linux-kernel - Re: [PATCH 0/2] video: fbdev: fix error handling, convert to pin_user

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Message-ID: <2f832d22-179e-b228-0864-f55dde765b48@nvidia.com>
Date:   Mon, 1 Jun 2020 10:42:26 -0700
From:   John Hubbard <jhubbard@...dia.com>
To:     Andy Shevchenko <andy.shevchenko@...il.com>
CC:     Sam Ravnborg <sam@...nborg.org>,
        LKML <linux-kernel@...r.kernel.org>,
        "linux-fbdev@...r.kernel.org" <linux-fbdev@...r.kernel.org>,
        Arnd Bergmann <arnd@...db.de>,
        "Gustavo A . R . Silva" <gustavo@...eddedor.com>,
        "Jani Nikula" <jani.nikula@...el.com>,
        Daniel Vetter <daniel.vetter@...ll.ch>,
        Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>,
        "dri-devel@...ts.freedesktop.org" <dri-devel@...ts.freedesktop.org>,
        "Paul Mundt" <lethal@...ux-sh.org>
Subject: Re: [PATCH 0/2] video: fbdev: fix error handling, convert to
 pin_user_pages*()

On 2020-06-01 10:25, Andy Shevchenko wrote:
> On Mon, Jun 1, 2020 at 8:10 PM John Hubbard <jhubbard@...dia.com> wrote:
>>
>> On 2020-06-01 03:35, Andy Shevchenko wrote:
>>> On Mon, Jun 1, 2020 at 1:00 AM John Hubbard <jhubbard@...dia.com> wrote:
>>>> On 2020-05-31 14:11, Andy Shevchenko wrote:
>>>>>       ...
>>>>> JFYI, we have history.git starting from v0.01.
>>>>>
>>>> OK, thanks for that note. According to that history.git [1],
>>>> then: drivers/video/pvr2fb.c had get_user_pages_fast() support added to
>>>> pvr2fb_write() back in 2004, but only for CONFIG_SH_DMA, as part of
>>>>
>>>>        commit 434502754f2 ("[PATCH] SH Merge")
>>>>
>>>> ...and that commit created the minor bug that patch 0001 here
>>>> addresses. (+Cc Paul just for the sake of completeness.)
>>>>
>>>>
>>>> [1] git://git.kernel.org/pub/scm/linux/kernel/git/tglx/history.git
>>>
>>> I mentioned this one, but I guess content should be the same.
>>>
>>> https://git.kernel.org/pub/scm/linux/kernel/git/history/history.git/
>>>
>>
>> Actually, that history.git *starts* at Linux 2.6.12-rc2,
> 
> It's not true.

OK I see, neither a straight "git log" nor git branches will suffice, you
have to use tags in order to get to the older versions.

> 
>> while
>> tglx/history.git *ends* at Linux 2.6.12-rc2 (which is in April, 2005).
>> And the commit I was looking for is in 2004. So that's why I needed a
>> different stretch of history.
> 
> Actually history/history.git contains all of them starting from v0.01.
> But it ends, indeed, on 2.6.33.
> 

thanks,
-- 
John Hubbard
NVIDIA