linux-kernel - Re: Syslets, Threadlets, generic AIO support, v6

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Message-ID: <465DEEEE.8040702@goop.org>
Date:	Wed, 30 May 2007 14:38:54 -0700
From:	Jeremy Fitzhardinge <jeremy@...p.org>
To:	Ulrich Drepper <drepper@...hat.com>
CC:	Linus Torvalds <torvalds@...ux-foundation.org>,
	Ingo Molnar <mingo@...e.hu>, Jeff Garzik <jeff@...zik.org>,
	Zach Brown <zach.brown@...cle.com>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Arjan van de Ven <arjan@...radead.org>,
	Christoph Hellwig <hch@...radead.org>,
	Andrew Morton <akpm@....com.au>,
	Alan Cox <alan@...rguk.ukuu.org.uk>,
	Evgeniy Polyakov <johnpol@....mipt.ru>,
	"David S. Miller" <davem@...emloft.net>,
	Suparna Bhattacharya <suparna@...ibm.com>,
	Jens Axboe <jens.axboe@...cle.com>,
	Thomas Gleixner <tglx@...utronix.de>
Subject: Re: Syslets, Threadlets, generic AIO support, v6

Ulrich Drepper wrote:
> I don't like special cases.  For me things better come in quantities 0,
> 1, and unlimited (well, reasonable high limit).  Otherwise, who gets to
> use that special namespace?  The C library is not the only body of code
> which would want to use descriptors.

Valgrind could certainly make use of it.  It currently reserves a set of
fds "high enough", and tries hard to hide them from apps, but
/proc/self/fd makes it intractable in general (there was only so much
simulation I was willing to do in Valgrind).

    J
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