linux-kernel - Re: what's in nvdimm.git for v4.4?

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Date:	Wed, 21 Oct 2015 13:38:47 +1100
From:	Dave Chinner <david@...morbit.com>
To:	Dan Williams <dan.j.williams@...el.com>
Cc:	"axboe@...com" <axboe@...com>,
	"akpm@...ux-foundation.org" <akpm@...ux-foundation.org>,
	"Wysocki, Rafael J" <rafael.j.wysocki@...el.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"hch@....de" <hch@....de>,
	"martin.petersen@...cle.com" <martin.petersen@...cle.com>,
	"linux-nvdimm@...ts.01.org" <linux-nvdimm@...ts.01.org>,
	"linux-fsdevel@...r.kernel.org" <linux-fsdevel@...r.kernel.org>,
	"linux-acpi@...r.kernel.org" <linux-acpi@...r.kernel.org>,
	"jack@...e.cz" <jack@...e.cz>
Subject: Re: what's in nvdimm.git for v4.4?

On Tue, Oct 20, 2015 at 05:31:18PM -0700, Dan Williams wrote:
> On Tue, Oct 20, 2015 at 5:01 PM, Dave Chinner <david@...morbit.com> wrote:
> > On Tue, Oct 20, 2015 at 11:31:45PM +0000, Williams, Dan J wrote:
> >> Here is a status summary of the topic-branches nvdimm.git is tracking
> >> for v4.4.  Unless indicated these branches are not present in -next.
> >> Please ACK, NAK, or ask for a re-post of any of the below to disposition
> >> it for the merge window.
> >>
> >> ===
> >> for-4.4/dax-fixes:
> >> ===
> > ...
> >>         Dave Chinner (5):
> >>               xfs: fix inode size update overflow in xfs_map_direct()
> >>               xfs: introduce BMAPI_ZERO for allocating zeroed extents
> >>               xfs: Don't use unwritten extents for DAX
> >>               xfs: DAX does not use IO completion callbacks
> >>               xfs: add ->pfn_mkwrite support for DAX
> >
> > Please drop these. They have not been reviewed yet, and because
> > the changes affect more than just DAX (core XFS allocator
> > functionality was changed) these need to go through the XFS tree.
> >
> 
> Ok, thanks for the heads up.  For the get_user_pages() patches that
> build on these fixes I'm assuming your review bandwidth is in short
> supply to also give an XFS sign-off on those changes for 4.4?

I'm not aware of any other patches that touch XFS. AFAIA, you
haven't cc'd anything to xfs@....sgi.com, so it's not on my radar...

> I'm wondering if we can take a conservative step forward with those
> patches for 4.4.  if XFS and EXT4 interactions need more time to get
> worked out, which I believe they do, I can conceive just turning on
> get_user_pages() support for DAX-mappings of the raw block device.

Regardless of the ext4/XFS status, isn't it a bit late to be
proposing brand new stuff that nobody has had time to think about
for the next merge window?

Cheers,

Dave.
-- 
Dave Chinner
david@...morbit.com
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