linux-kernel - Re: [PATCH 1/2] percpu_counter: batch size aware __percpu_counter

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Message-ID: <20150506061157.GD4327@dastard>
Date:	Wed, 6 May 2015 16:11:57 +1000
From:	Dave Chinner <david@...morbit.com>
To:	Christoph Hellwig <hch@...radead.org>
Cc:	linux-kernel@...r.kernel.org, xfs@....sgi.com
Subject: Re: [PATCH 1/2] percpu_counter: batch size aware
 __percpu_counter_compare()

On Wed, May 06, 2015 at 03:53:49PM +1000, Dave Chinner wrote:
> On Wed, May 06, 2015 at 03:43:10PM +1000, Dave Chinner wrote:
> > On Tue, May 05, 2015 at 09:36:36PM -0700, Christoph Hellwig wrote:
> > > This looks reasonable, but I miss Ccs to the authors of the
> > > percpu_counter code and linux-kernel.
> > 
> > linux-kernel was cc'd.
> > 
> > > On Wed, May 06, 2015 at 08:01:38AM +1000, Dave Chinner wrote:
> > > > From: Dave Chinner <dchinner@...hat.com>
> > > > 
> > > > From: Dave Chinner <dchinner@...hat.com>
> > > 
> > > And this looks wrong, too :)
> > 
> > That looks like a change of tool behaviour. I just upgraded guilt;
> > the old version stripped "from" lines in patch descriptions from the
> > git commit log as goes into the author field of the commit. The new
> > version does not appear to strip the from lines, and so when
> > git-send-email formats it, it puts a from line in the message, and
> > then the commit message has one too.
> 
> Ok, so I remembered it the wrong way around, but it is a tool bug:
> 
> $ guilt patchbomb -s d480578..cd83c77
> cd83c773 xfs: inode counter needs to use __percpu_counter_compare
> 1e41b5ad percpu_counter: batch size aware __percpu_counter_compare()
> Are these what you want to send? [Y/n]
> ....
> 
> Note the use of "-s". from the man page:
> 
>        -s
> 	   Don't add additional repository committer sign-offs to
> 	   the patch.  This allows the sign-off chain to be fully
> 	   expressed in the commit messages and not changed by the
> 	   act of sending a patchbomb.
> 
> It would appear that the "-s" option is not working properly. I'll
> fix that before sending the next round of patches....

<sigh>

So, the packaged version of guilt on a brand new debian unstable
installation is actually older than the 2 year version of guilt I
had previously installed and used on a different machine. IOWs, the
debian distro version has this bug in it:

http://repo.or.cz/w/guilt.git?a=commit;h=8f88f953580a0cacf111bf64c0e838014ee30c01

Yeah, that was fixed more than 3 years ago. Oh well, back to using
a locally installed version...

Cheers,

Dave.
-- 
Dave Chinner
david@...morbit.com
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