linux-kernel - Re: turn the hmm migrate

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Message-ID: <20190730123218.GA24038@mellanox.com>
Date:   Tue, 30 Jul 2019 12:32:24 +0000
From:   Jason Gunthorpe <jgg@...lanox.com>
To:     Christoph Hellwig <hch@....de>
CC:     Jérôme Glisse <jglisse@...hat.com>,
        Ben Skeggs <bskeggs@...hat.com>,
        Ralph Campbell <rcampbell@...dia.com>,
        Bharata B Rao <bharata@...ux.ibm.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        "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-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: turn the hmm migrate_vma upside down

On Mon, Jul 29, 2019 at 05:28:34PM +0300, Christoph Hellwig wrote:
> Hi Jérôme, Ben and Jason,
> 
> below is a series against the hmm tree which starts revamping the
> migrate_vma functionality.  The prime idea is to export three slightly
> lower level functions and thus avoid the need for migrate_vma_ops
> callbacks.

I don't feel I can contribute a worthwhile review for this part of the
code right now.

Does this only impact hmm users, or does migrate.c have a broader
usage?

Who do we need on review to progress on this?

Thanks,
Jason