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    SubjectRe: [PATCH] [RFC] Add support for uevents on block device idle changes
    On Mon, Nov 23, 2009 at 12:37:49AM +0100, Pavel Machek wrote:
    > 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.

    Yeah, but 50 seconds isn't the timescale we're talking about here.

    --
    Matthew Garrett | mjg59@srcf.ucam.org


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