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

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20091122233749.GA9699@ucw.cz>
Date:	Mon, 23 Nov 2009 00:37:49 +0100
From:	Pavel Machek <pavel@....cz>
To:	Matthew Garrett <mjg59@...f.ucam.org>
Cc:	Kay Sievers <kay.sievers@...y.org>, 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 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.
-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/