[PATCH 00/11] Use ref transactions from most callers

This patch series changes most of the places where the ref functions for locking and writing refs to instead use the new ref transaction API. There are still three more places where write_ref_sha1() is called from outside of refs.c but those all will require more complex work and review so those changes belong in a different patch series.

Ronnie Sahlberg (11):
  refs.c: constify the sha arguments for
    ref_transaction_create|delete|update
  refs.c: change ref_transaction_update() to do error checking and
    return status
  refs.c: change ref_transaction_create to do error checking and return
    status
  refs.c: ref_transaction_delete to check for error and return status
  tag.c: use ref transactions when doing updates
  replace.c: use the ref transaction functions for updates
  commit.c: use ref transactions for updates
  sequencer.c: use ref transactions for all ref updates
  fast-import.c: change update_branch to use ref transactions
  branch.c: use ref transaction for all ref updates
  walker.c: use ref transaction for ref updates

 branch.c             | 16 ++++++++++------
 builtin/commit.c     | 22 ++++++++++++----------
 builtin/replace.c    | 15 +++++++++------
 builtin/tag.c        | 15 +++++++++------
 builtin/update-ref.c | 20 +++++++++++++-------
 fast-import.c        | 23 +++++++++++++++--------
 refs.c               | 44 ++++++++++++++++++++++++++++++--------------
 refs.h               | 25 +++++++++++++------------
 sequencer.c          | 17 +++++++++++++----
 walker.c             | 45 ++++++++++++++++++++-------------------------
 10 files changed, 144 insertions(+), 98 deletions(-)