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Properties of a good Git commit (sort of subjective)

  • Subject (first) line (followed by blank line):
    • 60 char max (including subsystem name) for git log --oneline).
      8c7ae38d1ce1 afs: Fix StoreData op marshalling
      7d6ab823d646 vfs: Update mount API docs
      b6ffdf27f3d4 s390/cpumf: Fix warning from check_processor_id
      01f2f5b82a2b SUNRPC: fix uninitialized variable warning
      8c838f53e149 dpaa2-eth: fix race condition with bql frame accounting
      047a013f8d0a chelsio: use BUG() instead of BUG_ON(1)
    • Be accurate.
    • Use the imperative mood (“Fix”, “Adjust”, “Correct”).
    • Don't capitalize the first word.
    • No ending period.
    • Is this changing functionality, or just fixing docs/comments.
  • Commits themselves:
    • Well-defined and modular, for future cherry picking or reverting.
    • Complete; use git commit --amend to assure this.
  • Commit messages:
    • What is being changed, what functionality is being affected (if any).
    • Why it is being changed.
    • References to discussions about this commit (people, mailing lists).
    • Level of testing this commit has had.
    • Names of others who have ACKed/tested/reviewed this commit.
    • References to bug tracker items (JIRA) this commit is addressing.

Some examples


$ git show --summary 6ff005cf19363382fc867d7876a75fd8a386e894
commit 6ff005cf19363382fc867d7876a75fd8a386e894
Author: Dave Prue <>
Date:   Thu Aug 31 19:21:01 2017 +0200

    sunxi: Fix CONFIG_SUNXI_GMAC references
    SUNXI_GMAC was still used to configure the code where as the
    same has been renamed and moved to Kconfig in below commit
    "sunxi: Move SUNXI_GMAC to Kconfig"
    (sha1: 4d43d065db3262f9a9918ba72457bf36dfb8e0bb)
    Signed-off-by: Dave Prue <>
    Reviewed-by: Simon Glass <>
    Reviewed-by: Jagan Teki <>
    Reviewed-by: Mark Kettenis <>
    Tested-by: Mark Kettenis <>
    [Tweek commit message, config_whitelist.txt,]
    Signed-off-by: Jagan Teki <>
git_good_commits.txt · Last modified: 2019/04/03 20:30 by rpjday