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Re: [PATCH RFC for-4.19] docs/checklist: Start tagging new dev windows
- To: Julien Grall <julien@xxxxxxx>, Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
- From: Jan Beulich <jbeulich@xxxxxxxx>
- Date: Tue, 16 Jul 2024 08:57:33 +0200
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- Cc: Stefano Stabellini <sstabellini@xxxxxxxxxx>, Oleksii Kurochko <oleksii.kurochko@xxxxxxxxx>, Xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxxx>
- Delivery-date: Tue, 16 Jul 2024 06:57:45 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 15.07.2024 18:58, Julien Grall wrote:
> On 15/07/2024 17:46, Andrew Cooper wrote:
>> Signed-off-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
>
> With one remark below:
>
> Reviewed-by: Julien Grall <jgrall@xxxxxxxxxx>
>
>> ---
>> CC: Jan Beulich <JBeulich@xxxxxxxx>
>> CC: Stefano Stabellini <sstabellini@xxxxxxxxxx>
>> CC: Julien Grall <julien@xxxxxxx>
>> CC: Oleksii Kurochko <oleksii.kurochko@xxxxxxxxx>
>>
>> This is about figuring out when a change was first introduced. Take
>> 10b719dc88 for example (completely random pick).
>>
>> The right answer is `git tag --contains $sha` and look for the oldest
>> RELEASE-$X. In this case it's Xen 4.6, but the tags are not numerically
>> sorted so the answer is towards the end of the list of 166 tags.
>>
>> The better answer would be to `git describe $sha` because git has an
>> algorithm
>> to do this nicely. In this case, it's 4.5.0-rc4-934-g10b719dc8830 because we
>> branch first and tag RELEASE-4.6.0 on the branch, rather than releasing off
>> master.
>>
>> With 0082626f35af (opening of the 4.6 tree) containing an annotated tag of
>> 4.6-dev, git describe now gives 4.6-dev-902-g10b719dc8830 which far more
>> helpful when doing code archeology.
>
> I think some of this explanation should be in the commit message.
Imo it could even be moved up verbatim.
Jan
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