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docs: submitting-patches: make section about the Link: tag more explicit

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Mention the 'Link' tag in the section about adding URLs to the commit
msg, to make it clearer they "_primarily_ [...] should be about
background", as Linus recently stated (see the link below). That makes
the explanation also easier to find with a text search. For the same
reason and to improve comprehensibility provide an example, too.

Slightly improve the text at the same time to make it more obvious
developers are meant to add links to issue reports in mailing list
archives, as those allow regression tracking efforts to automatically
check which bugs got resolved.

Move the section also downwards slightly, to reduce jumping back and
forth between aspects relevant for the top and the bottom part of the
commit msg.

Link: https://lore.kernel.org/lkml/CAHk-=wgBhyLhQLPem1vybKNt7BKP+=qF=veBgc7VirZaXn4FUw@mail.gmail.com/
CC: Konstantin Ryabitsev <konstantin@linuxfoundation.org>
Signed-off-by: Thorsten Leemhuis <linux@leemhuis.info>
Reviewed-by: Konstantin Ryabitsev <konstantin@linuxfoundation.org>
Link: https://lore.kernel.org/r/27105768dc19b395e7c8e7a80d056d1ff9c570d0.1635152553.git.linux@leemhuis.info
[jc: tweaked wording following Konstantin's recommendation]
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
This commit is contained in:
Thorsten Leemhuis 2021-10-25 11:06:35 +02:00 committed by Jonathan Corbet
parent 3577cdb23b
commit 1f57bd42b7
1 changed files with 22 additions and 11 deletions
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33
Documentation/process/submitting-patches.rst
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@ -96,17 +96,6 @@ instead of "[This patch] makes xyzzy do frotz" or "[I] changed xyzzy
to do frotz", as if you are giving orders to the codebase to change
its behaviour.
If the patch fixes a logged bug entry, refer to that bug entry by
number and URL. If the patch follows from a mailing list discussion,
give a URL to the mailing list archive; use the https://lore.kernel.org/
redirector with a ``Message-Id``, to ensure that the links cannot become
stale.
However, try to make your explanation understandable without external
resources. In addition to giving a URL to a mailing list archive or
bug, summarize the relevant points of the discussion that led to the
patch as submitted.
If you want to refer to a specific commit, don't just refer to the
SHA-1 ID of the commit. Please also include the oneline summary of
the commit, to make it easier for reviewers to know what it is about.
@ -123,6 +112,28 @@ collisions with shorter IDs a real possibility. Bear in mind that, even if
there is no collision with your six-character ID now, that condition may
change five years from now.
If related discussions or any other background information behind the change
can be found on the web, add 'Link:' tags pointing to it. In case your patch
fixes a bug, for example, add a tag with a URL referencing the report in the
mailing list archives or a bug tracker; if the patch is a result of some
earlier mailing list discussion or something documented on the web, point to
it.
When linking to mailing list archives, preferably use the lore.kernel.org
message archiver service. To create the link URL, use the contents of the
``Message-Id`` header of the message without the surrounding angle brackets.
For example::
Link: https://lore.kernel.org/r/30th.anniversary.repost@klaava.Helsinki.FI/
Please check the link to make sure that it is actually working and points
to the relevant message.
However, try to make your explanation understandable without external
resources. In addition to giving a URL to a mailing list archive or bug,
summarize the relevant points of the discussion that led to the
patch as submitted.
If your patch fixes a bug in a specific commit, e.g. you found an issue using
``git bisect``, please use the 'Fixes:' tag with the first 12 characters of
the SHA-1 ID, and the one line summary. Do not split the tag across multiple