linux-kernel - Re: [patch 00/11] ANNOUNCE: "Syslets", generic asynchronous system call support

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Message-ID: <20070213215724.GD22104@elte.hu>
Date:	Tue, 13 Feb 2007 22:57:24 +0100
From:	Ingo Molnar <mingo@...e.hu>
To:	Davide Libenzi <davidel@...ilserver.org>
Cc:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Linus Torvalds <torvalds@...ux-foundation.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>,
	Ulrich Drepper <drepper@...hat.com>,
	Zach Brown <zach.brown@...cle.com>,
	Evgeniy Polyakov <johnpol@....mipt.ru>,
	"David S. Miller" <davem@...emloft.net>,
	Benjamin LaHaise <bcrl@...ck.org>,
	Suparna Bhattacharya <suparna@...ibm.com>,
	Thomas Gleixner <tglx@...utronix.de>
Subject: Re: [patch 00/11] ANNOUNCE: "Syslets", generic asynchronous system call support


* Davide Libenzi <davidel@...ilserver.org> wrote:

> > Open issues:

> If this is going to be a generic AIO subsystem:
> 
> - Cancellation of pending request

How about implementing aio_cancel() as a NOP. Can anyone prove that the 
kernel didnt actually attempt to cancel that IO? [but unfortunately 
failed at doing so, because the platters were being written already.]

really, what's the point behind aio_cancel()?

	Ingo
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