linux-kernel - Re: [patch 00/13] Syslets, "Threadlets", generic AIO support, v3

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Message-ID: <20070227121328.GA18565@elte.hu>
Date:	Tue, 27 Feb 2007 13:13:28 +0100
From:	Ingo Molnar <mingo@...e.hu>
To:	Evgeniy Polyakov <johnpol@....mipt.ru>
Cc:	Theodore Tso <tytso@....edu>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Ulrich Drepper <drepper@...hat.com>,
	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>,
	Zach Brown <zach.brown@...cle.com>,
	"David S. Miller" <davem@...emloft.net>,
	Suparna Bhattacharya <suparna@...ibm.com>,
	Davide Libenzi <davidel@...ilserver.org>,
	Jens Axboe <jens.axboe@...cle.com>,
	Thomas Gleixner <tglx@...utronix.de>
Subject: Re: [patch 00/13] Syslets, "Threadlets", generic AIO support, v3


* Evgeniy Polyakov <johnpol@....mipt.ru> wrote:

> > [...]  But it is true that for most kernel programmers, threaded 
> > programming is much easier to understand, and we need to engineer 
> > the kernel for what will be maintainable for the majority of the 
> > kernel development community.
> 
> I understand that - and I totally agree.

why did you then write, just one mail ago, the exact opposite:

> And debugging state machine code has exactly the same complexity as 
> debugging multi-threading code - if not less...

the kernel /IS/ multi-threaded code.

which statement of yours is also patently, absurdly untrue. 
Multithreaded code is harder to debug than process based code, but it is 
still a breeze compared to complex state-machines...

	Ingo
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