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From: Jeff King <peff@peff.net>
To: Junio C Hamano <gitster@pobox.com>
Cc: git@vger.kernel.org, Patrick Steinhardt <ps@pks.im>
Subject: Re: [PATCH 1/9] csum-file: drop discard_hashfile()
Date: Thu, 2 Jul 2026 17:06:01 -0400	[thread overview]
Message-ID: <20260702210601.GA2051171@coredump.intra.peff.net> (raw)
In-Reply-To: <xmqqik6xl0fb.fsf@gitster.g>

On Thu, Jul 02, 2026 at 11:19:04AM -0700, Junio C Hamano wrote:

> Jeff King <peff@peff.net> writes:
> 
> > So now we have two functions, discard_hashfile() and free_hashfile(),
> > and we only need one. Which one do we want to keep?
> >
> > The only difference between them is that the discard variant also closes
> > the descriptors held in the struct. Let's look at the three callers:
> > ...
> > Note that I said "descriptors" plural above. Those callers all care
> > about the "fd" member of the struct. But discard_hashfile() also closes
> > check_fd. That is only used if the struct is initialized with
> > hashfd_check(), and neither of its two callers call either discard or
> > free (they always "finalize" instead). So closing it is irrelevant for
> > the current callers.
> >
> > I think we're better off sticking with the simpler free_hashfile()
> > interface, and the handful of callers can decide how to handle the
> > descriptors themselves.
> 
> Sonds good.
> 
> Our resident naming czar (already Cc'ed) may have preference about
> the names and word order, though ;-)

Heh, yes, it should be hashfile_free() but that would require changing
the whole interface. We could do that on top, which might also be a good
time to do s/free/discard/ without worrying about a subtle behavior
change.

-Peff

  reply	other threads:[~2026-07-02 21:06 UTC|newest]

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-07-02  7:52 [PATCH 0/9] hash algorithm leak fixes Jeff King
2026-07-02  7:57 ` [PATCH 1/9] csum-file: drop discard_hashfile() Jeff King
2026-07-02 18:19   ` Junio C Hamano
2026-07-02 21:06     ` Jeff King [this message]
2026-07-03 11:27       ` Patrick Steinhardt
2026-07-02  7:59 ` [PATCH 2/9] hash: add discard primitive Jeff King
2026-07-03 11:27   ` Patrick Steinhardt
2026-07-02  8:01 ` [PATCH 3/9] csum-file: always finalize or discard hash Jeff King
2026-07-02  8:03 ` [PATCH 4/9] csum-file: provide a function to release checkpoints Jeff King
2026-07-03 11:27   ` Patrick Steinhardt
2026-07-02  8:04 ` [PATCH 5/9] patch-id: discard hash when done Jeff King
2026-07-02  8:05 ` [PATCH 6/9] check_stream_oid(): discard hash on read error Jeff King
2026-07-02  8:07 ` [PATCH 7/9] http: discard hash in dumb-http http_object_request Jeff King
2026-07-03 11:27   ` Patrick Steinhardt
2026-07-03 13:47     ` brian m. carlson
2026-07-06  0:01     ` Jeff King
2026-07-06  0:44       ` Jeff King
2026-07-06  6:16       ` Patrick Steinhardt
2026-07-02  8:09 ` [PATCH 8/9] hash: fix memory leak copying sha256 gcrypt handles Jeff King
2026-07-02  8:13 ` [PATCH 9/9] hash: add platform-specific discard functions Jeff King

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