netdev - Re: [PATCH 6/8] netpoll: Allow netpoll

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Message-ID: <20100625100822.GX10441@laptop>
Date:	Fri, 25 Jun 2010 20:08:22 +1000
From:	Nick Piggin <npiggin@...e.de>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	David Miller <davem@...emloft.net>, herbert@...dor.hengli.com.au,
	mst@...hat.com, frzhang@...hat.com, netdev@...r.kernel.org,
	amwang@...hat.com, shemminger@...tta.com, mpm@...enic.com,
	paulmck@...ux.vnet.ibm.com, a.p.zijlstra@...llo.nl, mingo@...e.hu
Subject: Re: [PATCH 6/8] netpoll: Allow netpoll_setup/cleanup recursion

On Thu, Jun 24, 2010 at 09:42:04PM -0700, Andrew Morton wrote:
> On Thu, 24 Jun 2010 21:27:13 -0700 (PDT) David Miller <davem@...emloft.net> wrote:
> 
> > From: Andrew Morton <akpm@...ux-foundation.org>
> > Date: Thu, 24 Jun 2010 20:50:59 -0700
> > 
> > > What happens if you want to actually *drop* a patch from net-next? 
> > > Surely that happens?
> > 
> > I've only respun the tree on two or three occasions and that was
> > because I made some significant error myself and screwed up the
> > GIT tree somehow.
> > 
> > We've fixed much worse bugs than this one weeks after the changes
> > causing them went in, life goes on.
> 
> Still sucks - this is a quite ugly drawback to how we're using git. 
> I've hit bisection holes several times which held up the show. 
> Sometimes you can make them go away by fiddling the .config, other
> times I've hunted down the fix and manually applied it for each
> iteration.  It makes me feel all guilty each time I ask some poor sap
> to bisect a bug for us.

This might be somewhat improved by tagging a fix with the id of the
patch causing the regression, so that bisect could go through and try
to apply a fix out of order.

This could be done with a specific note format in the changelog, but
I don't know whether it's realistic to support in git format or if
you'd have to have a tool that builds up a mapping going the other
way...

Could also be useful for distros backporting things.

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