[U-Boot-Users] Revised custodian git writeup

[Wolfgang Denk]

In message <4796726E.9030501 at ge.com> you wrote:
>
> 1) Master branch is for others to actively base from

others = mostly users aka non-developers

> 2) Master branch is updated just before a pull request

not necessarily only then, but updates should contain code that is
considered to be "good" from the custodian's point of view

> 3) No merge conflicts with the u-boot.git repo when Wolfgang pulls it

Ideally, yes.

> These appear to be contradictory goals.  #1 and #2 could be argued to 
> not be contradictory, but I'm not buying into that theory.  The point of 
> people pulling and testing is to find problem, which should be fixed 
> *before* a pull request.  If the master branch has broken code in it, 

Agreed. Please see previous messages.  My  idea  is  that  the  maste
rbranch  can  be  consider as kind of a "stable" branch - it is ahead
compared to the main repo in regards to the the  custodian's  special
topic,  but  considered stable. For testing, other branches should be
used (probably with an explicit "-testing" in their name).

> I'm not sure what happens (how git handles it) if patches are applied in 
> different orders.  What I'm thinking about is if custodians #1 and #2 

git has no notation of order or sequence. It is storing content only.
If you apply  N  independent,  non-overlapping  patches  in  arbitray
order,  the result will be the same. The individual commits will have
different ID's, but who cares?

> both issue a pull request.  Wolfgang pulls #1 and then #2.  What happens 
> to #2 when he does a merge with the master u-boot.git?  Does git insert 
> custodian #1 patches ahead of his existing (#2) patches, or do the 
> patches end up in a different order in the repos?

It doesn't matter as long as there are no conflicts.

> Then there is the merge conflict, which will be a result of the order 
> that Wolfgang pulls from the custodian repos.  How does a custodian 
> resolve a merge conflict without changing his branch's history?

That's a good point. I have to think about that one...

> (going home to soak my brain in ethanol)

The brain or the liver?

Best regards,

Wolfgang Denk

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