From: Stefan Beller <sbeller@google.com>
Date: Thu, 01 Dec 2016 00:14:41 GMT
Subject: Re: What's cooking in git.git (Nov 2016, #06; Mon, 28)
Message-ID: <CAGZ79kaaJgsa8SsvWiGkmKQU7Wv_PD6O50ybm=rxPySk=z9N7Q@mail.gmail.com>
In-Reply-To: <20161201000824.GE192901@google.com>

> Oh interesting, I wonder if there is a way to not have to perform a
> chdir since taking a lock to lstat wouldn't be ideal.

I think we could rewrite is_submodule_populated to be

int is_submodule_populated_cheap_with_no_chdir(char *path)
{
    return stat(path + ".git")
}

i.e. just take the presence of the .git file/dir as a hint to run
the child process?