Re: [PATCH v7 2/2] Verify index file before we opportunistically update it

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Junio C Hamano <gitster@xxxxxxxxx> writes:

> Yeah, I was hoping that the real write codepath (as opposed to "this
> is read only and we read the index without holding a lock---now we
> noticed that the index needs refreshing, and we know how the
> resulting refreshed index should look like, perhaps we can write it
> to save cycles for other processes" codepath where we cannot and
> should not take a lock early) would take the lock and then read, but
> because that is not the way they work, the need the same protection,
> I would think.

Having said that, nobody sane would be running two simultaneous
operations that are clearly write-oriented competing with each other
against the same index file.  So in that sense that can be done as a
less urgent follow-up for this topic.
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