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From: Andrew Morton <akpm@linux-foundation.org>
To: Ralph Campbell <rcampbell@nvidia.com>
Cc: "John Hubbard" <jhubbard@nvidia.com>,
	linux-mm@kvack.org, linux-kernel@vger.kernel.org,
	"Jérôme Glisse" <jglisse@redhat.com>,
	"Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>,
	"Mike Kravetz" <mike.kravetz@oracle.com>,
	"Jason Gunthorpe" <jgg@mellanox.com>
Subject: Re: [PATCH] mm/hmm: Fix bad subpage pointer in try_to_unmap_one
Date: Tue, 16 Jul 2019 14:10:48 -0700	[thread overview]
Message-ID: <20190716141048.c94534a23e4c059dff34e3a1@linux-foundation.org> (raw)
In-Reply-To: <8dd86951-f8b0-75c2-d738-5080343e5dc5@nvidia.com>

On Mon, 15 Jul 2019 17:38:04 -0700 Ralph Campbell <rcampbell@nvidia.com> wrote:

> I'm not surprised at the confusion. It took me quite awhile to 
> understand how migrate_vma() works with ZONE_DEVICE private memory.
>
> ...
> 
> I see Christoph Hellwig got confused by this too [1].

While making such discoveries, please prepare a patch which adds
comments which will help the next poor soul!


      parent reply	other threads:[~2019-07-16 21:10 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-07-09 22:35 [PATCH] mm/hmm: Fix bad subpage pointer in try_to_unmap_one Ralph Campbell
2019-07-10  0:28 ` Andrew Morton
2019-07-10  1:24   ` Ralph Campbell
2019-07-15 22:00     ` Andrew Morton
2019-07-15 23:34       ` John Hubbard
2019-07-16  0:38         ` Ralph Campbell
2019-07-16  6:14           ` John Hubbard
2019-07-16 15:33             ` Jerome Glisse
2019-07-16 21:10           ` Andrew Morton [this message]

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