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

Pavel Machek
2009-11-23T14:12:07Z

On Wed 2009-11-18 20:07:12, Matthew Garrett wrote:
> 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.

...when you add overhead to every disk operation. I'd say that polling
once in 50 seconds is preferable to that.
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