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

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Date:	Wed, 30 May 2007 15:38:57 -0700
From:	William Lee Irwin III <wli@...omorphy.com>
To:	Matt Mackall <mpm@...enic.com>
Cc:	Linus Torvalds <torvalds@...ux-foundation.org>,
	Davide Libenzi <davidel@...ilserver.org>,
	Ingo Molnar <mingo@...e.hu>,
	Ulrich Drepper <drepper@...hat.com>,
	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

On Wed, May 30, 2007 at 01:00:30PM -0700, Linus Torvalds wrote:
>> Which *could* be something as simple as saying "bit 30 in the file 
>> descriptor specifies a separate fd space" along with some flags to make 
>> open and friends return those separate fd's. That makes them useless for 
>> "select()" (which assumes a flat address space, of course), but would be 
>> useful for just about anything else.

On Wed, May 30, 2007 at 05:27:15PM -0500, Matt Mackall wrote:
> Or.. we could have a method of swizzling in and out an entire FD
> array, similar to UML's trick for swizzling MMs.

I like that notion even better than randomization. I think it should
happen. I like SKAS, too, of course.


-- wli
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