linux-kernel - Re: dev_pagemap related cleanups v4

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Date:   Wed, 3 Jul 2019 01:08:27 +0000
From:   Jason Gunthorpe <jgg@...lanox.com>
To:     Dan Williams <dan.j.williams@...el.com>
CC:     Christoph Hellwig <hch@....de>,
        Jérôme Glisse <jglisse@...hat.com>,
        Ben Skeggs <bskeggs@...hat.com>,
        Ira Weiny <ira.weiny@...el.com>,
        "linux-mm@...ck.org" <linux-mm@...ck.org>,
        "nouveau@...ts.freedesktop.org" <nouveau@...ts.freedesktop.org>,
        "dri-devel@...ts.freedesktop.org" <dri-devel@...ts.freedesktop.org>,
        "linux-nvdimm@...ts.01.org" <linux-nvdimm@...ts.01.org>,
        "linux-pci@...r.kernel.org" <linux-pci@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: dev_pagemap related cleanups v4

On Tue, Jul 02, 2019 at 04:17:48PM -0700, Dan Williams wrote:
> On Tue, Jul 2, 2019 at 11:42 AM Jason Gunthorpe <jgg@...lanox.com> wrote:
> >
> > On Mon, Jul 01, 2019 at 10:25:17AM +0200, Christoph Hellwig wrote:
> > > And I've demonstrated that I can't send patch series..  While this
> > > has all the right patches, it also has the extra patches already
> > > in the hmm tree, and four extra patches I wanted to send once
> > > this series is merged.  I'll give up for now, please use the git
> > > url for anything serious, as it contains the right thing.
> >
> > Okay, I sorted it all out and temporarily put it here:
> >
> > https://github.com/jgunthorpe/linux/commits/hmm
> >
> > Bit involved job:
> > - Took Ira's v4 patch into hmm.git and confirmed it matches what
> >   Andrew has in linux-next after all the fixups
> > - Checked your github v4 and the v3 that hit the mailing list were
> >   substantially similar (I never did get a clean v4) and largely
> >   went with the github version
> > - Based CH's v4 series on -rc7 and put back the removal hunk in swap.c
> >   so it compiles
> > - Merge'd CH's series to hmm.git and fixed all the conflicts with Ira
> >   and Ralph's patches (such that swap.c remains unchanged)
> > - Added Dan's ack's and tested-by's
> 
> Looks good. Test merge (with some collisions, see below) also passes
> my test suite.

Okay, published toward linux-next now

> >
> > I think this fairly closely follows what was posted to the mailing
> > list.
> >
> > As it was more than a simple 'git am', I'll let it sit on github until
> > I hear OK's then I'll move it to kernel.org's hmm.git and it will hit
> > linux-next. 0-day should also run on this whole thing from my github.
> >
> > What I know is outstanding:
> >  - The conflicting ARM patches, I understand Andrew will handle these
> >    post-linux-next
> >  - The conflict with AMD GPU in -next, I am waiting to hear from AMD
> 
> Just a heads up that this also collides with the "sub-section" patches
> in Andrew's tree. The resolution is straightforward, mostly just
> colliding updates to arch_{add,remove}_memory() call sites in
> kernel/memremap.c and collisions with pgmap_altmap() usage.

Okay, thanks

Jason