From: Junio C Hamano <gitster@pobox.com>
Date: Thu, 20 Jun 2013 18:36:36 GMT
Subject: Re: [PATCH v2 04/12] refs: implement simple transactions for the packed-refs file
Message-ID: <7vip18vdcb.fsf@alter.siamese.dyndns.org>
In-Reply-To: <51C342B7.5050002@alum.mit.edu>

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

> On 06/20/2013 07:11 PM, Junio C Hamano wrote:
>
>> Perhaps I am missing something from the previous discussions, but I
>> am having trouble understanding the "main packed ref cache" part of
>> the above.  "main" as opposed to...?
>
> "main" as opposed to "submodule".

I see.

> No, the scenario would be that a git process wants to change a reference
> in a submodule directly, as opposed to starting another git process
> within the submodule, as I believe is done now.  Maybe it's too
> far-fetched even to consider...

Perhaps.  But the "singleton lock because we only handle main packed
ref cache" does not prevent us from doing so later, so I think v3 is
OK.

Thanks.