linux-ext4 - Re: [RFC v3] [PATCH 0/18] DAX page fault locking

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Message-ID: <20160510203003.GA5314@linux.intel.com>
Date:	Tue, 10 May 2016 14:30:03 -0600
From:	Ross Zwisler <ross.zwisler@...ux.intel.com>
To:	Jan Kara <jack@...e.cz>
Cc:	Ross Zwisler <ross.zwisler@...ux.intel.com>,
	linux-fsdevel@...r.kernel.org, linux-ext4@...r.kernel.org,
	linux-mm@...ck.org, Dan Williams <dan.j.williams@...el.com>,
	linux-nvdimm@...ts.01.org, Matthew Wilcox <willy@...ux.intel.com>
Subject: Re: [RFC v3] [PATCH 0/18] DAX page fault locking

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. :)
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