Re: [Q] merging from one (kernel) stable to another?

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On Mon, Mar 30, 2009 at 10:24:08AM +0200, Brian Foster wrote:
>   Whilst this question involves linux(-mips) kernel tree,
>  it's a git(-related?) question, not a kernel question ....
> 
>   We are currently in the process of upgrading our embedded
>  system from kernel 2.6.21(-ish) to at least 2.6.26.8;  and
>  later, at some time in the future on to 2.6.3x or something.
>  Going from 2.6.21 to .22 to .23 and so on to .26, then to
>  .26.1 and so on to .26.8 is “easy” in the sense there are
>  very few conflicts with our existing baseline (e.g., just
>  2 or 3 in 2 or 3 files).
> 
>   .21 --> me --> .22 --> .23 ... --> .26 --> .27 --> master
>      \              \       \           \      \
>      .21-stable  .22-stable .23-stable   \     .27-stable
>                                         .26.8
>                                            \
>                                            .26-stable
> 
>   But (using 2.6.21-stable and 2.6.22-stable as proxies),
>  tests indicate that going from .26.8 to .27 or anything
>  later will have numerous conflicts (100s? in more than
>  30 files).  Thinking about it, this isn't too surprising
>  since the -stable branches cherry-pick important/benign
>  fixes from later revisions.
Assuming you have your master on top of .21-stable and want to go to
.26-stable, the following might work better for you:

	$ git checkout -b mydot26stable .26-stable
	$ git merge -s ours .21-stable
	$ git checkout master
	$ git merge mydot26stable	

Note this is not tested, just came to my mind...

Best regards
Uwe

-- 
Pengutronix e.K.                              | Uwe Kleine-König            |
Industrial Linux Solutions                    | http://www.pengutronix.de/  |
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