RE: git commit results in many lstat()s

"Junio C Hamano <mailto:jch2355@gmail.com> writes:

"Gumbel, Matthew K" [off-list ref] writes:

quoted

Yes, I think that when the user passes --only flag to git-commit, then git does not
need to call refresh_cache() in prepare_index() in builtin/commit.c.

I may experiment with that. Do you see any downside or negative side-effects?

There may be other fallouts, but one that immediately comes to mind
is that it may break pre-commit hook.

If pre-commit hook exists, we can fall-back to original behavior and call
refresh_cache(). Many repos will not have pre-commit hook and can 
benefit from the speedup.

I'm testing such a change locally. Git test suite seems to be running for quite
a while. Do you know any way to run it in parallel or otherwise speed it
up?

Thanks,
Matt