Re: [PATCH v3 hmm 02/12] mm/hmm: Use hmm_mirror not mm as an argument for hmm_range_register

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Subject: Re: [PATCH v3 hmm 02/12] mm/hmm: Use hmm_mirror not mm as an argument for hmm_range_register
From: Christoph Hellwig <hch@xxxxxxxxxxxxx>
Date: Wed, 19 Jun 2019 01:14:16 -0700
Cc: Christoph Hellwig <hch@xxxxxxxxxxxxx>, Jerome Glisse <jglisse@xxxxxxxxxx>, Ralph Campbell <rcampbell@xxxxxxxxxx>, John Hubbard <jhubbard@xxxxxxxxxx>, Felix.Kuehling@xxxxxxx, linux-rdma@xxxxxxxxxxxxxxx, linux-mm@xxxxxxxxx, Andrea Arcangeli <aarcange@xxxxxxxxxx>, dri-devel@xxxxxxxxxxxxxxxxxxxxx, amd-gfx@xxxxxxxxxxxxxxxxxxxxx, Ben Skeggs <bskeggs@xxxxxxxxxx>, Ira Weiny <ira.weiny@xxxxxxxxx>, Philip Yang <Philip.Yang@xxxxxxx>
In-reply-to: <20190618130544.GC6961@ziepe.ca>
References: <20190614004450.20252-1-jgg@ziepe.ca> <20190614004450.20252-3-jgg@ziepe.ca> <20190615135906.GB17724@infradead.org> <20190618130544.GC6961@ziepe.ca>
User-agent: Mutt/1.11.4 (2019-03-13)

On Tue, Jun 18, 2019 at 10:05:44AM -0300, Jason Gunthorpe wrote:
> I'm thinking to tackle that as part of the mmu notififer invlock
> idea.. Once the range looses the lock then we don't really need to
> register it at all.

Ok.

References:
- [PATCH v3 hmm 00/12] mm/hmm: Various revisions from a locking/code review
  - From: Jason Gunthorpe
- [PATCH v3 hmm 02/12] mm/hmm: Use hmm_mirror not mm as an argument for hmm_range_register
  - From: Jason Gunthorpe
- Re: [PATCH v3 hmm 02/12] mm/hmm: Use hmm_mirror not mm as an argument for hmm_range_register
  - From: Christoph Hellwig
- Re: [PATCH v3 hmm 02/12] mm/hmm: Use hmm_mirror not mm as an argument for hmm_range_register
  - From: Jason Gunthorpe

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