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From:   Kalle Valo <kvalo@kernel.org>
To:     David Hildenbrand <david@redhat.com>
Cc:     Zi Yan <ziy@nvidia.com>, linux-mm@kvack.org,
        Linus Torvalds <torvalds@linux-foundation.org>,
        Steven Rostedt <rostedt@goodmis.org>,
        Vlastimil Babka <vbabka@suse.cz>,
        Mel Gorman <mgorman@techsingularity.net>,
        Mike Rapoport <rppt@kernel.org>,
        Oscar Salvador <osalvador@suse.de>,
        Andrew Morton <akpm@linux-foundation.org>,
        linux-kernel@vger.kernel.org
Subject: Re: [PATCH 1/2] mm: page_alloc: simplify pageblock migratetype check in __free_one_page().
References: <20220401135820.1453829-1-zi.yan@sent.com>
        <134f56da-e827-2d29-75ba-1ec88ae2b118@redhat.com>
        <66F9766D-A7D8-4310-9FA9-5EC8B2CC341C@nvidia.com>
        <85520c49-5ef9-25f2-d6fa-f8b26e5dfec2@redhat.com>
        <6696fb21-090c-37c6-77a7-79423cc9c703@redhat.com>
        <87sfqwszc2.fsf@tynnyri.adurom.net>
Date:   Sat, 02 Apr 2022 10:52:25 +0300
In-Reply-To: <87sfqwszc2.fsf@tynnyri.adurom.net> (Kalle Valo's message of
        "Sat, 02 Apr 2022 10:45:33 +0300")
Message-ID: <87mth3udl2.fsf@tynnyri.adurom.net>
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Kalle Valo <kvalo@kernel.org> writes:

> David Hildenbrand <david@redhat.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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