From: John Hubbard <jhubbard@nvidia.com>
To: Christopher Lameter <cl@linux.com>
Cc: Jason Gunthorpe <jgg@ziepe.ca>, Ira Weiny <ira.weiny@intel.com>,
Dan Williams <dan.j.williams@intel.com>, Jan Kara <jack@suse.cz>,
Dave Chinner <david@fromorbit.com>,
Doug Ledford <dledford@redhat.com>,
Matthew Wilcox <willy@infradead.org>,
lsf-pc@lists.linux-foundation.org,
linux-rdma <linux-rdma@vger.kernel.org>,
Linux MM <linux-mm@kvack.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
Jerome Glisse <jglisse@redhat.com>,
Michal Hocko <mhocko@kernel.org>
Subject: Re: [LSF/MM TOPIC] Discuss least bad options for resolving longterm-GUP usage by RDMA
Date: Tue, 12 Feb 2019 18:58:10 -0800 [thread overview]
Message-ID: <b8794103-5ae1-ff8d-22be-d585d36e6310@nvidia.com> (raw)
In-Reply-To: <01000168e29418ba-81301f56-9370-4555-b70c-3ad51be84543-000000@email.amazonses.com>
On 2/12/19 8:39 AM, Christopher Lameter wrote:
> On Mon, 11 Feb 2019, John Hubbard wrote:
>
>> But anyway, Jan's proposal a bit earlier today [1] is finally sinking into
>> my head--if we actually go that way, and prevent the caller from setting up
>> a problematic gup pin in the first place, then that may make this point sort
>> of moot.
>
> Ok well can be document how we think it would work somewhere? Long term
> mapping a page cache page could a problem and we need to explain that
> somewhere.
>
Yes, once the dust settles, I think Documentation/vm/get_user_pages.rst is the
right place. I started to create that file, but someone observed that my initial
content was entirely backward-looking (described the original problem, instead
of describing how the new system would work). So I'll use this opportunity for
a do-over. :)
thanks,
--
John Hubbard
NVIDIA
WARNING: multiple messages have this Message-ID (diff)
From: John Hubbard <jhubbard@nvidia.com>
To: Christopher Lameter <cl@linux.com>
Cc: Jason Gunthorpe <jgg@ziepe.ca>, Ira Weiny <ira.weiny@intel.com>,
Dan Williams <dan.j.williams@intel.com>, Jan Kara <jack@suse.cz>,
Dave Chinner <david@fromorbit.com>,
Doug Ledford <dledford@redhat.com>,
Matthew Wilcox <willy@infradead.org>,
<lsf-pc@lists.linux-foundation.org>,
linux-rdma <linux-rdma@vger.kernel.org>,
Linux MM <linux-mm@kvack.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
Jerome Glisse <jglisse@redhat.com>,
Michal Hocko <mhocko@kernel.org>
Subject: Re: [LSF/MM TOPIC] Discuss least bad options for resolving longterm-GUP usage by RDMA
Date: Tue, 12 Feb 2019 18:58:10 -0800 [thread overview]
Message-ID: <b8794103-5ae1-ff8d-22be-d585d36e6310@nvidia.com> (raw)
In-Reply-To: <01000168e29418ba-81301f56-9370-4555-b70c-3ad51be84543-000000@email.amazonses.com>
On 2/12/19 8:39 AM, Christopher Lameter wrote:
> On Mon, 11 Feb 2019, John Hubbard wrote:
>
>> But anyway, Jan's proposal a bit earlier today [1] is finally sinking into
>> my head--if we actually go that way, and prevent the caller from setting up
>> a problematic gup pin in the first place, then that may make this point sort
>> of moot.
>
> Ok well can be document how we think it would work somewhere? Long term
> mapping a page cache page could a problem and we need to explain that
> somewhere.
>
Yes, once the dust settles, I think Documentation/vm/get_user_pages.rst is the
right place. I started to create that file, but someone observed that my initial
content was entirely backward-looking (described the original problem, instead
of describing how the new system would work). So I'll use this opportunity for
a do-over. :)
thanks,
--
John Hubbard
NVIDIA
next prev parent reply other threads:[~2019-02-13 2:58 UTC|newest]
Thread overview: 155+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-02-05 17:50 [LSF/MM TOPIC] Discuss least bad options for resolving longterm-GUP usage by RDMA Ira Weiny
2019-02-05 18:01 ` Ira Weiny
2019-02-06 21:31 ` Dave Chinner
2019-02-06 9:50 ` Jan Kara
2019-02-06 17:31 ` Jason Gunthorpe
2019-02-06 17:52 ` Matthew Wilcox
2019-02-06 18:32 ` Doug Ledford
2019-02-06 18:32 ` Doug Ledford
2019-02-06 18:35 ` Matthew Wilcox
2019-02-06 18:44 ` Doug Ledford
2019-02-06 18:44 ` Doug Ledford
2019-02-06 18:52 ` Jason Gunthorpe
2019-02-06 19:45 ` Dan Williams
2019-02-06 19:45 ` Dan Williams
2019-02-06 20:14 ` Doug Ledford
2019-02-06 21:04 ` Dan Williams
2019-02-06 21:04 ` Dan Williams
2019-02-06 21:12 ` Doug Ledford
2019-02-06 21:12 ` Doug Ledford
2019-02-06 19:16 ` Christopher Lameter
2019-02-06 19:16 ` Christopher Lameter
2019-02-06 19:40 ` Matthew Wilcox
2019-02-06 20:16 ` Doug Ledford
2019-02-06 20:16 ` Doug Ledford
2019-02-06 20:20 ` Matthew Wilcox
2019-02-06 20:28 ` Doug Ledford
2019-02-06 20:28 ` Doug Ledford
2019-02-06 20:41 ` Matthew Wilcox
2019-02-06 20:47 ` Doug Ledford
2019-02-06 20:47 ` Doug Ledford
2019-02-06 20:49 ` Matthew Wilcox
2019-02-06 20:50 ` Doug Ledford
2019-02-06 20:50 ` Doug Ledford
2019-02-06 20:31 ` Jason Gunthorpe
2019-02-06 20:39 ` Christopher Lameter
2019-02-06 20:39 ` Christopher Lameter
2019-02-06 20:54 ` Doug Ledford
2019-02-06 20:54 ` Doug Ledford
2019-02-07 16:48 ` Jan Kara
2019-02-06 20:24 ` Christopher Lameter
2019-02-06 20:24 ` Christopher Lameter
2019-02-06 21:03 ` Dave Chinner
2019-02-06 22:08 ` Jason Gunthorpe
2019-02-06 22:24 ` Doug Ledford
2019-02-06 22:24 ` Doug Ledford
2019-02-06 22:44 ` Dan Williams
2019-02-06 22:44 ` Dan Williams
2019-02-06 23:21 ` Jason Gunthorpe
2019-02-06 23:30 ` Dan Williams
2019-02-06 23:30 ` Dan Williams
2019-02-06 23:41 ` Jason Gunthorpe
2019-02-07 0:22 ` Dan Williams
2019-02-07 0:22 ` Dan Williams
2019-02-07 0:22 ` Dan Williams
2019-02-07 0:22 ` Dan Williams
2019-02-07 5:33 ` Jason Gunthorpe
2019-02-07 1:57 ` Doug Ledford
2019-02-07 1:57 ` Doug Ledford
2019-02-07 2:48 ` Dan Williams
2019-02-07 2:48 ` Dan Williams
2019-02-07 2:48 ` Dan Williams
2019-02-07 2:48 ` Dan Williams
2019-02-07 2:42 ` Doug Ledford
2019-02-07 2:42 ` Doug Ledford
2019-02-07 3:13 ` Dan Williams
2019-02-07 3:13 ` Dan Williams
2019-02-07 17:23 ` Ira Weiny
2019-02-07 16:25 ` Doug Ledford
2019-02-07 16:25 ` Doug Ledford
2019-02-07 16:55 ` Christopher Lameter
2019-02-07 16:55 ` Christopher Lameter
2019-02-07 17:35 ` Ira Weiny
2019-02-07 18:17 ` Christopher Lameter
2019-02-07 18:17 ` Christopher Lameter
2019-02-08 4:43 ` Dave Chinner
2019-02-08 11:10 ` Jan Kara
2019-02-08 20:50 ` Dan Williams
2019-02-08 20:50 ` Dan Williams
2019-02-11 10:24 ` Jan Kara
2019-02-11 17:22 ` Dan Williams
2019-02-11 17:22 ` Dan Williams
2019-02-11 18:06 ` Jason Gunthorpe
2019-02-11 18:15 ` Dan Williams
2019-02-11 18:15 ` Dan Williams
2019-02-11 18:19 ` Ira Weiny
2019-02-11 18:26 ` Jason Gunthorpe
2019-02-11 18:40 ` Matthew Wilcox
2019-02-11 19:58 ` Dan Williams
2019-02-11 19:58 ` Dan Williams
2019-02-11 20:49 ` Jason Gunthorpe
2019-02-11 21:02 ` Dan Williams
2019-02-11 21:02 ` Dan Williams
2019-02-11 21:09 ` Jason Gunthorpe
2019-02-12 16:34 ` Jan Kara
2019-02-12 16:55 ` Christopher Lameter
2019-02-12 16:55 ` Christopher Lameter
2019-02-13 15:06 ` Jan Kara
2019-02-12 16:36 ` Christopher Lameter
2019-02-12 16:36 ` Christopher Lameter
2019-02-12 16:44 ` Jan Kara
2019-02-11 21:08 ` Jerome Glisse
2019-02-11 21:22 ` John Hubbard
2019-02-11 21:22 ` John Hubbard
2019-02-11 22:12 ` Jason Gunthorpe
2019-02-11 22:33 ` John Hubbard
2019-02-11 22:33 ` John Hubbard
2019-02-12 16:39 ` Christopher Lameter
2019-02-12 16:39 ` Christopher Lameter
2019-02-13 2:58 ` John Hubbard [this message]
2019-02-13 2:58 ` John Hubbard
2019-02-12 16:28 ` Jan Kara
2019-02-14 20:26 ` Jerome Glisse
2019-02-14 20:50 ` Matthew Wilcox
2019-02-14 21:39 ` Jerome Glisse
2019-02-15 1:19 ` Dave Chinner
2019-02-15 15:42 ` Christopher Lameter
2019-02-15 15:42 ` Christopher Lameter
2019-02-15 18:08 ` Matthew Wilcox
2019-02-15 18:31 ` Christopher Lameter
2019-02-15 18:31 ` Christopher Lameter
2019-02-15 22:00 ` Jason Gunthorpe
2019-02-15 23:38 ` Ira Weiny
2019-02-16 22:42 ` Dave Chinner
2019-02-17 2:54 ` Christopher Lameter
2019-02-17 2:54 ` Christopher Lameter
2019-02-12 16:07 ` Jan Kara
2019-02-12 21:53 ` Dan Williams
2019-02-12 21:53 ` Dan Williams
2019-02-08 21:20 ` Dave Chinner
2019-02-08 15:33 ` Christopher Lameter
2019-02-08 15:33 ` Christopher Lameter
2019-02-07 17:24 ` Matthew Wilcox
2019-02-07 17:26 ` Jason Gunthorpe
2019-02-07 3:52 ` Dave Chinner
2019-02-07 5:23 ` Jason Gunthorpe
2019-02-07 6:00 ` Dan Williams
2019-02-07 6:00 ` Dan Williams
2019-02-07 17:17 ` Jason Gunthorpe
2019-02-07 23:54 ` Dan Williams
2019-02-07 23:54 ` Dan Williams
2019-02-08 1:44 ` Ira Weiny
2019-02-08 5:19 ` Jason Gunthorpe
2019-02-08 7:20 ` Dan Williams
2019-02-08 7:20 ` Dan Williams
2019-02-08 15:42 ` Jason Gunthorpe
2019-02-07 15:04 ` Chuck Lever
2019-02-07 15:28 ` Tom Talpey
2019-02-07 15:37 ` Doug Ledford
2019-02-07 15:37 ` Doug Ledford
2019-02-07 15:41 ` Tom Talpey
2019-02-07 15:56 ` Doug Ledford
2019-02-07 15:56 ` Doug Ledford
2019-02-07 16:57 ` Ira Weiny
2019-02-07 21:31 ` Tom Talpey
2019-02-07 16:54 ` Ira Weiny
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