From: Jeff King <peff@peff.net>
To: Michael Haggerty <mhagger@alum.mit.edu>
Cc: Junio C Hamano <gitster@pobox.com>,
Johan Herland <johan@herland.net>,
git@vger.kernel.org
Subject: Re: [PATCH 04/12] refs: implement simple transactions for the packed-refs file
Date: Wed, 12 Jun 2013 08:01:56 -0400 [thread overview]
Message-ID: <20130612120156.GB20461@sigill.intra.peff.net> (raw)
In-Reply-To: <1370987312-6761-5-git-send-email-mhagger@alum.mit.edu>
On Tue, Jun 11, 2013 at 11:48:24PM +0200, Michael Haggerty wrote:
> The API docs are not clear about whether it is kosher to read
> lock_file::fd directly. It is only done in one file outside of
> lockfile.c. So this patch stores the fd of the lockfile separately in
> struct packed_ref_cache, even though the same struct also has a
> pointer to the struct lock_file.
>
> So please let me know if it is OK to read lock_file::fd directly. If
> so, then I will drop the fd member of struct packed_ref_cache, as well
> as the local variable "fd" in lock_packed_refs().
I think it's fine; the fact that you have such an fd is a public part of
the interface, so you are only relying on the struct member being there.
And since the lock_file must hold the fd itself somewhere, I don't think
that's unreasonable.
I'm not sure how you got your "in one file" list, but it appears to
happen in credential-store.c, bundle.c, fast-import.c, and read-cache.c.
-Peff
next prev parent reply other threads:[~2013-06-12 12:02 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-06-11 21:48 [PATCH 00/12] Fix some reference-related races Michael Haggerty
2013-06-11 21:48 ` [PATCH 01/12] repack_without_ref(): split list curation and entry writing Michael Haggerty
2013-06-12 11:38 ` Jeff King
2013-06-12 11:56 ` Michael Haggerty
2013-06-11 21:48 ` [PATCH 02/12] pack_refs(): split creation of packed refs " Michael Haggerty
2013-06-11 21:48 ` [PATCH 03/12] refs: wrap the packed refs cache in a level of indirection Michael Haggerty
2013-06-11 21:48 ` [PATCH 04/12] refs: implement simple transactions for the packed-refs file Michael Haggerty
2013-06-12 12:01 ` Jeff King [this message]
2013-06-11 21:48 ` [PATCH 05/12] refs: manage lifetime of packed refs cache via reference counting Michael Haggerty
2013-06-11 21:48 ` [PATCH 06/12] do_for_each_entry(): increment the packed refs cache refcount Michael Haggerty
2013-06-11 21:48 ` [PATCH 07/12] packed_ref_cache: increment refcount when locked Michael Haggerty
2013-06-11 21:48 ` [PATCH 08/12] Extract a struct stat_data from cache_entry Michael Haggerty
2013-06-11 21:48 ` [PATCH 09/12] add a stat_validity struct Michael Haggerty
2013-06-11 21:48 ` [PATCH 10/12] get_packed_ref_cache: reload packed-refs file when it changes Michael Haggerty
2013-06-11 21:48 ` [PATCH 11/12] for_each_ref: load all loose refs before packed refs Michael Haggerty
2013-06-11 21:48 ` [PATCH 12/12] refs: do not invalidate the packed-refs cache unnecessarily Michael Haggerty
2013-06-12 12:39 ` Jeff King
2013-06-12 12:52 ` [PATCH 00/12] Fix some reference-related races Jeff King
2013-06-15 20:13 ` Ramsay Jones
2013-06-16 5:50 ` Michael Haggerty
2013-06-18 18:13 ` Ramsay Jones
2013-06-19 5:51 ` Michael Haggerty
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