linux-kernel - Re: [PATCH/RFC] Re: recvmmsg() timeout behavior strangeness [RESEND]

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Message-ID: <20140527192115.GD25474@kernel.org>
Date:	Tue, 27 May 2014 16:21:15 -0300
From:	Arnaldo Carvalho de Melo <acme@...nel.org>
To:	"Michael Kerrisk (man-pages)" <mtk.manpages@...il.com>
Cc:	lkml <linux-kernel@...r.kernel.org>,
	"linux-man@...r.kernel.org" <linux-man@...r.kernel.org>,
	netdev <netdev@...r.kernel.org>,
	Ondřej Bílka <neleai@...nam.cz>,
	Caitlin Bestler <caitlin.bestler@...il.com>,
	Neil Horman <nhorman@...driver.com>,
	Elie De Brauwer <eliedebrauwer@...il.com>,
	David Miller <davem@...emloft.net>,
	Steven Whitehouse <steve@...gwyn.com>,
	Rémi Denis-Courmont 
	<remi.denis-courmont@...ia.com>, Paul Moore <paul@...l-moore.com>,
	Chris Friesen <chris.friesen@...driver.com>
Subject: Re: [PATCH/RFC] Re: recvmmsg() timeout behavior strangeness [RESEND]

Em Tue, May 27, 2014 at 06:35:17PM +0200, Michael Kerrisk (man-pages) escreveu:
> On 05/26/2014 11:17 PM, Arnaldo Carvalho de Melo wrote:
> > Can you try the attached patch on top of the first one?
 
> Patches on patches is a way to make your testers work unnecessarily
> harder. Also, it means that anyone else who was interested in this

It was meant to highlight the changes with regard to the previous patch,
i.e. to make things easier for reviewing.

> thread likely got lost at this point, because they probably didn't 
> save the first patch. All of this to say: it makes life much easier 
> if you provide a complete new self-contained patch on each iteration.

If you prefer it that way, find one attached, that I was about to send
(but you can wait till I use your program to test it ;-) )
 
> > It starts adding explicit parentheses on a ternary, as David requested,
> > and then should return the remaining timeouts in cases like signals,
> > etc.
> > 
> > Please let me know if this is enough.
> 
> Nope, it doesn't fix the problem. (I applied both patches against 3.15-rc7)

What was the problem experienced?
 
> > P.S. compile testing while sending this message :-)
> 
> Okay -- how about some real testing for the next version ;-). I've appended

Hey, you were provinding that real testing! thanks for that! :-)

> my test program below. You can use it as follows:
> 
> ./t_recvmmsg <port> <timeout-in-secs> <bufsize>...
> 
> (The timeout can also be '-' meaning use NULL as the timeout argument.)

Thanks for the test proggie, will use it.
 
> Cheers,
> 
> Michael
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