linux-ext4 - Re: [PATCH 0/4] ext4: DAX fixes

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Date:	Mon, 16 May 2016 11:29:38 -0700
From:	Dan Williams <dan.j.williams@...el.com>
To:	Jan Kara <jack@...e.cz>
Cc:	"Theodore Ts'o" <tytso@....edu>,
	linux-ext4 <linux-ext4@...r.kernel.org>,
	linux-nvdimm <linux-nvdimm@...1.01.org>,
	Vishal Verma <vishal.l.verma@...el.com>,
	Ross Zwisler <ross.zwisler@...ux.intel.com>,
	linux-fsdevel <linux-fsdevel@...r.kernel.org>
Subject: Re: [PATCH 0/4] ext4: DAX fixes

On Mon, May 16, 2016 at 8:59 AM, Jan Kara <jack@...e.cz> wrote:
> On Mon 16-05-16 08:13:50, Dan Williams wrote:
>> On Mon, May 16, 2016 at 8:08 AM, Theodore Ts'o <tytso@....edu> wrote:
>> > On Mon, May 16, 2016 at 04:26:16PM +0200, Jan Kara wrote:
>> >> 1) Just push patches as is and have ext4 dax broken between ext4 merge and
>> >> nvdimm merge.
>> >>
>> >> 2) Split out the one-line change from "dax: Remove dead zeroing code from
>> >> fault handlers" in __dax_fault() which fixes the behavior for ext4 and
>> >> merge it through ext4 tree. Merge the rest through nvdimm tree.
>> >
>> > I'm good either way, although I have a slight preference for (2).
>> > It's really tiny preference, though, so if you or Dan want to run the
>> > fix through the dax branch, that's fine too.
>>
>> Would you fold the change and trigger a rebase or just apply it on
>> top?  If just applying on top then it seems the same exposure as
>> merging it intact through nvdimm.git.
>
> The patch which fixes ext4 behavior is attached. Just that we know what we
> are speaking about... Rebasing all the patches on top of this is trivial
> (git rebase just handles the conflict automatically).
>
> I've scheduled full ext4 & XFS xfstest run with just this patch and ext4
> fixes to make sure it doesn't introduce some intermediate regresion
> somewhere.
>

Ok, sounds good.  It makes the most sense to base the nvdimm.git
branch on top of this fix.
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