linux-kernel - Re: [RFC][PATCH 0/7] locking/rwsem: Convert rwsem count to atomic_long

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Date:	Fri, 3 Jun 2016 16:31:54 -0700
From:	Linus Torvalds <torvalds@...ux-foundation.org>
To:	Peter Zijlstra <peterz@...radead.org>
Cc:	Ingo Molnar <mingo@...nel.org>, Jason Low <jason.low2@....com>,
	Ingo Molnar <mingo@...hat.com>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Richard Henderson <rth@...ddle.net>,
	Ivan Kokshaysky <ink@...assic.park.msu.ru>,
	Matt Turner <mattst88@...il.com>,
	Tony Luck <tony.luck@...el.com>,
	Fenghua Yu <fenghua.yu@...el.com>,
	Martin Schwidefsky <schwidefsky@...ibm.com>,
	Terry Rudd <terry.rudd@....com>,
	Heiko Carstens <heiko.carstens@...ibm.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Arnd Bergmann <arnd@...db.de>,
	Christoph Lameter <cl@...ux.com>,
	Davidlohr Bueso <dave@...olabs.net>,
	Waiman Long <Waiman.Long@....com>,
	Tim Chen <tim.c.chen@...ux.intel.com>,
	Peter Hurley <peter@...leysoftware.com>,
	Jason Low <jason.low2@...com>
Subject: Re: [RFC][PATCH 0/7] locking/rwsem: Convert rwsem count to atomic_long_t

On Fri, Jun 3, 2016 at 5:00 AM, Peter Zijlstra <peterz@...radead.org> wrote:
> On Fri, Jun 03, 2016 at 10:04:07AM +0200, Ingo Molnar wrote:
>>
>> btw., for some reason I don't have the mails from Jason in my mbox, perhaps GMail
>> spam filtering ate it?
>
> Linus has been complaining about a lot of lost email due to gmail's idea
> of what constitutes spam, so that's entirely possible.

What has happened lately is that gmail has become a _lot_ stricter
about bad email setups. That should not affect the emails from Jason
as far as I can see.

Both broadcom.com and microsoft.com end up having DMARC records, and
email from those domains should have a DKIM signature. And people
inside broadcom and microsoft that had mis-configured smtp server
setups would send out email without that, and gmail seems to have
become much less lax about this, and almost automatically marks them
as spam.

Gmail also seems to notice when some smtp servers send out a lot of
bulk email, and will have a rule that such sites need to also do
proper SPF or DKIM. This hit the tip-bot, for example, which does
neither.

And I can't really say that I'm "complaining" about it. I've
complained about the gmail spam filtering in the past, but while these
problems have been a bit of an annoyance, I think gmail is at least
trying to do the right thing. It's not that I love SPF or DKIM, but I
do think that badly configured smtp servers are a real problem too.

Jason's emails at least have SPF, so they should not be hated upon by
gmail (although spf and mailing lists don't work so well together, but
Ingo was on the direct recipients list, so..).

That said, I've made it a habit of just having one browser tab open
with the spambox, and going through it every day. I've also tried to
let people know when their smtp setup is bogus, although with both
broadcom and microsoft there were several engieers involved and I
ended up instead just asking them to try to educate their cow-orkers
internally, because I couldn't be arsed to remember who I had already
notified..

             Linus