[PATCH 0/5] shallow: extract a header file

[Taylor Blau <me@ttaylorr.com>]

Hi,

These few patches are based on a suggestion in [1] from Jonathan Nieder
and in [2] Junio. The gist of this series is to do the following three
things:

  1. Extract a new 'shallow.h' header to collect all of the functions
     that are related to shallow-ness, but defined in 'commit.h'.

  2. Add some documentation from the previous series where it could have
     benefited from it.

  3. Finally, introduce a thin wrapper type 'struct shallow_lock' which
     makes it a type-level error to unlock a non-shallow lock with
     '{commit,rollback}_shallow_file'.

The remainder of suggestions in [1] about the structure of t5537 I
decided to not address in this series, since I anticipate there is more
work there than I want to take on in this series alone.

Thanks in advance for your review!

[1]: https://lore.kernel.org/git/20200423011444.GG140314@google.com/
[2]: https://lore.kernel.org/git/xmqqy2qnidyy.fsf@gitster.c.googlers.com/

Taylor Blau (5):
  commit: make 'commit_graft_pos' non-static
  shallow: extract a header file for shallow-related functions
  commit: move 'unregister_shallow' to 'shallow.h'
  shallow.h: document '{commit,rollback}_shallow_file'
  shallow: use struct 'shallow_lock' for additional safety

 builtin.h              |  1 +
 builtin/receive-pack.c |  2 +-
 commit.c               | 16 ++-------
 commit.h               | 49 +-------------------------
 fetch-pack.c           |  3 +-
 send-pack.c            |  1 +
 shallow.c              | 36 +++++++++++++------
 shallow.h              | 78 ++++++++++++++++++++++++++++++++++++++++++
 upload-pack.c          |  1 +
 9 files changed, 112 insertions(+), 75 deletions(-)
 create mode 100644 shallow.h

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2.26.0.113.ge9739cdccc