05:28:14PM +0200, Jan Kara wrote:

On Mon 09-05-16 11:38:28, Jan Kara wrote:
Somehow, I'm not able to reproduce the warnings... Anyway, I think I see
what's going on. Can you check whether the warning goes away when you
change the condition at the end of page_cache_tree_delete() to:

        if (!dax_mapping(mapping) && !workingset_node_pages(node) &&
            list_empty(&node->private_list)) {

Yep, this took care of both of the issues that I reported.  I'll restart my
testing with this in my baseline, but as of this fix I don't have any more
open testing issues. :)