mailmap: initial, trying to tidy up a lot of the commit history

This comes from the observation that a huge number of commit author
fields look quite strange (to my eyes), but quite often the
Signed-off-by: trailer has the correct name. For these I have updated
the name where it was obvious how to do so, however, I have not created
a mapping for the commit email to the Signed-off-by email, as whatever I
choose for email will become the prime candidate for inclusion in the
AUTHORS file, and care needs to be taken when acting without explicit
consent.

There's a small handful of commits that look like they were done on
local machines, or CI hosts, or similar, where the git authorship config
wasn't set up properly. Its obvious what this should look like, so I've
just done them.

The remainder is mapping Github noreply emails to either an
obviously-correct Signed-off-by trailer, or to a an author from another
commit. This was mostly done by hand, so there may be errors, but I
think its close. I do not understand where these come from - I know that
they're what commits made via Github web look like when there's no real
address set on the account, but I find it hard to believe that so many
of these came through the web, especially given the complexity of most
of the changes. I suspect there's some kind of merge helper tool in play
here. Regardless, the history is set now, and this tries to get it back
on track.

Obviously, all of this helps the history look tidy, but this also feeds
into the AUTHORS update script. See next commit.

Reviewed-by: Brian Behlendorf <[email protected]>
Reviewed-by: Tino Reichardt <[email protected]>
Signed-off-by: Rob Norris <[email protected]>
Closes #15374

2 files changed, 190 insertions, 0 deletions

diff --git a/.gitignore b/.gitignore
index 1ef47d921..47d17ae16 100644
--- a/.gitignore
+++ b/.gitignore
@@ -45,6 +45,7 @@
 !.cirrus.yml
 !.gitignore
 !.gitmodules
+!.mailmap
 !AUTHORS
 !autogen.sh
 !CODE_OF_CONDUCT.md
diff --git a/.mailmap b/.mailmap
new file mode 100644
index 000000000..46ef016b9
--- /dev/null
+++ b/.mailmap
@@ -0,0 +1,189 @@
+# This file maps the name+email seen in a commit back to a canonical
+# name+email. Git will replace the commit name/email with the canonical version
+# wherever it sees it.
+#
+# If there is a commit in the history with a "wrong" name or email, list it
+# here. If you regularly commit with an alternate name or email address and
+# would like to ensure that you are always listed consistently in the repo, add
+# mapping here.
+#
+# On the other hand, if you use multiple names or email addresses legitimately
+# (eg you use a company email address for your paid OpenZFS work, and a
+# personal address for your evening side projects), then don't map one to the
+# other here.
+#
+# The most common formats are:
+#
+# Canonical Name <canonical-email>
+# Canonical Name <canonical-email> <commit-email>
+# Canonical Name <canonical-email> Commit Name <commit-email>
+#
+# See https://git-scm.com/docs/gitmailmap for more info.
+
+# These maps are making names consistent where they have varied but the email
+# address has never changed. In most cases, the full name is in the
+# Signed-off-by of a commit with a matching author.
+Ahelenia Ziemiańska <[email protected]>
+Ahelenia Ziemiańska <[email protected]>
+Alex John <[email protected]>
+Andreas Dilger <[email protected]>
+Andrew Walker <[email protected]>
+Benedikt Neuffer <[email protected]>
+Chengfei Zhu <[email protected]>
+Chris Lindee <[email protected]>
+Colm Buckley <[email protected]>
+Crag Wang <[email protected]>
+Damian Szuberski <[email protected]>
+Daniel Kolesa <[email protected]>
+Debabrata Banerjee <[email protected]>
+Finix Yan <[email protected]>
+Gaurav Kumar <[email protected]>
+Gionatan Danti <[email protected]>
+Glenn Washburn <[email protected]>
+Gordan Bobic <[email protected]>
+Gregory Bartholomew <[email protected]>
+hedong zhang <[email protected]>
+InsanePrawn <[email protected]>
+Jason Cohen <[email protected]>
+Jason Harmening <[email protected]>
+Jeremy Faulkner <[email protected]>
+Jinshan Xiong <[email protected]>
+John Poduska <[email protected]>
+Justin Scholz <[email protected]>
+Ka Ho Ng <[email protected]>
+Kash Pande <[email protected]>
+Kay Pedersen <[email protected]>
+KernelOfTruth <[email protected]>
+Liu Hua <[email protected]>
+Liu Qing <[email protected]>
+loli10K <[email protected]>
+Matthias Blankertz <[email protected]>
+Michael Gmelin <[email protected]>
+Olivier Mazouffre <[email protected]>
+Piotr Kubaj <[email protected]>
+Quentin Zdanis <[email protected]>
+Roberto Ricci <[email protected]>
+Rob Norris <[email protected]>
+Rob Norris <[email protected]>
+Sam Lunt <[email protected]>
+Sanjeev Bagewadi <[email protected]>
+Stoiko Ivanov <[email protected]>
+Tamas TEVESZ <[email protected]>
+WHR <[email protected]>
+Yanping Gao <[email protected]>
+Youzhong Yang <[email protected]>
+
+# Commits from strange places, long ago
+Brian Behlendorf <[email protected]> <behlendo@7e1ea52c-4ff2-0310-8f11-9dd32ca42a1c>
+Brian Behlendorf <[email protected]> <behlendo@fedora-17-amd64.(none)>
+Brian Behlendorf <[email protected]> <behlendo@myhost.(none)>
+Brian Behlendorf <[email protected]> <[email protected]>
+Brian Behlendorf <[email protected]> <[email protected]>
+Herb Wartens <[email protected]> <wartens2@7e1ea52c-4ff2-0310-8f11-9dd32ca42a1c>
+Ned Bass <[email protected]> <bass6@zeno1.(none)>
+Tulsi Jain <[email protected]> <[email protected]>
+
+# Mappings from Github no-reply addresses
+ajs124 <[email protected]> <[email protected]>
+Alek Pinchuk <[email protected]> <[email protected]>
+Alexander Lobakin <[email protected]> <[email protected]>
+Alexey Smirnoff <[email protected]> <[email protected]>
+Allen Holl <[email protected]> <[email protected]>
+Ameer Hamza <[email protected]> <[email protected]>
+Andrew J. Hesford <[email protected]> <[email protected]>>
+Andrew Sun <[email protected]> <[email protected]>
+Aron Xu <[email protected]> <[email protected]>
+Arun KV <[email protected]> <[email protected]>
+Ben Wolsieffer <[email protected]> <[email protected]>
+bernie1995 <[email protected]> <[email protected]>
+Boris Protopopov <[email protected]> <[email protected]>
+Brad Forschinger <[email protected]> <[email protected]>
+Brandon Thetford <[email protected]> <[email protected]>
+buzzingwires <[email protected]> <[email protected]>
+Cedric Maunoury <[email protected]> <[email protected]>
+Charles Suh <[email protected]> <[email protected]>
+Dacian Reece-Stremtan <[email protected]> <[email protected]>
+Damian Szuberski <[email protected]> <[email protected]>
+Daniel Hiepler <[email protected]> <[email protected]>
+Daniel Kobras <[email protected]> <[email protected]>
+Daniel Reichelt <[email protected]> <[email protected]>
+David Quigley <[email protected]> <[email protected]>
+DHE <[email protected]> <[email protected]>
+Dmitri John Ledkov <[email protected]> <[email protected]>
+Dries Michiels <[email protected]> <[email protected]>
+Edmund Nadolski <[email protected]> <[email protected]>
+Érico Nogueira <[email protected]> <[email protected]>
+Fedor Uporov <[email protected]> <[email protected]>
+Felix Dörre <[email protected]> <[email protected]>
+Felix Neumärker <[email protected]> <[email protected]>
+Finix Yan <[email protected]> <[email protected]>
+Gaurav Kumar <[email protected]> <[email protected]>
+George Gaydarov <[email protected]> <[email protected]>
+Georgy Yakovlev <[email protected]> <[email protected]>
+Gerardwx <[email protected]> <[email protected]>
+Gian-Carlo DeFazio <[email protected]> <[email protected]>
+Giuseppe Di Natale <[email protected]> <[email protected]>
+Hajo Möller <[email protected]> <[email protected]>
+Harry Mallon <[email protected]> <[email protected]>
+Hiếu Lê <[email protected]> <[email protected]>
+Jake Howard <[email protected]> <[email protected]>
+James Cowgill <[email protected]> <[email protected]>
+Jason King <[email protected]> <[email protected]>
+Jeff Dike <[email protected]> <[email protected]>
+Jitendra Patidar <[email protected]> <[email protected]>
+João Carlos Mendes Luís <[email protected]> <[email protected]>
+John Eismeier <[email protected]> <[email protected]>
+John L. Hammond <[email protected]> <[email protected]>
+John-Mark Gurney <[email protected]> <[email protected]>
+John Ramsden <[email protected]> <[email protected]>
+Jonathon Fernyhough <[email protected]> <[email protected]>
+Justin Hibbits <[email protected]> <[email protected]>
+Kevin Jin <[email protected]> <[email protected]>
+Kevin P. Fleming <[email protected]> <[email protected]>
+Krzysztof Piecuch <[email protected]> <[email protected]>
+Kyle Evans <[email protected]> <[email protected]>
+Laurențiu Nicola <[email protected]> <[email protected]>
+loli10K <[email protected]> <[email protected]>
+Lorenz Hüdepohl <[email protected]> <[email protected]>
+Luís Henriques <[email protected]> <[email protected]>
+Marcin Skarbek <[email protected]> <[email protected]>
+Matt Fiddaman <[email protected]> <[email protected]>
+Max Zettlmeißl <[email protected]> <[email protected]>
+Michael Niewöhner <[email protected]> <[email protected]>
+Michael Zhivich <[email protected]> <[email protected]>
+Mo Zhou <[email protected]> <[email protected]>
+Nick Mattis <[email protected]> <[email protected]>
+omni <[email protected]> <[email protected]>
+Pablo Correa Gómez <[email protected]> <[email protected]>
+Paul Zuchowski <[email protected]> <[email protected]>
+Peter Ashford <[email protected]> <[email protected]>
+Peter Dave Hello <[email protected]> <[email protected]>
+Peter Wirdemo <[email protected]> <[email protected]>
+Petros Koutoupis <[email protected]> <[email protected]>
+Ping Huang <[email protected]> <[email protected]>
+Piotr P. Stefaniak <[email protected]> <[email protected]>
+Richard Allen <[email protected]> <[email protected]>
+Rich Ercolani <[email protected]> <[email protected]>
+Rob Wing <[email protected]> <[email protected]>
+Roman Strashkin <[email protected]> <[email protected]>
+Ryan Hirasaki <[email protected]> <[email protected]>
+Samuel Wycliffe J <[email protected]> <[email protected]>
+Samuel Wycliffe <[email protected]> <[email protected]>
+Savyasachee Jha <[email protected]> <[email protected]>
+Scott Colby <[email protected]> <[email protected]>
+Sean Eric Fagan <[email protected]> <[email protected]>
+Spencer Kinny <[email protected]> <[email protected]>
+Srikanth N S <[email protected]> <[email protected]>
+Thomas Geppert <[email protected]> <[email protected]>
+Tim Crawford <[email protected]> <[email protected]>
+Tom Matthews <[email protected]> <[email protected]>
+Tony Perkins <[email protected]> <[email protected]>
+Torsten Wörtwein <[email protected]> <[email protected]>
+Tulsi Jain <[email protected]> <[email protected]>
+Václav Skála <[email protected]> <[email protected]>
+Violet Purcell <[email protected]> <[email protected]>
+Vipin Kumar Verma <[email protected]> <[email protected]>
+Wolfgang Bumiller <[email protected]> <[email protected]>
+xtouqh <[email protected]> <[email protected]>
+Yuri Pankov <[email protected]> <[email protected]>
+Yuri Pankov <[email protected]> <[email protected]>