linux-ext4 - Re: [PATCH v4 1/2] dax: dax_layout_busy

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Date:   Fri, 10 Aug 2018 16:33:49 -0400
From:   "Theodore Y. Ts'o" <tytso@....edu>
To:     sandeen@...hat.com
Cc:     Ross Zwisler <ross.zwisler@...ux.intel.com>,
        Jan Kara <jack@...e.cz>,
        Dan Williams <dan.j.williams@...el.com>,
        Dave Chinner <david@...morbit.com>,
        "Darrick J. Wong" <darrick.wong@...cle.com>,
        Christoph Hellwig <hch@....de>, linux-nvdimm@...ts.01.org,
        Jeff Moyer <jmoyer@...hat.com>, linux-ext4@...r.kernel.org,
        Lukas Czerner <lczerner@...hat.com>
Subject: Re: [PATCH v4 1/2] dax: dax_layout_busy_page() warn on !exceptional

On Fri, Aug 10, 2018 at 02:52:53PM -0500, Eric Sandeen wrote:
> 
> Hi Ted, hadn't seem feedback from you on this by the time it gathered reviews,
> is this something you plan to merge for realz?  (I see it's on your dev
> branch now, just not sure of its permanence at this point.)

Yes, the dev branch is pretty much locked down since I assume the
merge window is openning over the weekend.

The reason why I've been silent is because I haven't had a chance to
do was a test run with DAX, because up until recently I wasn't able to
run a DAX regression test run.  (That's because of the CONFIG_KASAN
incompatibility with CONFIG_ZONE_DEVICE that caused the kernel to
instantly blow up on boot if I tried to enable emulated /dev/pmem
devices.)

I just kicked off a DAX test ("gce-xfstests -c dax -g auto") with
CONFIG_KASAN disabled, and I expect it shouldn't show up anything
concerning.  So assuming nothing surprising pops up, yes it should be
merged at the next merge window.

	     		    	     	  - Ted