linux-kernel - Re: [take34 0/10] kevent: Generic event handling mechanism.

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Message-ID: <20070125225634.GA9905@2ka.mipt.ru>
Date:	Fri, 26 Jan 2007 01:56:34 +0300
From:	Evgeniy Polyakov <johnpol@....mipt.ru>
To:	linux-kernel@...r.kernel.org
Cc:	David Miller <davem@...emloft.net>,
	Ulrich Drepper <drepper@...hat.com>,
	Andrew Morton <akpm@...l.org>, netdev <netdev@...r.kernel.org>,
	Zach Brown <zach.brown@...cle.com>,
	Christoph Hellwig <hch@...radead.org>,
	Chase Venters <chase.venters@...entec.com>,
	Johann Borck <johann.borck@...sedata.com>,
	linux-kernel@...r.kernel.org, Jeff Garzik <jeff@...zik.org>,
	Jamal Hadi Salim <hadi@...erus.ca>,
	Ingo Molnar <mingo@...e.hu>, linux-fsdevel@...r.kernel.org
Subject: Re: [take34 0/10] kevent: Generic event handling mechanism.

On Thu, Jan 25, 2007 at 04:48:30PM +0300, Evgeniy Polyakov (johnpol@....mipt.ru) wrote:
> Changes from 'take33' patchset:
>  * Added optional header pointer and its size into aio_sendfile_path(), 
>    which allows to send header and file in one syscall instead of
>    send(header), open file, sendfile(file).

Btw, aio_sendfile and aio_sendfile_path use naive and actually the 
simplest approach of async IO - it just stupidly blocks on sending or 
resends (like repeated sending approach) - I'm a bit lazy to use kevent 
there, since there is _no_ gain after a bit more deep analysis 
(hint: there are multiple IO threads, some of them might block), 
and network AIO does not exist (yet, kevent status is in hinged state,
and I was asked to postpone additional feature addons, which otherwise
could happen a bit more frequently then current kevent/kernel releases), 
due to kevent future is indeterminate...

-- 
	Evgeniy Polyakov
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