netdev - Re: [PATCH V2] net: ethernet: mellanox: correct page conversion

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Message-ID: <CAKHjkjnTV-qp_48dkJ_isZH2zxL_1-Q7MUCuK1kg6-Nkhk6KAg@mail.gmail.com>
Date:	Mon, 25 Apr 2016 16:47:18 +0300
From:	Eran Ben Elisha <eranlinuxmellanox@...il.com>
To:	Christoph Hellwig <hch@...radead.org>
Cc:	Or Gerlitz <gerlitz.or@...il.com>,
	Linux Netdev List <netdev@...r.kernel.org>,
	Sinan Kaya <okaya@...eaurora.org>,
	"linux-rdma@...r.kernel.org" <linux-rdma@...r.kernel.org>,
	timur@...eaurora.org, cov@...eaurora.org,
	Yishai Hadas <yishaih@...lanox.com>,
	Haggai Abramovsky <hagaya@...lanox.com>
Subject: Re: [PATCH V2] net: ethernet: mellanox: correct page conversion

On Thu, Apr 21, 2016 at 4:39 PM, Christoph Hellwig <hch@...radead.org> wrote:
> On Thu, Apr 21, 2016 at 04:37:42PM +0300, Or Gerlitz wrote:
>> On Wed, Apr 20, 2016 at 9:40 PM, Eran Ben Elisha
>> <eranlinuxmellanox@...il.com> wrote:
>> >> It is been 1.5 years since I reported the problem. We came up with three
>> >> different solutions this week. I'd like to see a version of the solution
>> >> to get merged until Mellanox comes up with a better solution with another
>> >> patch. My proposal is to use this one.
>>
>> > We will post our suggestion here in the following days.
>>
>> To update, Haggai A from our driver team is working on a patch. He is
>> providing a copy for
>> testing over ARM to the folks that reported on the problem and will
>> post it here early next week.
>
> Any chance you could give feedback to the patch I posted this week?

Haggai just posted Mellanox fix to this issue.
Your suggestion discards the option to work with fragmented memory at
mlx4_ib, which is unnecessary.

Please see our suggestion, comments are welcome.