[PATCH v6 0/7] Improving performance of git clean

Here is v6 of of this series. v5 can be found at:

http://thread.gmane.org/gmane.comp.version-control.git/267823

Sorry for the slow progress on this, I've been busy with other things.

Changes in v6:
* added gentle version of is_git_directory and used it in
  read_gitfile_gently
* use 1MB as size limit for read_gitfile_gently instead of
  PATH_MAX*4
* fixed file descriptor leak in read_gitfile_gently
* avoid cleaning if we can't open, read or validate the path in a git
  file (we used to die on these cases).
* added one more testcase to cover the behavior mention above.
* switched to default repo in performance test

Erik Elfström (7):
  setup: add gentle version of is_git_directory
  setup: add gentle version of read_gitfile
  setup: sanity check file size in read_gitfile_gently
  t7300: add tests to document behavior of clean and nested git
  p7300: add performance tests for clean
  clean: improve performance when removing lots of directories
  RFC: Change error handling scheme in read_gitfile_gently

 builtin/clean.c       |  32 ++++++++--
 cache.h               |  16 +++++
 setup.c               | 158 +++++++++++++++++++++++++++++++++++++++++++-------
 t/perf/p7300-clean.sh |  31 ++++++++++
 t/t7300-clean.sh      | 144 +++++++++++++++++++++++++++++++++++++++++++++
 5 files changed, 355 insertions(+), 26 deletions(-)
 create mode 100755 t/perf/p7300-clean.sh