[PATCH/RFC v3 0/9] git checkout: more cleanups, optimisation, less lstat() calls

[Kjetil Barvik <barvik@broadpark.no>]

Changes since v2

--- patch */9 ---
- Changed the order of some patches.
- Some updates to the commit log messages.

--- patch 2/9 ---
- New patch which let us later use longest_match_lstat_cache(), now
  renamed to longest_path_match(), inside patch 4/9.

--- patch 3/9 ---
- New patch which update the symlinks.c file to be more in line with
  the GIT source code (s/length,string/string,length/ for function
  arguments).

-- patch 4/9 ---
- The new function schedule_dir_for_removal() is placed inside
  symlinks.c instead of unpack-trees.c

-- patch 9/9 ---
- NOTE/NB: this patch is only a debug patch, not be included in the final
  GIT release version.



Kjetil Barvik (9):
  lstat_cache(): small cleanup and optimisation
  lstat_cache(): generalise longest_match_lstat_cache()
  lstat_cache(): swap func(length, string) into func(string, length)
  unlink_entry(): introduce schedule_dir_for_removal()
  create_directories(): remove some memcpy() and strchr() calls
  write_entry(): cleanup of some duplicated code
  write_entry(): use fstat() instead of lstat() when file is open
  show_patch_diff(): remove a call to fstat()
  lstat_cache(): print a warning if doing ping-pong between cache types

 Documentation/CodingGuidelines |    3 +
 builtin-add.c                  |    2 +-
 builtin-apply.c                |    2 +-
 builtin-update-index.c         |    2 +-
 cache.h                        |   10 ++-
 combine-diff.c                 |    4 +-
 diff-lib.c                     |    2 +-
 dir.c                          |    2 +-
 entry.c                        |  108 ++++++++++++-------------
 symlinks.c                     |  177 ++++++++++++++++++++++++++++++----------
 unpack-trees.c                 |   34 ++------
 11 files changed, 208 insertions(+), 138 deletions(-)