linux-kernel - Re: [PATCH 1/2] mm: page_alloc: simplify pageblock migratetype check in __free_one

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Date:   Sat, 02 Apr 2022 10:52:25 +0300
From:   Kalle Valo <kvalo@...nel.org>
To:     David Hildenbrand <david@...hat.com>
Cc:     Zi Yan <ziy@...dia.com>, linux-mm@...ck.org,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Steven Rostedt <rostedt@...dmis.org>,
        Vlastimil Babka <vbabka@...e.cz>,
        Mel Gorman <mgorman@...hsingularity.net>,
        Mike Rapoport <rppt@...nel.org>,
        Oscar Salvador <osalvador@...e.de>,
        Andrew Morton <akpm@...ux-foundation.org>,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/2] mm: page_alloc: simplify pageblock migratetype check in __free_one_page().

Kalle Valo <kvalo@...nel.org> writes:

> David Hildenbrand <david@...hat.com> writes:
>
>> On 01.04.22 16:22, David Hildenbrand wrote:
>>> On 01.04.22 16:19, Zi Yan wrote:
>>>> On 1 Apr 2022, at 10:12, David Hildenbrand wrote:
>>>>
>>>>> On 01.04.22 15:58, Zi Yan wrote:
>>>>>
>>>>> It's weird, your mails arrive on my end as empty body with attachment. I
>>>>> first suspected Thunderbird, but I get the same result on the google
>>>>> mail web client.
>>>>>
>>>>> Not sure why that happens.
>>>>
>>>> No idea. They look fine (except mangled links by outlook) on my outlook
>>>> desk client and web client on my side. lore looks OK too:
>>>> https://lore.kernel.org/linux-mm/20220401135820.1453829-1-zi.yan@sent.com/
>>> 
>>> I can spot in the raw mail I receive
>>> 
>>> "Content-Type: application/octet-stream; x-default=true"
>>> 
>>> But that seems to differ to the lore mail:
>>> 
>>> https://lore.kernel.org/linux-mm/20220401135820.1453829-1-zi.yan@sent.com/raw
>>> 
>>> 
>>> Maybe something in my mail server chain decides to do some nasty
>>> conversion (grml, wouldn't be the first time)
>>> 
>>
>> Weird thing is that this only happens with your mails. I opened an
>> internal ticket, sorry for the noise.
>
> Zi's patch emails I received didn't have Content-Type, that might have
> something to do with this. (But his reply later in the thread did have
> one.) Also last week I got one patch email with no Content-Type either
> and my Gnus decided to convert it to octet-stream, I guess to be on the
> safe side. No idea if something similar is happening to you, but wanted
> to mention it anyway.

Just to clarify, I assumed Gnus was doing the conversion to octet-stream
but I never verified that.

Heh, interestingly enough that patch was sent from redhat.com:

https://lore.kernel.org/all/877d8eyz61.fsf@kernel.org/

Is that just a coincidence or are Redhat servers doing something
strange? If you find out, do let me know. I'm very curious :)

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