Subject: Re: Improvement suggestion for creation of next [Was: linux-next: manual merge of the dmaengine tree with the driver-core tree]

From: Stephen Rothwell <[email-masked]>
Date: Thu, 16 Sep 2021 16:27:40 +1000

Hi Uwe,

[Sorry this took so long]

On Wed, 28 Jul 2021 09:10:14 +0200 Uwe Kleine-König <[email-masked]> wrote:
>
> I intended to take a look at the resolution that Vinod pushed in his
> tree. To find his tree and the right branch my approach in such a
> situation is usually:
> 
> 	uwe@taurus:~/gsrc/linux$ git name-rev d9e5481fca74
> 	d9e5481fca74 tags/next-20210722~22^2~2
> 
> so it was merged in tags/next-20210722~22, looking at that I see:
> 
> 	uwe@taurus:~/gsrc/linux$ git show tags/next-20210722~22
> 	commit 65da974af6a0d913cde0cf59f517322bceac24a7
> 	...
> 	    Merge remote-tracking branch 'dmaengine/next'
> 
> and then I have to lookup what dmaengine/next means in next-20210722:
> 
> 	uwe@taurus:~/gsrc/linux$ git show next-20210722 | grep dmaen
> 	...
> 	+dmaengine	git	git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/dmaengine.git#next
> 	...
> 
> You could save me the last step if you used
> 
> 	git pull dmaengine next
> 
> instead of
> 
> 	git merge dmaengine/next
> 
> because then the commit message of tags/next-20210722~22 would be:
> 
> 	Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/dmaengine.git
> 
> which is much more useful than
> 
> 	Merge remote-tracking branch 'dmaengine/next'
> 
> . Otherwise the result should be the same (apart from fetching the
> changes a tad later maybe).

Thanks for the feed back.

I prefer to fetch all the trees (and run my checking scripts across
them independently of the merge/build cycle.  However, I have improved
the merge commit messages (I think).  Please check out today's
linux-next.  I have decided to remove the SHA1 from the message, as you
can see that from what is merged anyway.

Let me know if this is better for you.

-- 
Cheers,
Stephen Rothwell