linux-kernel - Re: [PATCH v3 0/4] Devmap cleanups + arm64 support

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Message-ID: <20190705123210.GB31525@mellanox.com>
Date:   Fri, 5 Jul 2019 12:32:15 +0000
From:   Jason Gunthorpe <jgg@...lanox.com>
To:     Dan Williams <dan.j.williams@...el.com>
CC:     Andrew Morton <akpm@...ux-foundation.org>,
        Christoph Hellwig <hch@...radead.org>,
        Mark Rutland <mark.rutland@....com>,
        Robin Murphy <robin.murphy@....com>,
        "linux-mm@...ck.org" <linux-mm@...ck.org>,
        "will.deacon@....com" <will.deacon@....com>,
        "catalin.marinas@....com" <catalin.marinas@....com>,
        "anshuman.khandual@....com" <anshuman.khandual@....com>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Michal Hocko <mhocko@...e.com>
Subject: Re: [PATCH v3 0/4] Devmap cleanups + arm64 support

On Thu, Jul 04, 2019 at 04:37:51PM -0700, Dan Williams wrote:

> > If we give up on CH's series the hmm.git will not have conflicts,
> > however we just kick the can to the next merge window where we will be
> > back to having to co-ordinate amd/nouveau/rdma git trees and -mm's
> > patch workflow - and I think we will be worse off as we will have
> > totally given up on a git based work flow for this. :(
> 
> I think the problem would be resolved going forward post-v5.3 since we
> won't have two tress managing kernel/memremap.c. This cycle however
> there is a backlog of kernel/memremap.c changes in -mm.

IHMO there is always something :( 

CH's series had something like 5 different collisions already, and I
think we did a good job of with everything but your subsection
patches.

Jason