Michael Haggerty <mhag...@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

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