linux-kernel - Re: [PATCH] [RFC] Add support for uevents on block device idle changes

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Date:	Wed, 18 Nov 2009 20:07:12 +0000
From:	Matthew Garrett <mjg59@...f.ucam.org>
To:	Kay Sievers <kay.sievers@...y.org>
Cc:	David Zeuthen <david@...ar.dk>, linux-kernel@...r.kernel.org,
	axboe@...nel.dk, linux-hotplug@...r.kernel.org
Subject: Re: [PATCH] [RFC] Add support for uevents on block device idle
	changes

On Wed, Nov 18, 2009 at 09:03:21PM +0100, Kay Sievers wrote:

> Sure, but what's wrong with reading that file every 50 seconds? Almost
> all boxes poll for media changes of optical drives and usb card
> readers anyway, so it's not that we are not doing stuff like this
> already.

We poll for media because there's no event-based way of avoiding it - in 
this case there is.
-- 
Matthew Garrett | mjg59@...f.ucam.org
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