linux-kernel - Re: cleanup the walk_page

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Message-ID: <20190827233619.GB28814@mellanox.com>
Date:   Tue, 27 Aug 2019 23:36:26 +0000
From:   Jason Gunthorpe <jgg@...lanox.com>
To:     Andrew Morton <akpm@...ux-foundation.org>
CC:     Christoph Hellwig <hch@...radead.org>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Christoph Hellwig <hch@....de>,
        Thomas Hellström <thomas@...pmail.org>,
        Jerome Glisse <jglisse@...hat.com>,
        Steven Price <steven.price@....com>,
        Linux-MM <linux-mm@...ck.org>,
        Linux List Kernel Mailing <linux-kernel@...r.kernel.org>
Subject: Re: cleanup the walk_page_range interface

On Tue, Aug 27, 2019 at 04:34:31PM -0700, Andrew Morton wrote:
> On Tue, 27 Aug 2019 01:34:13 +0000 Jason Gunthorpe <jgg@...lanox.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@...nel.org>
> > Date:   Sun Aug 25 11:49:27 2019 +1000
> > 
> >     mm: introduce MADV_PAGEOUT
> > 
> > commit f227453a14cadd4727dd159782531d617f257001
> > Author: Minchan Kim <minchan@...nel.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.

Okay, I'll get it on a branch and merge it toward hmm.git tomorrow

Steven, do you need the branch as well for your patch series? Let me know

Thanks,
Jason