Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:18 as permitted sender) client-ip=2620:137:e000::1:18;
Message-ID: <d508b094-3d3e-46d1-d66c-cc759e6a8f5e@redhat.com>
Date:   Mon, 4 Apr 2022 10:43:35 +0200
MIME-Version: 1.0
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101
 Thunderbird/91.6.2
Content-Language: en-US
To:     Kalle Valo <kvalo@kernel.org>
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
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> <87mth3udl2.fsf@tynnyri.adurom.net>
From:   David Hildenbrand <david@redhat.com>
Organization: Red Hat
Subject: Re: [PATCH 1/2] mm: page_alloc: simplify pageblock migratetype check
 in __free_one_page().
In-Reply-To: <87mth3udl2.fsf@tynnyri.adurom.net>
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 7bit
Precedence: bulk

On 02.04.22 09:52, Kalle Valo wrote:
> 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 :)
> 

It is strange. Also mails from Andrew result in the same,
unusable/unreadable mails in my inbox. :(

Right now I assume that Mimecast servers try to auto-detecting and
adding "Content-type:", and somehow mess up. And I do think that it
doesn't always mess up; some patch content (encoding?) seems to trigger
that.


-- 
Thanks,

David / dhildenb