linux-kernel - Re: [RFC PATCH 0/3] Do not touch pages in remove

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Message-ID: <20180807142826.GB5309@techadventures.net>
Date:   Tue, 7 Aug 2018 16:28:26 +0200
From:   Oscar Salvador <osalvador@...hadventures.net>
To:     David Hildenbrand <david@...hat.com>
Cc:     akpm@...ux-foundation.org, mhocko@...e.com,
        dan.j.williams@...el.com, pasha.tatashin@...cle.com,
        jglisse@...hat.com, yasu.isimatu@...il.com, logang@...tatee.com,
        dave.jiang@...el.com, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org, Oscar Salvador <osalvador@...e.de>
Subject: Re: [RFC PATCH 0/3] Do not touch pages in remove_memory path

On Tue, Aug 07, 2018 at 04:20:37PM +0200, David Hildenbrand wrote:
> On 07.08.2018 16:19, Oscar Salvador wrote:
> > On Tue, Aug 07, 2018 at 04:16:35PM +0200, David Hildenbrand wrote:
> >> On 07.08.2018 15:37, osalvador@...hadventures.net wrote:
> >>> From: Oscar Salvador <osalvador@...e.de>
> >>>
> >>> This tries to fix [1], which was reported by David Hildenbrand, and also
> >>> does some cleanups/refactoring.
> >>>
> >>> I am sending this as RFC to see if the direction I am going is right before
> >>> spending more time into it.
> >>> And also to gather feedback about hmm/zone_device stuff.
> >>> The code compiles and I tested it successfully with normal memory-hotplug operations.
> >>>
> >>
> >> Please coordinate next time with people already working on this,
> >> otherwise you might end up wasting other people's time.
> > 
> > Hi David,
> > 
> > Sorry, if you are already working on this, I step back immediately.
> > I will wait for your work.
> 
> No, please keep going, you are way ahead of me ;)
> 
> (I was got stuck at ZONE_DEVICE so far)

It seems mine breaks ZONE_DEVICE for hmm at least, so.. not much better ^^.
So since you already got some work, let us not throw it away.

Thanks
-- 
Oscar Salvador
SUSE L3