linux-kernel - Re: [PATCH 2/2] xen/gntdev.c: Convert get_user_pages*() to pin_user

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Message-ID: <e4a103cd-d244-8f9c-b717-ca3795f6b8dc@oracle.com>
Date:   Wed, 30 Sep 2020 10:10:55 -0400
From:   boris.ostrovsky@...cle.com
To:     Souptick Joarder <jrdr.linux@...il.com>
Cc:     Juergen Gross <jgross@...e.com>, sstabellini@...nel.org,
        xen-devel@...ts.xenproject.org, linux-kernel@...r.kernel.org,
        John Hubbard <jhubbard@...dia.com>
Subject: Re: [PATCH 2/2] xen/gntdev.c: Convert get_user_pages*() to
 pin_user_pages*()



On 9/29/20 10:14 PM, Souptick Joarder wrote:
> On Tue, Sep 29, 2020 at 6:00 PM <boris.ostrovsky@...cle.com> wrote:
>>
>>
>> On 9/29/20 8:09 AM, Souptick Joarder wrote:
>>> On Fri, Sep 11, 2020 at 8:12 PM <boris.ostrovsky@...cle.com> wrote:
>>>>
>>>> On 9/6/20 2:51 AM, Souptick Joarder wrote:
>>>>> In 2019, we introduced pin_user_pages*() and now we are converting
>>>>> get_user_pages*() to the new API as appropriate. [1] & [2] could
>>>>> be referred for more information. This is case 5 as per document [1].
>>>>>
>>>>> [1] Documentation/core-api/pin_user_pages.rst
>>>>>
>>>>> [2] "Explicit pinning of user-space pages":
>>>>>         https://lwn.net/Articles/807108/
>>>>>
>>>>> Signed-off-by: Souptick Joarder <jrdr.linux@...il.com>
>>>>> Cc: John Hubbard <jhubbard@...dia.com>
>>>>> Cc: Boris Ostrovsky <boris.ostrovsky@...cle.com>
>>>>> Cc: Juergen Gross <jgross@...e.com>
>>>>> Cc: David Vrabel <david.vrabel@...rix.com>
>>>>
>>>> Reviewed-by: Boris Ostrovsky <boris.ostrovsky@...cle.com>
>>> Are these 2 patches queued for 5.10-rc1 ?
>>
>>
>> Yes, I am preparing the branch. (BTW, your second patch appears to have been either manually edited or not generated on top of the first patch. Please don't do this next time)
> 
> I created it on top of the first one and didn't edit manually.
> I was able to apply it in my local repository.
> What was the error ?
> 


Patch 1:

+		if (batch->writeable && !PageDirty(batch->pages[i]))


Patch 2:

-		if(batch->writeable && !PageDirty(batch->pages[i]))



This doesn't look to me like usual whitespace damage in-flight. Anyway, this has been applied to for-linus-5.10


-boris