linux-ext4 - Re: [PATCH 0/11] ext4: Convert ext4 DAX IO to iomap framework

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Message-ID: <20161101224550.GA2314@linux.intel.com>
Date:   Tue, 1 Nov 2016 16:45:50 -0600
From:   Ross Zwisler <ross.zwisler@...ux.intel.com>
To:     Dave Chinner <david@...morbit.com>
Cc:     Jan Kara <jack@...e.cz>, linux-fsdevel@...r.kernel.org,
        linux-ext4@...r.kernel.org, Ted Tso <tytso@....edu>,
        linux-nvdimm@...ts.01.org
Subject: Re: [PATCH 0/11] ext4: Convert ext4 DAX IO to iomap framework

On Wed, Nov 02, 2016 at 09:12:35AM +1100, Dave Chinner wrote:
> On Tue, Nov 01, 2016 at 10:06:10PM +0100, Jan Kara wrote:
> > Hello,
> > 
> > this patch set converts ext4 DAX IO paths to the new iomap framework and
> > removes the old bh-based DAX functions. As a result ext4 gains PMD page
> > fault support, also some other minor bugs get fixed. The patch set is based
> > on Ross' DAX PMD page fault support series [1]. It passes xfstests both in
> > DAX and non-DAX mode.
> > 
> > The question is how shall we merge this. If Dave is pulling PMD patches through
> > XFS tree, then these patches could go there as well (chances for conflicts
> > with other ext4 stuff are relatively low) or Dave could just export a stable
> > branch with PMD series which Ted would just pull...
> 
> I plan to grab Ross's PMD series in the next couple of days and I'll
> push it out as a stable topic branch once I've sanity tested it.  I
> don't really want to take a big chunk of ext4 stuff through the XFS
> tree if it can be avoided....

Yea, we also need to figure out how to get Jan's "dax: Clear dirty bits after
flushing caches" set merged, which is mostly MM stuff and I think will go
through akpm's tree?  That set is also based on my PMD stuff.
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