From: Chris Friesen <chris_friesen@sympatico.ca>
To: linux-hotplug@vger.kernel.org
Subject: Re: [PATCH] closing the loop -- retries and acks
Date: Thu, 19 Feb 2004 05:44:48 +0000 [thread overview]
Message-ID: <40344D50.6080802@sympatico.ca> (raw)
In-Reply-To: <403305A3.2070604@sympatico.ca>
Kay Sievers wrote:
> On Wed, Feb 18, 2004 at 01:26:43AM -0500, Chris Friesen wrote:
>
>>This patch reduces the already low chances of lost messages.
> It's sweet.
> But isn't the case of handling a lost a message purely theroretical?
Sure. But then, all error handling is theoretical.
> What problem we actually have is solved with this infrastructure?
> A possibly crashing or exiting udevd in the time window from accepting
> our message until its execution?
Yes. Which could be up to 5 seconds if the sequence number is wrong.
> Is the handling of this special case really needed?
That's up to Greg, I guess.
> Oh, and we don't handle a crashing udev :)
We would if this patch was added...
> We have a remaining risk all over the place and it seems that we try to
> look better than the whole picture. We have failure paths with much
> much higher propability.
>
> So, it's nice, sure.
> But is it worth the extra complexity?
That is indeed the question. It would be nice to lock down every
possible problem, but I don't know if that's feasable.
Chris
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next prev parent reply other threads:[~2004-02-19 5:44 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-02-18 6:26 [PATCH] closing the loop -- retries and acks Chris Friesen
2004-02-18 8:27 ` Kay Sievers
2004-02-19 5:44 ` Chris Friesen [this message]
2004-02-19 7:52 ` Kay Sievers
2004-02-21 0:43 ` Greg KH
2004-02-21 0:44 ` Greg KH
2004-02-22 3:48 ` Chris Friesen
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