linux-kernel - Re: [RESEND][RFC PATCH v2] waitfd

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Message-Id: <1231622419.11642.197.camel@quest>
Date:	Sat, 10 Jan 2009 21:20:19 +0000
From:	Scott James Remnant <scott@...onical.com>
To:	Casey Dahlin <cdahlin@...hat.com>
Cc:	Oleg Nesterov <oleg@...hat.com>, Ingo Molnar <mingo@...e.hu>,
	Linux Kernel <linux-kernel@...r.kernel.org>,
	Randy Dunlap <randy.dunlap@...cle.com>,
	Roland McGrath <roland@...hat.com>,
	Davide Libenzi <davidel@...ilserver.org>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>
Subject: Re: [RESEND][RFC PATCH v2] waitfd

On Sat, 2009-01-10 at 16:14 -0500, Casey Dahlin wrote:

> From the perspective of waitfd, the only difference between WNOHANG and
> O_NONBLOCK is which argument you put the flags in. The API should only
> support one or the other, but internally they would imply the same thing.
> 
Well, you get O_NONBLOCK for free by having a file descriptor; and you
can't turn off people trying to turn it on/off with fcntl() - so you may
as well just use that, no? :-)

Scott
-- 
Scott James Remnant
scott@...onical.com

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