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Date: Wed, 30 May 2007 17:27:15 -0500
From: Matt Mackall <mpm@selenic.com>
To: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Davide Libenzi <davidel@xmailserver.org>, Ingo Molnar <mingo@elte.hu>,
       Ulrich Drepper <drepper@redhat.com>, Jeff Garzik <jeff@garzik.org>,
       Zach Brown <zach.brown@oracle.com>,
       Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
       Arjan van de Ven <arjan@infradead.org>,
       Christoph Hellwig <hch@infradead.org>, Andrew Morton <akpm@zip.com.au>,
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       "David S. Miller" <davem@davemloft.net>,
       Suparna Bhattacharya <suparna@in.ibm.com>,
       Jens Axboe <jens.axboe@oracle.com>,
       Thomas Gleixner <tglx@linutronix.de>
Subject: Re: Syslets, Threadlets, generic AIO support, v6
Message-ID: <20070530222715.GK11166@waste.org>
References: <20070529212718.GH7875@mami.zabbo.net> <465CA654.5000505@garzik.org> <20070530072055.GA3077@elte.hu> <465D286E.2080807@redhat.com> <20070530084252.GA15708@elte.hu> <Pine.LNX.4.64.0705301148150.6272@alien.or.mcafeemobile.com> <alpine.LFD.0.98.0705301254210.26602@woody.linux-foundation.org>
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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.

Or.. we could have a method of swizzling in and out an entire FD
array, similar to UML's trick for swizzling MMs.

-- 
Mathematics is the supreme nostalgia of our time.
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