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Date:   Tue, 27 Aug 2019 16:34:31 -0700
From:   Andrew Morton <akpm@linux-foundation.org>
To:     Jason Gunthorpe <jgg@mellanox.com>
Cc:     Christoph Hellwig <hch@infradead.org>,
        Linus Torvalds <torvalds@linux-foundation.org>,
        Christoph Hellwig <hch@lst.de>,
        Thomas =?ISO-8859-1?Q?Hellstr=F6m?= <thomas@shipmail.org>,
        Jerome Glisse <jglisse@redhat.com>,
        Steven Price <steven.price@arm.com>,
        Linux-MM <linux-mm@kvack.org>,
        Linux List Kernel Mailing <linux-kernel@vger.kernel.org>
Subject: Re: cleanup the walk_page_range interface
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On Tue, 27 Aug 2019 01:34:13 +0000 Jason Gunthorpe <jgg@mellanox.com> wrote:

> On Sat, Aug 24, 2019 at 03:26:55PM -0700, Christoph Hellwig wrote:
> > On Fri, Aug 23, 2019 at 01:43:12PM +0000, Jason Gunthorpe wrote:
> > > > So what is the plan forward?  Probably a little late for 5.3,
> > > > so queue it up in -mm for 5.4 and deal with the conflicts in at least
> > > > hmm?  Queue it up in the hmm tree even if it doesn't 100% fit?
> > > 
> > > Did we make a decision on this? Due to travel & LPC I'd like to
> > > finalize the hmm tree next week.
> > 
> > I don't think we've made any decision.  I'd still love to see this
> > in hmm.git.  It has a minor conflict, but I can resend a rebased
> > version.
> 
> I'm looking at this.. The hmm conflict is easy enough to fix.
> 
> But the compile conflict with these two patches in -mm requires some
> action from Andrew:
> 
> commit 027b9b8fd9ee3be6b7440462102ec03a2d593213
> Author: Minchan Kim <minchan@kernel.org>
> Date:   Sun Aug 25 11:49:27 2019 +1000
> 
>     mm: introduce MADV_PAGEOUT
> 
> commit f227453a14cadd4727dd159782531d617f257001
> Author: Minchan Kim <minchan@kernel.org>
> Date:   Sun Aug 25 11:49:27 2019 +1000
> 
>     mm: introduce MADV_COLD
>     
>     Patch series "Introduce MADV_COLD and MADV_PAGEOUT", v7.
> 
> I'm inclined to suggest you send this series in the 2nd half of the
> merge window after this MADV stuff lands for least disruption? 

Just merge it, I'll figure it out.  Probably by staging Minchan's
patches after linux-next.