linux-kernel - Re: Need information on elevator_dispatch

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Message-ID: <472868B7.6010702@gelato.unsw.edu.au>
Date:	Wed, 31 Oct 2007 22:36:23 +1100
From:	Aaron Carroll <aaronc@...ato.unsw.edu.au>
To:	Philipp Gruber <philipp.gruber@...pps.net>
CC:	linux-kernel@...r.kernel.org
Subject: Re: Need information on elevator_dispatch_fn

Philipp Gruber wrote:
> So I need to 'reactivate' the whole dispatching process again. The only
> way to to this is probably a timer, but I couldn't get this working
> since I don't understand what calls dispatch_fn.

Hi Philipp,

Take a look how the AS and CFQ schedulers implement this.  In fact, the
CFQ scheduler implements policy similar to what you described.
as_work_handler() in block/as-iosched.c might be a good starting point.

-- Aaron

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