Re: [PATCH v2 17/17] rename_tmp_log(): on SCLD_VANISHED, retry

[Junio C Hamano <gitster@pobox.com>]

Michael Haggerty <mhagger@alum.mit.edu> writes:

> If safe_create_leading_directories() fails because a file along the
> path unexpectedly vanished, try again from the beginning.  Try at most
> 3 times.

As the previous step bumped it from 3 to 4 without explanation, the
above no longer reflects reality ;-)

The series mostly looked sane from a cursory read.

Will re-queue.  Thanks.


>
> Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
> ---
>  refs.c | 9 ++++++++-
>  1 file changed, 8 insertions(+), 1 deletion(-)
>
> diff --git a/refs.c b/refs.c
> index 490525a..810f802 100644
> --- a/refs.c
> +++ b/refs.c
> @@ -2533,7 +2533,14 @@ static int rename_tmp_log(const char *newrefname)
>  	int attempts = 4;
>  
>   retry:
> -	if (safe_create_leading_directories(git_path("logs/%s", newrefname))) {
> +	switch (safe_create_leading_directories(git_path("logs/%s", newrefname))) {
> +	case SCLD_OK:
> +		break; /* success */
> +	case SCLD_VANISHED:
> +		if (--attempts > 0)
> +			goto retry;
> +		/* fall through */
> +	default:
>  		error("unable to create directory for %s", newrefname);
>  		return -1;
>  	}