From: Junio C Hamano <gitster@pobox.com>
Date: Thu, 04 Oct 2012 18:24:43 GMT
Subject: Re: [PATCH 1/4] peel_ref: use faster deref_tag_noverify
Message-ID: <7vk3v6yu1g.fsf@alter.siamese.dyndns.org>
In-Reply-To: <20121004075815.GA31325@sigill.intra.peff.net>

Jeff King <peff@peff.net> writes:

> When we are asked to peel a ref to a sha1, we internally call
> deref_tag, which will recursively parse each tagged object
> until we reach a non-tag. This has the benefit that we will
> verify our ability to load and parse the pointed-to object.
>
> However, there is a performance downside: we may not need to
> load that object at all (e.g., if we are listing peeled
> simply listing peeled refs),...

Both correct.

I checked the existing callsites and nobody seems to assume that it
can use the pointed-to object without checking because peel_ref has
already checked, so it makes sense.