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Date:   Tue, 30 Jul 2019 15:09:44 +0200
From:   Christoph Hellwig <hch@lst.de>
To:     Jason Gunthorpe <jgg@mellanox.com>
Cc:     Christoph Hellwig <hch@lst.de>,
        =?iso-8859-1?B?Suly9G1l?= Glisse <jglisse@redhat.com>,
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Subject: Re: turn the hmm migrate_vma upside down
Message-ID: <20190730130944.GA4566@lst.de>
References: <20190729142843.22320-1-hch@lst.de> <20190730123218.GA24038@mellanox.com>
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On Tue, Jul 30, 2019 at 12:32:24PM +0000, Jason Gunthorpe wrote:
> Does this only impact hmm users, or does migrate.c have a broader
> usage?

migrate.c really contains two things:  the traditional page migration
code implementing aops ->migrate semantics, and migrate_vma and its
callbacks.  The first part is broader, the second part is hmm specific
(and should probably have been in a file of its own, given that it is
guarded off CONFIG_MIGRATE_VMA_HELPER).  This series only touched the
latter part.