linux-kernel - Re: [PATCH 04/14] init: deps: order network interfaces by link order

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Date:	Sat, 17 Oct 2015 23:32:20 +0200
From:	Alexander Holler <holler@...oftware.de>
To:	Linus Torvalds <torvalds@...ux-foundation.org>
Cc:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Russell King <linux@....linux.org.uk>,
	Grant Likely <grant.likely@...aro.org>
Subject: Re: [PATCH 04/14] init: deps: order network interfaces by link order

Am 17.10.2015 um 21:08 schrieb Linus Torvalds:
> On Sat, Oct 17, 2015 at 12:01 PM, Alexander Holler <holler@...oftware.de> wrote:
>>
>> That isn't a flag day thing. It's a config option everyone can turn on and
>> off whenever he wants.
>
> That's a flag-day thing. We've done it (drm comes to mind - several times).
>
> I'm disappointed, because I _know_ I pointed you in the direction of
> stable sorting about a month ago. I really had hoped you'd have taken
> that into account.

Sorry, but I have to add another comment about that stable topological 
sort which can be easily found by searching the web.

As the author mentioned, he has done some search on that topic too and 
has found nothing. So, either I would have to trust his word (and his 
non-public proof) that it works or I would have to prove it myself.

Besides that he says it's based on bubble sort, which is known for its 
speed. So I would have had to write in C in order to see if the speed 
would be acceptable and would still be without any proof that it always 
works correctly.

Regards,

Alexander Holler
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